CN209642500U - The cooling system of rotating electric machine and the rotating electric machine for having this cooling system - Google Patents

Abstract

The utility model provides a kind of cooling system of rotating electric machine and has the rotating electric machine of this cooling system, and the cooling system prevents the pollution of lubricating oil and realizing prevents from being grounded.The cooling system (7) of the rotating electric machine (3) includes: refrigerant path (32), is flowed for carrying out cooling refrigerant to rotating electric machine (3)；And refrigerant is with filter (70), in the flow path of the refrigerant path (32), the impurity of the refrigerant is removed, the refrigerant is surface side of the setting in the shell (41) of the built-in rotating electric machine (3) with filter (70).

Description

The cooling system of rotating electric machine and the rotating electric machine for having this cooling system

Technical field

The utility model relates to a kind of cooling system of rotating electric machine and has the rotating electric machine of this cooling system.

Background technique

Hybrid vehicle is the engine (internal combustion engine) and traveling motor carried as traveling power source, by making With in these the two or one realize efficient traveling.

In the hybrid vehicle with generator and motor, by making the automatic of the gear lubrication for doubling as speed changer The refrigerants such as gear box oil (Automatic Transmission Fluid, ATF) drop to the stator of generator and motor (stator) lateral coil, to carry out the cooling of stator lateral coil.

In addition, for the rotating electric machine for the power source for being used as hybrid vehicle or electric car, it is desirable that small-sized and high defeated Out.For example, proposing have in patent document 1: in the slot of stator core (stator core), by first group of conducting wire and second group The slot inside conductor portion of the conducting wire sequence arranged in parallel high according to current potential.It, can will be in slot according to technology documented by patent document 1 The potential difference of wire portion inhibits lower, therefore the thickness of insulating coating needed for capable of making the insulation in slot inside conductor portion is thin.Cause This, can be improved the copper factor (hereinafter referred to as copper factor) of the conducting wire in the slot of stator core, thus the miniaturization of rotating electric machine Or high output is possibly realized.

[existing technical literature]

[patent document]

Patent document 1: Japanese Patent Laid-Open 2010-178458 bulletin

Utility model content

[utility model problem to be solved]

But naked epithelium conductor (bare conductor) is had with insulating coating further decreasing leather film thickness to consideration When the stator for the winding construction that conductor (existing conductor) is alternately constituted side by side is cooled down, it is possible to be mixed in the refrigerants such as ATF Enter fine conductor impurity (contamination: pollution, hereinafter referred to as impurity).If impurity is piled up in bare conductor and leads with existing Between body, then there is the worry for causing ground connection.

The utility model is completed in view of such background, its purpose is to provide a kind of pollution for preventing lubricating oil Realize the cooling system for preventing the rotating electric machine of ground connection and the rotating electric machine for having this cooling system.

[technical means to solve problem]

In order to solve described problem, the cooling system of the rotating electric machine of technical solution 1 includes: refrigerant path, for rotation Rotating motor carries out cooling refrigerant flowing；And refrigerant filter removes institute in the flow path of the refrigerant path The impurity of refrigerant is stated, the refrigerant is the surface that the shell (case) of the built-in rotating electric machine is arranged in filter Side.

The cooling system of the rotating electric machine according to technical solution 1 of technical solution 2, the refrigerant filter with Filter plate with heat dissipation extension connects, and the surface side of the shell is arranged in.

The cooling system of the rotating electric machine according to technical solution 2 of technical solution 3, the filter plate have in peripheral part The heat dissipation extension, the refrigerant are to connect with the center side of the filter plate and configure with filter.

The cooling system of the rotating electric machine according to technical solution 1 of technical solution 4, the cooling system of the rotating electric machine System is set in vehicle, and at least described refrigerant is with filter deployment can area with the traveling wind of the vehicle to cool down Domain.

The rotating electric machine of technical solution 5, comprising: refrigerant path is flowed for carrying out cooling refrigerant to stator；And Refrigerant filter removes the impurity of the refrigerant, the refrigerant filtering in the flow path of the refrigerant path Device is the surface side that the shell of the built-in stator is arranged in.

[effect of utility model]

According to the utility model, it is capable of providing a kind of pollution for preventing lubricating oil and realizes the rotating electric machine for preventing ground connection Cooling system and the rotating electric machine for having this cooling system.

Detailed description of the invention

Fig. 1 is the saturating of the hybrid vehicle of the cooling system of the rotating electric machine equipped with the embodiments of the present invention Parallax stereogram.

Fig. 2 is the diagrammatic perspective of the cooling system of the rotating electric machine after the oil filter installation of the embodiments of the present invention Figure.

Fig. 3 is the diagrammatic perspective of the cooling system of the rotating electric machine before the oil filter installation of the embodiments of the present invention Figure.

Fig. 4 is the block diagram for indicating the summary of the cooling system of rotating electric machine of present embodiment.

Fig. 5 (a) and Fig. 5 (b) be indicate the rotating electric machine of present embodiment cooling system towards shell machined surface pacify The figure of filter plate is filled, Fig. 5 (a) is the figure for indicating to be coated with shell machined surface heat dissipation rouge (grease), and Fig. 5 (b) is indicated towards shell The figure of body machined surface setting filter plate.

Fig. 6 (a) to Fig. 6 (c) is the knot for indicating the filter plate and oil filter of the cooling system of rotating electric machine of present embodiment The figure of structure, Fig. 6 (a) are its perspective views, and Fig. 6 (b) is its sectional view, and Fig. 6 (c) is its major part sectional view.

The explanation of symbol

1: hybrid vehicle

3: rotating electric machine

7: cooling system

10: motor stator

20: generator unit stator

30: mechanical oil pump

31:ATF cooler

32: cooling circuit (cooling line)

33: front bumper

40: casing (shell)

41: the 1 side covers

41a: shell machined surface

42: the 2 side covers

45: heat dissipation rouge

50,51: fuel feed pump (cooling line)

60: filter plate

61: circular slab

62: annular flange portion (heat dissipation extension)

63: cooling fin (heat dissipation extension)

70: oil filter

71: cylindrical portion

72: cover

Specific embodiment

Next, cooling system for the rotating electric machine of the embodiments of the present invention and having this cooling system Rotating electric machine elaborate on one side on one side suitably referring to attached drawing.In addition, being marked in each attached drawing for common part Identical symbol simultaneously omits repeated explanation.

Fig. 1 is the saturating of the hybrid vehicle of the cooling system of the rotating electric machine equipped with the embodiments of the present invention Parallax stereogram.Fig. 2 is the approximate stereogram of the cooling system of the rotating electric machine after oil filter installation, and Fig. 3 is before oil filter is installed Rotating electric machine cooling system approximate stereogram.

3 (motor of engine 2 and rotating electric machine in hybrid vehicle 1 shown in Fig. 1, as traveling power source And generator) it is to together constitute with power unit with the driving force switching device 4 or automatic transmission 5 for being built-in with differential gear (power unit) 6, and horizontal be equipped between front-wheel 8.Hybrid vehicle 1 is cold with carrying out to rotating electric machine 3 But cooling system 7.Hybrid vehicle 1 can be cold with the rotating electric machine 3 as cooling object and for carrying out to it But the vehicle of cooling system 7 can also be the vehicle other than hybrid vehicle.

Fig. 4 is the block diagram for indicating the summary of cooling system 7.Cooling system 7 is by ATF (lubricating oil: refrigerant) come to horse It is cooled down up to the stator core 11 and coil 12 of stator 10, with the stator core 21 of generator unit stator 20 and coil 22.Cooling system 7 Rotating electric machine 3 can also be adjacent to and configured, to the transmission device (not shown) (transmission) that can link with rotating electric machine 3 Part (such as gear, bearing) cooled down.

As shown in figure 4, cooling system 7 has ATF cooler (radiator (radiator)) 31, cooling circuit 32 (cooling Pipeline, refrigerant path) and casing (housing) 40 (shell).Cooling circuit 32 includes fuel feed pump 50,51 (aftermentioned).In addition, The symbol of resistance in Fig. 4 indicates thermal resistance.

Cooling system 7 has the cylinder (cartridge) of impurity removal in the flow path of cooling circuit 32 (cooling line) Formula oil filter 70 (aftermentioned).In present embodiment, oil filter 70 is the fuel feed pump 50 that the ejection side of ATF cooler 31 is arranged in In (cooling line, refrigerant path).As long as in the flow path of cooling circuit 32, then where in office is arranged all in oil filter 70 It can.

Mechanical oil pump (mechanical oil pump) 30 is to make ATF circulation person, is carried out by the rotation of engine The mechanical pump of output.It can also be other pumps (such as electrodynamic pump) as long as mechanical oil pump 30 can be such that ATF recycles.

The heat dissipation of the progress of ATF cooler 31 ATF.As shown in described Fig. 1, ATF cooler 31 is located at hybrid vehicle 1 Front bumper (front bumper) 33 a part.As a result, hybrid vehicle 1 when driving, come from heat sink side The traveling wind (cooling wind) in portion blows to ATF cooler 31, and ATF is cooled down as a result,.As long as can be cooled down to ATF, ATF cooler 31 can also be configured in other positions.

As shown in figure 4, cooling circuit 32 recycles ATF according to path shown in arrow C.Cooling circuit 32 includes multiple Space etc. in pipeline (pipe) (not shown) or casing 40.ATF is set to drop to the stator side of rotating electric machine 3 by each pipeline Coil 12,22, thus carry out the cooling of coil 12,22.

In addition, as Fig. 4 oil filter 70 (refrigerant filter) in dotted line shown in, in 32 (cooling tube of cooling circuit Line) flow path in be provided with oil filter 70, to remove the impurity of ATF.

40 > of < casing

Casing 40 has the function of accommodating rotating electric machine 3 (motor and generator) to protect rotating electric machine 3, and has storage Deposit the function as coolant liquid case (such as food tray (oil pan)) that ATF after cooling has been carried out to rotating electric machine 3.

As shown in Figures 2 and 3, casing 40 has as the 1st side cover 41 of anti-load-side case cover and as load-side shell 2nd side cover 42 of body cover.

It in the side of the 1st side cover 41, is connected with fuel feed pump 50 (cooling line, refrigerant path), the fuel feed pump 50 connects It is connected to oil filter 70, and is connected to one end of ATF cooler 31 via oil filter 70.The other end of ATF cooler 31 connects Oil exit pipe 51 (cooling line) in 42 lower section of the 2nd side cover, the ATF of the hydraulic circuit (not shown) of automatic transmission 5 is supplied To the inside of rotating electric machine 3 (motor and generator).

As described above, being formed with the oil groove for the ATF that storage is supplied from fuel feed pump 50 in the lower part of the inner space of casing 40 (not shown).Moreover, the ATF in oil groove is back to the hydraulic circuit of automatic transmission 5 via oil exit pipe 51.

< shell machined surface 41a >

The end of 1st side cover 41 formation casing 40.It is flat shell machined surface that 1st side cover 41, which is cut and is processed into end, 41a.Shell machined surface 41a is the mounting portion of filter plate 60 (aftermentioned).

Shell machined surface 41a is to cooperate the disc-shape of filter plate 60 and be formed as round.Shell machined surface 41a and electric rotating The axis direction of the axis (shaft) of machine 3 is orthogonal, and center is consistent with the axis direction of the axis of rotating electric machine 3.

By the way that the end of the 1st side cover 41 is set as flat shell machined surface 41a, so as to make the back side of filter plate 60 with The mode of contiguity is set to shell machined surface 41a.Since the shell machined surface 41a of the 1st side cover 41 and the back side of filter plate 60 are with big Range forms face contact, therefore the heat dissipation of casing 40 can be made to 60 side of filter plate.As described later, by being processed in the shell Coating heat dissipation rouge 45 (aftermentioned), can reach higher thermal diffusivity on the 41a of face.

In addition, since filter plate 60 is arranged in a manner of the shell machined surface 41a for being close contact in the 1st side cover 41, it can Reduce the vibration dispersion of casing 40 by vibration to 60 side of filter plate.The center of shell machined surface 41a is the axis of the axis of rotating electric machine 3 Direction is the principal vibration position (vibration section of shell) of casing 40.Since filter plate 60 is arranged at the vibration position, lead to The weight for increasing filter plate 60 is crossed, can reduce the vibration of system entirety.The decline of vibration has the effect of mitigating hull vibration sound.

60 > of < filter plate

Fig. 5 (a) and Fig. 5 (b) is the figure for indicating to install filter plate 60 towards on shell machined surface 41a.

As shown in Fig. 5 (a), on shell machined surface 41a, coating heat dissipation rouge 45, and as shown in Fig. 5 (b), filter plate 60 via Heat dissipation rouge 45 and be set to shell machined surface 41a.As described above, center (the axis of the axis of rotating electric machine 3 of shell machined surface 41a Center) it is consistent with the discoid center of filter plate 60.Secure component can be used towards the setting on shell machined surface 41a in filter plate 60 Etc. any parts.

Fig. 6 (a) to Fig. 6 (c) is the figure for indicating the structure of filter plate 60 and oil filter 70, and Fig. 6 (a) is its perspective view, Fig. 6 It (b) is its sectional view, Fig. 6 (c) is its major part sectional view.

Filter plate 60 is the mounting plate for fixing oil filter 70, such as includes Al or Al alloy.By the way that filter plate 60 is set as Al system increases acquisition vibration decline so as to obtain high-cooling property with by the weight of appropriateness.

In addition, filter plate 60 also includes the function by the heat dissipation of casing 40 to 60 side of filter plate；And it is set to the 1st side cover 41 shell machined surface 41a and increase the weight at vibration position to reduce the function of vibration.

As shown in Fig. 6 (a) to Fig. 6 (c), filter plate 60 includes: circular slab 61, for fixing oil filter 70；Annular flange portion 62 (heat dissipation extensions), erect, and then bend towards peripheral direction from the axis direction of circumference towards the axis of rotating electric machine 3 of circular slab 61 Extend at L font；And cooling fin (fin) 63 (heat dissipation extension), set on the peripheral side in annular flange portion 62.

Circular slab 61 is formed with annular flange portion 62 in the periphery of surface side, and is fixed with oil filter 70 in central portion The bottom (not shown) of cylindrical portion 71.Oil filter 70 is configured by the central portion in circular slab 61, to be formed in peripheral side In the case where annular flange portion 62, it is able to suppress the height of oil filter 70.In addition, the fixation by any mode all can, example As can also the bottom of cylindrical portion 71 to oil filter 70 carry out spiral shell and fix.

The back side of circular slab 61 is arranged at the shell machined surface 41a of the 1st side cover 41.

Regulation height is erect from the axis direction of circumference towards the axis of rotating electric machine 3 of circular slab 61 by using annular flange portion 62 The structure of degree, so that it is guaranteed that the space of setting multi-disc (being three pieces in present embodiment) cooling fin 63.

Cooling fin 63 is to be cooled down by traveling wind (cooling wind) to filter plate 60.It is cold as shown in the arrow of Fig. 6 (c) But fin 63 relative to traveling wind (cooling wind) flowing and be set to reach the angle of Maximum Contact area.Traveling wind has from scattered The traveling wind of hot device side and the traveling wind flowed into from the enging cabin lower part (engine room).

70 > of < oil filter

As shown in Figures 1 to 4, oil filter 70 is arranged in fuel feed pump 50 (cooling line, refrigerant path), is passed through Filter is adsorbed to remove the impurity in ATF flow path.Oil filter 70 includes: cylindrical portion 71, receiving cartridge (cartridge) formula oil filter (not shown)；And cover 72, it is screwed into and is mounted on 71 top of cylindrical portion, for replacing cartridge type oil filter.By opening cover 72, Cartridge type oil filter can be replaced.The bottom of oil filter 70 is fixed (such as fixing by secure component) in the circle of filter plate 60 The central portion on 61 surface of plate.

In addition, as shown in Figure 1 to Figure 3, in the side surface part of cylindrical portion 71, being equipped with fuel feed pump 50.From one of fuel feeding Pipe 50 flow into oil filter 70 in ATF (lubricating oil, refrigerant) through cartridge type oil filter remove impurity, the ATF that impurity is removed from Another fuel feed pump 50 sprays.

As described above, the cooling system 7 of the rotating electric machine 3 of present embodiment includes: cooling circuit 32 and fuel feeding Pipe 50,51 (cooling line, refrigerant path), for rotating electric machine 3 (motor and generator) carry out cooling ATF (lubricating oil, Refrigerant) flowing；And oil filter 70, the impurity of ATF (refrigerant) is removed in the flow path of cooling circuit 32, oil filter 70 is The surface side of 1st side cover 41 of the casing 40 (shell) of built-in rotating electric machine 3 is set.

By the structure, through the ATF (refrigerant) after ATF cooler 31 after primary by oil filter 70, flow direction Each lubrication portion or cooling end in casing 40.The impurity level in the flow path of cooling line can be cut down, in order to avoid cause to be grounded.Especially Its, to by naked epithelium conductor (bare conductor) and insulating coating have conductor (existing conductor) be alternately arranged the stator of composition into When row is cooling, the impurity in refrigerant can be prevented to be piled up between bare conductor and existing conductor and cause the phenomenon that being grounded in not So.Moreover, because the damage (damage) to winding mitigates, therefore it can also apply to thin overlay film coil.

Oil filter 70 is to connect with the filter plate 60 with annular flange portion 62 and cooling fin 63 (heat dissipation extension), and be arranged In the shell machined surface 41a of the 1st side cover 41 of casing 40.Fin 63 is cooled down to be set to reach maximum relative to the flowing of traveling wind The angle of contact area.

By the structure, traveling wind (cooling wind) by traveling wind from radiator side section with from enging cabin lower part The traveling wind of inflow cools down filter plate 70.The 1st side cover 41 is arranged in filter plate 60 due to improving refrigerating function Shell machined surface 41a, therefore can be by the heat dissipation of casing 40 to 60 side of filter plate.Thereby, it is possible to realize ATF (lubricating oil, refrigeration Agent) temperature reduce, so as to prevent the heat deterioration of ATF.

In addition, since filter plate 60 is arranged in a manner of the shell machined surface 41a for being close contact in the 1st side cover 41, it can Reduce the vibration dispersion of casing 40 by vibration to 60 side of filter plate, so as to reduce hull vibration sound.

In addition, in present embodiment, since filter plate 60 is set to shell machined surface 41a via heat dissipation rouge 45, energy Enough reach higher thermal diffusivity.

In addition, since oil filter 70 is mutually to be grounded configuration with the center side of filter plate 60, can press down in present embodiment The height of oil filter 70 processed, and annular flange portion 62 and cooling fin 63 (heat dissipation extension) can be formed in peripheral side.

In addition, the cooling system 7 of rotating electric machine 3 is arranged at hybrid vehicle 1, and at least filters in present embodiment Oily device 70 be configured at can region with the traveling wind of hybrid vehicle 1 to cool down, therefore can be good come efficiency by traveling wind The filter plate 60 for being equipped with oil filter 70 is cooled down well.

Furthermore the utility model is not limited to the embodiment, certainly can the contents based on the specification come Using various structures.

For example, any position that oil filter 70 is set in cooling circuit 32 and fuel feed pump 50,51 (cooling line) all may be used.

In the embodiment, as cooling structure, hybrid vehicle 1 is listed, but as long as being to have rotating electric machine 3 It (motor and generator) and needs to carry out it cooling structural body, is then not limited to this.For example, hybrid vehicle 1 can also For without engine and only using motor as the electric car of driving source or fuel-cell vehicle.

Claims (5)

1. a kind of cooling system of rotating electric machine characterized by comprising

Refrigerant path is flowed for carrying out cooling refrigerant to rotating electric machine；And

Refrigerant filter removes the impurity of the refrigerant in the flow path of the refrigerant path,

The refrigerant is the surface side that the shell of the built-in rotating electric machine is arranged in filter.

2. the cooling system of rotating electric machine according to claim 1, which is characterized in that

The refrigerant filter connects with having the filter plate of heat dissipation extension, and the surface side of the shell is arranged in.

3. the cooling system of rotating electric machine according to claim 2, which is characterized in that

The filter plate has the heat dissipation extension in peripheral part,

The refrigerant is to connect with the center side of the filter plate and configure with filter.

4. the cooling system of rotating electric machine according to claim 1, which is characterized in that

The cooling system of the rotating electric machine is set in vehicle,

At least described refrigerant is with filter deployment can region with the traveling wind of the vehicle to cool down.

5. a kind of rotating electric machine characterized by comprising

Refrigerant path is flowed for carrying out cooling refrigerant to stator；And

Refrigerant filter removes the impurity of the refrigerant in the flow path of the refrigerant path,

The refrigerant is the surface side that the shell of the built-in stator is arranged in filter.