WO2024041395A1

WO2024041395A1 - Control method and control apparatus for dc-dc converter, and vehicle

Info

Publication number: WO2024041395A1
Application number: PCT/CN2023/112309
Authority: WO
Inventors: 伍庆龙
Original assignee: 中国第一汽车股份有限公司
Priority date: 2022-08-24
Filing date: 2023-08-10
Publication date: 2024-02-29
Also published as: CN115257458A

Abstract

Disclosed in the present application are a control method and control apparatus for a DC-DC converter, and a vehicle. The method comprises: acquiring a working mode and battery state information of a vehicle, wherein the working mode comprises at least one of the following: a start mode, a driving mode, a limp-home mode, a parking and charging mode, an energy recovery mode and a fault mode, and the battery state information comprises at least one of the following: storage battery state information and power battery state information; and generating a target instruction set on the basis of the working mode and the battery state information, wherein the target instruction set is used for controlling a DC-DC converter to transmit the voltage in a power battery into a storage battery at different preset voltage output levels, which are determined by means of the characteristics of an electrical network of the vehicle. The present application solves the technical problem of the low energy utility of a vehicle caused by the single output control strategy of existing DC-DC converters.

Description

DCDC转化器的控制方法、控制装置及车辆Control method, control device and vehicle for DCDC converter

技术领域Technical field

本申请涉及DCDC转化器控制技术领域，具体而言，涉及一种DCDC转化器的控制方法、控制装置及车辆。本申请要求于2022年8月24日提交至中国国家知识产权局、申请号为202211020637.8、发明名称为“DCDC转化器的控制方法、控制装置及车辆”的专利申请的优先权。The present application relates to the technical field of DCDC converter control. Specifically, it relates to a control method, a control device and a vehicle for a DCDC converter. This application requests the priority of the patent application submitted to the State Intellectual Property Office of China on August 24, 2022, with the application number 202211020637.8 and the invention title "Control method, control device and vehicle of DCDC converter".

背景技术Background technique

在能源紧张与环境污染双重压力不断增加的背景下，新能源汽车的研发已受到了各大汽车厂商的重视，并且市场上已经出现了较多的不同类型的电动汽车。纯电动汽车的动力***主要是由驱动电机和动力电池组成，通过整车控制和智能能量管理技术可以实现整车性能的进一步提升。由于纯电动汽车具有高低压电池，即高压动力电池和12V蓄电池，而且相比于传统汽车，电动汽车的行驶模式更为多样化，如果不能有效地进行车辆的电源输出能量管理，势必会影响到整车的驾驶性、动力性和经济性表现。因此，如何智能、有效地进行不同模式下的电源输出能量管理是目前要解决的关键问题之一。Against the background of increasing dual pressures of energy shortage and environmental pollution, the research and development of new energy vehicles has attracted the attention of major automobile manufacturers, and many different types of electric vehicles have appeared on the market. The power system of pure electric vehicles is mainly composed of drive motors and power batteries. Through vehicle control and intelligent energy management technology, vehicle performance can be further improved. Since pure electric vehicles have high and low voltage batteries, that is, high-voltage power batteries and 12V batteries, and compared with traditional vehicles, electric vehicles have more diverse driving modes. If the vehicle's power output energy cannot be effectively managed, it will inevitably affect The driving performance, power and economical performance of the vehicle. Therefore, how to intelligently and effectively manage power output energy in different modes is one of the key issues to be solved.

现有技术中通过采用由动力电池作为电源，通过DCDC转换器，利用渐降电流法给辅助电池充电，在行驶过程中采用单一的控制方法和策略，没有基于电动车辆不同的运行模式进行智能控制，导致DCDC转换器的输出不能随车况和驾驶员的需求的变化进行有效调整，进而降低了车辆的能量效用，也无法保证车辆在工作过程中的驾驶性和经济性。In the existing technology, the power battery is used as the power source, and the DCDC converter is used to charge the auxiliary battery using the gradient current method. A single control method and strategy is used during driving, and there is no intelligent control based on different operating modes of the electric vehicle. As a result, the output of the DCDC converter cannot be effectively adjusted as the vehicle conditions and driver's needs change, thereby reducing the energy utility of the vehicle and failing to ensure the drivability and economy of the vehicle during operation.

针对上述的问题，目前尚未提出有效的解决方案。In response to the above problems, no effective solution has yet been proposed.

申请内容Application content

本申请实施例提供了一种DCDC转化器的控制方法、控制装置及车辆，以至少解决现有的DCDC转换器的输出控制策略单一导致的车辆的能量效用低的技术问题。Embodiments of the present application provide a control method, a control device, and a vehicle for a DCDC converter to at least solve the technical problem of low energy efficiency of the vehicle caused by a single output control strategy of the existing DCDC converter.

根据本申请实施例的一个方面，提供了一种DCDC转化器的控制方法，包括：获取车辆的工作模式、电池状态信息，其中，工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；基于工作模式和电池状态信息生成目标指令集，目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，预置电压输出等级由车辆的电气网络特性确定得到。According to one aspect of the embodiment of the present application, a method for controlling a DCDC converter is provided, including: obtaining the working mode and battery status information of the vehicle, wherein the working mode includes at least one of the following: starting mode, driving mode, limp mode , parking charging mode, energy recovery mode, fault mode, the battery status information includes at least one of the following: battery status information, power battery status information; based on the working mode and battery status information Generate a target instruction set, which is used to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, where the preset voltage output level is determined by the vehicle's electrical network characteristics.

可选地，预置电压输出等级包括第一输出等级、第二输出等级，第一输出等级的输出电压值大于第二输出等级的输出电压值，基于工作模式和电池状态信息生成目标指令集，包括：响应于工作模式为启动模式，获取蓄电池状态信息，其中，蓄电池状态信息包括蓄电池的当前荷电值；在当前荷电值小于预设荷电下限值的情况下，生成目标指令集中的第一控制指令，第一控制指令用于控制DCDC转化器将动力电池内的电压以第一输出等级传输至蓄电池中；在当前荷电值大于预设荷电下限值且小于预设荷电上限的情况下，生成目标指令集中的第二控制指令，第二控制指令用于控制DCDC转化器将动力电池内的电压以第二输出等级传输至蓄电池中。Optionally, the preset voltage output level includes a first output level and a second output level, the output voltage value of the first output level is greater than the output voltage value of the second output level, and the target instruction set is generated based on the working mode and battery status information, Including: in response to the working mode being the startup mode, obtaining battery status information, where the battery status information includes the current charge value of the battery; when the current charge value is less than the preset lower charge limit value, generating the target instruction set The first control instruction is used to control the DCDC converter to transmit the voltage in the power battery to the battery at the first output level; when the current charge value is greater than the preset charge lower limit and less than the preset charge When the upper limit is reached, a second control instruction in the target instruction set is generated. The second control instruction is used to control the DCDC converter to transmit the voltage in the power battery to the battery at the second output level.

可选地，预置电压输出等级还包括第三输出等级，第三输出等级的输出电压值位于第一输出等级的输出电压值和第二输出等级的输出电压值之间，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为驱动模式，获取蓄电池状态信息；在当前荷电值小于预设荷电下限值的情况下，生成第一控制指令；在当前荷电值大于或等于预设荷电上限值的情况下，生成第二控制指令；在当前荷电值大于或等于预设荷电下限值，且小于预设荷电上限的情况下，生成目标指令集中的第三控制指令，第三控制指令用于控制DCDC转化器将动力电池内的电压以第三输出等级传输至蓄电池中。Optionally, the preset voltage output level also includes a third output level, the output voltage value of the third output level is between the output voltage value of the first output level and the output voltage value of the second output level, based on the working mode and battery The state information generation target instruction set also includes: obtaining battery state information in response to the working mode being the driving mode; generating a first control instruction when the current charge value is less than the preset lower charge limit value; When the current charge value is greater than or equal to the preset upper charge limit value, the second control instruction is generated; when 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, the target is generated The third control instruction in the instruction set is used to control the DCDC converter to transmit the voltage in the power battery to the storage battery at the third output level.

可选地，预置电压输出等级包括第四输出等级，第四输出等级对应的输出电压值为零，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为跛行模式，获取蓄电池状态信息；在当前荷电值大于预设荷电下限值的情况下，生成目标指令集中的第四控制指令，第四控制指令用于控制DCDC转化器将动力电池内的电压以第四输出等级传输至蓄电池中；在当前荷电值小于预设荷电下限值的情况下，生成第二控制指令。Optionally, the preset voltage output level includes a fourth output level, and the output voltage value corresponding to the fourth output level is zero. Generating a target instruction set based on the working mode and battery status information also includes: in response to the working mode being the limp mode, Obtain the battery status information; when the current charge value is greater than the preset lower charge limit value, generate the fourth control instruction in the target instruction set. The fourth control instruction is used to control the DCDC converter to convert the voltage in the power battery to the first The four output levels are transmitted to the battery; when the current charge value is less than the preset lower charge limit value, a second control command is generated.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为停车充电模式，获取蓄电池状态信息；在当前荷电值大于预设荷电下限值的情况下，生成第一控制指令；在当前荷电值小于预设荷电下限值的情况下，生成第三控制指令。Optionally, generating a target instruction set based on the working mode and battery status information also includes: obtaining battery status information in response to the working mode being the parking charging mode; when the current charge value is greater than the preset lower charge limit value, A first control instruction is generated; when the current charge value is less than a preset lower charge limit value, a third control instruction is generated.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为能量回收模式，获取动力电池状态信息，其中，动力电池状态信息包括动力电池的高压荷电值；在高压荷电值大于高压放电门限值的情况下，生成第一控制指令，其中，高压放电门限值为预设的动力电池能量回收时保持安全工作状态的最高荷电值；在高压荷电值小于高压放电门限值的情况下，生成第二控制指令和第三控制指令中的一个。Optionally, generating the target instruction set based on the working mode and battery status information also includes: in response to the working mode being the energy recovery mode, obtaining the power battery status information, where the power battery status information includes the high-voltage charge value of the power battery; When the high-voltage charge value is greater than the high-voltage discharge threshold value, the first control instruction is generated, where the high-voltage discharge threshold value is the preset highest charge value that maintains a safe working state during energy recovery of the power battery; When the high-voltage charge value is less than the high-voltage discharge threshold, one of the second control instruction and the third control instruction is generated.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为故障模式，获取蓄电池状态信息、车辆的故障类型，其中，蓄电池状态信息包括蓄电池的温度值，故障类型包括如下至少之一：蓄电池检测***异常、通信线路异常，通信线路用于将蓄电池状态信息传输至车辆的车身控制器中；在当前荷电值大于预设温度值的情况下，生成第四控制指令；在故障类型为蓄电池检测***异常、通信线路异常中的至少一个时，生成第三控制指令。Optionally, generating a target instruction set based on the working mode and battery status information also includes: in response to the working mode being the fault mode, obtaining the battery status information and the fault type of the vehicle, where the battery status information includes the temperature value of the battery, the fault type Including at least one of the following: battery detection system abnormality, communication line abnormality, the communication line is used to transmit battery status information to the vehicle body controller; when the current charge value is greater than the preset temperature value, a fourth control is generated Instruction; when the fault type is at least one of battery detection system abnormality and communication line abnormality, generate a third control instruction.

根据本申请实施例的另一方面，还提供了一种DCDC转化器的控制装置，包括：获取模块，用于获取车辆的工作模式、电池状态信息，其中，工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；生成模块，用于基于工作模式和电池状态信息生成目标指令集，目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，预置电压输出等级由车辆的电气网络特性确定得到。According to another aspect of the embodiment of the present application, a control device for a DCDC converter is also provided, including: an acquisition module for acquiring the working mode and battery status information of the vehicle, wherein the working mode includes at least one of the following: start mode, drive mode, limp mode, parking charging mode, energy recovery mode, failure mode, the battery status information includes at least one of the following: battery status information, power battery status information; a generation module for generating based on the working mode and battery status information The target instruction set is used to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, where the preset voltage output level is determined by the vehicle's electrical network characteristics.

根据本申请实施例的又一方面，还提供了一种计算机可读存储介质，计算机可读存储介质包括存储的程序，其中，在程序运行时控制计算机可读存储介质所在设备执行前述任一项中的方法。According to another aspect of the embodiment of the present application, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any of the foregoing items. method in.

根据本申请实施例的又一方面，还提供了一种车辆，包括存储器和处理器，存储器中存储有计算机程序，处理器被设置为运行计算机程序以执行前述任一项中的方法。According to yet another aspect of the embodiment of the present application, a vehicle is also provided, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to perform any of the foregoing methods.

在本申请实施例中，采用获取车辆的工作模式、电池状态信息的方式，通过基于工作模式和电池状态信息生成目标指令集并且利用目标指令集控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级工作，达到了结合电动车辆的工作模式、蓄电池的状态、动力电池的状态综合确定DCDC转化器的输出电压的目的，使DCDC转化器根据车辆的模式切换自适应调节输出电压，从而提高了车辆在不同模式下的驾驶性和经济性，并进一步结合电池状态信息，实现车辆低压电源输出的有效控制，充分提高了车辆的能量效用，进而解决了现有的DCDC转换器的输出控制策略单一导致的车辆的能量效用低技术问题。In the embodiment of the present application, the working mode and battery status information of the vehicle are obtained, a target instruction set is generated based on the working mode and battery status information, and the target instruction set is used to control the DCDC converter to convert the voltage in the power battery to different values. The preset voltage output level work achieves the purpose of comprehensively determining the output voltage of the DCDC converter based on the working mode of the electric vehicle, the state of the battery, and the state of the power battery, so that the DCDC converter can adaptively adjust the output voltage according to the mode switching of the vehicle. This improves the vehicle's drivability and economy in different modes, and further combines battery status information to achieve effective control of the vehicle's low-voltage power supply output, fully improving the vehicle's energy utility, thereby solving the problem of the existing DCDC converter output The technical problem of low energy efficiency of vehicles caused by a single control strategy.

附图说明Description of drawings

此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture middle:

图1是根据本申请其中一可选实施例的DCDC转化器的控制方法的计算机终端的硬件结构框图；Figure 1 is a hardware structure block diagram of a computer terminal according to a method for controlling a DCDC converter according to an optional embodiment of the present application;

图2是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 2 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图3是根据本申请其中一可选实施例的车辆动力***的结构示意图；Figure 3 is a schematic structural diagram of a vehicle power system according to an optional embodiment of the present application;

图4是根据本申请其中一可选实施例的DCDC转化器的控制***的架构示意图；Figure 4 is an architectural schematic diagram of a control system of a DCDC converter according to an optional embodiment of the present application;

图5是根据本申请其中一可选实施例的车辆的模式管理分布示意图；Figure 5 is a schematic diagram of the mode management distribution of a vehicle according to an optional embodiment of the present application;

图6是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 6 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图7是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 7 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图8是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 8 is a flow chart of a control method of a DCDC converter according to one of the optional embodiments of the present application;

图9是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 9 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图10是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 10 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图11是根据本申请其中一可选实施例的DCDC转化器的控制方法的流程图；Figure 11 is a flow chart of a control method of a DCDC converter according to an optional embodiment of the present application;

图12是根据本申请其中一可选实施例的DCDC转化器的控制装置的模块框图。Figure 12 is a module block diagram of a control device of a DCDC converter according to an optional embodiment of the present application.

具体实施方式Detailed ways

为了使本技术领域的人员更好地理解本申请方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本申请保护的范围。In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of protection of this application.

需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、***、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。It should be noted that the terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus that encompasses a series of steps or units and need not be limited to those explicitly listed. Those steps or elements may instead include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

现有技术中，DCDC转换器通常采用固定输出或渐降电流策略为蓄电池充电，该控制方法单一，无法基于车辆的不同运行模式进行输出控制，因此导致车辆难以保证在不同场景下的驾驶性和舒适性。为使得DCDC转换器工作更加高效、可靠，有必要对DCDC转换器能量管理策略进行研究和设计。In the existing technology, DCDC converters usually use fixed output or gradually decreasing current strategy to charge the battery. The control method is single and cannot perform output control based on the different operating modes of the vehicle. Therefore, it is difficult for the vehicle to ensure the driving performance and comfort in different scenarios. In order to make the DCDC converter work more efficiently and reliably, it is necessary to research and design the energy management strategy of the DCDC converter.

根据本申请其中一实施例，提供了一种DCDC转化器的控制方法的实施例，需要说明的是，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机***中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。According to one embodiment of the present application, an embodiment of a control method for a DCDC converter is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions. are performed, and, although a logical order is shown in the flowchart diagrams, in some cases the steps shown or described may be performed in a different order than herein.

该方法实施例可以在车辆中包含存储器和处理器的电子装置或者类似的运算装置中执行。以运行在车辆的电子装置上为例，如图1所示，车辆的电子装置可以包括一个或多个处理器102(处理器可以包括但不限于中央处理器(CPU)、图形处理器(GPU)、数字信号处理(DSP)芯片、微处理器(MCU)、可编程逻辑器件(FPGA)、神经网络处理器(NPU)、张量处理器(TPU)、人工智能(AI)类型处理器等的处理装置)和用于存储数据的存储器104。可选地，上述汽车的电子装置还可以包括用于通信功能的传输设备106、输入输出设备108以及显示器110。本领域普通技术人员可以理解，图1所示的结构仅为示意，其并不对上述车辆的电子装置的结构造成限定。例如，车辆的电子装置还可包括比上述结构描述更多或者更少的组件，或者具有与上述结构描述不同的配置。This method embodiment may be executed in an electronic device including a memory and a processor or a similar computing device in the vehicle. Taking the electronic device running on the vehicle as an example, as shown in FIG. 1 , the electronic device of the vehicle may include one or more processors 102 (the processor may include but is not limited to a central processing unit (CPU), a graphics processing unit (GPU) ), digital signal processing (DSP) chips, microprocessors (MCU), programmable logic devices (FPGA), neural network processors (NPU), tensor processors (TPU), artificial intelligence (AI) type processors, etc. processing device) and a memory 104 for storing data. Optionally, the above-mentioned electronic device of the automobile may also include a transmission device 106 for communication functions, an input and output device 108, and a display 110. Persons of ordinary skill in the art can understand that the structure shown in FIG. 1 is only illustrative and does not limit the structure of the electronic device of the vehicle. For example, the electronic device of the vehicle may also include more or less components than the above structural description, or have a different configuration than the above structural description.

存储器104可用于存储计算机程序，例如，应用软件的软件程序以及模块，如本申请实施例中的DCDC转化器的控制方法对应的计算机程序，处理器102通过运行存储在存储器104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述的DCDC转化器的控制方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至移动终端。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the control method of the DCDC converter in the embodiment of the present application. The processor 102 runs the computer program stored in the memory 104, Thereby executing various functional applications and data processing, that is, realizing the above control method of the DCDC converter. 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 relative to the processor 102, and these remote memories may be connected to the mobile terminal through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

传输设备106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括移动终端的通信供应商提供的无线网络。在一个实例中，传输设备106包括一个网络适配器(Network Interface Controller，简称为NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置可以为射频(Radio Frequency，简称为RF)模块，其用于通过无线方式与互联网进行通讯。Transmission device 106 is used to receive or send data via a network. Specific examples of the above-mentioned network 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 (Network Interface Controller, NIC for short), which 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 to communicate with the Internet wirelessly.

显示器110可以为例如触摸屏式的液晶显示器(LCD)。该液晶显示器可使得用户能够与移动终端的用户界面进行交互。在一些实施例中，上述移动终端具有图形用户界面(GUI)，用户可以通过触摸触敏表面上的手指接触和/或手势来与GUI进行人机交互，此处的人机交互功能可选的包括如下交互：创建网页、绘图、文字处理、制作电子文档、游戏、视频会议、即时通信、收发电子邮件、通话界面、播放数字视频、播放数字音乐和/或网络浏览等，用于执行上述人机交互功能的可执行指令被配置/存储在一个或多个处理器可执行的计算机程序产品或可读存储介质中。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 the user interface of the mobile terminal. In some embodiments, the above-mentioned mobile terminal has a graphical user interface (GUI), and the user can interact with the GUI through finger contact and/or gestures on the touch-sensitive surface. Interaction, the optional human-computer interaction functions here include the following interactions: creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interface, playing digital videos, playing digital music and/or web browsing, etc., executable instructions for performing the above human-computer interaction functions are configured/stored in one or more processor-executable computer program products or readable storage media.

本实施例中提供了一种运行于上述车辆的电子装置的DCDC转化器的控制方法，图2是根据本申请其中一实施例的DCDC转化器的控制方法的流程图，如图2所示，该流程包括如下步骤：This embodiment provides a control method for a DCDC converter running on the electronic device of the above-mentioned vehicle. Figure 2 is a flow chart of a control method for a DCDC converter according to one embodiment of the present application. As shown in Figure 2, The process includes the following steps:

步骤S10，获取车辆的工作模式、电池状态信息，其中，工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；Step S10, obtain the working mode and battery status information of the vehicle. The working mode includes at least one of the following: starting mode, driving mode, limp mode, parking charging mode, energy recovery mode, and fault mode. The battery status information includes at least one of the following. 1: Battery status information, power battery status information;

步骤S20，基于工作模式和电池状态信息生成目标指令集，目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，预置电压输出等级由车辆的电气网络特性确定得到；Step S20: Generate a target instruction set based on the working mode and battery status information. The target instruction set is used to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, where the preset voltage output level Determined by the vehicle’s electrical network characteristics;

通过上述步骤，获取车辆的工作模式、电池状态信息的方式，通过基于工作模式和电池状态信息生成目标指令集并且利用目标指令集控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级工作，达到了结合电动车辆的工作模式、蓄电池的状态、动力电池的状态综合确定DCDC转化器的输出电压的目的，使DCDC转化器根据车辆的模式切换自适应调节输出电压，从而提高了车辆在不同模式下的驾驶性和经济性，并进一步结合电池状态信息，实现车辆低压电源输出的有效控制，充分提高了车辆的能量效用，进而解决了现有的DCDC转换器的输出控制策略单一导致的车辆的能量效用低的技术问题。实际上，通过考虑电动车辆的工作模式和电动车辆的电池***的相关状态，使得DCDC转换器合理进行电压输出，合理规划12V蓄电池低压电源的能量输出，能够充分提高车辆的能量效用，增加车辆运行的稳定性和可靠性。Through the above steps, the vehicle's working mode and battery status information are obtained, a target instruction set is generated based on the working mode and battery status information, and the target instruction set is used to control the DCDC converter to output the voltage in the power battery at different preset voltages. Level work achieves the purpose of comprehensively determining the output voltage of the DCDC converter based on the working mode of the electric vehicle, the state of the battery, and the state of the power battery, so that the DCDC converter adaptively adjusts the output voltage according to the mode switching of the vehicle, thereby improving the vehicle's The drivability and economy in different modes are further combined with battery status information to achieve effective control of the vehicle's low-voltage power output, fully improving the vehicle's energy utility and thus solving the problem caused by the single output control strategy of the existing DCDC converter. The technical problem of low energy efficiency of vehicles. In fact, by considering the working mode of the electric vehicle and the relevant status of the battery system of the electric vehicle, the DCDC converter can reasonably perform voltage output and reasonably plan the energy output of the 12V battery low-voltage power supply, which can fully improve the energy utility of the vehicle and increase vehicle operation. stability and reliability.

如图3示出了一种电动车辆动力***构型结构图，该电动车辆动力***可应用DCDC转换器的控制方法。动力***主要是由驱动电机、逆变器、高压动力电池、DCDC直流转换器、变速箱、低压12V蓄电池等总成部件构成，同时还有与各总成部件相对应的控制器，控制器包括了整车控制器(VCU)、电机控制器(MCU)、电池管理***(BMS)、车身控制器(BCM)、12V蓄电池监测***(EBS)等。Figure 3 shows a structural diagram of an electric vehicle power system. The electric vehicle power system can apply the control method of the DCDC converter. The power system is mainly composed of drive motors, inverters, high-voltage power batteries, DCDC converters, gearboxes, low-voltage 12V batteries and other assembly components. There are also controllers corresponding to each assembly component. The controller includes It includes vehicle controller (VCU), motor controller (MCU), battery management system (BMS), body controller (BCM), 12V battery monitoring system (EBS), etc.

如图4示出了一种电动车辆控制***架构和接口设计图。EBS通过检测低压12V蓄电池状态，并将12V蓄电池的状态信号发送给BCM，BCM通过CAN网络把EBS上报的12V蓄电池状态信号发送给VCU，BMS通过CAN网络把当前的高压动力电池状态信息发送给VCU，DCDC通过CAN网络把当前的DCDC状态信息发送到VCU， VCU通过开发DCDC智能能量管理模块，综合当前整车运行模式、12V蓄电池状态、高压动力电池状态，进行控制DCDC输出电压，VCU向DCDC发送输出电压指令，DCDC根据VCU指令调整输出电压值，满足整车电量需求，实现DCDC智能控制输出。也即是说，上述控制***架构以VCU为核心，通过综合车辆模式、电池状态信息进行DCDC转换器的输出控制，可以合理规划低压蓄电池的输出能力和能效。Figure 4 shows an electric vehicle control system architecture and interface design diagram. EBS detects the status of the low-voltage 12V battery and sends the 12V battery status signal to the BCM. The BCM sends the 12V battery status signal reported by the EBS to the VCU through the CAN network. The BMS sends the current high-voltage power battery status information to the VCU through the CAN network. , DCDC sends the current DCDC status information to VCU through the CAN network, VCU develops the DCDC intelligent energy management module to control the DCDC output voltage by integrating the current vehicle operating mode, 12V battery status, and high-voltage power battery status. VCU sends output voltage instructions to DCDC, and DCDC adjusts the output voltage value according to the VCU instructions to meet the overall requirements. According to the vehicle power demand, DCDC intelligent control output is realized. That is to say, the above-mentioned control system architecture takes the VCU as the core and controls the output of the DCDC converter by integrating vehicle mode and battery status information, so that the output capability and energy efficiency of the low-voltage battery can be reasonably planned.

进一步地，VCU与BMS、DCDC、BCM之间通过CAN网络进行通信，钥匙状态、交流和直流充电状态与VCU之间通过传感器硬线连接，EBS通过监测12V低压蓄电池状态，然后通过LIN线与BCM进行通信。控制***涉及的各类信号说明如下表所示：
Furthermore, VCU communicates with BMS, DCDC, and BCM through the CAN network. The key status, AC and DC charging status and VCU are connected through hard wires through sensors. The EBS monitors the 12V low-voltage battery status and then communicates with the BCM through the LIN line. communicate. The various signals involved in the control system are described in the following table:

在一个可选的实施例中，获取车辆的工作模式、电池状态信息之后，DCDC的控制方法该包括：获取钥匙状态信号、车辆充电信息，基于钥匙状态信号、车辆充电信息控制DCDC智能能量管理模块的激活或关闭。其中，钥匙状态信号包括开启和关闭，车辆充电信息包括快充信号和慢充信号。具体地，当VCU判断以下任一条件满足时，DCDC智能能量管理模块功能激活：(1)车辆钥匙开关处于On挡位置，即钥匙状态信号KeyState＝On；(2)车辆钥匙开关处于Start挡位置，即钥匙状态信号KeyState＝Start；(3)车辆钥匙开关处于Off挡位置，即钥匙状态信号KeyState＝Off，并且充电枪***交流充电装置，慢充HW_AC信号唤醒整车控制器，即HW_AC＝True。进一步地，当VCU判断以下条件全部满足时，DCDC智能能量管理模块功能退出：(1)车辆钥匙开关处于Off挡位置，即钥匙状态信号KeyState＝Off；(2)充电枪没有***交流充电装置，慢充HW_AC信号未唤醒整车控制器，即HW_AC＝False；(3)充电枪没有***直流充电装置，快充HW_DC信号未唤醒整车控制器，即HW_DC＝False。采用本实施例的技术方案，通过结合钥匙状态信号和充电信号，实现了DCDC智能管理激活和退出控制方法，该方法充分考虑用户意图和车辆状态，在无需对DCDC进行输出控制时，可关闭DCDC智能能量管理模块。In an optional embodiment, after obtaining the vehicle's working mode and battery status information, the DCDC control method includes: obtaining the key status signal and vehicle charging information, and controlling the DCDC intelligent energy management module based on the key status signal and vehicle charging information. activation or deactivation. Among them, the key status signal includes on and off, and the vehicle charging information includes fast charging signal and slow charging signal. Specifically, when the VCU determines that any of the following conditions are met, the DCDC intelligent energy management module function is activated: (1) The vehicle key switch is in the On position, that is, the key status signal KeyState = On; (2) The vehicle key switch is in the Start position , that is, the key status signal KeyState = Start; (3) The vehicle key switch is in the Off position, that is, the key status signal KeyState = Off, and the charging gun is inserted into the AC charging device, and the slow charging HW_AC signal wakes up the vehicle controller, that is, HW_AC = True . Further, when the VCU determines that the following conditions are all met, the DCDC intelligent energy management module function exits: (1) The vehicle key is turned on The switch is in the Off position, that is, the key status signal KeyState = Off; (2) the charging gun is not plugged into the AC charging device, and the slow charging HW_AC signal does not wake up the vehicle controller, that is, HW_AC = False; (3) the charging gun is not plugged into the DC charging device device, the fast charging HW_DC signal does not wake up the vehicle controller, that is, HW_DC=False. Adopting the technical solution of this embodiment, by combining the key status signal and the charging signal, the DCDC intelligent management activation and exit control method is realized. This method fully considers the user intention and vehicle status, and can turn off the DCDC when there is no need to output control of the DCDC. Intelligent energy management module.

如图5示出了电动车辆的模式管理分布示意图。工作模式包括启动模式、驱动模式、跛行模式、能量回收模式、停车充电模式、故障模式。当车辆处于不同的工作模式下，VCU通过开发不同的控制策略，实现DCDC的智能控制电压输出。Figure 5 shows a schematic diagram of the mode management distribution of electric vehicles. Working modes include startup mode, drive mode, limp mode, energy recovery mode, parking charging mode, and failure mode. When the vehicle is in different working modes, VCU develops different control strategies to achieve intelligent control voltage output of DCDC.

在一个可选的实施例中，预置电压输出等级由车辆的整车网络特性得到，举例来说，DCDC预置电压输出等级分为U1、U2和U3共三个等级，根据不同车型，工程人员可根据车辆的其他电气总成合理确定预置电压输出等级的具体数值，以使DCDC预置电压输出与车辆整体的电气网络及其他总成的电气连接相适应。举例来说，U1＝11V，U2＝14V，U3＝16V。In an optional embodiment, the preset voltage output level is obtained from the vehicle network characteristics. For example, the DCDC preset voltage output level is divided into three levels: U1, U2 and U3. According to different models, engineering Personnel can reasonably determine the specific value of the preset voltage output level based on other electrical assemblies of the vehicle so that the DCDC preset voltage output is compatible with the vehicle's overall electrical network and the electrical connections of other assemblies. For example, U1=11V, U2=14V, U3=16V.

可选地，预置电压输出等级包括第一输出等级、第二输出等级，第一输出等级的输出电压值大于第二输出等级的输出电压值，基于工作模式和电池状态信息生成目标指令集，包括：响应于工作模式为启动模式，获取蓄电池状态信息，其中，蓄电池状态信息包括蓄电池的当前荷电值；在当前荷电值小于预设荷电下限值的情况下，生成目标指令集中的第一控制指令，第一控制指令用于控制DCDC转化器将动力电池内的电压以第一输出等级传输至蓄电池中；在当前荷电值大于预设荷电下限值且小于预设荷电上限的情况下，生成目标指令集中的第二控制指令，第二控制指令用于控制DCDC转化器将动力电池内的电压以第二输出等级传输至蓄电池中。在当前荷电值小于预设荷电下限值的情况下，选用第一输出等级可使蓄电池快速充电，以预备满足低压用电需求。在当前荷电值大于预设荷电下限值且小于预设荷电上限的情况下，选用第二输出等级，可优先保证启动模式下的动力需求，保证车辆启动时的驾驶性。Optionally, the preset voltage output level includes a first output level and a second output level, the output voltage value of the first output level is greater than the output voltage value of the second output level, and the target instruction set is generated based on the working mode and battery status information, Including: in response to the working mode being the startup mode, obtaining battery status information, where the battery status information includes the current charge value of the battery; when the current charge value is less than the preset lower charge limit value, generating the target instruction set The first control instruction is used to control the DCDC converter to transmit the voltage in the power battery to the battery at the first output level; when the current charge value is greater than the preset charge lower limit and less than the preset charge When the upper limit is reached, a second control instruction in the target instruction set is generated. The second control instruction is used to control the DCDC converter to transmit the voltage in the power battery to the battery at the second output level. When the current charge value is less than the preset lower charge limit, selecting the first output level can quickly charge the battery to prepare to meet low-voltage power demand. When the current charge value is greater than the preset lower charge limit and less than the preset upper charge limit, selecting the second output level can prioritize the power demand in the startup mode and ensure the drivability of the vehicle when starting.

可选地，第一输出等级为U3，优选16V。第二输出等级为U1，优选11V。预设输出等级还包括第三输出等级为U2，优选14V。具体地，如图6示出了启动模式下DCDC智能控制方法的流程图，VCU控制DCDC使能触发之后，即可默认控制DCDC输出电压U＝U2＝14V；当12V蓄电池SOC低于下限值，VCU控制DCDC输出电压U＝U3＝16V；当12V蓄电池SOC位于上下限值之间，VCU控制DCDC输出电压U＝U1＝11V；如果上述两类情况没有出现，则继续控制DCDC输出电压U＝U2＝14V。Optionally, the first output level is U3, preferably 16V. The second output level is U1, preferably 11V. The preset output level also includes a third output level of U2, preferably 14V. Specifically, Figure 6 shows the flow chart of the DCDC intelligent control method in startup mode. After the VCU controls the DCDC enable trigger, the DCDC output voltage can be controlled by default U = U2 = 14V; when the 12V battery SOC is lower than the lower limit value , VCU controls the DCDC output voltage U=U3=16V; when the 12V battery SOC is between the upper and lower limits, the VCU controls the DCDC output voltage U=U1=11V; if the above two conditions do not occur, continue to control the DCDC output voltage U= U2=14V.

可选地，预置电压输出等级还包括第三输出等级，第三输出等级的输出电压值位于第一输出等级的输出电压值和第二输出等级的输出电压值之间，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为驱动模式，获取蓄电池状态信息，其中，蓄电池状态信息包括蓄电池的当前荷电值；在当前荷电值小于预设荷电下限值的情况下，生成第一控制指令；在当前荷电值大于或等于预设荷电上限值的情况下，生成第二控制指令；在当前荷电值大于或等于预设荷电下限值，且小于预设荷电上限的情况下，生成目标指令集中的第三控制指令，第三控制指令用于控制DCDC转化器将动力电池内的电压以第三输出等级传输至蓄电池中。第三输出等级为U2，优选14V。在当前荷电值小于预设荷电下限值的情况下，快速对蓄电池进行充电以使蓄电池满足低压需求；在当前荷电值大于或等于预设荷电上限值的情况下，缓速对蓄电池进行充电以使蓄电池接近荷电平衡并减小；在当前荷电值大于或等于预设荷电下限值，且小于预设荷电上限的情况下，采用第三输出等级进行输出控制，可兼顾蓄电池输出和动力电池输出之间的平衡。具体地，如图7示出了驱动模式下DCDC智能控制方法的流程图，其中，当初始12V蓄电池SOC小于下限值，VCU控制DCDC输出电压U＝U3＝16V；当初始12V蓄电池SOC大于上限值，VCU控制DCDC输出电压U＝U1＝11V；当初始12V蓄电池SOC位于上下限值之间，VCU控制DCDC输出电压U＝U1＝14V；当12V蓄电池SOC等于下限值，VCU控制DCDC输出电压U＝U2＝14V；当12V蓄电池SOC等于上限值，VCU控制DCDC输出电压U＝U1＝11V。Optionally, the preset voltage output level also includes a third output level, and the output voltage value of the third output level is between the output voltage value of the first output level and the output voltage value of the second output level, based on the working mode and electrical voltage. The target instruction set for generating battery status information also includes: in response to the working mode being the driving mode, obtaining battery status information, wherein the battery status information includes the current charge value of the battery; when the current charge value is less than the preset lower charge limit value When the current charge value is greater than or equal to the preset upper charge limit value, a second control instruction is generated; when the current charge value is greater than or equal to the preset lower charge limit value , and is less than the preset charge upper limit, generate a third control instruction in the target instruction set. The third control instruction is used to control the DCDC converter to transmit the voltage in the power battery to the battery at the third output level. The third output level is U2, preferably 14V. When the current charge value is less than the preset lower charge limit value, the battery is quickly charged so that the battery can meet the low voltage requirement; when the current charge value is greater than or equal to the preset charge upper limit value, the battery is charged slowly. Charge the battery so that the battery is close to the charge balance and decreases; when the current charge value is greater than or equal to the preset lower limit of charge and less than the preset upper limit of charge, the third output level is used for output control , which can take into account the balance between battery output and power battery output. Specifically, Figure 7 shows the flow chart of the DCDC intelligent control method in driving mode, in which when the initial 12V battery SOC is less than the lower limit value, the VCU controls the DCDC output voltage U=U3=16V; when the initial 12V battery SOC is greater than the upper limit value limit, VCU controls the DCDC output voltage U=U1=11V; when the initial 12V battery SOC is between the upper and lower limits, VCU controls the DCDC output voltage U=U1=14V; when the 12V battery SOC is equal to the lower limit, VCU controls the DCDC output Voltage U=U2=14V; when the 12V battery SOC is equal to the upper limit value, VCU controls the DCDC output voltage U=U1=11V.

可选地，预置电压输出等级包括第四输出等级，第四输出等级对应的输出电压值为零，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为跛行模式，获取蓄电池状态信息，其中，蓄电池状态信息包括蓄电池的当前荷电值；在当前荷电值大于预设荷电下限值的情况下，生成目标指令集中的第四控制指令，第四控制指令用于控制DCDC转化器将动力电池内的电压以第四输出等级传输至蓄电池中；在当前荷电值小于预设荷电下限值的情况下，生成第二控制指令。如图8示出了跛行模式下DCDC智能控制方法的流程图，其中，车辆处于跛行模式，当12V蓄电池荷电值大于下限值时，VCU控制DCDC使能关闭，节省高压动力电池电能输出，节省耗电，以便满足驾驶员的跛行回家行驶需求；当12V蓄电池荷电值小于下限值时，VCU控制DCDC输出电压U＝U1＝11V，在满足整车低压用电器的基本耗电量需求的同时，节省高压动力电池电能输出，以便满足驾驶员的跛行回家行驶需求。Optionally, the preset voltage output level includes a fourth output level, and the output voltage value corresponding to the fourth output level is zero. Generating a target instruction set based on the working mode and battery status information also includes: in response to the working mode being the limp mode, Obtain battery status information, where the battery status information includes the current charge value of the battery; when the current charge value is greater than the preset lower charge limit value, generate a fourth control instruction in the target instruction set, and the fourth control instruction is The DCDC converter is controlled to transmit the voltage in the power battery to the storage battery at the fourth output level; when the current charge value is less than the preset lower charge limit value, a second control command is generated. Figure 8 shows the flow chart of the DCDC intelligent control method in limp mode. The vehicle is in limp mode. When the charge value of the 12V battery is greater than the lower limit value, the VCU controls the DCDC enable to turn off to save the high-voltage power battery energy output. Save power consumption to meet the driver's limp home driving needs; when the 12V battery charge value is less than the lower limit, VCU controls the DCDC output voltage U=U1=11V to meet the basic power consumption of the vehicle's low-voltage electrical appliances At the same time, the electric energy output of the high-voltage power battery is saved to meet the driver's limp home driving needs.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为停车充电模式，获取蓄电池状态信息，其中，蓄电池状态信息包括蓄电池的当前荷电值；在当前荷电值大于预设荷电下限值的情况下，生成第一控制指令；在当前荷电值小于预设荷电下限值的情况下，生成第三控制指令。如图9示出了停车模式下DCDC智能控制方法的流程图，其中，当12V蓄电池SOC小于下限值时，VCU控制DCDC输出电压U＝U3＝16V，以便尽快给12V蓄电池充电；当12V蓄电池SOC大于下限值时，VCU控制DCDC输出电压U＝U2＝14V，以便满足整车低压用电器的耗电量需求。Optionally, generating a target instruction set based on the working mode and battery status information also includes: in response to the working mode being the parking charging mode, obtaining battery status information, wherein the battery status information includes the current charge value of the battery; When the current charge value is greater than the preset lower charge limit value, a first control instruction is generated; when the current charge value is less than the preset lower charge limit value, a third control instruction is generated. Figure 9 shows the flow chart of the DCDC intelligent control method in parking mode. When the 12V battery SOC is less than the lower limit, the VCU controls the DCDC output voltage U=U3=16V to charge the 12V battery as soon as possible; when the 12V battery When the SOC is greater than the lower limit, VCU controls the DCDC output voltage U=U2=14V to meet the power consumption of the vehicle's low-voltage electrical appliances. quantity demand.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为能量回收模式，获取动力电池状态信息，其中，动力电池状态信息包括动力电池的高压荷电值；在高压荷电值大于高压放电门限值的情况下，生成第一控制指令，其中，高压放电门限值为预设的动力电池能量回收时保持安全工作状态的最高荷电值；在高压荷电值小于高压放电门限值的情况下，生成第二控制指令和第三控制指令中的一个。如图9示出了能量回收模式下DCDC智能控制方法的流程图，其中，当车辆从驱动模式进入能量回收模式时，DCDC输出电压可能为U1或U2，如果车辆满足能量回收相关条件时，车辆的能量回收功能将被触发，此时VCU通过接收BMS发送的高压动力电池SOC，判断高压动力电池SOC是否大于预设的高压放电门限值(如80％)，如果大于预设值，则VCU控制DCDC输出电压U＝U3＝16V；当车辆的能量回收功能结束，退出能量回收模式进入驱动模式，或者高压动力电池SOC是否小于预设值(如80％)，当满足两者条件之一时，则VCU控制DCDC输出电压U＝U1＝11V或U＝U2＝14V(需要根据驱动模式下的DCDC智能控制方法确定输出电压)。采用本实施例的技术方案，通过对动力电池的电量进行监测，可在动力电池的电量偏离平衡时，控制低压蓄电池快速放电实现能量回收的正常进行。Optionally, generating the target instruction set based on the working mode and battery status information also includes: in response to the working mode being the energy recovery mode, obtaining the power battery status information, where the power battery status information includes the high-voltage charge value of the power battery; When the high-voltage charge value is greater than the high-voltage discharge threshold value, a first control instruction is generated, wherein the high-voltage discharge threshold value is the preset highest charge value that maintains a safe working state during energy recovery of the power battery; when the high-voltage charge value is When the value is less than the high-voltage discharge threshold value, one of the second control instruction and the third control instruction is generated. Figure 9 shows the flow chart of the DCDC intelligent control method in the energy recovery mode. 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 conditions, the vehicle The energy recovery function will be triggered. At this time, the VCU receives the high-voltage power battery SOC sent by the BMS and determines whether the high-voltage power battery SOC is greater than the preset high-voltage discharge threshold (such as 80%). If it is greater than the preset value, the VCU Control the DCDC output voltage U=U3=16V; when the vehicle's energy recovery function ends, exits the energy recovery mode and enters the driving mode, or whether the high-voltage power battery SOC is less than the preset value (such as 80%), when one of the two conditions is met, Then 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). Using the technical solution of this embodiment, by monitoring the power of the power battery, when the power of the power battery deviates from balance, the low-voltage battery can be controlled to discharge quickly to achieve normal energy recovery.

可选地，基于工作模式和电池状态信息生成目标指令集，还包括：响应于工作模式为故障模式，获取蓄电池状态信息、车辆的故障类型，其中，蓄电池状态信息包括蓄电池的温度值，故障类型包括如下至少之一：蓄电池检测***异常、通信线路异常，通信线路用于将蓄电池状态信息传输至车辆的车身控制器中；在当前荷电值大于预设温度值的情况下，生成第四控制指令；在故障类型为蓄电池检测***异常、通信线路异常中的至少一个时，生成第三控制指令。如图10示出了故障模式下DCDC智能控制方法的流程图，其中当车辆处于前述5种模式下，此时DCDC处于相应的智能能量管理控制过程中，如果EBS检测到12V蓄电池的温度大于70度(可标定值)，则控制DCDC使能关闭。如果EBS检测到12V蓄电池的温度小于70度(可标定值)，则继续维持DCDC智能管理控制。当EBS出现状态故障或者LIN通信异常时，VCU控制DCDC输出电压U＝U2＝14V。当EBS状态故障解除时，VCU恢复DCDC智能能量管理控制。Optionally, generating a target instruction set based on the working mode and battery status information also includes: in response to the working mode being the fault mode, obtaining the battery status information and the fault type of the vehicle, where the battery status information includes the temperature value of the battery, the fault type Including at least one of the following: battery detection system abnormality, communication line abnormality, the communication line is used to transmit battery status information to the vehicle body controller; when the current charge value is greater than the preset temperature value, a fourth control is generated Instruction; when the fault type is at least one of battery detection system abnormality and communication line abnormality, generate a third control instruction. Figure 10 shows the flow chart of the DCDC intelligent control method in fault mode. When the vehicle is in the aforementioned five modes, 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 degree (calibrable value), control the DCDC enable and close. If the EBS detects that the temperature of the 12V battery is less than 70 degrees (calibrable value), it will continue to maintain DCDC intelligent management control. When a status failure occurs in the EBS or the LIN communication is abnormal, the VCU controls the DCDC output voltage U=U2=14V. When the EBS status fault is resolved, the VCU resumes DCDC intelligent energy management control.

采用本申请的技术方案，设计了一种DCDC智能能量管理控制***架构及接口，考虑了电动汽车在不同工作模式下的运行状态，通过不同工作模式下的DCDC智能能量管理控制策略设计，开发了不同的DCDC电压控制输出方法，实现了车辆低压电源输出的有效控制，可以充分提高车辆的能量效用，从而为用户提供更优的驾驶性和经济性。 Using the technical solution of this application, a DCDC intelligent energy management control system architecture and interface were designed, taking into account the operating status of electric vehicles in different working modes, and through the design of DCDC intelligent energy management control strategies in different working modes, a DCDC intelligent energy management control system was developed. Different DCDC voltage control output methods achieve effective control of the vehicle's low-voltage power supply output, which can fully improve the energy utility of the vehicle, thereby providing users with better drivability and economy.

图12是根据本申请其中一实施例的一种DCDC转化器的控制装置的结构框图，如图12所示，该装置包括：获取模块51，用于获取车辆的工作模式、电池状态信息，其中，工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；生成模块52，用于基于工作模式和电池状态信息生成目标指令集，目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，预置电压输出等级由车辆的电气网络特性确定得到。Figure 12 is a structural block diagram of a control device for a DCDC converter according to one embodiment of the present application. As shown in Figure 12, the device includes: an acquisition module 51 for acquiring the working mode and battery status information of the vehicle, where , the working mode includes at least one of the following: starting mode, driving mode, limp mode, parking charging mode, energy recovery mode, failure mode, and the battery status information includes at least one of the following: battery status information, power battery status information; generation module 52 , used to generate a target instruction set based on the working mode and battery status information. The target instruction set is used to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, where the preset voltage output level Determined by the vehicle's electrical network characteristics.

需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。It should be noted that each of the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but is not limited to this: the above modules are all located in the same processor; or the above modules can be implemented in any combination. The forms are located in different processors.

本申请的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。Embodiments of the present application also provide a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

本申请的实施例还提供了一种车辆，包括存储器和处理器，存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。Embodiments of the present application also provide a vehicle, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。Optionally, for specific examples in this embodiment, reference can be made to the examples described in the above-mentioned embodiments and optional implementations, and details will not be described again in this embodiment.

上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。The above serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

在本申请的上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。In the above-mentioned embodiments of the present application, each embodiment is described with its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

在本申请所提供的几个实施例中，应该理解到，所揭露的技术内容，可通过其它的方式实现。其中，以上所描述的装置实施例仅仅是示意性的，例如单元的划分，可以为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，单元或模块的间接耦合或通信连接，可以是电性或其它的形式。In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of units can be a logical functional division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into Another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the units or modules may be in electrical or other forms.

所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integration The unit can be implemented in the form of hardware or software functional units.

所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or contributes to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to cause a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program code. .

以上所述仅是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。 The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications can also be made. should be regarded as the scope of protection of this application.

Claims

一种DCDC转化器的控制方法，其特征在于，包括：A control method for a DCDC converter, characterized by including:

获取车辆的工作模式、电池状态信息，其中，所述工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，所述电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；Obtain the working mode and battery status information of the vehicle, wherein the working mode includes at least one of the following: starting mode, driving mode, limp mode, parking charging mode, energy recovery mode, and fault mode, and the battery status information includes at least the following One: battery status information, power battery status information;

基于所述工作模式和所述电池状态信息生成目标指令集，所述目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，所述预置电压输出等级由所述车辆的电气网络特性确定得到。A target instruction set is generated based on the operating mode and the battery status information. The target instruction set is used to control the DCDC converter to transmit the voltage in the power battery to the battery at different preset voltage output levels, wherein, the The preset voltage output level is determined by the electrical network characteristics of the vehicle.
根据权利要求1所述的方法，其特征在于，所述预置电压输出等级包括第一输出等级、第二输出等级，所述第一输出等级的输出电压值大于所述第二输出等级的输出电压值，基于所述工作模式和所述电池状态信息生成目标指令集，包括：The method of claim 1, wherein the preset voltage output level includes a first output level and a second output level, and the output voltage value of the first output level is greater than the output of the second output level. voltage value, and generate a target instruction set based on the operating mode and the battery status information, including:

响应于所述工作模式为所述启动模式，获取所述蓄电池状态信息，其中，所述蓄电池状态信息包括所述蓄电池的当前荷电值；In response to the operating mode being the startup mode, obtaining the battery status information, wherein the battery status information includes a current charge value of the battery;

在所述当前荷电值小于预设荷电下限值的情况下，生成所述目标指令集中的第一控制指令，所述第一控制指令用于控制所述DCDC转化器将所述动力电池内的电压以所述第一输出等级传输至所述蓄电池中；When the current charge value is less than the preset lower charge limit value, a first control instruction in the target instruction set is generated. The first control instruction is used to control the DCDC converter to convert the power battery to The voltage in the battery is transmitted to the battery at the first output level;

在所述当前荷电值大于所述预设荷电下限值且小于预设荷电上限的情况下，生成所述目标指令集中的第二控制指令，所述第二控制指令用于控制所述DCDC转化器将所述动力电池内的电压以所述第二输出等级传输至所述蓄电池中。When the current charge value is greater than the preset lower charge limit and less than the preset upper charge limit, a second control instruction in the target instruction set is generated, and the second control instruction is used to control all The DCDC converter transmits the voltage in the power battery to the storage battery at the second output level.
根据权利要求2所述的方法，其特征在于，所述预置电压输出等级还包括第三输出等级，所述第三输出等级的输出电压值位于所述第一输出等级的输出电压值和所述第二输出等级的输出电压值之间，基于所述工作模式和所述电池状态信息生成目标指令集，还包括：The method according to claim 2, characterized in that the preset voltage output level further includes a third output level, the output voltage value of the third output level is located between the output voltage value of the first output level and the between the output voltage values of the second output level, generating a target instruction set based on the operating mode and the battery status information, further comprising:

响应于所述工作模式为所述驱动模式，获取所述蓄电池状态信息；In response to the operating mode being the driving mode, obtaining the battery status information;

在所述当前荷电值小于所述预设荷电下限值的情况下，生成所述第一控制指令；When the current charge value is less than the preset lower charge limit value, generate the first control instruction;

在所述当前荷电值大于或等于所述预设荷电上限值的情况下，生成所述第二控制指令；When the current charge value is greater than or equal to the preset charge upper limit value, generate the second control instruction;

在所述当前荷电值大于或等于所述预设荷电下限值，且小于所述预设荷电上限的情况下，生成所述目标指令集中的第三控制指令，所述第三控制指令用于控制所述DCDC转化器将所述动力电池内的电压以所述第三输出等级传输至所述蓄电池中。When 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, a third control instruction in the target instruction set is generated. The instruction is used to control the DCDC converter to transmit the voltage in the power battery to the storage battery at the third output level. in battery.
根据权利要求3所述的方法，其特征在于，所述预置电压输出等级包括第四输出等级，所述第四输出等级对应的输出电压值为零，基于所述工作模式和所述电池状态信息生成目标指令集，还包括：The method of claim 3, wherein the preset voltage output level includes a fourth output level, and the output voltage value corresponding to the fourth output level is zero, based on the working mode and the battery status. Information generation target instruction set, also includes:

响应于所述工作模式为所述跛行模式，获取所述蓄电池状态信息；In response to the operating mode being the limp mode, obtaining the battery status information;

在所述当前荷电值大于所述预设荷电下限值的情况下，生成所述目标指令集中的第四控制指令，所述第四控制指令用于控制所述DCDC转化器将所述动力电池内的电压以所述第四输出等级传输至所述蓄电池中；When the current charge value is greater than the preset lower charge limit value, a fourth control instruction in the target instruction set is generated. The fourth control instruction is used to control the DCDC converter to convert the The voltage in the power battery is transmitted to the storage battery at the fourth output level;

在所述当前荷电值小于所述预设荷电下限值的情况下，生成所述第二控制指令。When the current charge value is less than the preset lower charge limit value, the second control instruction is generated.
根据权利要求3所述的方法，其特征在于，基于所述工作模式和所述电池状态信息生成目标指令集，还包括：The method according to claim 3, characterized in that generating a target instruction set based on the operating mode and the battery status information further includes:

响应于所述工作模式为所述停车充电模式，获取所述蓄电池状态信息；In response to the operating mode being the parking charging mode, obtaining the battery status information;

在所述当前荷电值大于所述预设荷电下限值的情况下，生成所述第一控制指令；When the current charge value is greater than the preset lower charge limit value, generate the first control instruction;

在所述当前荷电值小于所述预设荷电下限值的情况下，生成所述第三控制指令。When the current charge value is less than the preset lower charge limit value, the third control instruction is generated.
根据权利要求3所述的方法，其特征在于，基于所述工作模式和所述电池状态信息生成目标指令集，还包括：The method according to claim 3, characterized in that generating a target instruction set based on the operating mode and the battery status information further includes:

响应于所述工作模式为所述能量回收模式，获取所述动力电池状态信息，其中，所述动力电池状态信息包括所述动力电池的高压荷电值；In response to the working mode being the energy recovery mode, obtaining the power battery status information, wherein the power battery status information includes a high-voltage charge value of the power battery;

在所述高压荷电值大于高压放电门限值的情况下，生成所述第一控制指令，其中，所述高压放电门限值为预设的动力电池能量回收时保持安全工作状态的最高荷电值；The first control instruction is generated when the high-voltage charge value is greater than a high-voltage discharge threshold value, where the high-voltage discharge threshold value is the preset highest charge value that maintains a safe working state during energy recovery of the power battery. electrical value;

在所述高压荷电值小于所述高压放电门限值的情况下，生成所述第二控制指令和所述第三控制指令中的一个。When the high-voltage charge value is less than the high-voltage discharge threshold, one of the second control instruction and the third control instruction is generated.
根据权利要求4所述的方法，其特征在于，基于所述工作模式和所述电池状态信息生成目标指令集，还包括：The method of claim 4, wherein generating a target instruction set based on the operating mode and the battery status information further includes:

响应于所述工作模式为所述故障模式，获取所述蓄电池状态信息、所述车辆的故障类型，其中，所述蓄电池状态信息包括所述蓄电池的温度值，所述故障类型包括如下至少之一：蓄电池检测***异常、通信线路异常，所述通信线路用于将所述蓄电池状态信息传输至所述车辆的车身控制器中；In response to the operating mode being the fault mode, obtaining the battery status information, the vehicle The fault type, wherein the battery status information includes the temperature value of the battery, the fault type includes at least one of the following: battery detection system abnormality, communication line abnormality, the communication line is used to transmit the battery status information transmitted to the vehicle's body controller;

在所述当前荷电值大于预设温度值的情况下，生成所述第四控制指令；When the current charge value is greater than the preset temperature value, generate the fourth control instruction;

在所述故障类型为所述蓄电池检测***异常、所述通信线路异常中的至少一个时，生成所述第三控制指令。The third control instruction is generated when the fault type is at least one of an abnormality in the battery detection system and an abnormality in the communication line.
一种DCDC转化器的控制装置，其特征在于，包括：A control device for a DCDC converter, characterized by including:

获取模块，用于获取车辆的工作模式、电池状态信息，其中，所述工作模式包括如下至少之一：启动模式、驱动模式、跛行模式、停车充电模式、能量回收模式、故障模式，所述电池状态信息包括如下至少之一：蓄电池状态信息、动力电池状态信息；An acquisition module is used to acquire the working mode and battery status information of the vehicle, wherein the working mode includes at least one of the following: starting mode, driving mode, limp mode, parking charging mode, energy recovery mode, and failure mode. The battery The status information includes at least one of the following: battery status information, power battery status information;

生成模块，用于基于所述工作模式和所述电池状态信息生成目标指令集，所述目标指令集用于控制DCDC转化器将动力电池内的电压以不同的预置电压输出等级传输至蓄电池中，其中，所述预置电压输出等级由所述车辆的电气网络特性确定得到。Generating module, configured to generate a target instruction set based on the operating mode and the battery status information. The target instruction set is used 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 level is determined by the electrical network characteristics of the vehicle.
一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行权利要求1至7中任意一项所述的方法。A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein when the program is run, the device where the computer-readable storage medium is located is controlled to execute any of claims 1 to 7. method described in one item.
一种车辆，包括存储器和处理器，其特征在于，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至7任一项中所述的方法。 A vehicle, comprising a memory and a processor, characterized in that a computer program is stored in the memory, and the processor is configured to run the computer program to perform any of the claims 1 to 7 Methods.