CN215498571U - Motor with junction box integrated double-motor structure - Google Patents

Abstract

The utility model provides a motor with a junction box integrated double-motor structure, wherein the junction box and a motor shell are integrated into a whole, a first motor rotor assembly and an engine flywheel are integrated into a whole, the engine flywheel and a second motor rotor assembly are connected by bolts, the first motor rotor assembly is sleeved outside the second motor rotor assembly, and a supporting seat is arranged on the outer wall of the motor shell. The wiring seat is arranged in the wiring box, so that the possibility of interference with external parts during arrangement is reduced, the integral cantilever part of the range extender is reduced, and the stress of each suspension is reduced. The flywheel of the engine is integrated on the rotor support, so that the arrangement space is saved, the arrangement is convenient, and meanwhile, the rotational inertia increased by the flywheel enables the motor to drive the engine to start more easily.

Description

Motor with junction box integrated double-motor structure

Technical Field

The utility model relates to the technical field of vehicles, in particular to a motor with a junction box integrated double-motor structure.

Background

The extended range electric vehicle is characterized in that the whole vehicle can achieve all power performances in a pure electric mode, and when the vehicle-mounted rechargeable battery cannot meet the driving range requirement, the vehicle-mounted auxiliary power generation device is turned on to provide electric energy for the power system so as to prolong the driving range. The range extending type electric automobile has a range extender which generally comprises an engine and a generator, charges a power battery of the automobile and can directly drive a motor to run.

The range extender mainly comprises an engine and a generator, the bottleneck problem restricting the wide application of the range extender is the lack of the generator with high efficiency, high reliability and stable output voltage, the connection mode of the generator determines the conversion efficiency of energy, the structure and the weight of the range extender are influenced, and the structural arrangement and the performance of the whole vehicle are further influenced.

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 is generally composed of an engine + a generator. For example, chinese patent CN108995542A discloses a range extender for an electric vehicle with an integrated motor. This motor integrated form is range extender for electric automobile includes: an engine body; an engine output shaft; a connecting plate; and a generator comprising: the motor comprises a rotary transformer, a motor rotor assembly, a motor stator core, a motor shell and a motor rear cover, wherein the motor shell is fixed on a connecting plate, and the motor stator core is placed into the front end of the motor shell and is sleeved on the motor shell in a hot manner; the electrical machine rotor assembly is coaxially disposed within the electrical machine stator core and has an electrical machine rotor support that extends into the connecting plate and is directly connected to the engine output shaft, the rotary transformer comprising: a resolver stator and a resolver rotor.

The structure still has some defects, the rotor bracket is arranged on the flywheel shell, the structure is complex, the whole length of the range extender is longer, the junction box of the generator is separated from the shell, the installation steps of the junction box are complex, and the junction box is easy to interfere with external parts; the rotational inertia of the motor rotor support is poor, and the motor runs unstably.

SUMMERY OF THE UTILITY MODEL

The utility model provides a junction box integrated motor with a double-motor structure, which comprises a motor rear end cover, a motor shell, a motor stator iron core, a first motor rotor assembly, a bolt, a second motor rotor assembly and a junction box, wherein the motor stator iron core, the first motor rotor assembly and the second motor rotor assembly are all arranged inside the motor shell, the junction box and the motor shell are integrated into a whole, the first motor rotor assembly and an engine flywheel are integrated into a whole, the engine flywheel and the second motor rotor assembly are connected through the bolt, the first motor rotor assembly is sleeved outside the second motor rotor assembly, and a supporting seat is arranged on the outer wall of the motor shell.

The motor shell structure integrating the junction box and the shell is adopted, and the junction box is arranged in the junction box, so that the mounting steps of the junction box are reduced, the length of the junction box part of the motor is reduced, and the possibility of interference with external parts during arrangement is reduced; meanwhile, the motor shell is provided with the supporting seat, namely the supporting leg mounting plane, the motor can be fixed through the mounting supporting legs, the integral cantilever part of the range extender is reduced, and the stress of each suspension is reduced. First motor rotor subassembly adopts the structural design of support and engine flywheel integral type, with the engine flywheel integration on rotor support, forms integral supporting structure, has saved the structure of connecting between, has shortened the holistic length of range extender, has saved and has arranged the space, conveniently arranges, and the inertia that the flywheel increases simultaneously lets the motor can more easily drive the engine start.

Because the double-motor structure is used, double-circuit power generation or one-circuit power generation and one-circuit output can be realized, in operation, an engine crankshaft drives a motor rotor to rotate, a rotating magnetic field is generated, induced current is generated in a first motor stator core and a second motor stator core, the motor stator core and a first motor rotor assembly are equivalent to a motor at the moment, the motor stator core and a second motor rotor assembly are equivalent to a second motor, a stator outgoing line is led out from the rear end of the motor to a junction box, the motor is led out through the junction box, the power generation function is realized, and the functions are diversified.

Preferably, the utility model further comprises a rear bearing, a support shaft is arranged on the rear end cover of the motor, and the second motor rotor assembly is connected with the support shaft through the rear bearing. The air gap between the motor rotor assembly and the motor stator iron core is ensured, and the attraction between the rotor and the stator caused by the overweight of the rotor is prevented.

Preferably, the junction box is arranged in a gap between the rear side of the motor shell and the rear end cover of the motor, the structure is more compact, and the possibility of interference between the wire holder and external parts during arrangement is reduced.

Drawings

Fig. 1 is a schematic cross-sectional view of a motor having a junction box integrated dual motor structure according to the present invention.

Fig. 2 is an external structure view of a motor having a junction box integrated dual motor structure according to the present invention.

Fig. 3 is a structural schematic diagram of the overall structure of the first motor rotor assembly and the engine flywheel according to the present invention.

In the figure: 1. the motor comprises a motor rear end cover, 101 support shafts, 2 motor housings, 3 motor stator iron cores, 4 first motor rotor assemblies, 5 bolts, 6 second motor rotor assemblies, 7 rear bearings, 8 junction boxes, 9 engine flywheels and 10 support seats.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein the exemplary embodiments and descriptions are provided for illustration of the utility model and not for limitation of the utility model.

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

Example 1:

as shown in fig. 1 and 2, a motor with a junction box integrated dual-motor structure includes a motor rear end cover 1, a motor housing 2, a motor stator core 3, a first motor rotor assembly 4, a bolt 5, a second motor rotor assembly 6 and a junction box 8, wherein the motor stator core 3, the first motor rotor assembly 4 and the second motor rotor assembly 6 are all installed inside the motor housing 2, the junction box 8 and the motor housing 2 are integrated into a whole, the first motor rotor assembly 4 and an engine flywheel 9 are integrated into a whole, the engine flywheel 9 and the second motor rotor assembly 6 are connected by the bolt 5, the first motor rotor assembly 4 is sleeved outside the second motor rotor assembly 6, and a support seat 10 is arranged on an outer wall of the motor housing 2. The motor housing 2 is externally connected to the engine body.

The working principle of the embodiment is as follows:

the working principle of the utility model is as follows: in this embodiment, the motor is a generator, and the power transmission path: the engine crankshaft outputs power, the crankshaft is connected with the motor rotor to rotate, the generator generates power, the double-motor structure can output two paths of current, one path of current is used for driving a vehicle, electric energy is output to the generator controller through a cable, finally, the electric energy is output through the generator controller to be used by the whole vehicle, and the other path of current is used for starting the engine.

Example 2:

as shown in fig. 1, a junction box integrated motor with a dual-motor structure comprises a motor rear end cover 1, a motor housing 2, a motor stator core 3, a first motor rotor assembly 4, a bolt 5, a second motor rotor assembly 6 and a junction box 8, wherein the motor stator core 3, the first motor rotor assembly 4 and the second motor rotor assembly 6 are all installed inside the motor housing 2, the junction box 8 and the motor housing 2 are integrated into a whole,

as shown in fig. 3, the first motor rotor assembly 4 and the engine flywheel 9 are integrated, the engine flywheel 9 and the second motor rotor assembly 6 are connected by bolts 5, the first motor rotor assembly 4 is sleeved outside the second motor rotor assembly 6,

as shown in fig. 2, a support seat 10 is provided on an outer wall of the motor housing 2.

In the embodiment, the motor shell 2 structure integrating the junction box 8 and the shell is adopted, and the junction box is arranged in the junction box 8, so that the installation steps of the junction box 8 are reduced, the length of the junction box 8 part of the motor is reduced, and the possibility of interference with external parts during arrangement is reduced; meanwhile, the motor shell 2 is provided with the supporting seat 10, namely a supporting leg mounting plane, the motor can be fixed through mounting the supporting legs, the integral cantilever part of the range extender is reduced, and the stress of each suspension is reduced. First motor rotor subassembly 4 adopts the structural design of support and engine flywheel 9 integral type, integrates engine flywheel 9 on rotor support, has saved the structure of connecting between, has shortened the holistic length of range extender, has saved and has arranged the space, conveniently arranges, and the inertia that the flywheel increases simultaneously lets the motor can more easily drive the engine start.

Because the double-motor structure is used, double-circuit power generation or one-circuit power generation and one-circuit output can be realized, in operation, an engine crankshaft drives a motor rotor to rotate, a rotating magnetic field is generated, induced current is generated in a first motor stator core 3 and a second motor stator core 3, the motor stator core 3 and a first motor rotor assembly 4 are equivalent to a motor at the moment, the motor stator core 3 and a second motor rotor assembly 6 are equivalent to a second motor, a stator outgoing line is led out from the rear end of the motor to a junction box 8, the motor is led out through the junction box 8, the power generation function is realized, and the function is diversified.

This embodiment still includes rear bearing 7, be provided with support shaft 101 on the motor rear end cover, second motor rotor subassembly 6 passes through rear bearing 7 with support shaft 101 is connected. The air gap between the motor rotor assembly and the motor stator iron core 3 is ensured, and the attraction between the rotor and the stator caused by the overweight of the rotor is prevented.

In the embodiment, the junction box 8 is arranged in the gap between the rear side of the motor shell 2 and the rear end cover 1 of the motor, the structure is more compact, and the possibility of interference between the wire holder and external parts during arrangement is reduced.

Claims (3)

1. The utility model provides a motor of terminal box integrated bi-motor structure, includes motor rear end housing (1), motor casing (2), motor stator core (3), first motor rotor subassembly (4), bolt (5), second motor rotor subassembly (6) and terminal box (8), motor stator core (3), first motor rotor subassembly (4) and second motor rotor subassembly (6) are all installed inside motor casing (2), its characterized in that: the motor comprises a junction box (8) and a motor shell (2) which are integrated into a whole, a first motor rotor assembly (4) and an engine flywheel (9) are integrated into a whole, the engine flywheel (9) and a second motor rotor assembly (6) are connected through bolts (5), the first motor rotor assembly (4) is sleeved outside the second motor rotor assembly (6), and a supporting seat (10) is arranged on the outer wall of the motor shell (2).

2. The motor of claim 1, wherein the terminal block is integrated into the dual motor structure, and further comprising: the motor rotor assembly is characterized by further comprising a rear bearing (7), a supporting shaft (101) is arranged on the rear end cover of the motor, and the second motor rotor assembly (6) is connected with the supporting shaft (101) through the rear bearing (7).

3. The motor of a junction box integrated dual motor structure as set forth in claim 1 or 2, wherein: the terminal box (8) is arranged in a gap between the rear side of the motor housing (2) and the motor rear end cover (1).

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