Automobile domain controller and control method thereof

Abstract

The invention relates to an automobile domain controller and a control method thereof. The automobile domain controller comprises a voltage conversion module, a power supply network and a control module, the voltage conversion module comprises a first conversion unit and a second conversion unit; the first conversion unit and the second conversion unit are used for converting a first voltage output by an external power supply into a second voltage; the first conversion unit charges the power supply network by using the second voltage; the control module is used for controlling the second conversion unit to be turned on and the first conversion unit to be turned off when the voltage value of the power network meets a first voltage threshold; the second conversion unit is used for supplying power to the power network; the automotive domain controller is used for supplying power to the first load according to the first voltage and supplying power to the second load according to the second voltage through the power supply network. According to the invention, the second voltage is adopted to supply power to the second load, and the first voltage is adopted to supply power to the first load, so that power supply to the loads with two voltage requirements can be completed by only adopting one external power supply.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric vehicles, and in particular to an automobile domain controller and a control method thereof. Background Art

[0002] With the rapid development of electric vehicles, the number of automotive electrical appliances has increased rapidly, and the power of electrical appliances has also gradually increased. Therefore, in order to ensure the power required for the normal operation of electrical appliances, the power supply current needs to be continuously increased. Under the premise of the original 12V power supply, as the power supply current increases, the wiring harness of the whole vehicle continues to thicken, resulting in problems such as increased vehicle weight and difficulty in wiring harness layout.

[0003] In order to solve the above problems, the related technology increases the voltage of the power supply to 48V, but the car still retains electrical appliances with a voltage requirement of 12V. Therefore, how to ensure the power supply of two electrical appliances with power requirements when there is only one battery in the whole vehicle is a problem that needs to be solved urgently. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an automobile domain controller and a control method thereof.

[0005] The present disclosure provides an automotive domain controller, including: a voltage conversion module, a power network and a control module; the voltage conversion module includes a first conversion unit and a second conversion unit, the first conversion unit and the second conversion unit are both electrically connected to an external power supply, and the first conversion unit and the second conversion unit are used to convert a first voltage output by the external power supply into a second voltage; the operating power of the first conversion unit is less than the operating power of the second conversion unit; the first conversion unit uses the second voltage to charge the power network; the control module is used to control the second conversion unit to turn on and the first conversion unit to turn off according to the voltage value of the power network meeting the first voltage threshold; the second conversion unit is used to power the power network. Among them, the automotive domain controller is used to power a first load according to a first voltage, and to power a second load according to a second voltage through the power network; the first load is a load driven based on the first voltage; the second load is a load driven based on the second voltage.

[0006] Optionally, the second load includes a second voltage controller and a second voltage power load; the vehicle domain controller also includes: a first intelligent power distribution module, a first drive module and a fault protection module; the first intelligent power distribution module is electrically connected to the power supply network, and the first intelligent power distribution module is used to use the second voltage to power the second voltage controller; the first drive module is electrically connected to the power supply network, and the first drive module is used to drive the second voltage power load with the second voltage; the fault protection module is connected between the power supply network and the first intelligent power distribution module and the first drive module, and the control end of the fault protection module is electrically connected to the control module; the control module is used to control the fault protection module to disconnect the second voltage controller and the second voltage power load from the power supply network according to a fault in the second voltage controller and / or the second voltage power load.

[0007] Optionally, the automotive domain controller also includes a switching module and a first intelligent power distribution module; the switching module is electrically connected to the first conversion unit and the second conversion unit, respectively; the first conversion unit is electrically connected to the first intelligent power distribution module, and the second conversion unit is electrically connected to the first intelligent power distribution module through a power supply network; the first intelligent power distribution module is electrically connected to the second load; wherein the first conversion unit is used to adopt a first current to power the first intelligent power distribution module through a power supply network; the switching module is used to switch the second conversion unit to adopt a second current based on the current consumption value of the first intelligent power distribution module being greater than the current value of the first current, and power the first intelligent power distribution module through the power supply network, and the current value of the second current is greater than the current value of the first current; the first intelligent power distribution module is used to adopt a second voltage to power the second load.

[0008] Optionally, the automotive domain controller also includes a power module; the power module is connected between the power network and the control module; the power network is used to charge the power module; and the power module is used to supply power to the control module.

[0009] The present disclosure also provides a control method for an automobile domain controller, which is applied to any of the above-mentioned automobile domain controllers; the automobile domain controller also includes a power module; the power network is electrically connected to the control module through the power module; the power network is used to charge the power module; the control method includes: based on the power supply voltage of the power module reaching a second voltage threshold, monitoring the pre-charge voltage of the power network; based on the pre-charge voltage reaching a first voltage threshold, controlling the second conversion unit to turn on; based on the second conversion unit being turned on, controlling the first conversion unit to turn off.

[0010] Optionally, the vehicle domain controller further includes a first intelligent power distribution module and a second intelligent power distribution module; the first intelligent power distribution module is used to use the second voltage to supply power to the second load, and the second intelligent power distribution module is used to use the first voltage to supply power to the first load. The control method further includes: obtaining a sleep instruction of the vehicle domain controller; based on the sleep instruction, obtaining a first operating current of the first load and a second operating current of the second load; based on the first operating current and the second operating current being less than an operating current threshold, sending a first mode switching instruction to the first intelligent power distribution module and the second intelligent power distribution module, and sending an on instruction to the first conversion unit, and sending a off instruction to the second conversion unit; wherein the first intelligent power distribution module and the second intelligent power distribution module are both used to switch to a low power consumption mode according to the first mode switching instruction.

[0011] Optionally, the vehicle domain controller also includes a first drive module and a second drive module; the first drive module is used to drive the second load with a second voltage, and the second drive module is used to drive the first load with a first voltage; after obtaining the first operating current of the first load and the second operating current of the second load based on the sleep instruction, the control method also includes: based on the first operating current and the second operating current being less than the operating current threshold, sending a shutdown signal to the first drive module and the second drive module.

[0012] Optionally, the vehicle domain controller also includes a first intelligent power distribution module and a first drive module; the first intelligent power distribution module is used to use the second voltage to power the second load, and the first drive module is used to drive the second load with the second voltage; the control method also includes: obtaining overcurrent fault information of the second load; based on the overcurrent fault information, controlling the fault protection module of the vehicle domain controller to cut off the connection between the first intelligent power distribution module and the first drive module and the power supply network.

[0013] Optionally, obtaining overcurrent fault information of the second load includes: obtaining a second operating current of the second load; and determining the overcurrent fault information of the second load based on the second operating current being greater than a current detection threshold.

[0014] The present disclosure also provides a control method for an automobile domain controller, which is applied to any of the above-mentioned automobile domain controllers. The automobile domain controller also includes a switching module, which is electrically connected to the first conversion unit and the second conversion unit respectively; the control method includes: obtaining fault information output by the first conversion unit; wherein the fault information is generated by the first conversion unit when the output current is abnormal; sending an opening instruction to the second conversion unit and sending a closing instruction to the first conversion unit.

[0015] The present disclosure provides an automobile domain controller and a control method thereof, wherein the automobile domain controller includes a voltage conversion module, a power network and a control module. The voltage conversion module includes a first conversion unit and a second conversion unit, wherein the first voltage provided by an external power supply is converted into a second voltage by operating the first conversion unit with a smaller power, and the power network is charged by the second voltage. When the voltage value stored in the power network meets the operation requirements of the control module, the control module is turned on and the voltage value of the power network is detected. When the control module determines that the voltage stored in the power network meets the first voltage threshold, the power network completes the pre-charging process, the control module controls the second conversion unit to be turned on, the first conversion unit is turned off, and the second conversion unit converts the first voltage provided by the external power supply into the second power supply, thereby realizing that the power supply network continues to be powered by the second conversion unit, and the power network can power the second load according to the received second voltage. In addition, the automobile domain controller provided by the present disclosure can also directly output the first voltage provided by the external power supply to the first load, thereby realizing that the automobile domain controller can directly provide the first voltage to the first load while converting the first voltage into the second voltage to provide to the second load, thereby ensuring that the vehicle can complete the power supply of loads with two voltage requirements using only one external power supply. Since the operating power of the second conversion unit is relatively large, directly using the second conversion unit to power the power network will cause damage to the power network. The present invention first uses the first conversion unit with a smaller operating power to pre-charge the power network. After the pre-charging is completed, the vehicle domain controller uses the second conversion unit to power the power network, thereby ensuring the safe use of the vehicle domain controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of an automobile domain controller provided in an embodiment of the present disclosure.

[0018] Figure 2 A schematic diagram of the structure of a preferred automobile domain controller provided in an embodiment of the present disclosure.

[0019] Figure 3 A schematic flow chart of a control method for an automobile domain controller provided in an embodiment of the present disclosure.

[0020] Figure 4 A flowchart of another method for controlling a vehicle domain controller provided by an embodiment of the present disclosure.

[0021] Figure 5 A flowchart of another method for controlling a vehicle domain controller provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1 A schematic diagram of the structure of a vehicle domain controller provided by an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the automobile domain controller 100 includes: a voltage conversion module, a power supply network 200 and a control module 300 .

[0025] The voltage conversion module includes a first conversion unit 110 and a second conversion unit 120, both of which are electrically connected to the external power supply 400, and are used to convert the first voltage output by the external power supply 400 into a second voltage, and the operating power of the first conversion unit 110 is less than the operating power of the second conversion unit 120. The first conversion unit 110 uses the second voltage to charge the power network 200; the control module 300 is used to control the second conversion unit 120 to turn on and the first conversion unit 110 to turn off according to the voltage value of the power network 200 meeting the first voltage threshold; the second conversion unit 120 is used to supply power to the power network 200; wherein the automotive domain controller 100 is used to supply power to the first load 510 according to the first voltage, and to supply power to the second load 520 according to the second voltage through the power network 200; the first load 510 is a load driven based on the first voltage; the second load 520 is a load driven based on the second voltage.

[0026] Specifically, the first conversion unit 110 and the second conversion unit 120 are both electrically connected to the external power supply 400, and the first conversion unit 110 and the second conversion unit 120 are also electrically connected to the power supply network 200. The first conversion unit 110 and the second conversion unit 120 are both used to convert the first voltage provided by the external power supply 400 into a second voltage, and provide the converted second voltage to the power supply network 200. The control end of the first conversion unit 110 and the control end of the second conversion unit 120 are both electrically connected to the control module 300, and the control module 300 is also electrically connected to the power supply network 200, and the power supply network 200 is used to supply power to the control module 300.

[0027] In the process of charging the power network 200 by the first conversion unit 110, the stored voltage of the power network 200 gradually increases, and the power network 200 is also supplying power to the control module 300. When the voltage value of the power network 200 meets the power demand of the control module 300, the control module 300 is turned on and detects the voltage value of the power network 200. When the voltage value of the power network 200 reaches the first voltage threshold, the control module 300 controls the second conversion unit 120 to be turned on, and then turns off the first conversion unit 110 after the second conversion unit 120 is turned on, thereby the vehicle domain controller 100 completes the pre-charging process of the power network 200. Since the second conversion unit 120 is used to perform voltage conversion when the vehicle domain controller is working normally, the operating power of the second conversion unit 120 is relatively large, and directly using the second conversion unit 120 to supply power to the power network 200 is likely to cause damage to the power network 200. Therefore, the present disclosure first uses the first conversion unit 110 with lower operating power to pre-charge the power network 200. After the pre-charging is completed, the control module 300 controls the second conversion unit 120 to turn on and the first conversion unit 110 to turn off, so that the vehicle domain controller 100 uses the second conversion unit 120 to supply power to the power network, thereby ensuring the safe use of the vehicle domain controller 100.

[0028] In addition, the automobile domain controller 100 provided by the present disclosure converts the first voltage provided by the external power supply 400 into a second voltage to power the power supply network 200 through the second conversion unit 120, and the power supply network 200 uses the second voltage to power the second load 520. The automobile domain controller 100 can also directly output the first voltage provided by the external power supply 400 to the first load 510, so that the automobile domain controller 100 can directly provide the first voltage to the first load 510 while providing the second voltage to the second load 520, thereby ensuring that the vehicle can complete the power supply of loads with two voltage requirements using only one external power supply 400.

[0029] In some embodiments, the second load includes a second voltage controller and a second voltage power load; the vehicle domain controller also includes: a first intelligent power distribution module, a first drive module and a fault protection module.

[0030] The first intelligent power distribution module is electrically connected to the power supply network, and the first intelligent power distribution module is used to use the second voltage to power the second voltage controller; the first drive module is electrically connected to the power supply network, and the first drive module is used to use the second voltage to drive the second voltage power load; the fault protection module is connected between the power supply network and the first intelligent power distribution module and the first drive module, and the control end of the fault protection module is electrically connected to the control module; the control module is used to control the fault protection module to disconnect the second voltage controller and the second voltage power load from the power supply network according to the failure of the second voltage controller and / or the second voltage power load.

[0031] Specifically, the first intelligent power distribution module and the first drive module both have an overcurrent protection function, thereby preventing the second voltage controller and the second voltage power load from being damaged when an overcurrent fault occurs. During the operation of the automotive domain controller, the first intelligent power distribution module will cut off the connection between the power supply network and the second voltage controller according to the overcurrent fault of the second voltage controller. The first drive module will cut off the connection between the power supply network and the second voltage power load according to the overcurrent fault of the second voltage power load. When the first intelligent power distribution module and the first drive module fail and cannot provide overcurrent protection, the control module will control the fault protection module to start working according to the overcurrent fault situation. When any one of the second voltage controller and the second voltage power load has an overcurrent fault, the control module controls the fault protection module to cut off the connection between the second voltage controller and the second voltage power load and the power supply network, thereby preventing other components in the automotive domain controller from being damaged due to the overcurrent fault. Moreover, after the fault protection module cuts off the connection between the second voltage controller and the second voltage power load and the power supply network, the second conversion unit can continue to work normally and supply power to the power supply network. Therefore, the power supply of the power supply network to the control module is not interrupted, and the control module can also work normally. The control module can send overcurrent fault information to the terminal according to the occurrence of overcurrent fault, so that the vehicle user can accurately know the cause of the fault.

[0032] In some embodiments, the automotive domain controller also includes a switching module and a first intelligent power distribution module; the switching module is electrically connected to the first conversion unit and the second conversion unit respectively; the first conversion unit is electrically connected to the first intelligent power distribution module, and the second conversion unit is electrically connected to the first intelligent power distribution module through a power supply network; the first intelligent power distribution module is electrically connected to the second load; wherein the first conversion unit is used to adopt a first current to power the first intelligent power distribution module through a power supply network; the switching module is used to switch the second conversion unit to adopt a second current based on the current consumption value of the first intelligent power distribution module being greater than the current value of the first current, and to power the first intelligent power distribution module through the power supply network, and the current value of the second current is greater than the current value of the first current; the first intelligent power distribution module is used to adopt a second voltage to power the second load.

[0033] Specifically, the second load is a second voltage controller. When the second voltage controller and the vehicle domain controller are both in a dormant state, the vehicle domain controller converts the first voltage provided by the external power supply into a second voltage through the first conversion unit, and uses the second voltage to continuously power the power supply network. Since the operating power of the first conversion unit is relatively small, the first conversion unit can use a first current with a smaller current value to power the power supply network, so that the power supply network also uses a first current with a smaller current value to power the first intelligent power distribution module. When the second voltage controller is awakened from the dormant state before the vehicle domain controller, since the power supply current required for the operation of the second voltage controller is relatively large, the first intelligent power distribution module is still powered by the first conversion unit using the first current through the power supply network, so that the current consumption value of the first intelligent power distribution module is greater than the current value of the first current, and the voltage stored in the power supply network is also reduced due to excessive current consumption. At this time, the switching module determines that the first conversion unit is used to provide the first current to the first intelligent power distribution module according to the current consumption value of the first intelligent power distribution module being greater than the current value of the first current, and cannot meet the normal working requirements of the first intelligent power distribution module. Then the switching module turns on the second conversion unit and turns off the first conversion unit. The second conversion unit uses the second current to power the power network, so that the power supply of the power network returns to normal. At this time, the power network uses the second current to power the first intelligent power distribution module, and the first intelligent power distribution module also uses the second current with a larger current value to power the second voltage controller, so that the current provided by the first intelligent power distribution module can meet the consumption requirements of the second voltage controller, and the vehicle domain controller is also awakened. Therefore, when the second voltage controller is awakened before the vehicle domain controller, the voltage of the power network is consumed due to the insufficient current supply capacity of the first conversion unit, and the control module cannot work normally due to insufficient voltage, the switching module can directly turn on the second conversion unit and turn off the first conversion unit, thereby meeting the power supply requirements of the power network, so that the control module and the first intelligent power distribution module can work normally.

[0034] In some embodiments, the automotive domain controller also includes a power module; the power module is connected between the power network and the control module; the power network is used to charge the power module; and the power module is used to supply power to the control module.

[0035] Specifically, during the process of the first conversion unit precharging the power network, the power network continues to charge the power module, and when the voltage value of the power module meets the second voltage threshold, the control module starts to monitor the precharge voltage of the power network, and when the precharge voltage continues to increase to meet the first voltage threshold, it is considered that the power network has completed precharging, and the control module controls the second conversion unit to turn on and the first conversion unit to turn off. The power module is charged by the power network and stores a certain amount of electrical energy. Therefore, when there is a power supply problem in the power network, due to the existence of the power module, the control module will not stop working directly, but can continue to work for a period of time before the power of the power module is completely consumed, so that the control module can send fault information to the terminal during this period to prompt the vehicle user that a fault has occurred.

[0036] Figure 2 A schematic diagram of a preferred automotive domain controller provided by an embodiment of the present disclosure is shown in FIG. Figure 2 As shown, the automobile domain controller 100 includes: a first conversion unit 110, a switching module 610, a second conversion unit 120, a power network 200, a power module 210, a control module 300, a fault protection module 620, a first intelligent power distribution module 630, a first drive module 640, a second intelligent power distribution module 650 and a second drive module 660.

[0037] The first conversion unit 110 and the second conversion unit 120 are both electrically connected to the external power supply 400, and the first conversion unit 110 and the second conversion unit 120 are also electrically connected to the power supply network 200. The control end of the first conversion unit 110 and the control end of the second conversion unit 120 are both electrically connected to the control module 300. The power supply network 200 is electrically connected to the control module 300 through the power supply module 210. The control module 300 is also electrically connected to the fault protection module 620. The switching module 610 is electrically connected to the first conversion unit 110 and the second conversion unit 120 respectively. The power supply network 200 is electrically connected to the control module 300 through the power supply module 210. The control module 300 is also electrically connected to the fault protection module 620. It is electrically connected to the first intelligent power distribution module 630, the power supply network 200 is electrically connected to the first intelligent power distribution module 620 and the first drive module 640 through the fault protection module 620, the external power supply 400 is also electrically connected to the second intelligent power distribution module 650 and the second drive module 660, the first intelligent power distribution module 630 is electrically connected to the second voltage controller 521, the first drive module 640 is electrically connected to the second voltage power load 522, the second intelligent power distribution module 650 is electrically connected to the first voltage controller 511, and the second drive module 660 is electrically connected to the first voltage power load 512.

[0038] Specifically, in the process of charging the power network 200 by the first conversion unit 110, the stored voltage of the power network 200 gradually increases, and the power network 200 is also charging the power module 210. The power module 210 is used to supply power to the control module 300. When the voltage value of the power module 210 reaches the second voltage threshold, the power demand of the control module 300 is met, and the control module 300 starts to monitor the pre-charge voltage of the power network 200. When the pre-charge voltage meets the first voltage threshold, the control module 300 controls the second conversion unit 120 to turn on, and then turns off the first conversion unit 110 after the second conversion unit 120 is turned on, thereby the automotive domain controller 100 completes the pre-charging process of the power network 200. The present disclosure first uses the first conversion unit 110 with a smaller operating power to pre-charge the power network 200. After the pre-charging is completed, the control module 300 controls the second conversion unit 120 to turn on and the first conversion unit 110 to turn off, so that the automotive domain controller 100 uses the second conversion unit 120 to supply power to the power network, thereby ensuring the safety of the automotive domain controller 100. Furthermore, the automobile domain controller 100 provided by the present disclosure converts the first voltage provided by the external power supply 400 into the second voltage to power the power supply network 200 through the second conversion unit 120, the power supply network 200 uses the second voltage to power the second voltage controller 521 through the first intelligent power distribution module 630, and the power supply network 200 uses the second voltage to power the second voltage load 522 through the first drive module 640. At the same time, the automobile domain controller 100 directly provides the first voltage provided by the external power supply 400 to the first voltage controller 511 through the second intelligent power distribution module 650, and provides the first voltage to the first voltage load 512 through the second drive module 660, thereby ensuring that the vehicle can complete the power supply of loads with two voltage requirements using only one external power supply 400.

[0039] During the operation of the automobile domain controller 100, the first intelligent power distribution module 630 will cut off the connection between the power network 200 and the second voltage controller 521 according to the occurrence of an overcurrent fault in the second voltage controller 521. The first driving module 640 will cut off the connection between the power network 200 and the second voltage power load 522 according to the occurrence of an overcurrent fault in the second voltage power load 522. When the first intelligent power distribution module 630 and the first driving module 640 fail and cannot provide overcurrent protection, the control module 300 will control the fault protection module 620 to start working according to the overcurrent fault situation. When any one of the second voltage controller 521 and the second voltage power load 522 has an overcurrent fault, the control module 300 controls the fault protection module 620 to cut off the connection between the second voltage controller 521 and the second voltage power load 522 and the power network 200, thereby avoiding damage to other components in the automobile domain controller 100 due to the overcurrent fault. Moreover, after the fault protection module 620 cuts off the connection between the second voltage controller 521 and the second voltage power load 522 and the power supply network 200, the second conversion unit 120 can still continue to operate normally and supply power to the power supply network 200. Therefore, the power supply from the power supply network 200 to the control module 300 through the power module 210 is not interrupted, and the control module 300 can also operate normally. The control module 300 can send overcurrent fault information to the terminal according to the occurrence of an overcurrent fault, so that the vehicle user can accurately know the cause of the fault.

[0040] When the second voltage controller 521 and the automobile domain controller 100 are both in a dormant state, and the second voltage controller 521 is awakened from the dormant state before the automobile domain controller 100, since the power supply current required for the operation of the second voltage controller 521 is relatively large, and the first intelligent power distribution module 630 is still powered by the first conversion unit 110 through the power network 200 using the first current, at this time, the switching module 610 turns on the second conversion unit 120 and turns off the first conversion unit 110 according to the current consumption value of the first intelligent power distribution module 630 being greater than the current value of the first current, and the second conversion unit 120 uses the second current to power the power network 200, so that the power supply of the power network 200 returns to normal. At this time, the power network 200 uses the second current to power the first intelligent power distribution module 630, and the first intelligent power distribution module 630 also uses the second current with a larger current value to power the second voltage controller 521, so that the current provided by the first intelligent power distribution module 630 can meet the consumption requirements of the second voltage controller 521, and the automobile domain controller 100 is also awakened. Therefore, in the present disclosure, when the second voltage controller 521 is awakened before the vehicle domain controller 100, due to the insufficient current supply capability of the first conversion unit 110, the voltage of the power supply network 200 is consumed, and the control module 300 cannot work normally due to insufficient power supply voltage. In this case, the switching module 610 can directly turn on the second conversion unit 120 and turn off the first conversion unit 110, thereby meeting the power supply demand for the power supply network 200, so that the control module 300 and the first intelligent power distribution module 630 can resume normal operation.

[0041] Figure 3 The present invention provides a flow chart of a control method of a vehicle domain controller, which is applied to the vehicle domain controller described in any of the above embodiments; the vehicle domain controller also includes a power module; the power network is electrically connected to the control module through the power module; the power network is used to charge the power module. Figure 3 As shown, the control method includes: S710-S730.

[0042] S710: Based on the supply voltage of the power module reaching a second voltage threshold, monitor the pre-charge voltage of the power network.

[0043] Specifically, in the process of the first conversion unit charging the power network, the stored voltage of the power network gradually increases. At the same time, the power network is also charging the power module, and the power module is used to power the control module. When the power supply voltage of the power module reaches the second voltage threshold, the power demand of the control module is met, and the control module begins to monitor the pre-charge voltage of the power network.

[0044] S720 : Based on the pre-charge voltage reaching the first voltage threshold, control the second conversion unit to turn on.

[0045] Specifically, when the pre-charge voltage of the power supply network reaches the first voltage threshold, the control module considers that the power supply network has completed pre-charging, and the control module controls the second conversion unit to turn on, and the second conversion unit continues to provide the second voltage to the power supply network. Since the operating power of the second conversion unit is large, using the second conversion unit as the power supply network can meet the power supply needs of the second load.

[0046] S730: Based on the second conversion unit being turned on, control the first conversion unit to be turned off.

[0047] Specifically, after determining that the second conversion unit is turned on, the power supply network is already in a normal working state, and at this time the control module controls the first conversion unit to be turned off.

[0048] Since the second conversion unit is used to perform voltage conversion when the vehicle domain controller is working normally, the operating power of the second conversion unit is relatively large. Directly using the second conversion unit to supply power to the power network is likely to cause damage to the power network. Therefore, the present disclosure first uses the first conversion unit with a relatively small operating power to pre-charge the power network. After the pre-charging is completed, the control module controls the second conversion unit to turn on, so that the power network is in a normal working state, and then turns off the first conversion unit, so that the vehicle domain controller converts the first voltage to the second voltage through the second conversion unit to supply power to the power network. The present disclosure ensures that the power network will not be damaged while ensuring the normal operation of the second load using the second voltage, thereby ensuring the safe use of the vehicle domain controller.

[0049] In some embodiments, Figure 4 A flow chart of another control method of a vehicle domain controller provided by an embodiment of the present disclosure, wherein the vehicle domain controller further comprises a first intelligent power distribution module and a second intelligent power distribution module; the first intelligent power distribution module is used to supply power to the second load using the second voltage, and the second intelligent power distribution module is used to supply power to the first load using the first voltage. Figure 4 As shown, the control method also includes: S810-S830.

[0050] S810: Obtain a sleep instruction from the vehicle domain controller.

[0051] S820: Based on the sleep instruction, obtain a first operating current of the first load and a second operating current of the second load.

[0052] S830, based on the first operating current and the second operating current being less than the operating current threshold, sending a first mode switching instruction to the first intelligent power distribution module and the second intelligent power distribution module, sending an on instruction to the first conversion unit, and sending a off instruction to the second conversion unit.

[0053] Wherein, the first intelligent power distribution module and the second intelligent power distribution module are both used to switch to the low power consumption mode according to the first mode switching instruction.

[0054] Specifically, the first load includes a first voltage controller, the second load includes a second voltage controller, the first intelligent power distribution module is used to use the second voltage to power the second voltage controller, and the second intelligent power distribution module is used to use the first voltage to power the first voltage controller. After the control module obtains the sleep instruction of the automobile domain controller, the first operating current of the first voltage controller and the second operating current of the second voltage controller are detected. After determining that the first operating current is less than the operating current threshold, the control module directly sends a first mode switching instruction to the second intelligent power distribution module, so that the second intelligent power distribution module switches to a low power consumption mode, and uses the sleep current to power the sleep state of the first voltage controller. After the control module determines that the second operating current is less than the current threshold, the control module sends a first mode switching instruction to the first intelligent power distribution module. The first intelligent power distribution module switches to a low power consumption mode according to the first mode switching instruction, and powers the sleep state of the second voltage controller. Since the operating power of the second conversion unit is large, the operating current provided in the sleep state is large, which will cause unnecessary energy consumption during sleep. Therefore, the control module will turn off the second conversion unit after receiving the sleep instruction, and turn on the second conversion unit for voltage conversion and power supply. Based on the sleep instruction, the control module sends an on instruction to the first conversion unit and a off instruction to the second conversion unit. The second conversion unit stops providing a large operating current to the power supply network based on the off instruction, and the first conversion unit starts working based on the on instruction. When the first conversion unit starts to provide the second voltage to the power supply network, it also provides the power supply network with an operating current with a smaller current value that can maintain the sleep state of the second voltage controller. Therefore, there is no need to use the second conversion unit with a larger operating current to power the second voltage controller, thereby avoiding waste of resources.

[0055] In some embodiments, the automotive domain controller also includes a first drive module and a second drive module; the first drive module is used to drive the second load with a second voltage, and the second drive module is used to drive the first load with a first voltage; after obtaining a first operating current of the first load and a second operating current of the second load based on a sleep instruction, the method also includes: based on the first operating current and the second operating current being less than an operating current threshold, sending a shutdown signal to the first drive module and the second drive module.

[0056] Specifically, the first load includes a first voltage power load, and the second load includes a second voltage power load. When the vehicle is dormant, it is necessary to cut off the power supply to all power loads to avoid unnecessary waste of resources in the dormant state. Therefore, after receiving the dormant instruction, the vehicle domain controller will detect the first operating current and the second operating current to determine whether the first voltage power load and the second voltage power load have stopped working. After determining that the first operating current is less than the operating current threshold, the control module sends a shutdown signal to the second drive module to control the second drive module to shut down, thereby shutting down the power supply of the vehicle domain controller to the first voltage power load. After determining that the second operating current is less than the operating current threshold, the control module sends a shutdown signal to the first drive module to control the first drive module to shut down, thereby shutting down the power supply of the vehicle domain controller to the second voltage power load, thereby reducing resource consumption when the vehicle is dormant.

[0057] In some embodiments, the automobile domain controller further includes a first intelligent power distribution module and a first drive module; the first intelligent power distribution module is used to use the second voltage to supply power to the second load, and the first drive module is used to use the second voltage to drive the second load. The control method further includes: obtaining overcurrent fault information of the second load; based on the overcurrent fault information, controlling the fault protection module of the automobile domain controller to cut off the connection between the first intelligent power distribution module and the first drive module and the power network.

[0058] Specifically, the second load includes a second voltage controller and a second voltage power load, the first intelligent power distribution module uses the second voltage to power the second voltage controller, and the first drive module uses the first voltage to drive the second voltage power load. The first intelligent power distribution module and the first drive module both have an overcurrent protection function, so as to avoid damage to other components in the automotive domain controller when an overcurrent fault occurs in the second voltage controller and the second voltage power load. During the operation of the automotive domain controller, the first intelligent power distribution module will cut off the connection between the power supply network and the second voltage controller according to the overcurrent fault of the second voltage controller. The first drive module will cut off the connection between the power supply network and the second voltage power load according to the overcurrent fault of the second voltage power load. When the first intelligent power distribution module and the first drive module fail and cannot provide overcurrent protection, the control module obtains the overcurrent fault information of the second voltage controller or the second voltage power load, and the control module controls the fault protection module to start working according to the overcurrent fault information, and cuts off the first intelligent power distribution module and the first drive module from the power supply network, thereby realizing the connection between the second voltage controller and the second voltage power load and the power supply network, and avoiding damage to other components in the automotive domain controller due to overcurrent fault. Moreover, after the fault protection module cuts off the connection between the second voltage controller and the second voltage power load and the power supply network, the second conversion unit can continue to work normally and supply power to the power supply network. Therefore, the power supply of the power supply network to the control module is not interrupted and the control module can still work normally.

[0059] In some embodiments, obtaining overcurrent fault information of the second load includes: obtaining a second operating current of the second load; and determining the overcurrent fault information of the second load based on the second operating current being greater than a current detection threshold.

[0060] Specifically, the control module detects the second operating current of the second load in real time. When the second operating current exceeds the current detection threshold, the control module determines that an overcurrent fault occurs in the second load and obtains overcurrent fault information of the second load.

[0061] Figure 5 A flow chart of another control method of a vehicle domain controller provided by an embodiment of the present disclosure is provided. The control method is applied to the vehicle domain controller described in any of the above embodiments. The vehicle domain controller further includes a switching module, which is electrically connected to the first conversion unit and the second conversion unit respectively. Figure 5 As shown, the control method includes: S910 and S920. S910, obtaining fault information output by the first conversion unit. The fault information is generated by the first conversion unit when the output current is abnormal. S920, sending an opening instruction to the second conversion unit and sending a closing instruction to the first conversion unit.

[0062] Specifically, when the second voltage controller is awakened from the sleep state before the vehicle domain controller, since the power supply current required for the operation of the second voltage controller is relatively large, and the first intelligent power distribution module is still powered by the first conversion unit using the first current through the power supply network, the current consumption value of the first intelligent power distribution module is greater than the current value of the first current, thereby causing the first conversion unit to have an abnormal output current problem, and the first conversion unit generates fault information. According to the fault information, the switching module determines that the first conversion unit cannot meet the normal working requirements of the first intelligent power distribution module by providing the first current to the first intelligent power distribution module, and then the switching module sends an opening instruction to the second conversion unit and a closing instruction to the first conversion unit, so that the second conversion unit is turned on and the first conversion unit is turned off, and the second conversion unit uses the second current to power the power supply network, so that the power supply of the power supply network returns to normal. At this time, the power supply network uses the second current to power the first intelligent power distribution module, and the first intelligent power distribution module also uses the second current with a larger current value to power the second voltage controller, so that the current provided by the first intelligent power distribution module can meet the consumption requirements of the second voltage controller, and the vehicle domain controller is also awakened. Therefore, in the present invention, when the second voltage controller is awakened before the vehicle domain controller, the voltage of the power supply network is consumed due to the insufficient current supply capability of the first conversion unit, and the control module cannot work normally due to insufficient voltage, the switching module can directly turn on the second conversion unit and turn off the first conversion unit, thereby meeting the power supply demand for the power supply network, so that the control module and the first intelligent power distribution module can work normally.

[0063] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0064] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automotive domain controller, characterized in that: include: A voltage conversion module, comprising a first conversion unit and a second conversion unit, wherein the first conversion unit and the second conversion unit are both electrically connected to an external power supply, and the first conversion unit and the second conversion unit are used to convert a first voltage output by the external power supply into a second voltage; an operating power of the first conversion unit is less than an operating power of the second conversion unit; A power supply network, wherein the first conversion unit uses the second voltage to charge the power supply network; A control module, configured to control the second conversion unit to be turned on and the first conversion unit to be turned off according to the voltage value of the power supply network satisfying the first voltage threshold; the second conversion unit is configured to supply power to the power supply network; The automotive domain controller is used to power a first load according to the first voltage, and to power a second load according to the second voltage through the power supply network; the first load is a load driven based on the first voltage; and the second load is a load driven based on the second voltage.

2. The automotive domain controller according to claim 1, characterized in that: The second load includes a second voltage controller and a second voltage power load; The automobile domain controller also includes: a first intelligent power distribution module, electrically connected to the power supply network, the first intelligent power distribution module being used to supply power to the second voltage controller using the second voltage; a first driving module, electrically connected to the power supply network, and configured to drive the second voltage power load using the second voltage; A fault protection module is connected between the power supply network and the first intelligent power distribution module and the first driving module, and the control end of the fault protection module is electrically connected to the control module; the control module is used to control the fault protection module to disconnect the second voltage controller and the second voltage power load from the power supply network according to a fault in the second voltage controller and / or the second voltage power load.

3. The automotive domain controller according to claim 1, characterized in that: The automobile domain controller also includes a switching module and a first intelligent power distribution module; The switching module is electrically connected to the first conversion unit and the second conversion unit respectively; the first conversion unit is electrically connected to the first intelligent power distribution module, and the second conversion unit is electrically connected to the first intelligent power distribution module through the power supply network; the first intelligent power distribution module is electrically connected to the second load; Among them, the first conversion unit is used to adopt a first current to supply power to the first intelligent distribution module through the power supply network; the switching module is used to switch the second conversion unit to adopt a second current to supply power to the first intelligent distribution module through the power supply network according to the current consumption value of the first intelligent distribution module being greater than the current value of the first current, and the current value of the second current is greater than the current value of the first current; the first intelligent distribution module is used to adopt the second voltage to supply power to the second load.

4. The automotive domain controller according to claim 1, characterized in that: Also includes a power module; The power supply module is connected between the power supply network and the control module; the power supply network is used to charge the power supply module; and the power supply module is used to supply power to the control module.

5. A control method for an automobile domain controller, characterized in that: The automotive domain controller is applied to any one of claims 1 to 4; the automotive domain controller further comprises a power module; the power network is electrically connected to the control module through the power module; the power network is used to charge the power module; The method comprises: Based on the supply voltage of the power module reaching a second voltage threshold, monitoring the pre-charge voltage of the power network; Based on the pre-charge voltage reaching a first voltage threshold, controlling the second conversion unit to turn on; Based on the second conversion unit being turned on, the first conversion unit is controlled to be turned off.

6. The control method according to claim 5, characterized in that: The automobile domain controller further includes a first intelligent power distribution module and a second intelligent power distribution module; the first intelligent power distribution module is used to use the second voltage to supply power to the second load, and the second intelligent power distribution module is used to use the first voltage to supply power to the first load; The method further comprises: Obtaining a sleep instruction of the automobile domain controller; Based on the sleep instruction, obtaining a first operating current of the first load and a second operating current of the second load; Based on the fact that the first operating current and the second operating current are less than an operating current threshold, sending a first mode switching instruction to the first intelligent power distribution module and the second intelligent power distribution module, sending an on instruction to the first conversion unit, and sending a off instruction to the second conversion unit; The first intelligent power distribution module and the second intelligent power distribution module are both used to switch to a low power consumption mode according to the first mode switching instruction.

7. The control method according to claim 6, characterized in that: The automobile domain controller further includes a first driving module and a second driving module; the first driving module is used to drive the second load with a second voltage, and the second driving module is used to drive the first load with a first voltage; After acquiring the first operating current of the first load and the second operating current of the second load based on the sleep instruction, the method further includes: Based on the first operating current and the second operating current being less than an operating current threshold, a shutdown signal is sent to the first driving module and the second driving module.

8. The control method according to claim 5, characterized in that: The automobile domain controller further includes a first intelligent power distribution module and a first driving module; the first intelligent power distribution module is used to use the second voltage to supply power to the second load, and the first driving module is used to use the second voltage to drive the second load; The method further comprises: Obtaining overcurrent fault information of the second load; Based on the overcurrent fault information, the fault protection module of the vehicle domain controller is controlled to cut off the connection between the first intelligent power distribution module and the first drive module and the power supply network.

9. The control method according to claim 8, characterized in that: The obtaining the overcurrent fault information of the second load includes: obtaining a second operating current of the second load; Based on the second operating current being greater than a current detection threshold, overcurrent fault information of the second load is determined.

10. A control method for an automobile domain controller, characterized in that: The automobile domain controller applied to any one of claims 1 to 4, wherein the automobile domain controller further comprises a switching module, and the switching module is electrically connected to the first conversion unit and the second conversion unit respectively; The method comprises: Acquire fault information output by the first conversion unit; wherein the fault information is generated by the first conversion unit when the output current is abnormal; An on instruction is sent to the second conversion unit and a off instruction is sent to the first conversion unit.

Images