Power battery voltage configuration method and device, vehicle and storage medium

Abstract

The invention provides a power battery voltage configuration method and device, a vehicle and a storage medium, and the method comprises the steps: executing a voltage configuration message information sending step when the power-on of a whole vehicle is completed; wherein the step of sending the voltage configuration message information comprises the following steps of: acquiring a sampling voltage of a bus of a whole vehicle; judging a voltage platform corresponding to the power battery according to the whole vehicle bus sampling voltage, and obtaining a voltage configuration message corresponding to the voltage platform; voltage configuration message information is sent to a vehicle control unit and a high-voltage controller according to the obtained voltage configuration message; wherein the high-voltage controller is used for completing control program configuration according to voltage configuration message information and then controlling different load motors; when first message confirmation information sent by the vehicle control unit and second message confirmation information sent by the high-voltage controller are received at the same time, power battery voltage configuration success information is sent to the vehicle control unit. The control matching efficiency of the power battery voltage and the controller of the electric vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a power battery voltage configuration method, device, vehicle and storage medium. Background Art

[0002] The core of electric vehicles is the "battery, motor, and electronic control" system. Therefore, it is particularly important to match the power battery with the motor and electronic control of the vehicle, which determines the performance of electric vehicles, mainly in terms of energy saving and safety. In the electric vehicle industry, the power battery voltage platform includes multiple voltage platforms such as 240-360V, 350-500V, 450-600V, and 500-750V. In order to develop various controllers for vehicle electronic control on a platform basis, the general hardware design is developed according to the maximum voltage platform to make it as universal as possible. The motors at the load end, including the inductive load motors of the auxiliary drive, must be accurately developed according to the voltage platform of the vehicle. Otherwise, if the motors at the load end are not matched according to the voltage design of the vehicle, the following typical problems will occur: inappropriate voltage range affects the power-on time; excessive voltage affects the operation and life of high-voltage components of contactors and fuses, the efficiency, insulation resistance, leakage current, etc. of high-voltage components of the vehicle; low voltage seriously affects the efficiency of high-voltage components of the vehicle, and even causes serious heat generation; the load is inefficient and generates serious heat during operation, which wastes energy in vain, and may even seriously trigger high-voltage safety or fire accidents due to mismatched heat generation. Therefore, in order to improve the working efficiency of the vehicle, when the controller controls the motor at the load end of the vehicle, it needs to match the power battery voltage to achieve differentiated control. At present, the process of matching the power battery voltage and controller control of electric vehicles through manual calibration is inefficient. Summary of the invention

[0003] The embodiments of the present application provide a power battery voltage configuration method, device, vehicle and storage medium to solve the problem of low efficiency in the process of matching the power battery voltage of an electric vehicle with the controller through manual calibration.

[0004] In a first aspect, an embodiment of the present application provides a power battery voltage configuration method, comprising:

[0005] When the whole vehicle is powered on, the voltage configuration message information sending step is executed; wherein, the voltage configuration message information sending step includes: obtaining the whole vehicle bus sampling voltage; judging the voltage platform corresponding to the power battery according to the whole vehicle bus sampling voltage, and obtaining the voltage configuration message corresponding to the voltage platform; sending the voltage configuration message information to the whole vehicle controller and the high-voltage controller respectively according to the obtained voltage configuration message; wherein, the high-voltage controller is used to control different load motors after completing the control program configuration according to the voltage configuration message information;

[0006] When the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, power battery voltage configuration success information is sent to the vehicle controller.

[0007] In a possible implementation, when the whole vehicle is powered on, the voltage configuration message information sending step is repeatedly executed according to a first set number of times;

[0008] Correspondingly, the first message confirmation information is sent by the vehicle controller when the matching voltage configuration message information is received after repeating the second set number of times; the second message confirmation information is sent by the high-voltage controller when the matching voltage configuration message information is received after repeating the second set number of times;

[0009] Among them, the voltage configuration message information at least includes a voltage value; when the voltage values ​​in the voltage configuration message information are within the same voltage range, the corresponding voltage configuration message information match each other; and the second set number of times is less than or equal to the first set number of times.

[0010] In a possible implementation, the method further includes:

[0011] After repeatedly executing the voltage configuration message information sending step according to the first set number of times, if the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time, a power battery voltage configuration failure information is sent to the vehicle controller to instruct the vehicle controller to prohibit the operation of the vehicle.

[0012] In a possible implementation manner, before the step of sending the execution voltage configuration message information, the method further includes:

[0013] Obtain the bus sampling voltage of the whole vehicle and determine whether the bus sampling voltage of the whole vehicle is within the safe voltage range;

[0014] When the bus sampling voltage of the vehicle exceeds the safety voltage range, a voltage fault prompt message is sent to the vehicle controller to instruct the vehicle controller to perform corresponding fault processing;

[0015] When the bus sampling voltage of the whole vehicle is within the safety voltage range, the voltage configuration message information sending step is executed.

[0016] In a possible implementation, when the bus sampling voltage of the whole vehicle exceeds the safety voltage range, the method further includes:

[0017] Sending voltage fault prompt information to the high voltage controller to instruct the high voltage controller to start corresponding fault protection.

[0018] In a possible implementation manner, before the step of sending the execution voltage configuration message information, the method further includes:

[0019] Determine whether the vehicle meets the configuration conditions; wherein the configuration conditions include: the first power battery voltage configuration or the power battery voltage configuration is restored to the factory value;

[0020] When the configuration condition is met, the voltage configuration message information sending step is executed.

[0021] In a possible implementation, the high-voltage controller is an integrated controller and / or an independent controller;

[0022] The high-voltage controller includes at least a main drive motor controller, and also includes one or more of an electric steering motor controller, an electric air pump controller and an air-conditioning compressor controller.

[0023] In a second aspect, an embodiment of the present application provides a power battery voltage configuration device, including:

[0024] The voltage acquisition module is used to obtain the bus sampling voltage of the whole vehicle when the whole vehicle is powered on;

[0025] A message acquisition module, used to determine the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, and obtain a voltage configuration message corresponding to the voltage platform;

[0026] A communication module, used to send voltage configuration message information to the vehicle controller and the high-voltage controller respectively according to the acquired voltage configuration message, and when receiving the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller at the same time, send power battery voltage configuration success information to the vehicle controller;

[0027] The high voltage controller is used to control motors with different loads after completing the control program configuration according to the voltage configuration message information.

[0028] In a possible implementation, when the whole vehicle is powered on, the voltage acquisition module, the message acquisition module and the communication module repeatedly execute the voltage configuration message information sending step according to a first set number of times;

[0029] Correspondingly, the first message confirmation information is sent by the vehicle controller when the matching voltage configuration message information is received after repeating the second set number of times; the second message confirmation information is sent by the high-voltage controller when the matching voltage configuration message information is received after repeating the second set number of times;

[0030] Among them, the voltage configuration message information at least includes a voltage value; when the voltage values ​​in the voltage configuration message information are within the same voltage range, the corresponding voltage configuration message information match each other; and the second set number of times is less than or equal to the first set number of times.

[0031] In a possible implementation, the communication module is also used to send power battery voltage configuration failure information to the vehicle controller if the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time after repeatedly executing the voltage configuration message information sending step according to the first set number of times, so as to instruct the vehicle controller to prohibit the operation of the vehicle.

[0032] In a possible implementation, the voltage acquisition module is further used to obtain the bus sampling voltage of the whole vehicle before the step of executing the voltage configuration message information sending step, and determine whether the bus sampling voltage of the whole vehicle is within a safe voltage range;

[0033] The communication module is also used to send voltage fault prompt information to the vehicle controller when the vehicle bus sampling voltage exceeds the safety voltage range, so as to instruct the vehicle controller to perform corresponding fault processing.

[0034] In a possible implementation, the communication module is also used to send voltage fault prompt information to the high-voltage controller when the vehicle bus sampling voltage exceeds the safety voltage range, so as to instruct the high-voltage controller to start corresponding fault protection.

[0035] In a possible implementation, the voltage acquisition module is further used to determine whether the vehicle meets the configuration conditions before the step of executing the voltage configuration message information sending step; wherein the configuration conditions include: the first power battery voltage configuration or the power battery voltage configuration is restored to the factory value;

[0036] When the configuration condition is met, the step of obtaining the whole vehicle bus sampling voltage in the step of sending the voltage configuration message information is started.

[0037] In a possible implementation, the high-voltage controller is an integrated controller and / or an independent controller;

[0038] The high-voltage controller includes at least a main drive motor controller, and also includes one or more of an electric steering motor controller, an electric air pump controller and an air-conditioning compressor controller.

[0039] In a third aspect, an embodiment of the present application provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method described in the first aspect or any possible implementation of the first aspect are implemented.

[0040] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the method described in the first aspect or any possible implementation method of the first aspect.

[0041] The embodiment of the present application provides a power battery voltage configuration method, device, vehicle and storage medium, which executes the voltage configuration message information sending step when the whole vehicle is powered on, and determines that the handshake between the BMS, the high-voltage controller and the whole vehicle controller is successful when the first message confirmation information sent by the whole vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, and improves the power battery voltage configuration efficiency through the information interaction between the BMS, the high-voltage controller and the whole vehicle controller. Among them, the BMS determines the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, and obtains the voltage configuration message corresponding to the voltage platform and sends the voltage configuration message information to the whole vehicle controller and the high-voltage controller respectively, realizing the platform design, and the BMS can adapt to the adaptive configuration of different voltage platforms without the need for manual calibration process, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 This is an application scenario diagram of a power battery voltage configuration method provided in an embodiment of the present application;

[0044] Figure 2 is a flowchart of a method for configuring power battery voltage according to an embodiment of the present application;

[0045] Figure 3 It is a flowchart of the implementation of the voltage configuration message information sending step provided in an embodiment of the present application;

[0046] Figure 4 is a flowchart of a method for configuring power battery voltage according to another embodiment of the present application;

[0047] Figure 5It is a structural schematic diagram of a power battery voltage configuration device provided in an embodiment of the present application;

[0048] Figure 6 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0049] Figure 7 It is a schematic diagram of the structure of a vehicle provided in one embodiment of the present application. DETAILED DESCRIPTION

[0050] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0051] The terms "first", "second", etc. in the specification and claims of the embodiments of the present 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 should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0052] Unless otherwise specified, the term "plurality" means two or more. The character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B. The term "and / or" is a description of the association relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B.

[0053] The words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or including (comprising) refer to the existence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or these groups. In the absence of more restrictions, the elements defined by the statement "including one..." do not exclude the existence of other identical elements in the process, method or device including the elements.

[0054] In this application, each embodiment may focus on the differences from other embodiments, and the same or similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts may refer to the description of the method part.

[0055] Figure 1 : is an application scenario diagram of the power battery voltage configuration method provided by an embodiment of the present application. Figure 1 , showing part of the relevant system structure of the specific implementation of the embodiment of the present application.

[0056] The modules in the system structure mainly involved in the embodiments of the present application include: a vehicle controller, a battery management controller (Battery Management System, BMS), a battery energy distribution unit (Battery Disconnect Unit, BDU), a vehicle power battery, a high-voltage controller and a high-voltage load. Among them, the BMS is connected to the vehicle power battery. BDU is also called a high-voltage distribution box. The high-voltage load includes: a main drive motor and an auxiliary drive motor. The auxiliary drive motor includes one or more of a high-voltage steering motor, an air pump motor, and a high-voltage air-conditioning compressor motor. The working voltage of the main drive motor and the auxiliary drive motor is developed and designed according to the voltage platform of the vehicle power battery to adapt to the voltage range of the vehicle power battery to avoid voltage mismatch affecting work efficiency. Figure 1 The medium and high voltage controller is shown as a controller, and a high voltage load is exemplarily shown to be connected to the high voltage controller, wherein the high voltage load is a three-phase motor.

[0057] In a possible implementation, the high voltage controller is an integrated controller including multiple high voltage loads. Figure 1 Medium and high voltage loads are connected to the high voltage controller in the same way.

[0058] In other possible implementations, the high-voltage controller is independently provided, that is, corresponding high-voltage controllers are provided for the main drive motor, high-voltage steering motor, air pump motor and high-voltage air-conditioning compressor motor respectively, so as to achieve targeted control. The connection relationship between the high-voltage controller and the corresponding load, and between the high-voltage controller and other modules is as follows: Figure 1 shown.

[0059] in addition, Figure 1 The figure also shows the high and low voltage cable harnesses and CAN communication harnesses between the above modules. The thick solid line is the high voltage harness connection, the thin solid line is the low voltage harness connection, and the dotted line is the CAN communication harness connection.

[0060] Based on the above control architecture, the method provided by this application is described as follows:

[0061] Different vehicles have different power battery voltage platforms, so the BMS communication protocols of the high-voltage controller are different, and accordingly, the meanings of the corresponding messages are different. The BMS collects the bus voltage (different voltage values ​​correspond to different voltage platforms and voltage ranges) through the voltage acquisition unit (such as voltage sensor, etc.) in the BDU, and identifies which voltage platform the voltage value corresponds to after calculation through the BMS's own algorithm, and sends the message representing the corresponding voltage platform to the high-voltage controller and the vehicle controller through CAN communication. The high-voltage controller and the vehicle controller design adaptive matching based on the voltage platform message sent by the BMS. After the high-voltage controller completes the automatic matching and configuration of the voltage platform, it performs specific control according to each load parameter and control requirement, and feeds back the configuration results to the vehicle controller. After the vehicle controller processes the feedback message, it prompts the operator with text on the instrument.

[0062] Among them, the voltage acquisition unit is usually a detection component such as a voltage sensor, which is generally set on the front end of the vehicle power battery side, that is, the bus voltage (the voltage input from the power battery to the BDU) enters the positive and negative poles of the DC voltage inside the BDU. The voltage sensor feeds back the detected voltage electrical signal to the BMS, and the BMS converts the detected voltage values ​​into corresponding electrical signals. The BMS re-converts the detected electrical signals into specific voltage values ​​according to the calibration relationship. Different voltage values ​​correspond to different voltage platforms, and the BMS sends different messages according to different voltage platforms.

[0063] In addition, the vehicle power battery is usually a lithium battery. Regardless of its SOC and SOH health, its voltage range is relatively stable. Therefore, this patent stipulates that different voltage values ​​are in a voltage range, corresponding to different voltage platforms calibrated in advance, and different voltage values ​​should be included in different voltage ranges. BMS collects specific voltage values, identifies them as a certain voltage platform after calculation through a set algorithm, and sends them to the corresponding high-voltage controller in the form of a message. The high-voltage controller automatically identifies them according to different message values, matches the voltage range, and matches the control program according to the corresponding voltage platform.

[0064] The voltage range preset by the BMS is determined by the voltage range that the hardware design of the high-voltage controller can meet. This voltage range is usually the commonly used vehicle voltage range (including 240-360V, 350-500V, 450-600V, 500-750V and other voltage platforms). The control software program that can recognize these commonly used voltage platforms is written in advance according to the commonly used vehicle voltage range. The high-voltage controller receives the voltage configuration message sent by the vehicle BMS to complete the voltage adaptive configuration.

[0065] The power battery voltage configuration method introduced in the embodiment of this application is mainly used for the adaptive configuration between the controller, BMS, vehicle controller, etc. in the high-voltage system. In the specific implementation process, the scheme of this application can be extended to the adaptive configuration between the controller, BMS, vehicle controller, etc. in other low-voltage systems, for example: non-motor vehicle electric vehicles with different low-voltage systems such as 12V, 24V, 36V, 48V, etc. In the embodiment of this application, unless otherwise specified, the power battery is the power battery of the vehicle.

[0066] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0067] Figure 2 is a flowchart of a method for configuring power battery voltage according to an embodiment of the present application. Figure 2 As shown, the method comprises the following steps:

[0068] S201. When the vehicle is powered on, execute the voltage configuration message information sending step.

[0069] The execution subject of the power battery voltage configuration method provided in the embodiment of the present application is the BMS. In the specific implementation process, the BMS, the vehicle controller and the high-voltage controller communicate with each other to complete the power battery voltage configuration of the vehicle.

[0070] Figure 3 is a flowchart of the implementation of the voltage configuration message information sending step provided in an embodiment of the present application, such as Figure 3As shown, the voltage configuration message information sending step specifically includes the following steps:

[0071] S2011, obtaining the bus sampling voltage of the whole vehicle;

[0072] S2012. Determine the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, and obtain a voltage configuration message corresponding to the voltage platform;

[0073] S2013. Send voltage configuration message information to the vehicle controller and the high-voltage controller respectively according to the obtained voltage configuration message; wherein the high-voltage controller is used to control different load motors after completing the control program configuration according to the voltage configuration message information.

[0074] Among them, the voltage platform corresponds to a certain voltage range, and the bus sampling voltage of the whole vehicle is a single sampling value. Therefore, when judging the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, the corresponding voltage platform is determined based on the voltage range to which the bus sampling voltage of the whole vehicle belongs. For example: the power battery includes multiple voltage platforms such as 240-360V, 350-500V, 500-750V, etc. When the bus sampling voltage of the whole vehicle is 250V, the voltage platform corresponding to the power battery is judged to be the first platform (ie, the 240-360V platform); when the bus sampling voltage of the whole vehicle is 400V, the voltage platform corresponding to the power battery is judged to be the second platform (ie, the 350-500V platform).

[0075] In the specific implementation process, the BMS stores voltage configuration messages corresponding to different voltage platforms. After the vehicle is powered on, when the power battery voltage is configured, the voltage configuration message is obtained based on the voltage platform of the power battery to instruct the high-voltage controller to adaptively call the control program written in advance according to the voltage configuration message, output the matching three-phase voltage according to the voltage platform adapted by the motor, and control the corresponding load motor to work.

[0076] S202: When the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, a power battery voltage configuration success information is sent to the vehicle controller.

[0077] After the BMS sends the voltage configuration message information, the vehicle controller and the high-voltage controller feed back the first message confirmation information and the second message confirmation information as handshake messages.

[0078] Among them, the power battery voltage configuration success information is sent to the vehicle controller to instruct the vehicle controller to display the power battery voltage configuration success information through the instrument, vehicle computer, etc., to complete the prompt to the relevant personnel.

[0079] In this embodiment, when the vehicle is powered on, the voltage configuration message information sending step is executed, and when the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, it is determined that the handshake between the BMS, the high-voltage controller and the vehicle controller is successful, and the power battery voltage configuration efficiency is improved through the information interaction between the BMS, the high-voltage controller and the vehicle controller. Among them, the BMS determines the voltage platform corresponding to the power battery according to the bus sampling voltage of the vehicle, and obtains the voltage configuration message corresponding to the voltage platform and sends the voltage configuration message information to the vehicle controller and the high-voltage controller respectively, realizing platform design. The BMS can adapt to the adaptive configuration of different voltage platforms without the need for manual calibration process, saving time and effort.

[0080] In a possible implementation, when the whole vehicle is powered on, the step of sending the voltage configuration message information is repeated according to a first set number of times.

[0081] Correspondingly, the first message confirmation information is sent by the vehicle controller when the matching voltage configuration message information is received after repeating the second set number of times; the second message confirmation information is sent by the high voltage controller when the matching voltage configuration message information is received after repeating the second set number of times;

[0082] The voltage configuration message information at least includes a voltage value; when the voltage values ​​in the voltage configuration message information are within the same voltage range, the corresponding voltage configuration message information match each other; and the second set number of times is less than or equal to the first set number of times.

[0083] The first set number of times should not be too large to avoid prolonging the power battery voltage configuration time and reducing the configuration efficiency. Optionally, the first set number of times is 5 to 7 times, and correspondingly, the second set number of times is 3 to 5 times.

[0084] In this embodiment, the voltage configuration message information sending step is repeatedly executed according to the first set number of times, which can avoid errors in the bus sampling voltage of the whole vehicle. In particular, when the bus sampling voltage of the whole vehicle is unstable at the initial stage of the whole vehicle power-on, the voltage configuration message information sending step is repeatedly executed according to the first set number of times, which can ensure that the voltage platform corresponding to the power battery is accurately determined, and the voltage configuration message is obtained accordingly, thereby improving the power battery voltage configuration efficiency.

[0085] In a possible implementation, the method further includes:

[0086] After repeatedly executing the voltage configuration message information sending step according to the first set number of times, if the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time, a power battery voltage configuration failure message is sent to the vehicle controller to instruct the vehicle controller to prohibit the operation of the vehicle.

[0087] In the specific implementation process, if after the voltage configuration message information sending step is repeatedly executed according to the first set number of times, the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time, the configuration fails. When the configuration fails, the vehicle is not allowed to start and run to avoid damage to parts due to the mismatch between the controller and the actual vehicle voltage platform. In addition, after the above configuration is successfully completed, no new voltage configuration message is received, that is, no adaptive configuration is performed.

[0088] In a possible implementation, before executing the voltage configuration message information sending step in step S201, the method further includes:

[0089] Obtain the bus sampling voltage of the whole vehicle and determine whether the bus sampling voltage of the whole vehicle is within the safe voltage range;

[0090] When the bus sampling voltage of the vehicle exceeds the safe voltage range, a voltage fault prompt message is sent to the vehicle controller to instruct the vehicle controller to perform corresponding fault processing;

[0091] When the bus sampling voltage of the whole vehicle is within the safe voltage range, the voltage configuration message information sending step is executed.

[0092] Among them, the safe voltage range is determined based on the hardware design of the high-voltage controller. When the vehicle is offline for the first time, if the voltage platform of the whole vehicle does not match, that is, the power battery voltage does not match the corresponding safe operating voltage range of the high-voltage controller, the components may be damaged at the moment of power-on, and high-voltage safety accidents may occur. Therefore, the range of the voltage platform collected by the BMS must be within the voltage range of the high-voltage controller hardware design. When this range is exceeded, the high-voltage controller reports a fault and performs corresponding protection. The fault information is processed by the vehicle controller and forwarded to the instrument to prompt the operator, so as to remind the operator that the voltage of the high-voltage controller and the actual vehicle power battery does not match, and guide the operator to inquire about the cause to avoid damage to the high-voltage controller when the vehicle is started.

[0093] In this embodiment, when the bus sampling voltage of the whole vehicle exceeds the safe voltage range, a voltage fault prompt message is first sent to the whole vehicle controller for fault processing, and the power battery voltage configuration is executed after the fault processing is completed, so as to avoid the high-voltage controller running under undervoltage or overvoltage conditions after the whole vehicle enters the whole vehicle startup operation from the initial power-on stage after the power battery voltage configuration.

[0094] In a possible implementation, when the bus sampling voltage of the vehicle exceeds the safe voltage range, the method further includes:

[0095] Send voltage fault prompt information to the high-voltage controller to instruct the high-voltage controller to start corresponding fault protection.

[0096] When the bus voltage of the whole vehicle exceeds the safe voltage range, that is, the voltage at the input terminal of the high-voltage controller of the whole vehicle power battery exceeds the hardware adaptability range of the high-voltage controller. Specifically, when the bus sampling voltage of the whole vehicle is higher than the upper limit of the safe voltage range, an overvoltage fault prompt message is sent to the high-voltage controller, and when the bus sampling voltage of the whole vehicle is lower than the lower limit of the safe voltage range, an undervoltage fault prompt message is sent to the high-voltage controller. The high-voltage controller starts the corresponding fault protection according to the overvoltage fault prompt message and the undervoltage fault prompt message to avoid damage to the high-voltage controller.

[0097] Optionally, when the bus sampling voltage of the whole vehicle exceeds the safe voltage range, and the amplitude of exceeding the safe voltage range is greater than the set voltage threshold, a voltage fault prompt message is sent to the high-voltage controller, wherein the set voltage threshold is set according to the hardware tolerance of the high-voltage controller. In this implementation, the voltage fault prompt message is sent based on the comprehensive setting of the voltage threshold, which can avoid the fault protection from being falsely started due to the bus sampling voltage error of the whole vehicle.

[0098] In this implementation, when the bus sampling voltage of the entire vehicle exceeds the safe voltage range, a voltage fault prompt message is sent to the high-voltage controller to instruct the high-voltage controller to start the corresponding fault protection to avoid problems such as inefficiency, severe heat generation, and energy waste caused by the high-voltage controller operating under undervoltage or overvoltage conditions.

[0099] In a possible implementation manner, before executing the step of sending the voltage configuration message information, the method further includes:

[0100] Determine whether the vehicle meets the configuration conditions; wherein the configuration conditions include: the first power battery voltage configuration or the power battery voltage configuration is restored to the factory value;

[0101] When the configuration conditions are met, the voltage configuration message information sending step is executed.

[0102] Generally, when the vehicle is off the production line and powered on for the first time, the BMS will execute the power battery voltage configuration method for the first time. Specifically, the BMS sends an adapted voltage configuration message according to the voltage platform corresponding to the bus sampling voltage of the vehicle, and the high-voltage controller receives the voltage configuration message for automatic configuration, that is, calling the matching program and protection mechanism, and automatically setting the upper and lower limits of the actual vehicle voltage protection according to the voltage platform of the vehicle.

[0103] In other possible embodiments, when the power battery is replaced, modified, or the control program is refreshed and upgraded, if the voltage range value of the high-voltage controller is changed to the default value or restored to the factory value, the high-voltage controller receives the voltage configuration again. In the specific implementation process, in order to ensure the safety of the vehicle voltage configuration, changing the voltage range value of the high-voltage controller to the default value or restoring the factory value requires administrator privileges to complete, and users are generally not allowed to perform this operation privately. Specifically, the operation of changing the voltage range value of the high-voltage controller to the default value or restoring the factory value is completed through the default value function code or the corresponding message.

[0104] In this embodiment, after the vehicle is powered on, it is confirmed whether the vehicle meets the configuration conditions. When the power battery voltage configuration is performed for the first time or the power battery voltage configuration is restored to the factory value, the power battery voltage configuration is executed to avoid repeated execution of the power battery voltage configuration to extend the startup and running time of the vehicle.

[0105] In a possible implementation, the high-voltage controller is an integrated controller and / or an independent controller;

[0106] The high-voltage controller includes at least a main drive motor controller, and also includes one or more of an electric steering motor controller, an electric air pump controller and an air-conditioning compressor controller.

[0107] Optionally, the high-voltage controller is a separate main drive motor controller and a separate auxiliary drive motor controller (for example, an electric steering motor controller, an electric air pump controller, an air conditioning compressor controller, etc.). In the specific implementation process, an independent auxiliary drive motor controller is set according to the specific configuration of the vehicle. When executing the power battery voltage configuration, each high-voltage controller independently completes the self-identification configuration.

[0108] Optionally, the high-voltage controller is an integrated controller, that is, the main drive motor controller and the auxiliary drive motor controller are integrated together. When executing the power battery voltage configuration, the integrated controller uniformly completes the self-identification configuration of various controls.

[0109] Optionally, the high-voltage controller includes a separate main drive motor controller, and the auxiliary drive motor controllers are integrated together, that is, the vehicle includes two controllers, namely, a main drive motor controller and an integrated controller.

[0110] In this embodiment, according to the different forms of high-voltage controllers, voltage configuration is completed for multiple high-voltage controllers respectively to ensure the configuration success rate and improve the energy consumption ratio and operation safety of the whole vehicle. The self-identification configuration of multiple integrated controllers is completed uniformly for the integrated high-voltage controller to improve the configuration efficiency.

[0111] In the above embodiments, the vehicle controller generally does not participate in the control, but is mainly used to process the feedback message and display the configuration information on the instrument to prompt or guide the operator to complete the voltage configuration. In addition, the vehicle controller is also used to display the self-identification configuration result on the instrument and / or monitoring system display, and store the configuration result.

[0112] Figure 4 is a flowchart of a method for configuring power battery voltage according to another embodiment of the present application. Figure 4 As shown, the method comprises the following steps:

[0113] S401, obtaining the vehicle voltage value collected by the voltage sensor in the BDU;

[0114] S402, determining whether the vehicle voltage value exceeds a safe voltage range;

[0115] S403, sending voltage fault prompt information to the vehicle controller and the high-voltage controller;

[0116] S404, repeating the step of sending voltage configuration message information N times;

[0117] S405, determining whether the first message confirmation information sent by the vehicle controller is received;

[0118] S406, determining whether the second message confirmation information sent by the high voltage controller is received;

[0119] S407: When the first message confirmation information and the second message confirmation information are received simultaneously, it is determined that the configuration is successful, and configuration success information is sent to the vehicle controller and the high-voltage controller.

[0120] In the embodiment of the present application, when the vehicle voltage value is within the safe voltage range, the BMS repeats the voltage configuration message information sending step to avoid the error of collecting the vehicle voltage value in a single time and reducing the configuration efficiency. When the first message confirmation information and the second message confirmation letter representing the handshake signal fed back by the vehicle controller and the high-voltage controller are received, it is determined that the configuration is successful, and the power battery voltage configuration efficiency is improved through the information interaction between the BMS, the high-voltage controller and the vehicle controller.

[0121] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0122] The following is an embodiment of the device of the present application. For details not described in detail, please refer to the corresponding method embodiment described above.

[0123] Figure 5is a schematic diagram of the structure of a power battery voltage configuration device provided in an embodiment of the present application, such as Figure 5 For the sake of convenience, only the parts related to the embodiment of the present application are shown. Figure 5 As shown, the device comprises:

[0124] The voltage acquisition module 501 is used to acquire the bus sampling voltage of the whole vehicle when the whole vehicle is powered on;

[0125] The message acquisition module 502 is used to determine the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, and obtain the voltage configuration message corresponding to the voltage platform;

[0126] The communication module 503 is used to send voltage configuration message information to the vehicle controller and the high-voltage controller respectively according to the acquired voltage configuration message, and send power battery voltage configuration success information to the vehicle controller when receiving the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller at the same time;

[0127] Among them, the high-voltage controller is used to control different load motors after completing the control program configuration according to the voltage configuration message information.

[0128] In a possible implementation, when the vehicle is powered on, the voltage acquisition module 501, the message acquisition module 502 and the communication module 503 repeatedly execute the voltage configuration message information sending step according to a first set number of times;

[0129] Correspondingly, the first message confirmation information is sent by the vehicle controller when the matching voltage configuration message information is received after repeating the second set number of times; the second message confirmation information is sent by the high voltage controller when the matching voltage configuration message information is received after repeating the second set number of times;

[0130] The voltage configuration message information at least includes a voltage value; when the voltage values ​​in the voltage configuration message information are within the same voltage range, the corresponding voltage configuration message information match each other; and the second set number of times is less than or equal to the first set number of times.

[0131] In one possible implementation, the communication module 503 is also used to send power battery voltage configuration failure information to the vehicle controller if the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time after repeatedly executing the voltage configuration message information sending step according to the first set number of times, so as to instruct the vehicle controller to prohibit the operation of the vehicle.

[0132] In a possible implementation, the voltage acquisition module 501 is further used to acquire the bus sampling voltage of the whole vehicle before executing the voltage configuration message information sending step, and determine whether the bus sampling voltage of the whole vehicle is within the safe voltage range;

[0133] The communication module 503 is also used to send voltage fault prompt information to the vehicle controller when the vehicle bus sampling voltage exceeds the safe voltage range, so as to instruct the vehicle controller to perform corresponding fault processing.

[0134] In a possible implementation, the communication module 503 is also used to send voltage fault prompt information to the high-voltage controller when the bus sampling voltage of the whole vehicle exceeds the safe voltage range, so as to instruct the high-voltage controller to start corresponding fault protection.

[0135] In a possible implementation, the voltage acquisition module 501 is further used to determine whether the vehicle meets the configuration conditions before executing the voltage configuration message information sending step; wherein the configuration conditions include: the first power battery voltage configuration or the power battery voltage configuration is restored to the factory value;

[0136] When the configuration conditions are met, the step of obtaining the bus sampling voltage of the whole vehicle in the step of sending the voltage configuration message information is started.

[0137] In a possible implementation, the high-voltage controller is an integrated controller and / or an independent controller;

[0138] The high-voltage controller includes at least a main drive motor controller, and also includes one or more of an electric steering motor controller, an electric air pump controller and an air-conditioning compressor controller.

[0139] In this embodiment, when the vehicle is powered on, the voltage configuration message information sending step is executed, and when the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, it is determined that the handshake between the BMS, the high-voltage controller and the vehicle controller is successful, and the power battery voltage configuration efficiency is improved through the information interaction between the BMS, the high-voltage controller and the vehicle controller. Among them, the BMS determines the voltage platform corresponding to the power battery according to the bus sampling voltage of the vehicle, and obtains the voltage configuration message corresponding to the voltage platform and sends the voltage configuration message information to the vehicle controller and the high-voltage controller respectively, realizing platform design. The BMS can adapt to the adaptive configuration of different voltage platforms without the need for manual calibration process, saving time and effort.

[0140] Figure 6 Schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 6As shown, the electronic device 6 of this embodiment includes: a processor 60, a memory 61, and a computer program 62 stored in the memory 61 and executable on the processor 60. When the processor 60 executes the computer program 62, the steps in the above-mentioned power battery voltage configuration method embodiments are implemented, for example Figure 1 Alternatively, when the processor 60 executes the computer program 62, the functions of each module / unit in the above-mentioned device embodiments are realized, for example Figure 5 Functions of modules 501 to 503 are shown.

[0141] Exemplarily, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete the present application. The one or more modules / units may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program 62 in the electronic device 6. For example, the computer program 62 may be divided into Figure 5 Modules 501 to 503 are shown.

[0142] The electronic device 6 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will appreciate that Figure 6 It is only an example of the electronic device 6 and does not constitute a limitation of the electronic device 6. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0143] The processor 60 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or 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, etc.

[0144] The memory 61 may be an internal storage unit of the electronic device 6, such as a hard disk or memory of the electronic device 6. The memory 61 may also be an external storage device of the electronic device 6, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 6. Further, the memory 61 may also include both an internal storage unit and an external storage device of the electronic device 6. The memory 61 is used to store the computer program and other programs and data required by the electronic device. The memory 61 may also be used to temporarily store data that has been output or is to be output.

[0145] The present application also provides a vehicle, such as Figure 7 As shown, the vehicle 7 includes the aforementioned electronic device 6 .

[0146] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0147] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0148] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0149] In the embodiments provided in the present application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0150] 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 distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0151] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0152] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various power battery voltage configuration method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0153] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A power battery voltage configuration method, characterized in that: include: When the whole vehicle is powered on, the voltage configuration message information sending step is executed; wherein, the voltage configuration message information sending step includes: obtaining the whole vehicle bus sampling voltage; judging the voltage platform corresponding to the power battery according to the whole vehicle bus sampling voltage, and obtaining the voltage configuration message corresponding to the voltage platform; sending the voltage configuration message information to the whole vehicle controller and the high-voltage controller respectively according to the obtained voltage configuration message; wherein, the high-voltage controller is used to control different load motors after completing the control program configuration according to the voltage configuration message information; When the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are received at the same time, power battery voltage configuration success information is sent to the vehicle controller.

2. The power battery voltage configuration method according to claim 1, characterized in that: When the vehicle is powered on, the voltage configuration message information sending step is repeated according to the first set number of times; Correspondingly, the first message confirmation information is sent by the vehicle controller when the matching voltage configuration message information is received after repeating the second set number of times; the second message confirmation information is sent by the high-voltage controller when the matching voltage configuration message information is received after repeating the second set number of times; Among them, the voltage configuration message information at least includes a voltage value; when the voltage values ​​in the voltage configuration message information are within the same voltage range, the corresponding voltage configuration message information match each other; and the second set number of times is less than or equal to the first set number of times.

3. The power battery voltage configuration method according to claim 2, characterized in that: Also includes: After repeatedly executing the voltage configuration message information sending step according to the first set number of times, if the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller are not received at the same time, a power battery voltage configuration failure information is sent to the vehicle controller to instruct the vehicle controller to prohibit the operation of the vehicle.

4. The power battery voltage configuration method according to any one of claims 1 to 3, characterized in that: Before the step of sending the voltage configuration message information, the method further includes: Obtain the bus sampling voltage of the whole vehicle and determine whether the bus sampling voltage of the whole vehicle is within the safe voltage range; When the bus sampling voltage of the vehicle exceeds the safety voltage range, a voltage fault prompt message is sent to the vehicle controller to instruct the vehicle controller to perform corresponding fault processing; When the bus sampling voltage of the whole vehicle is within the safety voltage range, the voltage configuration message information sending step is executed.

5. The power battery voltage configuration method according to claim 4, characterized in that: When the bus sampling voltage of the vehicle exceeds the safety voltage range, it also includes: Sending voltage fault prompt information to the high voltage controller to instruct the high voltage controller to start corresponding fault protection.

6. The power battery voltage configuration method according to claim 1, characterized in that: Before the step of sending the voltage configuration message information, the method further includes: Determine whether the vehicle meets the configuration conditions; wherein the configuration conditions include: the first power battery voltage configuration or the power battery voltage configuration is restored to the factory value; When the configuration condition is met, the voltage configuration message information sending step is executed.

7. The power battery voltage configuration method according to claim 1, characterized in that: The high-voltage controller is an integrated controller and / or an independent controller; The high-voltage controller includes at least a main drive motor controller, and also includes one or more of an electric steering motor controller, an electric air pump controller and an air-conditioning compressor controller.

8. A power battery voltage configuration device, characterized in that: include: The voltage acquisition module is used to obtain the bus sampling voltage of the whole vehicle when the whole vehicle is powered on; A message acquisition module, used to determine the voltage platform corresponding to the power battery according to the bus sampling voltage of the whole vehicle, and obtain a voltage configuration message corresponding to the voltage platform; A communication module, used to send voltage configuration message information to the vehicle controller and the high-voltage controller respectively according to the acquired voltage configuration message, and when receiving the first message confirmation information sent by the vehicle controller and the second message confirmation information sent by the high-voltage controller at the same time, send power battery voltage configuration success information to the vehicle controller; The high voltage controller is used to control motors with different loads after completing the control program configuration according to the voltage configuration message information.

9. A vehicle comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method as claimed in any one of claims 1 to 7 are implemented.

Images