CN115257458A - Control method and control device of DCDC converter and vehicle - Google Patents
Control method and control device of DCDC converter and vehicle Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
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Abstract
The invention discloses a control method and a control device of a DCDC converter and a vehicle. Wherein, the method comprises the following steps: acquiring the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information; and generating a target instruction set based on the working mode and the battery state information, wherein the target instruction set is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at different preset voltage output levels, and the preset voltage output levels are determined by the electrical network characteristics of the vehicle. The invention solves the technical problem of low energy utility of the vehicle caused by single output control strategy of the existing DCDC converter.
Description
Technical Field
The invention relates to the technical field of control of DCDC converters, in particular to a control method and a control device of a DCDC converter and a vehicle.
Background
Under the background that the double pressure of energy shortage and environmental pollution is increasing, research and development of new energy automobiles are paid attention by various automobile manufacturers, and a plurality of different types of electric automobiles appear on the market. The power system of the pure electric vehicle mainly comprises a driving motor and a power battery, and the performance of the whole vehicle can be further improved by the whole vehicle control and intelligent energy management technology. Because the pure electric vehicle is provided with high-low voltage batteries, namely a high-voltage power battery and a 12V storage battery, and compared with the traditional vehicle, the running mode of the electric vehicle is more diversified, and if the power output energy management of the vehicle cannot be effectively carried out, the drivability, the dynamic property and the economic performance of the whole vehicle are influenced. Therefore, how to intelligently and effectively manage power output energy in different modes is one of the key problems to be solved at present.
In the prior art, a power battery is used as a power supply, a DCDC converter is used for charging an auxiliary battery by using a gradual current reduction method, a single control method and strategy are adopted in a driving process, intelligent control is not performed based on different operation modes of an electric vehicle, so that the output of the DCDC converter cannot be effectively adjusted along with the change of vehicle conditions and the requirement of a driver, the energy utility of the vehicle is further reduced, and the driving performance and the economical efficiency of the vehicle in the working process cannot be guaranteed.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a control method and a control device of a DCDC converter and a vehicle, and aims to at least solve the technical problem of low energy utility of the vehicle caused by single output control strategy of the existing DCDC converter.
According to an aspect of an embodiment of the present invention, there is provided a control method of a DCDC converter, including: acquiring the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information; and generating a target instruction set based on the working mode and the battery state information, wherein the target instruction set is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at different preset voltage output levels, and the preset voltage output levels are determined by the electrical network characteristics of the vehicle.
Optionally, the preset voltage output level includes a first output level and a second output level, an output voltage value of the first output level is greater than an output voltage value of the second output level, and the generating the target instruction set based on the operating mode and the battery state information includes: responding to the fact that the working mode is the starting mode, and obtaining storage battery state information, wherein the storage battery state information comprises a current charge value of the storage battery; under the condition that the current charge value is smaller than a preset charge lower limit value, generating a first control instruction in a target instruction set, wherein the first control instruction is used for controlling a DCDC converter to transmit the voltage in a power battery to a storage battery at a first output level; and under the condition that the current charge value is greater than the preset charge lower limit value and less than the preset charge upper limit value, generating a second control instruction in the target instruction set, wherein the second control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a second output level.
Optionally, the preset voltage output levels further include a third output level, an output voltage value of the third output level is between an output voltage value of the first output level and an output voltage value of the second output level, and the target instruction set is generated based on the operating mode and the battery state information, and the method further includes: responding to the working mode as a driving mode, and acquiring the state information of the storage battery; under the condition that the current charge value is smaller than a preset charge lower limit value, generating a first control instruction; generating a second control instruction under the condition that the current charge value is greater than or equal to the preset charge upper limit value; and under the condition that the current charge value is greater than or equal to the preset lower charge limit value and less than the preset upper charge limit value, generating a third control instruction in the target instruction set, wherein the third control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a third output level.
Optionally, the preset voltage output level includes a fourth output level, an output voltage value corresponding to the fourth output level is zero, and the target instruction set is generated based on the operating mode and the battery state information, further including: responding to the working mode as a limp mode, and acquiring the state information of the storage battery; under the condition that the current charge value is larger than the preset charge lower limit value, generating a fourth control instruction in the target instruction set, wherein the fourth control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a fourth output level; and generating a second control instruction under the condition that the current charge value is smaller than the preset charge lower limit value.
Optionally, generating the target instruction set based on the operating mode and the battery status information further includes: responding to the working mode as a parking charging mode, and acquiring storage battery state information; under the condition that the current charge value is larger than a preset charge lower limit value, generating a first control instruction; and generating a third control instruction when the current charge value is smaller than the preset charge lower limit value.
Optionally, generating the target instruction set based on the operating mode and the battery status information further includes: responding to the condition that the working mode is the energy recovery mode, and acquiring power battery state information, wherein the power battery state information comprises a high-voltage charge value of the power battery; generating a first control instruction under the condition that the high-voltage charge value is larger than a high-voltage discharge threshold value, wherein the high-voltage discharge threshold value is the highest charge value for keeping a safe working state during energy recovery of a preset power battery; and generating one of a second control instruction and a third control instruction when the high-voltage charge value is smaller than the high-voltage discharge threshold value.
Optionally, generating the target instruction set based on the operating mode and the battery status information further includes: in response to the working mode being a fault mode, acquiring storage battery state information and a fault type of the vehicle, wherein the storage battery state information comprises a temperature value of the storage battery, and the fault type comprises at least one of the following: the storage battery detection system is abnormal, and the communication line is abnormal and is used for transmitting the storage battery state information to a vehicle body controller of the vehicle; generating a fourth control instruction under the condition that the current charge value is greater than the preset temperature value; and generating a third control command when the fault type is at least one of the storage battery detection system abnormity and the communication line abnormity.
According to another aspect of the embodiments of the present invention, there is also provided a control apparatus of a DCDC converter, including: the acquisition module is used for acquiring the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information; and the generation module is used for generating a target instruction set based on the working mode and the battery state information, and the target instruction set is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at different preset voltage output levels, wherein the preset voltage output levels are determined by the electrical network characteristics of the vehicle.
According to a further aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program when executed controls an apparatus in which the computer-readable storage medium is located to perform the method of any one of the preceding claims.
According to a further aspect of an embodiment of the present invention, there is also provided a vehicle comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the method in any of the preceding.
In the embodiment of the invention, a mode of acquiring the working mode and the battery state information of a vehicle is adopted, a target instruction set is generated based on the working mode and the battery state information, and the DCDC converter is controlled by the target instruction set to work the voltage in the power battery at different preset voltage output levels, so that the purpose of comprehensively determining the output voltage of the DCDC converter by combining the working mode of the electric vehicle, the state of the storage battery and the state of the power battery is achieved, the DCDC converter is switched and adaptively adjusted according to the mode of the vehicle, the driving performance and the economical efficiency of the vehicle in different modes are improved, the effective control of the output of a low-voltage power supply of the vehicle is realized by further combining the battery state information, the energy utility of the vehicle is fully improved, and the technical problem of low energy utility of the vehicle caused by the single output control strategy of the existing DCDC converter is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware configuration of a computer terminal of a control method of a DCDC converter according to an alternative embodiment of the present invention;
FIG. 2 is a flow chart of a method of controlling a DCDC converter in accordance with an alternate embodiment of the present invention;
FIG. 3 is a schematic block diagram of a vehicle powertrain according to an alternate embodiment of the present invention;
FIG. 4 is a schematic block diagram of a control system of a DCDC converter in accordance with an alternative embodiment of the present invention;
FIG. 5 is a schematic illustration of a mode management profile for a vehicle according to an alternate embodiment of the present invention;
FIG. 6 is a flow chart of a method of controlling a DCDC converter according to an alternate embodiment of the present invention;
FIG. 7 is a flow chart of a method of controlling a DCDC converter according to an alternate embodiment of the present invention;
FIG. 8 is a flow chart of a method of controlling a DCDC converter in accordance with an alternate embodiment of the present invention;
FIG. 9 is a flow chart of a method of controlling a DCDC converter in accordance with an alternate embodiment of the present invention;
FIG. 10 is a flow chart of a method of controlling a DCDC converter in accordance with an alternate embodiment of the present invention;
FIG. 11 is a flow chart of a method of controlling a DCDC converter in accordance with an alternate embodiment of the present invention;
fig. 12 is a block diagram of a control apparatus of a DCDC converter according to an alternative embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the prior art, a fixed output or gradual-reduction current strategy is usually adopted by a DCDC converter to charge a storage battery, the control method is single, and output control cannot be performed based on different operation modes of a vehicle, so that the driving performance and the comfort of the vehicle in different scenes are difficult to ensure. In order to make the DCDC converter work more efficiently and reliably, research and design on the energy management strategy of the DCDC converter are necessary.
In accordance with one embodiment of the present invention, there is provided an embodiment of a control method for a DCDC converter, wherein the steps shown in the flowchart of the figure may be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in an order different from that shown or described herein.
The method embodiments may be performed in an electronic device or similar computing device that includes a memory and a processor in a vehicle. Taking the example of an electronic device operating on a vehicle, as shown in fig. 1, the electronic device of the vehicle may include one or more processors 102 (the processors may include, but are not limited to, central Processing Units (CPUs), graphics Processing Units (GPUs), digital Signal Processing (DSP) chips, microprocessors (MCUs), programmable logic devices (FPGAs), neural Network Processors (NPUs), tensor Processors (TPUs), artificial Intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the electronic device of the automobile may further include a transmission device 106 for communication function, an input-output device 108, and a display 110. It will be understood by those skilled in the art that the structure shown in fig. 1 is merely an illustration and is not intended to limit the structure of the electronic device of the vehicle. For example, the electronic device of the vehicle may also include more or fewer components than described above, or have a different configuration than described above.
The memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as a computer program corresponding to the control method of the DCDC converter in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implements the control method of the DCDC converter. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
The display 110 may be, for example, a touch screen type Liquid Crystal Display (LCD). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a Graphical User Interface (GUI) with which a user can interact by touching finger contacts and/or gestures on a touch-sensitive surface, where the human interaction functionality optionally includes the following interactions: executable instructions for creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, emailing, talking interfaces, playing digital video, playing digital music, and/or web browsing, etc., may be configured/stored in one or more processor-executable computer program products or readable storage media.
In the present embodiment, a control method of a DCDC converter operating in an electronic device of a vehicle is provided, and fig. 2 is a flowchart of a control method of a DCDC converter according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S10, obtaining the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information;
step S20, generating a target instruction set based on the working mode and the battery state information, wherein the target instruction set is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at different preset voltage output levels, and the preset voltage output levels are determined by the electrical network characteristics of the vehicle;
through the steps, a target instruction set is generated based on the working mode and the battery state information, the DCDC converter is controlled by the target instruction set to work the voltage in the power battery at different preset voltage output levels, the purpose of comprehensively determining the output voltage of the DCDC converter according to the working mode of the electric vehicle, the state of the storage battery and the state of the power battery is achieved, the DCDC converter is switched to adaptively adjust the output voltage according to the mode of the vehicle, the driving performance and the economical efficiency of the vehicle in different modes are improved, effective control over output of a low-voltage power supply of the vehicle is achieved by further combining the battery state information, the energy utility of the vehicle is fully improved, and the technical problem of low energy utility of the vehicle caused by single output control strategy of the existing DCDC converter is solved. In fact, by considering the working mode of the electric vehicle and the relevant state of the battery system of the electric vehicle, the DCDC converter reasonably outputs voltage, and reasonably plans the energy output of the 12V storage battery low-voltage power supply, the energy utility of the vehicle can be fully improved, and the stability and the reliability of the vehicle operation can be increased.
Fig. 3 shows a configuration structure diagram of an electric vehicle power system, which may apply a control method of the DCDC converter. The power system mainly comprises assembly components such as a driving motor, an inverter, a high-voltage power battery, a DCDC (direct current DC) converter, a gearbox, a low-voltage 12V storage battery and the like, and also comprises controllers corresponding to the assembly components, wherein the controllers comprise a Vehicle Control Unit (VCU), a Motor Controller (MCU), a Battery Management System (BMS), a vehicle Body Controller (BCM), a 12V storage battery monitoring system (EBS) and the like.
Fig. 4 shows an electric vehicle control system architecture and interface layout. The EBS detects the state of a low-voltage 12V storage battery and sends a state signal of the 12V storage battery to the BCM, the BCM sends the state signal of the 12V storage battery reported by the EBS to the VCU through the CAN network, the BMS sends the current state information of the high-voltage power battery to the VCU through the CAN network, the DCDC sends the current state information of the DCDC to the VCU through the CAN network, the VCU controls the output voltage of the DCDC by developing a DCDC intelligent energy management module and integrating the current running mode of the whole vehicle, the state of the 12V storage battery and the state of the high-voltage power battery, the VCU sends an output voltage instruction to the DCDC, and the DCDC adjusts the output voltage value according to the VCU instruction, so that the electric quantity requirement of the whole vehicle is met and the DCDC intelligent control output is realized. That is, the control system architecture described above uses the VCU as a core, and performs output control of the DCDC converter by integrating the vehicle mode and the battery state information, so that the output capability and energy efficiency of the low-voltage battery can be reasonably planned.
Further, the VCU is communicated with the BMS, the DCDC and the BCM through a CAN network, the key state, the alternating current and direct current charging states are connected with the VCU through a sensor hard wire, and the EBS is communicated with the BCM through a LIN wire after monitoring the state of a 12V low-voltage storage battery. The various signals involved in the control system are illustrated in the following table:
| serial number | Signal name | The network of which | Transmitting party | Receiving party |
| 1 | DCDC output current | CAN communication | DCDC | VCU |
| 2 | DCDC output voltage | CAN communication | DCDC | VCU |
| 3 | DCDC state | CAN communication | DCDC | VCU |
| 4 | DCDC temperature | CAN communication | DCDC | VCU |
| 5 | KeyState | Hard-wired connection | Key with a key body | VCU |
| 6 | HW_AC | Hard-wired connection | Charging machine | VCU |
| 7 | HW_DC | Hard-wired connection | Charging machine | VCU |
| 8 | Power battery SOC | CAN communication | BMS | VCU |
| 9 | 12V battery temperature | LIN communication | EBS | BCM |
| 10 | 12V storage battery SOC | LIN communication | EBS | BCM |
| 11 | 12V battery voltage | LIN communication | EBS | BCM |
| 12 | Current of 12V accumulator | LIN communication | EBS | BCM |
| 13 | 12V battery communication status | LIN communication | EBS | BCM |
| 14 | 12V battery fault condition | LIN communication | EBS | BCM |
| 15 | DCDC enable triggering | CAN communication | VCU | DCDC |
| 16 | DCDC output voltage request | CAN communication | VCU | DCDC |
In an alternative embodiment, after obtaining the operating mode of the vehicle and the battery state information, the DCDC control method includes: and acquiring a key state signal and vehicle charging information, and controlling the activation or the closing of the DCDC intelligent energy management module based on the key state signal and the vehicle charging information. The key state signal comprises opening and closing, and the vehicle charging information comprises a quick charging signal and a slow charging signal. Specifically, the DCDC intelligent energy management module function is activated when the VCU determines that any one of the following conditions is satisfied: (1) The vehicle key switch is in an On gear position, namely the key state signal KeyState = On; (2) The vehicle key switch is in the Start gear position, that is, the key state signal KeyState = Start; (3) The vehicle key switch is in the Off position, i.e. key status signal KeyState = Off, and the charging gun is plugged into the AC charging device, the slow charging HW _ AC signal wakes up the vehicle controller, i.e. HW _ AC = True. Further, when the VCU determines that the following conditions are all satisfied, the DCDC intelligent energy management module function exits: (1) The vehicle key switch is in the Off gear position, namely the key state signal KeyState = Off; (2) The charging gun is not inserted into an alternating current charging device, and a HW _ AC signal is slowly charged without waking up the vehicle controller, namely HW _ AC = False; (3) The charging gun is not inserted into the DC charging device, and the fast charging HW _ DC signal does not wake up the vehicle controller, i.e. HW _ DC = False. By adopting the technical scheme of the embodiment, the method for controlling activation and quitting of the DCDC intelligent management is realized by combining the key state signal and the charging signal, the user intention and the vehicle state are fully considered, and the DCDC intelligent energy management module can be closed when the DCDC is not required to be output and controlled.
Fig. 5 shows a schematic diagram of a mode management distribution of an electric vehicle. The working modes comprise a starting mode, a driving mode, a limp home mode, an energy recovery mode, a parking charging mode and a failure mode. When the vehicle is in different working modes, the VCU realizes the intelligent control voltage output of the DCDC by developing different control strategies.
In an alternative embodiment, the preset voltage output level is obtained from the characteristics of the vehicle network, for example, the DCDC preset voltage output level is divided into three levels, i.e., U1, U2 and U3, and according to different vehicle types, engineers can reasonably determine the specific value of the preset voltage output level according to other electrical assemblies of the vehicle, so that the DCDC preset voltage output is adapted to the electrical connection of the vehicle network and other assemblies. For example, U1=11v, U2=14v, U3=16v.
Optionally, the preset voltage output levels include a first output level and a second output level, an output voltage value of the first output level is greater than an output voltage value of the second output level, and the generating a target instruction set based on the operating mode and the battery state information includes: responding to the fact that the working mode is a starting mode, and obtaining storage battery state information, wherein the storage battery state information comprises the current charge value of the storage battery; under the condition that the current charge value is smaller than a preset charge lower limit value, generating a first control instruction in a target instruction set, wherein the first control instruction is used for controlling a DCDC converter to transmit the voltage in a power battery to a storage battery at a first output level; and under the condition that the current charge value is greater than the preset charge lower limit value and less than the preset charge upper limit value, generating a second control instruction in the target instruction set, wherein the second control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a second output level. Under the condition that the current charge value is smaller than the preset charge lower limit value, the storage battery can be rapidly charged by selecting the first output grade so as to meet the low-voltage power utilization requirement in preparation. And when the current charge value is greater than the preset charge lower limit value and less than the preset charge upper limit value, the second output level is selected, so that the power requirement in the starting mode can be preferentially ensured, and the drivability of the vehicle during starting is ensured.
Optionally, the first output level is U3, preferably 16V. The second output level is U1, preferably 11V. The preset output levels also include a third output level of U2, preferably 14V. Specifically, as shown in fig. 6, which is a flowchart illustrating the DCDC intelligent control method in the startup mode, after the VCU controls the DCDC enable trigger, the DCDC output voltage U = U2=14V may be controlled by default; when the 12V storage battery SOC is lower than the lower limit value, the VCU controls the DCDC output voltage U = U3=16V; when the 12V storage battery SOC is between the upper limit value and the lower limit value, the VCU controls the DCDC output voltage U = U1=11V; if the two situations do not occur, the DCDC output voltage U = U2=14V is continuously controlled.
Optionally, the preset voltage output levels further include a third output level, an output voltage value of the third output level is between an output voltage value of the first output level and an output voltage value of the second output level, and the target instruction set is generated based on the operating mode and the battery state information, and the method further includes: responding to the fact that the working mode is the driving mode, and obtaining storage battery state information, wherein the storage battery state information comprises a current charge value of the storage battery; under the condition that the current charge value is smaller than a preset charge lower limit value, generating a first control instruction; generating a second control instruction under the condition that the current charge value is greater than or equal to the preset charge upper limit value; and under the condition that the current charge value is greater than or equal to the preset lower charge limit value and less than the preset upper charge limit value, generating a third control instruction in the target instruction set, wherein the third control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a third output level. The third output level is U2, preferably 14V. Under the condition that the current charge value is smaller than the preset charge lower limit value, the storage battery is rapidly charged so as to meet the low-voltage requirement; when the current charge value is larger than or equal to the preset charge upper limit value, slowly charging the storage battery to enable the storage battery to approach charge balance and reduce; and under the condition that the current charge value is greater than or equal to the preset charge lower limit value and less than the preset charge upper limit value, the output control is carried out by adopting a third output grade, and the balance between the output of the storage battery and the output of the power battery can be considered. Specifically, fig. 7 shows a flowchart of the DCDC intelligent control method in the driving mode, in which the VCU controls the DCDC output voltage U = U3=16V when the initial 12V battery SOC is smaller than the lower limit value; when the initial 12V storage battery SOC is larger than the upper limit value, the VCU controls the DCDC output voltage U = U1=11V; when the initial 12V battery SOC is between the upper and lower limits, the VCU controls the DCDC output voltage U = U1=14V; when the 12V storage battery SOC is equal to the lower limit value, the VCU controls the DCDC output voltage U = U2=14V; when the 12V battery SOC is equal to the upper limit value, the VCU controls the DCDC output voltage U = U1=11V.
Optionally, the preset voltage output levels include a fourth output level, an output voltage value corresponding to the fourth output level is zero, and the target instruction set is generated based on the operating mode and the battery state information, and the method further includes: responding to the working mode to be a limp mode, and acquiring the state information of the storage battery, wherein the state information of the storage battery comprises the current charge value of the storage battery; under the condition that the current charge value is larger than the preset charge lower limit value, generating a fourth control instruction in the target instruction set, wherein the fourth control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a fourth output level; and generating a second control instruction under the condition that the current charge value is smaller than the preset charge lower limit value. As shown in fig. 8, a flowchart of the DCDC intelligent control method in the limp home mode is shown, wherein when the vehicle is in the limp home mode, when the charge value of the 12V battery is greater than the lower limit value, the VCU controls the DCDC enable to be turned off, so as to save the electric energy output of the high-voltage power battery and save the power consumption, so as to meet the limp home driving requirement of the driver; when the charge value of the 12V storage battery is smaller than the lower limit value, the VCU controls the DCDC output voltage U = U1=11V, the basic power consumption requirement of the whole vehicle low-voltage electric appliance is met, and meanwhile, the electric energy output of the high-voltage power battery is saved, so that the limp home running requirement of a driver is met.
Optionally, generating a target instruction set based on the operating mode and the battery status information further includes: responding to the fact that the working mode is a parking charging mode, and obtaining storage battery state information, wherein the storage battery state information comprises a current charge value of the storage battery; under the condition that the current charge value is larger than a preset charge lower limit value, generating a first control instruction; and generating a third control instruction when the current charge value is smaller than the preset charge lower limit value. Fig. 9 is a flowchart illustrating the DCDC intelligent control method in the parking mode, wherein when the 12V battery SOC is smaller than the lower limit value, the VCU controls the DCDC output voltage U = U3=16V so as to charge the 12V battery as soon as possible; when the SOC of the 12V storage battery is larger than the lower limit value, the VCU controls the output voltage U = U2=14V of the DCDC so as to meet the power consumption requirement of low-voltage electric appliances of the whole vehicle.
Optionally, generating the target instruction set based on the operating mode and the battery status information further includes: responding to the condition that the working mode is the energy recovery mode, and acquiring power battery state information, wherein the power battery state information comprises a high-voltage charge value of the power battery; generating a first control instruction under the condition that the high-voltage charge value is larger than a high-voltage discharge threshold value, wherein the high-voltage discharge threshold value is the highest charge value for keeping a safe working state during energy recovery of a preset power battery; and generating one of a second control instruction and a third control instruction when the high-voltage charge value is smaller than the high-voltage discharge threshold value. Fig. 9 shows a flowchart of the DCDC intelligent control method in the energy recovery mode, wherein when the vehicle enters the energy recovery mode from the driving mode, the DCDC output voltage may be U1 or U2, if the vehicle meets the energy recovery related condition, the energy recovery function of the vehicle will be triggered, at this time, the VCU determines whether the high-voltage power battery SOC is greater than a preset high-voltage discharging threshold value (e.g. 80%) by receiving the high-voltage power battery SOC sent by the BMS, and if the high-voltage power battery SOC is greater than the preset value, the VCU controls the DCDC output voltage U = U3=16V; when the energy recovery function of the vehicle is finished, the energy recovery mode is exited to enter the driving mode, or whether the SOC of the high-voltage power battery is smaller than a preset value (for example, 80%), and when one of the two conditions is met, the VCU controls the DCDC output voltage U = U1=11V or U = U2=14V (the output voltage needs to be determined according to the DCDC intelligent control method in the driving mode). By adopting the technical scheme of the embodiment, the electric quantity of the power battery is monitored, and the low-voltage storage battery is controlled to discharge quickly to realize normal operation of energy recovery when the electric quantity of the power battery deviates from balance.
Optionally, generating the target instruction set based on the operating mode and the battery status information further includes: in response to the fact that the working mode is a fault mode, obtaining storage battery state information and a fault type of the vehicle, wherein the storage battery state information comprises a temperature value of the storage battery, and the fault type comprises at least one of the following types: the storage battery detection system is abnormal, and the communication line is abnormal and is used for transmitting the storage battery state information to a vehicle body controller of the vehicle; generating a fourth control instruction under the condition that the current charge value is greater than the preset temperature value; and generating a third control command when the fault type is at least one of the storage battery detection system abnormity and the communication line abnormity. Fig. 10 shows a flow chart of the DCDC intelligent control method in the failure mode, wherein when the vehicle is in the aforementioned 5 modes, and the DCDC is in the corresponding intelligent energy management control process, if the EBS detects that the temperature of the 12V battery is greater than 70 degrees (calibratable value), the DCDC enable is controlled to be turned off. If the EBS detects that the temperature of the 12V storage battery is less than 70 degrees (a calibratable value), the DCDC intelligent management control is continuously maintained. When the EBS has a state failure or LIN communication is abnormal, the VCU controls the DCDC output voltage U = U2=14V. When the EBS state fault is resolved, the VCU resumes DCDC intelligent energy management control.
By adopting the technical scheme, a DCDC intelligent energy management control system architecture and an interface are designed, the running states of the electric automobile in different working modes are considered, different DCDC voltage control output methods are developed through DCDC intelligent energy management control strategy design in different working modes, effective control over output of a vehicle low-voltage power supply is achieved, energy utility of the vehicle can be fully improved, and therefore better driving performance and economical efficiency are provided for a user.
Fig. 12 is a block diagram of a control apparatus of a DCDC converter according to an embodiment of the present invention, as shown in fig. 12, the apparatus including: the obtaining module 51 is configured to obtain an operating mode of the vehicle and battery state information, where the operating mode includes at least one of: the battery state information comprises at least one of the following information: storage battery state information and power battery state information; a generating module 52 configured to generate a target instruction set based on the operating mode and the battery status information, the target instruction set being configured to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, wherein the preset voltage output levels are determined by the electrical network characteristics of the vehicle.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Embodiments of the present invention also provide a vehicle comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.
Optionally, for a specific example in this embodiment, reference may be made to the examples described in the above embodiment and optional implementation, and this embodiment is not described herein again.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit may be a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of controlling a DCDC converter, comprising:
acquiring the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information;
and generating a target instruction set based on the working mode and the battery state information, wherein the target instruction set is used for controlling a DCDC converter to transmit the voltage in the power battery to a storage battery at different preset voltage output levels, and the preset voltage output levels are determined by the electrical network characteristics of the vehicle.
2. The method of claim 1, wherein the preset voltage output levels comprise a first output level, a second output level, an output voltage value of the first output level being greater than an output voltage value of the second output level, and wherein generating a target instruction set based on the operating mode and the battery state information comprises:
responding to the working mode as the starting mode, and acquiring the storage battery state information, wherein the storage battery state information comprises the current charge value of the storage battery;
under the condition that the current charge value is smaller than a preset charge lower limit value, generating a first control instruction in the target instruction set, wherein the first control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at the first output level;
and under the condition that the current charge value is larger than the preset charge lower limit value and smaller than the preset charge upper limit value, generating a second control instruction in the target instruction set, wherein the second control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at the second output level.
3. The method of claim 2, wherein the preset voltage output levels further comprise a third output level having an output voltage value between the output voltage value of the first output level and the output voltage value of the second output level, wherein generating a target instruction set based on the operating mode and the battery state information further comprises:
responding to the working mode as the driving mode, and acquiring the storage battery state information;
generating the first control instruction under the condition that the current charge value is smaller than the preset charge lower limit value;
generating the second control instruction when the current charge value is greater than or equal to the preset charge upper limit value;
and under the condition that the current charge value is greater than or equal to the preset lower charge limit value and smaller than the preset upper charge limit value, generating a third control instruction in the target instruction set, wherein the third control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at a third output level.
4. The method of claim 3, wherein the preset voltage output level comprises a fourth output level having a corresponding output voltage value of zero, wherein generating a target instruction set based on the operating mode and the battery state information further comprises:
in response to the operating mode being the limp home mode, obtaining the battery state information;
under the condition that the current charge value is larger than the preset lower charge limit value, generating a fourth control instruction in the target instruction set, wherein the fourth control instruction is used for controlling the DCDC converter to transmit the voltage in the power battery to the storage battery at the fourth output level;
and generating the second control instruction under the condition that the current charge value is smaller than the preset charge lower limit value.
5. The method of claim 3, wherein generating a target instruction set based on the operating mode and the battery state information further comprises:
responding to the working mode as the parking charging mode, and acquiring the storage battery state information;
generating the first control instruction under the condition that the current charge value is larger than the preset charge lower limit value;
and generating the third control instruction when the current charge value is smaller than the preset charge lower limit value.
6. The method of claim 3, wherein generating a target instruction set based on the operating mode and the battery state information further comprises:
responding to the working mode as the energy recovery mode, and acquiring the state information of the power battery, wherein the state information of the power battery comprises a high-voltage charge value of the power battery;
generating the first control instruction under the condition that the high-voltage charge value is larger than a high-voltage discharge threshold value, wherein the high-voltage discharge threshold value is the highest charge value for keeping a safe working state during energy recovery of a preset power battery;
and generating one of the second control instruction and the third control instruction when the high-voltage charge value is smaller than the high-voltage discharge threshold value.
7. The method of claim 4, wherein generating a target instruction set based on the operating mode and the battery state information further comprises:
in response to the working mode being the fault mode, obtaining the battery state information and a fault type of the vehicle, wherein the battery state information comprises a temperature value of the battery, and the fault type comprises at least one of the following: detecting system abnormality of the storage battery and abnormality of a communication line, wherein the communication line is used for transmitting the storage battery state information to a vehicle body controller of the vehicle;
generating the fourth control instruction under the condition that the current charge value is greater than a preset temperature value;
and generating the third control command when the fault type is at least one of the battery detection system abnormality and the communication line abnormality.
8. A control device of a DCDC converter, comprising:
the acquisition module is used for acquiring the working mode and the battery state information of the vehicle, wherein the working mode comprises at least one of the following modes: the battery state information comprises at least one of the following information: storage battery state information and power battery state information;
a generating module configured to generate a target instruction set based on the operating mode and the battery state information, the target instruction set being configured to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, wherein the preset voltage output levels are determined by electrical network characteristics of the vehicle.
9. A computer-readable storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the method of any one of claims 1 to 7.
10. A vehicle comprising a memory and a processor, wherein the memory has stored therein a computer program, the processor being arranged to execute the computer program to perform the method of any of claims 1 to 7.
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| CN202211020637.8A CN115257458A (en) | 2022-08-24 | 2022-08-24 | Control method and control device of DCDC converter and vehicle |
| PCT/CN2023/112309 WO2024041395A1 (en) | 2022-08-24 | 2023-08-10 | Control method and control apparatus for dc-dc converter, and vehicle |
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| CN202211020637.8A CN115257458A (en) | 2022-08-24 | 2022-08-24 | Control method and control device of DCDC converter and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041395A1 (en) * | 2022-08-24 | 2024-02-29 | 中国第一汽车股份有限公司 | Control method and control apparatus for dc-dc converter, and vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730272A (en) * | 2016-02-04 | 2016-07-06 | 中国第一汽车股份有限公司 | Control method for low-voltage power source management system of new-energy vehicle |
| CN106080239A (en) * | 2016-07-01 | 2016-11-09 | 北京新能源汽车股份有限公司 | The low tension battery charge control method of electric vehicle and electric vehicle |
| CN108674188A (en) * | 2018-03-22 | 2018-10-19 | 吉利汽车研究院（宁波）有限公司 | Hybrid vehicle self power generation limping system, method and automobile |
| CN109450012A (en) * | 2018-10-15 | 2019-03-08 | 北京新能源汽车股份有限公司 | Voltage adjusting method, device and the vehicle of direct current transducer DCDC |
| CN114144327A (en) * | 2021-08-10 | 2022-03-04 | 宁波吉利罗佑发动机零部件有限公司 | DCDC output voltage control method and control system of hybrid vehicle |
| CN114379370A (en) * | 2022-02-14 | 2022-04-22 | 中国第一汽车股份有限公司 | Control method and device for vehicle limp mode, vehicle and storage medium |
| CN114932840A (en) * | 2022-06-06 | 2022-08-23 | 中国第一汽车股份有限公司 | Control method and device of power management system, storage medium and processor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101500080B1 (en) * | 2013-06-04 | 2015-03-06 | 현대자동차주식회사 | Method for controlling LDC in regenerative braking of eco-friendly vehicle |
| KR101836586B1 (en) * | 2015-12-14 | 2018-04-20 | 현대자동차주식회사 | Method and system for controlling charging of low-voltage battery |
| CN205554092U (en) * | 2016-04-14 | 2016-09-07 | 罗伯特·博世有限公司 | DCDC converter, battery energy management system and hybrid vehicle |
| CN108515961B (en) * | 2018-03-29 | 2020-04-21 | 吉利汽车研究院（宁波）有限公司 | DCDC control method and system for 48V hybrid power system |
| CN114156974A (en) * | 2021-11-12 | 2022-03-08 | 沙龙智行科技有限公司 | Charging control method and device for low-voltage storage battery, central electronic control module and medium |
| CN115257458A (en) * | 2022-08-24 | 2022-11-01 | 中国第一汽车股份有限公司 | Control method and control device of DCDC converter and vehicle |
-
2022
- 2022-08-24 CN CN202211020637.8A patent/CN115257458A/en active Pending
-
2023
- 2023-08-10 WO PCT/CN2023/112309 patent/WO2024041395A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730272A (en) * | 2016-02-04 | 2016-07-06 | 中国第一汽车股份有限公司 | Control method for low-voltage power source management system of new-energy vehicle |
| CN106080239A (en) * | 2016-07-01 | 2016-11-09 | 北京新能源汽车股份有限公司 | The low tension battery charge control method of electric vehicle and electric vehicle |
| CN108674188A (en) * | 2018-03-22 | 2018-10-19 | 吉利汽车研究院（宁波）有限公司 | Hybrid vehicle self power generation limping system, method and automobile |
| CN109450012A (en) * | 2018-10-15 | 2019-03-08 | 北京新能源汽车股份有限公司 | Voltage adjusting method, device and the vehicle of direct current transducer DCDC |
| CN114144327A (en) * | 2021-08-10 | 2022-03-04 | 宁波吉利罗佑发动机零部件有限公司 | DCDC output voltage control method and control system of hybrid vehicle |
| CN114379370A (en) * | 2022-02-14 | 2022-04-22 | 中国第一汽车股份有限公司 | Control method and device for vehicle limp mode, vehicle and storage medium |
| CN114932840A (en) * | 2022-06-06 | 2022-08-23 | 中国第一汽车股份有限公司 | Control method and device of power management system, storage medium and processor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041395A1 (en) * | 2022-08-24 | 2024-02-29 | 中国第一汽车股份有限公司 | Control method and control apparatus for dc-dc converter, and vehicle |
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| Publication number | Publication date |
|---|---|
| WO2024041395A1 (en) | 2024-02-29 |
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