CN205283307U - Procapsid of motor for electric automobile - Google Patents

Abstract

The utility model provides a procapsid of motor for electric automobile, include: and a front cover. Cylinder and back seat with protecgulum integrated into one piece, the extrusion casing, it registrates on cylinder and back seat, the sealing washer, it presss from both sides between procapsid and extrusion casing, wherein: the radial maximum radius value >of protecgulum, the radial maximum radius value >of back seat, the radial maximum radius value of cylinder. The utility model discloses a procapsid of motor for electric automobile can go on effectively sealedly to the motor to lower manufacturing cost has.

Description

The front housing of motor used for electric vehicle

Technical field

The present invention relates to motor in electric automobile manufacturing technology field, specifically, it relates to the front housing of a kind of motor used for electric vehicle.

Background technology

With the high speed development of automobile industry, petroleum resources shortage, environment become a series of problems such as warm climate warming and appear suddenly. Take pure electric automobile as one of the new-energy automobile important directions that will become China's development of automobile industry of representative. And automobile power-driven system is as the unique propulsion source of pure electric automobile, its performance directly affects the dynamic property of whole car, stability and comfortable property.

Existing motor sealing structure is complicated, and manufacturing cost is higher, and sealing effect is not ideal enough, does not reach automobile industry to the related request of motor seal performance.

In view of this, it is necessary to design a kind of new sealed structure, it is possible to sealed by motor.

Summary of the invention

For above-mentioned technical problem, the front housing of the motor a kind of used for electric vehicle of inventive design, it is possible to motor is carried out effective sealing, and there is lower manufacturing cost.

For achieving the above object, the present invention provides the front housing 4 of a kind of motor used for electric vehicle, comprising: protecgulum 4-1; With protecgulum integrated cylinder 4-2 and back seat 4-3; Extruding housing 3, it is linked on cylinder 4-2 and back seat 4-3; Sealing-ring 2-1, it is clipped between front housing 4 and extruding housing 3; Wherein: the radial maximum radius value of protecgulum 4-1 > the radial maximum radius value of back seat 4-3 > the radial maximum radius value of cylinder 4-2.

Further, described front housing 4 comprises: supporting structure S1, and sealing-ring 2-1 is applied support pressure downward vertically and support pressure radially by it.

Further, the section of described supporting structure S1 is: groove, and it makes being partially submerged into of sealing-ring 2-1.

Further, described groove is arranged along front housing 4 circumference.

Further, described extruding housing 3 comprises: extrusion structure P1, and it can cooperatively interact with supporting structure S1, and sealing-ring 2-1 applies squeeze pressure upwards and radially inside squeeze pressure vertically.

Further, the section of described extrusion structure P1 is: ladder, and it makes another part of sealing-ring 2-1 embed.

Further, described ladder is arranged along extruding housing 3 circumference.

Further, described ladder comprises: the first step, and it is configured to extrude the outer edge of housing 3 circumference; And the 2nd step, its height lower than the first step, and to be close to the inner side that the first step ground mode is arranged on extruding housing 3 circumference outer edge.

Further, described front housing comprises: the angle between described first step and described 2nd step is more than or equal to 90 degree and be less than 180 degree.

Further, described front housing 4 comprises: protecgulum 4-1; With protecgulum integrated cylinder 4-2 and back seat 4-3; Wherein: the radial maximum radius value of protecgulum 4-1 > the radial maximum radius value of back seat 4-3 > the radial maximum radius value of cylinder 4-2.

Further, described front housing comprises: the radial maximum radius value of described extruding housing 3>the radial maximum radius value of back seat 4-3; Further, radial maximum radius value<the radial maximum radius value of protecgulum 4-1 of described extruding housing 3.

Further, described front housing comprises: described extruding housing 3 is linked in the outside of cylinder 4-2; Further, described extruding housing 3 is resisted against the downside of protecgulum 4-1 towards the edge of protecgulum 4-1 side.

Further, described front housing comprises: described extruding housing 3 is towards the stepped structure in edge of protecgulum 4-1 side; The junction of described protecgulum 4-1 and cylinder 4-2 is groove-like structure; Wherein, step structure and groove-like structure complement each other to form closed cavity, to hold sealing-ring 2-1.

The front housing of a kind of motor used for electric vehicle provided by the invention, it is possible to motor is carried out effective sealing, and there is lower manufacturing cost.

The aspect that the present invention adds and advantage will part provide in the following description, and these will become obvious from the following description, or be recognized by the practice of the present invention.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the part of the application, and the schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention. In the accompanying drawings:

Fig. 1 is the explosive view of the front housing of the motor used for electric vehicle of one embodiment of the invention;

Fig. 2 is the front view of the integrated driving device used for electric vehicle of one embodiment of the invention;

Fig. 3 is sectional view along E-E line in Fig. 2 device;

Fig. 4 is the partial enlargement schematic diagram of F circle in Fig. 3 device.

Embodiment

For making those skilled in the art understand the technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail. Hereinafter describing embodiments of the present invention in detail, the example of described enforcement mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the enforcement mode being described with reference to the drawings, only for explaining the present invention, and limitation of the present invention can not be interpreted as.

It can be appreciated that unless expressly stated, odd number form " " used herein, " one ", " described " and " being somebody's turn to do " also can comprise plural form to those skilled in the art of the present technique. Should be further understood that, the wording " comprising " used in the specification sheets of the present invention refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group. It is to be understood that when we claim element be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or can also there is intermediary element. Wording "and/or" used herein comprises one or more any cell listing item being associated and all combinations.

It can be appreciated that unless otherwise defined, all terms used herein comprise technical term and have the meaning identical with the general understanding of the those of ordinary skill in art of the present invention with scientific terminology those skilled in the art of the present technique. It should be further understood that those terms of definition should be understood to have the meaning consistent with the meaning in the context of prior art in such as general dictionary, and unless defined as here, can not explain by idealized or too formal implication.

Fig. 1 is the explosive view of the front housing of the motor used for electric vehicle of one embodiment of the invention. Fig. 2 is the front view of the integrated driving device used for electric vehicle of one embodiment of the invention. As shown in Figure 1-2, sealed structure provided by the invention is applied to the integrated driving device of electromobile, and this integrated driving device can comprise: adopt the motor that electric current drives and the invertor changed by AC-to-DC electricity. Front housing 4, extruding housing 3 and back casing 1 coordinate successively and form and coordinate successively and form closed motor housing. This housing can as the shell of integrated driving device. The front housing of motor used for electric vehicle provided by the invention, it is possible to motor and invertor are integrated, saves assembling space, reduces equipment weight, save the support for supporting invertor, thus much slower manufacturing cost.

Invertor (not shown) is arranged in back casing 1, and it can comprise capacitance module and power model, and capacitance module has the DC connecting end being electrically connected with direct supply; Power model its have multiple switch circuit, DC input terminal and ac output end, direct-flow input end is electrically connected on direct supply (such as, Vehicular accumulator cell), and ac output end is electrically connected on electric motor. The direct current obtained from direct-flow input end is converted to alternating-current by switch circuit, and is exported by ac output end. The chamber that power model and capacitance module encapsulation are formed by inverter case (that is, back casing 1) by it is indoor.

The stator module of motor is provided with three AC input terminals at it towards one end of invertor, and AC input terminal is arranged on the downside of the end of stator module. Correspondingly, three ac output end it are provided with in the downside of one end of the power model of invertor, after described three ac output end are arranged to have turned invertor and group of motors, three ac output end directly contact with corresponding three AC input terminals, such as be threaded connection, welding, soldering, brazing, riveted joint and Elastic Contact link together, and without the need to using extra wire, this reduces manufacturing cost.

Need motor and invertor to be cooled due to the drive unit of integrate motor and invertor, therefore the minor structure of composition coolant passage can be designed on front housing 4, extruding housing 3 and back casing 1, make after front housing 4, extruding housing 3 and back casing 1 coordinate successively, closed coolant flow channel (that is, coolant passage) is formed in enclosure interior.

As a kind of embodiment, as shown in Figure 1, front housing 4 can comprise: protecgulum 4-1; With protecgulum integrated cylinder 4-2 and back seat 4-3; Wherein: the radial maximum radius value of protecgulum 4-1>the radial maximum radius value of back seat 4-3>the radial maximum radius value of cylinder 4-2, namely the radial maximum radius value of protecgulum 4-1 is greater than the radial maximum radius value of back seat 4-3, and the radial maximum radius value of back seat 4-3 is greater than the radial maximum radius value of cylinder 4-2. Such as, the radial maximum radius value of described extruding housing 3>the radial maximum radius value of back seat 4-3; Further, radial maximum radius value<the radial maximum radius value of protecgulum 4-1 of described extruding housing 3. Like this, it is possible to front housing 4 is linked in extruding housing 3, and make back seat 4-3 through extruding housing 3 to carry out coordinating subsequently with back casing 1. Based on this structure, the present invention provides the front housing of a kind of motor used for electric vehicle, it is possible to comprising: front housing 4, extruding housing 3 and back casing 1, and these three housings coordinate successively and form the motor housing closed; Coolant passage, it is arranged in front housing 4 circumference; Sealing-ring 2-1, it is clipped between front housing 4 and extruding housing 3 and seals; 2nd sealing-ring 2-2, it is clipped between front housing 4, extruding housing 3 and back casing 1, to be sealed by coolant passage 4-6.

Owing to the radial maximum radius value of protecgulum 4-1 is greater than the radial maximum radius value of back seat 4-3, and the radial maximum radius value of back seat 4-3 is greater than the radial maximum radius value of cylinder 4-2, therefore the dumbbell-shaped structure that big centre, the in fact similar two of the shape of front housing 4 is little, thus after currently housing 4 coordinates with extruding housing 3, between cylinder 4-2 and extruding housing 3, form the circulation passage of refrigerant.

Fig. 3 is sectional view along E-E line in Fig. 2 device. As shown in Figure 3, the bottom of integrated driving device forms cavity by back casing, front housing, extruding housing, and refrigerant is (such as, water) entrance is arranged on bonnet, when refrigerant is when flowing through lower cavity, take away the amount heat that invertor electronic devices and components produce, play the effect of cooling. It is also conceivable to increase some compressing tablets between back casing and extruding housing, to regulate the cavity size for refrigerant flowing. Coolant passage in the middle part of integrated driving device is by stator shell, namely before, housing 4, extruding housing 3 and back casing 1 form, such as, wherein: in stator shell upper, sealing-ring 2-1 (O) is adopted to seal between front housing 4 and extruding housing 3. Front housing 4 has little shrink range with back casing 1 in the process forming coolant flow channel, is completed by press-loading process. In addition, front housing 4 and back casing 1 can be linked by bolt. Different from the refrigerant effect of circulation in the cavity in integrated driving device lower inverter, stator is mainly cooled by the coolant passage at middle part and the coolant outlet on top.

Fig. 4 is the partial enlargement schematic diagram of F circle in Fig. 3 device. As shown in Figure 4, front housing 4 can comprise: supporting structure S1, and sealing-ring 2-1 is applied support pressure downward vertically and support pressure radially by it. Such as, it is possible to be designed to by supporting structure S1, its section is: groove, and it makes being partially submerged into of sealing-ring 2-1. Such as, groove is arranged along front housing 4 circumference. Extruding housing 3 comprises: extrusion structure P1, and it can cooperatively interact with supporting structure S1, and sealing-ring 2-1 applies squeeze pressure upwards and radially inside squeeze pressure vertically. Such as, it is possible to be designed to by extrusion structure P1, its section is: ladder, and it makes another part of sealing-ring 2-1 embed. Such as, ladder is arranged along extruding housing 3 circumference. Such as, ladder comprises further: the first step, and it is configured to extrude the outer edge of housing 3 circumference; And the 2nd step, its height lower than the first step, and to be close to the inner side that the first step ground mode is arranged on extruding housing 3 circumference outer edge. Such as, angle between the first step and the 2nd step is more than or equal to 90 degree and be less than 180 degree. Such as, the outside that housing 3 is linked in cylinder 4-2 is extruded; Further, described extruding housing 3 is resisted against the downside of protecgulum 4-1 towards the edge of protecgulum 4-1 side. Such as, the edge stepped structure of housing 3 towards protecgulum 4-1 side is extruded; The junction of described protecgulum 4-1 and cylinder 4-2 is groove-like structure; Wherein, step structure and groove-like structure complement each other to form closed cavity, to hold sealing-ring 2-1. Such as, sealing-ring 2-1 can be O.

Above-mentioned sealed structure can be applied in electric automotive motor, in the drive unit that especially motor and invertor integrate. With regard to the formation of sealed structure, as shown in Figure 4, front housing 4, the 2nd sealing-ring 2-2 and extruding housing 3 complement each other to form sealing. Above-mentioned sealed structure belongs to triangle sealing (axial and radial), and such sealing is more reliable.

Above-mentioned sealed structure is possible not only to generate that protection stator always becomes, the shell of rotor assembly and invertor; and it is configured with the stator general name to motor in this shell being combined into and different cooling structures that invertor cools respectively; thus form the coolant flow channel that integration is through, for the overall cooling of motor and invertor. Cooling fluid flows to mainly through front housing 4, extruding housing 3, sealing-ring composition, and before wherein, housing 4 and extruding housing 3 have little shrink range being formed in the process that coordinates, are completed by press-loading process, and this coolant passage is mainly that stator cools.

As another kind of embodiment, the present invention provides the sealed structure that a kind of two parts coordinate, and comprising: sealing-ring 2-1; Supporting structure S1, sealing-ring 2-1 is applied support pressure downward vertically and support pressure radially by it; Extrusion structure P1, it can cooperatively interact with supporting structure S1, and sealing-ring 2-1 applies squeeze pressure upwards and radially inside squeeze pressure vertically; Wherein, sealing-ring 2-1 is clipped between supporting structure S1 and extrusion structure P1 to realize sealing.

In embodiment of the present invention scheme, have employed O sealing, and on sealing groove, define unique mechanism, as shown in Figure 4, forming sealing groove at front housing 4 and extruding housing 3 respective outer side edges, it is more reliable that this sealing belongs to triangle sealing (axial and radial) such sealing. O RunddichtringO is a kind of extrusion pressing type sealing, the basic functional principle of extrusion pressing type sealing relies on the distortion of sealing member generation elasticity, causes contact pressure on sealing contact surface, and contact pressure is greater than the interior pressure of sealed medium, then do not leak, otherwise then leak.

As shown in Figure 1, before in the coolant passage 4-6 at middle part, housing has a shunting muscle 4-5, and when cooling fluid flows into from invertor, cooling fluid flowing in counterclockwise a week, then arrives water outlet position, forms a cooling on a large scale like this. Such as, the axial direction due that the shunting S-type edge of muscle 4-5 is parallel to cylinder 4-2 is arranged on the cylinder 4-2 between protecgulum 4-1 and back seat 4-3, thus coolant passage 4-6 is separated so that refrigerant can circulate along coolant passage 4-6 along predetermined direction.

In addition, owing to adopting the project organization of the present invention, the front housing 4 of inventive design can adopt die casting technique, and extruding housing 3 can adopt extrusion process. With prior art, usually adopt the mode of sand casting housing formation coolant flow channel completely different, all runners are all concentrated in a housing by prior art, thus increase manufacture difficulty, and the scheme that the present invention adopts this kind two parts composition housings is a lot of relative to simplifying in the complete casting technique of housing, thus improve yield rate. The sand casting process Problems existing of prior art easily produces pore in sand casting process, causes coolant flow channel to leak, and yield rate is low.

The front housing of the motor a kind of used for electric vehicle of inventive design, it is possible to the cooling body that motor and invertor integrate is sealed, and there is lower manufacturing cost.

The above is only the part enforcement mode of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. the front housing (4) of a motor used for electric vehicle, it is characterised in that, comprising:

Protecgulum (4-1);

With the integrated cylinder of protecgulum (4-2) and back seat (4-3);

Extruding housing (3), it is linked on cylinder (4-2) and back seat (4-3);

Sealing-ring (2-1), it is clipped between front housing (4) and extruding housing (3);

Wherein: the radial maximum radius value of protecgulum (4-1) > the radial maximum radius value of back seat (4-3) > the radial maximum radius value of cylinder (4-2).

2. front housing according to claim 1, it is characterised in that, described front housing (4) comprising:

Supporting structure (S1), sealing-ring (2-1) is applied support pressure downward vertically and support pressure radially by it.

3. front housing according to claim 2, it is characterised in that, the section of described supporting structure (S1) is:

Groove, it makes being partially submerged into of sealing-ring (2-1).

4. the front housing of motor used for electric vehicle according to claim 3, it is characterised in that, described groove is arranged along front housing (4) circumference.

5. the front housing of motor used for electric vehicle according to claim 1, it is characterised in that, described extruding housing (3) comprising:

Extrusion structure (P1), it can cooperatively interact with supporting structure (S1), and sealing-ring (2-1) applies squeeze pressure upwards and radially inside squeeze pressure vertically.

6. the front housing of motor used for electric vehicle according to claim 5, it is characterised in that, the section of described extrusion structure (P1) is:

Ladder, it makes another part of sealing-ring (2-1) embed.

7. the front housing of motor used for electric vehicle according to claim 6, it is characterised in that, described ladder comprises further:

First step, it is configured to extrude the outer edge of housing (3) circumference; And

2nd step, its height is lower than the first step, and is arranged on, to be close to the first step ground mode, the inner side extruding housing (3) circumference outer edge.

8. the front housing of motor used for electric vehicle according to claim 1, it is characterised in that, described front housing (4) comprises further:

Coolant passage (4-6), it is arranged in cylinder (4-2) circumference.

9. the front housing of motor used for electric vehicle according to claim 1, it is characterised in that, comprise further:

Described extruding housing (3) is linked in the outside of cylinder (4-2); Further,

Described extruding housing (3) is resisted against the downside of protecgulum (4-1) towards the edge of protecgulum (4-1) side.

10. the front housing of motor used for electric vehicle according to claim 9, it is characterised in that, comprise further:

Described extruding housing (3) is towards the stepped structure in edge of protecgulum (4-1) side;

Described protecgulum (4-1) is groove-like structure with the junction of cylinder (4-2);

Wherein, step structure and groove-like structure complement each other to form closed cavity, to hold sealing-ring (2-1).