CN111997752B - Electric transmission engineering machinery power cabin and engineering machinery - Google Patents
Electric transmission engineering machinery power cabin and engineering machinery Download PDFInfo
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- CN111997752B CN111997752B CN202010923575.6A CN202010923575A CN111997752B CN 111997752 B CN111997752 B CN 111997752B CN 202010923575 A CN202010923575 A CN 202010923575A CN 111997752 B CN111997752 B CN 111997752B
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- 230000005540 biological transmission Effects 0.000 title description 6
- 238000001816 cooling Methods 0.000 claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 18
- 230000005855 radiation Effects 0.000 abstract description 14
- 108010066057 cabin-1 Proteins 0.000 description 12
- 108010066114 cabin-2 Proteins 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 238000009960 carding Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
- F02B63/044—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators the engine-generator unit being placed on a frame or in an housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The present disclosure relates to an electric drive engineering machinery power compartment, comprising: an engine compartment in which an engine and a generator are disposed; a cooling compartment, in which a cooling fan and a radiator module are arranged; the electric appliance cabin is arranged on one side of the engine cabin close to the cooling cabin, and a power battery pack and an electric control element are arranged in the electric appliance cabin; the electric appliance cabin and the engine cabin are mutually isolated from each other in air, and the electric appliance cabin is provided with a first air inlet grille used for introducing external air into the electric appliance cabin. The power cabin can improve the heat dissipation efficiency, reduce the heat radiation of electrical elements and keep the power cabin in a proper temperature range.
Description
Technical Field
The disclosure relates to the field of engineering machinery, in particular to an electric transmission engineering machinery power cabin and engineering machinery.
Background
The electric transmission engineering machine drives wheels to run by driving a motor with electric energy, realizes man-machine conversation by a sensor and an electric control system, and further omits a speed reducer, a differential mechanism and a mechanical control system.
Due to the influence of various factors such as the overall arrangement in the power cabin, the rotation effect of the heat dissipation module and the cooling fan blades, the flow state of cooling air in the power cabin becomes complex and difficult to control, which is very unfavorable for the normal operation of a radiator and even the whole cooling system, and further influences the output characteristic, the service life and even the safety of the power battery.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide an electric drive engineering machinery power cabin and an engineering machinery, which can improve heat dissipation efficiency, reduce heat radiation received by electrical components, and maintain the power cabin within a suitable temperature range.
In one aspect of the present disclosure, there is provided an electric drive work machine power pod comprising:
an engine compartment in which an engine and a generator are disposed;
a cooling compartment, in which a cooling fan and a radiator module are arranged; and
the electric appliance cabin is arranged on one side of the engine cabin close to the cooling cabin, and a power battery pack and an electric control element are arranged in the electric appliance cabin;
the electric appliance cabin and the engine cabin are mutually isolated from each other in air, and the electric appliance cabin is provided with a first air inlet grille used for introducing external air into the electric appliance cabin.
In some embodiments, the electric drive work machine power pod further comprises:
and the partition plate is arranged between the cooling cabin and the electric appliance cabin, and a plurality of through holes are formed in the area right opposite to the electric appliance cabin and used for realizing air circulation between the electric appliance cabin and the cooling cabin.
In some embodiments, the through-hole has an adjustable flow area, the appliance compartment further comprises a temperature sensor for measuring a temperature of the appliance compartment, the through-hole is configured to:
and adjusting the self flow area according to the temperature measurement value of the temperature sensor so as to maintain the temperature of the electric appliance cabin within a set temperature range.
In some embodiments, the electric drive work machine power pod further comprises:
the baffle can be attached to one side of the partition in a sliding manner, the through holes can be completely shielded at a first sliding position, and the through holes can be completely exposed at a second sliding position;
the driving mechanism is used for driving the baffle to move between the first sliding position and the second sliding position; and
a diaphragm controller communicatively coupled to the temperature sensor and the drive mechanism and configured to drive the movement of the shutter between the first sliding position and the second sliding position via the drive mechanism based on the temperature measurement.
In some embodiments, the partition controller is configured to: when the temperature measured value is higher than a first set temperature, the baffle is controlled to move to a second sliding position through the driving mechanism; and when the temperature measured value is lower than a second set temperature, controlling the baffle to move to a first sliding position through the driving mechanism.
In some embodiments, the drive mechanism comprises:
the gear is rotatably arranged on the baffle and is driven by the control motor; and
and one end of the rack is fixedly arranged on the baffle, the other end of the rack is meshed with the gear, and the rack can drive the baffle to move in the rotating process of the gear.
In some embodiments, the electrical equipment compartment includes a first sub-electrical equipment compartment and a second sub-electrical equipment compartment that are independent of each other, the first sub-electrical equipment compartment and the second sub-electrical equipment compartment are symmetrically located at left and right ends of one side of the engine compartment, which is close to the cooling compartment, and the first sub-electrical equipment compartment and the second sub-electrical equipment compartment are respectively provided with a first air inlet grille for respectively introducing external air into the first sub-electrical equipment compartment and the second sub-electrical equipment compartment.
In some embodiments, the left side, the right side and the top of the cooling chamber near one end of the partition plate are provided with second air inlet grilles for introducing external air into the cooling chamber.
In some embodiments, the cooling pod comprises:
a cooling fan;
the radiator is positioned in the direction of the air outlet of the cooling fan and used for radiating heat of an engine in an engine compartment;
a guide cover arranged outside the cooling fan for guiding the air flow entering the radiator; and
and the rectifying grid consists of a mesh plate, is fixedly arranged in the air guide sleeve, is positioned between the cooling fan and the radiator and is used for rectifying the airflow which flows from the cooling fan to the radiator.
In another aspect of the disclosure, a work machine is provided, comprising an electric drive work machine power pod as described in any of the previous embodiments.
Therefore, according to the embodiment of the disclosure, the power cabin is divided into an engine cabin, an electrical appliance cabin and a cooling cabin, and the air of the electrical appliance cabin is isolated from the engine cabin, so that the heat radiation of a heat source inside the engine cabin to electrical elements is avoided; a partition plate with a through hole is arranged between the electric appliance cabin and the cooling cabin, and the opening and closing of the through hole of the partition plate are controlled through a temperature signal, so that the electric appliance cabin is kept in a proper temperature range; the rectifier grids are arranged in the cooling cabin, cooling air flow flowing to the surface of the radiator is combed, uniformity of cooling air on the surface of the radiator is improved, and accordingly heat dissipation efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
FIG. 1 is an exploded schematic view of an electric drive work machine power pod according to some embodiments of the present disclosure;
FIG. 2 is a schematic diagram of an overall configuration of an electric drive work machine power pod, according to some embodiments of the present disclosure;
FIG. 3 is a schematic illustration of a configuration of one side of a bulkhead of an electric drive work machine power pod, according to some embodiments of the present disclosure;
FIG. 4 is a schematic illustration of the structure on the other side of the bulkhead of the power pod of the electric drive work machine according to some embodiments of the present disclosure;
FIG. 5 is a schematic illustration of a cooling pod of an electric drive work machine power pod, according to some embodiments of the present disclosure;
FIG. 6 is a schematic cooling airflow path for an electric drive work machine nacelle with the through-holes of the bulkhead closed according to some embodiments of the present disclosure;
FIG. 7 is a schematic cooling airflow path for an electric work machine power pod with through-holes of the bulkhead open according to some embodiments of the present disclosure.
In the figure:
1, an engine compartment; 11, an engine; 12, a generator; 2, cooling the cabin; 21, a second air inlet grille; 22, a cooling fan; 23, a heat sink; 24, a flow guide sleeve; 25, a rectifier grid; 3, an electric appliance cabin; 31, a first air intake grille; 32, a temperature sensor; 35, a power battery pack and 36, and an electric control element; 4, a partition board; 41, a through hole; 5, a baffle plate; 6, a driving mechanism; 61, a gear; 62, a rack; 7, a partition controller; a, a first cooling air flow; b, second cooling air flow.
It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
The applicant has found that the power battery pack of the electric power transmission engineering machinery currently concerned is usually arranged in a power compartment together with an engine. Because the ventilation and heat dissipation in the power cabin are poor, and the heat radiation influence of heat sources such as an engine and the like, the temperature distribution of the power battery is easily uneven. The working temperature of the power battery directly affects the output characteristic, the service life and even the safety of the power battery, and the temperature rise characteristic of the power battery mainly depends on factors such as the actual running condition, the environmental characteristic (such as temperature, wind speed and the like) and the health or aging state of the power battery besides the thermal mechanical characteristic of the power battery.
At present, the cooling of power batteries and related electric fittings mainly depends on air cooling: the continuous flow of cooling air and the removal of excess heat are key elements of the cooling system, and directly affect the heat dissipation effect of the cooling system. However, due to the factors such as the overall arrangement of the power compartment, the matching of the heat dissipation module, and the rotation effect of the cooling fan blades, the flow state of the cooling air becomes complicated and difficult to control, which is very unfavorable for the normal operation of the radiator and even the whole cooling system.
In view of this, the embodiments of the present disclosure provide an electric drive engineering machinery power cabin and an engineering machinery, which can improve heat dissipation efficiency, reduce heat radiation received by electrical components, and maintain the power cabin within a suitable temperature range.
1-2, in one aspect of the present disclosure, there is provided an electric drive work machine power pod, comprising:
an engine compartment 1 in which an engine 11 and a generator 12 are provided;
a cooling compartment 2 in which a cooling fan 22 and a radiator 23 module are installed; and
the electric appliance cabin 3 is arranged on one side of the engine cabin 1 close to the cooling cabin 2, and a power battery pack 35 and an electric control element 36 are arranged in the electric appliance cabin 3;
wherein the electrical compartment 3 is air isolated from the engine compartment 1, and the electrical compartment 3 is provided with a first air inlet grille 31 for introducing outside air into the electrical compartment 3.
Aiming at the technical problems that an independent electric appliance cabin 3 is lacked in the technical scheme of the power cabin in the related technology and the temperature of a power battery pack 35 and an electric appliance control element of the electric transmission engineering machinery cannot be regulated, the power cabin is divided into an engine cabin 1, an electric appliance cabin 3 and a cooling cabin 2, wherein the electric appliance cabin 3 is used for arranging the power battery pack 35 and the electric appliance control element and is independent of the engine cabin 1, and therefore direct heat transfer of a heat source in the engine cabin 1 to the electric appliance element is avoided.
The heat transfer mode of engine compartment 1 to electrical apparatus cabin 3 includes that thermal convection and heat radiation are two kinds, and to thermal convection, this application has prevented the air route of thermal convection through keeping apart electrical apparatus cabin 3 and engine compartment 1 air each other, and then has reduced the heat transfer to electrical apparatus cabin 3 through the thermal convection mode. For the heat radiation, the housing between the electrical cabin 3 and the engine cabin 1 is used as an intermediate component, and will receive the radiation heat from the engine cabin 1 before the electrical cabin 3, and since the thermal resistance of the heat conduction is much lower than that of the radiation, after receiving the heat, the housing between the electrical cabin 3 and the engine cabin 1 will preferentially transfer the energy to the housing of the engine cabin 1 connected with the housing through the heat conduction, thereby reducing the heat radiation energy from the engine cabin 1 received by the electrical cabin 3.
In addition, this application still is equipped with first air-inlet grille 31 between electrical apparatus cabin 3 and external environment to direct cooling airflow is introduced from external environment, no longer makes cooling airflow recooling electrical apparatus cabin 3 behind engine compartment 1 for the radiating rate of electrical apparatus cabin 3.
The heat of electrical apparatus cabin 3 derives from the heat transfer that self work generates heat and engine compartment 1, and the heat dissipation of electrical apparatus cabin 3 then includes self to the radiation heat dissipation of environment and through the convection heat dissipation of first air inlet grille 31, and in the engineering machine tool work process, the work of electrical apparatus cabin 3 and engine compartment 1 generates heat and is difficult to avoid, therefore this application is mainly based on the heat dissipation environment of electrical apparatus cabin 3 to the temperature control of electrical apparatus cabin 3.
Specifically, as shown in fig. 3 to 4, in order to form an airflow channel between the cooling compartment 2 and the electrical compartment 3, in some embodiments, the electric engineering machine power compartment further includes a partition plate 4 disposed between the cooling compartment 2 and the electrical compartment 3, and a plurality of through holes 41 are disposed in a region facing the electrical compartment 3 to realize air circulation between the electrical compartment 3 and the cooling compartment 2.
Further, in some embodiments, the flow area of the through hole 41 is adjustable, and the electrical compartment 3 further comprises a temperature sensor 32 for measuring the temperature of the electrical compartment 3, wherein the through hole 41 is configured to: the flow area of the temperature sensor 32 is adjusted so that the temperature of the electric compartment 3 is maintained within the set temperature range.
The through hole 41 with the adjustable circulation area and the first air inlet grille jointly form an airflow channel from the external environment to the electric appliance cabin 3 and then to the cooling cabin 2, the flow of cooling airflow entering the electric appliance cabin 3 can be controlled (indirectly influencing the environmental temperature in the electric appliance cabin 3) through the circulation area of the control through hole 41, the heat dissipation of the electric appliance cabin 3 is influenced by two links of convection heat transfer from the electric appliance cabin 3 and radiation heat transfer from the electric appliance cabin 3 to the environment, and then the temperature of the electric appliance cabin 3 is maintained within a set stable range.
In order to realize the adjustable flow area of the through hole 41, in some embodiments, the electric engineering machine power compartment further includes:
the baffle 5 is attached to one side of the partition plate 4 in a sliding manner, can completely shield the through holes 41 at a first sliding position, and can completely expose the through holes 41 at a second sliding position;
the driving mechanism 6 is used for driving the baffle 5 to move between a first sliding position and a second sliding position; and
and a barrier controller 7 communicatively coupled to the temperature sensor 32 and the drive mechanism 6 and configured to drive the shutter 5 between the first slide position and the second slide position via the drive mechanism 6 based on the temperature measurement.
The applicant also researches and discovers that the power battery has good charge-discharge characteristics at normal temperature, the charge-discharge duration of the power battery is shortened along with the reduction of temperature, and the phenomenon that the power battery cannot be charged or discharged even in the environment of lower than-20 ℃ occurs. The reason is that the ionic conductivity of the electrolyte is reduced along with the reduction of the temperature, the electrochemical reaction resistance is increased along with the reduction of the temperature, and the ohmic polarization, the concentration polarization and the electrochemical polarization are increased at low temperature, so that the phenomena that the charging and discharging time of the battery is short at low temperature, and even the battery can not be charged or discharged are shown. Correspondingly, under the high-temperature environment, the power battery has the problems of difficult heat dissipation, overhigh temperature and the like, and the long-term accumulation of heat caused by high temperature easily causes the melting and internal short circuit of a battery diaphragm, thereby causing the decline of the service life of the battery and the safety problem. It can be seen that too high or too low a temperature is very detrimental to the power cell.
In this regard, in some embodiments, the partition 4 controller is configured to: when the temperature measured value is higher than the first set temperature, the baffle 5 is controlled to move to a second sliding position through the driving mechanism 6; and controlling the baffle 5 to move to the first sliding position through the driving mechanism 6 when the temperature measured value is lower than the second set temperature.
When the baffle 5 moves to the second sliding position, the flow area of the through hole 41 is the largest, at this time, the airflow channel from the external environment to the electric appliance compartment 3 and then to the cooling compartment 2 is completely opened, and under the driving of the cooling fan 22, the air entering the electric appliance compartment 3 continuously takes away the heat of the electric appliance compartment 3 through thermal convection and thermal radiation and is discharged out of the power compartment, so that the temperature of the electric appliance compartment 3 returns to a normal value from an upper critical point, namely a first set temperature.
Correspondingly, when the baffle 5 moves to the first sliding position, the flow area of the through hole 41 is zero, and at this time, the airflow channel from the external environment to the electric appliance cabin 3 and then to the cooling cabin 2 is completely closed, the air entering the electric appliance cabin 3 is not driven by the cooling cabin 2 any more, the updating flow is slow, the temperature of the power cabin is gradually increased, and thus the temperature of the electric appliance cabin 3 returns to a normal value from a lower critical point, namely the second set temperature.
Further, in some embodiments, the drive mechanism 6 includes:
a gear 61 rotatably provided on the barrier 5 and driven by a control motor; and
one end of the rack 62 is fixedly arranged on the baffle 5, and the other end of the rack is meshed with the gear 61, so that the baffle 5 can be driven to move in the rotating process of the gear 61.
The gear 61 and the rack 62 may be selected from a ratchet gear 61 and a ratchet rack 62, so that the barrier 5 can be restricted in a set position to prevent the barrier 5 from moving reversely.
In some embodiments, the electrical compartment 3 includes a first sub-electrical compartment and a second sub-electrical compartment that are independent from each other, the first sub-electrical compartment and the second sub-electrical compartment are symmetrically located at the left end and the right end of the engine compartment 1 near the cooling compartment 2, and the first sub-electrical compartment and the second sub-electrical compartment are respectively provided with a first air inlet grille 31 for respectively introducing external air into the first sub-electrical compartment and the second sub-electrical compartment.
The first sub-electric appliance cabin and the second sub-electric appliance cabin which are separated can avoid heat concentration of the electric appliance cabin 3, can effectively enlarge the area of convective heat transfer, and improve the heat dissipation rate.
In some embodiments, the cooling compartment 2 is provided with second air-inlet grilles 21 at the left, right, and top portions thereof near one end of the partition 4 for introducing external air into the cooling compartment 2.
Considering the lack of flow-straightening devices for the cooling fans 22 of the associated power compartment, the poor uniformity of the cooling air over the surface of the radiator 23 causes the flow conditions of the cooling air in each radiator module to become complex and difficult to control, which is very detrimental to the proper functioning of the radiator 23 and thus of the entire cooling system.
As shown in fig. 5, in some embodiments, the cooling pod 2 includes:
a cooling fan 22;
a radiator 23 located in the direction of the air outlet of the cooling fan 22, for radiating heat of the engine 11 inside the engine compartment 1;
a guide cover 24 provided outside the cooling fan 22 for guiding the air flow entering the radiator 23; and
and a flow straightener 25, which is composed of a mesh plate, is fixedly disposed inside the pod 24, is located between the cooling fan 22 and the radiator 23, and is used for straightening the air flow passing from the cooling fan 22 to the radiator 23.
The radiator 23 can radiate heat from the engine 11 inside the engine compartment 1 by water cooling.
The flow straightener 25 can comb the cooling air flow flowing to the surface of the radiator 23, so that the uniformity of the cooling air on the surface of the radiator 23 is improved, and the heat dissipation efficiency of the power cabin is improved. In order to make the air flowing through the air flow straightener 25 more uniform, the air flow straightener 25 may be made of mesh or louver structure, depending on the specific structure of the heat sink 23.
In addition, the cooling fan 22 of the present application may be a blower fan, that is, the cooling fan 22 is disposed at the front end of the heat sink 23 and blows airflow to the surface of the heat sink 23 to dissipate heat. It is also possible to use a suction fan, that is, a cooling fan 22 is disposed at the rear end of the heat sink 23 to draw air flow to the surface of the heat sink 23 by suction force to dissipate heat.
As shown in fig. 6 to 7, when the through-holes 41 of the partition plate 4 are closed, only the first cooling air flow a enters the cooling compartment 2 from the second intake grill; when the through holes 41 of the partition plate 4 are opened, the second cooling air flow b enters the cooling compartment 2 from the first air inlet grille through the electric compartment 3, so that the heat dissipation rate of the power compartment is improved.
In another aspect of the disclosure, a work machine is provided, comprising an electric drive work machine power pod as in any of the previous embodiments.
Therefore, according to the embodiment of the disclosure, the power cabin is divided into the engine cabin 1, the electrical equipment cabin 3 and the cooling cabin 2, and the electrical equipment cabin 3 is isolated from the engine cabin 1 by air, so that heat radiation of a heat source inside the engine cabin 1 to electrical components is avoided; a partition plate 4 with a through hole 41 is arranged between the electric appliance cabin 3 and the cooling cabin 2, and the opening and closing of the through hole 41 of the partition plate 4 are controlled by temperature signals, so that the electric appliance cabin 3 is kept in a proper temperature range; the rectifier grids 25 are arranged in the cooling cabin 2, and are used for carding cooling air flow flowing to the surface of the radiator 23, so that the uniformity of cooling air on the surface of the radiator 23 is improved, and further the heat dissipation efficiency is improved.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (9)
1. An electric drive engineering machine power compartment, comprising:
an engine compartment (1) in which an engine (11) and a generator (12) are provided;
a cooling cabin (2) in which a cooling fan (22) and a radiator (23) module are arranged;
the electric appliance cabin (3) is arranged on one side, close to the cooling cabin (2), of the engine cabin (1), and a power battery pack (35) and an electric control element (36) are arranged inside the electric appliance cabin;
a partition plate (4) which is arranged between the cooling cabin (2) and the electric appliance cabin (3) and is provided with a plurality of through holes (41) in the area right opposite to the electric appliance cabin (3) for realizing the air circulation between the electric appliance cabin (3) and the cooling cabin (2);
the electric appliance cabin (3) and the engine cabin (1) are mutually isolated from each other by air, and the electric appliance cabin (3) is provided with a first air inlet grille (31) for introducing external air into the electric appliance cabin (3).
2. Electric engineering machine power pod according to claim 1, characterized in that the through hole (41) has an adjustable flow area, the electric pod (3) further comprising a temperature sensor (32) for measuring the temperature of the electric pod (3), the through hole (41) being configured to:
and adjusting the flow area of the temperature sensor (32) according to the temperature measurement value of the temperature sensor so as to maintain the temperature of the electric appliance cabin (3) within a set temperature range.
3. The electric drive work machine nacelle of claim 2, further comprising:
the baffle (5) is attached to one side of the partition plate (4) in a sliding manner, can completely shield the through holes (41) at a first sliding position, and can completely expose the through holes (41) at a second sliding position;
a driving mechanism (6) for driving the baffle (5) to move between the first sliding position and the second sliding position; and
a diaphragm (4) controller communicatively coupled to the temperature sensor (32) and the drive mechanism (6) and configured to drive the movement of the flapper (5) between the first slide position and the second slide position via the drive mechanism (6) based on the temperature measurement.
4. The electric work machine power pod according to claim 3, wherein the bulkhead (4) controller is configured to: when the temperature measured value is higher than a first set temperature, the baffle (5) is controlled to move to a second sliding position through the driving mechanism (6); and controlling the baffle (5) to move to a first sliding position through the driving mechanism (6) when the temperature measured value is lower than a second set temperature.
5. Electric drive work machine power pod according to claim 3, characterized in that the drive mechanism (6) comprises:
a gear (61) rotatably provided to the baffle (5) and driven by a control motor; and
and one end of the rack (62) is fixedly arranged on the baffle (5), the other end of the rack is meshed with the gear (61), and the rack can drive the baffle (5) to move in the rotating process of the gear (61).
6. The electric engineering machinery power compartment of claim 1, wherein the electric appliance compartment comprises a first sub electric appliance compartment and a second sub electric appliance compartment which are independent from each other, the first sub electric appliance compartment and the second sub electric appliance compartment are symmetrically positioned at the left end and the right end of one side of the engine compartment (1) close to the cooling compartment (2), and the first sub electric appliance compartment and the second sub electric appliance compartment are respectively provided with a first air inlet grille (31) for respectively introducing external air into the first sub electric appliance compartment and the second sub electric appliance compartment.
7. The electric drive engineering machinery power compartment according to claim 1, wherein the cooling compartment (2) is provided with second air intake grilles (21) at the left, right, and top portions thereof near one end of the partition (4) for introducing outside air into the cooling compartment (2).
8. Electric engineering machine power compartment according to claim 7, wherein the cooling compartment (2) comprises:
a cooling fan (22);
a radiator (23) located in the direction of the outlet of the cooling fan (22) and configured to radiate heat from the engine (11) inside the engine compartment (1);
a guide cover (24) disposed outside the cooling fan (22) for guiding an air flow entering the radiator (23); and
and the flow straightener (25) consists of a mesh plate, is fixedly arranged in the flow guide cover (24), is positioned between the cooling fan (22) and the radiator (23), and is used for rectifying the air flow which is circulated from the cooling fan (22) to the radiator (23).
9. A work machine comprising an electric drive work machine nacelle according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923575.6A CN111997752B (en) | 2020-09-04 | 2020-09-04 | Electric transmission engineering machinery power cabin and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923575.6A CN111997752B (en) | 2020-09-04 | 2020-09-04 | Electric transmission engineering machinery power cabin and engineering machinery |
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| CN111997752A CN111997752A (en) | 2020-11-27 |
| CN111997752B true CN111997752B (en) | 2021-09-03 |
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| CN202010923575.6A Active CN111997752B (en) | 2020-09-04 | 2020-09-04 | Electric transmission engineering machinery power cabin and engineering machinery |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054430A (en) * | 1998-08-05 | 2000-02-22 | Hitachi Constr Mach Co Ltd | Construction machine cooling device and battery protective cover |
| CN102725454A (en) * | 2010-01-19 | 2012-10-10 | 日立建机株式会社 | Cooling structure for construction machine |
| CN205768625U (en) * | 2016-05-31 | 2016-12-07 | 徐工集团工程机械有限公司 | Piggyback pod and engineering truck |
| CN108104944A (en) * | 2018-01-29 | 2018-06-01 | 深圳捷森电能装备有限公司 | A kind of container-type generating set |
-
2020
- 2020-09-04 CN CN202010923575.6A patent/CN111997752B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054430A (en) * | 1998-08-05 | 2000-02-22 | Hitachi Constr Mach Co Ltd | Construction machine cooling device and battery protective cover |
| CN102725454A (en) * | 2010-01-19 | 2012-10-10 | 日立建机株式会社 | Cooling structure for construction machine |
| CN205768625U (en) * | 2016-05-31 | 2016-12-07 | 徐工集团工程机械有限公司 | Piggyback pod and engineering truck |
| CN108104944A (en) * | 2018-01-29 | 2018-06-01 | 深圳捷森电能装备有限公司 | A kind of container-type generating set |
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| Publication number | Publication date |
|---|---|
| CN111997752A (en) | 2020-11-27 |
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