Power distribution method and system for double-range-extending system

Abstract

The power distribution system comprises an upper-layer total power distribution control system EMS, the double-range-extending system and a high-voltage power lithium ion battery, and the double-range-extending system comprises a first range-extending system and a second range-extending system. Two independent range extending control systems are arranged, so that the weight of a whole machine system is reduced, the total efficiency under different power distribution combinations is obtained by obtaining the corresponding relation of the power, the rotating speed, the torque and the efficiency of each range extending system and carrying out gridding processing on the maximum power and the efficiency, and the overall efficiency is improved. The optimal power distribution combination corresponding to the highest efficiency under different power requests is determined to carry out power distribution, the system efficiency can be effectively improved by adopting dynamic power distribution, the operation complexity of a controller is effectively simplified and reduced through the control logic of internal linear table lookup, the operation efficiency and robustness of the system are improved, and the system reliability is improved. Through dynamic real-time performance based on power distribution, system reliability and NVH characteristics can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy mining trucks and commercial vehicle range-extending systems, and in particular to a power distribution method and system for a dual-range-extending system. Background Art

[0002] The existing dual-range extended-range hybrid system is particularly used in large mining vehicles. When in use, one set of backup and one set of main hybrid range-extender systems are usually used. In the normal working mode, only one set of the range-extender system works, and the other is used as a backup. When one set fails, the other set of the range-extender system is started to achieve seamless operation; or two sets of small and medium-power range-extender systems are used, in which the power of the two systems is evenly distributed, so that the two range-extender systems can work at the same time and the power is evenly distributed; however, when the prior art uses one set of backup and one set of main hybrid range-extender systems, since two sets of range-extender systems are matched and each set of range-extender systems can meet the power requirements of the whole machine, the weight of the whole system is large, and when there is a power demand for the small-power range-extender system, both systems need to work, especially at low power, both systems need to run, which increases the system thermal management load, reduces the system efficiency, and increases the system working time, affecting the system reliability. Summary of the invention

[0004] The purpose of the present invention is to provide a power distribution method and system for a dual-range extended-range system, which has the advantages of improving system operating efficiency, system reliability and NVH characteristics, and solves the problem that when a hybrid range-extender system with one set of backup and one set of main use is used in the prior art, the weight of the entire system is large due to matching two sets of range-extender systems, and each set of range-extender systems can meet the power requirements of the entire machine, and when a low-power range-extender system has power requirements, both systems need to work, especially under low power, both systems need to run, which increases the system thermal management load, reduces the system efficiency, and increases the system working time, affecting the system reliability.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dual-range extender system power distribution system, comprising an upper-level total power distribution control system EMS, a dual-range extender system and a high-voltage power lithium-ion battery, the dual-range extender system comprising a first range extender system and a second range extender system, the first range extender system comprising a range extender control system HCU01, an engine controller ECU01, an engine 01, a generator 01 and a generator controller MCU01, the second range extender system comprising a range extender control system HCU02, an engine controller ECU02, an engine 02, a generator 02 and a generator controller MCU02.

[0006] A method for distributing power of a dual-range extended-range system, wherein the steps of the distribution method are as follows:

[0007] A. First, bench tests are performed on the first range-extending system and the second range-extending system to obtain the maximum power of the system at different speeds and the system efficiency at different powers;

[0008] A1. Test the maximum power generation of the first range-extending system, obtain the maximum power generation characteristic curve at different speeds, and obtain the maximum power generation P01Max of the first range-extending system;

[0009] A2. According to step A1, the system power generation efficiency is tested again to obtain the system power generation efficiency curves at different speeds, and the system power generation efficiency at different engine speeds and different torques is tested respectively to obtain the power generation efficiency at different speeds and different torques;

[0010] A3. After obtaining the two-dimensional matrix table of power generation efficiency of the first range extender system in step A2, integrate it into the optimal power generation efficiency under different power generation, that is, the optimal power generation efficiency table of the system under different power generation, the corresponding optimal engine speed curve under different power generation,

[0011] A4. Repeat steps A1, A2 and A3 to test the second range extender system, so as to obtain the maximum power generation power P02Max of the second range extender system, the efficiency table under different power generation speeds and torques, the system efficiency table under different power generation powers, and the optimal power generation speed table under different power generation powers;

[0012] B. Based on the test results in step A, calculate the maximum power generation of the dual-range extended-range system Pmax=P01Max+P02Max;

[0013] C. When the total power required by the system is Preq, it is necessary to compare this power Preq with the maximum power generation power Pmax of the dual-range extended system in step B, and take the smaller one to obtain PreqArb=min(Preq,Pmax);

[0014] D. Select power allocation coefficients K1 and K2, where PreqArb = K1*P01+K2*P02; through gradual iteration, under a certain fixed required power Preq, set K1 = 0, 0.1 and gradually increase to 1, and obtain different power allocation coefficients K1 and K2 under this power request, and obtain the system power consumption Pall under different allocation coefficients according to the formula, and select the minimum power consumption Pallmin, as well as the corresponding K1opc and K2opc, where P01 and P02 are the optimal power generation values ​​of the extended-range system 01 and the extended-range system 02 respectively;

[0015] E. Obtain the optimal K1opc and K2opc values ​​under different power requests Preq according to step D, and obtain the first extended-range system power allocation value P01req and the second extended-range system power value P02req under different power requests Preq;

[0016] P01req=K1opc*P01;

[0017] P02req=K2opc*P02;

[0018] F. Based on the P01req value, linear interpolation is performed according to the engine speed at the optimal power generation to find the target engine speed Ndes01 at this power. Similarly, based on the P02req value, linear power interpolation is performed according to the engine speed at the optimal power generation to find the target engine speed Ndes02 at this power.

[0019] G. The upper-level total power distribution control system EMS sends the first range-extending system power demand P01req and the target speed Ndes01 to the range-extending control system HCU01 through CAN1, and the upper-level total power distribution control system EMS sends the second range-extending system power demand P02req and the target speed Ndes02 to the range-extending control system HCU02 through CAN2;

[0020] H. The range-extending control system HCU01 sends the target speed to the generator controller MCU01 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes01. The range-extending control system HCU02 sends the target speed to the generator controller MCU02 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes02;

[0021] I. The range-extended control system HCU01 sends the target torque value to the engine controller ECU01 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque. The range-extended control system HCU02 sends the target torque value to the engine controller ECU02 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque.

[0022] Preferably, the upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU01 through CAN1, and the extended-range control system HCU01 interacts with the engine controller ECU01 and the generator controller MCU01 respectively through the internal CAN, the engine 01 is directly connected to the generator 01, the generator 01 outputs a three-phase line (U, V, W) connected to the generator controller MCU01, and the generator controller MCU01 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

[0023] Preferably, the upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU02 through CAN2, and the extended-range control system HCU02 interacts with the engine controller ECU02 and the generator controller MCU02 respectively through the internal CAN, the engine 02 is directly connected to the generator 02, the generator 02 outputs a three-phase line (U, V, W) connected to the generator controller MCU02, and the generator controller MCU02 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

[0024] Preferably, the formula used in step D is Pall=K1*P01 / P01Eff+K2*P02 / P02Eff, and Pall is the total energy under the current power generation working condition, including efficiency loss.

[0025] Preferably, in step G, the target torque sent by the range extender control system HCU01 is Tqdes01=P01req*9550 / Ndes01, and the target torque sent by the range extender control system HCU02 is Tqdes02=P02req*9550 / Ndes02.

[0026] Preferably, in the step E, the first range-extended system power allocation value is: P01req=K1*P01, and the second range-extended system power value P01req=K2*P02.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention reduces the weight of the entire system by setting up two independent extended-range control systems, and can effectively improve the system efficiency by adopting dynamic power distribution. The internal linear table lookup control logic can effectively simplify and reduce the operating complexity of the controller, thereby improving the system operating efficiency and robustness. The dynamic real-time performance based on power distribution can effectively improve the system reliability and NVH characteristics.

[0029] The present invention obtains the corresponding relationship between the power, speed, torque and efficiency of each range-extending system, determines the maximum efficiency of each range-extending system under different power requests according to the corresponding relationship, and performs grid processing on the maximum power and efficiency of the dual-range-extending system to obtain the total efficiency of the dual-range-extending system under different power distribution combinations, determines the optimal power distribution combination corresponding to the highest efficiency of the dual-range-extending system under different power requests, and thus performs power distribution of the dual-range-extending system in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the system principle of the present invention;

[0031] Figure 2 It is a schematic diagram of the process of the present invention.

[0032] Figure 3 It is a schematic diagram of the maximum power generation of the range extender system 1 at different engine speeds; Figure 4 It is a schematic diagram of the maximum power generation of the range extender system 2 at different engine speeds. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] The present invention provides a technical solution, a dual-range extender system power distribution system, including an upper-level total power distribution control system EMS, a dual-range extender system and a high-voltage power lithium-ion battery, the dual-range extender system including a first range extender system and a second range extender system, the first range extender system including a range extender control system HCU01, an engine controller ECU01, an engine 01, a generator 01 and a generator controller MCU01, the second range extender system including a range extender control system HCU02, an engine controller ECU02, an engine 02, a generator 02 and a generator controller MCU02.

[0036] The upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU01 through CAN1, and the extended-range control system HCU01 interacts with the engine controller ECU01 and the generator controller MCU01 through the internal CAN respectively. The engine 01 is directly connected to the generator 01, and the three-phase line (U, V, W) output by the generator 01 is connected to the generator controller MCU01, and the generator controller MCU01 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

[0037] The upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU02 through CAN2, and the extended-range control system HCU02 interacts with the engine controller ECU02 and the generator controller MCU02 through the internal CAN respectively. The engine 02 is directly connected to the generator 02, and the generator 02 outputs a three-phase line (U, V, W) connected to the generator controller MCU02, and the generator controller MCU02 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

[0038] Example 2

[0039] A distribution method of a dual-range extended system power distribution system, the distribution method steps are as follows:

[0040] A. First, bench tests are performed on the first range-extending system and the second range-extending system to obtain the maximum power of the system at different speeds and the system efficiency at different powers;

[0041] A1. Taking the bench test of the first range-extending system as an example, the maximum power generation of the range-extending system was tested with a step length of 50 rpm and a minimum of 800 rpm. The maximum power generation characteristic curves at different speeds were obtained as follows: Figure 3 As shown, the maximum power generation power P01Max of the first range-extending system is obtained.

[0042] A2. According to step A1, the system power generation efficiency is tested with 50 rpm as the step length, 800 rpm as the starting point, and 50 N.m as the standard to obtain the system power generation efficiency curves at different speeds under 50 N.m torque, and the system power generation efficiency under different engine speed conditions is tested with 50 N.m as the step length, so as to obtain a two-dimensional matrix table of system power generation efficiency at different speeds and different torques, as shown in Table 1 below;

[0043] Table 1 is a two-dimensional matrix table of power generation efficiency of the first range-extending system:

[0044]

[0045] A3. After obtaining the two-dimensional matrix table of power generation efficiency of the first range extender system in step A2, integrate it into the optimal power generation efficiency under different power generation, that is, the optimal power generation efficiency table of the system under different power generation, and the corresponding optimal engine speed curve under different power generation, as shown in the following Tables 3 and 4:

[0047] Table 3 shows the optimal power generation efficiency of the system under different power generation:

[0048] Power generation kw 10 20 30 40 50 60 … 100 110 Optimum efficiency % 86 88 88.9 90 93 94 … 92.5 91

[0049] Table 4 shows the optimal engine speed under different power generation:

[0050] Power generation kw 10 20 30 40 50 60 … 100 110 Optimum speed rpm 950 1154 1250 1450 1650 1800 … 2300 3000

[0051] A4. Repeat steps A1, A2 and A3 to test the second range-extending system, so as to obtain the maximum power generation P02Max diagram of the second range-extending system, such as Figure 4 As shown in Tables 5, 6 and 7 below, the optimal efficiency table of the system under different power generation and the corresponding optimal engine speed curve under different power generation are shown:

[0052] Table 5 is a two-dimensional matrix table of power generation efficiency of the second range-extending system:

[0053]

[0054] Table 6 is the optimal power generation efficiency table of the second range-extending system under different power generation powers:

[0056] Power generation kw 10 20 30 40 50 60 … 100 110 Optimum efficiency % 83 85 88.3 91 95 92 … 94 91

[0057] Table 7 is the engine speed table under the optimal power generation:

[0058] Power generation kw 10 20 30 40 50 60 … 100 110 Optimum speed rpm 100 1200 1600 1750 1900 2050 … 2200 2100

[0059] B. Based on the test results in step A, the maximum power generation Pmax of the dual-range extended-range system can be calculated using the following formula:

[0060] Pmax=P01Max+P02Max;

[0061] Among them, Pmax is the maximum power of the dual-range extender system, P01Max is the maximum power generation of the first range extender system, and P02max is the maximum power generation of the second range extender system;

[0062] C. When the total power generation required by the system is Preq, it is necessary to compare this power with the maximum power generation power Pmax of the dual-range extended system in step B, and take the smaller one to obtain the power arbitration value PreqArb, which is calculated as follows:

[0063] PreqArb = min(Preq, Pmax);

[0064] Among them, Preq is the external power generation value obtained by the total power controller, and Pmax is the maximum power generation value of the dual-range extended system;

[0065] D. Select the optimal power allocation coefficients K1 and K2 under different power requests, where K1 is the allocation coefficient of the range-extended system 1 under a fixed power request PreqArb, and K2 is the allocation coefficient of the range-extended system 2 under a fixed power request PreqArb. The calculation formulas of K1 and K2 are as follows:

[0066] PreqArb=K1*P01+K2*P02;

[0067] Through gradual iteration, under a certain fixed required power Preq, K1=0, 0.1 is set successively and gradually increases to α, where α is the maximum allocation coefficient of K1. The calculation formula is as follows:

[0068] α=P01Max / P01;

[0069] Get different power allocation coefficients K1 and K2 under this power request,

[0070] K2=(PreqArb-K1*P01) / P02;

[0071] Under the fixed required power PreqArb, calculate the system power consumption Pall under different allocation coefficients, and calculate the system minimum power Pallmin and the corresponding K1opc and K2opc;

[0072] Pall=K1*P01 / P01Eff+K2*P02 / P02Eff,

[0073] Pallmin=min(Pall(K1));

[0074] K1opc=F(Pallmin)

[0075] Wherein, P01 and P02 are respectively the optimal power generation values ​​of the range-extending system 01 and the range-extending system 02, P01Eff and P02Eff are respectively the optimal power efficiency values ​​of the system corresponding to the first range-extending system and the second range-extending system, Pall(K1) is the system power consumption value corresponding to the K1 value under the fixed demand power, F(Pallmin) is the K1 value corresponding to the minimum power consumption, K1opc is the optimal allocation coefficient of the first range-extending system under the fixed power request, and K2opc is the optimal allocation coefficient of the second range-extending system under the fixed power request;

[0076] E. According to step D, the optimal K1opc and K2opc values ​​under different power requests Preq can be obtained, and the first extended-range system power allocation value P01req and the second extended-range system power value P02req under different power requests Preq can be obtained. The first extended-range system power allocation value: P01req=Preq*K1, the second extended-range system power value P02req=Preq-P01req, as shown in Table 9 below:

[0077] Table 9 shows the optimal allocation coefficient of K1 under different power requests:

[0078] Power generation kw 10 20 30 40 50 60 …… 100 110 Partition coefficient K1opc 0 0.3 0.5 0.62 0.6 0.5 0.43 0.8

[0079] F. Based on the P01req value, linear interpolation is performed according to Table 3 to find the target engine speed Ndes01 under this power. Similarly, based on the P02req value, linear power interpolation is performed according to Table 7 to find the target engine speed Ndes02 under this power.

[0080] G. The upper-level total power distribution control system EMS sends the first range-extending system power demand P01 and the target speed Ndes01 to the range-extending control system HCU01 through CAN1, and the upper-level total power distribution control system EMS sends the second range-extending system power demand P02 and the target speed Ndes02 to the range-extending control system HCU02 through CAN2, wherein the target torque sent by the range-extending control system HCU01 is Tqdes01=P01req*9550 / Ndes01, and the target torque sent by the range-extending control system HCU02 is Tqdes02=P02req*9550 / Ndes02;

[0081] H. The range-extending control system HCU01 sends the target speed to the generator controller MCU01 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes01. The range-extending control system HCU02 sends the target speed to the generator controller MCU02 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes02;

[0082] I. The range-extended control system HCU01 sends the target torque value to the engine controller ECU01 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque. The range-extended control system HCU02 sends the target torque value to the engine controller ECU02 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque.

[0083] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in the field. This application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-range extended system power distribution system, comprising an upper-level total power distribution control system EMS, a dual-range extended system and a high-voltage power lithium-ion battery, characterized in that: The dual-range extender system includes a first range extender system and a second range extender system. The first range extender system includes a range extender control system HCU01, an engine controller ECU01, an engine 01, a generator 01 and a generator controller MCU01. The second range extender system includes a range extender control system HCU02, an engine controller ECU02, an engine 02, a generator 02 and a generator controller MCU02.

2. The distribution method of the dual-range extended system power distribution system according to claim 1, characterized in that: The allocation steps are as follows: A. First, bench tests are performed on the first range-extending system and the second range-extending system to obtain the maximum power of the system at different speeds and the system efficiency at different powers; A1. Test the maximum power generation of the first range-extending system, obtain the maximum power generation characteristic curve at different speeds, and obtain the maximum power generation P01Max of the first range-extending system; A2. According to step A1, the system power generation efficiency is tested again to obtain the system power generation efficiency curves at different speeds, and the system power generation efficiency at different engine speeds and different torques is tested respectively to obtain the power generation efficiency at different speeds and different torques; A3. After obtaining the two-dimensional matrix table of power generation efficiency of the first range extender system in step A2, integrate it into the optimal power generation efficiency under different power generation, that is, the optimal power generation efficiency table of the system under different power generation, the corresponding optimal engine speed curve under different power generation, A4. Repeat steps A1, A2 and A3 to test the second range extender system, so as to obtain the maximum power generation power P02Max of the second range extender system, the efficiency table under different power generation speeds and torques, the system efficiency table under different power generation powers, and the optimal power generation speed table under different power generation powers; B. Based on the test results in step A, calculate the maximum power generation of the dual-range extended-range system Pmax=P01Max+P02Max; C. When the total power required by the system is Preq, it is necessary to compare this power Preq with the maximum power generation power Pmax of the dual-range extended system in step B, and take the smaller one to obtain PreqArb=min(Preq,Pmax); D. Select power allocation coefficients K1 and K2, where PreqArb = K1*P01+K2*P02; through gradual iteration, under a certain fixed required power Preq, set K1 = 0, 0.1 and gradually increase to 1, and obtain different power allocation coefficients K1 and K2 under this power request, and obtain the system power consumption Pall under different allocation coefficients according to the formula, and select the minimum power consumption Pallmin, as well as the corresponding K1opc and K2opc, where P01 and P02 are the optimal power generation values ​​of the extended-range system 01 and the extended-range system 02 respectively; E. Obtain the optimal K1opc and K2opc values ​​under different power requests Preq according to step D, and obtain the first extended-range system power allocation value P01req and the second extended-range system power value P02req under different power requests Preq; P01req=K1opc*P01; P02req=K2opc*P02; F. Based on the P01req value, linear interpolation is performed according to the engine speed at the optimal power generation to find the target engine speed Ndes01 at this power. Similarly, based on the P02req value, linear power interpolation is performed according to the engine speed at the optimal power generation to find the target engine speed Ndes02 at this power. G. The upper-level total power distribution control system EMS sends the first range-extending system power demand P01req and the target speed Ndes01 to the range-extending control system HCU01 through CAN1, and the upper-level total power distribution control system EMS sends the second range-extending system power demand P02req and the target speed Ndes02 to the range-extending control system HCU02 through CAN2; H. The range-extending control system HCU01 sends the target speed to the generator controller MCU01 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes01. The range-extending control system HCU02 sends the target speed to the generator controller MCU02 through the internal CAN, and the motor performs speed control to control the drag engine to the target speed Ndes02; I. The range-extended control system HCU01 sends the target torque value to the engine controller ECU01 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque. The range-extended control system HCU02 sends the target torque value to the engine controller ECU02 through the internal CAN, and the engine performs torque control to control the engine to output according to the target torque.

3. The distribution method of the dual-range extended system power distribution system according to claim 2, characterized in that: The upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU01 through CAN1, and the extended-range control system HCU01 interacts with the engine controller ECU01 and the generator controller MCU01 through the internal CAN respectively. The engine 01 is directly connected to the generator 01, and the three-phase line (U, V, W) output by the generator 01 is connected to the generator controller MCU01, and the generator controller MCU01 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

4. The distribution method of the dual-range extended system power distribution system according to claim 2, characterized in that: The upper-level total power distribution control system EMS communicates and interacts with the extended-range control system HCU02 through CAN2, and the extended-range control system HCU02 interacts with the engine controller ECU02 and the generator controller MCU02 through the internal CAN respectively. The engine 02 is directly connected to the generator 02, and the generator 02 outputs a three-phase line (U, V, W) connected to the generator controller MCU02, and the generator controller MCU02 is connected to the high-voltage DC lithium-ion battery through a high-voltage DC line.

5. The distribution method of the dual-range extended system power distribution system according to claim 2, characterized in that: The formula used in step D is Pall=K1*P01 / P01Eff+K2*P02 / P02Eff, and Pall is the total energy under the current power generation working condition, including efficiency loss.

6. The distribution method of the dual-range extended system power distribution system according to claim 2, characterized in that: In step G, the target torque sent by the range-extended control system HCU01 is Tqdes01=P01req*9550 / Ndes01, and the target torque sent by the range-extended control system HCU02 is Tqdes02=P02req*9550 / Ndes02.

7. The method for allocating power of a dual-range extended-range system according to claim 2, characterized in that: In the step E, the first range-extended system power allocation value is: P01req=K1*P01, and the second range-extended system power value is P01req=K2*P02.

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