阅读说明：本技术 一种增程发电机总成系统的润滑及散热结构 (Lubricating and heat-dissipating structure of extended-range generator assembly system ) 是由 熊雨超 宋建军 陈晓宇 姚伟科 骆忠贤 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种增程发电机总成系统的润滑及散热结构,包括前壳体、后壳体、后端盖、油底壳、油泵组件、油冷器组件、定子组件和转子组件,后端盖上设有进油腔、出油腔、进油油路和出油油路,定子组件上设有定子出油口,定子进油口和定子出油口设置在定子组件靠近顶部的位置；油泵转轴为中空结构,油泵转轴联通出油腔以及电机轴的中空部分,电机轴上开设有转轴出油口；转轴出油口内设有固定块、伸缩弹簧和密封块,转轴出油口为台阶孔,固定块与转轴出油口固定,伸缩弹簧连接固定块与密封块。本发明提供了一种增程发电机总成系统的润滑及散热结构,可以利用积油对定子进行散热,提高散热效率,在发电机启动时,提供更好的润滑效果。(The invention discloses a lubricating and heat-dissipating structure of a range-extended generator assembly system, which comprises a front shell, a rear end cover, an oil pan, an oil pump assembly, an oil cooler assembly, a stator assembly and a rotor assembly, wherein the rear end cover is provided with an oil inlet cavity, an oil outlet cavity, an oil inlet oil way and an oil outlet oil way; the oil pump rotating shaft is of a hollow structure, the oil outlet cavity and the hollow part of the motor shaft are communicated with each other, and a rotating shaft oil outlet is formed in the motor shaft; the rotating shaft oil outlet is internally provided with a fixed block, an expansion spring and a sealing block, the rotating shaft oil outlet is a stepped hole, the fixed block is fixed with the rotating shaft oil outlet, and the expansion spring is connected with the fixed block and the sealing block. The invention provides a lubricating and heat-dissipating structure of a range-extended generator assembly system, which can dissipate heat of a stator by using accumulated oil, improve the heat-dissipating efficiency and provide better lubricating effect when a generator is started.)

1. A lubricating and heat-dissipating structure of a range-extended generator assembly system is characterized by comprising a front shell, a rear end cover, an oil pan, an oil pump assembly, an oil cooler assembly, a stator assembly and a rotor assembly, wherein the rear end cover is provided with an oil inlet cavity, an oil outlet cavity, an oil inlet oil path and an oil outlet oil path;

the oil pump rotating shaft is of a hollow structure, the oil outlet cavity and the hollow part of the motor shaft are communicated, and a rotating shaft oil outlet is formed in the motor shaft; the rotating shaft oil outlet is internally provided with a fixed block, an expansion spring and a sealing block, the rotating shaft oil outlet is a stepped hole, the fixed block is fixed with the rotating shaft oil outlet, the sealing block is in sliding connection with the rotating shaft oil outlet, and the expansion spring is connected with the fixed block and the sealing block.

2. The lubrication and heat dissipation structure of an extended range generator assembly system as recited in claim 1, wherein said sealing block is provided with a sealing bevel.

3. The lubrication and heat dissipation structure of an extended range generator assembly system as recited in claim 1, wherein said fixed block is threadably connected to said shaft outlet.

4. The lubrication and heat dissipation structure for a range extender assembly system as claimed in claim 1, 2 or 3, wherein the number of said shaft outlets is two, and the two shaft outlets are located on the same side of the motor shaft and aligned with the position of the bearing hole in the motor shaft direction.

5. The lubrication and heat dissipation structure for the extended range generator assembly system as recited in claim 1, 2 or 3, wherein the stator assembly comprises a stator front cover plate, a stator rear cover plate, and a stator core winding assembly, and the stator front cover plate and the stator rear cover plate are mounted on the stator core winding assembly and form a closed cavity with the stator core winding assembly.

6. The lubrication and heat dissipation structure of an extended range generator assembly system as claimed in claim 5, wherein said stator core winding assembly defines bolt mounting holes, and said rear housing defines a spigot and a shoulder for engaging said stator core winding assembly, said spigot engaging said stator core winding assembly.

Technical Field

The invention relates to the technical field of extended range new energy vehicles, in particular to a lubricating and heat-radiating structure of an extended range generator assembly system.

Background

The range-extended generator in the prior art has the problems of complex structure, high cost, low motor heat dissipation efficiency and poor lubricating effect in the starting stage of the motor. Therefore, it is desirable to design a lubrication and heat dissipation structure for an extended range generator assembly system to solve the above problems.

Chinese patent application publication No. CN103358877A, published as 2013, 10, 23 and entitled "power system of extended range electric vehicle and extended range electric vehicle thereof", discloses a power system of an extended range electric vehicle, which includes a first input shaft (162), a second input shaft (262), an output shaft (362) and a meshing component (24). The main drive motor (16) of the range-extended electric vehicle can drive a first input shaft, and an output shaft can be driven by the first input shaft and/or a second input shaft, wherein the output shaft of an engine (26) of the range-extended electric vehicle is transmitted to the second input shaft through a rotor of an auxiliary motor (28) of the range-extended electric vehicle, and the second input shaft can be transmitted to the output shaft through a meshing component. The power system does not solve the above problems.

Disclosure of Invention

The invention aims to solve the problems of complex structure, high cost, low heat dissipation efficiency of a motor and poor lubricating effect in a machine starting stage of a generator assembly in the prior art, and provides a lubricating and heat dissipation structure of an extended-range generator assembly system.

In order to achieve the purpose, the invention adopts the following technical scheme:

a lubricating and heat-dissipating structure of a range-extended generator assembly system comprises a front shell, a rear end cover, an oil pan, an oil pump assembly, an oil cooler assembly, a stator assembly and a rotor assembly, wherein the rear end cover is provided with an oil inlet cavity, an oil outlet cavity, an oil inlet oil path and an oil outlet oil path;

the oil pump rotating shaft is of a hollow structure, the oil outlet cavity and the hollow part of the motor shaft are communicated, and a rotating shaft oil outlet is formed in the motor shaft; the rotating shaft oil outlet is internally provided with a fixed block, an expansion spring and a sealing block, the rotating shaft oil outlet is a stepped hole, the fixed block is fixed with the rotating shaft oil outlet, the sealing block is in sliding connection with the rotating shaft oil outlet, and the expansion spring is connected with the fixed block and the sealing block.

Among the above-mentioned technical scheme, the oil pan storage has cooling lubricating oil, and through the effect of oil pump subassembly, the cooling lubricating oil of oil pan passes through the oil feed oil circuit and the oil circuit that produces oil on the motor rear end cover, enters into the oil cooler subassembly. The cooling lubricating oil exchanges heat with water in the oil cooler assembly, and the cooling lubricating oil after exchanging heat enters the stator assembly through the oil outlet. The cooling lubricating oil entering the stator assembly can gradually fill the closed cavity of the stator assembly, and finally falls back to the oil pan from the stator oil outlet. When the stator assembly enters a stable state, the copper wires and the iron core of the stator assembly are immersed in cooling lubricating oil, heat generated by the stator is taken away, and the heat dissipation efficiency is improved. The oil pump assembly comprises an oil pump shell, an oil pump cycloid rotor, an oil pump rotating shaft and a mounting bolt, the oil pump cycloid rotor is mounted in the oil pump shell, the oil pump rotating shaft is fixedly connected with the oil pump cycloid rotor, and the oil pump assembly is mounted on the rear end cover of the motor by means of the mounting bolt. The oil pump assembly is installed on the rear end cover of the motor through the mounting bolts, the sealing performance of the oil pump assembly is guaranteed, and the mounting bolts can provide enough pressing force to avoid oil leakage and oil pump power loss. The sealing block contacts with a step hole of the rotating shaft oil outlet, a sealing effect can be achieved, when the rotating shaft of the oil pump rotates, the sealing block moves towards the outside under the action of centrifugal force, the sealing effect of the sealing block disappears, cooling lubricating oil can be sprayed out from the rotating shaft oil outlet, and lubrication is provided for the bearing. When the oil pump pivot slowly stopped, the centrifugal force decline of sealed piece, sealed piece is inside side removal under expanding spring's effect, and sealed piece compresses tightly the step hole and plays sealed effect, remains cooling lubricating oil in the cavity of motor shaft, and when the generator started, the oil pump just started working at this moment has not yet cooled lubricating oil pump like the motor shaft, can rely on the cooling lubricating oil who remains in the motor shaft, can provide the lubrication for the bearing at the start-up stage, and lubrication when avoiding the generator to start is bad.

Preferably, the sealing block is provided with a sealing inclined surface. The sealing bevel may increase the sealing effect.

Preferably, the fixed block is in threaded connection with the rotating shaft oil outlet.

Preferably, the number of the rotating shaft oil outlets is two, and the two rotating shaft oil outlets are located on the same side of the motor shaft and aligned with the position of the bearing hole in the motor shaft direction.

Among the above-mentioned technical scheme, two pivot oil-outs are located the same one side of motor shaft to upwards align with the position of dead eye at the motor shaft, this kind of setting mode can be when the generator stop work, remain cooling lubricating oil in the cavity of motor shaft, when the generator starts, the oil pump just begins work at this moment and has not yet cooled lubricating oil pump like the motor shaft, can rely on the cooling lubricating oil who remains in the motor shaft to provide lubrication for the bearing, lubrication when avoiding the generator to start is bad.

Preferably, the stator assembly comprises a stator front cover plate, a stator rear cover plate and a stator core winding assembly, wherein the stator front cover plate and the stator rear cover plate are installed on the stator core winding assembly and form a closed cavity together with the stator core winding assembly.

Preferably, the stator core winding assembly is provided with a bolt mounting hole, the rear shell is provided with a spigot and a shoulder, the spigot and the shoulder are matched with the stator core winding assembly, and the spigot and the stator core winding assembly are matched. Stator module guarantees through one section tang cooperation with the concentricity of rotor, through the fixed restriction stator axial displacement of bolt, this kind of mounting means need not to heat motor casing, has saved equipment cost, has simplified mounting process, and is simple reliable.

The invention has the beneficial effects that: (1) the stator can be radiated by using the accumulated oil, and when the stator enters a stable state, the copper wire and the iron core of the stator assembly are immersed in the cooling lubricating oil, so that the heat generated by the stator is taken away, and the radiating efficiency is improved; (2) can remain partial cooling lubricating oil in the cavity of motor shaft, when the generator started, the oil pump just started working at this moment has not yet cooled the lubricant pump like the motor shaft, can rely on the cooling lubricating oil who remains in the motor shaft to provide the lubrication for the bearing, and it is bad to avoid the lubrication when the generator starts: (3) stator module guarantees through one section tang cooperation with the concentricity of rotor, through the fixed restriction stator axial displacement of bolt, this kind of mounting means need not to heat motor casing, has saved equipment cost, has simplified mounting process, and is simple reliable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an exploded view of the rear end cap portion of the present invention;

FIG. 4 is a schematic view of the construction of a rotor assembly according to the present invention;

FIG. 5 is a schematic view of the construction of the stator assembly of the present invention;

FIG. 6 is a cross-sectional view of a stator assembly of the present invention;

FIG. 7 is a schematic flow diagram of the engine oil of the present invention;

FIG. 8 is a schematic structural view of embodiment 2.

In the figure: the stator comprises a front shell 1, a rear shell 2, a spigot 2.1, a retaining shoulder 2.2, a rear end cover 3, an oil inlet cavity 3.1, an oil outlet cavity 3.2, an oil inlet path 3.3, an oil outlet path 3.4, an oil pan 4, an oil pump assembly 5, an oil pump rotating shaft 5.1, an oil cooler assembly 6, a stator assembly 7, a stator oil inlet 7.1, a stator oil outlet 7.2, a stator front cover plate 7.3, a stator rear cover plate 7.4, a stator iron core winding assembly 7.5, a rotor assembly 8, a motor shaft 8.1, a rotating shaft oil outlet 8.1.1, a rotating hub 8.2, an iron core pressing plate 8.3, a rotor iron core assembly 8.4, a bearing 8.5, a rotating transformer ring 8.6, a fixed block 9, a telescopic spring 10, a sealing block 11 and a sealing inclined plane 11.1.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

Example 1:

as shown in fig. 1 and 2, a lubricating and heat dissipating structure of a range-extended generator assembly system comprises a front shell 1, a rear shell 2, a rear end cover 3, an oil pan 4, an oil pump assembly 5, an oil cooler assembly 6, a stator assembly 7 and a rotor assembly 8, as shown in fig. 3, an oil inlet cavity 3.1, an oil outlet cavity 3.2, an oil inlet path 3.3 and an oil outlet path 3.4 are arranged on the rear end cover 3, the oil inlet path 3.3 is communicated with the oil inlet cavity 3.1 and the oil pan 4 at the same time, the oil outlet path 3.4 is communicated with an oil inlet of the oil cooler assembly 6 at the same time, an oil outlet of the oil cooler assembly 6 is communicated with a stator oil inlet 7.1 on the stator assembly 7, the oil pump assembly 5 is arranged on the rear end cover 3, an oil pump rotating shaft 5.1 of the oil pump assembly 5 is connected with a motor shaft 8.1, a stator oil outlet 7.2 is arranged on the stator assembly 7, and the stator oil inlet 7.1 and the stator oil outlet 7.2 are arranged at positions close to the top of the stator assembly 7. Among the above-mentioned technical scheme, oil pan 4 storage has cooling lubricating oil, and through oil pump assembly 5's effect, oil pan 4's cooling lubricating oil enters into oil cooler subassembly 6 through oil feed oil circuit 3.3 and the oil circuit 3.4 that produces oil on the motor rear end cover 3. The cooling lubricating oil exchanges heat with water in the oil cooler assembly 6, and the cooling lubricating oil after heat exchange enters the stator assembly 7 through the oil outlet. The cooling lubricant entering the stator assembly 7 will gradually fill the closed cavity of the stator assembly 7 and finally fall back from the stator oil outlet 7.2 into the oil sump 4. When the stator assembly enters a stable state, the copper wires and the iron core of the stator assembly 7 are immersed in cooling lubricating oil, heat generated by the stator is taken away, and the heat dissipation efficiency is improved. Oil pump subassembly 5 includes the oil pump case, oil pump cycloid rotor, oil pump pivot 5.1 and construction bolt, and oil pump cycloid rotor installs in the oil pump case, oil pump pivot 5.1 and oil pump cycloid rotor fixed connection, and oil pump subassembly 5 relies on construction bolt to install on motor rear end housing 3. The oil pump assembly 5 is installed on the rear end cover 3 of the motor through the mounting bolts, the sealing performance of the oil pump assembly 5 is guaranteed, and the mounting bolts can provide enough pressing force to avoid oil leakage and oil pump power loss.

As shown in fig. 2, fig. 3, fig. 4 and fig. 7, the oil pump rotating shaft 5.1 is a hollow structure, the oil pump rotating shaft 5.1 is communicated with the oil outlet cavity 3.2 and the hollow part of the motor shaft 8.1, and two rotating shaft oil outlets 8.1.1 are formed in the motor shaft 8.1. The two rotating shaft oil outlets 8.1.1 are positioned on the same side of the motor shaft 8.1 and are aligned with the position of the bearing 8.5 hole in the upward direction of the motor shaft 8.1. Two pivot oil-out 8.1.1 lie in the same side of motor shaft 8.1 to upwards align with the position in bearing 8.5 hole at motor shaft 8.1, this kind of setting mode can be when the generator stop work, remain cooling lubricating oil in the cavity of motor shaft 8.1, when the generator starts, the oil pump just begins work at this moment and has not yet cooled lubricating oil pump such as motor shaft 8.1, can rely on the cooling lubricating oil who remains in motor shaft 8.1 to provide the lubrication for bearing 8.5, lubrication badly when avoiding the generator to start.

As shown in fig. 4, rotor subassembly 8 includes motor shaft 8.1, hub 8.2, iron core clamp plate 8.3, rotor iron core subassembly 8.4, bearing 8.5 and resolver ring 8.6, resolver ring 8.6's hole is the square hole, resolver ring 8.6's hole and oil pump pivot 5.1's square key cooperation, resolver ring 8.6 and motor shaft 8.1 interference fit, iron core clamp plate 8.3 passes through bolt fixed connection with hub 8.2, be provided with the key on the rotor iron core subassembly 8.4, be provided with slottedly on the hub 8.2, rotor iron core subassembly 8.4 is connected through keyway fit with hub 8.2, iron core clamp plate 8.3 is through bolted connection at hub 8.2 and compress tightly rotor iron core subassembly 8.4. The core press plate 8.3 can be used as a weight-removing part for correcting the dynamic balance of the rotor. Through setting up mechanical oil pump reduce cost, improve the radiating efficiency of motor, avoid the risk of magnet steel demagnetization. In addition, the outer diameter of the rotating shaft does not need to be large, the structure of the motor shaft 8.1 is simplified, and in addition, the rotating hub 8.2 can be manufactured by a die-casting process, so that the weight of the generator assembly is reduced.

As shown in fig. 5, the stator assembly 7 includes a stator front cover plate 7.3, a stator back cover plate 7.4, and a stator core winding assembly 7.5, and the stator front cover plate 7.3 and the stator back cover plate 7.4 are mounted on the stator core winding assembly 7.5 and form a closed cavity with the stator core winding assembly 7.5. As shown in fig. 6, the stator core winding assembly 7.5 is provided with a bolt mounting hole, the rear housing 2 is provided with a spigot 2.1 and a shoulder 2.2, which are matched with the stator core winding assembly 7.5, and the spigot 2.1 is matched with the stator core winding assembly 7.5. Stator module 7 guarantees through one section tang 2.1 cooperation with the concentricity of rotor, through the fixed restriction stator axial displacement of bolt, and this kind of mounting means need not to heat motor casing, has saved equipment cost, has simplified mounting process, and is simple reliable.

When the generator assembly works in a stable state, the rotor magnetic steel is submerged at the lubricating oil level position in the oil bottom case 4, the three-phase line assembly is provided with the wiring seat, when the generator assembly works in the stable state, the lubricating oil level in the oil bottom case 4 is in contact with the wiring seat, the wiring seat is set to be in contact with oil, the heat of the three-phase line assembly can be effectively taken away, and the heat dissipation efficiency is improved.

Example 2:

as shown in fig. 8, on the basis of embodiment 1, a fixed block 9, a telescopic spring 10 and a sealing block 11 are arranged in the rotating shaft oil outlet 8.1.1, the rotating shaft oil outlet 8.1.1 is a stepped hole, the fixed block 9 is fixed with the rotating shaft oil outlet 8.1.1, the sealing block 11 is slidably connected with the rotating shaft oil outlet 8.1.1, and the telescopic spring 10 connects the fixed block 9 and the sealing block 11. And a sealing inclined plane 11.1 is arranged on the sealing block 11. And the fixed block 9 is in threaded connection with the rotating shaft oil outlet 8.1.1.

Among the above-mentioned technical scheme, the sealing block 11 contacts with the step hole of pivot oil-out 8.1.1, can play the sealing action, and when oil pump pivot 5.1 was rotatory, sealing block 11 moved to the outside under the effect of centrifugal force, and the sealing effect of sealing block 11 disappears, and cooling lubricating oil can be followed pivot oil-out 8.1.1 and spouted, provides the lubrication for bearing 8.5. When oil pump pivot 5.1 slowly stops, the centrifugal force of seal block 11 descends, seal block 11 moves to the inboard under expanding spring 10's effect, seal block 11 compresses tightly the step hole and plays the sealing action, remain cooling lubricating oil in motor shaft 8.1's cavity, when the generator starts, the oil pump just begins work at this moment and has not yet cooled lubricating oil pump like motor shaft 8.1, can rely on the cooling lubricating oil who remains in motor shaft 8.1, can provide the lubrication for bearing 8.5 at the start-up stage, lubrication badness when avoiding the generator to start.

The invention has the beneficial effects that: (1) the stator can be radiated by using the accumulated oil, and when the stator enters a stable state, the copper wire and the iron core of the stator assembly 7 are immersed in the cooling lubricating oil, so that heat generated by the stator is taken away, and the radiating efficiency is improved; (2) can remain partial cooling lubricating oil in the cavity of motor shaft 8.1, when the generator starts, the oil pump just begins work at this moment and has not yet cooled down the lubricating oil pump like motor shaft 8.1, can rely on the cooling lubricating oil who remains in motor shaft 8.1 to provide the lubrication for bearing 8.5, lubrication when avoiding the generator to start is bad: (3) stator module 7 guarantees through one section tang 2.1 cooperation with the concentricity of rotor, through the fixed restriction stator axial displacement of bolt, and this kind of mounting means need not to heat motor casing, has saved equipment cost, has simplified mounting process, and is simple reliable.