Boost charging control method, vehicle controller and readable storage medium

Abstract

The invention provides a boost charging control method, a vehicle controller and a readable storage medium, and the method comprises the steps: carrying out the boost charging control based on the battery voltage data collected by a main voltage sensor in a main path boost charging mode process; whether the main voltage sensor breaks down or not is judged in real time based on battery voltage data collected by the main voltage sensor; and if it is judged that the main circuit voltage sensor breaks down, switching to a redundant circuit boost charging mode so as to carry out boost charging control based on battery voltage data collected by the redundant circuit voltage sensor. According to the invention, after the voltage sensor fault of the boost charging circuit is detected, boost charging control can be continuously completed, so that the charging robustness is improved, and rapid and safe charging experience is provided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to a boost charging control method, a vehicle controller and a readable storage medium. BACKGROUND

[0002] The boost charging technology is a key technology in the development of electric vehicles, which adapts to the high-voltage demand of electric vehicle batteries by increasing the output voltage of the charging pile, so as to realize fast charging. The boost charging function is a key technology of the electric drive system, and the three-phase bridge arm of the multiplex inverter and the three-phase winding of the motor form a typical Boost circuit. The boost charging pile voltage is controlled by the three-phase bridge arm to charge the power battery. The boost module is arranged between the charging pile and the power battery, which can increase the voltage of the power battery and realize dynamic adjustment of the motor system operating voltage within a certain range. The main advantages of this technology include voltage optimization of motor system output torque control and motor system efficiency, which improves the efficiency of the system working condition.

[0003] However, in the boost charging system of electric vehicles, bus voltage failure is a problem that needs attention, because it directly affects the safety and efficiency of charging. Here, bus voltage failure refers to the fault diagnosed by the bus voltage sensor.

[0004] At present, there is still a lot of room for improvement and optimization in the boost control strategy and diagnosis method, mainly as follows:

[0005] (1) In terms of boost control strategy, the boost charging system reuses the electric drive controller and the motor, which improves the system complexity. Any failure of a component (for example, bus voltage sensor diagnosis failure) will cause the boost charging to stop. The motor controller has multiple signal sampling, and if any sampling signal fails, the boost charging will stop output, and the user cannot charge.

[0006] (2) Boost heat dissipation scheme. The boost circuit generates heat when working, and the heat loss is mainly caused by voltage ripple. The loss of the motor is large, especially when charging at high power, the heat generation may be quite large, and an effective heat dissipation solution is needed to increase the power of the vehicle cooling system, which will increase the cost to some extent.

[0007] It should be noted that the information disclosed in the background section of the present application is only intended to deepen the understanding of the general background of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. SUMMARY

[0008] The object of the present invention is to provide a boost charging control method, a vehicle controller and a readable storage medium, which can continue to complete boost charging control after detecting a voltage sensor failure in the boost charging circuit to improve charging robustness, thereby providing a fast and safe charging experience.

[0009] To achieve the above object, the present invention provides a boost charging control method, comprising:

[0010] During the main circuit boost charging mode, boost charging control is performed based on the battery voltage data collected by the main circuit voltage sensor;

[0011] Determining in real time whether the main voltage sensor is faulty based on battery voltage data collected by the main voltage sensor;

[0012] If it is determined that the main line voltage sensor fails, the redundant line voltage boost charging mode is switched to perform boost charging control based on the battery voltage data collected by the redundant line voltage sensor.

[0013] Optionally, the determining whether the main voltage sensor is faulty based on the battery voltage data collected by the main voltage sensor in real time includes:

[0014] Comparing the battery voltage data collected by the main voltage sensor with the corresponding charging voltage instruction data in real time;

[0015] If the absolute value of the difference between the battery voltage data collected by the main voltage sensor and the corresponding charging voltage command data is greater than a first preset threshold, it is determined whether the main voltage sensor is faulty based on the battery voltage data collected by the main voltage sensor, the battery voltage data collected by the redundant voltage sensor, and the battery voltage data collected by the battery management control system.

[0016] Optionally, if the absolute value of the difference between the battery voltage data collected by the main voltage sensor and the battery voltage data collected by the battery management and control system is greater than a second preset threshold and the absolute value of the difference between the battery voltage data collected by the redundant voltage sensor and the battery voltage data collected by the battery management and control system is less than the second preset threshold, it is determined that the main voltage sensor is faulty.

[0017] Optionally, during the main line boost charging mode, the battery voltage data collected by the main line voltage sensor, the battery voltage data collected by the redundant line voltage sensor, and the battery voltage data collected by the battery management and control system are compared in real time.

[0018] Optionally, when it is determined that the absolute value of the difference between the battery voltage data collected by the main voltage sensor and the corresponding charging voltage instruction data is greater than a first preset threshold, the main boost charging mode is immediately exited.

[0019] Optionally, the charging power in the redundant path boost charging mode is less than the charging power in the main path boost charging mode.

[0020] Optionally, during the main circuit boost charging mode and the redundant circuit boost charging mode, a staggered phase control mode is adopted for boost charging control.

[0021] Optionally, after switching to the redundant path boost charging mode, the boost charging control method provided by the present invention further includes:

[0022] Comparing the battery voltage data collected by the redundant circuit voltage sensor with the corresponding charging voltage instruction data in real time;

[0023] If the absolute value of the difference between the battery voltage data collected by the redundant circuit voltage sensor and the corresponding charging voltage instruction data is greater than a first preset threshold, the redundant circuit boost charging mode is immediately exited.

[0024] To achieve the above-mentioned object, the present invention further provides a vehicle controller, comprising a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the boost charging control method described above is implemented.

[0025] To achieve the above-mentioned object, the present invention further provides a readable storage medium, wherein the readable storage medium stores a computer program, and when the computer program is executed by a processor, the boost charging control method described above is implemented.

[0026] Compared with the prior art, the boost charging control method, vehicle controller, and readable storage medium provided by the present invention have the following beneficial effects:

[0027] The boost charging control method provided by the present invention performs boost charging control based on the battery voltage data collected by the main voltage sensor during the main boost charging mode, and determines in real time whether the main voltage sensor is faulty based on the battery voltage data collected by the main voltage sensor. If it is determined that the main voltage sensor is faulty, it switches to the redundant boost charging mode to continue to perform boost charging control based on the battery voltage data collected by the redundant voltage sensor. It can be seen that the present invention can continue to complete boost charging control after detecting a voltage sensor failure in the boost charging circuit, so as to improve charging robustness and provide a fast and safe charging experience. In addition, the present invention adopts a staggered phase control mode for boost charging control during both the main boost charging mode and the redundant boost charging mode, which can effectively suppress the ripple current amplitude of the motor neutral line, thereby effectively reducing electromagnetic interference and the heat generated by the charging system.

[0028] Since the vehicle controller and readable storage medium provided by the present invention belong to the same inventive concept as the boost charging control method provided by the present invention, the vehicle controller and readable storage medium provided by the present invention have at least all the beneficial effects of the boost charging control method provided by the present invention. For details, please refer to the relevant description above, so the beneficial effects of the vehicle controller and readable storage medium provided by the present invention will not be described one by one here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flowchart of a boost charging control method provided in one embodiment of the present invention;

[0030] Figure 2 A structural block diagram of a boost charging circuit provided in one embodiment of the present invention;

[0031] Figure 3 A schematic block diagram of a vehicle controller according to one embodiment of the present invention;

[0032] The description of the accompanying drawings is as follows:

[0033] Boost module-110; inverter-111; motor-112; main circuit voltage sensor-120; redundant circuit voltage sensor-130;

[0034] Processor 210 ; communication interface 220 ; memory 230 ; communication bus 240 . DETAILED DESCRIPTION

[0035] The boost charging control method, vehicle controller and readable storage medium proposed in the present invention are further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose provided by the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the conditions for the implementation of the present invention. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention when the effect produced by the present invention and the purpose that can be achieved are the same or similar.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element. The singular forms "a", "an" and "the" include plural objects, the term "or" is generally used in a sense including "and / or", the term "several" is generally used in a sense including "at least one", and the term "at least two" is generally used in a sense including "two or more". In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features.

[0037] In addition, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0038] The core idea of ​​the present invention is to provide a boost charging control method, a vehicle controller and a readable storage medium, which can continue to complete boost charging control after detecting a voltage sensor failure in the boost charging circuit to improve charging robustness and thus provide a fast and safe charging experience.

[0039] It should be noted that the boost charging control method provided by the present invention can be applied to the vehicle controller provided by the present invention, and the vehicle controller can be applied to new energy vehicles, including passenger vehicles such as sports utility vehicles (SUVs), buses, trucks, and various commercial vehicles, and including hybrid vehicles, pure electric vehicles, plug-in hybrid electric vehicles, etc.

[0040] To realize the above idea, the present invention provides a boost charging control method, please refer to Figure 1 , which is a flow chart of a boost charging control method provided by one embodiment of the present invention. Figure 1 As shown, the boost charging control method provided by the present invention includes the following steps:

[0041] Step S100: During the main circuit boost charging mode, boost charging control is performed based on battery voltage data collected by the main circuit voltage sensor.

[0042] Step S200: determining in real time based on the battery voltage data collected by the main voltage sensor whether the main voltage sensor is faulty.

[0043] If it is determined that the main voltage sensor is faulty, step S300 is executed;

[0044] Step S300: Switch to the redundant circuit boost charging mode to perform boost charging control based on the battery voltage data collected by the redundant circuit voltage sensor.

[0045] It can be seen that the present invention can continue to complete boost charging control after detecting a voltage sensor failure in the boost charging circuit, so as to improve charging robustness and provide a fast and safe charging experience.

[0046] Specifically, please refer to Figure 2 , which is a structural block diagram of a boost charging circuit provided by one embodiment of the present invention. Figure 2 As shown, the boost charging circuit includes a boost module 110, the main line voltage sensor 120, and the redundant line voltage sensor 130. The boost module 110 includes an inverter 111 and a motor 112. It should be noted that the specific structure of the inverter 111 can be referred to relevant content in related fields known to those skilled in the art and will not be further described here.

[0047] Furthermore, during the main boost charging mode, the switching states of the various power switches (e.g., IGBTs) in the inverter 111 can be adjusted based on the battery voltage data collected by the main voltage sensor 120, thereby adjusting the output voltage (battery voltage). By adopting a pulse width modulation (PWM) control strategy, the output voltage (battery voltage) is controlled by changing the PWM duty cycle. Throughout the boost charging process, the battery voltage is monitored in real time by the main voltage sensor 120, and charging parameters are adjusted as needed.

[0048] Similarly, during redundant circuit boost charging mode, the switching states of the power switches (e.g., IGBTs) in inverter 111 can be adjusted based on the battery voltage data collected by redundant circuit voltage sensor 130, thereby adjusting the output voltage (battery voltage). By adopting a pulse width modulation (PWM) control strategy, the output voltage (battery voltage) is controlled by varying the PWM duty cycle. Throughout the boost charging process, the battery voltage is monitored in real time by redundant circuit voltage sensor 130, and charging parameters are adjusted as needed.

[0049] In some exemplary embodiments, the data acquisition accuracy of the main voltage sensor 120 is higher than that of the redundant voltage sensor 130. During normal operation of the boost charging circuit, the battery voltage data collected by the main voltage sensor 120 is always used for boost charging control, and the battery voltage data collected by the redundant voltage sensor 130 is only used for boost charging control when the main voltage sensor 120 fails. Therefore, the data acquisition accuracy of the redundant voltage sensor 130 can be set to be lower than that of the main voltage sensor 120, effectively reducing costs.

[0050] In some exemplary embodiments, determining whether the main voltage sensor 120 is faulty based on the battery voltage data collected by the main voltage sensor 120 in real time includes:

[0051] Comparing the battery voltage data collected by the main voltage sensor 120 with the corresponding charging voltage instruction data in real time;

[0052] If the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the corresponding charging voltage command data is greater than a first preset threshold, it is determined whether the main voltage sensor 120 is faulty based on the battery voltage data collected by the main voltage sensor 120, the battery voltage data collected by the redundant voltage sensor 130, and the battery voltage data collected by the battery management and control system.

[0053] Thus, by first comparing the battery voltage data collected by the main line voltage sensor 120 with the corresponding charging voltage command data, and when it is determined that the absolute value of the difference between the battery voltage data collected by the line voltage sensor and the corresponding charging voltage command data is greater than a first preset threshold, the battery voltage data collected by the main line voltage sensor 120, the battery voltage data collected by the redundant line voltage sensor 130, and the battery voltage data collected by the battery management and control system are further used to determine whether the main line voltage sensor 120 has failed. This allows for a more accurate determination of whether the main line voltage sensor 120 has failed. It should be noted that, as will be understood by those skilled in the art, the present invention does not limit the specific value of the first preset threshold, and the specific value of the first preset threshold can be set according to actual needs.

[0054] Specifically, the charging voltage command data can be determined based on the motor 112 winding temperature, charging current, and charging voltage differential. Furthermore, excessively high motor 112 winding temperature will limit the charging current, which directly affects the rate of change of the charging voltage command curve. The smaller the charging current is limited, the slower the charging voltage command curve rises. The size of the charging voltage differential will affect the limited charging current, which in turn affects the rate of change of the charging voltage command curve. The smaller the charging voltage differential, the greater the charging current limit, thereby limiting the rate of change of the charging voltage command curve.

[0055] In some exemplary embodiments, if the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the battery voltage data collected by the battery management and control system is greater than a second preset threshold and the absolute value of the difference between the battery voltage data collected by the redundant voltage sensor 130 and the battery voltage data collected by the battery management and control system is less than the second preset threshold, it is determined that the main voltage sensor 120 has a fault.

[0056] Because the probability of any two of the main voltage sensor 120, the redundant voltage sensor 130, and the battery management and control system failing simultaneously is relatively low, it is possible to accurately determine whether the main voltage sensor 120 has failed based on whether the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the battery voltage data collected by the battery management and control system is greater than a second preset threshold, and the absolute value of the difference between the battery voltage data collected by the redundant voltage sensor 130 and the battery voltage data collected by the battery management and control system is less than the second preset threshold. It should be noted that, as will be understood by those skilled in the art, the present invention does not limit the specific value of the second preset threshold, and the specific value of the second preset threshold can be set according to actual needs.

[0057] In some exemplary embodiments, during the main boost charging mode, the battery voltage data collected by the main voltage sensor 120, the battery voltage data collected by the redundant voltage sensor 130, and the battery voltage data collected by the battery management and control system are compared in real time. Thus, by comparing the battery voltage data collected by the main voltage sensor 120, the battery voltage data collected by the redundant voltage sensor 130, and the battery voltage data collected by the battery management and control system in real time during the main boost charging mode, it is possible to quickly determine whether the main voltage sensor 120 has failed when the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the corresponding charging voltage command data is greater than a first preset threshold. Consequently, when the main voltage sensor 120 fails, the system can quickly switch to the redundant boost charging mode, performing boost charging control based on the battery voltage data collected by the redundant voltage sensor 130, thereby effectively ensuring that charging function and performance are not degraded.

[0058] In some exemplary embodiments, the main boost charging mode is immediately exited when it is determined that the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the corresponding charging voltage command data is greater than a first preset threshold. Thus, by immediately exiting the main boost charging mode when it is determined that the absolute value of the difference between the battery voltage data collected by the main voltage sensor 120 and the corresponding charging voltage command data is greater than the first preset threshold, it is possible to ensure safety during the boost charging process by taking necessary protective measures (e.g., cutting off the current, stopping charging, or adjusting charging parameters).

[0059] In some exemplary embodiments, the charging power in the redundant boost charging mode is lower than the charging power in the main boost charging mode. Thus, by setting the charging power in the redundant boost charging mode to be lower than the charging power in the main boost charging mode, the safety risks caused by a malfunction of the redundant voltage sensor 130 can be reduced, thereby further improving the safety of the boost charging process.

[0060] In some exemplary embodiments, a staggered phase control mode is used for boost charging control during both the main circuit boost charging mode and the redundant circuit boost charging mode. Thus, by using a staggered phase control mode for boost charging control during both the main circuit boost charging mode and the redundant circuit boost charging mode, the amplitude of the ripple current in the neutral line of the motor 112 can be effectively suppressed, thereby effectively reducing electromagnetic interference and heat generation of the charging system.

[0061] Specifically, staggered phase control can be achieved by staggering the switching timing of the power switch tubes of the three-phase bridge arms in the inverter 111. For more information about staggered phase control, please refer to the content of related fields known to those skilled in the art, and will not be elaborated here.

[0062] In some exemplary embodiments, after switching to the redundant path boost charging mode, the boost charging control method provided by the present invention further includes:

[0063] Comparing the battery voltage data collected by the redundant line voltage sensor 130 with the corresponding charging voltage instruction data in real time;

[0064] If the absolute value of the difference between the battery voltage data collected by the redundant circuit voltage sensor 130 and the corresponding charging voltage instruction data is greater than a first preset threshold, the redundant circuit boost charging mode is exited.

[0065] Therefore, after entering the redundant circuit boost charging mode, the battery voltage data collected by the redundant circuit voltage sensor 130 is compared with the corresponding charging voltage instruction data in real time, and when the absolute value of the difference between the battery voltage data collected by the redundant circuit voltage sensor 130 and the corresponding charging voltage instruction data is greater than the first preset threshold, the redundant circuit boost charging mode is exited and charging can be stopped, thereby further improving safety.

[0066] Based on the same inventive concept, the present invention also provides a vehicle controller, please refer to Figure 3 , which is a block diagram of a vehicle controller provided by one embodiment of the present invention. Figure 3 As shown, the vehicle controller includes a processor 210 and a memory 230. The memory 230 stores a computer program. When the computer program is executed by the processor 210, it implements the boost charging control method described above. Since the vehicle controller provided by the present invention and the boost charging control method provided by the present invention are based on the same inventive concept, the vehicle controller provided by the present invention has at least all the beneficial effects of the boost charging control method provided by the present invention. For details, please refer to the relevant description above. Therefore, the beneficial effects of the vehicle controller provided by the present invention will not be detailed here.

[0067] like Figure 3 As shown, the vehicle controller also includes a communication interface 220 and a communication bus 240, wherein the processor 210, the communication interface 220, and the memory 230 communicate with each other via the communication bus 240. The communication bus 240 includes, but is not limited to, a CAN bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not mean that there is only one bus or one type of bus. The communication interface 220 is used for communication between the above-mentioned vehicle controller (such as the motor controller) and other vehicle controllers (such as the vehicle controller, suspension controller, etc., not shown in the figure). The communication bus 240 connects the above-mentioned vehicle controller (such as the motor controller) and other vehicle controllers (such as the vehicle controller, suspension controller, etc., not shown in the figure) and other dispersed nodes into a closed-loop system, allowing each vehicle controller to communicate and transmit data in multiple working states (parking state, charging state, starting state, running state, vehicle forward and reverse state, regenerative braking state, mechanical braking state, general fault state, major fault state), thereby realizing the control function of the vehicle.

[0068] The processor 210 referred to in the present invention may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor. The processor 210 is the control center of the vehicle controller and connects various parts of the entire vehicle controller using various interfaces and lines.

[0069] The memory 230 can be used to store the computer program. The processor 210 implements various functions of the vehicle controller by running or executing the computer program stored in the memory 230 and calling the data stored in the memory 230. The memory 230 may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable memory (PROM), electrically programmable memory (EPROM), electrically erasable programmable memory (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, random access memory is available in many forms, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous random access memory (SDRAM), double data rate synchronous random access memory (DDRSDRAM), enhanced synchronous random access memory (ESDRAM), synchronous link (Synchlink) dynamic random access memory (SLDRAM), memory bus (Rambus) direct random access memory (RDRAM), direct memory bus dynamic random access memory (DRDRAM), and memory bus dynamic random access memory (RDRAM), etc.

[0070] The present invention also provides a readable storage medium having a computer program stored therein. When executed by a processor, the computer program can implement the boost charging control method described above. Since the readable storage medium provided by the present invention and the boost charging control method provided by the present invention are based on the same inventive concept, the readable storage medium provided by the present invention has at least all the beneficial effects of the boost charging control method provided by the present invention. For details, please refer to the relevant description above, and therefore, the beneficial effects of the readable storage medium provided by the present invention will not be elaborated here.

[0071] The readable storage medium provided by the present invention can adopt any combination of one or more computer-readable media. The readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, a system, device or component of electricity, magnetism, light, electromagnetic, infrared or semiconductor, or any combination thereof. More specific examples (non-exhaustive enumeration) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer hard disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this article, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0072] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination thereof.

[0073] In summary, compared with the prior art, the boost charging control method, vehicle controller, and readable storage medium provided by the present invention have the following advantages:

[0074] The present invention performs boost charging control based on the battery voltage data collected by the main voltage sensor 120 during the main boost charging mode, and determines in real time whether the main voltage sensor 120 is faulty based on the battery voltage data collected by the main voltage sensor 120. If it is determined that the main voltage sensor 120 is faulty, it switches to the redundant boost charging mode to continue to perform boost charging control based on the battery voltage data collected by the redundant voltage sensor 130. It can be seen that the present invention can continue to complete boost charging control after detecting a voltage sensor failure in the boost charging circuit, so as to improve charging robustness and provide a fast and safe charging experience. In addition, the present invention adopts a staggered phase control mode for boost charging control during both the main boost charging mode and the redundant boost charging mode, which can effectively suppress the ripple current amplitude of the neutral line of the motor 112, thereby effectively reducing electromagnetic interference and the heat generated by the charging system.

[0075] It should be noted that the computer program code for performing the operations of the present invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0076] It should be noted that the devices and methods disclosed in the embodiments of this document may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of the devices, methods, and computer program products according to the various embodiments of this document. In this regard, each box in the flowchart or block diagram may represent a module, program, or part of the code, which contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes may actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions. In addition, the functional modules in the various embodiments of this document may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0077] The above description is merely a description of preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes or modifications made by persons skilled in the art based on the above disclosure are within the scope of protection of the present invention. Obviously, various modifications and variations may be made by persons skilled in the art without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the present invention and its equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A boost charging control method, characterized in that: include: During the main circuit boost charging mode, boost charging control is performed based on the battery voltage data collected by the main circuit voltage sensor; Determining in real time whether the main voltage sensor is faulty based on battery voltage data collected by the main voltage sensor; If it is determined that the main line voltage sensor fails, the redundant line voltage boost charging mode is switched to perform boost charging control based on the battery voltage data collected by the redundant line voltage sensor.

2. The boost charging control method according to claim 1, wherein: The determining whether the main voltage sensor is faulty based on the battery voltage data collected by the main voltage sensor in real time includes: Comparing the battery voltage data collected by the main voltage sensor with the corresponding charging voltage instruction data in real time; If the absolute value of the difference between the battery voltage data collected by the main voltage sensor and the corresponding charging voltage command data is greater than a first preset threshold, it is determined whether the main voltage sensor is faulty based on the battery voltage data collected by the main voltage sensor, the battery voltage data collected by the redundant voltage sensor, and the battery voltage data collected by the battery management control system.

3. The boost charging control method according to claim 2, wherein: If the absolute value of the difference between the battery voltage data collected by the main line voltage sensor and the battery voltage data collected by the battery management and control system is greater than a second preset threshold and the absolute value of the difference between the battery voltage data collected by the redundant line voltage sensor and the battery voltage data collected by the battery management and control system is less than the second preset threshold, it is determined that the main line voltage sensor has a fault.

4. The boost charging control method according to claim 3, wherein: During the main line boost charging mode, the battery voltage data collected by the main line voltage sensor, the battery voltage data collected by the redundant line voltage sensor, and the battery voltage data collected by the battery management and control system are compared in real time.

5. The boost charging control method according to claim 2, wherein: When it is determined that the absolute value of the difference between the battery voltage data collected by the main voltage sensor and the corresponding charging voltage instruction data is greater than a first preset threshold, the main boost charging mode is immediately exited.

6. The boost charging control method according to claim 1, wherein: The charging power in the redundant path boost charging mode is less than the charging power in the main path boost charging mode.

7. The boost charging control method according to claim 1, wherein: During the main circuit boost charging mode and the redundant circuit boost charging mode, the staggered phase control mode is adopted for boost charging control.

8. The boost charging control method according to claim 1, wherein: After switching to the redundant path boost charging mode, the control method further includes: Comparing the battery voltage data collected by the redundant circuit voltage sensor with the corresponding charging voltage instruction data in real time; If the absolute value of the difference between the battery voltage data collected by the redundant circuit voltage sensor and the corresponding charging voltage instruction data is greater than a first preset threshold, the redundant circuit boost charging mode is immediately exited.

9. A vehicle controller, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the boost charging control method according to any one of claims 1 to 8 is implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores a computer program, and when the computer program is executed by a processor, the boost charging control method according to any one of claims 1 to 8 is implemented.

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