CN114744826A - External rotor generator for range extender - Google Patents
External rotor generator for range extender Download PDFInfo
- Publication number
- CN114744826A CN114744826A CN202210290916.XA CN202210290916A CN114744826A CN 114744826 A CN114744826 A CN 114744826A CN 202210290916 A CN202210290916 A CN 202210290916A CN 114744826 A CN114744826 A CN 114744826A
- Authority
- CN
- China
- Prior art keywords
- rotor
- shell
- flywheel
- boss
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/003—Couplings; Details of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides an external rotor generator for a range extender, which comprises: the flywheel type rotary transformer comprises a stator shell, a motor shell, a stator core, a flywheel rotor, a transfer shaft and a rotary transformer, wherein the transfer shaft is in a stepped convex structure and is provided with a first boss, a second boss and a third boss; the first boss of the transfer shaft penetrates through the flywheel rotor to be fixed with the inner ring of the rotary transformer, the outer ring of the rotary transformer is fixedly connected with the motor shell, and the flywheel rotor is sleeved on the second boss of the transfer shaft in a penetrating manner and is fixed with the third boss through a bolt; the stator core is pressed on the annular convex structure of the stator shell in the inner cavity of the flywheel rotor; the outer rotor generator for the range extender has the advantages of short length, light weight, simple integral structure, few fault points and the like, and can enable the weight of a rotor to be lighter under the condition of keeping the rotary inertia unchanged and reduce the influence of the weight of the rotor on an engine bearing bush.
Description
Technical Field
The invention belongs to the technical field of generator equipment, and particularly relates to an outer rotor generator for a range extender.
Background
Energy conservation and environmental protection are the permanent subjects in the field of automobiles, and it is well known that a pure electric automobile cannot meet long-distance travel due to the influence of factors such as low specific energy and high price of the conventional power battery, and people have mileage anxiety on the pure electric automobile. The range extender can effectively solve the problem of mileage anxiety of the pure electric vehicle and becomes the development trend of new energy vehicles. The range extender generally consists of an engine + a generator. The generator comprises a generator rotor, an engine crankshaft, a generator shell, a generator cover and a generator cover, wherein the generator rotor is directly connected with the engine crankshaft; from the generator structure, the generator stator is arranged in the hub-shaped rotor, and the generator stator is arranged on the side of the inner water jacket of the shell and is cooled by the inner water jacket. However, the generator is internally provided with a flywheel, a flexible connecting disc, a bearing and other structures which are complicated, so that the whole length and the size are overlarge, and the overlarge rotor mass can influence the bearing bush of the generator.
Disclosure of Invention
The invention aims to provide an outer rotor generator for a range extender, aiming at improving the structure of a motor, optimizing the volume and the mass and simultaneously enabling the rotor to be lighter under the condition of unchanged rotational inertia.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the invention provides an external rotor generator for a range extender, which comprises:
the outer side of the stator shell is of a hollow disc structure, the inner side of the stator shell is of an annular bulge structure, and the stator shell and the motor shell are fixedly connected through bolts;
the stator core, the flywheel rotor, the transfer shaft and the rotary transformer are arranged in the stator shell and the motor shell, a winding is embedded on the stator core, and the flywheel rotor is provided with an inner cavity;
the transfer shaft is of a stepped convex structure and is provided with a first boss, a second boss and a third boss; the first boss of the transfer shaft penetrates through the flywheel rotor to be fixed with the inner ring of the rotary transformer, the outer ring of the rotary transformer is fixedly connected with the motor shell, and the flywheel rotor is sleeved on the second boss of the transfer shaft in a penetrating manner and is fixed with the third boss through a bolt;
and the stator core is pressed on the annular convex structure of the stator shell in the inner cavity of the flywheel rotor.
As a further improvement of the present invention, the stator housing includes: the water-saving device comprises an outer shell and an inner shell, wherein the outer shell is provided with an annular water channel.
As a further improvement of the present invention, the flywheel rotor includes: the permanent magnet is arranged in the rotor core, the flywheel hub is fixedly connected with the flywheel shell, and the rotor core is fixed on the inner wall of the flywheel shell; and the flywheel hub is provided with a central through hole and a lightening hole.
As a further improvement of the invention, the method also comprises the following steps: the motor comprises a rear cover and a socket, wherein the rear cover is fixedly connected with a motor shell, and the socket is arranged on the rear cover.
As a further improvement of the invention, the method also comprises the following steps: the water inlet pipe and the water outlet pipe are respectively and fixedly connected with the stator shell, and the junction box is fixedly connected with the motor shell.
The invention has the advantages that:
compared with the traditional independent motor, the external rotor generator for the range extender provided by the invention has the advantages that the traditional flywheel, flexible connecting disc, bearing and the like between the generator and the engine are eliminated, the length is short, the weight is light, the efficiency is high, the integral structure is simple, the number of fault points is small, and the like. Compared with an integrated inner rotor range extender generator, the outer rotor generator is shorter in axial size, and the rotor is lighter in weight due to the fact that the outer diameter of the rotor is larger under the condition that the rotational inertia is kept unchanged, so that the influence of the weight of the rotor on an engine bearing bush is greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of an outer rotor generator of the invention mounted on a range extender;
fig. 2 is a schematic cross-sectional structural view of the external rotor generator according to the present invention;
FIG. 3 is a schematic structural view of a stator housing according to the present invention;
FIG. 4 is a schematic view of an adapter shaft according to the present invention;
FIG. 5 is a schematic cross-sectional view of a flywheel rotor according to the present invention;
FIG. 6 is a side view of a flywheel rotor according to the present invention;
fig. 7 is a schematic structural view of the external rotor generator for the range extender according to the present invention.
In the figure: 100-engine, 101-crankshaft, 200-external rotor generator, 201-stator shell, 2011-outer shell, 2012-inner shell, 2013-annular water channel, 202-motor shell, 203-flywheel rotor, 2031-flywheel hub, 2032-flywheel shell, 2033-rotor iron core, 2034-central through hole, 2035-lightening hole, 204-transfer shaft, 2041-first boss, 2042-second boss, 2043-third boss, 2044-first screw hole, 2045-second screw hole, 205-rotary transformer, 206-stator iron core, 207-rear cover, 208-socket, 209-water inlet pipe, 210-water outlet pipe and 211-junction box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides an outer rotor generator for a range extender, as shown in fig. 1, an engine 100 is connected with an outer rotor generator 200 to form the range extender, an overall structure of the range extender depends on a structure of the outer rotor generator 200, and as shown in fig. 2, the outer rotor generator 200 includes: the stator comprises a stator shell 201 and a motor shell 202, wherein the outer side of the stator shell 201 is of a hollow disc structure, the inner side of the stator shell 201 is of an annular bulge structure, the stator shell 201 and the motor shell 202 are fixedly connected through bolts, and the stator shell 201 is also used for being fixedly connected with the shell of the engine 100; a stator core 206, a flywheel rotor 203, a transfer shaft 204 and a rotary transformer 205 which are arranged in the stator housing 201 and the motor housing 202, wherein the stator core 206 is embedded with windings, and the flywheel rotor 203 is provided with an inner cavity; as shown in fig. 4, the adapter shaft 204 is a stepped convex structure, and is provided with a first boss 2041, a second boss 2042 and a third boss 2043; the first boss 2041 of the transfer shaft 204 penetrates through the flywheel rotor 203 and is fixed with the inner ring of the rotary transformer 205, the first boss 2041 is used for transmitting power to the rotary transformer 205, the outer ring of the rotary transformer 205 is fixedly connected with the motor housing 202, the front end of the third boss 2043 is provided with a first screw hole 2044, the rear end of the third boss 2043 is provided with a second screw hole 2045, the flywheel rotor 203 is sleeved on the second boss 2042 of the transfer shaft 204 in a penetrating manner and is fixed with the third boss 2043 at the first screw hole 2044 through a bolt, and the second boss 2042 is used for transmitting power to the flywheel rotor 203; the second screw hole 2045 of the third boss 2043 at the rear end is used for being fixedly connected with the crankshaft 101 of the engine 100 to receive the power output of the engine 100, so that the crankshaft 101, the adapter shaft 204, the flywheel rotor 203 and the rotary transformer 205 of the engine 100 can keep synchronous rotation; the stator core 206 is press-fitted on the annular protrusion of the stator housing 201 in the inner cavity of the flywheel rotor 203, and the inner cavity of the flywheel rotor 203 can accommodate the annular protrusion partially inside the stator housing 201.
In one embodiment, as shown in fig. 3, the stator housing 201 includes: the heat dissipation device comprises an outer shell 2011 and an inner shell 2012, wherein the outer shell 2011 is provided with a ring-shaped water channel 2013 for heat dissipation.
In some embodiments, as shown in fig. 5 and 6, flywheel rotor 203 includes: the flywheel core 2033 is fixedly connected with the flywheel housing 2032, and the rotor core 2033 is fixed on the inner wall of the flywheel housing 2032; the flywheel hub 2031 is provided with a center through hole 2034 for sleeving the transfer shaft 204 and a lightening hole 2035 for reducing the overall mass; it can be seen that the axial length of the flywheel housing 2032 determines the axial dimensions of the flywheel rotor 203 and the outer rotor generator 200, and the outer diameter of the flywheel hub 2031 determines the outer diameter of the flywheel rotor 203, so that the rotational inertia of the flywheel rotor 203 can still be unchanged by increasing the outer diameter of the flywheel hub 2031 and decreasing the axial length of the flywheel housing 2032, and compared with the inner rotor generator in the prior art, the mass of the inner rotor generator can be reduced by 20-30% with the power generator rotor; the flywheel hub 2031 and the flywheel housing 2032 can also be made of an integrated structure by stamping or casting.
In some embodiments, as shown in fig. 7, it may further include: a rear cover 207 and a socket 208, the rear cover 207 being fixedly connected to the motor housing 202, the socket 208 being provided on the rear cover 207.
In some embodiments, please continue to refer to fig. 7, which may further include: the water inlet pipe 209, the outlet pipe 210 and the terminal box 211, the water inlet pipe 209 and the outlet pipe 210 are respectively and fixedly connected with the stator housing 201, and the terminal box 211 is fixedly connected with the motor housing 202.
Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," etc., in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.
Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.
Claims (5)
1. An outer rotor generator for a range extender, comprising:
the outer side of the stator shell is of a hollow disc structure, the inner side of the stator shell is of an annular bulge structure, and the stator shell and the motor shell are fixedly connected through bolts;
the stator core, the flywheel rotor, the transfer shaft and the rotary transformer are arranged in the stator shell and the motor shell, a winding is embedded on the stator core, and the flywheel rotor is provided with an inner cavity;
the transfer shaft is of a stepped convex structure and is provided with a first boss, a second boss and a third boss; the first boss of the transfer shaft penetrates through the flywheel rotor to be fixed with the inner ring of the rotary transformer, the outer ring of the rotary transformer is fixedly connected with the motor shell, and the flywheel rotor is sleeved on the second boss of the transfer shaft in a penetrating manner and is fixed with the third boss through a bolt;
and the stator core is pressed on the annular convex structure of the stator shell in the inner cavity of the flywheel rotor.
2. The external rotor electric generator for range extender of claim 1, wherein the stator housing includes: the water-saving device comprises an outer shell and an inner shell, wherein the outer shell is provided with an annular water channel.
3. An external rotor electric generator for a range extender as claimed in claim 1 or 2, wherein said flywheel rotor comprises: the permanent magnet is arranged in the rotor core, the flywheel hub is fixedly connected with the flywheel shell, and the rotor core is fixed on the inner wall of the flywheel shell; and the flywheel hub is provided with a central through hole and a lightening hole.
4. An outer rotor generator for a range extender according to claim 1 or 2, further comprising: the motor comprises a rear cover and a socket, wherein the rear cover is fixedly connected with a motor shell, and the socket is arranged on the rear cover.
5. An external rotor electric generator for a range extender as claimed in claim 1 or 2, further comprising: the water inlet pipe and the water outlet pipe are respectively and fixedly connected with the stator shell, and the junction box is fixedly connected with the motor shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210290916.XA CN114744826A (en) | 2022-03-23 | 2022-03-23 | External rotor generator for range extender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210290916.XA CN114744826A (en) | 2022-03-23 | 2022-03-23 | External rotor generator for range extender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114744826A true CN114744826A (en) | 2022-07-12 |
Family
ID=82276960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210290916.XA Pending CN114744826A (en) | 2022-03-23 | 2022-03-23 | External rotor generator for range extender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114744826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116766963A (en) * | 2023-06-29 | 2023-09-19 | 玉柴芯蓝新能源动力科技有限公司 | Range extender for hydrogen-burning engine for generating electricity |
-
2022
- 2022-03-23 CN CN202210290916.XA patent/CN114744826A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116766963A (en) * | 2023-06-29 | 2023-09-19 | 玉柴芯蓝新能源动力科技有限公司 | Range extender for hydrogen-burning engine for generating electricity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105927294B (en) | Exhaust turbine generation device | |
| EP3778280B1 (en) | Engine and electric motor assembly, and vehicle driving device | |
| EP3796524A1 (en) | Engine-and-electric-machine assembly | |
| EP3795820A1 (en) | Engine-and-electric-machine assembly | |
| CN114744826A (en) | External rotor generator for range extender | |
| CN112510949A (en) | No yoke stator module and axial permanent magnetism wheel hub formula motor | |
| CN217643044U (en) | External rotor generator for range extender | |
| CN217643045U (en) | External rotor generator for range extender | |
| CN114744825A (en) | External rotor generator for range extender | |
| CN214124956U (en) | No yoke stator module and axial permanent magnetism wheel hub formula motor | |
| CN214007547U (en) | Novel oil-free air compressor for hydrogen fuel cell | |
| CN114977606A (en) | Multi-motor coupling structure | |
| CN109412337B (en) | System structure of range extender | |
| CN216122066U (en) | Range extender motor structure | |
| CN112003404A (en) | Light built-in chargeable permanent magnet generator and mounting structure | |
| CN216121975U (en) | Range extender structure with rotor provided with balance block | |
| CN216121972U (en) | Range extender structure with balance block and isolated motor cavity | |
| CN216122154U (en) | Range extender structure with double supports for inner rotor and outer rotor | |
| CN220865227U (en) | Range extender structure | |
| CN216086345U (en) | Range extender motor structure with shell supported | |
| CN216122073U (en) | Range extender structure with starting gear ring and flywheel shell connecting plate | |
| CN220865229U (en) | Range extender assembly | |
| CN214380492U (en) | Lightweight flywheel generator structure | |
| CN221354080U (en) | Compact centrally-mounted motor | |
| CN215498483U (en) | Direct-connected type rotor support range extender structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |