EP4259462A1 - Système de gestion thermique pour un véhicule et procédé de fonctionnement d'un système de gestion thermique - Google Patents

Système de gestion thermique pour un véhicule et procédé de fonctionnement d'un système de gestion thermique

Info

Publication number
EP4259462A1
EP4259462A1 EP21723178.6A EP21723178A EP4259462A1 EP 4259462 A1 EP4259462 A1 EP 4259462A1 EP 21723178 A EP21723178 A EP 21723178A EP 4259462 A1 EP4259462 A1 EP 4259462A1
Authority
EP
European Patent Office
Prior art keywords
coolant
pump
circuit
management system
coolant pump
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.)
Pending
Application number
EP21723178.6A
Other languages
German (de)
English (en)
Inventor
Sebastian TIEMEYER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hella GmbH and Co KGaA filed Critical Hella GmbH and Co KGaA
Publication of EP4259462A1 publication Critical patent/EP4259462A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow

Definitions

  • Thermal management system for a vehicle and method of operating a thermal management system
  • the present invention relates to a thermal management system for a vehicle of the type mentioned in the preamble of claim 1 and a method for operating a thermal management system.
  • thermal management systems for vehicles for example electric vehicles, and methods for their operation are already known from the prior art in numerous design variants and include, for example, a controller, a battery circuit connected to a drive battery of the electric vehicle in a heat-transferring manner, a battery circuit connected to an electric drive of the electric vehicle and/or a Power electronics for an electric drive, drive circuit connected in a heat-transferring manner, and an air-conditioning circuit connected in a heat-transferring manner to a vehicle interior of the electric vehicle, with the battery circuit and the drive circuit each being operable with a coolant and being able to be connected or disconnected to one another in a coolant-conducting manner by means of at least one controllable coolant valve, and on the other hand the air-conditioning circuit having a of the refrigerant different refrigerant is operable.
  • the object of the present invention is to improve a thermal management system for a vehicle and a method for its operation.
  • the terms “control” and “controllable” are to be interpreted broadly and also include regulations or combinations of a control and a regulation. Furthermore, this problem is solved by a method for operating a thermal management system according to claim 11.
  • the dependent claims relate to advantageous developments of the invention.
  • An essential advantage of the invention lies in the fact that a thermal management system for a vehicle and a method for its operation are improved. Due to the design of the thermal management system according to the invention and the method for its operation, the thermal management in a vehicle, for example an electric vehicle, can be implemented in a manner that is simple in terms of design and production technology. Furthermore, this enables a compact and therefore space-saving design, since, for example, fewer components, in particular fewer valves, have to be installed. The logistics and warehousing are simplified accordingly.
  • the thermal management system according to the invention can be freely selected for a vehicle in terms of type, mode of operation, material and dimensioning within wide, suitable limits.
  • thermo management system according to the invention for a vehicle provides that the aforementioned circulation of the coolant is essentially only in the first coolant circuit and/or the aforementioned circulation of the coolant in the first and the second coolant circuit in each case only by the automatic activation of the first coolant pump, the second coolant pump and the multi-way valve. This further simplifies the thermal management system according to the invention.
  • the thermal management system according to the invention provides that the first coolant circuit has a first flow section and a second flow section arranged fluidically parallel to the first flow section, the first flow section and the second flow section being fluidly connected to one another in every operating state of the thermal management system, and wherein the first flow section can be flow-connected directly to the second coolant circuit by means of the multi-way valve and the second flow section can be flow-connected directly to the first coolant pump by means of the multi-way valve.
  • the thermal management system according to the invention can be used even more flexibly in its use. This is because the first and second flow sections can be designed differently from one another and the coolant is conducted either through the first flow section and/or through the second flow section, depending on the requirements of the individual case.
  • the multi-way valve has a first connecting channel corresponding to the first flow section and the second coolant circuit with a first valve opening and a second connecting channel corresponding to the second flow section and the first coolant pump with a second valve opening.
  • the first and the second valve opening are arranged one above the other on the multi-way valve.
  • An advantageous development of one of the last two developments of the thermal management system according to the invention provides that when the first coolant pump is switched on and the second coolant pump is switched on, with a constant pump pressure of the first coolant pump and with increasing pump pressure of the second coolant pump, preferably linearly increasing pump pressure of the second coolant pump, a volume flow of the coolant through the second flow section decreases, preferably steadily decreases, and a volume flow of the coolant through the first flow section increases, preferably steadily increases.
  • a desired proportional distribution of the coolant to the first flow section and the second flow section can be implemented in a very simple manner in terms of circuitry and control technology. This applies in particular to the preferred embodiment of this development.
  • an advantageous development of the method according to the invention provides that when the first coolant pump is switched on and when the second coolant pump is switched on, with a constant pump pressure of the first coolant pump and with increasing pump pressure of the second coolant pump, preferably linearly increasing pump pressure of the second coolant pump, a volume flow of the coolant through the second flow section decreases, preferably decreases continuously, and a volume flow of the coolant through the first flow section increases, preferably increases continuously.
  • An advantageous development of the aforementioned development of the thermal management system according to the invention provides that with decreasing pump pressure of the first coolant pump, the volume flow of the coolant through the second flow section also decreases compared to a constant pump pressure of the first coolant pump. This provides an additional degree of freedom in the distribution of the coolant between the first and the second flow section, so that the coolant can be distributed even more flexibly between the first and the second flow section. Accordingly, an advantageous development of the method according to the invention provides that with decreasing pump pressure of the first coolant pump, the volume flow of the coolant through the second flow section additionally decreases compared to a constant pump pressure of the first coolant pump.
  • the thermal management system provides that the first coolant circuit is designed as a drive circuit connected in a heat-transferring manner to an electric drive of the electric vehicle and/or power electronics for an electric drive, and the second coolant circuit is designed as a battery circuit connected in a heat-transferring manner to a drive battery of a vehicle designed as an electric vehicle are/is.
  • the invention can be used very advantageously in electric vehicles in particular. This applies in particular to the aforementioned design of the first and second coolant circuits.
  • an air cooler preferably a radiator
  • an effective heat dissipation of the thermal management system according to the invention is made possible with at the same time low outlay in terms of design, production and circuitry. This applies in particular to the preferred embodiment of this development.
  • the thermal management system additionally has an air conditioning circuit connected in a heat-transferring manner to a vehicle interior of the vehicle, the air-conditioning circuit being heat-transferringly connectable to the first and/or the second coolant circuit.
  • the waste heat from the first and/or the second coolant circuit can be used beneficially for air conditioning the vehicle interior.
  • the total energy consumption of the vehicle is corresponding can be significantly reduced.
  • the aforementioned heat-transferring connection can be realized by means of common components of the first and/or second coolant circuit on the one hand and the air-conditioning circuit on the other.
  • the air conditioning circuit can be connected in a flow-conducting manner to the first and/or the second coolant circuit by means of the multi-way valve.
  • the air conditioning circuit can be flow-conductively connected to the first flow section by means of the multi-way valve.
  • the first coolant circuit, the second coolant circuit and the air conditioning circuit of the thermal management system according to the invention can be flow-connected by means of the multi-way valve to form a single, common coolant circuit.
  • FIG. 1 shows an exemplary embodiment of the thermal management system according to the invention for a vehicle for carrying out the method according to the invention in a procedural block diagram
  • FIG. 2 shows a diagram relating to the exemplary embodiment according to FIG. 1 , in which the volume flow through the first and the second flow section is shown as a function of the pump pressure of the first and the second coolant pump.
  • the thermal management system 2 is designed for an electric vehicle not shown in detail and includes a not shown Control, a first coolant circuit 4 with a first coolant pump 6, a second coolant circuit 8 with a second coolant pump 10 and a multi-way valve 12 closing each of the first and second coolant circuits 4, 8, with the first coolant pump 6, the second coolant pump 10 and the multi-way valve 12 can be controlled automatically by means of the controller, and the first coolant circuit 4 and the second coolant circuit 8 can be flow-connected to one another by means of the multi-way valve 12 depending on the activation of the multi-way valve 12 .
  • the first coolant circuit 4 is designed as a drive circuit connected in a heat-transferring manner to an electric drive of the electric vehicle and power electronics for the electric drive
  • the second coolant circuit 8 is designed as a battery circuit connected in a heat-transferring manner to a drive battery 16 of the vehicle designed as an electric vehicle.
  • the aforementioned electric drive and the aforementioned power electronics are shown here as a common symbol 14 .
  • the thermal management system 2 here also has an air conditioning circuit that is heat-transferringly connected to a vehicle interior (not shown), the air-conditioning circuit being heat-transferringly connectable to the first coolant circuit 4 and/or the second coolant circuit 8 .
  • the first coolant pump 6, the second coolant pump 10 and the multi-way valve 12 are designed and operable in such a way that they are coordinated with one another such that when the first coolant pump 6 is switched on and the second coolant pump 10 is switched off, a coolant (not shown) essentially circulates in the first coolant circuit 4 and that When the first coolant pump 6 is switched on and when the second coolant pump 10 is switched on, coolant circulates in the first coolant circuit 4 and in the second coolant circuit 8 , which is flow-conductingly connected to the first coolant circuit 4 by means of the multi-way valve 12 .
  • the first and second coolant circuits 4, 8 are only activated by the automatic activation of the first coolant pump 6, the second coolant pump 10 and the multi-way valve 12. This is explained in more detail below.
  • the first coolant circuit 4 has a first flow section 18 and a second flow section 20 arranged in parallel to the first flow section 18 in terms of flow, the first flow section 18 and the second flow section 20 being fluidly connected to one another in every operating state of the thermal management system 2, and the first Flow section 18 by means of the multi-way valve 12 directly to the second coolant circuit 8 and the second flow section 20 by means of the multi-way valve 12 directly to the first coolant pump 6 is fluidly connected.
  • the second flow section 20 is shown in broken lines in FIG. 1 for the sake of clarity.
  • the multi-way valve 12 has a first connecting channel 22, corresponding to the first flow section 18 and the second coolant circuit 8, with a first valve opening 26, and a second connecting channel 24, corresponding to the second flow section 20 and the first coolant pump 6, with a second valve opening 27, the first and the second valve opening 26, 27 on the multi-way valve 12 are arranged one above the other.
  • an air cooler 28 In the second flow section 20 of the first coolant circuit 4 there is arranged an air cooler 28 , namely a radiator, which is connected to the free environment in a heat-transferring manner.
  • the coolant When the first coolant pump 6 is switched on and the second coolant pump 10 is switched off, the coolant essentially circulates in the first coolant circuit 4, namely through the second flow section 20 and thus through the air cooler 28 designed as a radiator. This is the case because the flow resistance in the first Coolant circuit 4 via the second flow section 20, in spite of the air cooler 28, compared to the first and second coolant circuits 4, 8 fluidically interconnected by means of the multi-way valve 12 is significantly lower.
  • the coolant thus flows, starting from the first coolant pump 6, through the first coolant circuit 4 via the second flow section 20 and the air cooler 28 arranged therein by means of the second valve opening 27 and the second connecting channel 24 of the multi-way valve 12 directly back to the first coolant pump 6 See also Fig.
  • the coolant reaches the electric drive and the corresponding power electronics 14 in a heat-transfer connection.
  • the electric drive and the power electronics 14 can accordingly be cooled by means of the coolant, with the heat absorbed by the coolant then passing through the radiator Air cooler 28 is released to the free environment.
  • the coolant circulates in the first coolant circuit 4 and in the second coolant circuit 8, which is flow-conductingly connected to the first coolant circuit 4 by means of the multi-way valve 12.
  • the coolant therefore flows, starting from the first coolant pump 6, via the first flow section 18 through the first coolant circuit 4, then by means of the first valve opening 26 and the first connecting channel 22 of the multi-way valve 12 initially into the second coolant circuit 8 and is then conveyed in the second coolant circuit 8 by means of the second coolant pump 10 and finally by means of of the multi-way valve 12 transported back to the first coolant pump 6. See also FIG.
  • the coolant reaches a heat-transfer connection to the electric drive and the corresponding power electronics 14 on the one hand and a heat-transfer connection to the drive battery 16 on the other be cooled, the heat absorbed by the coolant can then be used to heat the drive battery 16.
  • the degree of cooling of the thermal management system 2 by means of the air cooler 28 and the degree of heating of the drive battery 16 can be adjusted. See Fig. 2 again.
  • first and/or the second coolant circuit 4, 8 in the present exemplary embodiment can also be connected in a heat-transferring manner to the air conditioning circuit, which is not shown, it is also possible to use the heat from the thermal management system 2 as an alternative or in addition to heating the to use the vehicle interior.
  • the thermal management 2 in the electric vehicle is implemented in a manner that is simple in terms of design and production technology. Furthermore, this enables a compact and therefore space-saving design, since, for example, fewer components, in particular fewer valves, have to be installed. The logistics and warehousing are simplified accordingly.
  • the invention is not limited to the present embodiment.
  • the invention can also be used advantageously in other electric vehicles.
  • the electric vehicle can in particular be a motor vehicle trade for road traffic.
  • the electric vehicle can be freely selected within wide suitable limits and can be designed, for example, as a vehicle with only an electric drive or as a vehicle with a so-called hybrid drive, ie an electric drive and an internal combustion engine.
  • the invention is not limited to the structural, manufacturing and circuitry details of the present exemplary embodiment.
  • the pump pressure of the first coolant pump can also be varied automatically by means of the controller as an alternative or in addition.
  • the volume flow of the coolant through the second flow section also decreases compared to a constant pump pressure of the first coolant pump.
  • the method according to the invention can provide in other embodiments of the invention that with decreasing pump pressure of the first coolant pump, the volume flow of the coolant through the second flow section additionally decreases compared to a constant pump pressure of the first coolant pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un système de gestion thermique (2) pour un véhicule, comprenant un dispositif de commande, un premier circuit de refroidissement (4) ayant une première pompe à eau (6), un second circuit de refroidissement (8) ayant une seconde pompe à eau (10), et une vanne à voies multiples (12) qui ferme chacun des circuits de refroidissement (4, 8) et peut être actionnée automatiquement au moyen du dispositif de commande, et le premier circuit de refroidissement (4) et le second circuit de refroidissement (8) peuvent être en communication fluidique l'un avec l'autre par l'intermédiaire de la vanne à voies multiples (12) en fonction de l'actionnement de la vanne à voies multiples (12) lorsque la première pompe à eau (6) est activée et que la seconde pompe à eau (10) est désactivée, un fluide de refroidissement circule sensiblement dans le premier circuit de refroidissement (4), et, lorsque la première pompe à eau (6) est activée et que la seconde pompe à eau (10) est activée, le fluide de refroidissement circule dans le premier circuit de refroidissement (4) et dans le second circuit de refroidissement (8), qui est en communication fluidique avec le premier circuit de refroidissement (4) au moyen de la vanne à voies multiples (12).
EP21723178.6A 2020-12-09 2021-04-28 Système de gestion thermique pour un véhicule et procédé de fonctionnement d'un système de gestion thermique Pending EP4259462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020132790 2020-12-09
PCT/EP2021/061156 WO2022122189A1 (fr) 2020-12-09 2021-04-28 Système de gestion thermique pour un véhicule et procédé de fonctionnement d'un système de gestion thermique

Publications (1)

Publication Number Publication Date
EP4259462A1 true EP4259462A1 (fr) 2023-10-18

Family

ID=75787067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21723178.6A Pending EP4259462A1 (fr) 2020-12-09 2021-04-28 Système de gestion thermique pour un véhicule et procédé de fonctionnement d'un système de gestion thermique

Country Status (4)

Country Link
US (1) US20230311616A1 (fr)
EP (1) EP4259462A1 (fr)
CN (1) CN116568537A (fr)
WO (1) WO2022122189A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5983187B2 (ja) * 2012-08-28 2016-08-31 株式会社デンソー 車両用熱管理システム
US9533551B2 (en) * 2015-03-16 2017-01-03 Thunder Power Hong Kong Ltd. Electric vehicle thermal management system with series and parallel structure
KR20200067008A (ko) * 2018-12-03 2020-06-11 현대자동차주식회사 6웨이 밸브 및 이를 포함한 차량용 열관리시스템

Also Published As

Publication number Publication date
WO2022122189A1 (fr) 2022-06-16
US20230311616A1 (en) 2023-10-05
CN116568537A (zh) 2023-08-08

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