Power supply system and power supply control method

Abstract

This application discloses a power supply system and a power supply control method. The system includes: a low-voltage power supply system, in which a low-voltage battery supplies power to N first electrical devices, and the output terminals of N first power distribution switches are respectively connected to the N first electrical devices; a DC-DC power supply system, in which a DC-DC converter converts the high-voltage electrical signal from the power battery into a low-voltage electrical signal, one end of the DC-DC converter being connected to the power battery, and the other end being connected to the input terminals of M second power distribution switches, the output terminals of the M second power distribution switches being respectively connected to the M second electrical devices; and a disconnecting switch, one end of which is connected to the low-voltage power supply system and the other end of which is connected to the DC-DC power supply system, used to control the connection state between the low-voltage power supply system and the DC-DC power supply system. This ensures that the vehicle can still operate normally even if any power supply system fails.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, specifically to a power supply system and a power supply control method. Background Technology

[0002] With the rapid development of electric vehicles, engines are gradually being replaced by power batteries. However, power batteries generally have a high voltage, reaching over 400V. Therefore, electric vehicles can currently use a DC-DC converter to convert high voltage to low voltage and connect the DC-DC converter directly in parallel with the low-voltage battery to form a dual redundant power supply system, which provides energy to the entire vehicle.

[0003] When the aforementioned dual-redundant power supply system is supplying power to the vehicle, if the low-voltage battery fails, the dual-redundant power supply system will also fail, causing the vehicle to lose control, that is, the vehicle will lose its ability to continue driving. Summary of the Invention

[0004] The purpose of this application is to provide a power supply system and a power supply control method so that the vehicle can still run normally in the event of failure of any power supply module in a dual redundant power supply system.

[0005] The technical solution of this application is as follows:

[0006] In a first aspect, a power supply system is provided, the system comprising:

[0007] A low-voltage power supply system includes a low-voltage battery, N first power distribution switches, and N first electrical devices. The low-voltage battery is used to supply power to the N first electrical devices. The output terminals of the N first power distribution switches are respectively connected to the N first electrical devices. The N first power distribution switches correspond one-to-one with the N first electrical devices, and N is a positive integer.

[0008] A DC-DC power supply system includes a power battery, a DC-DC converter, M second power distribution switches, and M second electrical devices. The DC-DC converter converts the high-voltage electrical signal from the power battery into a low-voltage electrical signal to supply power to the M second electrical devices based on the low-voltage electrical signal. One end of the DC-DC converter is connected to the power battery, and the other end is connected to the input terminals of the M second power distribution switches. The output terminals of the M second power distribution switches are connected to the M second electrical devices. The M second power distribution switches correspond one-to-one with the M second electrical devices, and M is a positive integer. The functions of the first electrical devices and the second electrical devices are the same.

[0009] A disconnecting switch, one end of which is connected to the low-voltage power supply system and the other end of which is connected to the DC-DC power supply system, is used to control the connection status between the low-voltage power supply system and the DC-DC power supply system.

[0010] In a second aspect, a power supply control method is provided, which is applied to the power supply system described in the first aspect, and the power supply control method includes:

[0011] Detect whether the target module in the first power supply system has malfunctioned;

[0012] If the target module is found to be faulty, the target switch in the power supply system is controlled to be in the open state, and the power distribution switch of the second power supply system is controlled to be in the closed state, so that the electrical equipment of the second power supply system can work normally.

[0013] Wherein, the first power supply system is either the low-voltage power supply system or the DC-DC power supply system, the second power supply system is another subsystem of the low-voltage power supply system and the DC-DC power supply system other than the first power supply system, and the target switch is a switch used to control the disconnection of the switch connected to the target module.

[0014] Thirdly, embodiments of this application provide an electronic device, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of any of the power supply control methods described in the embodiments of this application.

[0015] Fourthly, embodiments of this application provide a readable storage medium storing a program or instructions, which, when executed by a processor, implement the steps of any of the power supply control methods described in embodiments of this application.

[0016] Fifthly, embodiments of this application provide a computer program product, wherein the instructions in the computer program product, when executed by a processor of an electronic device, enable the electronic device to perform the steps of any of the power supply control methods described in embodiments of this application.

[0017] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0018] The power supply system provided in this application embodiment includes a low-voltage power supply system, a DC-DC power supply system, and a disconnecting switch. By adding a disconnecting switch between the low-voltage power supply system and the DC-DC power supply system, the connection status between the two systems can be controlled. Since the electrical equipment in the low-voltage power supply system and the DC-DC power supply system has the same function, if any subsystem in either system fails, the connection between it and the other subsystem can be disconnected based on the disconnecting switch, ensuring that the power supply to the electrical equipment in the other subsystem is not affected. This ensures the normal operation of the electrical equipment in the faulty subsystem, thereby ensuring the normal operation of the vehicle.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application, and do not constitute an undue limitation of this application.

[0021] Figure 1 This is one of the structural schematic diagrams of a power supply system provided in the first aspect embodiment of this application;

[0022] Figure 2 This is a second schematic diagram of a power supply system provided in the first aspect of this application;

[0023] Figure 3 This is a schematic flowchart of a power supply control method provided in the second aspect of this application;

[0024] Figure 4 This is one of the power distribution diagrams of the power supply system when the first target electrical equipment fails, according to the second aspect of the embodiments of this application;

[0025] Figure 5 This is a second power distribution diagram of the power supply system when the first target electrical equipment fails, according to the second aspect of the embodiment of this application;

[0026] Figure 6 This is one of the power distribution diagrams of the power supply system when the power supply module in the first power supply system according to the second aspect of the embodiment of this application fails;

[0027] Figure 7 This is a second power distribution diagram of the power supply system when the power supply module in the first power supply system of the second aspect of the embodiment of this application fails;

[0028] Figure 8This is a power distribution diagram of the power supply system when the vehicle is in a dormant state, according to the second aspect of the embodiment of this application;

[0029] Figure 9 This is a power distribution diagram of the power supply system of a vehicle after it is awakened, according to the second aspect of the embodiment of this application;

[0030] Figure 10 This is a schematic diagram of the structure of a power supply control device provided in the third aspect embodiment of this application;

[0031] Figure 11 This is a schematic diagram of the structure of an electronic device provided in the fourth aspect of this application. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0033] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples consistent with some aspects of this application as detailed in the appended claims.

[0034] As described in the background section, in the prior art, when a dual-redundant power supply system supplies power to a vehicle, if the low-voltage battery fails, both dual-redundant power supply systems will fail, leading to loss of vehicle control. To solve the above problem, this application provides a power supply system and a power supply control method. The power supply system includes a low-voltage power supply system, a DC-DC power supply system, and an isolating switch. By adding an isolating switch between the low-voltage power supply system and the DC-DC power supply system, the connection status between the two systems can be controlled. Since the electrical equipment in the low-voltage power supply system and the DC-DC power supply system has the same function, if any subsystem in either system fails, the connection between it and the other subsystem can be disconnected based on the isolating switch, ensuring that the power supply to the electrical equipment in the other subsystem is not affected. This ensures the normal operation of the electrical equipment in the faulty subsystem, thereby ensuring the normal operation of the vehicle.

[0035] The power supply system provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0036] Figure 1 This is a schematic diagram of a power supply system provided in an embodiment of this application, as shown below. Figure 1 As shown, the power supply system provided in this application embodiment may include a DC-DC power supply system 110, a disconnecting switch 120, and a low-voltage power supply system 130.

[0037] The low-voltage power supply system 130 includes a low-voltage battery, N first power distribution switches and N first electrical devices. The low-voltage battery is used to supply power to the N first electrical devices. The output terminals of the N first power distribution switches are respectively connected to the N first electrical devices. The N first power distribution switches correspond one-to-one with the N first electrical devices, and N is a positive integer.

[0038] The DC-DC power supply system 110 includes a power battery, a DC-DC converter, M second power distribution switches, and M second electrical devices. The DC-DC converter converts the high-voltage electrical signal from the power battery into a low-voltage electrical signal to supply power to the M second electrical devices based on the low-voltage electrical signal. One end of the DC-DC converter is connected to the power battery, and the other end is connected to the input terminals of the M second power distribution switches. The output terminals of the M second power distribution switches are connected to the M second electrical devices. The M second power distribution switches correspond one-to-one with the M second electrical devices, where M is a positive integer. The functions of the first electrical devices and the second electrical devices are the same.

[0039] The disconnecting switch 130 has one end connected to the low-voltage power supply system and the other end connected to the DC-DC power supply system, and is used to control the connection status between the low-voltage power supply system and the DC-DC power supply system.

[0040] The first power distribution switch can be a switch used to control each first electrical device in a low-voltage power supply system. The first electrical device can be an electrical device installed in the low-voltage power supply system.

[0041] The second power distribution switch can be used in a DC-DC power supply system to control the switching of various secondary electrical devices. The secondary electrical devices can be those installed in a low-voltage power supply system.

[0042] The functions of the first and second electrical devices are the same; both are electrical devices inherent to the vehicle itself. The first and second electrical devices can be understood as deploying one set of each electrical device in the vehicle within the low-voltage power supply system and the DC-DC power supply system, respectively.

[0043] It should be noted that low-voltage power supply systems can also include other safety-independent loads, specifically devices that need to maintain power supply in sleep mode, such as in-vehicle smart terminals. DC-DC power supply systems can also include some high-current safety-independent loads.

[0044] In one example, reference Figure 2 , Figure 2 For the power supply system, in Figure 2 The low-voltage power supply system 21 includes a low-voltage battery 211 and N first power distribution switches 212 (e.g., ...). Figure 2 Distribution switches 6, 7, 8, 9, and 10) and N primary electrical devices 213 (e.g., Figure 2 (Including safety-related sensors 2, safety-related processors 2, steering system 2, braking system 2, and safety-independent controllers).

[0045] exist Figure 2 The DC-DC power supply system 22 includes a power battery 221 and a DC-DC converter (i.e., Figure 2 The step-down module (DCDC) 222 and M second distribution switches 223 (such as Figure 2 The distribution switches 1, 2, 3, 4, and 5) and M secondary electrical devices 224 (e.g., Figure 2 The system includes safety-related sensors 1, safety-related processors 1, steering system 1, braking system 1, and safety-independent controllers. One end of the DC-DC converter 222 is connected to the power battery 221, and the other end is connected to the input terminals of M second power distribution switches 223. Figure 2 As can be seen, the electrical equipment in the low-voltage power supply system 21 and the electrical equipment in the DC-DC power supply system 22 are electrical equipment with the same function. It can be understood that one set is deployed in the low-voltage power supply system 21 and the DC-DC power supply system 22 respectively.

[0046] Continue to refer to Figure 2 There is a one-to-one correspondence between the N first power distribution switches 212 and the N first electrical devices 213. For example, power distribution switch 6 corresponds to safety-related sensor 2 and is used to control the connection and disconnection of power supply in the branch corresponding to safety-related sensor 2; power distribution switch 7 corresponds to safety-related processor 2 and is used to control the connection and disconnection of power supply in the branch corresponding to safety-related processor 2; power distribution switch 8 corresponds to steering system 2 and is used to control the connection and disconnection of power supply in the branch corresponding to steering system 2; power distribution switch 9 corresponds to braking system 2 and is used to control the connection and disconnection of power supply in the branch corresponding to braking system 2; and power distribution switch 10 corresponds to safety-independent controller and is used to control the connection and disconnection of power supply in the branch corresponding to safety-independent controller. Similarly, there is also a one-to-one correspondence between the N second power distribution switches 223 and the N second electrical devices 224, which will not be elaborated further here.

[0047] In some embodiments of this application, the low-voltage power supply system may further include a low-voltage battery management system, which manages the power of the low-voltage battery 211, specifically controlling the energy release of the low-voltage battery 211. One end of the low-voltage battery management system is connected to the low-voltage battery 211, and the other end is connected to the input terminals of the disconnect switch 120 and N first power distribution switches 212, respectively.

[0048] In one example, continue to refer to Figure 2 The low-voltage power supply system may also include a low-voltage battery management system (BMS) 214, one end of which is connected to a low-voltage battery 211, and the other end is connected to the input terminals of the isolating switch 120 and N first power distribution switches 212 respectively.

[0049] In some embodiments of this application, a first switch 225 may also be connected between the DC-DC converter 222 and the isolating switch 120 and the M second power distribution switches 223, and a second switch 215 may be connected between the low-voltage battery management system 214 and the isolating switch 120 and the N first power distribution switches 212, such as... Figure 2As shown, a first switch 225 is connected between the DC-DC converter 222 and the isolating switch 130 and M second power distribution switches 223, and a second switch 215 is connected between the low-voltage battery management system 214 and the isolating switch 130 and N first power distribution switches 212.

[0050] When the first switch 225 is open, the connection between the DC-DC converter 222 and the isolating switch 120 is disconnected, as well as the connection between the DC-DC converter 222 and the M second power distribution switches 223 is disconnected. When the second switch 215 is open, the connection between the low-voltage battery management system 214 and the isolating switch 120 is disconnected, as well as the connection between the low-voltage battery management system 214 and the N first power distribution switches 212 is disconnected.

[0051] In some embodiments of this application, in order to better utilize the power supply system provided in the above embodiments to control the power supply of the vehicle, this application also provides a power supply control method. Figure 3 This is a flowchart illustrating a power supply control method provided in an embodiment of this application. The executing entity of this power supply control method can be the power supply system provided in the above embodiment. Figure 3 As shown, the power supply control method provided in this application embodiment may include steps 310-320.

[0052] Step 310: Check whether the target module in the first power supply system has malfunctioned.

[0053] The first power supply system can be either a low-voltage power supply system or a DC-DC power supply system. The target module here can be either the electrical equipment in the first power supply system or the power supply module in the first power supply system.

[0054] In one example, if the first power supply system is a low-voltage power supply system, the target module can be at least one of the first electrical devices, or it can be a low-voltage battery. If the first power supply system is a DC-DC power supply system, the target module can be at least one of the second electrical devices, or it can be a DC-DC converter.

[0055] Step 320: If the target module is found to be faulty, control the target switch in the power supply system to be in the open state and control the distribution switch of the second power supply system in the power supply system to be in the closed state, so that the electrical equipment of the second power supply system can work normally.

[0056] The second power supply system is another subsystem in the low-voltage power supply system and the DC-DC power supply system, excluding the first power supply system.

[0057] The target switch can be a switch used to control the disconnection of the switch connected to the target module. For example, if the first power supply system is a low-voltage power supply system and the target module is any one of the first electrical devices, the target switch can be a distribution switch and / or disconnecting switch connected to that electrical device. For instance, in the event of a fault in steering system 2, the target switch is distribution switch 8 and / or disconnecting switch. If the first power supply system is a DC-DC power supply system and the target module is any one of the second electrical devices, the target switch can be a distribution switch and / or disconnecting switch connected to that electrical device. For instance, in the event of a fault in steering system 1, the target switch is distribution switch 3 and / or disconnecting switch.

[0058] When the first power supply system is a low-voltage power supply system and the target module is a low-voltage battery, the target switch can be a first switch and / or an isolating switch. When the first power supply system is a DC-DC power supply system and the target module is a DC-DC converter, the target switch can be a second switch and / or an isolating switch.

[0059] In some embodiments of this application, if a target module in either the low-voltage power supply system or the DC-DC power supply system fails, the target switch in the power supply system can be controlled to be in an open state, and the power distribution switch in another subsystem of the power supply system other than the first power supply system can be controlled to be in a closed state. This allows the electrical equipment in the second power supply system to be powered by the power supply module of that system, ensuring that the electrical equipment in that subsystem can work normally.

[0060] In the embodiments of this application, when it is determined that the target module in the first power supply system has failed, the target switch in the power supply system is controlled to be in the open state, and the power distribution switch of the second power supply system is controlled to be in the closed state. This allows the electrical equipment in the second power supply system to work normally. Thus, when any power supply device in the power supply system consisting of the low-voltage battery and the DC-DC converter fails, the other power supply device can be used to supply power to maintain the normal operation of the vehicle.

[0061] In some embodiments of this application, a failure in the first power supply system can be due to a fault in the power supply module or a fault in a specific device within the system. For example, if the first power supply system is a low-voltage system, a failure in this system could be due to a fault in the low-voltage battery or a fault in a specific device within the system. Similarly, if the first power supply system is a DC-DC power supply system, a failure could be due to a fault in the DC-DC converter or a fault in a specific device within the system. Different handling methods can be used for different situations, as detailed below:

[0062] Scenario 1: The first target electrical equipment of the first power supply system malfunctions.

[0063] The first target electrical device here can be at least one electrical device that has failed among the electrical devices in the first power supply system.

[0064] Correspondingly, step 320 may specifically include:

[0065] If it is determined that the first target electrical equipment has malfunctioned, the state of the first target power distribution switch connected to the first target electrical equipment is controlled to be open, and the state of the power distribution switch corresponding to the same electrical equipment in the second power supply system of the power supply system is controlled to be closed.

[0066] In some embodiments of this application, when it is determined that the first target electrical device in the first power supply system has failed, the state of the first target power distribution switch connected to the first target electrical device can be controlled to be in the open state, and the power distribution switches of other electrical devices in the first power supply system do not need to be disconnected. This ensures the normal operation of other electrical devices in the first power supply system that have not failed. In addition, when the first target electrical device in the first power supply system fails, the state of the power distribution switch corresponding to the same electrical device in the second power supply system as the first target electrical device should be controlled to be in the closed state. This ensures that the first target electrical device operates normally under the power supply of the second power supply system.

[0067] In one example, reference Figure 4 Taking the first power supply system as a DC-DC power supply system and the first target electrical equipment as the steering system 1 as an example, the first target power distribution switch is the power distribution switch 3. When the steering system 1 fails, the power distribution switch 3 should be disconnected, and the state of the power distribution switch 8 connected to the steering system 2 in the low-voltage power supply system of the second power supply system should be controlled to be closed.

[0068] It should be noted that when the first target power distribution switch is controlled to be in the open state, all power distribution switches in the second power supply system of the power supply system can also be controlled to be in the closed state simultaneously. This not only ensures the normal operation of the electrical equipment in the second power supply system that is the same as the first target electrical equipment, but also ensures the normal operation of other electrical equipment in the second power supply system. Specifically, whether to control all power distribution switches in the second power supply system of the power supply system to be in the closed state, or to control the power distribution switches corresponding to the electrical equipment in the second power supply system of the power supply system that is the same as the first target electrical equipment to be in the closed state, can be set according to user needs, and is not limited in this embodiment.

[0069] In the embodiments of this application, when it is determined that the first target electrical device in the first power supply system has failed, the state of the first target power distribution switch connected to the first target electrical device can be controlled to be in the open state. In this way, only the power supply to the first target electrical device is disconnected, while the power supply to other electrical devices in the first power supply system is not disconnected, ensuring the normal operation of other electrical devices that have not failed. In addition, when the first target electrical device in the first power supply system fails, the state of the power distribution switch corresponding to the same electrical device in the second power supply system is controlled to be in the closed state. In this way, the normal operation of the first target electrical device under the power supply of the second power supply system can be ensured.

[0070] In some embodiments of this application, there may be a situation where the first target power distribution switch corresponding to the first target electrical equipment fails. In this case, in order to further ensure the safety of the vehicle, step 320 may further include:

[0071] If it is determined that the first target electrical equipment has malfunctioned and the first target power distribution switch has failed, the state of the control isolating switch is open, and the state of the power distribution switch corresponding to the electrical equipment with the same characteristics as the first target electrical equipment in the second power supply system of the control power supply system is closed.

[0072] In some embodiments of this application, when it is determined that the first target electrical equipment of the first power supply system has failed and the first target power distribution switch has failed, the state of the isolating switch can be directly controlled to be in the open state, that is, all power supply of the first power supply system is directly disconnected, and power is supplied only through the second power supply system, ensuring that the power distribution switch corresponding to the electrical equipment in the second power supply system that is the same as the first target electrical equipment is in the closed state.

[0073] In one example, reference Figure 5Taking the first power supply system as a DC-DC power supply system and the first target electrical equipment as the steering system 1 as an example, the first target power distribution switch is the power distribution switch 3. When the steering system 1 fails, the power distribution switch 3 should be disconnected. However, if the power distribution switch 3 fails, i.e. cannot be disconnected, the isolating switch can be controlled to open, and the state of the power distribution switch 8 connected to the steering system 2 in the low-voltage power supply system of the second power supply system can be controlled to be closed.

[0074] It should be noted that when the isolating switch is in the open state, all distribution switches in the second power supply system of the power supply system can also be controlled to be in the closed state simultaneously. This not only ensures the normal operation of the electrical equipment in the second power supply system that is the same as the first target electrical equipment, but also ensures the normal operation of other electrical equipment in the second power supply system. Specifically, whether to control all distribution switches in the second power supply system of the power supply system to be in the closed state, or to control the distribution switches corresponding to the electrical equipment in the second power supply system of the power supply system that is the same as the first target electrical equipment to be in the closed state, can be set according to user needs, and is not limited in this embodiment.

[0075] In the embodiments of this application, when it is determined that the first target electrical equipment of the first power supply system has failed and the first target power distribution switch has failed, the state of the isolating switch can be controlled to be in the open state, so as to avoid the impact of the failure of the first target electrical equipment on the vehicle. At the same time, the state of the power distribution switch corresponding to the same electrical equipment as the first target electrical equipment in the second power supply system can be controlled to be in the closed state, so as to ensure that the first target electrical equipment works normally under the power supply of the second power supply system.

[0076] It should be noted that, if the first target electrical equipment in the first power supply system fails, and the first target distribution switch does not fail, the disconnect switch can be controlled to be in the open state, and all distribution switches in the second power supply system can be controlled to be in the closed state. In this way, all electrical equipment is powered by the second power supply system. Specifically, whether to control the disconnect switch to be in the open state when the first target distribution switch does not fail can be selected according to user needs and is not limited in this embodiment.

[0077] In some embodiments of this application, when the first target electrical equipment fails, in order to ensure the normal operation of the vehicle, that is, to ensure the normal operation of other electrical equipment, it is generally preferred to disconnect the first target power distribution switch corresponding to the first target electrical equipment. If the first target power distribution switch fails, the disconnecting switch is then disconnected. In order to ensure that the first target power distribution switch at the first power supply system is disconnected before the disconnecting switch, it is necessary to set the power distribution parameters of the first target power distribution switch to be less than the configuration parameters of the disconnecting switch. The configuration parameters here can be, for example, current, voltage, etc.

[0078] In one example, continue to refer to Figure 5 Taking the first power supply system as a DC-DC power supply system and the first target electrical equipment as the steering system 1 as an example, the first target power distribution switch is the power distribution switch 3. If the steering system 1 malfunctions, such as a short-to-ground fault, the current in the corresponding branch of the steering system 1 will be too high. In order to protect the vehicle, it is necessary to disconnect the power supply to the corresponding branch of the steering system 1. In order to ensure the normal operation of other electrical equipment in the DC-DC power supply system, the overcurrent protection current threshold of the power distribution switch 3 should be set to be less than the overcurrent protection current threshold of the disconnecting switch. In this way, the current in the corresponding branch of the steering system 1 will first reach the overcurrent protection current threshold of the power distribution switch 3, and then the power distribution switch 3 will be disconnected first. In the case of the failure of the power distribution switch 3, when the current in the corresponding branch of the steering system 1 reaches the overcurrent protection current threshold of the disconnecting switch, the disconnecting switch will be disconnected.

[0079] It should be noted that, in the case of a confirmed fault in the first target electrical equipment, the first target power distribution switch should be disconnected first. Disconnection of the isolating switch should only be considered if disconnection of the first target power distribution switch fails. Alternatively, the isolating switch can be disconnected directly. The specific disconnection method can be selected according to user needs and is not limited in this embodiment.

[0080] Scenario 2: The power supply module of the first electronic power supply system malfunctions.

[0081] Correspondingly, step 320 may specifically include: if it is determined that the power supply module has failed, controlling the target sub-switch to be in the off state.

[0082] Where the first power supply system is a low-voltage power supply system and the power supply module is a low-voltage battery, the target sub-switch is a second switch and / or an isolating switch. Where the first power supply system is a DC-DC power supply system and the power supply module is a DC-DC converter, the target sub-switch is a first switch and / or an isolating switch.

[0083] In some embodiments of this application, if the power supply module of the first power supply system fails, the target sub-switch can be disconnected first, that is, the connection between the power supply module and the isolating switch can be disconnected, and the connection between the power supply module and each distribution switch of the first power supply system can be disconnected. The power supply of all electrical equipment is provided by the second power supply system.

[0084] In the embodiments of this application, when it is determined that the power supply module of the first power supply system has failed, priority is given to controlling the disconnection between the power supply module and the isolating switch, as well as controlling the disconnection between the power supply module and each power distribution switch of the first power supply system. In this way, the power supply of all electrical equipment is provided by the second power supply system, so that the vehicle can still run normally even if the first power supply system fails.

[0085] In some embodiments of this application, when the first power supply system is a DC-DC power supply system and the power supply module is a DC-DC converter, the state of the control target sub-switch is the open state, which may specifically include:

[0086] The DC-DC converter controls the target sub-switch to be in the open state. That is, the DC-DC converter itself disconnects the connection between itself and the isolating switch, and also disconnects the connection between itself and each power distribution switch of the first power supply system.

[0087] In one example, reference Figure 6 In the case where the first power supply system is a DC-DC power supply system and the power supply module is a DC-DC converter, if the DC-DC converter fails, the DC-DC converter should first disconnect from the disconnecting switch and disconnect from the power distribution switches of the first power supply system. After the disconnection is successful, the disconnecting switch will automatically close. All electrical equipment in the system, i.e., electrical equipment on the DC-DC power supply system side and electrical equipment on the low-voltage power supply system side, will be powered by low-voltage batteries.

[0088] In some embodiments of this application, when the first power supply system is a low-voltage power supply system and the power supply module is a low-voltage battery, the state of the control target sub-switch is the open state, which may specifically include:

[0089] The low-voltage battery management system controls the target sub-switch to be in the open state. This means the low-voltage battery management system disconnects the connection between the power supply module and the isolating switch, as well as the connection between the power supply module and each distribution switch of the first power supply system. Specifically, if a low-voltage battery fails, the low-voltage battery management system first disconnects the connection between the low-voltage battery and the isolating switch, as well as the connection between the low-voltage battery and each distribution switch of the low-voltage power supply system. After successful disconnection, the isolating switch automatically closes, and all electrical equipment in the system—both those on the DC-DC power supply system side and those on the low-voltage power supply system side—is powered by the DC-DC converter.

[0090] In some embodiments of this application, if disconnecting the power supply module from the isolating switch and disconnecting the power supply module from each distribution switch of the first power supply system fails, the method described above further includes:

[0091] The control isolating switch is disconnected.

[0092] In some embodiments of this application, disconnecting the isolating switch is considered only if the first switch or the second switch fails to disconnect.

[0093] In one example, reference Figure 7 If the first power supply system is a DC-DC power supply system and the power supply module is a DC-DC converter, and the DC-DC converter fails, or if the DC-DC converter fails to disconnect the connection between the DC-DC converter and the isolating switch, or if the DC-DC converter fails to disconnect the connection between the DC-DC converter and each power distribution switch of the first power supply system, then the isolating switch will be disconnected, and only the electrical equipment on the low-voltage power supply system side will work normally.

[0094] Similarly, if the first power supply system is a low-voltage power supply system and the power supply module is a low-voltage battery, and the low-voltage battery management system fails to disconnect the connection between the power supply module and the isolating switch, as well as the connection between the power supply module and each distribution switch of the first power supply system, then the isolating switch will be disconnected, and only the electrical equipment on the DC-DC power supply system side will work normally.

[0095] It should be noted that, in the case of a confirmed power supply module failure, the target sub-switch should be disconnected first. If disconnecting the target sub-switch fails, then disconnecting the isolating switch should be considered. Alternatively, the isolating switch can be disconnected directly. The specific disconnection method can be selected according to user needs and is not limited in this embodiment.

[0096] In some embodiments of this application, if it is determined that the target module in the first power supply system has not malfunctioned, the method described above may further include:

[0097] When the vehicle is determined to be in a dormant state, the state of the control disconnect switch is open, and the state of the M second power distribution switches in the DC-DC power supply system is also open.

[0098] In some embodiments of this application, since the electrical equipment on the low-voltage power supply system side is equipment that still needs to maintain power supply in the dormant state, when the vehicle is in the dormant state, the state of the isolating switch can be controlled to be in the open state, and the state of the M second power distribution switches in the DC-DC power supply system can be controlled to be in the open state. That is, only the electrical equipment on the low-voltage battery subsystem side needs to work normally, and there is no need to supply power to the electrical equipment on the DC-DC power supply system side.

[0099] In one example, reference Figure 8 When the vehicle is in a dormant state, the disconnect switch is turned off. In the DC-DC power supply system, the power distribution switches 1-5 are all in the open state, and the power distribution switches 6-10 in the low-voltage power supply system are all in the closed state.

[0100] In the embodiments of this application, when it is determined that the vehicle is in a dormant state, the state of the isolating switch can be controlled to be in the open state, and the state of the M second power distribution switches in the DC-DC power supply system can be controlled to be in the open state. In this way, when the vehicle is in a dormant state, only the electrical equipment on the low-voltage battery subsystem side can work normally, and there is no need to supply power to the electrical equipment on the DC-DC power supply system side, thus saving power.

[0101] In some embodiments of this application, after the state of the control disconnect switch is in the open state and the state of the M second distribution switches in the DC-DC power supply system is in the open state, the method described above may further include:

[0102] When it is determined that the vehicle has been awakened, the state of the control isolating switch is closed, and the state of the M second power distribution switches in the DC-DC power supply system is also closed.

[0103] In some embodiments of this application, after the vehicle is awakened and it is indicated that the vehicle needs to be driven, the isolating switch can be controlled to be in a closed state, and the states of the M second power distribution switches in the DC-DC power supply system can also be controlled to be in a closed state. That is, the DC-DC power supply system also supplies power to the vehicle's electrical equipment. At this time, the low-voltage battery can be charged and discharged externally, such as... Figure 9 As shown.

[0104] It should be noted that the power supply control method provided in this application embodiment can be executed by a power supply control device or a control module in the power supply control device for executing the power supply control method.

[0105] Based on the same inventive concept as the power supply control method described above, this application also provides a power supply control device. The following is in conjunction with... Figure 10 The power supply control device provided in the embodiments of this application will be described in detail.

[0106] Figure 10 This is a schematic diagram illustrating the structure of a power supply control device according to an exemplary embodiment. This power supply control device can be specifically applied to the power supply system described in the above embodiments, such as... Figure 10 As shown, the power supply control device 1000 may include:

[0107] Detection module 1010 detects whether the target module in the first power supply system has malfunctioned;

[0108] The control module 1020 is used to control the state of the target switch in the power supply system to be open and the state of the distribution switch of the second power supply system to be closed when it is determined that the target module has failed, so as to enable the electrical equipment of the second power supply system to work normally; wherein, the first power supply system is either the low-voltage power supply system or the DC-DC power supply system, the second power supply system is another subsystem of the low-voltage power supply system and the DC-DC power supply system other than the first power supply system, and the target switch is a switch used to control the switch connected to the target module to be disconnected.

[0109] In the embodiments of this application, when it is determined that the first power supply system has failed, the target switch in the power supply system is controlled to be in the open state, and the power distribution switch of the second power supply system is controlled to be in the closed state. This allows the electrical equipment of the second power supply system to work normally. Thus, when any power supply device in the power supply system consisting of the low-voltage battery and the DC-DC converter fails, the other power supply device can be used to supply power to maintain the normal operation of the vehicle.

[0110] In some embodiments of this application, the control module 1020 is specifically used for:

[0111] In the event that the first target electrical device has malfunctioned, the state of the first target power distribution switch connected to the first target electrical device is controlled to be open, and the state of the power distribution switch corresponding to the same electrical device as the first target electrical device in the second power supply system of the power supply system is controlled to be closed, wherein the first target electrical device is at least one of the electrical devices in the first power supply system.

[0112] In some embodiments of this application, the control module 1020 is specifically used for:

[0113] If it is determined that the first target electrical equipment has malfunctioned and the first target power distribution switch has failed, the state of the disconnect switch is controlled to be open, and the state of the power distribution switch corresponding to the same electrical equipment as the first target electrical equipment in the second power supply system of the power supply system is controlled to be closed.

[0114] In some embodiments of this application, the power distribution parameters of the first target power distribution switch are less than the configuration parameters of the disconnecting switch.

[0115] In some embodiments of this application, the control module 1020 may also be used for:

[0116] If a power supply module failure is determined, the target sub-switch and / or isolating switch shall be set to the open state.

[0117] Wherein, the first power supply system is the low-voltage power supply system, the power supply module is a low-voltage battery, and the target sub-switch is a second switch and / or an isolating switch; or, the first power supply system is the DC-DC power supply system, the power supply module is a DC-DC converter, and the target sub-switch is a first switch and / or an isolating switch.

[0118] In some embodiments of this application, if it is determined that the target module in the first power supply system has not failed, the control module 1020 may also be used to:

[0119] When it is determined that the vehicle is in a dormant state, the state of the isolating switch is controlled to be open, and the state of the M second power distribution switches in the DC-DC power supply system is also controlled to be open.

[0120] In some embodiments of this application, if it is determined that the target module in the first power supply system has not failed, the control module 1020 may also be used to:

[0121] When it is determined that the vehicle has been awakened, the state of the isolating switch is controlled to be closed, and the state of the M second power distribution switches in the DC-DC power supply system is also controlled to be closed.

[0122] The power supply control device provided in this application embodiment can be used to execute the power supply control methods provided in the above method embodiments. Its implementation principle and technical effect are similar, and for the sake of brevity, it will not be described in detail here.

[0123] Based on the same inventive concept, embodiments of this application also provide an electronic device.

[0124] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. For example... Figure 11 As shown, the electronic device may include a processor 1101 and a memory 1102 storing computer programs or instructions.

[0125] Specifically, the processor 1101 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of the present invention.

[0126] Memory 1102 may include mass storage for data or instructions. For example, and not limitingly, memory 1102 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 1102 may include removable or non-removable (or fixed) media. Where appropriate, memory 1102 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 1102 is non-volatile solid-state memory. Memory may include read-only memory (ROM), random-access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, a memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described in the power supply control method provided in the above embodiments.

[0127] The processor 1101 reads and executes computer program instructions stored in the memory 1102 to implement any of the power supply control methods in the above embodiments.

[0128] In one example, the electronic device may also include a communication interface 1103 and a bus 1110. For example, Figure 11 As shown, the processor 1101, memory 1102, and communication interface 1103 are connected through bus 1110 and complete communication with each other.

[0129] The communication interface 1103 is mainly used to realize communication between various modules, devices, units and / or devices in the embodiments of the present invention.

[0130] Bus 1110 includes hardware, software, or both, that couples components of an electronic device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 1110 may include one or more buses. Although specific buses are described and illustrated in embodiments of the invention, the invention contemplates any suitable bus or interconnect.

[0131] The electronic device can execute the power supply control method in the embodiments of the present invention, thereby realizing the power supply control method described in any of the above embodiments.

[0132] Furthermore, in conjunction with the power supply control methods in the above embodiments, this invention can be implemented using a readable storage medium. This readable storage medium stores program instructions; when these program instructions are executed by a processor, they implement any of the power supply control methods described in the above embodiments.

[0133] In addition, in conjunction with the power supply control methods in the above embodiments, the present invention can provide a computer program product, wherein when the instructions in the computer program product are executed by the processor of an electronic device, the electronic device is able to execute any of the power supply control methods in the above embodiments.

[0134] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0135] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0136] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0137] The aspects of this application have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0138] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A power supply system, characterized in that, The system includes: A low-voltage power supply system includes a low-voltage battery, N first power distribution switches, and N first electrical devices. The low-voltage battery is used to supply power to the N first electrical devices. The output terminals of the N first power distribution switches are respectively connected to the N first electrical devices. The N first power distribution switches correspond one-to-one with the N first electrical devices, and N is a positive integer. A DC-DC power supply system includes a power battery, a DC-DC converter, M second power distribution switches, and M second electrical devices. The DC-DC converter converts the high-voltage electrical signal from the power battery into a low-voltage electrical signal to supply power to the M second electrical devices based on the low-voltage electrical signal. One end of the DC-DC converter is connected to the power battery, and the other end is connected to the input terminals of the M second power distribution switches. The output terminals of the M second power distribution switches are connected to the M second electrical devices. The M second power distribution switches correspond one-to-one with the M second electrical devices, and M is a positive integer. The functions of the first electrical devices and the second electrical devices are the same. A disconnecting switch, one end of which is connected to the low-voltage power supply system and the other end of which is connected to the DC-DC power supply system, is used to control the connection status between the low-voltage power supply system and the DC-DC power supply system; The power supply system is configured to: in the event that a power supply module in the first power supply system fails, control the target sub-switch to be in an open state, wherein the first power supply system is the low-voltage power supply system, the power supply module is a low-voltage battery, and the target sub-switch is a second switch and / or an isolating switch.

2. The power supply system according to claim 1, characterized in that, The low-voltage power supply system also includes a low-voltage battery management system, which manages the power of the low-voltage battery. One end of the low-voltage battery management system is connected to the low-voltage battery, and the other end is connected to the disconnecting switch and the input terminals of the N first power distribution switches.

3. The power supply system according to claim 2, characterized in that, A first switch connects the DC-DC converter to the isolating switch and the M second power distribution switches, and a second switch connects the low-voltage battery management system to the isolating switch and the N first power distribution switches.

4. A power supply control method, characterized in that, The power supply control method is applied to the power supply system according to any one of claims 1-3, and the power supply control method includes: Detect whether the target module in the first power supply system has malfunctioned; If the target module is found to be faulty, the target switch in the power supply system is controlled to be in the open state, and the power distribution switch of the second power supply system is controlled to be in the closed state, so that the electrical equipment of the second power supply system can work normally. Wherein, the first power supply system is either the low-voltage power supply system or the DC-DC power supply system, the second power supply system is another subsystem of the low-voltage power supply system and the DC-DC power supply system other than the first power supply system, and the target switch is a switch used to control the disconnection of the switch connected to the target module; The step of controlling the target switch in the power supply system to be in an open state when it is determined that the target module has failed includes: If a power supply module failure is determined, the target sub-switch and / or isolating switch shall be set to the open state. Wherein, the first power supply system is the low-voltage power supply system, the power supply module is a low-voltage battery, and the target sub-switch is a second switch and / or an isolating switch.

5. The power supply control method according to claim 4, characterized in that, The step of controlling the target switch in the power supply system to be in an open state and controlling the distribution switch of the second power supply system in the power supply system to be in a closed state when it is determined that the target module has failed includes: In the event that the first target electrical equipment has malfunctioned, the state of the first target power distribution switch connected to the first target electrical equipment is controlled to be open, and the state of the power distribution switch corresponding to the same electrical equipment as the first target electrical equipment in the second power supply system of the power supply system is controlled to be closed. The first target electrical device is at least one of the electrical devices in the first power supply system.

6. The power supply control method according to claim 5, characterized in that, The step of controlling the target switch in the power supply system to be in an open state and controlling the distribution switch of the second power supply system in the power supply system to be in a closed state when it is determined that the target module has failed includes: If it is determined that the first target electrical equipment has malfunctioned and the first target power distribution switch has failed, the state of the disconnect switch is controlled to be open, and the state of the power distribution switch corresponding to the same electrical equipment as the first target electrical equipment in the second power supply system of the power supply system is controlled to be closed.

7. The power supply control method according to claim 5 or 6, characterized in that, The power distribution parameters of the first target power distribution switch are less than the configuration parameters of the disconnecting switch.

8. The power supply control method according to claim 4, characterized in that, The first power supply system is the DC-DC power supply system, the power supply module is the DC-DC converter, and the target sub-switch is the first switch and / or the disconnecting switch.

9. The power supply control method according to claim 4, characterized in that, If it is determined that the target module in the first power supply system is not faulty, the method further includes: When it is determined that the vehicle is in a dormant state, the state of the isolating switch is controlled to be open, and the state of the M second power distribution switches in the DC-DC power supply system is also controlled to be open.

10. The power supply control method according to claim 9, characterized in that, After controlling the disconnecting switch to the open state and controlling the M second distribution switches in the DC-DC power supply system to be in the open state, the method further includes: When it is determined that the vehicle has been awakened, the state of the isolating switch is controlled to be closed, and the state of the M second power distribution switches in the DC-DC power supply system is also controlled to be closed.

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