Integrated range extender and vehicle

Abstract

The invention discloses an integrated range extender and a vehicle, and relates to the technical field of range extenders, the integrated range extender comprises a plurality of engines and at least one generator, the output ends of the plurality of engines are connected with the input end of the at least one generator through a gear set, and the output ends of at least part of the engines are connected with a power coupling device. The power coupling device controls power connection or power interruption of the corresponding engine. The power coupling device can control power connection or power interruption of the corresponding engine. In the structure, different numbers of engines can be selectively connected according to actual needs, so that the total displacement of the engines is adjusted, the range extending power generation power is increased, and wider efficient power generation power output is achieved. The multiple engines can achieve backup of the power system, reliability is improved, and the shutdown risk of the system is reduced. Meanwhile, compared with the mode that a plurality of range extending units are additionally arranged, the integrated combination mode is convenient to achieve more compact layout, and the material cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of range extenders, and in particular to an integrated range extender and a vehicle. Background Art

[0002] In the existing range extender system, generally a single engine and motor are integrated, or the engine, generator and speed increaser are integrated. In these systems, the engine's high efficiency range is limited, and it is impossible to achieve high-efficiency power output at full power. Summary of the invention

[0003] The main purpose of the present invention is to provide an integrated range extender and vehicle, which can effectively expand the high-efficiency operating area of ​​the power generation system and achieve power output in a wider and more efficient power generation area.

[0004] To achieve the above-mentioned purpose, the integrated range extender proposed in the present invention comprises multiple engines and at least one generator, the output ends of the multiple engines and the input end of at least one generator are connected through a gear set, and at least some of the output ends of the engines are connected to a power coupling device, and the power coupling device is used to control the power access or power interruption of the corresponding engine.

[0005] In one embodiment, the plurality of engines include a first engine and a plurality of second engines, the output end of the first engine is connected to the gear set, and the output ends of the plurality of second engines are connected to the gear set via the power coupling device.

[0006] In one embodiment, the generator is provided in plurality, wherein:

[0007] At least some of the plurality of said generators are coaxially arranged; and / or,

[0008] At least some of the plurality of generators are arranged in parallel.

[0009] In one embodiment, the plurality of power coupling devices include at least one of a clutch and a synchronizer.

[0010] In one embodiment, the power coupling device includes a clutch, a driving plate of the clutch is connected to the corresponding output end of the engine, and a driven plate of the clutch is connected to the gear set.

[0011] In one embodiment, the gear set is configured as a reduction gear set or a speed increase gear set.

[0012] In one embodiment, the output end of each of the engines is connected to a shock absorbing device.

[0013] In one embodiment, the damping device comprises a torsional damper or a dual mass flywheel.

[0014] In one embodiment, at least some of the plurality of engines are coaxially arranged; and / or,

[0015] At least some of the plurality of engines are arranged in parallel.

[0016] The present invention also proposes a vehicle, comprising the above-mentioned integrated range extender, wherein the integrated range extender comprises at least multiple engines and at least one generator, the output ends of the multiple engines and the input end of at least one generator are connected through a gear set, and at least some of the output ends of the engines are connected to a power coupling device, and the power coupling device is used to control the power access or power interruption of the corresponding engine.

[0017] The technical solution of the present invention integrates multiple engines with at least one generator through a power coupling device and a gear set. The gear set can match the speed of the engine and the generator, and the power coupling device can control the power connection or power interruption of the corresponding engine. In this structure, different numbers of engines can be selected to be connected according to actual needs, so as to adjust the total displacement of the engine to increase the extended-range power generation and achieve a wider range of efficient power generation output. Multiple engines can realize backup of the power system, increase reliability, and reduce the risk of system downtime. At the same time, this integrated combination form is easier to achieve a more compact layout and reduce material costs compared to adding multiple extended-range units. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a first embodiment of an integrated range extender provided by the present invention;

[0020] Figure 2 This is a schematic structural diagram of the second embodiment of the integrated range extender provided by the present invention.

[0021] Description of Figure Numbers:

[0022] 100. Integrated range extender; 1. engine; 2. generator; 3. gear set; 4. power coupling device; 5. shock absorbing device.

[0023] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0024] 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.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] In the existing range extender system, such as the direct-connected range extender, a single engine and motor are integrated; such as the range extender with a speed increaser, the engine, generator and speed increaser are integrated. The efficient operation area of ​​a single engine is limited. Taking the 1.5T engine as an example, the efficient operation area is 25kW~60kW. When it is necessary to increase the range-extended power generation, a larger displacement engine must be selected, but the efficient operation area of ​​a larger displacement engine will also deviate. Taking the displacement adjustment to 2.0T engine as an example, the efficient operation area is 40kW~90kW, which cannot guarantee a wider efficient power generation area; but the power generation area used hopes to achieve efficient power generation in a wider power range, and a single direct-connected range extender cannot meet the demand.

[0028] The present invention proposes an integrated range extender that can integrate multiple engines and multiple generators, which can effectively expand the high-efficiency operating area of ​​the power generation system, achieve power output in a wider and more efficient power generation area, and effectively ensure the reliable operation of the power generation system.

[0029] It should be noted that the integrated range extender can be used in four-stroke gasoline engines, four-stroke diesel engines, hybrid power systems, range extender systems and other environments.

[0030] See also Figure 1 and Figure 2 The integrated range extender 100 includes multiple engines 1 and at least one generator 2, the output ends of the multiple engines 1 and the input end of at least one generator 2 are connected through a gear set 3, and the output ends of at least some of the engines 1 are connected to a power coupling device 4, and the power coupling device 4 is used to control the power connection or power interruption of the corresponding engine 1.

[0031] The technical solution of the present invention integrates multiple engines 1 with at least one generator 2 through a power coupling device 4 and a gear set 3. The gear set 3 can match the speed of the engine 1 and the generator 2, and the power coupling device 4 can control the power access or power interruption of the corresponding engine 1. In this structure, different numbers of engines 1 can be selected to be connected according to actual needs, so as to adjust the total displacement of the engine 1 to increase the extended-range power generation and achieve a wider range of efficient power generation output. Multiple engines 1 can achieve backup of the power system, increase reliability, and reduce the risk of system downtime. At the same time, this integrated combination form is easier to achieve a more compact layout and reduce material costs compared to adding multiple extended-range units.

[0032] For example, the existing two sets of single generators can achieve an efficient output of 25kW to 80kW, while the patent of the present invention can achieve an efficient power output in the range of 25kW to 160kW.

[0033] Specifically, the power coupling device 4 is provided to achieve more efficient power transmission. When a certain engine 1 needs to be stopped, the engine 1 can be disconnected from the power system to reduce friction loss and improve the power generation efficiency of the system.

[0034] When selecting the engine 1 and the generator 2, factors such as power, rotation speed, fuel consumption and application environment may be considered to select the appropriate model of the engine 1 and the generator 2.

[0035] The present invention does not limit the specific structural form of the gear set 3. Gears with different numbers of teeth can be designed to match the working ranges of the engine 1 and the generator 2 to obtain high power generation efficiency. In different application scenarios, the gear set 3 can be set as a planetary gear set, including components such as a sun gear, a planet carrier, and a ring gear.

[0036] It should be noted that a power coupling device 4 can be provided at the output end of each engine 1. Considering that the operation of the system requires the continuous access of at least one engine 1, in some embodiments, the multiple engines 1 include a first engine and multiple second engines, the output end of the first engine is connected to the gear set 3, and the output ends of the multiple second engines are connected to the gear set 3 through the power coupling device 4. That is, the first engine serves as the main engine, always providing power input to the system, and the multiple second engines serve as auxiliary engines. According to the actual range extension needs, some or all of the second engines can be selected for access. Different numbers of second engines are integrated with the first engine so that the system has different displacements.

[0037] Furthermore, the generator 2 is provided in plurality, and a multi-interface flange can be used to realize the integration of multiple engines 1 and multiple generators 2.

[0038] The present invention does not limit the layout of the multiple generators 2. For example, when the multiple generators 2 include only two, the two generators 2 can be coaxially arranged or in parallel. When the multiple generators 2 include three, two of the generators 2 can be coaxially arranged, and the other generator 2 can be arranged in parallel with one of the aforementioned generators 2. It is also possible to set the three generators 2 on the same side of the gear set 3, and all are arranged in parallel. When the number of generators 2 is set to four, one or two coaxially arranged transfer shafts can be set to connect to the gear set 3, and every two generators 2 are connected to one of the transfer shafts in parallel. That is, when the generators 2 are arranged, a reasonable number of generators 2 can be set coaxially and / or in parallel according to the actual design space and considering the avoidance with other mechanisms, so as to facilitate the realization of a compact layout, that is, multiple generators 2 can be connected to the system in parallel or in series.

[0039] Similarly, the present invention does not limit the layout of the multiple engines 1. For example, when the multiple engines 1 include only two, the two engines 1 can be coaxially arranged or in parallel. When the multiple engines 1 include three, two of the engines 1 can be coaxially arranged, and the other engine 1 can be arranged in parallel with one of the aforementioned engines 1. It is also possible to set the three engines 1 on the same side of the gear set 3, all of which are arranged in parallel. When the number of engines 1 is set to four, one or two coaxially arranged transfer shafts can be set to connect to the gear set 3, and every two engines 1 are connected to one of the transfer shafts in parallel. That is, when the engines 1 are arranged, a reasonable number of engines 1 can be coaxially and / or in parallel according to the actual design space and considering the avoidance with other mechanisms, so as to facilitate the realization of a compact layout, that is, multiple generators 2 can be connected to the system in parallel or in series.

[0040] It should be understood that multiple engines 1 and multiple generators 2 should be reasonably avoided and staggered when laid out.

[0041] The present invention does not limit the specific form of the power coupling device, as long as it can realize the functions of connection and disconnection. For example, the power coupling device 4 can be set as a clutch or a synchronizer. The structures of multiple power coupling devices 4 can be the same or different. For example, some power coupling devices 4 are set as clutches, and some power coupling devices 4 can be set as synchronizers.

[0042] In some embodiments, the power coupling device 4 includes a clutch, the driving plate of the clutch is connected to the output end of the corresponding engine 1, and the driven plate of the clutch is connected to the gear set 3. The clutch can be selected as an overrunning clutch, a hydraulic clutch or a manual clutch.

[0043] Furthermore, according to actual matching requirements, the gear set 3 can be configured as a speed reduction gear set or a speed increase gear set.

[0044] Considering the isolation and vibration reduction during the operation of the engine 1, in some embodiments, the output end of each engine 1 is connected to a vibration reduction device 5. Specifically, the vibration reduction device 5 includes a torsional vibration damper or a dual mass flywheel. According to the design requirements, a suitable structure is selected to be connected thereto, so as to effectively isolate the torsional vibration of the crankshaft of the engine 1.

[0045] For an engine 1 connected to a power coupling device 4 , the damping device 5 should be located between the power coupling device 4 and the engine 1 .

[0046] Example 1

[0047] Please refer to Figure 1 The two engines 1 are distributed on opposite sides of the reduction gear set and are coaxially arranged. The output end of each engine 1 is connected to a shock absorber and a clutch in sequence. The generator 2 is arranged in parallel with one of the engines 1 and is located on the side of the engine 1.

[0048] In this embodiment, the power generation efficiency of the system is improved by integrating a generator 2 and a plurality of engines 1 .

[0049] Example 2

[0050] Please refer to Figure 2 The two engines 1 are distributed on opposite sides of the reduction gear set and are coaxially arranged. The output end of each engine 1 is connected to a shock absorber and a clutch in sequence. The two generators 2 are coaxially arranged and located on the sides of the two engines 1. Each generator 2 is arranged side by side with the corresponding engine 1.

[0051] In this embodiment, the power generation efficiency of the system is improved by integrating two generators 2 and a plurality of engines 1.

[0052] Example 3

[0053] The upper part of the speed-increasing gear set is provided with two coaxially arranged first transfer shafts, and the lower part is provided with two coaxially arranged second transfer shafts. The side of each of the first transfer shafts facing away from the speed-increasing gear set is connected to the output end of two parallel engines 1, and the side of each of the second transfer shafts facing away from the speed-increasing gear set is connected to the input end of two parallel generators 2, that is, on two opposite sides of the speed-increasing gear set, each side is provided with two parallel engines 1 and two generators 2, and multiple generators 2 are directly connected, one of the engines 1 is used as the main engine, which is connected after connecting to the dual mass flywheel, and the other engines 1 are used as auxiliary engines, which are connected after connecting to the dual mass flywheel and the clutch.

[0054] In this embodiment, the power generation efficiency of the system is improved by integrating four generators 2 and four engines 1.

[0055] The integrated range extender 100 proposed in the present invention is integrated with a power coupling device 4 and a reducer to realize the integration of multiple engines 1; when a certain engine 1 needs to be stopped, the engine 1 can be disconnected from the power system to reduce friction loss and improve the power generation efficiency of the system; it can achieve a wider range of efficient power generation output, and relative to multiple range extender units, the integrated type can achieve a more compact layout and reduce material costs; at the same time, multiple engines 1 can realize backup of the power system, increase the reliability of the range extender, and reduce the risk of system shutdown.

[0056] The present invention also proposes a vehicle, which includes an integrated range extender 100. The specific structure of the integrated range extender 100 refers to the above-mentioned embodiment. Since the present vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0057] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An integrated range extender, characterized in that: It comprises a plurality of engines and at least one generator, wherein the output ends of the plurality of engines and the input end of at least one of the generators are connected via a gear set, and at least some of the output ends of the engines are connected to a power coupling device, and the power coupling device is used to control the power access or power interruption of the corresponding engine.

2. The integrated range extender according to claim 1, characterized in that: The multiple engines include a first engine and multiple second engines, the output end of the first engine is connected to the gear set, and the output ends of the multiple second engines are connected to the gear set through the power coupling device.

3. The integrated range extender according to claim 1, characterized in that: The generator is provided in plurality, wherein: At least some of the plurality of said generators are coaxially arranged; and / or, At least some of the plurality of generators are arranged in parallel.

4. The integrated range extender according to claim 1, characterized in that: The plurality of power coupling devices include at least one of a clutch and a synchronizer.

5. The integrated range extender according to claim 4, characterized in that: The power coupling device comprises a clutch, a driving plate of the clutch is connected to the corresponding output end of the engine, and a driven plate of the clutch is connected to the gear set.

6. The integrated range extender according to claim 1, characterized in that: The gear set is configured as a reduction gear set or a speed increase gear set.

7. The integrated range extender according to claim 1, characterized in that: The output end of each engine is connected with a shock absorbing device.

8. The integrated range extender according to claim 7, characterized in that: The damping device comprises a torsional damper or a dual mass flywheel.

9. The integrated range extender according to claim 1, characterized in that: At least some of the plurality of said engines are coaxially arranged; and / or, At least some of the plurality of engines are arranged in parallel.

10. A vehicle, characterized in that: Comprising an integrated range extender as described in any one of claims 1 to 9.

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