CN212543590U

CN212543590U - Rotary transformer suitable for range extender and range extender

Info

Publication number: CN212543590U
Application number: CN202021630542.4U
Authority: CN
Inventors: 许可诚; 海比特
Original assignee: Ricardo Technology Consulting Shanghai Co ltd
Current assignee: Ricardo Technology Consulting Shanghai Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-02-12
Anticipated expiration: 2030-08-07

Abstract

The utility model provides a rotary transformer suitable for range extender and range extender, comprising a coupling connecting disc, an elastic coupling, a rotating shaft, a bearing fixing disc, a rotary transformer stator and a rotary transformer rotor; the coupling connecting disc is connected with the elastic coupling, the elastic coupling is connected with the rotating shaft, the rotating shaft is provided with a bearing, the bearing is connected with a bearing fixing disc, the bearing fixing disc is provided with a rotary transformer stator, and a rotary transformer rotor is arranged on the rotating shaft at a position corresponding to the rotary transformer stator and can rotate along with the rotating shaft; the coupling connecting disc is connected to the motor rotating hub. The utility model discloses a with rotary transformer's pivot setting in the inside of motor commentaries on classics hub or the cover establish the outside that the motor changes the hub, effectively practice thrift the axial space, be applicable to and arrange that the space is more limited, especially have the device of strict demand to motor axial dimension.

Description

Rotary transformer suitable for range extender and range extender

Technical Field

The utility model relates to the technical field of electric machines, specifically, relate to a rotary transformer and increase journey ware suitable for increase journey ware.

Background

The rotary transformer is mainly used for measuring the absolute position of the motor rotor so as to assist in implementing a corresponding control strategy. The rotor of a general rotary transformer is directly fixed on the output shaft of the motor, and the stator of the rotary transformer is arranged on the shell. The installation of the rotor of a general rotary transformer has a relatively strict requirement for the runout of a rotating shaft (<0.5mm, for small-sized rotary transformers), and generally has no trouble of the runout problem for motors supported by bearings, but for a similar framework of a range extender, because the arrangement space is very limited (the requirement for the maximum axial length of the motor is strict) and a rotating hub is directly coupled on a crankshaft of an engine, the oil clearance of the crankshaft is relatively large (about 0.4mm), the runout of the crankshaft is relatively large, and the measurement precision of the rotary transformer after installation is influenced.

Patent document No. CN205984623U discloses a reluctance type rotary transformer, which includes a stator core, an excitation winding, a sine-phase output winding, a cosine-phase output winding, and a rotor, wherein the stator core is formed by laminating stator laminations, 10 slots are uniformly distributed on the stator core, and the excitation winding, the sine-phase output winding, and the cosine-phase output winding are separately placed in each slot; the excitation winding is a concentrated winding with equal turns in each slot and is reversely connected in series slot by slot; the sine phase output winding and the cosine phase output winding are distributed windings and are connected in series slot by slot; the excircle of the stator core is fixedly connected with the inner circle of the motor shell, and the rotor is connected with the motor shaft through a key. The technical scheme has the advantages of simple structure, high reliability, no abrasion, easy maintenance, small temperature drift and the like, and is suitable for position detection of permanent magnet synchronous motors, switched reluctance motors and the like. However, the resolver stator is installed on the motor shell, and the resolver rotor is installed on the motor shaft, so that the occupied space is large, and the resolver stator is not suitable for a motor with a small axial length.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a resolver and increase journey ware suitable for increase journey ware.

According to the utility model provides a rotary transformer suitable for increase journey ware, including coupling joint dish, elastic coupling, rotation axis, bearing fixed disk, rotary transformer stator and rotary transformer rotor;

the coupling connecting disc is connected with the elastic coupling, the elastic coupling is connected with the rotating shaft, the rotating shaft is provided with a bearing, the bearing is connected with a bearing fixing disc, the bearing fixing disc is provided with a rotary transformer stator, and a rotary transformer rotor is arranged on the rotating shaft at a position corresponding to the rotary transformer stator and can rotate along with the rotating shaft;

the coupling connecting disc is connected to the motor rotating hub.

Preferably, the bearing comprises a first bearing and a second bearing, and the bearing fixing disc is connected to the first bearing and the second bearing.

Preferably, the edge of the bearing fixing disk is fixedly connected to the motor casing.

Preferably, the resolver rotor and the resolver stator are located at the same position in the axial direction of the rotating shaft, and the resolver rotor rotates relative to the resolver stator.

Preferably, the rotating shaft is located inside the rotating hub of the motor.

Preferably, the rotating shaft is a hollow structure, and the rotating shaft sleeve is arranged outside the rotating hub of the motor.

the coupling connecting disc is connected to the motor rotating hub;

the bearing comprises a first bearing and a second bearing, and a bearing fixing disc is connected to the first bearing and the second bearing;

the edge of the bearing fixing disc is fixedly connected to the motor shell;

the rotary transformer rotor and the rotary transformer stator are positioned at the same position in the axial direction of the rotating shaft, and the rotary transformer rotor rotates relative to the rotary transformer stator;

the rotating shaft is located inside the motor rotating hub, or the rotating shaft is of a hollow structure and is sleeved outside the motor rotating hub.

According to the utility model provides a range extender, including the resolver who is applicable to range extender still include engine, motor;

the engine comprises an engine crankshaft, and the motor comprises a motor rotating hub, a motor rotor, a motor stator and a motor shell;

the motor rotating hub is coupled to an engine crankshaft, the motor rotor is arranged on the motor rotating hub, the motor stator is arranged on the motor shell, the motor rotor and the motor stator are arranged oppositely, and the motor rotor can rotate relative to the motor stator.

Preferably, the motor further comprises a speed reducer which is connected to the motor rotating hub.

Preferably, the device further comprises a speed reducer connected to the rotating shaft.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses compact structure installs the resolver stator in the pivot through the bearing fixed disk, need not the resolver stator and installs on the motor casing, effectively practices thrift the space.

2. The utility model discloses motor commentaries on classics hub direct coupling effectively practices thrift the space on engine crankshaft, simultaneously through adopting elastic coupling, is connected motor commentaries on classics hub and pivot, effectively avoids engine crankshaft to beat the measurement resolver measurement error who brings.

3. The utility model discloses a with rotary transformer's pivot setting in the inside of motor commentaries on classics hub or the cover establish the outside that the motor changes the hub, effectively practice thrift the axial space, be applicable to and arrange that the space is more limited, especially have the device of strict demand to motor axial dimension.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention.

The figures show that:

coupling connection plate 1 engine crankshaft 8

Elastic coupling 2 motor rotating hub 9

Bearing 3 motor rotor 10

Bearing fixing disc 4 motor stator 11

Resolver stator 5 motor housing 12

Resolver rotor 6 speed reducer 13

Rotating shaft 14 of engine 7

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

According to the utility model provides a rotary transformer suitable for increase journey ware, as shown in fig. 1, including shaft coupling connection pad 1, elastic coupling 2, rotation axis 14, bearing 3, bearing fixed disk 4, rotary transformer stator 5 and rotary transformer rotor 6; the coupling connecting disc 1 is connected with the elastic coupling 2, the elastic coupling 2 is connected with the rotating shaft 14, the bearing 3 is arranged on the rotating shaft 14, the bearing 3 is connected with the bearing fixing disc 4, the rotary transformer stator 5 is arranged on the bearing fixing disc 4, and the rotary transformer rotor 6 is arranged on the rotating shaft 14 at a position corresponding to the rotary transformer stator 5 and can rotate along with the rotating shaft 14; the coupling connecting disc 1 is connected to a motor rotating hub 9. The utility model discloses an introduce elastic coupling 4 and corresponding pivot 14 and accomplish resolver's installation.

Bearing 3 includes first bearing, second bearing, and bearing fixed disk 4 is connected on first bearing, second bearing, and bearing fixed disk 4 passes through bearing 3 and connects pivot 14, and bearing fixed disk 4 can not rotate along with pivot 14. The edge of the bearing fixing disc 4 is connected and fixed on the motor shell 12. The resolver rotor 6 and the resolver stator 5 are located at the same position in the axial direction of the rotating shaft 14, and the resolver rotor 6 rotates relative to the resolver stator 5. The rotating shaft 14 is positioned inside the motor rotating hub 9; or, the rotating shaft 14 is a hollow structure, and the rotating shaft 14 is sleeved outside the motor rotating hub 9.

When the range extender arranges that limited and engine crankshaft beats greatly, especially the axial dimension of motor receives strict restraint (arrange the space and compare the limitation), the utility model discloses can utilize motor commentaries on classics hub 9 inside or outside space to carry out resolver's installation ingeniously, motor commentaries on classics hub 9 direct coupling is on engine crankshaft 8, is equivalent to the motor shaft.

According to the utility model, as shown in fig. 1, the range extender comprises the rotary transformer suitable for the range extender, an engine 7 and a motor; the engine 7 comprises an engine crankshaft 8, and the motor comprises a motor rotating hub 9, a motor rotor 10, a motor stator 11 and a motor shell 12; the motor rotor 9 is coupled to the engine crankshaft 8, the motor rotor 10 is disposed on the motor rotor 9, the motor stator 11 is disposed on the motor housing 12, the motor rotor 10 is disposed opposite to the motor stator 11, and the motor rotor 10 is capable of rotating relative to the motor stator 11. The motor rotor also comprises a speed reducer 13, wherein the speed reducer 13 is connected to the motor rotor hub 9; alternatively, the speed reducer 13 is connected to the rotating shaft 14.

The utility model discloses an introduce coupling joint dish 1, elastic coupling 2 and rotatory pivot subassembly (including bearing 3, bearing fixed disk 4 etc.), absorb the dynamic influence when jumping the influence and the system operation that bring of engine crankshaft 8 to this accomplishes resolver's installation, and the operation of easily follow-up mechanical zero setting.

The utility model discloses provide a new change of revolving and arrange scheme for receiving the motor that spatial arrangement limitation and beat the problem influence, main advantage is: better precision control (mainly aiming at the jumping requirement of the rotary transformer installation); the motor can be suitable for motors with smaller sizes, and does not occupy too much arrangement space; the cost of the resolver can be reduced.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A rotary transformer suitable for a range extender is characterized by comprising a coupling connecting disc (1), an elastic coupling (2), a rotating shaft (14), a bearing (3), a bearing fixing disc (4), a rotary transformer stator (5) and a rotary transformer rotor (6);

the coupling connecting disc (1) is connected with the elastic coupling (2), the elastic coupling (2) is connected with the rotating shaft (14), the bearing (3) is arranged on the rotating shaft (14), the bearing (3) is connected with the bearing fixing disc (4), the rotary transformer stator (5) is arranged on the bearing fixing disc (4), and the rotary transformer rotor (6) is arranged on the rotating shaft (14) at a position corresponding to the rotary transformer stator (5) and can rotate along with the rotating shaft (14);

the coupling connecting disc (1) is connected to a motor rotating hub (9).

2. The resolver suitable for a range extender according to claim 1, wherein the bearing (3) comprises a first bearing and a second bearing, and the bearing fixing disc (4) is connected to the first bearing and the second bearing.

3. The resolver for range extender of claim 2, wherein the edge of the bearing retainer plate (4) is fixed to the motor housing (12).

4. The resolver for range extender according to claim 1, wherein the resolver rotor (6) and the resolver stator (5) are located at the same position in the axial direction of the rotating shaft (14), and the resolver rotor (6) rotates with respect to the resolver stator (5).

5. Resolver suitable for range extenders according to claim 1, characterised in that the rotating shaft (14) is located inside the motor hub (9).

6. The rotary transformer for range extender according to claim 1, wherein the rotating shaft (14) is a hollow structure, and the rotating shaft (14) is sleeved outside the motor hub (9).

7. A rotary transformer suitable for a range extender is characterized by comprising a coupling connecting disc (1), an elastic coupling (2), a rotating shaft (14), a bearing (3), a bearing fixing disc (4), a rotary transformer stator (5) and a rotary transformer rotor (6);

the coupling connecting disc (1) is connected to a motor rotating hub (9);

the bearing (3) comprises a first bearing and a second bearing, and a bearing fixing disc (4) is connected to the first bearing and the second bearing;

the edge of the bearing fixing disc (4) is fixedly connected to the motor shell (12);

the rotary transformer rotor (6) and the rotary transformer stator (5) are located at the same position in the axial direction of the rotating shaft (14), and the rotary transformer rotor (6) rotates relative to the rotary transformer stator (5);

the rotating shaft (14) is located inside the motor rotating hub (9), or the rotating shaft (14) is of a hollow structure, and the rotating shaft (14) is sleeved outside the motor rotating hub (9).

8. A range extender comprising a resolver suitable for use in a range extender according to any one of claims 1 to 7, further comprising an engine (7), an electric machine;

the engine (7) comprises an engine crankshaft (8), and the motor comprises a motor rotating hub (9), a motor rotor (10), a motor stator (11) and a motor shell (12);

the motor rotating hub (9) is coupled to an engine crankshaft (8), the motor rotor (10) is arranged on the motor rotating hub (9), the motor stator (11) is arranged on the motor shell (12), the motor rotor (10) and the motor stator (11) are arranged oppositely, and the motor rotor (10) can rotate relative to the motor stator (11).

9. The range extender of claim 8, further comprising a speed reducer (13), wherein the speed reducer (13) is connected to the motor hub (9).

10. The range extender of claim 8, further comprising a speed reducer (13), wherein the speed reducer (13) is connected to the rotating shaft (14).