A power management control system
By designing a power management and control system, the problem of lack of unified control for the power management of commercial vehicles was solved, achieving accurate and unified management of power signals, reducing component costs and resource waste, and improving the dynamic adaptability and safety of the vehicle's power supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-19
- Publication Date
- 2026-03-27
AI Technical Summary
The lack of unified control over the power management of commercial vehicles leads to high requirements for power purity, resulting in the addition of filtering and power conversion modules, which in turn leads to high component costs and resource waste.
Design a power management and control system, including a filtering module, a voltage conversion module, a diagnostic control module, and a controller area network transceiver module, to achieve unified management and precise control of the vehicle's power signals.
It enables accurate and unified management of the vehicle's power signals, reduces component costs, avoids resource waste, and improves the dynamic adaptability and safety of the vehicle's power supply.
Smart Images
Figure CN114884328B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of vehicle battery, in particular to a power management control system. BACKGROUND
[0002] At present, the commercial vehicle market at home and abroad is equipped with automobile battery, and the commercial vehicle has 24V, 12V, 5V and other power supply requirements. Most of the electric appliances are powered by 24V, some of the general parts of passenger cars are powered by 12V, and some sensors are powered by 5V. The purity of the power supply required by the vehicle is different. Some can be directly powered by the generator or the battery power supply, such as simple motors, traditional lamps, horns, solenoid valves, etc. Some need to be filtered and stabilized, such as sensors, controllers and other precision devices.
[0003] At present, there is no power controller system to manage the power supply of the whole vehicle, so that the power supply purity requirement needs to increase the filter module, and if the power supply is not a battery 24V power supply, the power conversion module needs to be increased, resulting in high cost of parts, and further resulting in a substantial increase in the cost of the whole vehicle. According to the dispersed power supply and the management of the power supply of each part, it is also easy to cause waste of resources, for example, a power conversion module is added to a part, but the part often only uses 30% of the working current of the power conversion module, resulting in great waste. The increase of filter module in each part is also one of the reasons why the part cannot be miniaturized and lightened; at the same time, when the vehicle is replaced, the part position realizing the power filtering and voltage stabilizing function needs to be replaced due to the need to adapt to the change of the power of the whole vehicle.
[0004] Therefore, at present, there is an urgent need for a power management control system which can accurately and uniformly manage the whole vehicle power signal output. SUMMARY
[0005] The present application provides a power management control system to solve the technical problem that the whole vehicle power signal output cannot be accurately and uniformly managed in the prior art.
[0006] In order to solve the above technical problem, the embodiment of the present application provides a power management control system, comprising: a filter module, a voltage conversion module, a diagnostic control module and a controller area network transceiver module;
[0007] The filter module is connected with the diagnostic control module, and the filter module is also connected with the diagnostic control module by accessing the voltage conversion module; wherein the filter module is used for filtering the input power signal, and the voltage conversion module is used for voltage conversion of the filtered power signal;
[0008] The controller area network transceiver module is connected with the diagnostic control module; wherein, the controller area network transceiver module is used for receiving and detecting the state of the vehicle controller network message, and sending a control signal to the diagnostic control module according to the state of the vehicle controller network message, so that the diagnostic control module performs power-off or power-on operation;
[0009] The diagnostic control module is used for detecting and controlling the power supply signal output by the filtering module and the voltage conversion module.
[0010] It can be understood that, compared with the prior art, the present application can filter and voltage convert the input power supply voltage through the filtering module and the voltage conversion module, so that the diagnostic control module can detect and accurately control the filtered or voltage converted power supply signal, and the controller area network transceiver module can also receive and detect the vehicle controller network message, and send corresponding control signals to the diagnostic control module according to the state of the vehicle controller network message to perform corresponding power-off or power-on operation, thereby realizing accurate and efficient unified management of the vehicle power supply signal output, without the need to manage the power supply output of each device according to the respective parts, and avoiding the problem of high cost of each scattered part.
[0011] As a preferred solution, the controller area network transceiver module is used for receiving and detecting the state of the vehicle controller network message, and sending a control signal to the diagnostic control module according to the state of the vehicle controller network message, so that the diagnostic control module performs power-off or power-on operation, specifically:
[0012] determining whether the vehicle controller network message is received;
[0013] If not, a no-message state is generated, and a power-off signal is sent to the diagnostic control module, so that the diagnostic control module performs vehicle power-off;
[0014] If yes, the state of the vehicle controller network message is detected, and a power-on signal is generated and sent to the diagnostic control module together with the state of the vehicle controller network message, so that the diagnostic control module performs vehicle power-on;
[0015] The control signal includes a power-off signal and a power-on signal.
[0016] It can be understood that the controller area network transceiver module can detect the received vehicle controller network message to obtain the state of the vehicle controller network message, and generate a corresponding power-off signal or power-on signal according to the state of the corresponding vehicle controller network message, thereby reducing the vehicle static current or ensuring the vehicle operation function, and accurately controlling the vehicle power supply by comprehensively controlling the vehicle controller network, thereby protecting the vehicle power supply.
[0017] As a preferred solution, the diagnostic control module is configured to detect and control the power supply signals output by the filter module and the voltage conversion module, in particular:
[0018] detecting the power supply signals output by the filter module and the voltage conversion module to obtain the current of each power supply, and judging whether each power supply has a fault according to the preset value corresponding to each power supply;
[0019] If one or more power supplies have a fault, then the power supplies that have a fault are turned off.
[0020] It can be understood that the diagnostic control module can detect the power supply signals output by the filter module and the voltage conversion module, and control the opening and closing of each power supply. When it is detected that one or more power supplies have a fault, the power supplies that have a fault are turned off, thereby protecting the power supplies from further accidents.
[0021] As a preferred solution, the controller area network transceiver module is further configured to:
[0022] updating the preset value corresponding to each power supply in the diagnostic control module according to the upgrade instruction sent by the external network platform.
[0023] It can be understood that since the load of the whole vehicle is likely to change, when the vehicle replaces different load electrical appliances, the current of the whole vehicle is likely to change. The controller area network transceiver module can remotely upgrade the diagnostic control module and update the preset value corresponding to each power supply according to the upgrade instruction sent by the external network platform, so that the diagnostic control module can adapt to the power change of the electrical appliances of the whole vehicle, and the power supply controller of the whole vehicle does not need to be replaced due to the power change of the electrical appliances, thereby improving the overall dynamic adaptability.
[0024] As a preferred solution, the preset value is determined by the power of the external load of each power supply.
[0025] It can be understood that the preset value of each power supply is determined by the power of the external load corresponding to each power supply, so that each power supply can be accurately compared according to the preset value of each power supply, thereby improving the accuracy of the overall system.
[0026] As a preferred solution, the filter module includes a constant power filter module, a 5V power filter module, a 12V power filter module, a power supply master switch power filter module, an IG1 power filter module, an ACC power filter module, and an IG2 power filter module.
[0027] The voltage conversion module includes a 5V voltage conversion module and a 12V voltage conversion module.
[0028] The constant current filtering module, the main power switch filtering module, the IG1 filtering module, the ACC filtering module, and the IG2 filtering module are connected to the diagnostic control module;
[0029] The 5V electrical filter module is connected to the 5V voltage conversion module and then to the diagnostic control module;
[0030] The 12V electrical filter module is connected to the 12V voltage conversion module and then to the diagnostic control module.
[0031] As a preferred embodiment, the constant voltage filter module, the 5V voltage filter module, the 12V voltage filter module, and the main power switch voltage filter module are all connected to the vehicle power supply.
[0032] The IG1 electrical filter module, the ACC electrical filter module, and the IG2 electrical filter module are all connected to the electric lock switch.
[0033] Understandably, the different filtering modules and voltage conversion modules corresponding to each power supply ensure that each power supply can adapt to its own power line for filtering and voltage conversion, so that the power lines of the whole vehicle can work stably.
[0034] As a preferred embodiment, the system further includes a power classification module, which is used to separate the START, ACC, and ON electrical signals so that the START, ACC, and ON signals are respectively input into the IG1 electrical filter module, the ACC electrical filter module, and the IG2 electrical filter module; wherein the electric lock switch can output the START, ACC, and ON electrical signals.
[0035] Understandably, the power classification module can separate the signals of each circuit of the electric lock switch, avoid the confusion of electrical signals between different lines of the electric lock, and improve the filtering efficiency of the IG1 electrical filter module, ACC electrical filter module and IG2 electrical filter module for the electrical signals of their respective lines.
[0036] As a preferred embodiment, the circuit output by the diagnostic control module includes: a clean 24V constant power terminal, a ground terminal, a non-clean 24V constant power terminal, a clean 5V power terminal, a clean 12V power terminal, a non-clean power main switch power terminal, a clean power main switch power terminal, a clean IG1 power terminal, a non-clean IG1 power terminal, a clean ACC power terminal, a non-clean ACC power terminal, a clean IG2 power terminal, and a non-clean IG2 power terminal.
[0037] It can be understood that the filtered module output and the voltage output by the filtered module and the voltage conversion module can output the pure voltage after the output of the diagnostic control module, and the non-pure voltage without the filtering module can also be output, so that the power management control system of the whole vehicle can provide voltage signals for multiple purposes, and can be suitable for the operation of the whole vehicle. BRIEF DESCRIPTION OF DRAWINGS
[0038] Figure 1 A structural schematic diagram of a power management control system provided by an embodiment of the present application is provided.
[0039] Figure 2 An internal structure diagram of a power management control system provided by an embodiment of the present application is provided.
[0040] Figure 3 A structural schematic diagram of a commercial vehicle 24V power management control system provided by an embodiment of the present application is provided.
[0041] Figure 4 A structural schematic diagram of a normal power filter provided by an embodiment of the present application is provided. DETAILED DESCRIPTION
[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0043] Embodiment one
[0044] Please refer to Figure 1 A power management control system provided by an embodiment of the present application includes a filtering module 101, a voltage conversion module 102, a diagnostic control module 103 and a controller area network transceiver module 104.
[0045] The filtering module 101 is connected with the diagnostic control module 103, and the filtering module 101 is also connected with the diagnostic control module 103 by accessing the voltage conversion module 102; wherein the filtering module 101 is used for filtering the input power signal, and the voltage conversion module 102 is used for voltage conversion of the filtered power signal.
[0046] The controller area network transceiver module 104 is connected with the diagnostic control module 103; wherein the controller area network transceiver module 104 is used for receiving and detecting the state of the vehicle controller network message, and sending a control signal to the diagnostic control module 103 according to the state of the vehicle controller network message, so that the diagnostic control module 103 performs power-off or power-on operation.
[0047] The diagnostic control module 103 is used for detecting and controlling the power supply signal output by the filter module 101 and the voltage conversion module 102.
[0048] As a preferred scheme of the embodiment, the controller area network transceiver module 104 is used for receiving and detecting the state of the vehicle controller network message, and sending a control signal to the diagnostic control module 103 according to the state of the vehicle controller network message, so that the diagnostic control module 103 performs power-off or power-on operation, specifically:
[0049] determining whether the vehicle controller network message is received; if not, generating a no-message state and sending a power-off signal to the diagnostic control module 103, so that the diagnostic control module 103 performs vehicle power-off; if yes, detecting the state of the vehicle controller network message and generating a power-on signal, and sending the power-on signal and the state of the vehicle controller network message to the diagnostic control module 103, so that the diagnostic control module 103 performs vehicle power-on; wherein the control signal includes the power-off signal and the power-on signal.
[0050] It should be noted that the controller area network transceiver module 104 accesses the vehicle CAN network, detects the vehicle CAN network, and controls the on-off of each power supply by detecting whether there is a message in the vehicle CAN network, thereby reducing the vehicle static current and prolonging the service life of the battery.
[0051] It can be understood that the controller area network transceiver module 104 can detect the received vehicle controller network message to obtain the state of the vehicle controller network message, and generate a corresponding power-off signal or power-on signal according to the state of the corresponding vehicle controller network message, thereby reducing the vehicle static current or ensuring the vehicle operation function, and comprehensively controlling the vehicle controller network to accurately control the vehicle power supply, thereby protecting the vehicle power supply.
[0052] As a preferred scheme of the embodiment, the diagnostic control module 103 is used for detecting and controlling the power supply signal output by the filter module 101 and the voltage conversion module 102, specifically:
[0053] Detect the power supply signals output by the filtering module 101 and the voltage conversion module 102 to obtain the current of each power supply, and determine whether each power supply has a fault according to the preset value corresponding to each power supply; if one or more power supplies have a fault, then turn off the power supplies that have a fault.
[0054] It should be noted that the comparison protection can be performed according to the preset current value of each power supply and the detected current value, and each power supply is independently protected. When one or more power supplies are short-circuited, the short-circuited power supply is disconnected to avoid accidents such as automobile fire, and the use of other power supplies is not affected. At the same time, the diagnostic control module 103 can detect the power supply signals output by the filtering module 101 and the voltage conversion module 102, and control the opening and closing of each power supply. When it is detected that one or more power supplies have a fault, the power supplies that have a fault are turned off, thereby protecting the power supply from further accidents.
[0055] As a preferred scheme of the embodiment, the controller area network transceiver module 104 is further configured to:
[0056] According to the upgrade instruction sent by the external network platform, update the preset value corresponding to each power supply in the diagnostic control module 103.
[0057] It should be noted that the controller area network transceiver module 104 receives the vehicle CAN network for remote OTA software upgrade, uses the change of vehicle electrical power, reduces the upgrade cost of vehicle electrical appliances, and improves convenience. For example, after replacing different power electrical appliances, software upgrade needs to be actively applied through a mobile phone APP. After the external network platform receives the request, remote OTA software upgrade is performed according to the reported electrical appliance content.
[0058] It can be understood that since the vehicle load is likely to change, when the vehicle replaces different load electrical appliances, the current of the vehicle is likely to change. The controller area network transceiver module 104 can remotely upgrade the diagnostic control module 103 and update the preset value corresponding to each power supply according to the upgrade instruction sent by the external network platform, so that the diagnostic control module 103 can adapt to the change of vehicle electrical power, and the vehicle power supply controller does not need to be replaced due to the change of electrical power, thereby improving the overall dynamic adaptability.
[0059] As a preferred scheme of the embodiment, the preset value is determined by the power of the external load of each power supply.
[0060] It should be noted that the preset value of each power supply is different, and the preset value of each power supply is calculated according to the power of the external load. For example, the power of the external load is 96W, the required current is calculated to be 4A, the overload current value is set to 8A, and the short-circuit current value is set to 16A.
[0061] Understandably, the preset values for each power supply are determined by the power of the external load corresponding to that power supply, so that each power supply can be accurately compared based on its preset values, thus improving the accuracy of the overall system.
[0062] Please see Figure 2 In a preferred embodiment, the filtering module includes a constant current filtering module, a 5V filtering module, a 12V filtering module, a main power switch filtering module, an IG1 filtering module, an ACC filtering module, and an IG2 filtering module; the voltage conversion module includes a 5V voltage conversion module and a 12V voltage conversion module; the constant current filtering module, the main power switch filtering module, the IG1 filtering module, the ACC filtering module, and the IG2 filtering module are connected to the diagnostic control module; the 5V filtering module is connected to the 5V voltage conversion module and then to the diagnostic control module; the 12V filtering module is connected to the 12V voltage conversion module and then to the diagnostic control module.
[0063] In a preferred embodiment, the constant voltage filter module, the 5V filter module, the 12V filter module, and the main power switch filter module are all connected to the vehicle power supply; the IG1 filter module, the ACC filter module, and the IG2 filter module are all connected to the electric lock switch.
[0064] Understandably, the different filtering modules and voltage conversion modules corresponding to each power supply ensure that each power supply can adapt to its own power line for filtering and voltage conversion, so that the power lines of the whole vehicle can work stably.
[0065] As a preferred embodiment, the system further includes a power classification module, which is used to separate the START, ACC, and ON electrical signals so that the START, ACC, and ON signals are respectively input into the IG1 electrical filter module, the ACC electrical filter module, and the IG2 electrical filter module; wherein the electric lock switch can output the START, ACC, and ON electrical signals.
[0066] Understandably, the power classification module can separate the signals of each circuit of the electric lock switch, avoid the confusion of electrical signals between different lines of the electric lock, and improve the filtering efficiency of the IG1 electrical filter module, ACC electrical filter module and IG2 electrical filter module for the electrical signals of their respective lines.
[0067] As a preferred solution, the circuit output by the diagnostic control module comprises: a pure 24V constant power terminal, a ground terminal, a non-pure 24V constant power terminal, a pure 5V power terminal, a pure 12V power terminal, a non-pure power supply total switch power terminal, a pure power supply total switch power terminal, a pure IG1 power terminal, a non-pure IG1 power terminal, a pure ACC power terminal, a non-pure ACC power terminal, a pure IG2 power terminal, and a non-pure IG2 power terminal.
[0068] It can be understood that, after the filtered module output and the voltage output by the filtered module and the voltage conversion module are output by the diagnostic control module, a filtered and voltage-converted pure voltage can be output, and a non-pure voltage without filtering by the filtered module can also be output, so that the power management control system of the whole vehicle can provide voltage signals of multiple purposes and can be suitable for the operation of the whole vehicle, the power supply of the whole vehicle is divided into multiple types, the power supply can be reasonably classified, and the power supply type can be reasonably selected according to the use scene and requirements, so as to avoid unnecessary waste or other protection caused by no suitable power supply.
[0069] The above embodiment has the following effects:
[0070] Compared with the prior art, the embodiment of the present application can filter and voltage-convert the input power supply voltage by the filtered module and the voltage conversion module, so that the diagnostic control module can detect and accurately control the filtered or voltage-converted power supply signal, the controller area network transceiver module can also receive and detect the vehicle controller network message, and according to the state of the vehicle controller network message, the corresponding control signal is sent to the diagnostic control module for corresponding power-off or power-on operation, so that accurate and efficient unified management of the output of the whole vehicle power supply signal is realized, the power supply output of each device does not need to be managed by dispersing power supply and respective parts, and the problem of high cost of each dispersed part is also avoided.
[0071] Embodiment two
[0072] Please refer to Figure 3It is a 24V power management control system for commercial vehicles. The system is connected to the vehicle power supply, electric lock switch, power supply master switch, and vehicle CAN network. The power management control system includes: constant power filtering module, 5V voltage conversion module, 12V voltage conversion module, power classification module, IG1 electric filter module, ACC electric filter module, IG2 electric filter module, controller area network transceiver module, diagnostic control module, 5V electric filter module, 12V electric filter module, and power supply master switch electric filter module. The vehicle power management control system is powered by the vehicle power supply and the power supply master switch. It collects START, ACC, and ON signals through the electric lock switch and outputs 12 types of power, including pure 24V constant power, non-pure 24V constant power, pure 5V power, pure 12V power, pure IG1 power, non-pure IG1 power, pure ACC power, non-pure ACC power, pure IG2 power, non-pure IG2 power, non-pure power supply master switch power, and pure power supply master switch power.
[0073] The power classification module is powered by the power supply master switch and collects START, ACC, and ON signals. It divides the power into IG1 power (startup without power loss), ACC power, and IG2 power (startup with power loss) through internal control circuits.
[0074] The diagnostic control module can diagnose the current of each power supply and compare it with the pre-set value to determine whether the external power supply is overloaded or short-circuited. It can control the on-off of each power supply independently or simultaneously. For example, when a certain power supply is short-circuited, it immediately turns off that power supply without affecting other power supplies. When multiple power supplies are short-circuited due to certain reasons, the module can turn off multiple power supplies simultaneously to prevent accidents such as vehicle self-ignition caused by multiple faults.
[0075] The 5V power conversion module can convert 24V power into stable 5V power, and the 12V voltage conversion module can convert 24V power into stable 12V power. Please refer to Figure 4 The constant power filtering module is composed of TVS tube T1, capacitor C1, capacitor C2, MOS tube Q1, resistor R1, common mode inductor L1, capacitor C3, and capacitor C4. It mainly filters and stabilizes the non-pure power input from the battery and converts it into pure power. TVS tube T1 is used to clamp the voltage within a stable voltage range. Capacitors C1 and C3 are used to filter high-frequency glitches. Capacitors C2 and C4 are used to filter low-frequency glitches. MOS tube Q1 is used to prevent reverse connection of the power supply. Resistor R1 is used for current limiting. Common mode inductor L1 is used to filter frequency signals and ground drift. Finally, the power is filtered into pure power.
[0076] It should be noted that the power supply filter module of the power switch, IG1, ACC, and IG2 is the same as the normal power filter module, and the power supply filter module of 5V and 12V is the same as the normal power filter module in principle, but the internal part of the device is not the same, so the voltage clamping range is not the same.
[0077] The normal power is divided into four paths, one of which passes through the normal power filter module and then passes through the diagnostic control module to output pure 24V power; the second path passes through the direct diagnostic control module to output non-pure 24V normal power; the third path passes through the 5V power filter module, then passes through the 5V voltage conversion module, and finally passes through the diagnostic control module to output pure 5V power; and the fourth path passes through the 12V power filter module, then passes through the 12V voltage conversion module, and finally passes through the diagnostic control module to output pure 12V power.
[0078] The power switch is divided into three paths, one of which directly passes through the diagnostic control module to output non-pure power switch power; the second path passes through the power switch filter module and then passes through the diagnostic control module to output pure power switch power; and the third path is input to the power classification module. The power classification module collects the START signal, ACC signal and ON signal, and divides the power switch into IG1 power, ACC power and IG2 power.
[0079] The IG1 power is divided into two paths, one of which passes through the IG1 power filter module and then passes through the diagnostic control module to output pure IG1 power; and the other path passes through the diagnostic control module to output non-pure IG1 power.
[0080] The IG2 power is divided into two paths, one of which passes through the IG2 power filter module and then passes through the diagnostic control module to output pure IG2 power; and the other path passes through the diagnostic control module to output non-pure IG2 power.
[0081] The ACC power is divided into two paths, one of which passes through the ACC power filter module and then passes through the diagnostic control module to output pure ACC power; and the other path passes through the diagnostic control module to output non-pure ACC power.
[0082] The above embodiments have the following effects:
[0083] The embodiments of the application uniformly manage and classify the required power of the whole vehicle, and rationally utilize the resources, without the need to increase the power filter module and the power conversion module for each controller, sensor and other electrical devices of the whole vehicle, thereby reducing resource waste and reducing the cost of the whole vehicle. At the same time, the power of the whole vehicle is divided into 12 kinds, and the power is rationally classified. The electrical devices can select the power type according to the use scene and requirements, thereby avoiding unnecessary waste or other protection caused by the lack of suitable power.
[0084] The above-described specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A power management and control system, characterized in that, include: Filtering module, voltage conversion module, diagnostic control module, and controller area network transceiver module; The filtering module is connected to the diagnostic control module, and the filtering module is also connected to the diagnostic control module after being connected to the voltage conversion module; wherein, the filtering module is used to filter the input power signal, and the voltage conversion module is used to convert the voltage of the filtered power signal; The controller domain network transceiver module is connected to the diagnostic control module; wherein, the controller domain network transceiver module is used to send and receive and detect the status of the vehicle controller network messages, and send control signals to the diagnostic control module according to the status of the vehicle controller network messages, so as to enable the diagnostic control module to perform power-off or power-on operations; The diagnostic control module is used to detect and control the power signals output by the filtering module and the voltage conversion module; wherein, the filtering module includes a constant power filtering module, a 5V power filtering module, a 12V power filtering module, a main power switch power filtering module, an IG1 power filtering module, an ACC power filtering module, and an IG2 power filtering module; the voltage conversion module includes a 5V voltage conversion module and a 12V voltage conversion module; The constant power filter module, the main power switch filter module, the IG1 filter module, the ACC filter module, and the IG2 filter module are connected to the diagnostic control module; the constant power filter module, the 5V filter module, the 12V filter module, and the main power switch filter module are all connected to the vehicle power supply; the 5V filter module is connected to the 5V voltage conversion module and then to the diagnostic control module; the 12V filter module is connected to the 12V voltage conversion module and then to the diagnostic control module; the IG1 filter module, the ACC filter module, and the IG2 filter module are all connected to the ignition switch. The power management and control system further includes a power classification module, which is used to split the START, ACC, and ON electrical signals so that they are respectively input into the IG1, ACC, and IG2 electrical filtering modules. Each electric lock switch can output START, ACC, and ON electrical signals. The output of the power classification module is connected to the diagnostic control module. The circuit output by the diagnostic control module includes: a clean 24V constant power terminal, a ground terminal, a non-clean 24V constant power terminal, a clean 5V power terminal, a clean 12V power terminal, a non-clean power main switch power terminal, a clean power main switch power terminal, a clean IG1 power terminal, a non-clean IG1 power terminal, a clean ACC power terminal, a non-clean ACC power terminal, a clean IG2 power terminal, and a non-clean IG2 power terminal; the output of the vehicle power supply and the output of the power main switch connected to the vehicle are connected to the diagnostic control module.
2. The power management and control system as described in claim 1, characterized in that, The controller domain network transceiver module is used to send, receive, and detect the status of vehicle controller network packets, and send control signals to the diagnostic control module according to the status of the vehicle controller network packets, so that the diagnostic control module can perform power-off or power-on operations, specifically: Determine whether a network message from the vehicle controller has been received; If none is found, a no-message state is generated, and a power-off signal is sent to the diagnostic control module to cause the diagnostic control module to power off the entire vehicle. If so, the status of the vehicle controller network message is detected and a power-on signal is generated. The power-on signal and the status of the vehicle controller network message are then sent to the diagnostic control module so that the diagnostic control module can power on the vehicle. The control signals include power-off signals and power-on signals.
3. The power management and control system as described in claim 1, characterized in that, The diagnostic control module is used to detect and control the power signals output by the filtering module and the voltage conversion module, specifically: The power signals output by the filtering module and the voltage conversion module are detected to obtain the current of each power supply, and the power supply is judged to be faulty based on the preset value corresponding to each power supply. If one or more power supplies fail, then the power supply that is failing will be shut down.
4. A power management and control system as described in claim 3, characterized in that, The controller domain network transceiver module is also used for: Based on the upgrade instructions sent from the external network platform, the preset values corresponding to each power supply in the diagnostic control module are updated.
5. A power management and control system as described in any one of claims 3 or 4, characterized in that, The preset value is determined by the power of the external load of each power supply.
Citation Information
Patent Citations
Power management circuit of vehicle control unit and control method thereof
CN105711520A