Electric quantity management and control method and device for ultra-high-speed driving of extended-range automobile and extended-range automobile

Abstract

The invention relates to the technical field of extended-range automobiles, and provides an electric quantity management and control method and device for ultra-high-speed driving of an extended-range automobile and the extended-range automobile. The method comprises the steps that when the remaining electric quantity of the automobile is located in a preset electric quantity interval, whether the automobile is in an ultra-high-speed driving state within a plurality of different preset durations or not is detected; if the vehicle is in the first ultra-high-speed driving state within the first preset duration, and the range extender is in a normal starting state; judging whether the vehicle is in a second ultra-high-speed driving state within a second preset duration or not and whether the average generated power exceeds a calibration value or not; if yes, the vehicle speed energy consumption influence quantity is determined according to the average vehicle speed and average energy consumption of the vehicle within the second preset duration, and the vehicle speed energy consumption influence quantity and the whole vehicle energy consumption demand are added to obtain the power generation power requested by the power generator, so that the power generation power of the range extender is adjusted, and the effect of delaying and maintaining the electric quantity descending speed of the power battery is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of extended-range vehicles, and in particular to a method and device for controlling the amount of electricity when an extended-range vehicle is traveling at ultra-high speeds, and an extended-range vehicle. Background Art

[0002] Existing extended-range electric vehicles and pure electric vehicles usually give users a reminder when the power battery is low. However, speed limits vary in different countries and regions around the world. When users are driving at ultra-high speeds, due to the influence of air resistance and other factors, the motor needs more electrical energy to overcome these resistances, and the vehicle needs to consume more energy to maintain high speeds; however, the working principle of extended-range electric vehicles is to rely on the built-in generator to charge the battery and provide additional power. When the vehicle is driving at ultra-high speeds, the power demand of the motor increases significantly, and the power generated by the generator cannot meet all the power required for driving, resulting in a rapid decrease in the power of the power battery, and even a situation where the power cannot be maintained. In existing extended-range vehicles, there is a lack of effective reminders and control strategies for this situation, resulting in users facing the risk of running out of power when driving at high speeds. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a method, device and extended-range vehicle for power management and control when an extended-range vehicle is driving at ultra-high speed, so as to solve the technical problems of effective reminder of lack of power and adjustment of power control strategy when the extended-range vehicle is driving at ultra-high speed.

[0004] In a first aspect of an embodiment of the present application, a method for controlling power of an extended-range vehicle during ultra-high-speed driving is provided, comprising: obtaining the remaining power of the vehicle, and, when the remaining power is within a preset power range, detecting whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods; if the vehicle is in a first ultra-high-speed driving state within a first preset time period, detecting whether the range extender is currently in a state capable of being started normally; if the range extender is in a state capable of being started normally, determining whether the vehicle is in a second ultra-high-speed driving state within a second preset time period, the second preset time period being greater than the first preset time period; if the vehicle is in the second ultra-high-speed driving state within the second preset time period, detecting whether the average power generation of the vehicle within the second preset time period exceeds a calibration value; if it exceeds, determining a speed energy consumption influence according to the average vehicle speed and average energy consumption of the vehicle within the second preset time period, and adding the speed energy consumption influence to the energy consumption demand of the entire vehicle to obtain a generator requested power generation; and adjusting the power generation power of the range extender based on the generator requested power generation.

[0005] According to a second aspect of an embodiment of the present application, there is provided a power control device for ultra-high-speed driving of a range-extended vehicle, comprising: a first detection module, configured to obtain the remaining power of the vehicle, and when the remaining power is within a preset power interval, detect whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods; a second detection module, configured to detect whether the range extender is currently in a state capable of normal start-up if the vehicle is in a first ultra-high-speed driving state within a first preset time period; a third detection module, configured to determine whether the vehicle is in a state capable of normal start-up within a second preset time period if the range extender is in a state capable of normal start-up whether the vehicle is in a second super-high-speed driving state, and the second preset time length is greater than the first preset time length; a fourth detection module is configured to detect whether the average power generation power of the vehicle in the second preset time length exceeds a calibration value if the vehicle is in the second super-high-speed driving state within the second preset time length; the power strategy module is configured to, if exceeded, determine the speed energy consumption impact according to the average speed and average energy consumption of the vehicle in the second preset time length, and add the speed energy consumption impact to the vehicle energy consumption demand to obtain the generator requested power generation power; the power control module is configured to adjust the power generation power of the range extender based on the generator requested power generation power.

[0006] According to a third aspect of an embodiment of the present application, an extended-range vehicle is provided, comprising a controller and a battery management system. The vehicle controller is connected to the battery management system and comprises at least a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above method are implemented.

[0007] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the above-mentioned method for controlling the power of an extended-range vehicle during ultra-high-speed driving obtains the remaining power of the vehicle, and when the remaining power is within a preset power range, detects whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods; if the vehicle is in a first ultra-high-speed driving state within a first preset time period, detects whether the range extender is currently in a state capable of being started normally; if the range extender is in a state capable of being started normally, determines whether the vehicle is in a second ultra-high-speed driving state within a second preset time period, and the second preset time period is greater than the first preset time period ... Assuming that the vehicle is in the second ultra-high-speed driving state within the second preset time, detect whether the average power generation power of the vehicle within the second preset time exceeds the calibration value; if it exceeds, determine the speed energy consumption influence according to the average vehicle speed and average energy consumption of the vehicle within the second preset time, and add the speed energy consumption influence to the energy consumption demand of the whole vehicle to obtain the requested power generation power of the generator; adjust the power generation power of the range extender based on the requested power generation power of the generator, so as to achieve the adjustment of the power generation power of the range extender when the vehicle's power drops rapidly due to ultra-high-speed driving in the preset power range, thereby delaying and maintaining the power reduction speed of the power battery, and improving the user's driving experience and satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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 any creative work.

[0009] Figure 1 It is a flow chart of a method for controlling the power consumption of an extended-range vehicle at ultra-high speed provided in an embodiment of the present application;

[0010] Figure 2 is a functional relationship diagram between the average vehicle speed influence coefficient and the average vehicle speed in an embodiment of the present application;

[0011] Figure 3 is a functional relationship diagram between the average energy consumption impact coefficient and the average energy consumption provided in the embodiment of the present application;

[0012] Figure 4 It is a structural schematic diagram of a power control device for ultra-high-speed driving of an extended-range vehicle provided in an embodiment of the present application;

[0013] Figure 5 It is a partial structural schematic diagram of a range-extended vehicle provided in an embodiment of the present application;

[0014] Figure 6 It is a structural schematic diagram of a controller provided in an embodiment of the present application. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1 In the first embodiment of the present application, a method for controlling the power consumption of an extended-range vehicle at ultra-high speed is provided, comprising the following steps:

[0017] S101, obtaining the remaining power of the vehicle, and when the remaining power is within a preset power range, detecting whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods;

[0018] S102, if the vehicle is in a first ultra-high-speed driving state within a first preset time period, detecting whether the range extender is currently in a state capable of being started normally;

[0019] S103, if the range extender is in a state capable of being started normally, determining whether the vehicle is in a second ultra-high-speed driving state within a second preset time period, the second preset time period being greater than the first preset time period;

[0020] S104, if the vehicle is in the second ultra-high speed driving state within the second preset time period, detecting whether the average power generation of the vehicle within the second preset time period exceeds a calibration value;

[0021] S105, if it exceeds, determining the speed energy consumption impact according to the average speed and average energy consumption of the vehicle within the second preset time, and adding the speed energy consumption impact to the energy consumption demand of the whole vehicle to obtain the requested power generation power of the generator;

[0022] S106, adjusting the power generation power of the range extender based on the power generation power requested by the generator.

[0023] In the embodiment of the present application, the remaining power of the vehicle is obtained, and when the remaining power is within a preset power range, whether the vehicle is in an ultra-high-speed driving state within a preset plurality of different preset time periods is detected; if the vehicle is in a first ultra-high-speed driving state within a first preset time period, whether the range extender is currently in a state capable of being started normally is detected; if the range extender is in a state capable of being started normally, whether the vehicle is in a second ultra-high-speed driving state within a second preset time period is determined, and the second preset time period is greater than the first preset time period; if the vehicle is in a second ultra-high-speed driving state within the second preset time period, whether the average power generation power of the vehicle within the second preset time period exceeds a calibration value is detected; if it exceeds, the speed energy consumption influence amount is determined according to the average vehicle speed and average energy consumption of the vehicle within the second preset time period, and the speed energy consumption influence amount is added to the energy consumption demand of the whole vehicle to obtain the requested power generation power of the generator; the power generation power of the range extender is adjusted based on the requested power generation power of the generator, so as to achieve the adjustment of the power generation power of the range extender when the vehicle power drops rapidly due to ultra-high-speed driving in the preset power range, thereby delaying and maintaining the power reduction speed of the power battery, and improving the driving experience and satisfaction of the user.

[0024] In some optional embodiments, the vehicle speed energy consumption impact is determined based on the average vehicle speed and average energy consumption within a second preset time period, and the vehicle speed energy consumption impact is added to the vehicle energy consumption demand to obtain the generator requested power generation power, including: based on the preset average vehicle speed impact coefficient and average energy consumption impact coefficient, determining the first product of the average vehicle speed and the average vehicle speed impact coefficient, and the second product of the average energy consumption and the average energy consumption impact coefficient; adding the first product to the second product to obtain the vehicle speed energy consumption impact; adding the vehicle speed energy consumption impact to the drive request power and the accessory request power to obtain the generator requested power generation power.

[0025] Specifically, the vehicle control adjusts the power generation request control strategy to the generator controller to increase the generator power generation request in advance. Assuming that P_r is the generator power generation request, P_c is the drive power request, P_a is the accessory power request, V_avg is the average vehicle speed, k1 is the average vehicle speed influence coefficient, E_avg is the average energy consumption of the vehicle, and k2 is the average energy consumption influence coefficient, then the range extender power generation calculation formula is: P_r = P_c + P_a + k1*V_avg + k2*E_avg. Where, see Figure 2 and Figure 3 , the coefficient K1 is linearly proportional to the average vehicle speed, and the coefficient K2 is linearly proportional to the average energy consumption of the whole vehicle (also called average energy consumption).

[0026] In an optional embodiment, the preset power interval includes a medium power interval; the remaining power of the vehicle is monitored, and when the remaining power of the vehicle is in the preset power interval, whether the vehicle is in a preset super-high-speed driving state is detected, including: when the remaining power is in the medium power interval, detecting whether the average vehicle speed and the average energy consumption of the vehicle within a first preset time period exceed their respective corresponding calibration values; when the average vehicle speed and the average vehicle energy consumption within the first preset time period both exceed their respective corresponding calibration values, determining that the vehicle is in a first super-high-speed driving state; when the average vehicle speed or the average vehicle energy consumption within the first preset time period does not exceed their respective corresponding calibration values, detecting whether the average vehicle speed and the average vehicle energy consumption within a second preset time period exceed their respective corresponding calibration values, and the second preset time period is greater than the first preset time period; when the average vehicle speed and the average vehicle energy consumption within the second preset time period both exceed their respective corresponding calibration values, determining that the vehicle is in a second super-high-speed driving state.

[0027] The specific power range corresponding to the medium power interval can be set according to the actual application scenario, and the embodiment of the present application does not limit this. Specifically, there are two judgments of ultra-high-speed driving states for the vehicle in the medium power interval, namely the first ultra-high-speed driving state and the second ultra-high-speed driving state. This embodiment implements corresponding measures respectively for the situation where the vehicle successively appears in the first ultra-high-speed driving state and the second ultra-high-speed driving state in consecutive time periods, including but not limited to adjusting the power generation power of the range extender according to a preset strategy to delay and maintain the speed of power battery power decline and improve the user's driving experience and satisfaction.

[0028] Next, in an optional embodiment, after detecting whether the range extender is currently in a state capable of starting normally, it also includes: if the range extender is in a state where it cannot start, according to multiple sub-power intervals divided by a preset power interval, issuing a power reminder message corresponding to the sub-power interval in which the remaining power is currently located; and when the range extender is in a state capable of starting normally and the vehicle is in a second ultra-high-speed driving state, it also includes: issuing a power reminder message corresponding to the second ultra-high-speed driving state.

[0029] On the basis of adjusting the power generation power of the range extender, corresponding power reminder information is issued to remind the user, so that the user can understand the current power changes of the vehicle in a timely manner.

[0030] Furthermore, in an optional embodiment, after issuing a power reminder message corresponding to the sub-power interval in which the remaining power is currently located, it also includes: issuing a voice prompt whether to switch to fuel mode, and waiting for an answer; if the user's answer is no, keeping the current vehicle mode unchanged; if the user's answer is yes, or no user answer is received, setting the vehicle mode to fuel mode.

[0031] When the remaining power is in the medium power range, the power is relatively sufficient. This embodiment reminds the user through the voice interaction system and confirms whether the user needs to switch the vehicle mode, so as to delay and maintain the power battery power decline rate by switching the vehicle mode, thereby improving the user's driving experience and satisfaction.

[0032] In an optional embodiment, the power interval also includes a high power interval; when the remaining power of the vehicle is in the high power interval, no power reminder is given and the current range extender power generation strategy is maintained. The high power interval can be a state where the battery is close to full charge. At this time, the power is sufficient, and even if the vehicle is in an ultra-high-speed driving state, no intervention can be temporarily performed, including but not limited to no power reminder and no range extender power generation power adjustment.

[0033] In an optional embodiment, the preset power interval includes a low power interval; the remaining power of the vehicle is monitored, and when the remaining power of the vehicle is in the preset power interval, whether the vehicle is in a preset ultra-high-speed driving state, including: when the remaining power is in the low power interval, according to the multiple low power sub-intervals divided by the low power interval, detecting whether the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value: when the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value, it is determined that the vehicle is in a third ultra-high-speed driving state.

[0034] This embodiment provides segmented reminders for situations where the vehicle is traveling at ultra-high speed in a low-battery range, causing the battery level to drop rapidly, so that the user can accurately obtain the remaining battery level of the vehicle when the battery is low.

[0035] Next, in some optional embodiments, when the vehicle battery power is in the low power range, when the vehicle is in the third ultra-high-speed driving state, operations corresponding to the low power sub-range where the vehicle's current remaining power is located are performed according to the multiple low power sub-ranges divided by the low power range, and the operations include issuing a power reminder message, limiting / disabling the available power of the thermal management system, and starting the range extender.

[0036] Different from other preset power ranges, due to the battery power disclosure, in addition to issuing corresponding power reminder information when the vehicle is driving at ultra-high speed and the battery power drops rapidly, the vehicle's power consumption will also be controlled to delay and maintain the speed of power battery power decline, thereby improving user driving experience and satisfaction.

[0037] Among them, when the vehicle enters the third ultra-high-speed driving state in the low-battery range, the content of the corresponding operation performed is not unique.

[0038] For example, in the above optional embodiment, detecting whether the average vehicle speed within the preset time period corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value includes:

[0039] When the remaining power is in the first low power sub-interval, detecting whether the average speed of the vehicle within a third preset time period exceeds a preset first calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0040] When the remaining power is in the second low power sub-interval, detecting whether the average speed of the vehicle within a fourth preset time period exceeds a preset second calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0041] When the remaining power is in the third low power sub-interval, detecting whether the average speed of the vehicle within the fifth preset time period exceeds a preset third calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0042] The first low-power sub-interval, the second low-power sub-interval and the third low-power sub-interval do not overlap each other, and the corresponding power ranges gradually decrease;

[0043] Execute operations corresponding to the low-power sub-interval of the vehicle's current remaining power, including:

[0044] When the remaining power of the vehicle is in the first low power sub-interval and is in the third ultra-high speed driving state, a first power reminder message corresponding to the first low power sub-interval is issued, and the range extender is started;

[0045] When the remaining power of the vehicle is in the second low power sub-interval and is in the third ultra-high speed driving state, a second power reminder message corresponding to the second low power sub-interval is issued, and the available power of the air conditioner and / or the PTC is limited;

[0046] When the remaining battery power of the vehicle is in the third low battery sub-interval and is in the third ultra-high-speed driving state, a third battery reminder message corresponding to the third low battery sub-interval is issued, and the air conditioner and / or PTC is set to a disabled state.

[0047] It can be seen that the embodiment of the present application divides the low-power interval into multiple low-power sub-intervals to provide step-by-step power reminders to the user and manage the vehicle's power consumption. Compared with traditional simple power reminders, it is more detailed and can delay and maintain the speed of power battery decline, thereby improving the user's driving experience and satisfaction.

[0048] In a second embodiment of the present application, a method for controlling the power consumption of an extended-range vehicle at ultra-high speed is provided, comprising the steps of:

[0049] S201, determining a power range in which the current remaining power of the vehicle power battery is located, where the power range includes a medium power range and a low power range;

[0050] S202, determining a driving state of the vehicle in a corresponding power range according to at least one of an average vehicle speed and an average vehicle energy consumption within a preset time period, wherein the driving state includes an ultra-high-speed driving state;

[0051] S203, when the remaining power is in the medium power range, if the vehicle is in an ultra-high-speed driving state, at least one of sending a corresponding power reminder message and adjusting the power generation strategy of the range extender is performed according to the state of the range extender, and the working state of the range extender includes an unable to start state and a able to start state;

[0052] S204, when the remaining power is in the low power interval, if the vehicle is in an ultra-high-speed driving state, then according to the multiple low power sub-intervals divided into the low power interval, at least one of sending a power reminder message corresponding to the low power sub-interval where the remaining power is currently located, limiting the available power of the thermal management system, and starting the range extender is executed.

[0053] The method for controlling the power of an extended-range vehicle during ultra-high-speed driving provided in an embodiment of the present application detects whether the vehicle is in an ultra-high-speed driving state in divided power intervals, and makes corresponding user reminders and adjusts the power generation power of the range extender according to the ultra-high-speed driving state of the vehicle in different power intervals, so as to delay and maintain the rate of power reduction of the power battery, thereby improving the user's driving experience and satisfaction.

[0054] In the above step S201, the power interval can be the entire power range of the power battery, that is, the entire range from the maximum power to the minimum power of the power battery; for example, the battery power corresponding to the medium power interval is 20%-100%, and the battery power corresponding to the low power interval is 20%-0%. Alternatively, the power interval can also be a partial power range of the power battery, that is, one or more specific parts within the power range of the power battery; for example, the battery power corresponding to the medium power interval is 10%-80%, and the battery power corresponding to the low power interval is 10%-0%. There is no overlap between the medium power interval and the low power interval, that is, any remaining power value of the power battery can only belong to one interval.

[0055] In addition, the number of power intervals can be two, for example, the above-mentioned medium power interval and low power interval. The number of power intervals can also be more than two. For example, in addition to the above-mentioned medium power interval and low power interval, the power interval also includes a high power interval, wherein the high power interval, the medium power interval and the low power interval are preferably mutually exclusive and exhaustive, that is, any power value at the same time can only belong to one interval; and multiple power interval exhaustion means that the high power interval, the medium power interval and the low power interval cover the entire power range from 0% to 100%, that is, no power value falls outside the interval. For example, the power of the high power interval is 80%-100%, the power of the medium power interval is 10%-80%, and the power of the low power interval is 0%-10%.

[0056] In an optional embodiment, the power interval also includes a high power interval. When the remaining power is in the high power interval, if the vehicle is in an ultra-high-speed driving state, the current range extender power generation strategy is maintained, and no power reminder is given. Since the power is sufficient in the high power interval, even if the vehicle is driving at an ultra-high speed, causing the battery power to drop rapidly, the battery power is still sufficient and will not be exhausted. Therefore, there is no need to give a power reminder or adjust the range extender power generation strategy.

[0057] In the above step S202, the remaining power is in different power intervals, and the conditions for determining that the vehicle is in an ultra-high-speed driving state are also different.

[0058] In an optional embodiment, in step S202, determining the driving state of the vehicle in the corresponding power range according to at least one indicator of the average vehicle speed and the average energy consumption of the vehicle within a preset time period includes:

[0059] When the remaining power is in the medium power range, detecting whether the average speed of the vehicle and the average energy consumption of the vehicle within the first preset time period exceed their respective corresponding calibration values;

[0060] When the average vehicle speed and the average vehicle energy consumption within the first preset time period both exceed their corresponding calibration values, it is determined that the vehicle is in a first ultra-high-speed driving state;

[0061] When the average vehicle speed or the average energy consumption of the whole vehicle within the first preset time period does not exceed the corresponding calibration values, detecting whether the average vehicle speed and the average energy consumption of the whole vehicle within the second preset time period exceed the corresponding calibration values, and the second preset time period is greater than the first preset time period;

[0062] When the average vehicle speed and the average vehicle energy consumption within the second preset time period both exceed their corresponding calibration values, it is determined that the vehicle is in the second ultra-high-speed driving state;

[0063] When the remaining power is in the low power interval, according to the multiple low power sub-intervals divided into the low power interval, it is detected whether the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value;

[0064] When the average vehicle speed within the preset time period corresponding to the low-power sub-interval in which the remaining power is currently located exceeds a preset calibration value, it is determined that the vehicle is in the third super-high-speed driving state.

[0065] For the medium power interval, the vehicle is judged whether it is in an ultra-high-speed driving state by detecting whether the average speed and average energy consumption of the vehicle in the first preset time period exceed the calibration value. If the vehicle is not detected in an ultra-high-speed driving state within the first preset time period, the vehicle is further judged whether it is in an ultra-high-speed driving state by detecting the average speed and average energy consumption of the vehicle in the second preset time period. In this way, the rapid decrease of the vehicle's power in the medium power interval can be detected, so that corresponding measures can be taken later to delay and maintain the speed of power battery power decrease.

[0066] For example, when the remaining power is greater than 10% and less than or equal to 80%, it is determined that the vehicle is in a medium power range, and the vehicle is detected whether the average speed within 5 minutes is greater than 150kph, and the average energy consumption of the whole vehicle is greater than 28kwh / 100km; if it is satisfied, it is determined that the vehicle is in an ultra-high-speed driving state, if not, it is further detected whether the vehicle meets the average speed of 10 minutes> 150kph, and the average energy consumption of the whole vehicle is greater than 28kwh / 100km, that is, by increasing the duration, it is further determined whether the vehicle is in ultra-high-speed driving within the preset duration. In the embodiment, the first preset duration is 5 minutes, the second preset duration is 10 minutes, and 150kph and 28kwh / 100km are the calibration values ​​corresponding to the average speed and the average energy consumption of the whole vehicle, respectively. Of course, the calibration values ​​of the first preset duration, the second preset duration, the average speed and the average energy consumption of the whole vehicle can be set according to the vehicle model and application requirements, and are not limited to the values ​​in the above examples, and the embodiments of the present application are not limited to this.

[0067] For the low-battery interval, by dividing the low-battery interval into multiple low-battery sub-intervals, it is gradually determined whether the vehicle is in an ultra-high-speed driving state, and the judgment condition is only the average vehicle speed within the preset time. Since the vehicle's fuel-saving power is low at this time, ultra-high-speed driving causes the power to drop rapidly, which makes it easy for the vehicle to run out of power. The risk of running out of power is therefore easy to occur. Therefore, the low-battery sub-intervals are used to determine whether the vehicle speed exceeds the calibrated value step by step, so that the user can be reminded and the corresponding power control strategy can be adjusted in time, thereby delaying and maintaining the speed of power battery decline, so that the vehicle can reach the recharging location for recharging before the power is exhausted.

[0068] Among them, the number of low-power sub-intervals can be determined according to the actual application scenario. The low-power interval can be divided into two low-power sub-intervals. For example, the low-power interval is 0%-10%, which is divided into 5%-10% and 0%-5%. Alternatively, the low-power interval can be divided into three or more low-power sub-intervals, for example, the first low-power sub-interval is 5%-10%, the second low-power sub-interval is 3%-5%, and the third low-power sub-interval is 0%-3%. The remaining power of the vehicle is in different low-power sub-intervals, and the conditions for detecting whether the vehicle is in ultra-high-speed driving will also be different.

[0069] Following the above embodiment, in an optional embodiment, detecting whether the average vehicle speed within a preset time period corresponding to the low power sub-interval where the remaining power is currently located exceeds a preset calibration value includes:

[0070] When the remaining power is in the first low power sub-interval, detecting whether the average speed of the vehicle within a third preset time period exceeds a preset first calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0071] When the remaining power is in the second low power sub-interval, detecting whether the average speed of the vehicle within a fourth preset time period exceeds a preset second calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0072] When the remaining power is in the third low power sub-interval, detecting whether the average speed of the vehicle within the fifth preset time period exceeds a preset third calibration value, and if so, determining that the vehicle is in a third super-high speed driving state;

[0073] The first low-battery sub-interval, the second low-battery sub-interval and the third low-battery sub-interval do not overlap with each other, and the corresponding battery ranges gradually decrease.

[0074] Specifically, the third preset duration, the fourth preset duration, and the fifth preset duration may be the same or different. If they are the same, the third preset duration, the fourth preset duration, and the fifth preset duration are all less than or equal to the first preset duration and the second preset duration, so as to quickly detect the driving state of the vehicle in the low-power interval. If they are different, the third preset duration, the fourth preset duration, and the fifth preset duration are reduced in sequence, because the power of the low-power sub-interval corresponding to the third preset duration, the fourth preset duration, and the fifth preset duration gradually decreases. By reducing the preset duration for calculating the average speed, it is beneficial to quickly detect the driving state of the vehicle, thereby determining whether it is in an ultra-high-speed driving state. Similarly, the calibration value compared with the average speed of the vehicle also becomes lower as the power of the low-power sub-interval decreases.

[0075] For example, when the remaining battery power of the vehicle is greater than 5% and less than or equal to 10%, it is in the first low-battery sub-interval, at which time the average speed of the vehicle within 5 minutes is detected to be greater than 150 kph, if so, the vehicle is judged to be in the third super-high-speed driving state; when the remaining battery power of the vehicle is greater than 3% and less than or equal to 5%, it is in the second low-battery sub-interval, at which time the average speed of the vehicle within 3 minutes is detected to be greater than 150 kph, if so, the vehicle is judged to be in the third super-high-speed driving state; when the remaining battery power of the vehicle is greater than 0% and less than or equal to 3%, it is in the second low-battery sub-interval, at which time the average speed of the vehicle within 1 minute is detected to be greater than 140 kph, if so, the vehicle is judged to be in the third super-high-speed driving state. It can be seen that the above 5min, 3min and 1min are the third preset time length, the fourth preset time length and the fifth preset time length respectively, and 150 kph is the first calibration value and the second calibration value, and the third calibration value is 140 kph. Of course, the third preset time length, the fourth preset time length, the fifth preset time length, the first calibration value, the second calibration value and the third calibration value mentioned above may also adopt other values, and the embodiment of the present application does not limit this.

[0076] When it is determined that the vehicle is in an ultra-high-speed driving state, the measures taken, such as reminding the user and adjusting the vehicle's power control strategy, will also be different according to the different power ranges in which the vehicle's current remaining power is located. In other words, the measures to delay and maintain the rate of power battery power decline will be different depending on the different power ranges in which the remaining power is located.

[0077] In an optional embodiment, in step S203, when the remaining power is in the medium power range, if the vehicle is in an ultra-high-speed driving state, at least one of sending a corresponding power reminder message and adjusting the power generation strategy of the range extender is performed according to the state of the range extender, including:

[0078] When the vehicle is in the first ultra-high-speed driving state, obtaining the state of the range extender, where the state of the range extender includes being unable to start and being able to start normally;

[0079] If the range extender is in an unstartable state, a first power reminder message corresponding to the medium power sub-interval where the remaining power is currently located is issued according to the multiple medium power sub-intervals divided by the medium power interval;

[0080] If the range extender is in a state capable of being started normally and the vehicle is in a second ultra-high speed driving state, detecting whether the average power generation of the vehicle within a first preset time period exceeds a calibration value;

[0081] If it exceeds, adjust the power generation of the range extender according to the following formula:

[0082] P_r=P_c+P_a+k1*V_avg+k2*E_avg;

[0083] Among them, P_r represents the generator requested power, P_c represents the drive requested power, P_a represents the accessory requested power, V_avg represents the average vehicle speed, k1 represents the average vehicle speed influence coefficient, E_avg represents the average energy consumption, and k2 represents the average energy consumption influence coefficient.

[0084] Specifically, the range extender is an auxiliary power device, which usually includes a small internal combustion engine and a generator, and is used to provide additional electrical energy when the battery power is low. That is, when the battery power of the electric vehicle is low and cannot meet the demand for continued driving, the range extender starts and operates, generates electricity through the generator, charges the battery or directly powers the motor, thereby extending the vehicle's mileage. The range extender cannot start and can start normally are only two working states of the range extender. In practice, it can be determined whether the range extender cannot start by reading the state value of the range extender. As for the reason for the failure to start, this application does not focus on it.

[0085] When the range extender cannot be started, according to the different medium power sub-intervals in which the remaining power is located, a first power reminder message corresponding to the medium power sub-interval in which the remaining power is currently located is issued. The number of medium power sub-intervals is not unique.

[0086] Optionally, the number of medium power sub-intervals is at least two. For example, in an optional embodiment, when it is determined that the vehicle is in the first ultra-high-speed driving state, assuming that the medium power interval is 10%-80%, it can be divided into three medium power sub-intervals: >30%, ≤30% and ≤15%; when it is determined that the vehicle is in the second ultra-high-speed driving state, assuming that the medium power interval is 10%-80%, it can be divided into two medium power sub-intervals: ≥30% and ≤30%.

[0087] For example, the vehicle is in the first super-high-speed driving state, and the range extender cannot be started. At this time, the medium power interval is divided into three medium power sub-intervals of >30%, ≤30% and ≤15%. If the remaining power is >30%, the vehicle controller sends a signal that the vehicle energy consumption is too high. After receiving the signal, the instrument controller will pop up a prompt: During pure electric driving, the vehicle speed and energy consumption are too high, and the battery power drops too fast. It is recommended to control the vehicle speed within 140kph. If this condition is continuously met, it will be prompted once every 3 minutes. If the remaining power is ≤30%, a pop-up prompt will be issued: During pure electric driving, the battery power is low, the vehicle speed and energy consumption are too high, and the range extender cannot be started. It is recommended to control the vehicle speed within 100kph. Among them, if the conditions are continuously met, it will be prompted once every 1 minute. If the remaining power is ≤15%, the instrument will continue to prompt: The battery power is low, the speed is too high, and the range extender cannot be started. It is recommended to control the vehicle speed within 100kph. Please charge as soon as possible.

[0088] When the range extender can start normally, it is detected whether the average power generation of the vehicle in the first preset time exceeds the calibration value. If it exceeds, it means that the power generation request power is high at this time, so as to determine whether to adjust the power generation of the range extender. For example, it is detected whether the average power generation request power P_r of the vehicle in 5 minutes is greater than or equal to 50kw.

[0089] Specifically, the vehicle control adjusts the power request control strategy to the generator controller to increase the generator power request in advance, where the range extender power calculation formula is: P_r = P_c + P_a + k1 * V_avg + k2 * E_avg, where P_r is the generator power request, P_c is the drive power request, P_a is the accessory power request, V_avg is the average vehicle speed, k1 is the average vehicle speed influence coefficient, E_avg is the average energy consumption of the vehicle, and k2 is the average energy consumption influence coefficient. For example, see Figure 2 and Figure 3, the coefficient K1 is linearly proportional to the average vehicle speed, and the coefficient K2 is linearly proportional to the average energy consumption of the whole vehicle (also called average energy consumption).

[0090] Furthermore, in an optional embodiment, if the range extender is in a state capable of normal startup and the vehicle is in a second ultra-high-speed driving state, detecting whether the average power generation power of the vehicle within a first preset time period exceeds a first calibration value also includes; if exceeded, issuing a second power reminder message corresponding to the medium power sub-interval in which the remaining power is currently located according to a plurality of medium power sub-intervals divided into the medium power interval.

[0091] Specifically, while adjusting the power generation power of the range extender, a corresponding second power reminder message is sent to the user according to the medium power sub-interval where the remaining power is currently located.

[0092] For example, the vehicle is in the second ultra-high-speed driving state, and the range extender can start normally. At this time, the medium power interval is divided into two medium power sub-intervals of ≥30% and ≤30%. If the remaining power is greater than 30%, a pop-up box prompts: the vehicle speed and energy consumption are too high, and the power generation cannot maintain the battery power. It is recommended to control the vehicle speed within 140kph (if the conditions are met continuously, the prompt will be given once every 10 minutes). If the remaining power is ≤30%, a pop-up box prompts: the vehicle speed and energy consumption are too high, and the power generation cannot maintain the battery power. It is recommended to control the vehicle speed within 140kph (if the conditions are met continuously, the prompt will be given once every 5 minutes).

[0093] Furthermore, in an optional embodiment, after issuing the first power reminder information corresponding to the medium power sub-interval where the remaining power is currently located, the method further includes:

[0094] A voice prompt is issued asking whether to switch to fuel mode and waiting for a response;

[0095] If the user's answer is no, the current vehicle mode remains unchanged;

[0096] If a yes answer is received from the user, or if no answer is received from the user, the vehicle mode is set to the fuel mode.

[0097] In this embodiment, through power reminder and voice interaction, the system actively communicates with the user when the battery power drops to the medium power sub-interval, asking whether to switch to fuel mode. Based on the user's feedback, the system decides whether to switch modes, thereby ensuring the vehicle's endurance and driving experience when the battery power is low.

[0098] In the above step S204, according to the multiple low-power sub-intervals divided into the low-power interval, at least one of issuing a power reminder message corresponding to the low-power sub-interval where the remaining power is currently located and limiting the available power of the thermal management system is executed, and the specific implementation method is not unique.

[0099] In an optional embodiment, following the above-mentioned embodiment of determining that the vehicle is in an ultra-high-speed driving state in the low-power interval, in step S204, when the remaining power is in the low-power interval, if the vehicle is in an ultra-high-speed driving state, then according to the multiple low-power sub-intervals divided by the low-power interval, at least one of sending a power reminder message corresponding to the low-power sub-interval where the remaining power is currently located and limiting the available power of the thermal management system is executed, including:

[0100] When the remaining power of the vehicle is in the first low power sub-interval and is in the third ultra-high speed driving state, a third power reminder message is issued and the range extender is started;

[0101] When the remaining power of the vehicle is in the second low power sub-interval and is in the third ultra-high speed driving state, a fourth power reminder message is issued and the available power of the air conditioner and / or the PTC is limited;

[0102] When the remaining battery power of the vehicle is in the third low battery sub-interval and is in the third ultra-high-speed driving state, a fifth battery power reminder message is issued, and the air conditioner and / or PTC are set to a disabled state.

[0103] Specifically, PTC (abbreviation of Positive Temperature Coefficient, translated as positive temperature coefficient resistor), PTC and air conditioning are the two main power-consuming devices in extended-range vehicles. Limiting the available power of PTC and air conditioning can reduce the battery power consumed by these devices, thereby delaying and maintaining the rate of decline of the power battery.

[0104] In this embodiment, when the vehicle has low remaining power and is in an ultra-high-speed driving state, the vehicle is divided into multiple low-power sub-intervals and power management measures such as issuing power reminder information, starting the range extender, limiting or disabling the power of the thermal management system are taken to ensure the vehicle's endurance and driving safety. This partition management and strategy adjustment can not only optimize power usage, but also maintain the normal operation of the vehicle through various means at critical moments.

[0105] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0106] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0107] See also Figure 4 In the third embodiment of the present application, a power control device for ultra-high-speed driving of an extended-range vehicle is provided, which includes:

[0108] The first detection module 401 is configured to obtain the remaining power of the vehicle, and when the remaining power is within a preset power interval, detect whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods;

[0109] The second detection module 402 is configured to detect whether the range extender is currently in a state capable of being started normally if the vehicle is in a first ultra-high-speed driving state within a first preset time period;

[0110] The third detection module 403 is configured to determine whether the vehicle is in a second ultra-high-speed driving state within a second preset time period if the range extender is in a state capable of normal start-up, and the second preset time period is greater than the first preset time period;

[0111] The fourth detection module 404 is configured to detect whether the average power generation of the vehicle in the second preset time period exceeds a calibration value if the vehicle is in the second ultra-high speed driving state in the second preset time period;

[0112] The power strategy module 405 is configured to determine the speed energy consumption impact amount according to the average speed and average energy consumption of the vehicle within the second preset time period if it exceeds, and add the speed energy consumption impact amount to the energy consumption demand of the whole vehicle to obtain the requested power generation power of the generator;

[0113] The power control module 406 is configured to adjust the power generation of the range extender based on the power generation requested by the generator.

[0114] In the embodiment of the present application, the remaining power of the vehicle is obtained, and when the remaining power is within a preset power range, whether the vehicle is in an ultra-high-speed driving state within a preset plurality of different preset time periods is detected; if the vehicle is in a first ultra-high-speed driving state within a first preset time period, whether the range extender is currently in a state capable of being started normally is detected; if the range extender is in a state capable of being started normally, whether the vehicle is in a second ultra-high-speed driving state within a second preset time period is determined, and the second preset time period is greater than the first preset time period; if the vehicle is in a second ultra-high-speed driving state within the second preset time period, whether the average power generation power of the vehicle within the second preset time period exceeds a calibration value is detected; if it exceeds, the speed energy consumption influence amount is determined according to the average vehicle speed and average energy consumption of the vehicle within the second preset time period, and the speed energy consumption influence amount is added to the energy consumption demand of the whole vehicle to obtain the requested power generation power of the generator; the power generation power of the range extender is adjusted based on the requested power generation power of the generator, so as to achieve the adjustment of the power generation power of the range extender when the vehicle power drops rapidly due to ultra-high-speed driving in the preset power range, thereby delaying and maintaining the power reduction speed of the power battery, and improving the driving experience and satisfaction of the user.

[0115] In some optional embodiments, the preset power interval includes a medium power interval;

[0116] The first detection module 401 is configured to detect whether the average speed of the vehicle and the average energy consumption of the whole vehicle within a first preset time period exceed their respective corresponding calibration values ​​when the remaining power is in a medium power range; when the average speed and the average energy consumption of the whole vehicle within the first preset time period both exceed their respective corresponding calibration values, determine that the vehicle is in a first super-high-speed driving state; when the average speed or the average energy consumption of the whole vehicle within the first preset time period does not exceed their respective corresponding calibration values, detect whether the average speed and the average energy consumption of the vehicle within a second preset time period exceed their respective corresponding calibration values, and the second preset time period is greater than the first preset time period; when the average speed and the average energy consumption of the whole vehicle within the second preset time period both exceed their respective corresponding calibration values, determine that the vehicle is in a second super-high-speed driving state.

[0117] In some optional embodiments, the power control device for ultra-high-speed driving of the extended-range vehicle further includes:

[0118] The first reminder module 407 is configured to, after detecting whether the range extender is currently in a state capable of being started normally, if the range extender is in a state where it cannot be started, send a power reminder message corresponding to the sub-power interval in which the remaining power is currently located according to multiple sub-power intervals divided by a preset power interval; and when the range extender is in a state capable of being started normally and the vehicle is in a second ultra-high-speed driving state, also include: sending a power reminder message corresponding to the second ultra-high-speed driving state.

[0119] In some optional embodiments, the power control device for ultra-high-speed driving of the extended-range vehicle further includes:

[0120] The mode conversion module 408 is configured to, after issuing a power reminder message corresponding to the sub-power interval in which the remaining power is currently located, issue a voice prompt on whether to switch to the fuel mode and wait for an answer; if the user's answer is no, keep the current vehicle mode unchanged; if the user's answer is yes, or no user answer is received, set the vehicle mode to the fuel mode.

[0121] In some optional embodiments, the power strategy module 405 is configured to determine a first product of the average vehicle speed and the average vehicle speed influence coefficient, and a second product of the average energy consumption and the average energy consumption influence coefficient based on a preset average vehicle speed influence coefficient and an average energy consumption influence coefficient, wherein the average vehicle speed influence coefficient is in a linear proportional function relationship with the average vehicle speed, and the average energy consumption influence coefficient is in a linear proportional function relationship with the average energy consumption of the whole vehicle; add the first product and the second product to obtain the vehicle speed energy consumption influence amount; add the vehicle speed energy consumption influence amount to the drive request power and the accessory request power to obtain the generator request power.

[0122] In some optional embodiments, the power interval also includes a high power interval; the first reminder module 407 is configured not to issue a power reminder when the remaining power of the vehicle is in the high power interval, and to maintain the current range extender power generation strategy.

[0123] In some optional embodiments, the preset power interval includes a low power interval;

[0124] The above-mentioned first detection module 401 is configured to detect, when the remaining power is in the low power interval, whether the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value according to the multiple low power sub-intervals divided into the low power interval: when the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value, it is determined that the vehicle is in the third ultra-high-speed driving state.

[0125] In some optional embodiments, the power interval also includes a high power interval; the power control device for ultra-high-speed driving of the extended-range vehicle also includes:

[0126] The second reminder module 409 is configured to, when the vehicle is in the third ultra-high-speed driving state, perform an operation corresponding to the low-power sub-interval where the vehicle's current remaining power is located according to the multiple low-power sub-intervals divided into the low-power interval, and the operation includes at least one of issuing a power reminder message, limiting / disabling the available power of the thermal management system, and starting the range extender.

[0127] In some optional embodiments, the first detection module 401 is configured to detect whether the average speed of the vehicle within a third preset time period exceeds a preset first calibration value when the remaining power is in the first low power sub-interval, and if so, determine that the vehicle is in a third super-high-speed driving state; when the remaining power is in the second low power sub-interval, detect whether the average speed of the vehicle within a fourth preset time period exceeds a preset second calibration value, and if so, determine that the vehicle is in a third super-high-speed driving state; when the remaining power is in the third low power sub-interval, detect whether the average speed of the vehicle within a fifth preset time period exceeds a preset third calibration value, and if so, determine that the vehicle is in a third super-high-speed driving state; wherein, the first low power sub-interval and the second low power sub-interval are The first reminder module 407 is configured to send out a first power reminder message corresponding to the first low power sub-interval and start the range extender when the remaining power of the vehicle is in the first low power sub-interval and is in the third ultra-high-speed driving state; send out a second power reminder message corresponding to the second low power sub-interval and limit the available power of the air conditioner and / or PTC when the remaining power of the vehicle is in the second low power sub-interval and is in the third ultra-high-speed driving state; send out a third power reminder message corresponding to the third low power sub-interval and set the air conditioner and / or PTC to a disabled state when the remaining power of the vehicle is in the third low power sub-interval and is in the third ultra-high-speed driving state.

[0128] See Figure 5 In a fourth embodiment of the present application, a range-extended vehicle 5 is provided, which includes a controller 51 and a battery management system 52 , and the controller 51 is connected to the battery management system 52 .

[0129] An extended-range vehicle is a vehicle that combines pure electric power with traditional fuel power. It is mainly driven by an electric motor, but when the battery power is low, the range extender (usually an internal combustion engine) will be started to charge the battery, thereby extending the driving range. Its main structure includes but is not limited to: power battery, electric motor, range extender (internal combustion engine), vehicle control unit (VCU, abbreviation of Vehicle Control Unit) and battery management system (BMS). Optionally, the controller 51 can be a vehicle controller.

[0130] The battery management system 52 is specifically used to monitor and manage the power battery to ensure its safe, reliable and efficient operation. The main functions of the battery management system include but are not limited to battery monitoring, power management, thermal management and safety protection.

[0131] Specifically, taking the controller as a vehicle controller as an example, the battery management system and the vehicle controller can exchange information. For example, the battery management system monitors the battery status and transmits data such as voltage, current, temperature, SOC, SOH, etc. to the vehicle controller. The vehicle controller determines the target battery power range corresponding to the current battery power of the vehicle based on these data. In addition, the vehicle controller can also send instructions to the battery management system to adjust the battery charge / discharge rate, enable or disable the battery cooling system, etc.

[0132] In some alternative embodiments, see Figure 6 , the controller 51 includes: a processor 511, a memory 512, and a computer program 513 stored in the memory 512 and executable on the processor 511. When the processor 511 executes the computer program 513, the steps in the above-mentioned method embodiments are implemented. Alternatively, when the processor 511 executes the computer program 513, the functions of the modules in the above-mentioned device embodiments are implemented.

[0133] The controller may include but is not limited to a processor 511 and a memory 512. Those skilled in the art will appreciate that Figure 6 The controller is merely an example and does not constitute a limitation of the controller, and may include more or fewer components than shown in the figure, or different components.

[0134] The processor 511 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.

[0135] The memory 512 may be an internal storage unit of the controller, for example, a hard disk or memory of the controller. The memory 512 may also be an external storage device of the controller, for example, a plug-in hard disk equipped on the controller, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. The memory 512 may also include both an internal storage unit of the controller and an external storage device. The memory 512 is used to store computer programs and other programs and data required by the electronic device.

[0136] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional 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 modules in the embodiment can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0137] If the integrated module is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium (e.g., 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, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, which may be in source code form, object code form, executable file or some intermediate form. Computer-readable storage media may include: any entity or device capable of carrying 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.

[0138] The above embodiments 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, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These 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 method for controlling the power consumption of an extended-range vehicle at ultra-high speed, characterized in that: include: Obtaining the remaining power of the vehicle, and if the remaining power is within a preset power range, detecting whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods; If the vehicle is in the first ultra-high-speed driving state within the first preset time, detecting whether the range extender is currently in a state capable of being started normally; If the range extender is in a state capable of being started normally, determining whether the vehicle is in a second ultra-high-speed driving state within a second preset time period, the second preset time period being greater than the first preset time period; If the vehicle is in the second ultra-high speed driving state within the second preset time period, detecting whether the average power generation of the vehicle within the second preset time period exceeds the calibration value; If it exceeds, determining the speed energy consumption impact according to the average speed and average energy consumption of the vehicle within the second preset time period, and adding the speed energy consumption impact to the vehicle energy consumption demand to obtain the generator requested power generation; The power generation power of the range extender is adjusted based on the requested power generation power of the generator.

2. The method according to claim 1, characterized in that The preset power interval includes a medium power interval; When the remaining power is within the preset power range, detecting whether the vehicle is in an ultra-high speed driving state within a plurality of preset different preset time periods includes: When the remaining power is in the medium power range, detecting whether the average speed and the average energy consumption of the vehicle within the first preset time period exceed their respective corresponding calibration values; When the average vehicle speed and the average vehicle energy consumption within the first preset time period both exceed their corresponding calibration values, it is determined that the vehicle is in a first ultra-high-speed driving state; When the average vehicle speed or the average energy consumption of the whole vehicle within the first preset time period does not exceed their respective corresponding calibration values, it is detected whether the average vehicle speed and the average energy consumption of the whole vehicle within the second preset time period exceed their respective corresponding calibration values, and the second preset time period is greater than the first preset time period; when the average vehicle speed and the average energy consumption of the whole vehicle within the second preset time period both exceed their respective corresponding calibration values, it is determined that the vehicle is in the second ultra-high-speed driving state.

3. The method according to claim 1, characterized in that After detecting whether the range extender is currently in a state capable of being started normally, the method further includes: If the range extender is in a state where it cannot be started, a power reminder message corresponding to the sub-power interval where the remaining power is currently located is issued according to the multiple sub-power intervals divided by the preset power interval; And when the range extender is in a state capable of normal startup and the vehicle is in a second super-high-speed driving state, it also includes: issuing a power reminder message corresponding to the second super-high-speed driving state.

4. The method according to claim 3, characterized in that After sending the power reminder information corresponding to the sub-power interval where the remaining power is currently located, it also includes: A voice prompt is issued asking whether to switch to fuel mode and waiting for a response; If the user's answer is no, the current vehicle mode remains unchanged; If a yes answer is received from the user, or if no answer is received from the user, the vehicle mode is set to the fuel mode.

5. The method according to claim 1, characterized in that: The step of determining the vehicle speed energy consumption influence according to the average vehicle speed and average energy consumption of the vehicle within the second preset time period, and adding the vehicle speed energy consumption influence to the vehicle energy consumption demand to obtain the generator requested power generation power includes: Based on the preset average vehicle speed influence coefficient and the average energy consumption influence coefficient, determine a first product of the average vehicle speed and the average vehicle speed influence coefficient, and a second product of the average energy consumption and the average energy consumption influence coefficient, wherein the average vehicle speed influence coefficient is in a linear proportional function relationship with the average vehicle speed, and the average energy consumption influence coefficient is in a linear proportional function relationship with the average energy consumption of the whole vehicle; Adding the first product to the second product to obtain the vehicle speed energy consumption impact; The vehicle speed energy consumption influence amount is added to the driving request power and the accessory request power to obtain the generator request power.

6. The method according to any one of claims 1 to 5, characterized in that The preset power interval includes a low power interval; When the remaining power is within the preset power range, detecting whether the vehicle is in an ultra-high speed driving state within a plurality of preset different preset time periods includes: When the remaining power is in the low power interval, based on the multiple low power sub-intervals divided into the low power interval, detect whether the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value: when the average vehicle speed within the preset time length corresponding to the low power sub-interval where the remaining power is currently located exceeds the preset calibration value, it is determined that the vehicle is in the third ultra-high-speed driving state.

7. The method according to claim 6, characterized in that Also includes: When the vehicle is in the third ultra-high-speed driving state, an operation corresponding to the low-power sub-interval in which the current remaining power of the vehicle is located is performed according to the multiple low-power sub-intervals divided into the low-power interval, and the operation includes at least one of issuing a power reminder message, limiting / disabling the available power of the thermal management system, and starting the range extender.

8. The method according to claim 7, characterized in that Detecting whether the average vehicle speed within a preset time period corresponding to the low power sub-interval where the remaining power is currently located exceeds a preset calibration value, including: When the remaining power is in the first low power sub-interval, detecting whether the average speed of the vehicle within a third preset time period exceeds a preset first calibration value, and if so, determining that the vehicle is in a third super-high speed driving state; When the remaining power is in the second low power sub-interval, detecting whether the average speed of the vehicle within a fourth preset time period exceeds a preset second calibration value, and if so, determining that the vehicle is in a third super-high speed driving state; When the remaining power is in the third low power sub-interval, detecting whether the average speed of the vehicle within the fifth preset time period exceeds a preset third calibration value, and if so, determining that the vehicle is in a third super-high speed driving state; The first low-power sub-interval, the second low-power sub-interval and the third low-power sub-interval do not overlap each other, and the corresponding power ranges gradually decrease; The performing of the operation corresponding to the low power sub-interval where the current remaining power of the vehicle is located includes: When the remaining power of the vehicle is in the first low power sub-interval and is in the third ultra-high speed driving state, a first power reminder message corresponding to the first low power sub-interval is issued, and the range extender is started; When the remaining power of the vehicle is in the second low power sub-interval and is in the third ultra-high speed driving state, a second power reminder message corresponding to the second low power sub-interval is issued, and the available power of the air conditioner and / or the PTC is limited; When the remaining battery power of the vehicle is in the third low battery sub-interval and is in the third ultra-high-speed driving state, a third battery reminder message corresponding to the third low battery sub-interval is issued, and the air conditioner and / or PTC is set to a disabled state.

9. A power control device for ultra-high-speed driving of an extended-range vehicle, characterized in that: include: A first detection module is configured to obtain a remaining power of the vehicle, and when the remaining power is within a preset power interval, detect whether the vehicle is in an ultra-high-speed driving state within a plurality of preset different preset time periods; The second detection module is configured to detect whether the range extender is currently in a state capable of being started normally if the vehicle is in a first ultra-high-speed driving state within a first preset time period; A third detection module is configured to determine whether the vehicle is in a second ultra-high-speed driving state within a second preset time period if the range extender is in a state capable of being started normally, and the second preset time period is greater than the first preset time period; A fourth detection module is configured to detect whether the average power generation of the vehicle in the second preset time period exceeds a calibration value if the vehicle is in the second ultra-high speed driving state in the second preset time period; The power strategy module is configured to determine the vehicle speed energy consumption impact amount according to the average vehicle speed and average energy consumption of the vehicle within the second preset time period if it exceeds, and add the vehicle speed energy consumption impact amount to the vehicle energy consumption demand to obtain the generator requested power generation power; The power control module is configured to adjust the power generation power of the range extender based on the power generation power requested by the generator.

10. A range-extended vehicle, characterized in that: It includes a controller and a battery management system, wherein the controller is connected to the battery management system and includes at least a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method as claimed in any one of claims 1 to 8 when executing the computer program.

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