Current control method and system of intelligent distribution box and vehicle

Abstract

The invention discloses a current control method and system of an intelligent distribution box and a vehicle. The intelligent distribution box comprises a bypass power supply channel and a plurality of main power supply channels. The plurality of main power supply channels are respectively connected with a plurality of constant electric devices; the current control method comprises the following steps: respectively acquiring load current values of a plurality of main power supply channels; determining the total load current of the intelligent distribution box according to the plurality of load current values; determining state information of the constant electric equipment according to the total load current and a first preset time period; and after bypass electronic switches of the bypass power supply channels are turned on according to the state information, main electronic switches of the main power supply channels are turned off. According to the current control method provided by the invention, seamless switching between the bypass power supply channel and the main power supply channel is realized through a principle of'switching-on and switching-off 'in the switching process, so that the continuity of constant electric equipment is ensured.

Description

Technical Field

[0001] This invention relates to the field of intelligent connected vehicle technology, and in particular to a current control method, system and vehicle for an intelligent power distribution box. Background Technology

[0002] With the increasing electrification and intelligence of automobiles, the number of electrical devices in vehicles is surging. Traditional fuse and relay distribution boxes are gradually being replaced by smart junction boxes (SJBs) or zone control units (ZCUs) based on semiconductor switches such as high-side switches, low-side switches, or MOSFETs. Smart junction boxes have diagnostic and protection functions such as overcurrent, overvoltage, overtemperature, short circuit, and open circuit, greatly improving the safety, reliability, and intelligence level of the entire vehicle.

[0003] In existing technologies, intelligent power distribution boxes supply power to various electrical devices in the vehicle. For devices requiring constant power (i.e., directly connected to the battery and never powered off) (such as anti-theft systems, keyless entry systems, and engine control units, ECUs), their corresponding power supply channels must remain open even when the vehicle is in sleep mode. This means that the pre-drive chips that provide drive signals to the electronic switches of each constant power channel continue to operate even when the vehicle is in sleep mode. Each pre-drive chip consumes a certain amount of quiescent current. When there are many constant power channels, the quiescent currents of these pre-drive chips accumulate to a considerable value, continuously consuming power from the battery.

[0004] Excessive static current can cause the battery to be depleted too quickly, leading to problems such as the vehicle being unable to start and the need for frequent intelligent charging (such as waking up the high-voltage system to charge the low-voltage battery). This not only reduces the user experience but also causes unnecessary energy loss. Summary of the Invention

[0005] This invention provides a current control method, system, and vehicle for an intelligent power distribution box. By acquiring the total load current of the intelligent power distribution box and determining the status information of the constant power equipment based on the relationship between the total load current and a first preset time period, the method switches the bypass power supply channel and the main power supply channel based on the status information of the constant power equipment. This ensures seamless switching between the bypass power supply channel and the main power supply channel, guarantees the continuity of power supply to the constant power equipment, saves energy for the entire vehicle, and improves energy utilization efficiency.

[0006] According to a first aspect of the present invention, a current control method for an intelligent power distribution box is provided. The intelligent power distribution box includes a bypass power supply channel and multiple main power supply channels; the multiple main power supply channels are respectively connected to multiple normally powered devices; the current control method includes:

[0007] Obtain the load current values ​​of each of the main power supply channels;

[0008] The total load current of the smart distribution box is determined based on multiple load current values.

[0009] The status information of the constant electrical equipment is determined based on the total load current and the first preset time period.

[0010] After turning on the bypass electronic switch of the bypass power supply channel according to the status information, turn off the main electronic switch of each main power supply channel.

[0011] Optionally, determining the status information of the normally powered equipment based on the total load current and a first preset time period includes:

[0012] When the total load current is less than or equal to the first threshold during the first preset time period, the status information of the constant power equipment is determined to be in a silent state.

[0013] When the total load current is greater than the first threshold at any time during the first preset time period, the status information of the constant power equipment is determined to be in working state.

[0014] Optionally, after turning on the bypass electronic switch of the bypass power supply channel according to the status information, turning off the main electronic switch of each of the main power supply channels includes:

[0015] When the status information of the constant power equipment is in the silent state, after turning on the bypass electronic switch of the bypass power supply channel, the main electronic switch of each of the main power supply channels is turned off.

[0016] Optionally, after turning on the bypass electronic switch of the bypass power supply channel according to the status information, and then turning off the main electronic switch of each of the main power supply channels, the method further includes:

[0017] Real-time monitoring of the output current value of the bypass power supply channel;

[0018] When the output current value is greater than or equal to the second threshold, the status information of the constant power device is determined to be in a wake-up state.

[0019] Optionally, after determining that the status information of the constant power device is in a wake-up state when the output current value is greater than or equal to the second threshold, the method further includes:

[0020] After the intelligent power distribution box turns on the main electronic switch of each of the main power supply channels, it turns off the bypass electronic switch of the bypass power supply channel.

[0021] Optionally, before acquiring the load current values ​​of the multiple main power supply channels respectively, the process includes:

[0022] Real-time monitoring of vehicle communication messages;

[0023] If no communication message is detected within the second preset time period, the vehicle is determined to be in a dormant state.

[0024] According to a second aspect of the present invention, a current control system for an intelligent power distribution box is provided. The current control system is used to execute the current control method for the intelligent power distribution box described in any one of the first aspects of the present invention. The current control system includes: a bypass power supply channel, multiple main power supply channels, and multiple constant power devices.

[0025] The main power supply channel and the bypass power supply channel are connected in parallel.

[0026] The first input terminal of the main power supply channel is connected to the output terminal of the battery, the second input terminal of the main power supply channel is connected to the output terminal of the DC-DC converter, and the output terminal of the main power supply channel is connected to the corresponding plurality of the constant power devices respectively;

[0027] The first input terminal of the bypass power supply channel is connected to the output terminal of the battery, the first input terminal of the bypass power supply channel is connected to the output terminal of the DC-DC converter, and the output terminal of the bypass power supply channel is connected to the output terminal of the main power supply channel.

[0028] Optionally, the bypass power supply channel further includes a bypass drive circuit and a bypass electronic switch;

[0029] The drive control terminal of the bypass drive circuit is connected to the control terminal of the bypass electronic switch.

[0030] The bypass electronic switch is used to turn the bypass power supply channel on or off, and the bypass drive circuit is used to provide drive voltage for the bypass electronic switch.

[0031] Optionally, the main power supply channel may also include multiple main drive circuits and multiple main circuit electronic switches;

[0032] The drive control terminal of each of the main drive circuits is connected to the control terminal of the corresponding plurality of main circuit electronic switches;

[0033] The main circuit electronic switch is used to turn the main power supply channel on or off, and the main drive circuit is used to provide drive voltage to the main circuit electronic switch.

[0034] According to a third aspect of the present invention, a vehicle is provided, comprising a current control system for an intelligent power distribution box as described in any one of the second aspects of the present invention.

[0035] This invention discloses a current control method, system, and vehicle for an intelligent power distribution box. The intelligent power distribution box includes a bypass power supply channel and multiple main power supply channels. The multiple main power supply channels are connected to multiple constantly powered devices. The current control method includes: acquiring the load current values ​​of the multiple main power supply channels; determining the total load current of the intelligent power distribution box based on the multiple load current values; determining the status information of the constantly powered devices based on the total load current and a first preset time period; and, after opening the bypass electronic switch of the bypass power supply channel based on the status information, closing the main electronic switches of each main power supply channel. This invention provides a current control method for an intelligent power distribution box. By acquiring the total load current of the intelligent power distribution box and determining the status information of the constantly powered devices based on the relationship between the total load current and the first preset time period, the method switches the bypass power supply channel and the main power supply channel based on the status information of the constantly powered devices. This ensures seamless switching between the bypass power supply channel and the main power supply channel, guarantees the continuity of power supply to the constantly powered devices, saves energy for the entire vehicle, and improves energy utilization efficiency.

[0036] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a flowchart of a current control method for an intelligent power distribution box provided in an embodiment of the present invention;

[0039] Figure 2 This is a structural diagram of a current control system for an intelligent power distribution box provided in an embodiment of the present invention;

[0040] Figure 3 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention;

[0041] Figure 4 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention;

[0042] Figure 5This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention;

[0043] Figure 6 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention;

[0044] Figure 7 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention. Detailed Implementation

[0045] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0047] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0048] Figure 1 This is a flowchart of a current control method for an intelligent power distribution box provided in an embodiment of the present invention. Figure 2 This is a structural diagram of a current control system for an intelligent power distribution box provided in an embodiment of the present invention, for reference. Figure 1-2 This invention provides a current control method for an intelligent power distribution box, applied to an intelligent power distribution box 1. The intelligent power distribution box 1 includes a bypass power supply channel 11 and multiple main power supply channels 12. Figure 2The example shows three main power supply channels 12. The intelligent power distribution box 1 is a device that highly integrates traditional fuse boxes, relay boxes, switching devices, and control chips. The current control method of the intelligent power distribution box includes:

[0049] S101. Obtain the load current values ​​of multiple main power supply channels respectively.

[0050] Specifically, the intelligent power distribution box 1 monitors and acquires the load current value of each main power supply channel 12 in real time. The load current value refers to the current required by each normally powered device 3 on each main power supply channel, such as... Figure 2 As shown, the three load current values ​​are denoted as I1, I2 and I3, respectively.

[0051] S102. Determine the total load current of the smart distribution box based on multiple load current values.

[0052] Specifically, the intelligent power distribution box 1 has multiple main power supply channels 12. In step S101, the load current values ​​(i.e., I1, I2 and I3) of each main power supply channel 12 are detected respectively. The total load current of the intelligent power distribution box 1 can be determined by adding the load current values ​​(I1, I2 and I3), i.e., total load current = I1 + I2 + I3.

[0053] S103. Determine the status information of the constant power equipment based on the total load current and the first preset time period.

[0054] Specifically, in step S102 above, after obtaining the total load current of the smart power distribution box 1, the status information of the constant power device 3 is determined based on the total load current and the first preset time period. The status information of the constant power device 3 includes silent state, working state and wake-up state.

[0055] S104. After opening the bypass electronic switch of the bypass power supply channel according to the status information, close the main electronic switch of each main power supply channel.

[0056] Specifically, after determining the status information of the constant electrical equipment 3 in S103 above, based on the status information (e.g., wake-up state, working state, and silent state), the bypass electronic switch of the bypass power supply channel is first turned on, that is, all power supply channels of the intelligent power distribution box 1 (including the main power supply channel 12 and the bypass power supply channel 11) are kept on at this time. Then, the main electronic switches of each main power supply channel 12 are turned off, that is, only the bypass power supply channel 11 of the intelligent power distribution box 1 is kept on at this time. At this time, the power supply of all constant electrical equipment 3 is undertaken solely by the bypass power supply channel 11. At this time, the intelligent power distribution box 1 itself enters a low power consumption mode to further save the energy consumption of the whole vehicle and improve energy utilization efficiency.

[0057] The current control method provided in this embodiment of the invention obtains the total load current of the intelligent power distribution box, determines the status information of the constant power equipment based on the relationship between the total load current and a first preset time period, and switches the switch of the bypass power supply channel and the switch of the main power supply channel according to the status information of the constant power equipment, thereby ensuring seamless switching between the bypass power supply channel and the main power supply channel, ensuring the continuity of power supply to the constant power equipment, saving the energy of the whole vehicle, and improving energy utilization efficiency.

[0058] Based on the above embodiments, the present invention further refines the determination of the status information of the normally powered equipment according to the total load current and a first preset time period. Figure 3 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention, for reference. Figure 3 The current control method for the intelligent power distribution box provided in this embodiment of the invention includes:

[0059] S201. Obtain the load current values ​​of multiple main power supply channels respectively.

[0060] S202. Determine the total load current of the smart distribution box based on multiple load current values.

[0061] S203. Determine the status information of the normally powered equipment based on the total load current and the first preset time period.

[0062] S2031. When the total load current is less than or equal to the first threshold during the first preset time period, the status information of the normally powered equipment is determined to be in a silent state.

[0063] Specifically, the total load current of the intelligent power distribution box calculated in step S202 is less than or equal to the first threshold (e.g., 50mA) within a first preset time period (e.g., 10 minutes). Then, the status information of all constant electrical devices 3 is determined to be in a silent state. The silent state of constant electrical devices 3 means that the vehicle's electronic control unit stops sending any signals on the bus to achieve minimal energy loss. The first preset time period and the first threshold can be calibrated and adjusted according to the characteristics of the electrical equipment of the specific vehicle model.

[0064] S2032. When the total load current is greater than the first threshold at any moment in the first preset time period, the status information of the constant power equipment is determined to be in working state.

[0065] Specifically, the total load current of the smart distribution box calculated in step S202 is determined to be in working state when the total load current is greater than the first threshold (e.g., 50mA) at any moment within the first preset time period (e.g., 10 minutes). Any moment refers to any instant within the first preset time period (e.g., 10 minutes).

[0066] S204. After opening the bypass electronic switch of the bypass power supply channel according to the status information, close the main electronic switch of each main power supply channel.

[0067] S205. Keep the main power supply channel's main electronic switch in the open state and keep the bypass power supply channel's bypass electronic switch in the closed state.

[0068] Specifically, in step S2032 above, when it is determined that the constant power supply equipment 3 is in working state, no switching is performed, that is, the main electronic switch of the main power supply channel is kept in the open state, and the bypass electronic switch of the bypass power supply channel is kept in the closed state.

[0069] Based on the above embodiments, the present invention further refines the process of turning off the main electronic switches of each main power supply channel after opening the bypass electronic switch of the bypass power supply channel according to the status information. Figure 4 A flowchart of another current control method for a smart distribution box provided in this embodiment of the invention is shown below. Figure 2 and Figure 4 The current control method provided in this embodiment of the invention includes:

[0070] S301. Obtain the load current values ​​of multiple main power supply channels respectively.

[0071] S302. Determine the total load current of the intelligent power distribution box based on multiple load current values.

[0072] S303. Determine the status information of the normally powered equipment based on the total load current and the first preset time period.

[0073] S3031. When the total load current is less than or equal to the first threshold during the first preset time period, the status information of the normally powered equipment is determined to be in a silent state.

[0074] S3032. When the total load current is greater than the first threshold at any moment in the first preset time period, the status information of the constant power equipment is determined to be in working state.

[0075] S304. When the status information of the normally powered equipment is in a silent state, after turning on the bypass electronic switch of the bypass power supply channel, turn off the main electronic switch of each main power supply channel.

[0076] Specifically, when the total load current is less than or equal to the first threshold in step S3031, and the status information of the normally powered equipment is determined to be in a silent state, that is, when all normally powered equipment is in a silent state, the bypass electronic switch of the bypass power supply channel is first turned on, that is, all power supply channels of the intelligent power distribution box 1 (including the main power supply channel 12 and the bypass power supply channel 11) are kept on, and then the main electronic switches of each main power supply channel 12 are turned off, that is, only the bypass power supply channel 11 of the intelligent power distribution box 1 is kept on. At this time, the power supply of all normally powered equipment 3 is undertaken solely by the bypass power supply channel 11. At this time, the intelligent power distribution box 1 itself enters a low power consumption mode to further save the energy consumption of the whole vehicle and improve energy utilization efficiency.

[0077] Based on the above embodiments, the present invention further refines the process of turning off the main electronic switches of each main power supply channel after opening the bypass electronic switch of the bypass power supply channel according to the status information. Figure 5 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention, for reference. Figure 5 The current control method provided in this embodiment of the invention includes:

[0078] S401. Obtain the load current values ​​of multiple main power supply channels respectively.

[0079] S402. Determine the total load current of the smart distribution box based on multiple load current values.

[0080] S403. Determine the status information of the normally powered equipment based on the total load current and the first preset time period.

[0081] S404. After opening the bypass electronic switch of the bypass power supply channel according to the status information, close the main electronic switch of each main power supply channel.

[0082] S405, Real-time monitoring of the output current value of the bypass power supply channel.

[0083] Specifically, in step S404 above, when it is determined that all the normally powered devices are in a silent state, the bypass electronic switch of the bypass power supply channel is first turned on, that is, at this time all power supply channels of the intelligent power distribution box 1 (including the main power supply channel 12 and the bypass power supply channel 11) are kept on, and then the main electronic switch of each main power supply channel 12 is turned off, that is, at this time only the bypass power supply channel 11 of the intelligent power distribution box 1 is kept on. At this time, the power supply of all normally powered devices 3 is undertaken solely by the bypass power supply channel 11. After this, the intelligent power distribution box will monitor the output current value of the bypass power supply channel in real time, that is, the current value flowing in the bypass power supply channel.

[0084] S406. When the output current value is greater than or equal to the second threshold, the status information of the constant power device is determined to be in the wake-up state.

[0085] Specifically, in step S405 above, when the current value of the bypass power supply channel monitored in real time is greater than or equal to the second threshold at a certain moment, for example, 100mA, it indicates that the constant power device is activated or requires a larger current. At this time, the status information of the constant power device is determined to be in the wake-up state.

[0086] Based on the above embodiments, this invention further refines the status information of the normally powered device as being in a wake-up state when the output current value is greater than or equal to a second threshold. Figure 6 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention, for reference. Figure 6 The current control method provided in this embodiment of the invention includes:

[0087] S501: Obtain the load current values ​​of multiple main power supply channels respectively.

[0088] S502. Determine the total load current of the smart distribution box based on multiple load current values.

[0089] S503. Determine the status information of the normally powered equipment based on the total load current and the first preset time period.

[0090] S504. After opening the bypass electronic switch of the bypass power supply channel according to the status information, close the main electronic switch of each main power supply channel.

[0091] S505: Real-time monitoring of the output current value of the bypass power supply channel.

[0092] S506. When the output current value is greater than or equal to the second threshold, the status information of the constant power device is determined to be in the wake-up state.

[0093] S507: After the intelligent power distribution box turns on the main electronic switch of each main power supply channel, it turns off the bypass electronic switch of the bypass power supply channel.

[0094] Specifically, after determining that the normally powered equipment is in the wake-up state in step S506 above, it indicates that a driver has started the vehicle and all equipment needs to work normally. The intelligent power distribution box first turns on the main electronic switch of each main power supply channel, that is, at this time, all power supply channels of the intelligent power distribution box (including main power supply channels and bypass power supply channels) are connected. Then, it turns off the bypass electronic switch of the bypass power supply channel, that is, at this time, each main power supply channel of the intelligent power distribution box is connected. At this time, the power supply of each normally powered equipment is undertaken by the corresponding main power supply channel, and the whole vehicle returns to the normal power supply mode.

[0095] Based on the above embodiments, the present invention further refines the process of obtaining the load current values ​​of multiple main power supply channels separately. Figure 7 This is a flowchart of another current control method for an intelligent power distribution box provided in an embodiment of the present invention, for reference. Figure 7 The current control method provided in this embodiment of the invention includes:

[0096] S601, Real-time monitoring of vehicle communication messages.

[0097] Specifically, when the vehicle is running, the CAN bus is filled with communication messages between various control units (such as engine ECU, body controller, gateway, etc.). These communication messages contain a lot of signal information and are very complex. However, when the vehicle is about to go into sleep mode, these control units will stop sending communication messages in turn, and the smart power distribution box will continuously monitor the vehicle's communication messages.

[0098] S602. If no communication message is detected within the second preset time period, the vehicle is determined to be in a dormant state.

[0099] Specifically, when no communication message is detected within the second preset time period (e.g., 2 minutes), that is, when all control units in the vehicle have stopped sending communication messages, the vehicle is determined to be in a dormant state.

[0100] S603. Obtain the load current values ​​of multiple main power supply channels respectively.

[0101] S604. Determine the total load current of the smart distribution box based on multiple load current values.

[0102] S605. Determine the status information of the normally powered equipment based on the total load current and the first preset time period.

[0103] S606. After opening the bypass electronic switch of the bypass power supply channel according to the status information, close the main electronic switch of each main power supply channel.

[0104] Based on the same inventive concept, embodiments of the present invention also provide a current control system for an intelligent power distribution box. This current control system is used to execute the current control method for the intelligent power distribution box in any of the above embodiments. (Refer to...) Figure 2 The current control system includes: a bypass power supply channel 11, multiple main power supply channels 12 and multiple constant power devices 3;

[0105] The main power supply channel 11 and the bypass power supply channel 12 are connected in parallel;

[0106] The first input terminal of the main power supply channel 11 is connected to the output terminal of the storage battery 3, the second input terminal of the main power supply channel 12 is connected to the output terminal of the DC-DC converter 4, and the output terminal of the main power supply channel 12 is connected to the corresponding multiple constant power devices 3 respectively.

[0107] The first input terminal of the bypass power supply channel 11 is connected to the output terminal of the battery 3, the first input terminal of the bypass power supply channel 11 is connected to the output terminal of the DC-DC converter 4, and the output terminal of the bypass power supply channel 11 is connected to the output terminal of the main power supply channel 12.

[0108] Specifically, the output terminal of the battery 3 is connected to the first input terminal of the bypass power supply channel 11 and the multiple main power supply channels 12 respectively, to supply power to the bypass power supply channel 11 and the multiple main power supply channels 11. The DC-DC converter 4 is used to convert the DC voltage into the working voltage required for the operation of the intelligent power distribution box 1. The output terminal of the DC-DC converter 4 is connected to the second input terminal of the bypass power supply channel 11 and the multiple main power supply channels 12 respectively, to provide the working voltage required for the bypass power supply channel 11 and the multiple main power supply channels 12 to operate.

[0109] The input terminals of each normally powered device 2 are connected to the output terminals of the corresponding main power supply channels 12 to realize the power supply and power cut-off of the normally powered device 3.

[0110] Optional, continue to refer to Figure 2 The bypass power supply channel 11 in the current control system of the intelligent power distribution box provided in this embodiment of the invention also includes a bypass drive circuit 111 and a bypass electronic switch 112.

[0111] The drive control terminal of the bypass drive circuit 111 is connected to the control terminal of the bypass electronic switch 112;

[0112] The bypass electronic switch 112 is used to open or close the bypass power supply channel 111, and the bypass drive circuit 11 is used to provide drive voltage for the bypass electronic switch 112.

[0113] Specifically, the drive control terminal of the bypass drive circuit 111 is connected to the control terminal of the bypass electronic switch 112 to realize the closing and opening of the bypass electronic switch 112. The bypass drive circuit 11 is used to provide drive voltage for the bypass electronic switch 112. The closing and opening of the bypass electronic switch 112 controls the conduction and disconnection of the bypass power supply channel 11.

[0114] Optional, continue to refer to Figure 2 The main power supply channel 12 also includes multiple main drive circuits 121 and multiple main circuit electronic switches 122;

[0115] Each main drive circuit 121 has its drive control terminal connected to the control terminal of a corresponding set of main electronic switches 122. The main electronic switches 122 are used to turn the main power supply channel 12 on or off, and the main drive circuit 121 is used to provide drive voltage to the main electronic switches 122.

[0116] Specifically, the drive control terminal of the main drive circuit 121 is connected to the control terminal of the main electronic switch 122 to realize the closing and opening of the main electronic switch 122. The main drive circuit 121 is used to provide drive voltage to the main electronic switch 122. The closing and opening of the main electronic switch 122 controls the conduction and disconnection of the main power supply channel 12.

[0117] Based on the same inventive concept, embodiments of the present invention also provide a vehicle including a current control system for the intelligent power distribution box in any of the above embodiments.

[0118] The vehicle provided in this embodiment of the invention can achieve the same technical effect as the current control system of the intelligent power distribution box provided in the above-described embodiments of the invention, and will not be described again here.

[0119] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A current control method for an intelligent power distribution box, characterized in that, The intelligent power distribution box includes a bypass power supply channel and multiple main power supply channels; The multiple main power supply channels are respectively connected to multiple normally powered devices; Current control methods include: Obtain the load current values ​​of each of the main power supply channels; The total load current of the smart power distribution box is determined based on multiple load current values. The status information of the constant electrical equipment is determined based on the total load current and the first preset time period. After turning on the bypass electronic switch of the bypass power supply channel according to the status information, turn off the main electronic switch of each main power supply channel.

2. The current control method for the intelligent power distribution box according to claim 1, characterized in that, The step of determining the status information of the constant electrical equipment based on the total load current and the first preset time period includes: When the total load current is less than or equal to the first threshold during the first preset time period, the status information of the constant power equipment is determined to be in a silent state. When the total load current is greater than the first threshold at any time during the first preset time period, the status information of the constant power equipment is determined to be in working state.

3. The current control method for the intelligent power distribution box according to claim 2, characterized in that, After turning on the bypass electronic switch of the bypass power supply channel according to the status information, turning off the main electronic switch of each of the main power supply channels includes: When the status information of the constant power equipment is in the silent state, after turning on the bypass electronic switch of the bypass power supply channel, the main electronic switch of each of the main power supply channels is turned off.

4. The current control method for the intelligent power distribution box according to claim 1, characterized in that, After turning on the bypass electronic switch of the bypass power supply channel according to the status information, and after turning off the main electronic switch of each of the main power supply channels, the method further includes: Real-time monitoring of the output current value of the bypass power supply channel; When the output current value is greater than or equal to the second threshold, the status information of the constant power device is determined to be in a wake-up state.

5. The current control method for the intelligent power distribution box according to claim 4, characterized in that, After determining that the status information of the constant power device is in a wake-up state when the output current value is greater than or equal to the second threshold, the method further includes: After the intelligent power distribution box turns on the main electronic switch of each of the main power supply channels, it turns off the bypass electronic switch of the bypass power supply channel.

6. The current control method for the intelligent power distribution box according to claim 1, characterized in that, Before acquiring the load current values ​​of the multiple main power supply channels respectively; including: Real-time monitoring of vehicle communication messages; If no communication message is detected within the second preset time period, the vehicle is determined to be in a dormant state.

7. A current control system for an intelligent power distribution box, characterized in that, The current control system is used to execute the current control method of the intelligent power distribution box according to any one of claims 1 to 6. The current control system includes: a bypass power supply channel, multiple main power supply channels, and multiple constant power devices. The main power supply channel and the bypass power supply channel are connected in parallel. The first input terminal of the main power supply channel is connected to the output terminal of the battery, the second input terminal of the main power supply channel is connected to the output terminal of the DC-DC converter, and the output terminal of the main power supply channel is connected to the corresponding plurality of the constant power devices respectively; The first input terminal of the bypass power supply channel is connected to the output terminal of the battery, the first input terminal of the bypass power supply channel is connected to the output terminal of the DC-DC converter, and the output terminal of the bypass power supply channel is connected to the output terminal of the main power supply channel.

8. The current control system of the intelligent power distribution box according to claim 7, characterized in that, The bypass power supply channel also includes a bypass drive circuit and a bypass electronic switch; The drive control terminal of the bypass drive circuit is connected to the control terminal of the bypass electronic switch. The bypass electronic switch is used to turn the bypass power supply channel on or off, and the bypass drive circuit is used to provide drive voltage for the bypass electronic switch.

9. The current control system of the intelligent power distribution box according to claim 7, characterized in that, The main power supply channel also includes multiple main drive circuits and multiple main circuit electronic switches; The drive control terminal of each of the main drive circuits is connected to the control terminal of the corresponding plurality of main circuit electronic switches; The main circuit electronic switch is used to turn the main power supply channel on or off, and the main drive circuit is used to provide drive voltage to the main circuit electronic switch.

10. A vehicle, characterized in that, The current control system includes the intelligent power distribution box according to any one of claims 7 to 9.

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