Control method and apparatus for increasing driving range of new energy vehicle in lower power

Abstract

A control method and apparatus for increasing the driving range of a new energy vehicle in lower power, a storage medium, and an electronic device. The method comprises: when a user touches a start button of a preset endurance mode, acquiring battery power level (101); determining whether the battery power level meets a preset condition (102); if yes, starting the preset endurance mode, and using a preset control rule to enable a battery management system (BMS) to release reserved battery power, adjust the energy recovery level of a vehicle to a preset highest energy recovery level and limit the power consumption of the vehicle (103); and if not, refusing to start the preset endurance mode (104).

Description

A control method and device for improving the cruising range of new energy vehicles with low battery Technical Field

[0001] The present invention relates to the field of on-board control technology for new energy vehicles, and in particular to a control method and device for improving the cruising range of a new energy vehicle with low battery power. Background Art

[0002] When an electric vehicle is driving and the battery is low and there is no charging station nearby, the battery will reserve some power to ensure that the battery power is not too low, which will cause the vehicle to be abandoned on the road and affect the customer's driving experience. Therefore, how to improve the vehicle's cruising range in a low-battery state is a problem that needs to be solved.

[0003] At present, the patent (CN114889430A) discloses a method, system, electronic device, storage medium and automobile for reducing power consumption of a pure electric vehicle entertainment host system. The method steps specifically include: detecting the number of startup times and / or usage rate of applications in the in-vehicle entertainment system, detecting that no operation is performed on the in-vehicle entertainment screen, judging the driving mode of the vehicle, detecting whether the battery of the entire vehicle is in a low-battery state, and detecting whether the mobile remote control application is remotely operating the vehicle; and executing one or more corresponding power consumption reduction strategies based on one or more results obtained from the above detection or judgment.

[0004] However, the above disclosed method mainly improves the vehicle's endurance by setting a power consumption reduction strategy from the perspective of the entertainment host system, and the degree of improvement in endurance is limited.

[0005] Summary of the Invention

[0006] In view of the above problems, the present invention provides a control method and device for improving the cruising range of new energy vehicles when the battery is low, the main purpose of which is to improve the cruising range of the vehicle when the battery is low.

[0007] In order to solve the above technical problems, the present invention proposes the following solutions:

[0008] In a first aspect, the present invention provides a control method for improving the cruising range of a new energy vehicle with low battery power, the method comprising:

[0009] When the user touches the start button of the preset endurance mode, the battery power is obtained;

[0010] Determining whether the battery power meets a preset condition;

[0011] If so, the preset endurance mode is activated, and the battery management system BMS is caused to release the reserved battery power using the preset control rules, the energy recovery level of the vehicle is adjusted to the preset maximum energy recovery level, and the vehicle power consumption is limited;

[0012] If not, the startup of the preset endurance mode is rejected.

[0013] In a second aspect, the present invention provides a control device for improving the cruising range of a new energy vehicle with low battery power, the device comprising:

[0014] An acquisition unit, configured to acquire the battery power when the user touches the start button of the preset endurance mode;

[0015] A judging unit, configured to judge whether the battery power meets a preset condition;

[0016] a control unit, configured to activate the preset endurance mode if the battery power level meets a preset condition, and use a preset control rule to cause the battery management system (BMS) to release the reserved battery power, adjust the energy recovery level of the vehicle to a preset maximum energy recovery level, and limit the vehicle's total power consumption;

[0017] The control unit is further configured to refuse to start the preset endurance mode if the battery power does not meet a preset condition;

[0018] A prompting unit is used to prompt the activation condition of the preset endurance mode through the preset control screen of the vehicle after the preset endurance mode is refused to be activated.

[0019] In order to achieve the above-mentioned purpose, according to the third aspect of the present invention, a storage medium is provided, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the control method for improving the cruising range of new energy vehicles with low battery power as described in the first aspect above.

[0020] In order to achieve the above-mentioned purpose, according to the fourth aspect of the present invention, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, all or part of the steps of the control device for improving the cruising range of new energy vehicles with low battery power as described in the second aspect are implemented.

[0021] By means of the above technical solution, the control method and device for improving the cruising range of new energy vehicles with low battery provided by the present invention is that when the battery power of an electric vehicle is low and there is no charging pile nearby, the battery will reserve a portion of power to ensure that the battery power is not too low, which will cause the vehicle to be abandoned on the road and affect the customer's driving experience. To this end, the present invention obtains the battery power when the user touches the start button of the preset cruising mode; determines whether the battery power meets the preset conditions; if so, starts the preset cruising mode, and uses the preset control rules to make the battery management system BMS release the reserved battery power, adjust the vehicle's energy recovery level to the preset highest energy recovery level, and limit the vehicle's total power consumption; if not, refuse to execute the startup of the preset cruising mode. The present invention can release the reserved battery power, and the vehicle's energy recovery level automatically jumps to the highest level, thereby improving the vehicle's energy recovery capability and limiting the power of the vehicle's electrical equipment, thereby achieving the goal of improving the vehicle's cruising range in a low-battery state.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0024] FIG1 shows a flow chart of a control method for improving the cruising range of a new energy vehicle with low battery power, provided by an embodiment of the present invention;

[0025] FIG2 shows a flow chart of another control method for improving the cruising range of a new energy vehicle with low battery power provided by an embodiment of the present invention;

[0026] FIG3 shows a block diagram of a control device for improving the cruising range of a new energy vehicle with low battery power provided by an embodiment of the present invention;

[0027] FIG4 shows a block diagram of another control device for improving the cruising range of a new energy vehicle with low battery power provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] When electric vehicles are currently running low on battery power and there are no nearby charging stations, they reserve some power to ensure they don't run too low, potentially leaving the vehicle stranded on the road and impacting the driving experience. To address this issue, the inventors have devised a solution that would increase range by adding an extreme range mode that adjusts the vehicle's energy recovery level when the battery is too low. This would further release the battery's reserved power, limit power distribution to other vehicle components, and ultimately improve range.

[0030] To this end, an embodiment of the present invention provides a control method for improving the cruising range of a new energy vehicle when the battery is low. This method improves the cruising range of the vehicle when the battery is low. The specific execution steps are shown in Figure 1, including:

[0031] 101. When the user touches the start button of the preset endurance mode, obtain the battery power.

[0032] The present invention implements the method of the present invention based on the interaction of vehicle controller PDCS, battery management system BMS, electric compressor AC, motor controller MCU and heater PTC signals.

[0033] The present invention pre-sets a preset endurance mode on a preset control screen of the vehicle, and sets a start button on the preset control screen. By touching the start button, the process of executing the preset endurance mode can be triggered. When the process corresponding to the preset endurance mode is started, it is necessary to first obtain the battery power of the vehicle for subsequent judgment on whether the preset endurance mode needs to be actually executed.

[0034] 102. Determine whether the battery power meets the preset conditions.

[0035] After obtaining the battery power of the vehicle from step 101, it is determined whether the battery power is less than the minimum power threshold value. The purpose is to determine whether the battery of the vehicle is in a low power situation. When the battery power is less than the preset threshold value, that is, the battery of the vehicle is in a low power situation, it can be determined that the preset condition is met; when the battery power is not less than the minimum power threshold value, that is, the battery of the vehicle is not in a low power situation, it can be determined that the condition is not met.

[0036] 103. If the battery power meets the preset conditions, the preset endurance mode is activated, and the preset control rules are used to enable the battery management system BMS to release the reserved battery power, adjust the vehicle's energy recovery level to the preset maximum energy recovery level, and limit the vehicle's total power consumption.

[0037] From step 102 , when the battery power meets the preset condition, that is, the battery of the vehicle is already in a low power state, the preset endurance mode is started.

[0038] After starting the preset endurance mode, the battery management system BMS is first made to release the reserved battery power. The method may be to further lower the original battery minimum power threshold. The specific step is to pre-set a preset threshold. This preset threshold is lower than the minimum power threshold. Such processing can achieve the purpose of releasing the reserved battery power. Then the energy recovery level of the vehicle is automatically made to enter the preset highest energy recovery level. The method may be to pre-set the required energy recovery levels of each level on the preset control screen of the vehicle. The highest energy recovery level is the energy level that the vehicle will automatically enter after executing the preset endurance mode, so as to achieve the effect of improving the energy recovery capability of the vehicle. Finally, the vehicle's overall power consumption is limited. The purpose of reducing the overall vehicle power consumption can be achieved by limiting the vehicle speed or controlling the motor speed and torque according to the most power-saving discharge curve of the motor controller MCU. This is not specifically limited in this embodiment.

[0039] By releasing the reserved power in the battery, improving the vehicle's energy recovery capability, and reducing the vehicle's power consumption, the vehicle's range can be increased in low-battery states.

[0040] 104. If the battery level does not meet the preset conditions, the preset endurance mode will be refused to be started.

[0041] From step 102, it is known that when the battery level does not meet the preset condition, that is, the vehicle's battery is not in a low-battery state, the preset endurance mode is rejected. In other words, the preset endurance mode can only be executed when the battery level is in a low-battery state.

[0042] It should be noted that: after refusing to execute the preset endurance mode, a prompt may be given on the preset control screen of the vehicle, and the content of the prompt is to inform the customer of the conditions for executing the preset endurance mode.

[0043] Based on the implementation of the embodiment in FIG1 above, it can be seen that the present invention provides a control method for improving the cruising range of a new energy vehicle when the battery is low. The present invention obtains the battery power when the user touches the start button of a preset cruising mode; determines whether the battery power meets the preset conditions; if so, activates the preset cruising mode, and uses preset control rules to make the battery management system BMS release the reserved battery power, adjust the vehicle's energy recovery level to the preset maximum energy recovery level, and limit the vehicle's total power consumption; if not, refuses to execute the activation of the preset cruising mode. The present invention can release the reserved battery power, automatically jump the vehicle's energy recovery level to the highest level, improve the vehicle's energy recovery capability, and limit the power of the vehicle's electrical equipment, thereby achieving the goal of improving the vehicle's cruising range when the battery is low.

[0044] Furthermore, as a refinement and extension of the embodiment shown in FIG1 , an embodiment of the present invention also provides another control method for improving the range of a new energy vehicle with low battery, as shown in FIG2 , and the specific steps are as follows:

[0045] 201. When the user touches the start button of the preset endurance mode, obtain the battery power.

[0046] This step is combined with the description of step 101 in the above method, and the same content is not repeated here.

[0047] For example:

[0048] An extreme endurance mode button is set on the vehicle's large screen. This button can only be turned on when the battery power is low. The specific operation process is: the customer clicks the extreme endurance mode button on the vehicle's large screen as needed. Since the button can only be turned on when the battery power is low, after the vehicle system receives the relevant information about touching the extreme endurance mode button, it first obtains the battery power of the vehicle at this time, and then determines whether the battery power of the vehicle is in accordance with the battery power corresponding to turning on the extreme endurance mode, that is, determines whether the battery power of the vehicle is low. The low power judgment value can be pre-set according to actual conditions.

[0049] It should be noted that: when the battery power is lower than a certain value during vehicle driving, the large screen will automatically prompt "Battery power is low, do you want to turn on the extreme endurance mode?" When the customer clicks on the large screen and turns on the extreme endurance mode, the large screen needs to send a mode request signal to PDCS.

[0050] 202. Determine whether the battery power meets the preset conditions.

[0051] This step is combined with the description of step 102 in the above method, and the same contents are not repeated here.

[0052] Determine whether the battery power is less than a preset threshold, the preset threshold; if so, determine that the battery power meets the preset condition; if not, determine that the battery power does not meet the preset condition.

[0053] 203. If the battery power meets the preset conditions, the preset endurance mode is activated, and the preset control rules are used to enable the battery management system BMS to release the reserved battery power, adjust the vehicle's energy recovery level to the preset maximum energy recovery level, and limit the vehicle's total power consumption.

[0054] This step is combined with the description of step 103 in the above method, and the same contents are not repeated here.

[0055] When the battery charge meets preset conditions, the vehicle's preset control screen sends a preset endurance mode request to the vehicle controller (PDCS). Based on the preset endurance mode request, the PDCS lowers the minimum charge threshold corresponding to the battery charge to a preset threshold via the battery management system (BMS), thereby widening the remaining capacity (SOC) range corresponding to the battery. Based on the preset endurance mode request, the PDCS adjusts the vehicle's energy recovery level to a preset maximum energy recovery level based on the energy recovery level set by the user on the preset control screen. Based on the preset endurance mode request, the PDCS reduces the vehicle's speed to a preset speed. Based on the preset endurance mode request, the PDCS controls the motor speed and torque according to the motor controller MCU's minimum energy-saving discharge curve, maintaining the motor speed and torque within the high-efficiency range of the minimum energy-saving discharge curve. Based on the preset endurance mode request, the PDCS determines whether the current scenario is a preset restricted scenario. If so, the electric compressor (AC) and heater (PTC) are stopped; if not, the electric compressor (AC) and heater (PTC) are maintained.

[0056] For example:

[0057] When the vehicle's battery is low and the customer chooses to turn on the extreme endurance mode (i.e., the preset endurance mode) on the vehicle's large screen (i.e., the preset control screen): the large screen sends a mode request to PDCS. After receiving the mode request, the vehicle's energy recovery level automatically enters the highest level, improving the vehicle's energy recovery capability; without affecting battery health, the BMS will lower the battery's minimum power threshold, relax the battery's available SOC range, release the reserved battery power, and increase the battery's available power; PDCS will limit the power of high-voltage accessories, and only allow the AC and PTC air-conditioning systems to operate normally in defrost and defogging scenarios, and prohibit operation in other modes; limit the vehicle speed to avoid the problem of low motor efficiency at high speeds. PDCS controls the motor speed and torque according to the MCU's most power-saving discharge curve, so that the motor speed and torque are in the high-efficiency range, ensuring optimal energy consumption and further improving endurance.

[0058] It should be noted that:

[0059] When the vehicle is parked, PDCS will judge the SOC of the BMS. When the SOC is lower than the minimum threshold, PDCS needs to send a signal to the vehicle to remind the customer that "the battery power is too low, please charge as soon as possible" to avoid the risk of battery damage due to long-term non-charging.

[0060] When the vehicle's battery is low and the customer chooses not to activate the Extreme Range mode button, the vehicle's large screen will prompt the customer, "Battery is low, please charge as soon as possible." PDCS will then select the appropriate energy recovery level based on the user's selected recovery level. The BMS will reserve a reserve of power, maintaining the dischargeable SOC range. PDCS will distribute power based on the maximum discharge power of the BMS battery, without limiting the power of high-voltage accessories. The AC and PTC air conditioning systems will function normally. PDCS will also control the motor torque based on the accelerator pedal position to ensure vehicle dynamics.

[0061] The basis for power allocation is as follows:

[0062] The vehicle controller PDCS calculates the allowable power of the heater PTC according to the heating demand of the vehicle user; the vehicle controller PDCS calculates the allowable power of the electric compressor AC according to the cooling demand of the vehicle user; the vehicle controller PDCS calculates the allowable power of the motor controller MCU according to the accelerator pedal opening, the battery power and the high-efficiency range of the electric drive system; the vehicle controller PDCS calculates the total requested power according to the motor controller MCU request power, the electric compressor AC request power and the heater PTC request power; obtains the maximum dischargeable power of the battery of the battery management system BMS; when the maximum dischargeable power of the battery of the battery management system BMS is not less than the total requested power, power is distributed according to the motor controller MCU request power, the electric compressor AC request power and the heater PTC request power.

[0063] 204. If the battery level does not meet the preset condition, the preset endurance mode is refused to be started.

[0064] This step is combined with the description of step 104 in the above method, and the same contents are not repeated here.

[0065] When the battery level does not meet the preset condition, i.e., the battery level is high, the preset endurance mode is not enabled. Furthermore, in this embodiment, a text prompt "Battery level is high, extreme endurance mode cannot be enabled" may be displayed on the preset control screen to inform the customer of the enabling condition.

[0066] 205. The vehicle's preset control screen prompts the conditions for enabling the preset endurance mode.

[0067] After the rejection of starting the preset endurance mode is obtained from step 204, the vehicle's preset control screen prompts the activation conditions of the preset endurance mode. PDCS needs to send a signal to the vehicle to prompt the customer through the preset control screen that "when the battery power is low, it can be started." The specific content of the prompt to the customer can be set as needed and is not specifically limited in this embodiment.

[0068] Based on the implementation of FIG2 , the present invention provides a control method for improving the range of new energy vehicles with low battery power. The present invention adds an extreme range mode that can only be activated when the vehicle's battery power is low. When the extreme range mode is activated, the vehicle's energy recovery level automatically jumps to the highest level, improving the vehicle's energy recovery capability. Without affecting battery health, the BMS lowers the minimum reserved power threshold, relaxes the battery's available SOC value, and further releases the battery's reserved power. The PDCS limits vehicle speed to avoid low motor efficiency at high speeds, controls motor speed and torque based on the motor's optimal discharge MAP, and limits the power of the vehicle's electrical equipment, limiting the function of the air conditioning system. These measures can further improve the vehicle's range when the battery power is low. Furthermore, after the vehicle is parked, the PDCS determines the BMS's SOC. When the SOC falls below the minimum threshold, the PDCS sends a signal to the large screen, prompting the user, "Battery power is too low, please charge as soon as possible." This can avoid the risk of battery damage caused by prolonged non-charging.

[0069] Furthermore, as an implementation of the method shown in FIG1 above, an embodiment of the present invention also provides a control device for improving the range of a new energy vehicle with low battery, which is used to implement the method shown in FIG1 above. This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will no longer elaborate on the details of the aforementioned method embodiment, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. As shown in FIG3, the device includes:

[0070] An acquisition unit 31 is configured to acquire the battery power when the user touches the start button of the preset endurance mode;

[0071] A judging unit 32, configured to judge whether the battery power obtained from the acquiring unit 31 meets a preset condition;

[0072] a control unit 33 configured to activate the preset endurance mode if the battery power level obtained from the judgment unit 32 meets a preset condition, and to use a preset control rule to cause the battery management system BMS to release reserved battery power, adjust the vehicle's energy recovery level to a preset maximum energy recovery level, and limit the vehicle's total power consumption;

[0073] The control unit 33 is further configured to refuse to start the preset endurance mode if the battery power obtained from the judgment unit 32 does not meet a preset condition.

[0074] Furthermore, as an implementation of the method shown in FIG2 above, an embodiment of the present invention also provides another control device for improving the range of a new energy vehicle with low battery, which is used to implement the method shown in FIG2 above. This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will no longer repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. As shown in FIG4, the device includes:

[0075] An acquisition unit 31 is configured to acquire the battery power when the user touches the start button of the preset endurance mode;

[0076] A judging unit 32, configured to judge whether the battery power obtained from the acquiring unit 31 meets a preset condition;

[0077] a control unit 33 configured to activate the preset endurance mode if the battery power level obtained from the judgment unit 32 meets a preset condition, and to use a preset control rule to cause the battery management system BMS to release reserved battery power, adjust the vehicle's energy recovery level to a preset maximum energy recovery level, and limit the vehicle's total power consumption;

[0078] The control unit 33 is further configured to refuse to start the preset endurance mode if the battery power obtained from the judgment unit 32 does not meet the preset condition;

[0079] The prompting unit 34 is used to prompt the activation condition of the preset endurance mode through the preset control screen of the vehicle after receiving the rejection of the activation of the preset endurance mode from the control unit 33.

[0080] Furthermore, the control unit 33 includes:

[0081] The sending module 331 is configured to, when the battery power meets a preset condition, cause the preset control screen of the vehicle to send a preset endurance mode request to the vehicle controller PDCS;

[0082] The first control module 332 is used to, based on the preset endurance mode request obtained from the sending module 331, reduce the minimum power threshold corresponding to the battery power to a preset threshold through the battery management system BMS by the vehicle controller PDCS, so as to relax the remaining capacity SOC range corresponding to the battery.

[0083] Furthermore, the control unit 33 further includes:

[0084] The second control module 333 is used to adjust the energy recovery level of the vehicle to a preset maximum energy recovery level based on the preset endurance mode request obtained from the sending module 331 and the vehicle controller PDCS according to the energy recovery level set by the user in the preset control screen.

[0085] Furthermore, the control unit 33 further includes:

[0086] a third control module 334 configured to, based on the preset endurance mode request received from the sending module 331 , cause the vehicle controller PDCS to reduce the vehicle speed to a preset speed;

[0087] The fourth control module 335 is used to control the motor speed and torque based on the preset endurance mode request obtained from the sending module 331, and the vehicle controller PDCS controls the motor speed and torque according to the most power-saving discharge curve of the motor controller MCU, so that the motor speed and torque are maintained in the high-efficiency range of the most power-saving discharge curve.

[0088] Furthermore, the control unit 33 further includes:

[0089] a determination module 336 , configured to determine, by the vehicle controller PDCS, whether a current scenario is a preset restricted scenario based on the preset endurance mode request received from the sending module 331 ;

[0090] a fifth control module 337 configured to stop normal operation of the electric compressor AC and the heater PTC if the current scenario obtained from the determination module 336 is a preset restriction scenario;

[0091] The fifth control module 337 is further configured to maintain normal operation of the electric compressor AC and the heater PTC if the current scenario obtained from the determination module 336 is not a preset restriction scenario.

[0092] Furthermore, the judging unit 32 includes:

[0093] A judging module 321 is configured to judge whether the battery power is less than a preset threshold;

[0094] A first determining module 322 is configured to determine that the battery power meets a preset condition if the battery power obtained from the judging module 321 is less than a preset threshold;

[0095] The second determining module 323 is configured to determine that the battery power level does not meet a preset condition if the battery power level obtained from the judging module 321 is not less than a preset threshold.

[0096] Furthermore, an embodiment of the present invention also provides a processor, which is used to run a program, wherein when the program is running, the control method for improving the cruising range of a new energy vehicle with low battery power as described in Figures 1-2 above is executed.

[0097] Furthermore, an embodiment of the present invention also provides a storage medium, which is used to store a computer program, wherein when the computer program is running, it controls the device where the storage medium is located to execute the control method for improving the cruising range of new energy vehicles with low battery power as described in Figures 1-2 above.

[0098] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0099] It is understood that the relevant features of the above methods and devices can be referenced to each other. In addition, the terms "first" and "second" in the above embodiments are used to distinguish between the embodiments, and do not represent the advantages and disadvantages of the embodiments.

[0100] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0101] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general-purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing this type of system. In addition, the present invention is not directed to any specific programming language. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the above description of specific languages ​​is for the purpose of disclosing the best mode of the present invention.

[0102] In addition, the memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0103] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0104] The present application is described with reference to the flow chart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart flow or multiple flows and / or one box or multiple boxes of the block diagram.

[0105] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0106] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0107] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0108] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0109] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0110] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0111] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0112] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A control method for improving the cruising range of a new energy vehicle with low battery, characterized in that: The method comprises: When the user touches the start button of the preset endurance mode, the battery power is obtained; Determining whether the battery power meets a preset condition; If yes, the preset endurance mode is activated, and the battery management system BMS is made to release the reserved battery power by using the preset control rules, the energy recovery level of the vehicle is adjusted to the preset highest energy recovery level, and the vehicle power consumption is limited; If not, then the startup of the preset endurance mode is rejected.

2. The method according to claim 1, characterized in that: If the battery power meets the preset condition, the preset endurance mode is started, and the battery management system BMS is made to release the reserved battery power by using the preset control rule, including: When the battery power meets the preset condition, the preset control screen of the vehicle sends a preset endurance mode request to the vehicle controller PDCS; Based on the preset endurance mode request, the vehicle controller PDCS reduces the minimum power threshold corresponding to the battery power to a preset threshold through the battery management system BMS, so as to relax the remaining capacity SOC range corresponding to the battery.

3. The method according to claim 2, characterized in that The method of adjusting the energy recovery level of the vehicle to a preset maximum energy recovery level by using a preset control rule includes: Based on the preset endurance mode request, the vehicle controller PDCS adjusts the energy recovery level of the vehicle to a preset maximum energy recovery level according to the energy recovery level set by the user in a preset control screen.

4. The method according to claim 2, characterized in that: The method of limiting the vehicle power consumption by using the preset control rules includes: Based on the preset endurance mode request, the vehicle controller PDCS reduces the speed of the vehicle to a preset speed; Based on the preset endurance mode request, the vehicle controller PDCS controls the motor speed and torque according to the most power-saving discharge curve of the motor controller MCU, so that the motor speed and torque are maintained in the high-efficiency range of the most power-saving discharge curve.

5. The method according to claim 4, characterized in that The method of limiting the vehicle power consumption by using the preset control rules includes: Based on the preset endurance mode request, the vehicle controller PDCS determines whether the current scene is a preset restricted scene; If so, the normal operation of the electric compressor AC and the heater PTC is stopped; If not, keep the electric compressor AC and heater PTC working normally.

6. The method according to any one of claims 1 to 5, characterized in that The determining whether the battery power meets a preset condition includes: Determining whether the battery power is less than a preset threshold; If so, determining that the battery power meets a preset condition; If not, it is determined that the battery power does not meet the preset condition.

7. The method according to claim 1, characterized in that After the refusing to start the preset endurance mode, the method further includes: The activation conditions of the preset endurance mode are prompted through the preset control screen of the vehicle.

8. A control device for improving the cruising range of new energy vehicles with low battery, characterized in that: include: An acquisition unit, used to acquire the battery power when the user touches the start button of the preset endurance mode; A judging unit, used to judge whether the battery power meets a preset condition; A control unit, configured to start the preset endurance mode if the battery power meets the preset conditions, and use the preset control rules to make the battery management system BMS release the reserved battery power, adjust the energy recovery level of the vehicle to the preset maximum energy recovery level, and limit the vehicle power consumption; The control unit is further configured to refuse to start the preset endurance mode if the battery power does not meet the preset condition; A prompting unit is used to prompt the activation condition of the preset endurance mode through the preset control screen of the vehicle after the preset endurance mode is refused to be activated.

9. A storage medium comprising a stored program, characterized in that: When the program is running, the device where the storage medium is located is controlled to execute the control method for improving the cruising range of a new energy vehicle with low battery power as described in any one of claims 1 to 7.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, it implements the control method for improving the cruising range of a new energy vehicle with low battery power as described in any one of claims 1 to 7.

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