CN102926417A - Electric drive bulldozer and cooling device of electric drive bulldozer - Google Patents
Electric drive bulldozer and cooling device of electric drive bulldozer Download PDFInfo
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- CN102926417A CN102926417A CN2012104658317A CN201210465831A CN102926417A CN 102926417 A CN102926417 A CN 102926417A CN 2012104658317 A CN2012104658317 A CN 2012104658317A CN 201210465831 A CN201210465831 A CN 201210465831A CN 102926417 A CN102926417 A CN 102926417A
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- bulldozer
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Abstract
The invention discloses a cooling device of an electric drive bulldozer. The cooling device comprises an engine cooling device which is used for cooling mechanical heat source parts; the cooling device also comprises a circuit cooling device which is used for cooling electronic heat source parts. The circuit cooling device is added on the cooling device of the electric drive bulldozer on the basis of the existing engine cooling device, so that the electronic heat source parts of the electric drive bulldozer can be independently cooled, therefore, the cooling device is not only beneficial to intensifying the heat dissipation capability of the electronic heat source parts with a relative lower working temperature, and simultaneously, is beneficial to ensuring the heat dissipation reliability of the high temperature mechanical heat source parts, such as engine, and further, the cooling effect of the cooling device of the electric drive bulldozer is improved. In addition, the invention also discloses an electric drive bulldozer which comprises the cooling device.
Description
Technical field
The present invention relates to the cooling system technical field, particularly relate to the cooling unit that a kind of electricity drives bulldozer.In addition, the invention still further relates to a kind of electricity of above-mentioned cooling unit that comprises and drive bulldozer.
Background technology
Electricity drives bulldozer and uses generator and drive motors to replace gearbox and torque-converters in traditional hydraulic machine bulldozer in Bulldozer, and is obviously distinct with the drive mechanism of traditional bulldozer, correspondingly, cools off object and also has obvious difference.
The cooling object of traditional machine driving bulldozer mainly is the mechanical thermal source blocks such as motor, gearbox, side speed reducer and charge air cooler, coolant temperature is generally at 100 ° more than the C, its cooling system is to adopt motor to carry the water pump cooled engine basically, and hydraulic system is utilized the air cooling.And electricity drives the cooling object of bulldozer except the mechanical thermal source block of traditional bulldozer, also comprise the electrical type thermal source parts that operating temperature is relatively low, i.e. engine controller, drive motor controller, accessory power supply power model, drive motors, generator and the power inverter module that is built in generator; Wherein, the coolant temperature of engine controller and drive motor controller can not surpass 65 ° of C, and the coolant temperature of accessory power supply power model can not surpass 65 ° of C, and the coolant temperature of generator and drive motors is generally at 70 ° below the C.
The cooling unit of at present electricity driving bulldozer uses the cooling unit of traditional machine driving bulldozer that electrical type thermal source parts are cooled off, by upper description as can be known, the operating temperature of electrical type thermal source parts is lower, work requirements can only be reached reluctantly with traditional cooling unit, the application life of electrical type thermal source parts can be reduced to a certain extent.
Therefore, be necessary to design a kind of cooling unit that electricity drives bulldozer that is applicable to, can either guarantee that the heat radiation of mechanical thermal source block is reliable, can guarantee that also the heat radiation of electrical type thermal source parts is reliable, prolong the application life of electrical type thermal source parts.
Summary of the invention
The purpose of this invention is to provide the cooling unit that a kind of electricity drives bulldozer, this cooling unit can either guarantee that the heat radiation of mechanical thermal source parts is reliable, can guarantee that also the heat radiation of electrical type thermal source parts is reliable, thereby prolongs the application life of electrical type thermal source parts.Another object of the present invention provides a kind of electricity of above-mentioned cooling unit that comprises and drives bulldozer.
For solving the problems of the technologies described above, the invention provides the cooling unit that a kind of electricity drives bulldozer, comprise engine cooling apparatus, be used for cooling mechanical class thermal source parts; Also comprise the circuit cools device, be used for cooling electric subclass thermal source parts.
Preferably, described circuit cools device comprises pump motor, water pump and circuit cools device; Described pump motor drives described water pump and sucks cooling fluid, and described cooling fluid enters described circuit cools device heat radiation after cooling off described electrical type thermal source parts.
Preferably, described pump motor is the adjustable water pump motor, in order to regulate according to demand the flow of described water pump.
Preferably, described electrical type thermal source parts comprise engine controller, drive motor controller, accessory power supply power model, drive motors, generator, the power inverter module that is built in described generator and working hydraulic pressure oil cooler.
Preferably, the flow through flow direction of described electrical type thermal source parts of the cooling fluid of described circuit cools device is: engine controller and drive motor controller-accessory power supply power model-drive motors-generator-working hydraulic pressure oil cooler.
Preferably, between the cooling liquid outlet of described water pump and described engine controller, the described drive motor controller, between described engine controller, described drive motor controller and the described accessory power supply power model and be provided with temperature pick up between described drive motors and the described generator, for detection of the temperature of cooling fluid.
Preferably, described circuit cools device further comprises water tank, and described water tank is connected with the pipeline of described electrical type thermal source parts respectively by outlet conduit, and before the entry pipeline of described electrical type thermal source parts flap valve is set all.
Preferably, the radiator of water tank of described engine cooling apparatus and charge air cooler, and the circuit cools device of described circuit cools device becomes one side by side, and dispel the heat by cooling fan.
Preferably, described cooling fan is suction temperature control variable fan.
A kind of electricity drives bulldozer, comprises above-mentioned each described cooling unit.
Relative above-mentioned background technology, the cooling unit that electricity provided by the invention drives bulldozer comprises engine cooling apparatus, is used for cooling mechanical class thermal source parts; Also comprise the circuit cools device, be used for cooling electric subclass thermal source parts.Electricity provided by the invention drives the cooling unit of bulldozer on the basis of existing engine cooling apparatus, increased the circuit cools device, can the electrical type thermal source parts that electricity drives bulldozer independently be cooled off, the heat-sinking capability that not only is conducive to the relatively low electrical type thermal source parts of forced working temperature, simultaneously also be conducive to guarantee the heat radiation reliability of the high temperature mechanical thermal source blocks such as motor, can improve the cooling effect that electricity drives the bulldozer cooling unit; And carry out independent cooling for different thermal source parts, both guaranteed that the operating temperature of different heat sources parts in tolerance band separately, also can guarantee their operating efficiency and life-span.
A kind of preferred embodiment in, the cooling unit that described electricity drives bulldozer also comprises water tank, water tank is connected with the pipeline of described electrical type thermal source parts respectively by outlet conduit, and is provided with flap valve before the entry pipeline of described electrical type thermal source parts.By the setting of water tank, can regulate in real time the flow of cooling fluid in the cooling circuit, to satisfy according to the different needs of pump rotary speed difference to coolant rate.
In another preferred embodiment, the radiator of water tank of described engine cooling apparatus and charge air cooler, and the circuit cools device of described circuit cools device becomes one side by side, and dispel the heat by cooling fan.Become one owing to electricity is driven the radiator of cooling unit, so that the compact conformation of radiator not only is convenient to installation and the layout of complete machine, and can be saved the space.
Description of drawings
Fig. 1 is the principle schematic that electricity provided by the present invention drives the circuit cools device of bulldozer cooling unit;
Fig. 2 is liquid circulation and each parts connection diagram in the circuit cools device shown in Fig. 1.
The specific embodiment
Core of the present invention provides the cooling unit that a kind of electricity drives bulldozer, and this cooling unit can either guarantee that the heat radiation of mechanical thermal source parts is reliable, can guarantee that also the heat radiation of electrical type thermal source parts is reliable, thereby prolongs the application life of electrical type thermal source parts.Another core of the present invention provides a kind of electricity of above-mentioned cooling unit that comprises and drives bulldozer.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 and Fig. 2; Fig. 1 is the principle schematic that electricity provided by the present invention drives the circuit cools device of bulldozer cooling unit; Fig. 2 is liquid circulation and each parts connection diagram in the circuit cools device shown in Fig. 1.
In a kind of concrete embodiment, the cooling unit that electricity provided by the present invention drives bulldozer comprises engine cooling apparatus; Described engine cooling apparatus is used for the cooling of the mechanical thermal source parts such as motor.
The cooling unit structure that it is pointed out that machine driving bulldozer in described engine cooling apparatus and the prior art is similar, repeats no more here.
The cooling unit that described electricity drives bulldozer also comprises the circuit cools device; Described circuit cools device comprises pump motor 21, water pump 22 and circuit cools device 23; Described pump motor 21 is used for driving water pump 22 and sucks cooling fluid, water pump 22 drives liquid circulation, cooling fluid is cooled off the electrical type thermal source parts that electricity drives bulldozer through cooling line, the cooled high temperature coolant of each parts is entered circuit cools device 23 dispel the heat, described circuit cools device 23 is by cooling fan 30 heat radiations.
Be without loss of generality, drive bulldozer as example take a kind of electricity, its electrical type thermal source parts comprise engine controller, drive motor controller, accessory power supply power model 12, drive motors 13, generator 14, the power inverter module that is built in described generator 14 and working hydraulic pressure oil cooler 15; Wherein the number of drive motors 13 is two, and correspondingly, the number of drive motor controller also is two.In order to express easily, two drive motor controller and engine controller can be referred to as electric machine controller 11, below statement is consistent therewith, repeats no more.
Because it is different that electricity drives the operating temperature of each thermal source parts in the bulldozer, also different to the requirement of cooling heat dissipation, wherein the required chilling temperature of electrical type thermal source parts is lower, so circuit cools device and engine cooling apparatus need independently to control respectively.
Also need to consider the requirement of the coolant temperature of each electronic unit in the design of cooling line with when arranging, to determine the sequencing of each electronic unit series connection, i.e. the sequencing of each electronic unit cooling; Except this also needs to consider maximum heat dissipation capacity and the water resistance characteristic of each electronic unit, select suitable water pump and cooling line by corresponding calculating.In general, the large needs of water resistance characteristic of electronic unit dispel the heat first, but also need in practice to consider in conjunction with the other factorses such as position of each electronic unit.
Please refer to table 1, table 1 is the relevant parameter of above-mentioned each parts of electrical type thermal source.The water resistance characteristic of associative list 1 and each electrical type thermal source parts, can obtain the series sequence of each electronic unit as shown in Fig. 1 and Fig. 2, that is the flow direction of cooling fluid in the circuit cools device: two drive motors 13-of electric machine controller 11-accessory power supply power model 12-generator 14-working hydraulic pressure oil cooler 15; Among Fig. 1, the arrow of dotted line shows the flow direction of cooling fluid; Arrow among Fig. 2 in the cooling line has indicated the flow direction of cooling fluid, and wherein cooling line illustrates with hacures.
Here need to prove, although represent drive motors 13 and generator 14 with a module in Fig. 2, it flows to still as being introduced into drive motors 13 during coolant flow, after enter generator 14.
Table 1
| Component names | Quantity | Operating temperature/℃ | Coolant temperature/ |
| Engine controller | |||
| 1 | Electrical installation temperature-25-65 | ≤65 | |
| Drive motor controller | 2 | Electrical installation temperature-25-70 | ≤70 |
| |
1 | Winding temperature≤185 | ≤75 |
| Drive motors | 2 | Winding temperature≤185 | ≤75 |
| The accessory power |
1 | Electrical installation temperature-25-65 | ≤65 |
| The working hydraulic |
1 | The highest oil temperature is 85 | ≤75 |
During work, pump motor 21 drives water pump 22 and sucks cooling fluid, the cooling fluid cooling line of flowing through under the driving of water pump 22 is introduced into electric machine controller 11, comprise engine controller and two drive motor controller, it is cooled off, then the accessory power supply power model 12 of flowing through successively, drive motors 13 and generator 14, it is cooled off, last cooling fluid enters working hydraulic pressure oil cooler 15 it is cooled off, when cooling fluid is flowed through above-mentioned each electronic unit, temperature raises gradually, the cooling fluid that flows out from hydraulic oil cooler 15 reaches relatively-high temperature, the cooling fluid of high temperature finally enters circuit cools device 23 and dispels the heat by cooling fan 30, and the cooling fluid after the heat radiation flows into water pump 22 again, so constantly circulation.
Wherein, water pump 22 is used for separately the control circuit cooling circuit; Cooling fan 30 is provided with the fan governor (not shown), controls the rotating speed of cooling fan 30 by fan governor to satisfy the cooling needs under the different operating modes.Cooling fan 30 can be preferably suction temperature control variable fan.
Further, pump motor 21 can be selected the adjustable water pump motor, the mutual communication of its electric machine controller and fan governor, during specific works, first according to the temperature controlled water pump motor 21 in circuit cools loop regulating the flow of water pump 22, when the flow of water pump 22 reaches maximum, when cooling effect does not reach requirement yet, then accelerate the rotating speed of cooling fan 30 by fan governor, to satisfy cooling requirement.
Certainly, pump motor 21 also can be selected can not the mode pump motor, and at this moment, if when the temperature in circuit cools loop can not meet the demands, directly the rotating speed by fan governor control cooling fan 30 satisfies the cooling requirement in circuit cools loop.
Electricity provided by the present invention drives bulldozer and has set up the circuit cools device of independent control on the basis of available engine cooling unit, so that electricity being driven the electrical type thermal source parts of bulldozer cools off separately, can guarantee that cryoelectronic unit working in the permissive temperature scope separately, strengthen the heat-sinking capability of coolant cooling circuit, prolong the life-extending of cryoelectronic unit; Simultaneously also can guarantee the heat radiation reliability of mechanical thermal source parts, thereby improve the cooling effectiveness of whole cooling unit, guarantee that electricity drives functional reliability and the safety of bulldozer.
Can make further improvement to the cooling unit that above-mentioned electricity drives bulldozer.
Further, between the cooling fluid entrance of the cooling liquid outlet of water pump 22 and electric machine controller 11, between the cooling fluid entrance of the cooling liquid outlet of electric machine controller 11 and accessory power supply power model 12, being respectively arranged with temperature pick up 40(between the cooling fluid entrance of the cooling liquid outlet of drive motors 13 and generator 14 is shown among Fig. 1), described temperature pick up 40 is for detection of the state of temperature information of cooling fluid, and state of temperature information is passed to fan governor, so that fan governor is analyzed the coolant temperature of each node, and control the rotating speed of water pump 22 according to the circuit cools liquid status, thereby control the circulation rate of the cooling fluid in the whole circuit cools loop.
It is pointed out that the temperature pick up 40 between the cooling fluid entrance of the cooling liquid outlet that only indicated electric machine controller 11 among Fig. 2 and accessory power supply power model 12, two other temperature pick up 40 does not mark.
Further, can be with the radiator of water tank of circuit cools device 23 and engine cooling apparatus, the charge air cooler parallel connection becomes one, form integrated heat spreader 60(as shown in fig. 1), integrated heat spreader 60 dispels the heat by cooling fan 30 again, correspondingly, the integrated control of the fan governor of cooling fan 30, be that fan governor is to the temperature of radiator of water tank, the coolant temperature of the temperature of charge air cooler and circuit cools device 23 all is analyzed, thereby the rotating speed of control cooling fan 30 satisfies cooling requirement, and controls the circulation rate of cooling fluid in each cooling circuit by controlling pump rotary speed in each cooling circuit.Integrated heat spreader 60 the compact conformation that can make whole cooling unit is set, reduce the space and arrange.
Here need to prove, although the circuit cools device 23 of the radiator of engine cooling apparatus and circuit cools device becomes one, but be independent of each other between each radiator, respectively the cooling fluid that drives different cooling systems in the bulldozer from electricity cooled off.Wherein, integrated heat spreader 60 can be determined by the optimal design of heat Balance Calculation, windage calculating, Wind Coverage Calculation and radiator inside the size of its overall dimensions and cooling fan 30.
Further, described circuit cools device also is provided with water tank 50, described water tank 50 is connected with the pipeline of electric machine controller 11, accessory power supply power model 12, drive motors 13, generator 14 and water pump 22 respectively by outlet conduit 52, and being provided with flap valve 51(before the water inlet of above-mentioned each parts is shown among Fig. 2), be back to water tank 50 with the cooling fluid in the cooling line of avoiding connecting components.By the design of water tank 50 and pipeline thereof, whole circuit cools device can be regulated the flow of cooling fluid in the cooling circuit in real time, to satisfy according to the different demands of water pump 22 rotating speed differences to coolant rate.
Here need to prove, for the cooling line of distinguishing cooling fluid and the outlet pipeline of water tank, indicating hatched pipeline among Fig. 2 is cooling line, and the arrow among Fig. 2 in the cooling line represents the flow direction of cooling fluid, and the arrow at circuit cools device 23 and cooling fan 30 places represents the heat loss direction.
Except above-mentioned cooling unit, the invention also discloses a kind of electricity of above-mentioned cooling unit that comprises and drive bulldozer, the structure that this electricity drives other each several parts of bulldozer please refer to prior art, and this paper repeats no more.
Above electricity provided by the present invention is driven bulldozer and cooling unit is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. an electricity drives the cooling unit of bulldozer, comprising:
Engine cooling apparatus is used for cooling mechanical class thermal source parts;
It is characterized in that, also comprise:
The circuit cools device is used for cooling electric subclass thermal source parts.
2. electricity as claimed in claim 1 drives the cooling unit of bulldozer, it is characterized in that, described circuit cools device comprises pump motor, water pump and circuit cools device; Described pump motor drives described water pump and sucks cooling fluid, and described cooling fluid enters described circuit cools device heat radiation after cooling off described electrical type thermal source parts.
3. electricity as claimed in claim 2 drives the cooling unit of bulldozer, it is characterized in that, described pump motor is the adjustable water pump motor, in order to regulate according to demand the flow of described water pump.
4. electricity as claimed in claim 1 drives the cooling unit of bulldozer, it is characterized in that, described electrical type thermal source parts comprise engine controller, drive motor controller, accessory power supply power model, drive motors, generator, the power inverter module that is built in described generator and working hydraulic pressure oil cooler.
5. electricity as claimed in claim 4 drives the cooling unit of bulldozer, it is characterized in that, the flow through flow direction of described electrical type thermal source parts of the cooling fluid of described circuit cools device is: engine controller and drive motor controller-accessory power supply power model-drive motors-generator-working hydraulic pressure oil cooler.
6. electricity as claimed in claim 5 drives the cooling unit of bulldozer, it is characterized in that, between the cooling liquid outlet of described water pump and described engine controller, the described drive motor controller, between described engine controller, described drive motor controller and the described accessory power supply power model and be provided with temperature pick up between described drive motors and the described generator, for detection of the temperature of cooling fluid.
7. drive the cooling unit of bulldozer such as each described electricity of claim 1 to 6, it is characterized in that, described circuit cools device further comprises water tank, described water tank is connected with the pipeline of described electrical type thermal source parts respectively by outlet conduit, and before the entry pipeline of described electrical type thermal source parts flap valve is set all.
8. drive the cooling unit of bulldozer such as each described electricity of claim 1 to 6, it is characterized in that, the radiator of water tank of described engine cooling apparatus and charge air cooler, and the circuit cools device of described circuit cools device becomes one side by side, and dispel the heat by cooling fan.
9. electricity as claimed in claim 8 drives the cooling unit of bulldozer, it is characterized in that, described cooling fan is suction temperature control variable fan.
10. an electricity drives bulldozer, it is characterized in that, comprises such as each described cooling unit of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104658317A CN102926417A (en) | 2012-11-16 | 2012-11-16 | Electric drive bulldozer and cooling device of electric drive bulldozer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104658317A CN102926417A (en) | 2012-11-16 | 2012-11-16 | Electric drive bulldozer and cooling device of electric drive bulldozer |
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| CN102926417A true CN102926417A (en) | 2013-02-13 |
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| CN2012104658317A Pending CN102926417A (en) | 2012-11-16 | 2012-11-16 | Electric drive bulldozer and cooling device of electric drive bulldozer |
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Cited By (6)
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| CN104806742A (en) * | 2015-03-03 | 2015-07-29 | 郑州宇通客车股份有限公司 | Transmission with cooling system and car using system |
| CN105735387A (en) * | 2014-12-10 | 2016-07-06 | 天津建筑机械厂 | Auxiliary cooling device of dual-fuel bulldozer |
| CN106661862A (en) * | 2014-07-28 | 2017-05-10 | 日立建机株式会社 | Hybrid-type work machine |
| CN108407649A (en) * | 2018-03-29 | 2018-08-17 | 安徽江淮汽车集团股份有限公司 | A kind of fuel cell car control system and its control method |
| CN109404370A (en) * | 2018-11-27 | 2019-03-01 | 西南交通大学 | A kind of air-cooled cooling system of water-bath for model shielding machine circulating oil path |
| CN112431243A (en) * | 2020-10-28 | 2021-03-02 | 江苏大学 | Intelligent underwater bulldozer and cooling system thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112431243A (en) * | 2020-10-28 | 2021-03-02 | 江苏大学 | Intelligent underwater bulldozer and cooling system thereof |
| CN112431243B (en) * | 2020-10-28 | 2021-10-12 | 江苏大学 | Intelligent underwater bulldozer and cooling system thereof |
| WO2022088322A1 (en) * | 2020-10-28 | 2022-05-05 | 江苏大学 | Intelligent underwater bulldozer and cooling system thereof |
| GB2603428A (en) * | 2020-10-28 | 2022-08-03 | Univ Jiangsu | Intelligent underwater bulldozer and cooling system thereof |
| GB2603428B (en) * | 2020-10-28 | 2022-12-28 | Univ Jiangsu | Intelligent underwater bulldozer and cooling system thereof |
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Application publication date: 20130213 |