Annular power supply system, control method, electronic equipment and vehicle

Abstract

The invention provides an annular power supply system, a control method, electronic equipment and a vehicle. The annular power supply system comprises a first power supply; a second power supply; the intelligent power distribution device is arranged between the first power supply and the second power supply, the intelligent power distribution device comprises at least two intelligent power distribution modules which are arranged in parallel, each intelligent power distribution module comprises at least one power distribution unit, and the power distribution unit is used for being connected with at least one load. The first power supply and the second power supply can supply power to the load from different power supply paths, and even if a certain power supply and a power supply path thereof fail and cannot continue to supply power to the load, the other power supply can still continue to supply power to the load from the other power supply path, so that uninterrupted power supply of the load is realized; the damage caused by failure of a power supply system in a traditional power supply framework is eliminated, and the reliability of load power distribution is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a ring power supply system, a control method, an electronic device and a vehicle. Background Art

[0002] As the demand for vehicle intelligence continues to increase, it is particularly important to provide safer power supply for vehicles. The traditional low-voltage power distribution architecture is a tree-shaped one, including the existing redundant power distribution architecture. When the low-voltage power grid supply system fails due to short circuits or circuit breaks, the power supply to the control components connected to the power grid system corresponding to the failed part is interrupted, and the components will not be able to work normally, which may lead to a risk of loss of control and endanger the safety of drivers and passengers. Even if a redundant power distribution architecture is used, there will be problems with component function loss due to abnormal power supply.

[0003] Therefore, how to achieve uninterrupted power supply to the load in order to eliminate the hazards caused by power system failure in the traditional power supply architecture, improve the reliability of power distribution to the safe load, and ensure the safety of drivers and passengers is an urgent problem to be solved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a ring power supply system, a control method, an electronic device and a vehicle.

[0005] Based on the above purpose, the first aspect of the present application provides a ring power supply system, including:

[0006] a first power supply;

[0007] A second power supply;

[0008] An intelligent power distribution device, arranged between the first power supply and the second power supply, the intelligent power distribution device comprising at least two intelligent power distribution modules arranged in parallel, each of the intelligent power distribution modules comprising at least one power distribution unit, and the power distribution unit being used to be connected to at least one load;

[0009] Optionally, the power distribution unit includes a first controllable switch, a second controllable switch and a microcontroller, there is a first node between the first controllable switch and the second controllable switch, the first node is used to connect to the at least one load, and the microcontroller controls the first power supply or the second power supply to supply power to all the loads by controlling the opening and closing of the first controllable switch and the second controllable switch.

[0010] Optionally, both the first controllable switch and the second controllable switch are unidirectional MOS transistor switches, and the preset current reverse directions of the two unidirectional MOS transistor switches are opposite.

[0011] Optionally, the power distribution unit further includes a first sampling resistor and a second sampling resistor, the first sampling resistor is connected to the first controllable switch, the second sampling resistor is connected to the second controllable switch, and the first controllable switch and the second controllable switch are located between the first sampling resistor and the second sampling resistor;

[0012] And / or, a third sampling resistor and a load controllable switch are connected in series between the first node and the load.

[0013] Optionally, the microcontroller includes a logic processing unit and an acquisition control unit;

[0014] The acquisition control unit is connected to the first sampling resistor, the second sampling resistor, the third sampling resistor, the first controllable switch, the second controllable switch and the load controllable switch respectively, and is used to acquire circuit information of the first sampling resistor, the second sampling resistor and the third sampling resistor, send the circuit information to the logic processing unit, and control the opening and closing of the first controllable switch, the second controllable switch and the load controllable switch;

[0015] The logic processing unit is connected to the first power supply, the second power supply and the acquisition control unit, and is used to receive the circuit information, generate a control instruction based on the circuit information, and send the control instruction to the acquisition control unit.

[0016] A second aspect of the present application provides a method for controlling the ring power supply system according to any one of the first aspects, including:

[0017] Obtaining current circuit information of a target controllable switch in each power distribution unit;

[0018] In response to the current circuit information meeting a preset disconnection rule, disconnecting the target controllable switch;

[0019] In response to the disconnection time of the target controllable switch being consistent with the preset disconnection time, closing the target controllable switch and continuing to collect current circuit information of the target controllable switch;

[0020] In response to the current circuit information meeting the preset disconnection rule, the target controllable switch is disconnected.

[0021] Optionally, before acquiring the current circuit information of the target controllable switch in each power distribution unit, the method further includes:

[0022] Obtaining the direction of current flowing through the first controllable switch or the second controllable switch in each power distribution unit;

[0023] In response to the current direction being the same as a preset current reverse direction of the first controllable switch or the second controllable switch, the first controllable switch or the second controllable switch is determined to be a target controllable switch, wherein the preset current reverse directions of the first controllable switch and the second controllable switch are opposite.

[0024] Optionally, a load-controllable switch is provided between the load and the first node; and the method further includes:

[0025] Obtaining current load circuit information of each load controllable switch in each power distribution unit;

[0026] In response to a current load circuit information meeting a preset load disconnection rule, disconnecting a load controllable switch corresponding to the load circuit information;

[0027] In response to the disconnection time of the load-controllable switch being consistent with the preset load disconnection time, the load-controllable switch is closed, and the current load circuit information of the load-controllable switch is continuously collected;

[0028] In response to the current load circuit information meeting the preset load disconnection rule, the load controllable switch is disconnected.

[0029] A third aspect of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method described in any one of the second aspects above is implemented.

[0030] A fourth aspect of the present application provides a vehicle, comprising the ring power supply system described in any one of the first aspect or the electronic device described in the third aspect.

[0031] From the above, it can be seen that the ring power supply system, control method, electronic device and vehicle provided in the present application form a ring power supply system through a first power supply, a second power supply, and at least two intelligent distribution modules arranged in parallel between the first power supply and the second power supply. The first power supply and the second power supply can supply power to the load from different power supply paths. Even if a power supply and its power supply path fail and cannot continue to supply power to the load, the other power supply can still continue to supply power to the load from another power supply path, thereby achieving uninterrupted power supply to the load, eliminating the hazards caused by power supply system failure in the traditional power supply architecture, and improving the reliability of power distribution to the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a tree-shaped low-voltage power distribution architecture including redundant power distribution in the related art;

[0034] Figure 2 A first schematic diagram of a ring power supply system according to an embodiment of the present application;

[0035] Figure 3 A second schematic diagram of a ring power supply system according to an embodiment of the present application;

[0036] Figure 4 This is a first schematic diagram of a power distribution unit according to an embodiment of the present application;

[0037] Figure 5 A second schematic diagram of a power distribution unit according to an embodiment of the present application;

[0038] Figure 6 A first flow chart of the control method according to an embodiment of the present application;

[0039] Figure 7 A second flow chart of the control method according to an embodiment of the present application;

[0040] Figure 8 A schematic diagram of the structure of an electronic device according to an embodiment of the present application.

[0041] In the figure, 1, first power supply; 2, second power supply; 3, intelligent power distribution device; 31, intelligent power distribution module; 311, power distribution unit; 3111, first controllable switch; 3112, second controllable switch; 3113, microcontroller; 31131, logic processing unit; 31132, acquisition control unit; 311321, temperature acquisition element; 31133, power communication unit; 3114, first sampling resistor; 3115, second sampling resistor; 4, load controllable switch; 5, load; 6, third sampling resistor. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0043] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The traditional low-voltage power distribution architecture is a tree-shaped architecture, including the existing redundant power distribution architecture. Figure 1 , Figure 1 The schematic diagram of the existing tree-shaped low-voltage power distribution architecture including redundant power distribution is shown as an example. Figure 1 It can be seen that in the existing low-voltage power distribution structure, the power generation device consumes electricity to the corresponding loads after passing through the main road and the branch road in sequence. Once the power generation device, the main road or the branch road has a short circuit, a circuit breaker or other faults, the load corresponding to the faulty part will lose its power supply source, so that it cannot work normally, and there is a risk of loss of control, which endangers the personal safety of drivers and passengers. Even if a redundant power distribution architecture is used, there will be problems with component function loss due to abnormal power supply.

[0045] Based on this, the present application provides a ring power supply system, a control method and a vehicle to provide ring power supply for the load. When a fault occurs in any section of the power supply path, the controllable switch at the faulty part can be controlled to disconnect, and then the current is distributed through other paths to achieve uninterrupted power distribution to the load, so as to eliminate the hazards caused by the failure of the power supply system in the traditional power supply architecture, improve the reliability of power distribution to the load, and ensure the safety of the driver and passengers.

[0046] Specifically, see Figure 2 , the present application provides a ring power supply system, comprising:

[0047] A first power supply 1;

[0048] A second power supply 2;

[0049] The intelligent power distribution device 3 is arranged between the first power supply 1 and the second power supply 2. The intelligent power distribution device 3 includes at least two intelligent power distribution modules 31 arranged in parallel. Each of the intelligent power distribution modules 31 includes at least one power distribution unit 311. The power distribution unit 311 is used to connect to at least one load 5.

[0050] Specifically, the first power supply 1 and the second power supply 2 can supply power to the intelligent power distribution device 3 and the connected load 5 through different power supply paths. In specific implementation, one of the first power supply 1 and the second power supply 2 is an input end, and the other is an output end. For example, see Figure 2 When the first power supply 1 supplies power, the current can flow from the first power supply 1 to the second power supply 2 through the intelligent distribution device 3; when the second power supply 2 supplies power, the current can flow from the second power supply 2 to the first power supply 1 through the intelligent distribution device 3. In this way, the first power supply 1 and the second power supply 2 can supply power to the intelligent distribution device 3 and the connected load 5 through different power supply paths.

[0051] For example, the first power supply 1 can be a power generation device of the vehicle. After the vehicle is powered on, the power generation device supplies power to the electrical equipment of the vehicle, and can also charge the second power supply 2 through the intelligent power distribution device 3. The second power supply 2 can be a battery of the vehicle. Before the vehicle is started, the battery supplies power to the electrical equipment of the vehicle, ensuring that the high-voltage system of the vehicle can be reliably powered on under various circumstances. In addition, when the vehicle is idling or stopped, the battery can guarantee part or all of the power required for other important systems within a certain period of time.

[0052] Wherein, monitoring devices are provided in the first power supply 1 and the second power supply 2 to monitor the voltage, current and temperature of their own circuits.

[0053] Each of the intelligent power distribution modules 31 includes at least one power distribution unit 311. When the intelligent module includes multiple power distribution units 311, the multiple power distribution units 311 are arranged in series between the first power supply 1 and the second power supply 2. The first power supply 1 or the second power supply 2 can supply power to the multiple power distribution units 311, and then the power distribution units 311 supply power to the load 5 connected thereto.

[0054] The ring power supply system described in the present application is composed of a first power supply 1, a second power supply 2, and at least two intelligent distribution modules 31 arranged in parallel between the first power supply 1 and the second power supply 2. The first power supply 1 and the second power supply 2 can supply power to the load 5 from different power supply paths. Even if a power supply and its power supply path fail and cannot continue to supply power to the load 5, the other power supply can still continue to supply power to the load 5 from another power supply path, thereby achieving uninterrupted power supply to the load 5, ensuring that the load 5 can work normally under various circumstances, eliminating the hazards caused by power supply system failure in the traditional power supply architecture, and improving the reliability of power distribution to the load 5.

[0055] In some embodiments, the power distribution unit 311 includes a first controllable switch 3111, a second controllable switch 3112 and a microcontroller 3113, there is a first node between the first controllable switch 3111 and the second controllable switch 3112, the first node is connected to at least one load 5, and the microcontroller 3113 controls the first power supply 1 or the second power supply 2 to supply power to all the loads 5 by controlling the opening and closing of the first controllable switch 3111 and the second controllable switch 3112.

[0056] Specifically, the power distribution unit 311 includes a first controllable switch 3111, a second controllable switch 3112 and a microcontroller 3113. The microcontroller 3113 is electrically connected to the first controllable switch 3111 and the second controllable switch 3112. The microcontroller 3113 can collect and determine the fault location on the power supply path and intelligently control the opening and closing of the first controllable switch 3111 or the second controllable switch 3112 corresponding to the fault location to ensure the reliability of power distribution to the load 5.

[0057] There is a first node between the first controllable switch 3111 and the second controllable switch 3112, and the first node is connected to at least one load 5. When the first node is connected to multiple loads 5, the multiple loads 5 are arranged in parallel so that the multiple loads 5 do not affect each other. The load 5 can be a component of the vehicle with a high functional safety level requirement, such as a braking system, a steering system, an intelligent driving system, etc.

[0058] For specific implementation, see Figure 3 In this embodiment, the first power supply 1 is used as the power supply device of the vehicle, the second power supply 2 is the battery of the vehicle, the intelligent distribution device 3 includes two intelligent distribution modules 31 arranged in parallel, each intelligent distribution module 31 includes two distribution units 311 connected in series, and the first node of each distribution unit 311 is connected to a ring power supply system composed of three parallel loads 5. The ring power supply system described in the present application is further explained.

[0059] For the convenience of description below, the four distribution units 311 are named as the first distribution unit A, the second distribution unit B, the third distribution unit C, and the fourth distribution unit D, respectively. The first controllable switch 3111 and the second controllable switch 3112 in the first distribution unit A are marked as switch A1 and switch A2, respectively, the first controllable switch 3111 and the second controllable switch 3112 in the second distribution unit B are marked as switch B1 and switch B2, respectively, the first controllable switch 3111 and the second controllable switch 3112 in the third distribution unit C are marked as switch C1 and switch C2, respectively, and the first controllable switch 3111 and the second controllable switch 3112 in the fourth distribution unit D are marked as switch D1 and switch D2, respectively.

[0060] During specific operation, when the vehicle power mode is OFF, or the power mode is ON but the vehicle is not in high voltage state, and the entire ring power supply system has no faults, the first controllable switch 3111 and the second controllable switch 3112 in all distribution units 311 are in a normally closed state, and the second power supply 2, i.e., the vehicle battery, supplies power to all loads 5 of the vehicle.

[0061] When the vehicle is in the upper high voltage state and the entire ring power supply system has no faults, the first controllable switches 3111 and the second controllable switches 3112 in all distribution units 311 are in the normally closed state, and the first power supply 1, i.e., the vehicle's power supply device, supplies power to all loads 5 of the vehicle.

[0062] When the vehicle is in the upper high voltage state and the link between the first power distribution unit A and the second power distribution unit B fails, the microcontroller 3113 controls the switch A2 and the switch B1 to be disconnected. At this time, the first power distribution unit A and the load 5 connected thereto are directly powered by the first power supply 1 through the switch A1, the second power distribution unit B and the load 5 connected thereto are powered by the first power supply 1 through the third power distribution unit C, the fourth power distribution unit D and the switch B2 in sequence, the third power distribution unit C and the load 5 connected thereto are directly powered by the first power supply 1 through the switch C1, and the fourth power distribution unit D and the load 5 connected thereto are powered by the first power supply 1 through the third power distribution unit C and the switch D1 in sequence. In this way, even if the link between the first power distribution unit A and the second power distribution unit B fails, each power distribution unit 311 and the load 5 connected thereto can still operate normally.

[0063] When the vehicle is in the upper high voltage state and the link between the third distribution unit C and the fourth distribution unit D fails, the power supply conditions of each distribution unit 311 are similar to the above-mentioned "when the link between the first distribution unit A and the second distribution unit B fails", and will not be elaborated here. Even if the link between the third distribution unit C and the fourth distribution unit D fails, each distribution unit 311 and the load 5 connected thereto can still operate normally.

[0064] When a failure occurs in the first power supply 1 or the link between the first power distribution unit A and the third power distribution unit C, the loads 5 in each power distribution unit 311 are all powered by the second power supply 2 and can still operate normally.

[0065] When a failure occurs in the second power supply 2 or the link between the second power distribution unit B and the fourth power distribution unit D, the loads 5 in each power distribution unit 311 are all powered by the first power supply 1 and can still operate normally.

[0066] Therefore, the ring power supply system described in the present application is composed of a first power supply 1, a second power supply 2, and at least two intelligent distribution modules 31 arranged in parallel between the first power supply 1 and the second power supply 2. The first power supply 1 and the second power supply 2 can supply power to the load 5 from different power supply paths. Even if a power supply and its power supply path fail and cannot continue to supply power to the load 5, the other power supply can still continue to supply power to the load 5 from another power supply path.

[0067] In addition, a first controllable switch 3111, a second controllable switch 3112 and a microcontroller 3113 are provided in the power distribution unit 311. The microcontroller 3113 can collect and determine the fault location on the power supply path and intelligently control the opening and closing of the controllable switch at the fault location to ensure the reliability of power distribution to the load 5, realize uninterrupted power supply to the load 5, and ensure that the load 5 can work normally under various circumstances.

[0068] In some embodiments, the first controllable switch 3111 and the second controllable switch 3112 are both unidirectional MOS switches, and the preset current reverse directions of the two unidirectional MOS switches are opposite.

[0069] Specifically, the forward current direction and reverse current direction of the unidirectional MOS transistor switch are determined. In the present application, the preset reverse current directions of the two unidirectional MOS transistor switches are opposite, and the preset forward current directions are also opposite.

[0070] Exemplarily, if the preset current forward direction of one unidirectional MOS transistor switch is that the current flows from the drain to the source, then the reverse current direction is that the current flows from the source to the drain. Accordingly, since the preset current reverse directions of the two unidirectional MOS transistor switches in the present application are opposite, the preset current reverse direction of the other unidirectional MOS transistor switch is that the current flows from the drain to the source, and the current forward direction is that the current flows from the source to the drain.

[0071] The preset reverse directions of the currents of the two MOS tube switches are opposite, so that when the same power supply is used for power supply, although the currents actually flowing through the two unidirectional MOS tube switches in each distribution unit 311 flow in the same direction, since the preset forward directions of the currents of the two unidirectional MOS tubes are different, when the actual currents flow in the two unidirectional MOS tubes, the current of one unidirectional MOS tube switch is a forward current, and the current of the other unidirectional MOS tube switch is a reverse current. This is beneficial in that, in the actual control process of the ring power supply system, the microcontroller 3113 selects a specific MOS tube switch with a forward current or a reverse current as a target switch (the target switch is one of the two unidirectional MOS tube switches), detects circuit information such as current or voltage on the target switch, and opens or closes the target switch according to the circuit information. In this way, when a fault occurs in or near a distribution unit 311, it is only necessary to disconnect the target switch in the distribution unit 311 to cut off the faulty part. At the same time, the other unidirectional MOS tube switch in the distribution unit 311 is still in a closed state, so it will not affect the other power supply to the load 5 in the distribution unit 311.

[0072] If the preset forward directions of the currents of the two unidirectional MOS tube switches are consistent, on the one hand, it is not conducive to the actual monitoring and control of the microcontroller 3113. On the other hand, the two unidirectional MOS tube switches in a distribution unit 311 may be disconnected at the same time, so that the load 5 connected to the distribution unit 311 cannot be powered by the first power supply 1 or the second power supply 2, resulting in these loads 5 being unable to work normally, there is a risk of loss of control, and affecting vehicle safety.

[0073] In some embodiments, see Figure 4 The power distribution unit 311 also includes a first sampling resistor 3114 and a second sampling resistor 3115, the first sampling resistor 3114 is connected to the first controllable switch 3111, the second sampling resistor 3115 is connected to the second controllable switch 3112, and the first controllable switch 3111 and the second controllable switch 3112 are located between the first sampling resistor 3114 and the second sampling resistor 3115.

[0074] Specifically, the first sampling resistor 3114 is disposed at an end of the first controllable switch 3111 away from the second controllable switch 3112 , and the second sampling resistor 3115 is disposed at an end of the second controllable switch 3112 away from the first controllable switch 3111 .

[0075] The first sampling resistor 3114 is arranged between the first power supply 1 and the first controllable switch 3111, and the current flowing through the first sampling resistor 3114 is the same as the current flowing through the first controllable switch 3111. Since the current flowing through the first controllable switch 3111 is not easy to monitor quantitatively during actual acquisition and monitoring, but the current flowing through the first sampling resistor 3114 is easy to monitor quantitatively (illustratively, the current flowing through the first sampling resistor 3114 can be calculated by quantitatively monitoring the voltage across the first sampling resistor 3114), therefore, the first sampling resistor 3114 is arranged in the present application to facilitate monitoring of the current flowing through the first controllable switch 3111, and the voltage and temperature near the first controllable switch 3111, so as to facilitate the microcontroller 3113 to monitor the fault, so as to accurately and quickly determine the location of the fault, and then quickly cut off the first controllable switch 3111.

[0076] The second sampling resistor 3115 is arranged between the second power supply 2 and the second controllable switch 3112, and the current flowing through the second sampling resistor 3115 is the same as the current flowing through the second controllable switch 3112. Since it is not easy to quantitatively monitor the current flowing through the second controllable switch 3112 during actual collection and monitoring, but it is easy to quantitatively monitor the current flowing through the second sampling resistor 3115 (for example, the current flowing through the second sampling resistor 3115 can be calculated by quantitatively monitoring the voltage across the second sampling resistor 3115), therefore, the second sampling resistor 3115 is arranged in the present application to facilitate monitoring of the current flowing through the second controllable switch 3112, and the voltage and temperature near the second controllable switch 3112, so as to facilitate the microcontroller 3113 to monitor the fault, so as to accurately and quickly determine the location of the fault, and then quickly cut off the second controllable switch 3112.

[0077] In some embodiments, a third sampling resistor 6 and a load controllable switch 4 are connected in series between the first node and the load 5 .

[0078] Exemplarily, the third sampling resistor 6 and the load controllable switch 4 are both electrically connected to the microcontroller 3113. The setting of the third sampling resistor 6 facilitates the monitoring of the current flowing through the load controllable switch 4, and the voltage and temperature near the load controllable switch 4, so as to facilitate the microcontroller 3113 to monitor the fault, so as to accurately and quickly determine the location of the fault, and then quickly cut off the load controllable switch 4.

[0079] In specific implementation, when a branch where a load 5 is located fails, the microcontroller 3113 disconnects the load controllable switch 4 connected to the load 5, and disconnects the power supply to the load 5. At this time, the load 5 cannot continue to work, but the loads 5 in other distribution units and other loads 5 in the distribution unit 311 can still work normally.

[0080] In some embodiments, see Figure 5 The microcontroller 3113 includes a logic processing unit 31131 and a collection control unit 31132; the collection control unit 31132 is connected to the first sampling resistor 3114, the second sampling resistor 3115, the third sampling resistor 6, the first controllable switch 3111, the second controllable switch 3112 and the load controllable switch 4, and is used to collect circuit information of the first sampling resistor 3114, the second sampling resistor 3115 and the third sampling resistor 6, send the circuit information to the logic processing unit 31131, and control the opening and closing of the first controllable switch 3111, the second controllable switch 3112 and the load controllable switch 4; the logic processing unit 31131 is connected to the first power supply 1, the second power supply 2 and the collection control unit 31132, and is used to receive the circuit information, generate a control instruction based on the circuit information, and send the control instruction to the collection control unit 31132.

[0081] Specifically, the acquisition control unit 31132 acquires circuit information of the first sampling resistor 3114, the second sampling resistor 3115 and the third sampling resistor 6, and sends the circuit information to the logic processing unit 31131. The logic processing unit 31131 performs logic judgment after receiving the circuit information, generates a control instruction based on the result of the logic judgment and sends it to the acquisition control unit 31132. The acquisition control unit 31132 controls the opening or closing of the first controllable switch 3111, the second controllable switch 3112 and the load controllable switch 4 based on the control instruction.

[0082] Circuit information includes voltage information, current information, temperature information, etc. When collecting temperature, the temperature collection element 311321 can be set near the controllable switch or sampling resistor to collect the temperature near the controllable switch. The temperature collection element 311321 is connected to the collection control unit 31132 to send the collected temperature information to the collection control unit 31132. When collecting voltage or current, the sampling resistor is connected to the collection control unit 31132, and the collection control unit 31132 directly collects the voltage across the sampling resistor and the current flowing through.

[0083] Exemplarily, after receiving the circuit information, the logic processing unit 31131 performs a logic judgment. If the judgment result shows that the current of the first sampling resistor 3114 is too large, the control instruction "disconnect the first controllable switch 3111 corresponding to the first sampling resistor 3114" is generated based on the judgment structure and sent to the acquisition control unit 31132. After receiving the control instruction "disconnect the first controllable switch 3111 corresponding to the first sampling resistor 3114", the acquisition control unit 31132 disconnects the first controllable switch 3111 based on the control instruction.

[0084] The microcontroller 3113 also includes a power communication unit 31133, which is connected to the first power supply 1, the second power supply 2 and the logic processing unit 31131. The first power supply 1 and the second power supply 2 supply power to the logic processing unit 31131 through the power communication unit 31133.

[0085] Among them, the power communication unit 31133, the logic processing unit 31131 and the acquisition control unit 31132 can all be chips with corresponding functions.

[0086] In the present application, by setting up a microcontroller 3113, power supply information at various locations on the power supply path can be collected, and the fault location on the power supply path can be accurately and quickly determined according to preset rules, and the opening and closing of the controllable switch at the fault location can be intelligently controlled to ensure the reliability of power distribution to the load 5.

[0087] See also Figure 6 and Figure 7 The present application also provides a method for controlling a ring power supply system, comprising:

[0088] Step S100 : obtaining current circuit information of a target controllable switch in each power distribution unit 311 .

[0089] Specifically, it is first necessary to determine that at least one of the first controllable switch 3111 or the second controllable switch 3112 in the distribution unit is a target controllable switch. The step of determining the target controllable switch includes:

[0090] Step S110, obtaining the direction of the current flowing through the first controllable switch 3111 or the second controllable switch 3112 in each power distribution unit 311;

[0091] Step S120: In response to the current direction being the same as a preset current reverse direction of the first controllable switch 3111 or the second controllable switch 3112, determining the first controllable switch 3111 or the second controllable switch 3112 as a target controllable switch, wherein the preset current reverse directions of the first controllable switch 3111 and the second controllable switch 3112 are opposite.

[0092] Specifically, the direction of the current flowing through the first controllable switch 3111 and the second controllable switch 3112 in each distribution unit 311 is first obtained. When the current direction is the same as the preset current reverse direction of the first controllable switch 3111 or the second controllable switch 3112, the first controllable switch 3111 or the second controllable switch 3112 is determined to be the target controllable switch.

[0093] Exemplarily, assuming that the preset forward direction of the current of the first controllable switch 3111 is that the current flows from the drain to the source, then the reverse direction of the current is that the current flows from the source to the drain. Accordingly, since the preset reverse directions of the current of the first controllable switch 3111 and the second controllable switch 3112 are opposite in the present application, the preset reverse direction of the current of the second controllable switch 3112 is that the current flows from the drain to the source, and the forward direction of the current is that the current flows from the source to the drain.

[0094] Assuming that the current flow direction obtained is from the first power supply 1 to the second power supply 2, then, for the first controllable switch 3111, when this current flow direction flows through the first controllable switch 3111, it happens to flow from its drain to its source, so this current flow direction is a forward current for the first controllable switch 3111. Correspondingly, since the currents of the first controllable switch 3111 and the second controllable switch 3112 are in opposite directions, then, for the same current flowing from the first power supply 1 to the second power supply 2, when the first controllable switch 3111 is a forward current, the second controllable switch 3112 is a reverse current. At this time, it is determined that the current direction is the same as the preset current reverse direction of the second controllable switch 3112, and the second controllable switch 3112 is the target controllable switch.

[0095] After the target controllable switch is determined, it is necessary to obtain current circuit information of the target controllable switch. The current circuit information includes voltage information, current information and temperature information. The voltage information includes voltage value and voltage duration, and the current information includes current value and current duration.

[0096] Specifically, when acquiring the current circuit information of the target controllable switch, the temperature, voltage or current information of the target controllable switch can be directly collected by the microcontroller 3113, or the temperature, voltage or current information of the sampling resistor near the target controllable switch can be collected, without specific limitation.

[0097] Step S200: In response to the current circuit information meeting a preset disconnection rule, disconnecting the target controllable switch.

[0098] Specifically, after collecting the current circuit information, it is determined whether the current circuit information meets the preset disconnection rule. If it does, the target controllable switch is disconnected. The preset disconnection rule is a rule for disconnecting the target controllable switch set based on actual experience. When the collected current circuit information meets the preset disconnection rule, it indicates that a fault occurs at or near the target controllable switch, and the target controllable switch needs to be disconnected.

[0099] The preset disconnection rule includes a preset voltage rule, a preset current rule and a preset temperature rule. The preset voltage rule includes that the voltage value is greater than or equal to the preset voltage value, and the voltage duration is greater than or equal to the preset voltage duration. The preset voltage value is a preset voltage excess value, and the preset voltage duration is the duration of the preset voltage excess value. When the voltage value is greater than or equal to the preset voltage value and the voltage duration is greater than or equal to the preset voltage duration, it means that the voltage value near the target controllable switch is too large, an overvoltage situation occurs, and the overvoltage duration is long, and the target controllable switch needs to be disconnected at this time.

[0100] The preset temperature rule includes that the temperature information is greater than or equal to a preset temperature value, and the preset temperature value is a preset maximum temperature value. When the temperature information is greater than or equal to the preset maximum temperature value, it indicates that the temperature near the target controllable switch is too high, and the target controllable switch needs to be disconnected.

[0101] The preset current rule includes that the current value is greater than or equal to the preset current value, and the current duration is greater than or equal to the preset current duration. The preset current value is a preset excessive current value, and the preset current duration is the duration of the preset excessive current value. When the current value is greater than or equal to the preset current value and the current duration is greater than or equal to the preset current duration, it means that the current value near the target controllable switch is too large, and an overcurrent or short circuit occurs, and the duration is long, and the target controllable switch needs to be disconnected.

[0102] When judging whether the current circuit information meets the preset disconnection rule, the following steps can be used for judgment: when the voltage information meets the preset voltage rule, or the current information meets the preset current rule, or the temperature information meets the preset temperature rule, it is determined that the current circuit information meets the preset disconnection rule, and the target controllable switch is disconnected. That is, as long as one of the preset voltage rule, the preset current rule, or the preset temperature rule is satisfied, it is determined that the current circuit information meets the preset disconnection rule, and the target controllable switch needs to be disconnected.

[0103] In the present application, a controllable switch whose current flow direction is the same as the preset reverse current direction is selected as the target controllable switch, and the current circuit information of the target controllable switch is detected, and it is determined whether the current circuit information meets the preset disconnection rule. If it meets the rule, the target controllable switch is disconnected. In this way, when a fault occurs in or near a distribution unit 311, it is only necessary to disconnect the target switch in the distribution unit 311 to disconnect the faulty part. At the same time, the other controllable switch in the distribution unit 311 is still in a closed state, so it will not affect the power supply of another power supply to the load 5 in the distribution unit 311, so that the load 5 can work normally under any circumstances to ensure safety.

[0104] Step S300: In response to the disconnection time of the target controllable switch being consistent with the preset disconnection time, the target controllable switch is closed, and current circuit information of the target controllable switch is continuously collected.

[0105] Step S400: In response to the current circuit information meeting the preset disconnection rule, disconnecting the target controllable switch.

[0106] Specifically, the preset disconnection time is a self-recovery time preset based on actual experience. When the disconnection time of the target controllable switch meets the preset disconnection time, the target controllable switch is closed, and the current circuit information of the target controllable switch is continuously collected. If the current circuit information meets the preset disconnection rule, the target controllable switch is completely disconnected. If the current circuit information does not meet the preset disconnection rule, the disconnection operation is not performed, that is, the target controllable switch is still closed and can still work normally.

[0107] In the present application, after the target controllable switch is closed for the first time, a self-recovery strategy is executed, that is, the target controllable switch is closed again, and the current circuit information is collected again. When the current circuit information collected again still meets the preset disconnection rule, the target controllable switch is completely disconnected.

[0108] When the current circuit information is collected for the first time, the instantaneous high voltage or instantaneous overcurrent caused by environmental fluctuations or component fluctuations will also make the current circuit information meet the preset disconnection rules, and the operation of disconnecting the target controllable switch is performed at this time. However, this type of instantaneous high voltage or instantaneous overcurrent is only temporary, not a real circuit failure. Therefore, the present application implements a self-recovery strategy and collects the current circuit information for the second time. Only when the current circuit information collected for the second time still meets the preset disconnection rules, it proves that a real circuit failure has occurred and the target controllable switch needs to be completely disconnected. If the current circuit information collected for the second time does not meet the preset disconnection rules, it proves that only instantaneous high voltage or instantaneous overcurrent has occurred, and there is no real circuit failure. At this time, there is no need to disconnect the target controllable switch.

[0109] In the present application, by executing a self-recovery strategy, misjudgment of circuit faults caused by instantaneous high voltage or instantaneous overcurrent can be avoided, thereby improving the accuracy of the microcontroller 3113 in judging circuit faults.

[0110] In some embodiments, a load-controllable switch 4 is provided between the load 5 and the first node.

[0111] The method further comprises:

[0112] Step S500, obtaining current load circuit information of each load controllable switch 4 in each power distribution unit 311;

[0113] Step S600: in response to a current load circuit information meeting a preset load disconnection rule, disconnecting the load controllable switch 4 corresponding to the load circuit information;

[0114] Step S700: in response to the disconnection time of the load controllable switch 4 being consistent with the preset disconnection time of the load 5, the load controllable switch 4 is closed, and the current load circuit information of the load controllable switch 4 is continuously collected;

[0115] Step S800: In response to the current load circuit information meeting the preset load disconnection rule, disconnecting the load controllable switch 4.

[0116] Specifically, for the load-controllable switch 4 corresponding to each load 5 in each distribution unit 311, the same control method as the target controllable switch can still be executed to accurately control the load-controllable switch 4 corresponding to each load 5 and ensure the safety of the load 5.

[0117] The current load circuit information includes load voltage information, load current information and load temperature information. The load voltage information includes a load voltage value and a load voltage duration. The load current information includes a load current value and a load current duration.

[0118] The preset load disconnection rule includes a preset load voltage rule, a preset load current rule and a preset load temperature rule. The preset load voltage rule includes that the load voltage value is greater than or equal to the preset load voltage value, and the load voltage duration is greater than or equal to the preset load voltage duration.

[0119] The preset load temperature rule includes that the load temperature information is greater than or equal to a preset load temperature value, and the preset load temperature value is a preset maximum load temperature value.

[0120] The preset load current rule includes that the load current value is greater than or equal to the preset load current value, and the load current duration is greater than or equal to the preset load current duration. The preset load current value is a preset load current excessive value, and the preset load current duration is the duration of the preset load current excessive value.

[0121] When judging whether the current load circuit information complies with the preset load disconnection rule, the judgment can be made according to the following steps: when the load voltage information complies with the preset load voltage rule, or the load current information complies with the preset load current rule, or the load temperature information complies with the preset load temperature rule, it is determined that the current load circuit information complies with the preset load disconnection rule, and the load controllable switch is disconnected.

[0122] The execution steps and principles of the load controllable switch 4 are basically the same as those of the target controllable switch, and are not described in detail here.

[0123] In some embodiments, the preset load voltage value, preset load current value and preset load temperature value corresponding to the load controllable switch 4 are all smaller than the preset voltage value, preset current value and preset temperature value corresponding to the target controllable switch. This ensures that when a fault occurs near the load controllable switch 4, only the load controllable switch 4 will be disconnected, and the target controllable switch will not be disconnected, ensuring that when a fault occurs in the branch corresponding to the load controllable switch 4, the power supply to other loads 5 in the distribution unit 311 where the load controllable switch 4 is located will not be affected.

[0124] In some embodiments, the preset disconnection times corresponding to the target controllable switches in multiple distribution units 311 are different. With such a setting, when the target controllable switches in multiple distribution units 311 are disconnected within the same time period, they execute self-recovery strategies according to different preset disconnection times to ensure that only one target controllable switch executes the self-recovery strategy each time. In this way, the fault location can be accurately determined to avoid multiple target controllable switches executing the self-recovery strategy at the same time, resulting in inaccurate fault location determination.

[0125] Exemplarily, the preset disconnection time corresponding to the target controllable switch in the first power distribution unit A is 3s, the preset disconnection time corresponding to the target controllable switch in the second power distribution unit B is 6s, the preset disconnection time corresponding to the target controllable switch in the third power distribution unit C is 9s, and the preset disconnection time corresponding to the target controllable switch in the fourth power distribution unit D is 12s. Assuming that the target controllable switch in the first power distribution unit A and the target controllable switch in the third power distribution unit C are both disconnected at the same time, then, when executing the self-recovery strategy, since the preset disconnection time corresponding to the target controllable switch in the first power distribution unit A is shorter, the target controllable switch in the first power distribution unit A first executes the self-recovery strategy, and after the execution of the self-recovery strategy is completed, when the disconnection time of the target controllable switch in the third power distribution unit C reaches its corresponding preset disconnection time, the self-recovery strategy of the target controllable switch in the third power distribution unit C is executed again, ensuring that only one target controllable switch executes the self-recovery strategy each time, so that the fault location can be accurately determined.

[0126] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0127] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0128] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for controlling the ring power supply system described in any of the above embodiments is implemented.

[0129] Figure 8 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0130] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0131] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0132] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0133] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0134] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0135] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0136] The electronic device of the above embodiment is used to implement the corresponding method of controlling the ring power supply system in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0137] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments, the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method for controlling a ring power supply system as described in any of the above embodiments.

[0138] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0139] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the method for controlling the ring power supply system as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0140] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides a vehicle, including the ring power supply system, electronic device or computer-readable storage medium described in the above-mentioned embodiments.

[0141] The vehicle provided in this application has the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here.

[0142] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0143] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0144] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0145] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A ring power supply system, characterized in that: include: a first power supply; A second power supply; An intelligent power distribution device is arranged between the first power supply and the second power supply, and the intelligent power distribution device includes at least two intelligent power distribution modules arranged in parallel, each of the intelligent power distribution modules includes at least one power distribution unit, and the power distribution unit is used to connect to at least one load.

2. The ring power supply system according to claim 1, characterized in that: The power distribution unit includes a first controllable switch, a second controllable switch and a microcontroller, wherein a first node is provided between the first controllable switch and the second controllable switch, wherein the first node is used to be connected to the at least one load, and the microcontroller controls the first power supply or the second power supply to supply power to all the loads by controlling the opening and closing of the first controllable switch and the second controllable switch.

3. The ring power supply system according to claim 2, characterized in that: The first controllable switch and the second controllable switch are both unidirectional MOS tube switches, and the preset current reverse directions of the two unidirectional MOS tube switches are opposite.

4. The ring power supply system according to claim 2, characterized in that: The power distribution unit further includes a first sampling resistor and a second sampling resistor, the first sampling resistor is connected to the first controllable switch, the second sampling resistor is connected to the second controllable switch, and the first controllable switch and the second controllable switch are located between the first sampling resistor and the second sampling resistor; And / or, a third sampling resistor and a load controllable switch are connected in series between the first node and the load.

5. The ring power supply system according to claim 4, characterized in that: The microcontroller includes a logic processing unit and an acquisition control unit; The acquisition control unit is connected to the first sampling resistor, the second sampling resistor, the third sampling resistor, the first controllable switch, the second controllable switch and the load controllable switch respectively, and is used to acquire circuit information of the first sampling resistor, the second sampling resistor and the third sampling resistor, send the circuit information to the logic processing unit, and control the opening and closing of the first controllable switch, the second controllable switch and the load controllable switch; The logic processing unit is connected to the first power supply, the second power supply and the acquisition control unit, and is used to receive the circuit information, generate a control instruction based on the circuit information, and send the control instruction to the acquisition control unit.

6. A method for controlling the ring power supply system according to any one of claims 1 to 5, characterized in that: include: Obtaining current circuit information of a target controllable switch in each power distribution unit; In response to the current circuit information meeting a preset disconnection rule, disconnecting the target controllable switch; In response to the disconnection time of the target controllable switch being consistent with the preset disconnection time, closing the target controllable switch and continuing to collect current circuit information of the target controllable switch; In response to the current circuit information meeting the preset disconnection rule, the target controllable switch is disconnected.

7. The method according to claim 6, characterized in that Before acquiring the current circuit information of the target controllable switch in each power distribution unit, the method further includes: Obtaining the direction of current flowing through the first controllable switch or the second controllable switch in each power distribution unit; In response to the current direction being the same as a preset current reverse direction of the first controllable switch or the second controllable switch, the first controllable switch or the second controllable switch is determined to be a target controllable switch, wherein the preset current reverse directions of the first controllable switch and the second controllable switch are opposite.

8. The method according to claim 6, characterized in that A load-controllable switch is provided between the load and the first node; and the method further comprises: Obtaining current load circuit information of each load controllable switch in each power distribution unit; In response to a current load circuit information meeting a preset load disconnection rule, disconnecting a load controllable switch corresponding to the load circuit information; In response to the disconnection time of the load-controllable switch being consistent with the preset load disconnection time, the load-controllable switch is closed, and the current load circuit information of the load-controllable switch is continuously collected; In response to the current load circuit information meeting the preset load disconnection rule, the load controllable switch is disconnected.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 6 to 8 is implemented.

10. A vehicle, characterized in that: The invention comprises the ring power supply system according to any one of claims 1 to 5 or the electronic device according to claim 9.

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