CN108429403A - A kind of motor based on coolant liquid is from driving cooling structure - Google Patents
A kind of motor based on coolant liquid is from driving cooling structure Download PDFInfo
- Publication number
- CN108429403A CN108429403A CN201810487840.3A CN201810487840A CN108429403A CN 108429403 A CN108429403 A CN 108429403A CN 201810487840 A CN201810487840 A CN 201810487840A CN 108429403 A CN108429403 A CN 108429403A
- Authority
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- China
- Prior art keywords
- rotor core
- coolant liquid
- core
- air
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 65
- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 239000007788 liquid Substances 0.000 title claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000009423 ventilation Methods 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 238000002309 gasification Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 241000883990 Flabellum Species 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a kind of motors based on coolant liquid from cooling structure is driven, and cooler is mounted on cover top portion；Axis band external fan rotates coaxially under shaft drive with shaft；Seal closure passes through stator core internal diameter and extends to inside cooler, is isolated to form closed space with the rotor core space in shell；Coolant liquid is injected in seal closure；It is axially external that ventilation duct is located at stator core, and both ends are communicated with rotor core space；Several subplates are connected between shaft and rotor core, the space between subplate forms iron core axial ducts；Air gap is formed between rotor core and seal closure inner peripheral surface；In the rotor circulating air duct that internal fan is used to be made of rotor core space, ventilation duct, iron core axial ducts, rotor core radial passage, air gap, dynamic air-flow is generated.The present invention has two sets of independent cooling circuits of rotor, but is absorbed heat by coolant liquid, is increased the service efficiency of coolant liquid, is reduced cost, and improve radiating efficiency.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of motor based on coolant liquid drives cooling structure certainly.
Background technology
Now socially used motor usually can all encounter the problem of the motor feels hot, this is the disaster in industry
Topic.Typically achieve the purpose that cooling by increase material and reduction capacity motor.It will result directly in copper consumption and use iron
Far beyond the common electric machine of same capacity.Such copper loss and iron loss are also above same type motor.How to solve in this industry
Problem so that common electric machine is subtracted material synergy, make motor of the new and high technology based on coolant liquid from driving cooling structure cooling even running
As matter of utmost importance.
Achieve the purpose that cooling in addition to changing motor material and structure, in industry frequently with the type of cooling also have air-cooled dissipate
Heat includes mainly：
1, open-type ventilating and cooling.Cooling medium (generally air) is sent directly into inside motor by the type of cooling, inhales
It is discharged to ambient enviroment after receiving energy.The type of cooling be suitable for general cleaning, it is corrosion-free, without under explosion environment open-type and
Drip-proof machine is higher to motor application occasion and environmental requirement；
2, closed circulation cooling.Self-contained closed loop is isolated with ambient enviroment inside motor, is existed by air
Heat is taken out of outside machine through cooler after the heat absorption of closed loop.This radiating mode heat dissipation is slow, and motor is high-speed rotating
When the high temperature that generates be difficult to Quick diffusing and go out, be easy to cause motor ages, influence the service life of motor.
Therefore, it is reliably easy to operation how to provide a kind of structure, function admirable, the motor based on coolant liquid drives cooling certainly
Structure is those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
In view of this, a kind of based on coolant liquid it is an object of the invention in place of overcome the deficiencies in the prior art, provide
Motor has independent stator cooling system and rotor cooling system, solves existing motor cooling from cooling structure is driven
Radiating efficiency is low, the problems such as can not targetedly being cooled down respectively to rotor.Its concrete scheme is such as to achieve the above object
Under：
The motor includes shell, is fixed on the stator core in the shell by engine base, penetrates the stator core
The rotor core of inner cavity, stator core are aligned with rotor core, and the rotor core is socketed in the middle part of shaft, further include sealing
Cover, ventilation duct, coolant reservoirs, internal fan and cooler；
The cooler is mounted on the cover top portion；
Axis band external fan is fixed on the shaft shaft tail end, under shaft drive with the same shaft rotation of the shaft
It is dynamic, and outside the casing；Axis band external fan is not necessarily to independent driving source, and the power of shaft when passing through motor operation drives
Axis band external fan forms cooling wind, and carries out absorbing and cooling temperature to the coolant liquid in stator cooling system, is carried while reducing cost
The high working efficiency of electromotor cooling system.
The seal closure passes through the stator core internal diameter to cover the stator core, and extends in the cooler
Portion is isolated to form closed space with the rotor core space in the shell；Coolant liquid is injected in seal closure, forms coolant liquid
Pond, coolant liquid submerge the stator core and stator winding；
It is axially external that the ventilation duct is located at the stator core, and inside the seal closure；The ventilation duct two
End is communicated with the rotor core space；
Several subplates are connected between the shaft and the rotor core, the space between the subplate forms iron mandrel
To air duct；
Air gap is formed between the rotor core and the seal closure inner peripheral surface, the air gap is radial with the rotor core
Air duct communicates；
The internal fan is located at the rotor core space, and is fixed on the shaft axle stretch end, and the internal fan has
Several flabellums, the flabellum are circumferentially disposed along the shaft；For by the rotor core space, the ventilation duct, the iron
In the rotor circulating air duct that core axial ducts, the rotor core radial passage, the air gap are constituted, dynamic air-flow is generated.
Preferably, the cooler side is provided with fan guard, and the fan guard is located at together with axis band external fan
Side.
Preferably, fan guard is installed, and the fan guard is by air flow guiding to the wind outside axis band external fan
Fan cover, the coolant liquid for leading to the cooler cooling gasification.
Preferably, wind shield is provided in the fan guard, and the wind shield is tilted to the cooler side.It tilts
Angle meets the cold wind for draining the fan guard and imports in cooler.
Preferably, there is the fan guard air inlet, extraneous air to pass through the air inlet under the action of axis band external fan
Mouth enters the fan guard.
Preferably, the ventilation duct is provided with several, and is evenly distributed in an axial direction on the outside of the stator core.
Preferably, the head end of the iron core axial ducts is open, for receiving the air-flow in circulating air duct；The iron
The end of core axial ducts is closed, for air-flow to be imported the rotor core radial passage.
Preferably, the cooler is internally provided with several cooling tubes, is logical by outer fan inside the cooling tube
Enter cold air, the heat of the coolant liquid of gasification is taken away, the gasification coolant liquid for losing heat is condensed into again described in liquid inflow
Coolant reservoirs.
Preferably, the cooler uses the type of cooling of water cooling, is passed through liquid in the cooling tube, including water and other
Cooling liquid, is equally played the liquefied effect of the coolant liquid.
Preferably, the position that the fan guard is connect with the fan guard is provided with ventilating board, and the ventilating board can make cold
Wind uniformly flows into cooling tube, to increase cooling effect.
Preferably, the cooler is provided with air outlet in the opposite side of the fan guard, the vertical institute of the air outlet
State wind path setting.
Preferably, the shaft both ends pass through bearing and the non-drive connection of the shell.
Preferably, the coolant liquid is isolated cryogenic volatilised liq.
Preferably, the brushless dual-feed motor includes motor and generator.Either generator or motor, the present invention
The motor cooling of offer is applicable in.
A kind of motor based on coolant liquid of the present invention is from cooling structure is driven, due to being designed with two sets of independent coolings of rotor
Circuit, but absorbed heat by coolant liquid, reduce complicated cooling structure, increases the service efficiency of coolant liquid, reduce
Cost.
1, the present invention is to absorb motor stator heat by coolant liquid, and when motor temperature reaches certain value, coolant liquid absorbs
The heat that is distributed in ventilation duct and be volatilized into gas, gas rises to cooler.Cooler is under drive of the axis with external fan, nothing
Need external motor control that can be sent into cold airflow to cooling tube, coolant liquid gas encounters cooling tubular heat and is pulled away, and gas becomes
Liquid flows back to cooling liquid bath again.
2, rotor core of the invention heat dissipation is independent wind path, is operated by shaft, and internal fan exhausting is driven, and makes inside
Wind by rotor core space, iron core axial ducts, rotor core radial passage, air gap constitute rotor circulating air duct flow direction in
Fan end, then hot wind is further through the ventilation duct in stator side embedment coolant liquid.Heat is vented pipe and siphons away during this, becomes
End is blowed at cold wind, is formed into a loop.Achieve the purpose that cooling rotor.
Since the coolant liquid that the technology uses is low temperature volatilised liq, there is non-conductive characteristic, also have to motor insulation and protect
The effect of shield.
The present invention can make common electric machine subtract material increase-volume, and brushless dual-feed motor operation temperature lifting is low, and reliability improves.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of motor based on coolant liquid disclosed by the invention driving cooling structure schematic diagram certainly；
Fig. 2 is a kind of motor based on coolant liquid disclosed by the invention driving cooling structure axial view certainly.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Motor includes shell 1, is fixed on the stator core 2 in shell 1 by engine base, penetrates turning for 2 inner cavity of stator core
Sub- iron core 3, stator core 2 are aligned with rotor core 3, and rotor core 3 is socketed in the middle part of shaft 4, further include seal closure 21, logical
Air hose 23, coolant reservoirs, internal fan 34 and cooler 5；Cooler 5 is mounted on 1 top of shell；Axis band external fan 7, which is fixed on, to be turned
4 shaft tail end of axis rotates coaxially under the drive of shaft 4 with shaft 4, and outside casing 1；Seal closure 21 passes through stator core 2
Internal diameter covers stator core 2, and extends to inside cooler 5, and formation is isolated with the rotor core space 31 in shell 1 and is closed sky
Between；Coolant liquid is injected in seal closure 21, forms coolant reservoirs, and coolant liquid submerges stator core 2 and stator winding；Ventilation duct 23
It is axially external in stator core 2, and inside seal closure 21；23 both ends of ventilation duct are communicated with rotor core space 31；Shaft 4
Several subplates are connected between rotor core 3, the space between subplate forms iron core axial ducts 42；Rotor core 3 with it is close
Air gap 32 is formed between 21 inner peripheral surface of sealing cover, air gap 32 is communicated with rotor core radial passage 33；Internal fan 34 is located at rotor iron
Core space 31, and it is fixed on 4 axle stretch end of shaft, internal fan 34 has several flabellums, flabellum circumferentially disposed along shaft 4；For by
The rotor that rotor core space 31, ventilation duct 23, iron core axial ducts 42, rotor core radial passage 33, air gap 32 are constituted follows
In ring wind path, dynamic air-flow is generated.
In order to advanced optimize above-mentioned technical proposal, 5 side of cooler is provided with fan guard 8, and outside fan guard 8 and axis band
Fan 7 is located at homonymy.
In order to advanced optimize above-mentioned technical proposal, fan guard 11 is installed in 7 outside of axis band external fan, and fan guard 11 will
Air flow guiding is to fan guard 8, the coolant liquid for leading to the cooling gasification of cooler 5.
In order to advanced optimize above-mentioned technical proposal, it is provided with wind shield 9 in fan guard 8, and wind shield 9 is to cooler 5
Side tilts.Angle of inclination meets the cold wind for draining fan guard 11 and imports in cooler 5.
In order to advanced optimize above-mentioned technical proposal, fan guard 11 has air inlet, and extraneous air is in axis with external fan 7
Effect is lower to enter fan guard 11 by air inlet.
In order to advanced optimize above-mentioned technical proposal, ventilation duct 23 is provided with several, and is evenly distributed on determines in an axial direction
2 outside of sub- iron core.
In order to advanced optimize above-mentioned technical proposal, the head end of iron core axial ducts 42 is open, for receiving cycle
Air-flow in wind path；The end of iron core axial ducts 42 is closed, for air-flow to be imported rotor core radial passage 33.
In order to advanced optimize above-mentioned technical proposal, cooler 5 is internally provided with several cooling tubes 51, inside cooling tube 51
It is that cold air is passed through by outer fan, the heat of the coolant liquid of gasification is taken away, the gasification coolant liquid for losing heat is coagulated again
It is polymerized to liquid and flows into coolant reservoirs.
In order to advanced optimize above-mentioned technical proposal, the position that fan guard 11 is connect with fan guard 8 is provided with ventilating board 10,
Ventilating board 10 can be such that cold wind uniformly flows into cooling tube 51.
In order to advanced optimize above-mentioned technical proposal, cooler 5 is provided with air outlet in the opposite side of fan guard 8, goes out
Air port perpendicular wind path setting.
In order to advanced optimize above-mentioned technical proposal, 4 both ends of shaft pass through bearing 6 and 1 non-drive connection of shell.
In order to advanced optimize above-mentioned technical proposal, coolant liquid is isolated cryogenic volatilised liq.
As shown in Fig. 2 axial views, coolant liquid only recycles between stator and cooler coolant circuit.
The cooling of stator core and winding is to absorb heat by coolant liquid.It is upward it to be volatilized into gas after coolant liquid absorption heat
It is covered in cooling tube periphery.It is that cold air is passed through by outer fan inside cooling tube.The heat of the coolant liquid of gasification is taken away,
The gasification coolant liquid for losing heat is condensed into liquid inflow stator coolant reservoirs again.Iterative cycles keep stator temperature steady in this way
It is scheduled on the temperature of setting.
And to the heat absorption of coolant liquid in stator cooling system, it is to be completed by axis band external fan, is not increasing power source
On the basis of, meet motor with starting with cooling function, avoids motor and still execute cooling behaviour in the state of not running
Unnecessary resource caused by making and cost waste, and cooling dynamics changes with output power of motor, without according to different
Power motor is adjusted, using more convenient reasonable.
Rotor cooling system is by the hot-air inside the fan extracting rotor core and winding on rotor.Hot-air is logical
It crosses rotor core axial ducts and converges to air gap between rotor, flow to fan.Fan is sent into hot-air 12 on stator
A ventilation duct, this 12 ventilation ducts are surrounded by coolant liquid.Hot wind by when can siphon away heat by 12 ventilation ducts and coolant liquid
Quantitative change flows into rear end at cold air, and passes through rotor core space and flow into iron mandrel to air duct, with rotor core and winding
Heat is siphoned away by fan, forms rotor circulating air duct.
Motor involved in the present invention is not limited to motor and generator.
Cooler involved in the present invention be not limited to using water cooling or it is air-cooled by the way of cool down to coolant liquid, also wrap
Include the cooling principle of any cooler used in the prior art.
A kind of motor based on coolant liquid provided by the present invention is described in detail from driving cooling structure above,
Principle and implementation of the present invention are described for specific case used herein, and the explanation of above example is only used
In facilitating the understanding of the method and its core concept of the invention；Meanwhile for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as
Limitation of the present invention.
Herein, relational terms such as first and second and the like be used merely to by an entity or operation with it is another
One entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this reality
Relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
Claims (6)
1. a kind of motor based on coolant liquid includes shell from cooling structure, the motor is driven, it is fixed on by engine base described
Stator core in shell penetrates the rotor core of the stator core inner cavity, and stator core is aligned with rotor core, described turn
Sub- iron core is socketed in the middle part of shaft, it is characterised in that：Further include axis band external fan, seal closure, ventilation duct, coolant reservoirs, interior
Fan and cooler；
The cooler is mounted on the cover top portion；
The axis band external fan is fixed on the shaft shaft tail end, is rotated coaxially with the shaft under shaft drive, and
Outside the casing；
The seal closure passes through the stator core internal diameter to cover the stator core, and extends to inside the cooler, with
Rotor core space in the shell is isolated to form closed space；Coolant liquid is injected in seal closure, forms coolant reservoirs, it is cooling
Liquid submerges the stator core and stator winding；
It is axially external that the ventilation duct is located at the stator core, and inside the seal closure；The ventilation duct both ends with
The rotor core space communicates；
Several subplates are connected between the shaft and the rotor core, the space between the subplate forms iron mandrel aweather
Road；
There are the rotor core several gaps, the gap to form rotor core radial passage；The rotor core with it is described
Air gap is formed between seal closure inner peripheral surface, the air gap is communicated with the rotor core radial passage；
The internal fan is located at the rotor core space, and is fixed on the shaft axle stretch end, and the internal fan has several
Flabellum, the flabellum are circumferentially disposed along the shaft；For by the rotor core space, the ventilation duct, the iron mandrel
In the rotor circulating air duct constituted to air duct, the rotor core radial passage, the air gap, dynamic air-flow is generated.
2. a kind of motor based on coolant liquid according to claim 1 drives cooling structure certainly, which is characterized in that described cold
But device side is provided with fan guard, and the fan guard is located at homonymy with axis band external fan.
3. a kind of motor based on coolant liquid according to claim 1 drives cooling structure certainly, which is characterized in that described logical
Air hose is provided with several, and is evenly distributed in an axial direction on the outside of the stator core.
4. a kind of motor based on coolant liquid according to claim 1 drives cooling structure certainly, which is characterized in that the iron
The head end of core axial ducts is open, for receiving the air-flow in circulating air duct；The end of the iron core axial ducts is envelope
It closes, for air-flow to be imported the rotor core radial passage.
5. a kind of motor based on coolant liquid according to claim 1 drives cooling structure certainly, which is characterized in that
The cooler is internally provided with several cooling tubes, is to be passed through cold air by outer fan inside the cooling tube,
The heat of the coolant liquid of gasification is taken away, and the gasification coolant liquid for losing heat is condensed into the liquid inflow coolant reservoirs again.
6. a kind of motor based on coolant liquid according to claim 1 drives cooling structure certainly, which is characterized in that described cold
But liquid is isolated cryogenic volatilised liq.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487840.3A CN108429403B (en) | 2018-05-21 | 2018-05-21 | Motor self-driven cooling structure based on cooling liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487840.3A CN108429403B (en) | 2018-05-21 | 2018-05-21 | Motor self-driven cooling structure based on cooling liquid |
Publications (2)
| Publication Number | Publication Date |
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| CN108429403A true CN108429403A (en) | 2018-08-21 |
| CN108429403B CN108429403B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810487840.3A Active CN108429403B (en) | 2018-05-21 | 2018-05-21 | Motor self-driven cooling structure based on cooling liquid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109921567A (en) * | 2019-05-06 | 2019-06-21 | 哈尔滨理工大学 | A kind of large synchronous compensator rotor rotation formula air-makeup system |
| CN110098695A (en) * | 2018-12-05 | 2019-08-06 | 涌镇液压机械（上海）有限公司 | Cylindric cooler construction |
| WO2022166546A1 (en) * | 2021-02-05 | 2022-08-11 | 海南极锐浩瀚动力系统科技有限公司 | High-speed air suspension compressor for fuel cell, fuel cell system and vehicle |
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