EP4552177A1 - Baumaschine - Google Patents
BaumaschineInfo
- Publication number
- EP4552177A1 EP4552177A1 EP23740950.3A EP23740950A EP4552177A1 EP 4552177 A1 EP4552177 A1 EP 4552177A1 EP 23740950 A EP23740950 A EP 23740950A EP 4552177 A1 EP4552177 A1 EP 4552177A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic oil
- construction machine
- cooling
- battery
- cooler
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/40—Special vehicles
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the invention is based on the object of providing a construction machine with components to be cooled which has the most efficient cooling concept possible.
- the construction machine has a rechargeable battery and at least one electric drive with at least one electric motor, which is supplied with energy from the battery.
- the battery can be arranged in the construction machine, for example.
- the construction machine also has a hydraulic circuit in which hydraulic oil circulates.
- the construction machine also has at least one hydraulic drive, which is supplied from the hydraulic circuit.
- at least one hydraulic drive which is supplied from the hydraulic circuit.
- the construction machine further has a first cooling circuit for cooling the battery and the hydraulic oil, with at least some of the hydraulic oil circulating as coolant in the first cooling circuit.
- the portion of the hydraulic oil that serves as a coolant can be obtained, for example, from a suction return filter, as disclosed in WO 2013/045167 A2.
- the first cooling circuit has: a hydraulic oil pump for generating an adjustable volume flow of the part of the hydraulic oil, a first cooler with adjustable cooling capacity through which the part of the hydraulic oil flows, and a first heat exchanger connected downstream of the first cooler and which is thermally connected to the Battery is coupled and the part of the hydraulic oil flows through it.
- the cooling capacity of the first cooler can be adjusted, for example, by means of a fan that generates an adjustable cooling air flow by means of a variable fan speed.
- the first cooler can also be designed as a heat pump, for example.
- the first cooler can, for example, be arranged in/on a support leg of a self-propelled concrete pump.
- the construction machine further has: a battery temperature controller, which is designed to regulate a battery temperature to a predeterminable setpoint, wherein a manipulated variable of the battery temperature controller is a cooling capacity of the first cooler.
- the predeterminable setpoint of the battery temperature can be in the range of room temperature, for example.
- the construction machine further has: a hydraulic oil temperature controller, which is designed to regulate a hydraulic oil temperature to a predeterminable setpoint, wherein a manipulated variable of the hydraulic oil temperature controller is a volume flow of the portion of the hydraulic oil.
- the predeterminable target value of the hydraulic oil temperature can, for example, be in a range between 30 ° Celsius and 60 ° Celsius.
- the hydraulic oil temperature controller is parameterized more slowly than the battery temperature controller in order to avoid oscillations in the coupled control circuits as much as possible.
- the at least one electric drive for example in the form of an electric motor, is also cooled by means of the first cooling circuit.
- the construction machine has power electronics, for example in the form of a frequency converter, for controlling the at least one electric drive, the power electronics also being cooled by means of the hydraulic oil.
- the first cooling circuit has: a second cooler through which the portion of the hydraulic oil flows, and a second heat exchanger connected downstream of the second cooler, which is thermally coupled to the power electronics and through which the portion of the hydraulic oil flows.
- the construction machine has a second cooling circuit for cooling the power electronics, with a further portion of the hydraulic oil circulating as coolant in the second cooling circuit.
- the first cooling circuit has a bypass valve, which in a bypass switching position leads the portion of the hydraulic oil past the first heat exchanger, and in a cooling switching position, the portion of the hydraulic oil passes through the first heat exchanger.
- the bypass switching position can be effected, for example, by the battery temperature controller if the battery does not need to be cooled. Accordingly, the cooling switching position can be effected by the battery temperature controller when cooling of the battery is necessary.
- the construction machine is a concrete pump.
- FIG. 1 shows a high schematic of a construction machine with a first cooling circuit according to the invention for hydraulic and electric drives according to a first embodiment
- Fig. 2 shows a high schematic of a construction machine according to a further embodiment
- Fig. 3 shows a high schematic of a construction machine according to a further embodiment.
- Fig. 1 shows a highly schematic view of a construction machine 1000 in the form of a (car) concrete pump, having a rechargeable battery 1, an electric drive 2, which is powered by the battery 1, a hydraulic circuit 3, in which hydraulic oil 4 circulates, a hydraulic drive 5, which is supplied from the hydraulic circuit 3, and a first cooling circuit 6 for cooling the battery 1 and the hydraulic oil 4, with a portion of the hydraulic oil 4 circulating as coolant in the first cooling circuit 6.
- a portion of the hydraulic oil 4 circulating as coolant in the first cooling circuit 6.
- no other or different coolant is used.
- the first cooling circuit 6 has a hydraulic oil pump 7 for generating an adjustable volume flow of the portion of the hydraulic oil 4.
- the hydraulic oil pump 7 is, for example, a constant pump that is driven at an adjustable speed by means of an electric motor 16 to generate the adjustable volume flow.
- the speed of the electric motor 16 is the manipulated variable of the hydraulic oil temperature controller 11.
- the first cooling circuit 6 further has a first cooler 8 with an associated fan 14 with adjustable cooling capacity, with the part of the hydraulic oil 4 flowing through the first cooler 8.
- the cooling performance can be adjusted, for example, by setting a fan speed.
- the first cooling circuit 6 further has a first heat exchanger 9 connected downstream of the first cooler 8, which is thermally coupled to the battery 1 and through which the portion of the hydraulic oil 4 flows.
- the construction machine 1000 has a battery temperature controller 10, which is designed to regulate a battery temperature measured by means of a temperature sensor 23 to a predeterminable setpoint, with a manipulated variable of the battery temperature controller 10 being the cooling capacity of the first cooler 8.
- the construction machine 1000 further has a hydraulic oil temperature controller 11, which is designed to regulate a hydraulic oil temperature measured by means of a temperature sensor 24 to a predeterminable setpoint, wherein a manipulated variable of the hydraulic oil temperature controller 11 is a volume flow of the part of the hydraulic oil 4.
- the hydraulic oil temperature controller 11 is parameterized more slowly than the battery temperature controller 10, for example by appropriately selecting controller time constants, etc.
- the electric drive 2 is also cooled by means of the first cooling circuit 6, for example by thermally coupling a heat exchanger, not shown, to the electric drive 2, with the part of the hydraulic oil also flowing through this heat exchanger.
- the construction machine also has power electronics 12 for controlling the electric drive 2.
- the first cooling circuit 6 has a bypass valve 13, which in a bypass switching position leads the part of the hydraulic oil 4 past the first heat exchanger 9, and in a cooling switching position the part of the hydraulic oil 4 passes through the first heat exchanger 9.
- the battery temperature controller 10 can be deactivated in the bypass switching position of the bypass valve 13.
- the cooling capacity of the first cooler 8 can be set, for example, to a fixed value that is sufficient to cool the hydraulic oil. It is also conceivable that in this case the hydraulic oil temperature controller 11 influences the cooling performance of the first cooler 8 as a further manipulated variable.
- a defined hydraulic oil volume flow is conveyed from the hydraulic circuit 3 or a hydraulic oil tank 15 through the first (hydraulic oil) cooler 8 by means of the hydraulic oil pump 7.
- the first cooler 8 cools the hydraulic oil 4 to a temperature that is sufficiently below the desired battery temperature.
- the cooled hydraulic oil 4 is then passed through the battery 1 and cools it.
- the hydraulic oil flow is then directed back into the hydraulic system, for example into the tank 15, and cools the hydraulic oil 4, since the target battery temperature is significantly lower than that of the hydraulic system.
- the temperature levels of battery 1 and hydraulic oil 4 are controlled, for example, via two control circuits.
- the battery 1 is cooled via a first control circuit.
- the battery temperature is measured and compared with the target temperature. If the temperature is too high or too low, the cooling capacity of the first cooler 8 is adjusted accordingly, for example via the speed of the fan 14.
- the hydraulic oil 4 is cooled via a second control circuit.
- the temperature of the hydraulic oil 4 in the system/tank 15 is measured and compared with the target temperature. If the temperature is too high or too low, the cooling volume flow is adjusted accordingly.
- the volume flow of the portion of the hydraulic oil regulates the amount of cooled oil that flows back into the hydraulic system.
- the volume flow can be adjusted, for example, by means of an adjustable pump with a constant speed or, as shown, by means of a constant pump with a variable speed.
- control loops are linked to one another via the volume flow, it makes sense to coordinate the control loops.
- One variant is to make the hydraulic oil temperature control slower than the battery temperature control, for example to avoid vibrations.
- the entire system can also be equipped with a holistic control system in which the two temperatures plus setpoints serve as input variables and the volume flow and cooling capacity serve as output variables.
- the first cooling circuit 6 additionally has a second cooler 17 through which the portion of the hydraulic oil 4 flows.
- the first cooling circuit 6 further has a second heat exchanger 18 connected downstream of the second cooler 17, which is thermally coupled to the power electronics 12 and through which part of the hydraulic oil 4 flows in order to cool the power electronics 12.
- the second cooler 17 can have an adjustable cooling capacity.
- a temperature controller not shown, can be provided which regulates a temperature of the hydraulic oil 4 flowing out of the second cooler 17 to a setpoint.
- FIG. 3 shows a highly schematic view of a construction machine 1000 according to a further embodiment.
- the construction machine 1000 has a second cooling circuit 19 for cooling the power electronics 12, with a further portion of the hydraulic oil 4 circulating as coolant in the second cooling circuit 19.
- the second cooling circuit 19 has a further hydraulic oil pump 20, a third cooler 21 and a downstream second heat exchanger 22, which is thermally connected the power electronics 12 is coupled and through which the further part of the hydraulic oil 4 flows.
- a temperature of the power electronics 12 can be regulated, for example, by means of an associated temperature controller, which uses, for example, a delivery capacity of the further hydraulic oil pump 20 and/or a cooling capacity of the third cooler 21 as a manipulated variable.
- the number of physical components required for cooling can be reduced since there is no separate first cooling circuit for the battery. This also results in a simpler physical system structure. Furthermore, no additional cooling medium is necessary since only hydraulic oil is used.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fluid-Pressure Circuits (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022207009.7A DE102022207009A1 (de) | 2022-07-08 | 2022-07-08 | Baumaschine |
| PCT/EP2023/068174 WO2024008620A1 (de) | 2022-07-08 | 2023-07-03 | Baumaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4552177A1 true EP4552177A1 (de) | 2025-05-14 |
Family
ID=87245599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23740950.3A Withdrawn EP4552177A1 (de) | 2022-07-08 | 2023-07-03 | Baumaschine |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4552177A1 (de) |
| JP (1) | JP2025523640A (de) |
| KR (1) | KR20250036076A (de) |
| CN (1) | CN119547255A (de) |
| DE (1) | DE102022207009A1 (de) |
| WO (1) | WO2024008620A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001016827A (ja) * | 1999-06-30 | 2001-01-19 | Kobelco Contstruction Machinery Ltd | 建設機械 |
| DE102005045414B4 (de) | 2005-09-23 | 2018-07-05 | Linde Material Handling Gmbh | Arbeitsmaschine mit einem elektrischen Fahrmotor eines Fahrantriebs, einem elektrischen Pumpenmotor einer Arbeitshydraulik und einer Flüssigkeitskühlung |
| JP4457079B2 (ja) * | 2006-02-23 | 2010-04-28 | 株式会社竹内製作所 | 建設機械の冷却システム。 |
| DE102010062137A1 (de) | 2010-11-29 | 2012-05-31 | Mahle International Gmbh | Flüssigkeitsfördereinrichtung |
| DE102011083874A1 (de) | 2011-09-30 | 2013-04-04 | Putzmeister Engineering Gmbh | Hydrauliksystem mit Saug-Rücklauffilter |
| CN111755776B (zh) * | 2020-08-03 | 2025-08-29 | 上海三一重机股份有限公司 | 热管理系统及电动液压挖掘机 |
| CN114290869B (zh) * | 2021-12-03 | 2024-03-22 | 中联重科土方机械有限公司 | 车辆的热管理系统和挖掘机 |
-
2022
- 2022-07-08 DE DE102022207009.7A patent/DE102022207009A1/de not_active Ceased
-
2023
- 2023-07-03 WO PCT/EP2023/068174 patent/WO2024008620A1/de not_active Ceased
- 2023-07-03 EP EP23740950.3A patent/EP4552177A1/de not_active Withdrawn
- 2023-07-03 JP JP2025500210A patent/JP2025523640A/ja active Pending
- 2023-07-03 CN CN202380043308.1A patent/CN119547255A/zh active Pending
- 2023-07-03 KR KR1020247042189A patent/KR20250036076A/ko active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024008620A1 (de) | 2024-01-11 |
| CN119547255A (zh) | 2025-02-28 |
| JP2025523640A (ja) | 2025-07-23 |
| KR20250036076A (ko) | 2025-03-13 |
| DE102022207009A1 (de) | 2024-01-11 |
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