CN113449377B - Vehicle power distribution strategy evaluation method and device based on cycle working conditions - Google Patents
Vehicle power distribution strategy evaluation method and device based on cycle working conditions Download PDFInfo
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- CN113449377B CN113449377B CN202110679772.2A CN202110679772A CN113449377B CN 113449377 B CN113449377 B CN 113449377B CN 202110679772 A CN202110679772 A CN 202110679772A CN 113449377 B CN113449377 B CN 113449377B
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- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
Abstract
The invention discloses a vehicle power distribution strategy evaluation method and a device based on a cycle working condition, the method obtains the power consumption of a vehicle to be evaluated under a single cycle working condition in the process of a pre-test and a cycle working condition test by the vehicle to be evaluated, records the current electric quantity of a power battery pack and the residual quantity of hydrogen of the vehicle to be evaluated, namely third electric quantity and the residual quantities of first and second hydrogen in the test process, obtains the hydrogen consumption of the vehicle to be evaluated under the single cycle working condition according to the power consumption, the third electric quantity, the preset electric quantity and the residual quantities of the first and second hydrogen when the third electric quantity is larger than the preset electric quantity or obtains the hydrogen consumption of the vehicle to be evaluated under the single cycle working condition according to the residual quantities of the first and second hydrogen when the third electric quantity is equal to the preset electric quantity, and finally compares the hydrogen consumption under different power distribution strategies to take the power distribution strategy with the lowest hydrogen consumption as an optimal power distribution strategy, the method can accurately evaluate the advantages and disadvantages of different power distribution strategies of the vehicle under the circulating working condition.
Description
Technical Field
The invention relates to the field of fuel cell hybrid electric vehicles, in particular to a vehicle power distribution strategy evaluation method and device based on a cycle working condition.
Background
As the hydrogen fuel technology in China starts late and develops relatively slowly, along with the increasing prominence of energy shortage and environmental problems, China pays attention to the research and development of hydrogen fuel cell vehicles. At present, each large hydrogen fuel vehicle enterprise has a power distribution control strategy, and under different power distribution strategies, the whole vehicle carries out tests under the same working condition, and the consumed electric quantity and the hydrogen quantity of a power battery pack are different. However, for the cyclic working condition, a complete evaluation method for evaluating the advantages and disadvantages of different power distribution strategies is not provided at present.
Disclosure of Invention
The invention provides a vehicle power distribution strategy evaluation method and device based on a cycle working condition, and aims to solve the technical problem that the advantages and disadvantages of different power distribution strategies cannot be evaluated based on the cycle working condition in the prior art.
In order to solve the above technical problem, in a first aspect, an embodiment of the present invention provides a vehicle power distribution strategy evaluation method based on a cycle condition, including:
performing a cycle working condition pre-test on a vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle working condition;
Setting an initialization state of the vehicle to be evaluated, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of an evaluation environment within a preset temperature range, detecting the current electric quantity of a power battery pack to obtain a first electric quantity for the vehicle to be evaluated, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of the first hydrogen when the first electric quantity is equal to the preset electric quantity;
performing a cycle condition test on the vehicle to be evaluated, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, stopping the cycle condition test when the second electric quantity is greater than or equal to the preset electric quantity, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within the preset temperature range again, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as a second residual quantity of hydrogen when the third electric quantity is greater than or equal to the preset electric quantity;
when the third electric quantity is larger than the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity;
When the third electric quantity is equal to the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition according to the first hydrogen residual quantity and the second hydrogen residual quantity;
and comparing the hydrogen consumption under different power distribution strategies, and taking the power distribution strategy with the lowest hydrogen consumption as an optimal power distribution strategy.
Further, the vehicle to be evaluated is subjected to a cycle condition pre-test to obtain the power consumption of the vehicle to be evaluated under a single cycle condition, and the method specifically comprises the following steps:
selecting a hydrogen fuel vehicle with the load within a preset range as the vehicle to be evaluated, charging the vehicle to be evaluated to full power and full load of hydrogen, and driving the vehicle to be evaluated to a hub rack;
fixing the vehicle to be evaluated on the rotary hub rack, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance; the method comprises the following steps that a neutral gear sliding test is carried out on a vehicle to be evaluated, and sliding resistance is obtained;
and performing multiple cycle working condition pre-tests on the vehicle to be evaluated according to the cycle working condition test standard, and averaging the total power consumption of the vehicle to be evaluated under multiple cycle working conditions to obtain the power consumption.
Further, the setting of the initialization state of the vehicle to be evaluated and the control of the temperature difference between each system temperature of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range specifically include:
and controlling the vehicle to be evaluated to start a fuel-electric mode to charge the power battery pack to the preset electric quantity, standing the vehicle to be evaluated in the evaluation environment for a preset time, and adjusting the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within the preset temperature range.
Further, the detecting a current electric quantity of the power battery pack to obtain a first electric quantity for the high voltage electricity on the vehicle to be evaluated, and recording the hydrogen remaining quantity of the vehicle to be evaluated as the first hydrogen remaining quantity when the first electric quantity is equal to a preset electric quantity, further includes:
when the first electric quantity is not equal to the preset electric quantity, the power battery pack is charged in a fuel mode or consumes power through a load in the vehicle until the first electric quantity is adjusted to be equal to the preset electric quantity;
and the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment is controlled to be within the preset temperature range again, and when the first electric quantity is equal to the preset electric quantity at the moment of high voltage of the vehicle to be evaluated, the residual quantity of the hydrogen of the vehicle to be evaluated is recorded as the first residual quantity of the hydrogen.
Further, the vehicle to be evaluated is subjected to a cycle condition test, the current electric quantity of the power battery pack is detected to obtain a second electric quantity, when the second electric quantity is larger than or equal to the preset electric quantity, the cycle condition test is stopped, the temperature difference between the system temperature of the vehicle to be evaluated and the evaluation environment temperature is controlled again within the preset temperature range, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, and when the third electric quantity is larger than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as a second residual quantity of hydrogen, specifically:
performing a plurality of times of cycle condition tests on the vehicle to be evaluated according to a cycle condition test standard, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, controlling the vehicle to be evaluated to be parked in situ and charging the power battery pack through a fuel-electric mode when the second electric quantity is smaller than the preset electric quantity until the second electric quantity is adjusted to be equal to the preset electric quantity, and stopping the cycle condition test when the second electric quantity is larger than or equal to the preset electric quantity;
and the temperature difference between the system temperature of the vehicle to be evaluated and the evaluation environment temperature is controlled to be within the preset temperature range, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, when the third electric quantity is smaller than the preset electric quantity, the vehicle to be evaluated is controlled to stop in place and charge the power battery pack through a fuel-electric mode until the third electric quantity is adjusted to be equal to the preset electric quantity, and when the third electric quantity is larger than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as the residual quantity of the second hydrogen.
Further, when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single circulation condition is obtained according to the electric power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity, and specifically:
when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (the second hydrogen consumption amount-the first hydrogen consumption amount)/[ (the third electric quantity-the preset electric quantity)/the electric power consumption amount + number of cycles test ].
Further, when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the first hydrogen residual quantity and the second hydrogen residual quantity, and specifically:
when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (the second hydrogen consumption-the first hydrogen consumption)/number of cycles tested.
In a second aspect, an embodiment of the present invention provides a vehicle power distribution strategy evaluation device based on a cycle condition, including:
The power consumption obtaining module is used for carrying out a cycle working condition pre-test on the vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle working condition;
the first recording module is used for setting an initialization state of the vehicle to be evaluated, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of an evaluation environment to be within a preset temperature range, detecting the current electric quantity of a power battery pack to obtain a first electric quantity for the vehicle to be evaluated, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of the first hydrogen when the first electric quantity is equal to the preset electric quantity;
the second recording module is used for carrying out a cycle condition test on the vehicle to be evaluated, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, stopping the cycle condition test when the second electric quantity is larger than or equal to the preset electric quantity, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within the preset temperature range again, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of second hydrogen when the third electric quantity is larger than or equal to the preset electric quantity;
The calculation module is used for obtaining the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity when the third electric quantity is larger than the preset electric quantity;
the calculation module is further configured to obtain the hydrogen consumption of the vehicle to be evaluated under a single cycle condition according to the first hydrogen residual amount and the second hydrogen residual amount when the third electric quantity is equal to the preset electric quantity;
and the evaluation module is used for comparing the hydrogen consumption under different power distribution strategies and taking the power distribution strategy with the lowest hydrogen consumption as the optimal power distribution strategy.
Further, when the third electric quantity is greater than the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single cycle condition according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity, specifically:
when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (the second hydrogen consumption amount-the first hydrogen consumption amount)/[ (the third electric quantity-the preset electric quantity)/the electric power consumption amount + number of cycles test ].
Further, when the third electric quantity is equal to the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition according to the first hydrogen residual quantity and the second hydrogen residual quantity, specifically:
when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (the second hydrogen consumption-the first hydrogen consumption)/number of cycles tested.
The embodiment of the invention has the following beneficial effects:
the method comprises the steps of performing a circulation working condition pre-test and a circulation working condition test on a vehicle to be evaluated, obtaining the power consumption of the vehicle to be evaluated under a single circulation working condition in the pre-test process, recording the current electric quantity of a power battery pack and the residual hydrogen quantity of the vehicle to be evaluated in the test process, namely the third electric quantity and the residual first and second hydrogen quantities, obtaining the hydrogen consumption of the vehicle to be evaluated under the single circulation working condition according to the power consumption, the third electric quantity, the preset electric quantity and the residual first and second hydrogen quantities when the third electric quantity is larger than the preset electric quantity or according to the residual first and second hydrogen quantities when the third electric quantity is equal to the preset electric quantity, finally comparing the hydrogen consumption under different power distribution strategies, and taking the power distribution strategy with the lowest hydrogen consumption as the optimal power distribution strategy. According to the embodiment of the invention, by performing the cycle condition pre-test and the cycle condition test on the vehicle to be evaluated, the advantages and the disadvantages of different power distribution strategies can be accurately evaluated based on the cycle condition, and the advantages and the disadvantages of the different power distribution strategies can be directly evaluated according to the hydrogen consumption amount only by recording the current electric quantity of the power battery pack and the residual hydrogen amount of the vehicle to be evaluated in the evaluation process, so that the method is simple, efficient and intuitive in result.
Drawings
FIG. 1 is a schematic flow chart diagram of a method for evaluating a power distribution strategy of a vehicle based on a cycle condition according to an embodiment of the present invention;
FIG. 2 is another schematic flow diagram of a method for evaluating a vehicle power distribution strategy based on cyclic operating conditions according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vehicle power distribution strategy evaluation device based on a cycle operating condition according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
As shown in FIG. 1, the first embodiment provides a method for evaluating a power distribution strategy of a vehicle based on a cycle condition, comprising the steps of S1-S6:
s1, performing a cycle working condition pre-test on the vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle working condition;
s2, setting an initialization state of the vehicle to be evaluated, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range, detecting the current electric quantity of the power battery pack to obtain a first electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the first residual quantity of hydrogen when the first electric quantity is equal to the preset electric quantity;
S3, performing a cycle condition test on the vehicle to be evaluated, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, stopping the cycle condition test when the second electric quantity is larger than or equal to a preset electric quantity, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range again, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of the second hydrogen when the third electric quantity is larger than or equal to the preset electric quantity;
s4, when the third electric quantity is larger than the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under the single circulation working condition according to the electric consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity;
s5, when the third electric quantity is equal to the preset electric quantity, obtaining hydrogen consumption of the vehicle to be evaluated under a single-cycle working condition according to the first hydrogen residual quantity and the second hydrogen residual quantity;
and S6, comparing the hydrogen consumption under different power distribution strategies, and taking the power distribution strategy with the lowest hydrogen consumption as the optimal power distribution strategy.
According to the embodiment, a cycle condition pre-test and a cycle condition test are carried out on a vehicle to be evaluated, the power consumption of the vehicle to be evaluated under a single cycle condition is obtained in the pre-test process, the current electric quantity of a power battery pack and the residual hydrogen quantity of the vehicle to be evaluated, namely the third electric quantity and the residual hydrogen quantities of the first and second hydrogen are recorded in the test process, so that when the third electric quantity is larger than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under the single cycle condition is obtained according to the power consumption, the third electric quantity, the preset electric quantity and the residual hydrogen quantities of the first and second hydrogen, or when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under the single cycle condition is obtained according to the residual hydrogen quantities of the first and second hydrogen, finally, the hydrogen consumption under different power distribution strategies are compared, and the power distribution strategy with the lowest hydrogen consumption is used as the optimal power distribution strategy. According to the embodiment of the invention, the cycle condition pre-test and the cycle condition test are carried out on the vehicle to be evaluated, so that the advantages and the disadvantages of different power distribution strategies can be accurately evaluated based on the cycle condition, and the advantages and the disadvantages of the different power distribution strategies can be directly evaluated according to the hydrogen consumption amount only by recording the current electric quantity of the power battery pack and the residual hydrogen amount of the vehicle to be evaluated in the evaluation process, so that the method is simple, efficient and intuitive in result.
In a preferred embodiment, the cycle condition pre-test is performed on the vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle condition, and the method specifically includes: selecting a hydrogen fuel vehicle with the load within a preset range as a vehicle to be evaluated, charging the vehicle to be evaluated to full charge and full load of hydrogen, and driving the vehicle to be evaluated to a hub rack; fixing the vehicle to be evaluated on the rotary hub rack, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance; the method comprises the following steps of performing a neutral gear sliding test on a vehicle to be evaluated to obtain sliding resistance; and performing a plurality of circulating working condition pre-tests on the vehicle to be evaluated according to the circulating working condition test standard, and averaging the total power consumption of the vehicle to be evaluated under a plurality of circulating working conditions to obtain the power consumption.
In this embodiment, the vehicle to be evaluated is a new vehicle, the load is within the preset range, the vehicle to be evaluated is charged to a full-power and full-hydrogen state, and the vehicle to be evaluated is slowly driven onto the hub rack. The method comprises the steps of mounting a vehicle to be evaluated on a rotary hub rack, fixing the vehicle to be evaluated by using a safety belt, preventing the vehicle to be evaluated from rushing out of the rotary hub rack in the test process to cause safety problems and unnecessary loss, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance. The method comprises the steps of carrying out a plurality of circulating condition pre-tests on a vehicle to be evaluated according to a circulating condition test standard, for example, running requirements of a whole vehicle test are developed according to the requirements of GB/T18386, in order to ensure test precision, three complete circulating condition pre-tests are required to be continuously developed, averaging is carried out to calculate the power Consumption Consumption0 of a single complete circulating condition, Consumption0 is the total power quantity of a power battery (SOC _ start-SOC _ finish)/3, SOC _ start represents the residual power quantity of the power battery pack at the starting moment of the circulating condition, and SOC _ finish represents the residual power quantity of the power battery pack after the three circulating conditions are completed.
In a preferred embodiment of this embodiment, the obtaining of the coasting resistance of the vehicle to be evaluated by performing a neutral coasting test on the vehicle to be evaluated specifically includes: the method comprises the steps of performing a neutral sliding test on a vehicle to be evaluated to obtain sliding time-vehicle speed data of the vehicle to be evaluated, converting the sliding time-vehicle speed data into vehicle speed-sliding resistance data, and fitting the vehicle speed-sliding resistance data into a quadratic equation function representing sliding resistance.
The embodiment obtains the sliding resistance through carrying out the neutral gear sliding test on the vehicle to be evaluated, and when the vehicle to be evaluated is fixed on the rotating hub rack, the output resistance of the rotating hub rack is adjusted to be consistent with the sliding resistance, so that the evaluation environment is close to be consistent with the real driving environment, the evaluation accuracy can be effectively improved, and the evaluation safety can be effectively improved by using the rotating hub rack.
In a preferred embodiment, the setting of the initialization state of the vehicle to be evaluated and the controlling of the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range specifically include: and controlling the vehicle to be evaluated to start a fuel-electric mode to charge the power battery pack to a preset electric quantity, standing the vehicle to be evaluated in the evaluation environment for a preset time, and adjusting the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range.
In the embodiment, the vehicle to be evaluated is controlled to start the fuel-electric mode to charge to the SOC _ init state, and the vehicle to be evaluated is placed in the evaluation environment and stands still for more than 2 hours, so that the temperature of each system of the entire vehicle is close to the evaluation environment temperature, and exemplarily, the temperature difference between each system of the entire vehicle and the evaluation environment temperature is within 2 ℃. Normally, the SOC of the power battery pack before and after the vehicle to be evaluated is left to stand is equal. The SOC _ init represents preset electric quantity, and the SOC represents current electric quantity of the power battery pack.
In a preferred embodiment, the detecting a current electric quantity of the power battery pack to obtain a first electric quantity, and when the first electric quantity is equal to a preset electric quantity, recording the remaining quantity of hydrogen of the vehicle to be evaluated as the first remaining quantity of hydrogen, further includes: when the first electric quantity is not equal to the preset electric quantity, charging the power battery pack through a fuel-electric mode or consuming power through a load in the vehicle until the first electric quantity is adjusted to be equal to the preset electric quantity; and controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range, and recording the residual amount of the hydrogen of the vehicle to be evaluated as the first residual amount of the hydrogen when the first electric quantity is equal to the preset electric quantity at the moment of high voltage of the vehicle to be evaluated.
In this embodiment, the high voltage on the vehicle to be evaluated is detected, the current electric quantity of the power battery pack is detected to obtain the first electric quantity, and the following conditions exist:
when the SOC is not equal to the SOC _ init, the whole vehicle can charge a power battery pack through a fuel mode or through an in-vehicle load power consumption mode such as an air conditioner, so that the SOC is equal to the SOC _ init, then the vehicle to be evaluated is placed in an evaluation environment again for a preset time, and the SOC is equal to the SOC _ init at the moment of high voltage, and the hydrogen residual quantity of the whole vehicle is recorded as a first hydrogen residual quantity H2sp _ 0;
and when the SOC is equal to the SOC _ init, directly recording the hydrogen residual quantity of the whole vehicle at the moment as a first hydrogen residual quantity H2sp _ 0. Wherein, SOC _ init represents the preset electric quantity, and SOC represents the current electric quantity of the power battery pack.
In an embodiment of the present invention, the vehicle to be evaluated is subjected to a cycle condition test, and the current electric quantity of the power battery pack is detected to obtain the second electric quantity, when the second electric quantity is greater than or equal to a preset electric quantity, the cycle condition test is stopped, the temperature difference between the temperature of each system of the vehicle to be evaluated and the evaluation environment temperature is controlled again within a preset temperature range, and the current electric quantity of the power battery pack is detected to obtain the third electric quantity, and when the third electric quantity is greater than or equal to the preset electric quantity, the remaining quantity of hydrogen of the vehicle to be evaluated is recorded as the remaining quantity of hydrogen, specifically: the method comprises the steps that a vehicle to be evaluated is subjected to a plurality of times of cyclic working condition tests according to cyclic working condition test standards, the current electric quantity of a power battery pack is detected to obtain a second electric quantity, when the second electric quantity is smaller than a preset electric quantity, the vehicle to be evaluated is controlled to be parked in place and the power battery pack is charged in a fuel-electric mode until the second electric quantity is adjusted to be equal to the preset electric quantity, and when the second electric quantity is larger than or equal to the preset electric quantity, the cyclic working condition tests are stopped;
And when the third electric quantity is less than the preset electric quantity, the vehicle to be evaluated is controlled to stop in situ and charge the power battery pack in a fuel-electric mode until the third electric quantity is adjusted to be equal to the preset electric quantity, and when the third electric quantity is more than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as the residual quantity of the second hydrogen.
It should be noted that before the test, the CAN acquisition device CAN be connected to the OBD port of the whole vehicle, and CAN message data of the whole vehicle CAN be recorded in the whole process for data backup.
In this embodiment, a vehicle to be evaluated is subjected to a plurality of cyclic working condition tests according to a cyclic working condition test standard, for example, a driving requirement of a complete vehicle test is developed according to the requirement of GB/T18386, three complete cyclic working condition tests are required to be developed to ensure test accuracy, and a current electric quantity of a power battery pack is detected to obtain a second electric quantity, where the following conditions exist:
when the SOC is more than or equal to the SOC _ init, the whole vehicle directly stops testing;
and when the SOC is less than the SOC _ init, the whole vehicle can be parked in the original place, then the fuel-electric mode is started for charging until the SOC is equal to the SOC _ init, and then the test is stopped.
After the test is stopped, the vehicle to be evaluated is placed in the evaluation environment again and stands for more than 2 hours, so that the temperature of each system of the whole vehicle is close to the temperature of the evaluation environment, illustratively, the temperature difference between the temperature of each system of the whole vehicle and the temperature of the evaluation environment is within 2 ℃, the current electric quantity of the power battery pack is detected, and a third electric quantity is obtained, wherein the following conditions exist:
when the SOC is less than the SOC _ init, the whole vehicle can be parked in place, then a fuel-electric mode is started for charging, the SOC is equal to the SOC _ init, and the hydrogen residual quantity of the vehicle to be evaluated at the moment is recorded as a second hydrogen residual quantity H2sp _ 1;
when the SOC is equal to the SOC _ init, directly recording the hydrogen residual quantity of the vehicle to be evaluated at the moment as a second hydrogen residual quantity H2sp _ 1;
and when the SOC is larger than the SOC _ init, directly recording the hydrogen residual quantity of the vehicle to be evaluated as a second hydrogen residual quantity H2sp _ 1. The SOC _ init represents preset electric quantity, and the SOC represents current electric quantity of the power battery pack.
In a preferred embodiment, when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen remaining quantity, and the second hydrogen remaining quantity, and specifically: when the third electric quantity is larger than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption amount-first hydrogen consumption amount)/[ (third power amount-preset power amount)/power consumption amount + number of cycles test).
In the present embodiment, when SOC > SOC _ init, it is described that after the vehicle completes the three-cycle Condition test, the power battery pack is not consumed but charged, and hydrogen is consumed more, so that the amount of power generated is required to be converted to the cycle Condition, where Ele2 (Condition) is converted to (SOC-SOC _ init)/Condition 0, and the hydrogen Consumption of the vehicle to be evaluated under a single-cycle Condition is (H2sp — 1-H2sp — 0)/(Ele2 + 2Condition + 3).
In a preferred embodiment, when the third electric quantity is equal to a preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the first hydrogen remaining quantity and the second hydrogen remaining quantity, and specifically: when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption-first hydrogen consumption)/number of cycles.
In the present embodiment, when the SOC is SOC _ init, the hydrogen consumption of the vehicle to be evaluated under a single-cycle condition is (H2sp _1-H2sp _ 0)/3.
For example, a specific flow of the vehicle power distribution strategy evaluation method based on the cycling condition according to the embodiment is shown in fig. 2.
As shown in FIG. 3, a second embodiment provides a vehicle power distribution strategy evaluation device based on cyclic conditions, comprising: the power consumption obtaining module 21 is configured to perform a cycle condition pre-test on the vehicle to be evaluated to obtain power consumption of the vehicle to be evaluated under a single cycle condition; the first recording module 22 is configured to set an initialization state of the vehicle to be evaluated, control a temperature difference between each system temperature of the vehicle to be evaluated and an evaluation environment temperature to be within a preset temperature range, detect a current electric quantity of the power battery pack to obtain a first electric quantity, and record a hydrogen remaining quantity of the vehicle to be evaluated as a first hydrogen remaining quantity when the first electric quantity is equal to the preset electric quantity; the second recording module 23 is configured to perform a cycle condition test on the vehicle to be evaluated, detect a current electric quantity of the power battery pack to obtain a second electric quantity, stop the cycle condition test when the second electric quantity is greater than or equal to a preset electric quantity, control a temperature difference between each system temperature of the vehicle to be evaluated and an evaluation environment temperature within a preset temperature range again, detect the current electric quantity of the power battery pack to obtain a third electric quantity, and record the remaining hydrogen quantity of the vehicle to be evaluated as a second remaining hydrogen quantity when the third electric quantity is greater than or equal to the preset electric quantity; the calculation module 24 is configured to obtain, when the third electric quantity is greater than a preset electric quantity, a hydrogen consumption amount of the vehicle to be evaluated under a single cycle working condition according to the power consumption amount, the third electric quantity, the preset electric quantity, the first hydrogen remaining amount, and the second hydrogen remaining amount; the calculation module 24 is further configured to, when the third electric quantity is equal to the preset electric quantity, obtain a hydrogen consumption amount of the vehicle to be evaluated under a single cycle working condition according to the first hydrogen remaining amount and the second hydrogen remaining amount; and the evaluation module 25 is configured to compare hydrogen consumption amounts under different power distribution strategies, and use the power distribution strategy with the lowest hydrogen consumption amount as the optimal power distribution strategy.
According to the embodiment, a cycle condition pre-test and a cycle condition test are carried out on a vehicle to be evaluated, the power consumption of the vehicle to be evaluated under a single cycle condition is obtained in the pre-test process, the current electric quantity of a power battery pack and the residual hydrogen quantity of the vehicle to be evaluated, namely the third electric quantity and the residual first and second hydrogen quantities are recorded in the test process, when the third electric quantity is larger than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under the single cycle condition is obtained according to the power consumption, the third electric quantity, the preset electric quantity and the residual first and second hydrogen quantities, or when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated is obtained according to the residual first and second hydrogen quantities, finally, the hydrogen consumption under different power distribution strategies is compared, and the power distribution strategy with the lowest hydrogen consumption is used as the optimal power distribution strategy. According to the embodiment of the invention, by performing the cycle condition pre-test and the cycle condition test on the vehicle to be evaluated, the advantages and the disadvantages of different power distribution strategies can be accurately evaluated based on the cycle condition, and the advantages and the disadvantages of the different power distribution strategies can be directly evaluated according to the hydrogen consumption amount only by recording the current electric quantity of the power battery pack and the residual hydrogen amount of the vehicle to be evaluated in the evaluation process, so that the method is simple, efficient and intuitive in result.
In a preferred embodiment, the cycle condition pre-test is performed on the vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle condition, and the method specifically includes: selecting a hydrogen fuel vehicle with the load within a preset range as a vehicle to be evaluated, charging the vehicle to be evaluated to full charge and full load of hydrogen, and driving the vehicle to be evaluated to a hub rack; fixing the vehicle to be evaluated on the rotary hub rack, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance; the method comprises the following steps of performing a neutral gear sliding test on a vehicle to be evaluated to obtain sliding resistance; and performing a plurality of circulating working condition pre-tests on the vehicle to be evaluated according to the circulating working condition test standard, and averaging the total power consumption of the vehicle to be evaluated under a plurality of circulating working conditions to obtain the power consumption.
In this embodiment, the vehicle to be evaluated is a new vehicle, the load is within the preset range, the vehicle to be evaluated is charged to a full-electricity and full-hydrogen state, and the vehicle to be evaluated is slowly driven onto the hub rack. The method comprises the steps of mounting a vehicle to be evaluated on a rotary hub rack, fixing the vehicle to be evaluated by using a safety belt, preventing the vehicle to be evaluated from rushing out of the rotary hub rack in the test process to cause safety problems and unnecessary loss, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance. The method comprises the steps of carrying out a plurality of circulating condition pre-tests on a vehicle to be evaluated according to a circulating condition test standard, for example, running requirements of a finished vehicle test are developed according to GB/T18386, three complete circulating condition pre-tests are required to be continuously developed in order to ensure test precision, the power Consumption Consumption0 of a single complete circulating condition is calculated by taking an average value, the Consumption0 is the total electric quantity of a power battery (SOC _ start-SOC _ finish)/3, SOC _ start represents the residual electric quantity of a power battery pack at the starting moment of the circulating condition, and SOC _ finish represents the residual electric quantity of the power battery pack after the three circulating conditions are finished.
In a preferred embodiment of this embodiment, the obtaining of the coasting resistance of the vehicle to be evaluated by performing a neutral coasting test on the vehicle to be evaluated specifically includes: the method comprises the steps of performing a neutral sliding test on a vehicle to be evaluated to obtain sliding time-vehicle speed data of the vehicle to be evaluated, converting the sliding time-vehicle speed data into vehicle speed-sliding resistance data, and fitting the vehicle speed-sliding resistance data into a quadratic equation function representing sliding resistance.
The embodiment obtains the sliding resistance through carrying out the neutral gear sliding test on the vehicle to be evaluated, and when the vehicle to be evaluated is fixed on the rotating hub rack, the output resistance of the rotating hub rack is adjusted to be consistent with the sliding resistance, so that the evaluation environment is close to be consistent with the real driving environment, the evaluation accuracy can be effectively improved, and the evaluation safety can be effectively improved by using the rotating hub rack.
In a preferred embodiment, the setting of the initialization state of the vehicle to be evaluated and the controlling of the temperature difference between each system temperature of the vehicle to be evaluated and the evaluation environment temperature within a preset temperature range specifically include: and controlling the vehicle to be evaluated to start a fuel-electric mode to charge the power battery pack to a preset electric quantity, standing the vehicle to be evaluated in the evaluation environment for a preset time, and adjusting the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within a preset temperature range.
In the embodiment, the vehicle to be evaluated is controlled to start the fuel-electric mode to charge to the SOC _ init state, and the vehicle to be evaluated is placed in the evaluation environment and stands still for more than 2 hours, so that the temperature of each system of the whole vehicle is close to the evaluation environment temperature, and illustratively, the temperature difference between each system of the whole vehicle and the evaluation environment temperature is within 2 ℃. Normally, the SOC of the power battery pack before and after the vehicle to be evaluated is stationary is equal. Wherein, SOC _ init represents the preset electric quantity, and SOC represents the current electric quantity of the power battery pack.
In a preferred embodiment, the detecting a current electric quantity of the power battery pack to obtain a first electric quantity, and when the first electric quantity is equal to a preset electric quantity, recording a remaining amount of hydrogen of the vehicle to be evaluated as a first remaining amount of hydrogen, further includes: when the first electric quantity is not equal to the preset electric quantity, charging the power battery pack through a fuel-electric mode or consuming power through a load in the vehicle until the first electric quantity is adjusted to be equal to the preset electric quantity; and the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment is controlled within a preset temperature range again, and when the first electric quantity is equal to the preset electric quantity at the moment of high voltage of the vehicle to be evaluated, the residual quantity of the hydrogen of the vehicle to be evaluated is recorded as the first residual quantity of the hydrogen.
In this embodiment, the high voltage on the vehicle to be evaluated is detected, the current electric quantity of the power battery pack is detected to obtain the first electric quantity, and the following conditions exist:
firstly, when SOC is not equal to SOC _ init, the whole vehicle can charge a power battery pack through a fuel mode or through a load power consumption mode in the vehicle such as an air conditioner and the like, so that SOC is equal to SOC _ init, then the vehicle to be evaluated is placed in an evaluation environment again for a preset time until the SOC is equal to SOC _ init at the moment of high voltage, and the hydrogen residual quantity of the whole vehicle at the moment is recorded as a first hydrogen residual quantity H2sp _ 0;
and when the SOC is equal to the SOC _ init, directly recording the hydrogen residual quantity of the whole vehicle at the moment as a first hydrogen residual quantity H2sp _ 0. The SOC _ init represents preset electric quantity, and the SOC represents current electric quantity of the power battery pack.
In a preferred embodiment, the vehicle to be evaluated is subjected to a cycle condition test, the current electric quantity of the power battery pack is detected to obtain a second electric quantity, when the second electric quantity is greater than or equal to a preset electric quantity, the cycle condition test is stopped, the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment is controlled within a preset temperature range again, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, and when the third electric quantity is greater than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as the residual quantity of hydrogen, and the cycle condition test specifically comprises the following steps: the method comprises the steps that a cycle condition test is carried out on a vehicle to be evaluated for multiple times according to a cycle condition test standard, the current electric quantity of a power battery pack is detected to obtain a second electric quantity, when the second electric quantity is smaller than a preset electric quantity, the vehicle to be evaluated is controlled to stop in situ and charge the power battery pack through a fuel-electricity mode until the second electric quantity is adjusted to be equal to the preset electric quantity, and when the second electric quantity is larger than or equal to the preset electric quantity, the cycle condition test is stopped; the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment is controlled within a preset temperature range again, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, when the third electric quantity is smaller than the preset electric quantity, the vehicle to be evaluated is controlled to stop in place and charge the power battery pack through a fuel-electric mode until the third electric quantity is adjusted to be equal to the preset electric quantity, and when the third electric quantity is larger than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as the residual quantity of hydrogen.
It should be noted that before the test, the CAN acquisition device CAN be connected to the OBD port of the whole vehicle, and CAN message data of the whole vehicle CAN be recorded in the whole process for data backup.
In this embodiment, a vehicle to be evaluated is subjected to a plurality of cyclic working condition tests according to a cyclic working condition test standard, for example, a driving requirement of a complete vehicle test is developed according to the requirement of GB/T18386, three complete cyclic working condition tests are required to be developed to ensure test accuracy, and a current electric quantity of a power battery pack is detected to obtain a second electric quantity, where the following conditions exist:
when the SOC is more than or equal to the SOC _ init, the whole vehicle directly stops testing;
and when the SOC is less than the SOC _ init, the whole vehicle can be parked in place, then the fuel-electric mode is started for charging until the SOC is equal to the SOC _ init, and then the test is stopped.
After the test is stopped, placing the vehicle to be evaluated in the evaluation environment again and standing for more than 2h to enable the temperature of each system of the whole vehicle to be close to the evaluation environment temperature, exemplarily, the temperature difference between each system of the whole vehicle and the evaluation environment temperature is within 2 ℃, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, wherein the following conditions exist:
when the SOC is less than the SOC _ init, the whole vehicle can be parked in place, then a fuel-electric mode is started for charging, the SOC is equal to the SOC _ init, and the hydrogen residual quantity of the vehicle to be evaluated at the moment is recorded as a second hydrogen residual quantity H2sp _ 1;
When the SOC is equal to the SOC _ init, directly recording the hydrogen residual quantity of the vehicle to be evaluated at the moment as a second hydrogen residual quantity H2sp _ 1;
and when the SOC is larger than the SOC _ init, directly recording the hydrogen residual quantity of the vehicle to be evaluated at the moment as a second hydrogen residual quantity H2sp _ 1. Wherein, SOC _ init represents the preset electric quantity, and SOC represents the current electric quantity of the power battery pack.
In a preferred embodiment, when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the electric power consumption, the third electric quantity, the preset electric quantity, the first hydrogen remaining quantity and the second hydrogen remaining quantity, and specifically: when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition is as follows: (second hydrogen consumption amount-first hydrogen consumption amount)/[ (third power-preset power)/power consumption + number of cycles test ].
In this embodiment, when SOC > SOC _ init, it is described that after the vehicle completes the three-cycle Condition test, the power battery pack is not consumed but charged, and the hydrogen Consumption is large, so that the amount of electricity generated is required to be converted to the cycle Condition, where Ele2Condition is converted to (SOC-SOC _ init)/Condition 0, and the hydrogen Consumption of the vehicle to be evaluated under a single-cycle Condition is converted to (H2sp _1-H2sp _0)/(Ele2Condition + 3).
In a preferred embodiment, when the third electric quantity is equal to a preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the first hydrogen remaining quantity and the second hydrogen remaining quantity, and specifically:
when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption-first hydrogen consumption)/number of cycles test.
In the present embodiment, when the SOC is SOC _ init, the hydrogen consumption of the vehicle to be evaluated under a single-cycle condition is (H2sp _1-H2sp _ 0)/3.
In summary, the embodiment of the present invention has the following advantages:
the method comprises the steps of carrying out a cycle condition pre-test and a cycle condition test on a vehicle to be evaluated, obtaining the power consumption of the vehicle to be evaluated under a single cycle condition in the pre-test process, recording the current electric quantity of a power battery pack and the residual hydrogen quantity of the vehicle to be evaluated, namely the third electric quantity and the residual hydrogen quantities of the first and second hydrogen gases, when the third electric quantity is larger than the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under the single cycle condition according to the power consumption, the third electric quantity, the preset electric quantity and the residual hydrogen quantities of the first and second hydrogen gases, or when the third electric quantity is equal to the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated according to the residual hydrogen quantities of the first and second hydrogen gases, finally comparing the hydrogen consumption under different power distribution strategies, and taking the power distribution strategy with the lowest hydrogen consumption as the optimal power distribution strategy. According to the embodiment of the invention, the cycle condition pre-test and the cycle condition test are carried out on the vehicle to be evaluated, so that the advantages and the disadvantages of different power distribution strategies can be accurately evaluated based on the cycle condition, and the advantages and the disadvantages of the different power distribution strategies can be directly evaluated according to the hydrogen consumption amount only by recording the current electric quantity of the power battery pack and the residual hydrogen amount of the vehicle to be evaluated in the evaluation process, so that the method is simple, efficient and intuitive in result.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (10)
1. A vehicle power distribution strategy evaluation method based on cycle conditions is characterized by comprising the following steps:
performing a cycle working condition pre-test on a vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle working condition;
setting an initialization state of the vehicle to be evaluated, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of an evaluation environment within a preset temperature range, detecting the current electric quantity of a power battery pack to obtain a first electric quantity for the vehicle to be evaluated, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of the first hydrogen when the first electric quantity is equal to the preset electric quantity;
performing a cycle condition test on the vehicle to be evaluated, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, stopping the cycle condition test when the second electric quantity is larger than or equal to the preset electric quantity, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within the preset temperature range again, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as a second residual quantity of hydrogen when the third electric quantity is larger than or equal to the preset electric quantity;
When the third electric quantity is larger than the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity;
when the third electric quantity is equal to the preset electric quantity, obtaining the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition according to the first hydrogen residual quantity and the second hydrogen residual quantity;
and comparing the hydrogen consumption under different power distribution strategies, and taking the power distribution strategy with the lowest hydrogen consumption as an optimal power distribution strategy.
2. The vehicle power distribution strategy evaluation method based on the cycle condition according to claim 1, wherein the vehicle to be evaluated is subjected to a cycle condition pre-test to obtain the power consumption of the vehicle to be evaluated under a single cycle condition, and specifically:
selecting a hydrogen fuel vehicle with the load within a preset range as the vehicle to be evaluated, charging the vehicle to be evaluated to full power and full load of hydrogen, and driving the vehicle to be evaluated to a hub rack;
fixing the vehicle to be evaluated on the rotary hub rack, inputting the sliding resistance of the vehicle to be evaluated into the rotary hub rack, and adjusting the output resistance of the rotary hub rack to be consistent with the sliding resistance;
And performing multiple cycle working condition pre-tests on the vehicle to be evaluated according to the cycle working condition test standard, and averaging the total power consumption of the vehicle to be evaluated under multiple cycle working conditions to obtain the power consumption.
3. The method for evaluating the vehicle power distribution strategy based on the cycle condition according to claim 1, wherein the initialization state of the vehicle to be evaluated is set, and the temperature difference between each system temperature of the vehicle to be evaluated and the evaluation environment temperature is controlled within a preset temperature range, specifically:
and controlling the to-be-evaluated vehicle to start an electric combustion mode to charge the power battery pack to the preset electric quantity, standing the to-be-evaluated vehicle in the evaluation environment for a preset time, and adjusting the temperature difference between each system temperature of the to-be-evaluated vehicle and the temperature of the evaluation environment within the preset temperature range.
4. The method for evaluating the power distribution strategy of the vehicle based on the cyclic working condition according to claim 1, wherein for the high voltage of the vehicle to be evaluated, the current electric quantity of the power battery pack is detected to obtain a first electric quantity, and when the first electric quantity is equal to a preset electric quantity, the residual hydrogen quantity of the vehicle to be evaluated is recorded as a first residual hydrogen quantity, and further comprising:
When the first electric quantity is not equal to the preset electric quantity, the power battery pack is charged in a fuel mode or consumes power through a load in the vehicle until the first electric quantity is adjusted to be equal to the preset electric quantity;
and the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment is controlled to be within the preset temperature range again, and when the first electric quantity is equal to the preset electric quantity at the moment of high voltage of the vehicle to be evaluated, the residual quantity of the hydrogen of the vehicle to be evaluated is recorded as the first residual quantity of the hydrogen.
5. The method for evaluating the power distribution strategy of the vehicle based on the cyclic working condition according to claim 1, wherein the cyclic working condition test is performed on the vehicle to be evaluated, the current electric quantity of the power battery pack is detected to obtain a second electric quantity, when the second electric quantity is greater than or equal to the preset electric quantity, the cyclic working condition test is stopped, the temperature difference between the temperature of each system of the vehicle to be evaluated and the evaluation environment temperature is controlled again within the preset temperature range, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, and when the third electric quantity is greater than or equal to the preset electric quantity, the remaining hydrogen quantity of the vehicle to be evaluated is recorded as the remaining hydrogen quantity, specifically:
Performing a plurality of times of cycle condition tests on the vehicle to be evaluated according to a cycle condition test standard, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, controlling the vehicle to be evaluated to be parked in situ and charging the power battery pack through a fuel-electric mode when the second electric quantity is smaller than the preset electric quantity until the second electric quantity is adjusted to be equal to the preset electric quantity, and stopping the cycle condition test when the second electric quantity is larger than or equal to the preset electric quantity;
and the temperature difference between the system temperature of the vehicle to be evaluated and the evaluation environment temperature is controlled to be within the preset temperature range, the current electric quantity of the power battery pack is detected to obtain a third electric quantity, when the third electric quantity is smaller than the preset electric quantity, the vehicle to be evaluated is controlled to stop in place and charge the power battery pack through a fuel-electric mode until the third electric quantity is adjusted to be equal to the preset electric quantity, and when the third electric quantity is larger than or equal to the preset electric quantity, the residual quantity of hydrogen of the vehicle to be evaluated is recorded as the residual quantity of the second hydrogen.
6. The method for evaluating the vehicle power distribution strategy based on the cyclic working conditions according to claim 1, wherein when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cyclic working condition is obtained according to the power consumption, the third electric quantity, the preset electric quantity, the first residual hydrogen quantity and the second residual hydrogen quantity, and specifically is as follows:
When the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption amount-first hydrogen consumption amount)/[ (the third electric quantity-the preset electric quantity)/the electric power consumption amount + number of cycle condition tests ].
7. The method for evaluating the vehicle power distribution strategy based on the cycle condition according to claim 1, wherein when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the first residual hydrogen quantity and the second residual hydrogen quantity, specifically:
when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption-first hydrogen consumption)/number of cycles.
8. A vehicle power distribution strategy evaluation device based on cycle conditions is characterized by comprising the following steps:
the power consumption acquisition module is used for performing a cycle working condition pre-test on the vehicle to be evaluated to obtain the power consumption of the vehicle to be evaluated under a single cycle working condition;
the first recording module is used for setting an initialization state of the vehicle to be evaluated, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of an evaluation environment within a preset temperature range, detecting the current electric quantity of a power battery pack to obtain a first electric quantity for the vehicle to be evaluated, and recording the residual quantity of hydrogen of the vehicle to be evaluated as a first residual quantity of hydrogen when the first electric quantity is equal to the preset electric quantity;
The second recording module is used for performing a cycle condition test on the vehicle to be evaluated, detecting the current electric quantity of the power battery pack to obtain a second electric quantity, stopping the cycle condition test when the second electric quantity is larger than or equal to the preset electric quantity, controlling the temperature difference between the temperature of each system of the vehicle to be evaluated and the temperature of the evaluation environment within the preset temperature range again, detecting the current electric quantity of the power battery pack to obtain a third electric quantity, and recording the residual quantity of hydrogen of the vehicle to be evaluated as the residual quantity of second hydrogen when the third electric quantity is larger than or equal to the preset electric quantity;
the calculation module is used for obtaining the hydrogen consumption of the vehicle to be evaluated under a single circulation working condition according to the power consumption, the third electric quantity, the preset electric quantity, the first hydrogen residual quantity and the second hydrogen residual quantity when the third electric quantity is larger than the preset electric quantity;
the calculation module is further configured to obtain the hydrogen consumption of the vehicle to be evaluated under a single cycle condition according to the first hydrogen residual amount and the second hydrogen residual amount when the third electric quantity is equal to the preset electric quantity;
And the evaluation module is used for comparing the hydrogen consumption under different power distribution strategies and taking the power distribution strategy with the lowest hydrogen consumption as the optimal power distribution strategy.
9. The evaluation device of the vehicle power distribution strategy based on the cyclic working condition according to claim 8, wherein when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cyclic working condition is obtained according to the electric power consumption, the third electric quantity, the preset electric quantity, the first remaining hydrogen quantity, and the second remaining hydrogen quantity, and specifically:
when the third electric quantity is greater than the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption amount-first hydrogen consumption amount)/[ (the third electric quantity-the preset electric quantity)/the electric power consumption amount + number of cycle condition tests ].
10. The evaluation device of the vehicle power distribution strategy based on the cycle condition according to claim 8, wherein when the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle condition is obtained according to the first residual hydrogen quantity and the second residual hydrogen quantity, specifically:
When the third electric quantity is equal to the preset electric quantity, the hydrogen consumption of the vehicle to be evaluated under a single cycle working condition is as follows: (second hydrogen consumption-first hydrogen consumption)/number of cycles.
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