CN113541371B - Electric automobile motor installing system with waterproof, cooling function - Google Patents

Electric automobile motor installing system with waterproof, cooling function Download PDF

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Publication number
CN113541371B
CN113541371B CN202110978878.2A CN202110978878A CN113541371B CN 113541371 B CN113541371 B CN 113541371B CN 202110978878 A CN202110978878 A CN 202110978878A CN 113541371 B CN113541371 B CN 113541371B
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China
Prior art keywords
motor
centrifugal fan
cabin
interlayer
impeller
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CN202110978878.2A
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Chinese (zh)
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CN113541371A (en
Inventor
潘力溧
郑朝蕾
陈斌
吴诗宇
刘治阳
尹潇
颜文森
黄林波
颜艺
杨浩
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Chongqing University
China Merchants Testing Vehicle Technology Research Institute Co Ltd
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Chongqing University
China Merchants Testing Vehicle Technology Research Institute Co Ltd
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Priority to CN202110978878.2A priority Critical patent/CN113541371B/en
Publication of CN113541371A publication Critical patent/CN113541371A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention discloses an electric automobile motor installation system with waterproof and cooling functions, which comprises a double-layer motor cabin, a motor arranged in the motor cabin and a centrifugal fan communicated with an inner cavity and an interlayer of the motor cabin, wherein the motor cabin is provided with a water inlet and a water outlet; the box body of the motor cabin is fixedly connected with the frame of the electric automobile into a whole, an interlayer and an inner cavity of the box body are respectively provided with an exhaust port communicated with the outside, and the top of the box body is sealed by a cover plate; the impeller of the centrifugal fan is arranged on a power shaft of the motor; install the motor in closed motor storehouse to motor direct drive centrifugal fan operation through in the motor storehouse, when the motor storehouse was intake, advance to go into the intermediate layer in, and the high-pressure draught that produces through centrifugal fan can in time be with getting into the intraformational log raft play of intermediate layer, and then the effectual impaired problem of motor that has avoided motor storehouse inner chamber to intake and cause the motor, the high-pressure draught that centrifugal fan produced still gets into the motor storehouse inner chamber and carries out the forced air cooling to the motor simultaneously, improves the cooling effect.

Description

Electric automobile motor installing system with waterproof, cooling function
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a waterproof and cooling electric automobile motor mounting system.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source, integrates advanced technologies in the aspects of power control and driving of the automobile, and is advanced in technical principle, new in technology and new in structure. The new energy automobile comprises a hybrid electric automobile, a pure electric automobile, a fuel cell electric automobile and the like.
The motor of present electric automobile all adopts water-cooling structure to the motor storehouse does not possess the waterproof function of initiative, when needs are walked through the highway section of wading, appears very easily that the motor storehouse intakes and then leads to the condition of motor bubble water, causes parts such as corrosion and bearing impaired, the performance and the life-span of very big influence motor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a motor installation system of an electric automobile with waterproof and cooling functions, wherein a motor is installed in a closed motor cabin, a centrifugal fan is directly driven to operate by the motor in the motor cabin, when water enters the motor cabin, the motor cabin enters an interlayer firstly, and high-pressure air flow generated by the centrifugal fan can discharge the water entering the interlayer in time, so that the problem of motor damage caused by water entering the cavity of the motor cabin is effectively avoided, and meanwhile, the high-pressure air flow generated by the centrifugal fan enters the cavity of the motor cabin to cool the motor in air, so that the cooling effect is improved.
The invention discloses an electric automobile motor installation system with waterproof and cooling functions, which comprises a double-layer motor cabin, a motor arranged in the motor cabin and a centrifugal fan communicated with an inner cavity and an interlayer of the motor cabin; the box body of the motor cabin is fixedly connected with the frame of the electric automobile into a whole, an interlayer and an inner cavity of the box body are respectively provided with an exhaust port communicated with the outside, and the top of the box body is sealed by a cover plate; centrifugal fan's impeller is installed on the power shaft of motor, and the condition of intaking appears easily in the motor storehouse because the restriction of machining precision and each part cooperation precision, adopts bilayer structure design, advance when making into water and go into in the clamp, and then utilize the high-pressure draught that centrifugal fan produced to press from both sides intraformational water outflow, have the waterproof function of initiative, and high-pressure draught still gets into the motor storehouse inner chamber simultaneously, then flows from the discharge port, makes motor self water-cooling add outside air-cooling and combine together, improves the cooling effect greatly.
Furthermore, the inner surface of the bottom of the interlayer is a funnel-shaped conical surface, a discharge port of the interlayer is arranged at the lowest position and is provided with a normally closed electromagnetic valve, two electrodes with the same height are arranged on the conical surface, the normally closed electromagnetic valve and the two electrodes are connected with a controller of the electric automobile, when accumulated water in the interlayer reaches the height of the two motors, the two electrodes are conducted, a signal is sent to the controller of the electric automobile, the normally closed electromagnetic valve is controlled to be opened by the controller of the electric automobile, and the accumulated water is pressed out by high-pressure air flow; when no accumulated water exists or the accumulated water does not reach the height of the electrode, the high-pressure airflow generated by the centrifugal fan completely enters the inner cavity of the motor cabin for air cooling.
Further, a shell of the centrifugal fan and the motor bin are integrally formed, and a power shaft of the motor penetrates through the shell of the centrifugal fan and extends out; the casing of centrifugal fan is equipped with two air outlets, and one of them air outlet and the intermediate layer in motor storehouse intercommunication, another air outlet and the inner chamber in motor storehouse intercommunication are equipped with the machine seal between the power shaft of motor and centrifugal fan's the casing, and two air outlets can set up one on the other, and the reasonable selection is communicate in the intermediate layer or the inner chamber in motor storehouse.
Furthermore, two groups of positioning assemblies which are mirror-symmetric to each other are mounted at two ends of an impeller of the centrifugal fan, each positioning assembly comprises a positioning ring, a spring and two wedge-shaped blocks, the positioning rings are fixed on the end faces of the impeller through screws, two guide grooves which are mirror-symmetric to each other and correspond to the two wedge-shaped blocks one to one are formed in the inner circular faces of the positioning rings, the wedge-shaped blocks are enabled to be synchronously close to the power shaft of the motor and the corresponding end faces of the impeller when sliding along the guide grooves or to be synchronously far away from the power shaft of the motor and the corresponding end faces of the impeller, the wedge-shaped blocks are clamped between the positioning rings and the power shaft of the motor under the elastic force action of the springs, and the two wedge-shaped blocks in each positioning ring are arranged in the two guide grooves which are mirror-symmetric to each other, so that the positioning rings can be bidirectionally locked relative to the power shaft of the motor in the rotating direction, and further realize the positioning in the rotating direction of the positioning rings and the positioning rings to enable the positioning rings to synchronously rotate; meanwhile, a certain inclination is formed between the guide groove and the end face of the impeller, so that each group of positioning components can axially and unidirectionally lock the impeller, and the two groups of positioning components which are in mirror symmetry realize axial fixing and positioning of the impeller under the combined action.
Furthermore, a reinforcing plate fixedly connected between the inner side wall and the outer side wall is arranged in an interlayer of the motor cabin; still be fixed with the mounting bracket that is used for installing the motor in the inner chamber in motor storehouse, overall structure stability is good, is suitable for practical application.
The invention has the beneficial effects that: according to the waterproof and cooling electric automobile motor installation system, the motor is installed in the closed motor bin, the centrifugal fan is directly driven to operate by the motor in the motor bin, when water enters the motor bin, the water enters the interlayer firstly, and high-pressure air flow generated by the centrifugal fan can timely discharge the water entering the interlayer, so that the problem that the motor is damaged due to water entering the inner cavity of the motor bin is effectively solved, and meanwhile, the high-pressure air flow generated by the centrifugal fan enters the inner cavity of the motor bin to cool the motor in an air mode, so that the cooling effect is improved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a side view of the positioning assembly;
figure 4 is an expanded view of the inner circumference of the retaining ring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1-4: the electric automobile motor installation system with the waterproof and cooling functions comprises a double-layer motor cabin, a motor 9 installed in the motor cabin and a centrifugal fan communicated with an inner cavity 6 and an interlayer 7 of the motor cabin; the box body 1 of the motor cabin is fixedly connected with the frame of the electric automobile into a whole, an interlayer 7 and an inner cavity 6 of the box body are respectively provided with an exhaust port 10 communicated with the outside, and the top of the box body 1 is sealed by a cover plate 8; centrifugal fan's impeller 3 is installed on motor 9's power shaft 4, the motor storehouse is because the restriction of machining precision and each part cooperation precision, the condition of intaking appears easily, adopt the bilayer structure design, advance in the intermediate layer 7 when making into water, and then utilize the high pressure draught that centrifugal fan produced to extrude the rivers in the intermediate layer 7, the waterproof function of initiative has, high pressure draught still gets into motor storehouse inner chamber 6 simultaneously, then flow out from discharge port 10, make motor 9 self add outside air-cooling and combine together, improve the cooling effect greatly.
In this embodiment, the inner surface of the bottom of the interlayer 7 is a funnel-shaped conical surface, the discharge port 10 of the interlayer 7 is arranged at the lowest position and is provided with a normally closed electromagnetic valve 12, two electrodes 11 with the same height are arranged on the conical surface, the normally closed electromagnetic valve 12 and the two electrodes 11 are both connected with a controller of the electric vehicle, when the accumulated water in the interlayer 7 reaches the height of the two motors 9, the two electrodes 11 are conducted to send a signal to the controller of the electric vehicle, the controller of the electric vehicle controls the normally closed electromagnetic valve 12 to be opened, and the accumulated water is pressed out by high-pressure air flow; when no accumulated water exists or the accumulated water does not reach the height of the electrode 11, the high-pressure airflow generated by the centrifugal fan completely enters the inner cavity 6 of the motor cabin for air cooling.
In the embodiment, the shell 2 of the centrifugal fan and the motor cabin are integrally formed, and the power shaft 4 of the motor 9 penetrates through the shell 2 of the centrifugal fan and extends out; the casing 2 of centrifugal fan is equipped with two air outlets, and one of them air outlet communicates with the intermediate layer 7 in motor storehouse, and another air outlet communicates with the inner chamber 6 in motor storehouse, is equipped with between the power shaft 4 of motor 9 and centrifugal fan's casing 2 and seals 5, and two air outlets can set up one on the other, and the reasonable selection is communicate in the intermediate layer 7 or the inner chamber 6 in motor storehouse.
In this embodiment, two sets of positioning assemblies that are mirror-symmetric to each other are installed at two ends of an impeller 3 of the centrifugal fan, each positioning assembly includes a positioning ring 13, a spring 16, and two wedge-shaped blocks 15, the positioning ring 13 is fixed to an end surface of the impeller 3 by screws, two guide grooves 14 that are mirror-symmetric to each other are provided on an inner circular surface of the positioning ring 13, the two guide grooves 14 correspond to the two wedge-shaped blocks 15 one by one, so that the wedge-shaped blocks 15 are synchronously close to corresponding end surfaces of a power shaft 4 of a motor 9 and the impeller 3 when sliding along the guide grooves 14, or are synchronously far away from corresponding end surfaces of the power shaft 4 of the motor 9 and the impeller 3, the wedge-shaped blocks 15 are clamped between the positioning ring 13 and the power shaft 4 of the motor 9 under the elastic force of the spring 16, and the two wedge-shaped blocks 15 in each positioning ring 13 are arranged in the two guide grooves 14 that are mirror-symmetric to each other, so that the positioning ring 13 can be bidirectionally locked in the rotation direction with respect to realize the positioning in the rotation direction of the two positioning rings and make them rotate synchronously; meanwhile, a certain inclination is formed between the guide groove 14 and the end face of the impeller 3, so that each group of positioning components can axially and unidirectionally lock the impeller 3, and the two groups of positioning components which are in mirror symmetry with each other act together to axially fix and position the impeller 3, and by adopting the structure, the impeller 3 can be installed and fixed without changing the structure of the power shaft 4 of the motor.
In this embodiment, a reinforcing plate fixedly connected between the inner and outer side walls is arranged in the interlayer 7 of the motor cabin; still be fixed with the mounting bracket that is used for installing motor 9 in the inner chamber 6 in motor storehouse, overall structure stability is good, is suitable for practical application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (4)

1. The utility model provides an electric automobile motor installing the system with waterproof, cooling function which characterized in that: the centrifugal fan is characterized by comprising a double-layer motor cabin, a motor arranged in the motor cabin and a centrifugal fan communicated with an inner cavity and an interlayer of the motor cabin; the box body of the motor cabin is fixedly connected with the frame of the electric automobile into a whole, an interlayer and an inner cavity of the box body are respectively provided with an exhaust port communicated with the outside, and the top of the box body is sealed by a cover plate; the impeller of the centrifugal fan is arranged on a power shaft of the motor, the inner surface of the bottom of the interlayer is a funnel-shaped conical surface, and the discharge port of the interlayer is arranged at the lowest position and is provided with a normally closed electromagnetic valve; two electrodes with the same height are installed on the conical surface, and the normally closed electromagnetic valve and the two electrodes are connected with a controller of the electric automobile.
2. The electric vehicle motor mounting system with waterproof and cooling functions as claimed in claim 1, wherein: the shell of the centrifugal fan and the motor bin are integrally formed, and a power shaft of the motor penetrates through the shell of the centrifugal fan and extends out; the casing of centrifugal fan is equipped with two air outlets, and one of them air outlet communicates with the intermediate layer in motor storehouse, and another air outlet communicates with the inner chamber in motor storehouse.
3. The electric vehicle motor mounting system with waterproof and cooling functions as claimed in claim 2, wherein: two sets of locating component that each other is mirror symmetry are installed at centrifugal fan's impeller both ends, every locating component includes the holding ring, spring and two wedge, the holding ring passes through the screw fixation in the terminal surface of impeller, the interior disc of holding ring is equipped with two guide ways that are mirror symmetry each other with two wedge one-to-ones, make the wedge slide along the guide way when synchronous near the power shaft of motor and the corresponding terminal surface of impeller, perhaps keep away from the power shaft of motor and the corresponding terminal surface of impeller in step, the wedge chucking is between the power shaft of holding ring and motor under the spring action of spring.
4. The electric vehicle motor mounting system with waterproof and cooling functions as claimed in claim 3, wherein: a reinforcing plate fixedly connected between the inner side wall and the outer side wall is arranged in the interlayer of the motor cabin; an installation frame for installing a motor is further fixed in the inner cavity of the motor cabin.
CN202110978878.2A 2021-08-25 2021-08-25 Electric automobile motor installing system with waterproof, cooling function Active CN113541371B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110978878.2A CN113541371B (en) 2021-08-25 2021-08-25 Electric automobile motor installing system with waterproof, cooling function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110978878.2A CN113541371B (en) 2021-08-25 2021-08-25 Electric automobile motor installing system with waterproof, cooling function

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CN113541371A CN113541371A (en) 2021-10-22
CN113541371B true CN113541371B (en) 2022-10-14

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107919762A (en) * 2017-12-21 2018-04-17 傅皓衍 A kind of efficient shock-absorbing motor
CN209730983U (en) * 2018-12-13 2019-12-03 丹东山川电机有限公司 A kind of radiating motor

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