Commercial vehicle power supply control method and device

Abstract

The invention provides a control method and device for a commercial vehicle power supply, and belongs to the technical field of new energy automobiles, and the method comprises the steps: obtaining a power utilization demand of a socket load sent by a terminal, obtaining a socket load power utilization control instruction based on the power utilization demand of the socket load, and controlling a voltage reduction module based on the socket load power utilization control instruction, and the control module is used for reducing the high voltage of the power supply to the voltage required by the socket load, controlling the DCAC module based on the power utilization control instruction of the socket load, converting the direct current of the voltage of the socket load after voltage reduction to the alternating current, and performing power supply output for the socket load when the DCAC module is connected with the socket load. The technical problem that in the prior art, cost is high when a commercial vehicle multiplexes a DCAC module to achieve 220V AC power taking is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a control method and device for a commercial vehicle power supply. Background Art

[0002] Passenger cars have the function of discharging 220V / AC (alternating current) externally, and the solution they adopt is a two-way OBC (On-Board Charger), which uses the AC charging port and the on-board OBC to achieve external discharge.

[0003] Existing commercial vehicles need to achieve external discharge. At present, they still use low-voltage batteries 24V to 220V / AC, but do not have the function of directly converting high-voltage electricity to 220V / AC. The current common 24V to 220V / AC is 500W and 1Kw. The power converted is too small to meet the cooking needs of truck drivers. Due to the needs of the upper body, some commercial vehicles also use the upper body high-voltage reserved interface (including the upper body pre-charge and main contactor) to provide DC power to the upper body, and this part and the upper body as a whole cannot power the external equipment. This is mainly because the DCAC (power converter) consumes a lot of power, which can easily cause the low-voltage battery to be over-discharged and the life span is greatly reduced. At the same time, the cost of 24V DCAC equipment is relatively expensive, and the vehicle wiring harness is matched with large currents, and the cable cost will also increase. Therefore, there is a technical problem in the prior art that the cost of 220V AC power supply is high for commercial vehicles to reuse DCAC modules. Summary of the invention In view of this, it is necessary to provide a control method and device for a commercial vehicle power supply to solve the technical problem in the prior art that the cost of obtaining 220V AC power by reusing DCAC modules in commercial vehicles is high.

[0004] In order to solve the above technical problems, on the one hand, the present invention provides a control method for a commercial vehicle power supply, wherein the power supply is connected to a socket load through a step-down module and a DCAC module, and the method comprises: Acquire the power demand of the socket load sent by the terminal, and obtain the socket load power control instruction based on the power demand of the socket load; Based on the socket load power control instruction, the voltage reduction module is controlled to reduce the high voltage of the power supply to the voltage required by the socket load; The DCAC module is controlled based on the socket load power control instruction to convert the DC power of the socket load voltage after the voltage reduction into AC power, and power is output for the socket load when the DCAC module is connected to the socket load.

[0005] In a possible implementation, the power supply is further connected to the motor load via a step-down module and a conversion module, and the method further includes: Acquire the power demand of the motor load sent by the terminal, and obtain the motor power control instruction based on the power demand of the motor load; Based on the motor power control instruction, the voltage reduction module is controlled to reduce the high voltage of the power supply to the voltage required by the motor load; Controlling the DCAC module based on the motor power control instruction, disconnecting the DCAC module from the step-down module and generating a switching instruction; Based on the switching instruction, the conversion module is controlled to connect the voltage reduction module with the motor and output power to the motor.

[0006] In a possible implementation, the conversion module further includes: Checking the disconnection between the DCAC module and the step-down module based on the switching instruction to obtain a check result; The motor power control instruction is sent again based on the inspection result.

[0007] In a possible implementation, the checking whether the DCAC module is disconnected from the buck module based on the switching instruction to obtain a checking result includes: Based on the switching instruction, the DCAC module is disconnected from the buck module to perform a sticking check and obtain a check result.

[0008] In a possible implementation, the method further includes: The output power of the DCAC module is obtained through the circuit protection and monitoring module, and an overload short circuit protection operation is performed based on the output power.

[0009] In a possible implementation, the performing an overload short circuit protection operation based on the output power includes: Based on matching the output power with a preset safety threshold, an overload short circuit protection operation is performed when the output power is not within the safety threshold range.

[0010] In a possible implementation, the overload short circuit protection operation includes: Reduce the power output of the DCAC module or shut down the entire vehicle.

[0011] In a possible implementation manner, before obtaining the power demand of the socket load sent by the terminal, the method includes: The vehicle power status detection result is obtained, and the vehicle power status detection result is matched with a preset battery normal state threshold.

[0012] In one possible implementation, When the vehicle status detection result is within a preset battery normal status threshold range, the power demand of the socket load sent by the terminal is obtained.

[0013] On the other hand, the present invention also provides a control device for a commercial vehicle power supply, comprising: A socket load power control instruction generation module, used to obtain the power demand of the socket load sent by the terminal, and obtain the socket load power control instruction based on the power demand of the socket load; A socket load voltage generating module, used to control the voltage reduction module based on the socket load power control instruction, so as to reduce the high voltage of the power supply to the voltage required by the socket load; The socket load power supply output module is used to control the DCAC module based on the socket load power control instruction, convert the DC power of the stepped-down socket load voltage into AC power, and output power to the socket load when the DCAC module is connected to the socket load.

[0014] The beneficial effects of the present invention are as follows: the control method of the commercial vehicle power supply provided by the present invention includes: obtaining the power demand of the socket load sent by the terminal, and obtaining the socket load power control instruction based on the power demand of the socket load; controlling the step-down module based on the socket load power control instruction to reduce the high voltage of the power supply to the voltage required by the socket load; controlling the DCAC module based on the socket load power control instruction to convert the DC power of the stepped-down socket load voltage into AC power, and supplying power to the socket load when the DCAC module is connected to the socket load. This application reduces costs while achieving 220V AC single-phase AC output by utilizing the original DCAC module and adding control logic and step-down modules. The control logic mainly generates a socket load power control instruction, controls the step-down module to step down the voltage through the instruction, and converts the stepped-down voltage into an AC voltage that can charge the life load through the DCAC module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the 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 work.

[0016] Figure 1 A schematic flow chart of an embodiment of a method for controlling a commercial vehicle power supply provided by the present invention; Figure 2 A control flow chart of an embodiment of a control method for a commercial vehicle power supply provided by the present invention; Figure 3A system diagram of an embodiment of a control method for a commercial vehicle power supply provided by the present invention; Figure 4 A schematic structural diagram of an embodiment of a control device for a commercial vehicle power supply provided by the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0019] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0020] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a control method and device for a commercial vehicle power supply, which are described below respectively.

[0023] Figure 1 A flow chart of an embodiment of a control method for a commercial vehicle power supply provided by the present invention, Figure 2 A control flow chart of an embodiment of a control method for a commercial vehicle power supply provided by the present invention and Figure 3 A system diagram of an embodiment of a control method for a commercial vehicle power supply provided by the present invention includes: S101, obtaining a power demand of a socket load sent by a terminal, and obtaining a socket load power control instruction based on the power demand of the socket load; S102, controlling the voltage reduction module based on the socket load power control instruction to reduce the high voltage of the power supply to the voltage required by the socket load; S103 , based on the socket load power control instruction, controlling the DCAC (power converter) module, converting the DC power of the socket load voltage after the voltage reduction into AC power, and outputting power to the socket load when the DCAC module is connected to the socket load.

[0024] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0025] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0026] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0027] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0028] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0029] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0030] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0031] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start, the circuit conversion module switches the DCAC output to the motor output.

[0032] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0033] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0034] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0035] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0036] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0037] 220V AC power supply and motor power supply priority: Motor power supply is prioritized, and 220V AC (Alternating current) power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220V AC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0038] It can be further understood that, through this application, 220V / AC power can be obtained without adding any additional electrical components on the vehicle side, and the demand for higher power can be met. Commercial vehicle customers can power engineering equipment and daily life needs outdoors.

[0039] In some embodiments of the present invention, the power supply is further connected to the motor load via a step-down module and a conversion module, and the method further includes: Obtaining the power demand of the motor load sent by the terminal, and obtaining the motor power control instruction based on the power demand of the motor load; Based on the motor power control instruction, the voltage reduction module is controlled to reduce the high voltage of the power supply to the voltage required by the motor load; Control the DCAC module based on the motor power control command, disconnect the DCAC module from the step-down module and generate a switching command; Based on the switching instruction, the conversion module is controlled to connect the step-down module to the motor load and output power to the motor load.

[0040] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0041] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0042] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0043] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0044] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0045] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0046] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0047] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0048] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0049] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0050] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0051] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0052] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0053] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0054] In some embodiments of the present invention, the conversion module further includes: Checking the disconnection between the DCAC module and the step-down module based on the switching instruction to obtain a check result; Based on the inspection results, the motor power control command is sent again.

[0055] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0056] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0057] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0058] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0059] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0060] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0061] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0062] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0063] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0064] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0065] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0066] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0067] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0068] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0069] In some embodiments of the present invention, the disconnection between the DCAC module and the step-down module is checked based on the switching instruction to obtain the check result, including: Based on the switching instruction, the DCAC module is disconnected from the step-down module to perform a sticking check and obtain an inspection result.

[0070] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0071] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0072] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0073] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0074] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0075] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0076] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0077] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0078] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0079] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0080] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0081] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0082] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0083] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0084] In some embodiments of the present invention, the method further comprises: The output power of the DCAC module is obtained through the circuit protection and monitoring module, and overload short-circuit protection operation is performed based on the output power.

[0085] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0086] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0087] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0088] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0089] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0090] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0091] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0092] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0093] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0094] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0095] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0096] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0097] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0098] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0099] In some embodiments of the present invention, an overload short circuit protection operation is performed based on the output power, including: Based on matching the output power with a preset safety threshold, an overload short-circuit protection operation is performed when the output power is not within the safety threshold range.

[0100] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0101] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0102] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0103] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0104] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0105] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0106] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0107] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0108] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0109] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0110] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0111] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0112] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0113] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0114] In some embodiments of the present invention, the overload short circuit protection operation includes: Reduce the power output of the DCAC module or shut down the entire vehicle.

[0115] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0116] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0117] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0118] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0119] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0120] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0121] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0122] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0123] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0124] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0125] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0126] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0127] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0128] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0129] In some embodiments of the present invention, before obtaining the power demand of the socket load sent by the terminal, the process includes: Obtain the vehicle power status detection result, and match the vehicle power status detection result with the preset battery normal state threshold.

[0130] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0131] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0132] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0133] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0134] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0135] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0136] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0137] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0138] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0139] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0140] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0141] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0142] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0143] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0144] In some embodiments of the present invention, When the vehicle status detection result is within the preset battery normal status threshold range, the power demand of the socket load sent by the terminal is obtained.

[0145] It is understandable that the present invention is composed of the following components: power supply, step-down module, DCAC module, circuit conversion module, 220V socket and terminal. The functions of each module are as follows: Power supply: mainly used to supply power to the whole vehicle.

[0146] Step-down module: mainly used to reduce the high voltage of the power supply to the voltage required by the vehicle.

[0147] DCAC module: mainly used to convert direct current into alternating current, and drive the DCAC module to work according to different needs.

[0148] Circuit conversion module: mainly used to transmit the alternating current output by DCAC to the corresponding load according to different needs.

[0149] 220V socket: mainly used to provide a household electricity interface and give corresponding signals to the terminal.

[0150] Terminal: Mainly used to adjust the operation of each module according to different needs.

[0151] The control strategy is as follows: Vehicle power status detection: 220V power is taken when the vehicle is parked and the low-voltage power supply is turned on.

[0152] Driving priority: Regardless of the state, when the vehicle is in the ready state or switched to the upper start state, the circuit conversion module switches the DCAC output to the motor output.

[0153] Initial return: Regardless of the state of the conversion module, when the vehicle is powered off, the conversion module switches to the motor output state.

[0154] Adhesion and continuity detection: Before the DCAC module works, the switching module needs to be tested for continuity; if there is a problem in the detection, the fault will be reported; after power is off, the conversion module will be tested for adhesion, and any problem will be reported and stored.

[0155] Overload and short circuit protection: When it is detected that the external output power exceeds the designed maximum value, the power output will be reduced or the machine will be shut down.

[0156] Uninstall cut-off protection: During the switching process, the conversion module must be unloaded before switching.

[0157] It can be further understood that the present invention utilizes the original DCAC modules and terminals of the whole vehicle, that is, the module for powering the steering motor or the air pump motor is reused with the module for controlling the bridge arm, and by adding a control logic and circuit conversion module and a voltage regulation module, 220V AC single-phase alternating current output and motor three-phase power output are achieved.

[0158] 220V AC power supply and motor power supply priority: motor power supply is prioritized, and 220V AC power supply is the lowest. That is, when driving, there is no 220V output; when parking, the DCAC two-phase power is output to the socket through the 220V socket switch and terminal to meet the 220VAC alternating current, and the motor power supply is cut off at the same time to prevent the motor from working abnormally.

[0159] Figure 4 A schematic diagram of an embodiment of a control device for a commercial vehicle power supply provided by the present invention includes: The socket load power control instruction generation module 401 is used to obtain the power demand of the socket load sent by the terminal, and obtain the socket load power control instruction based on the power demand of the socket load; The socket load voltage generating module 402 is used to control the voltage reduction module based on the socket load power control instruction to reduce the high voltage of the power supply to the voltage required by the socket load; The socket load power supply output module 403 is used to control the DCAC module based on the socket load power control instruction, convert the DC power of the socket load voltage after the voltage reduction into AC power, and output power to the socket load when the DCAC module is connected to the socket load. The control device 400 of the commercial vehicle power supply provided in the above embodiment can implement the technical solution described in the control method embodiment of the commercial vehicle power supply. The specific implementation principles of the above modules or units can refer to the corresponding contents in the control method embodiment of the commercial vehicle power supply, which will not be repeated here.

[0160] The control method and device for the commercial vehicle power supply provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A control method for a commercial vehicle power supply, characterized in that: The power supply is connected to the socket load through the step-down module and the DCAC module, and the method comprises: Acquire the power demand of the socket load sent by the terminal, and obtain the socket load power control instruction based on the power demand of the socket load; Based on the socket load power control instruction, the voltage reduction module is controlled to reduce the high voltage of the power supply to the voltage required by the socket load; The DCAC module is controlled based on the socket load power control instruction to convert the DC power of the socket load voltage after the voltage reduction into AC power, and power is output for the socket load when the DCAC module is connected to the socket load.

2. The control method of a commercial vehicle power supply according to claim 1, characterized in that: The power supply is also connected to the motor load via a step-down module and a conversion module. The method further includes: Acquire the power demand of the motor load sent by the terminal, and obtain the motor power control instruction based on the power demand of the motor load; Based on the motor power control instruction, the voltage reduction module is controlled to reduce the high voltage of the power supply to the voltage required by the motor load; Controlling the DCAC module based on the motor power control instruction, disconnecting the DCAC module from the step-down module and generating a switching instruction; Based on the switching instruction, the conversion module is controlled to connect the voltage reduction module to the motor load and output power to the motor load.

3. The control method of the commercial vehicle power supply according to claim 2, characterized in that: The conversion module further includes: Checking the disconnection between the DCAC module and the step-down module based on the switching instruction to obtain a check result; The motor power control instruction is sent again based on the inspection result.

4. The control method of the commercial vehicle power supply according to claim 3, characterized in that: The checking of disconnection between the DCAC module and the step-down module based on the switching instruction to obtain a checking result includes: Based on the switching instruction, the DCAC module is disconnected from the buck module to perform a sticking check and obtain a check result.

5. The control method of the commercial vehicle power supply according to claim 4, characterized in that: The method further comprises: The output power of the DCAC module is obtained through the circuit protection and monitoring module, and an overload short circuit protection operation is performed based on the output power.

6. The control method of the commercial vehicle power supply according to claim 5, characterized in that: The performing an overload short circuit protection operation based on the output power comprises: The output power is matched with a preset safety threshold, and when the output power is not within the safety threshold range, an overload short circuit protection operation is performed.

7. The control method of the commercial vehicle power supply according to claim 6, characterized in that: The overload short circuit protection operation includes: Reduce the power output of the DCAC module or shut down the entire vehicle.

8. The control method of a commercial vehicle power supply according to claim 1, characterized in that: Before obtaining the power demand of the socket load sent by the terminal, the method includes: The vehicle power status detection result is obtained, and the vehicle power status detection result is matched with a preset battery normal state threshold.

9. The control method of a commercial vehicle power supply according to claim 1 or 8, characterized in that: When the vehicle status detection result is within a preset battery normal status threshold range, the power demand of the socket load sent by the terminal is obtained.

10. A control device for a commercial vehicle power supply, characterized in that: include: A socket load power control instruction generation module, used to obtain the power demand of the socket load sent by the terminal, and obtain the socket load power control instruction based on the power demand of the socket load; A socket load voltage generating module, used to control the voltage reduction module based on the socket load power control instruction, so as to reduce the high voltage of the power supply to the voltage required by the socket load; The socket load power supply output module is used to control the DCAC module based on the socket load power control instruction, convert the DC power of the stepped-down socket load voltage into AC power, and output power to the socket load when the DCAC module is connected to the socket load.

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