US20130140001A1 - Heating/cooling system for a battery of a motor vehicle, and operating method for the same - Google Patents

Heating/cooling system for a battery of a motor vehicle, and operating method for the same Download PDF

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Publication number
US20130140001A1
US20130140001A1 US13/691,825 US201213691825A US2013140001A1 US 20130140001 A1 US20130140001 A1 US 20130140001A1 US 201213691825 A US201213691825 A US 201213691825A US 2013140001 A1 US2013140001 A1 US 2013140001A1
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United States
Prior art keywords
heating
cooling circuit
cooling
valve
motor vehicle
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Abandoned
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US13/691,825
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English (en)
Inventor
Bernhard Mandl
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.)
Magna Steyr Fahrzeugtechnik GmbH and Co KG
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Steyr Daimler Puch Fahrzeugtechnik AG and Co KG
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Assigned to MAGNA STEYR FAHRZEUGTECHNIK AG & CO KG reassignment MAGNA STEYR FAHRZEUGTECHNIK AG & CO KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MANDL, BERNHARD
Publication of US20130140001A1 publication Critical patent/US20130140001A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • B60H1/004—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
    • 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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 relates to a motor vehicle that includes a first heating/cooling circuit having a heat source/sink arranged therein and a first pump, and a second heating/cooling circuit having a battery to be heated/cooled arranged therein and a second pump, and a method for operating such a motor vehicle.
  • a heating/cooling circuit for a battery such as, for example, a storage battery of a motor vehicle is known per se.
  • a battery such as, for example, a storage battery of a motor vehicle
  • high-power batteries of electric motor vehicles and hybrid motor vehicles are generally temperature-controlled so as to be operated in a temperature range which is advantageous for power delivery. Therefore, the battery is cooled when outside temperatures are high, and is heated when outside temperatures are low.
  • German Patent Publication No. DE 42 39 834 A1 discloses heating of a battery by way of a fuel-operated heater or an internal combustion engine.
  • the heating for the battery can be activated or deactivated by way of a valve.
  • a disadvantage to such a design is that a fuel-operated heater and an internal combustion engine provide a supply temperature of approximately between 75-85° C. and between 90-110° C. respectively, which, per se, is excessively high for the heating of the battery.
  • German Patent Publication DE 101 28 164 A1 furthermore discloses cooling of the battery by way of two separate cooling circuits.
  • a compressor, a condenser and an evaporator are situated in a first circuit, and the battery and a pump are situated in a second circuit.
  • the two circuits are coupled to one another by way of a heat exchanger.
  • the heat exchanger can be bridged by a bypass.
  • a disadvantage of this design is the relatively complex construction, which requires a heat exchanger for the coupling of the two cooling circuits.
  • Embodiments of the invention provide an enhanced heating/cooling system for a battery of a motor vehicle and an enhanced operating method for the same.
  • the battery should be temperature-controlled in as simple a manner as possible, without being damaged.
  • a motor vehicle includes at least one of the following: a first heating/cooling circuit having a heat source/sink arranged therein and a first pump, and a second heating/cooling circuit having a battery to be heated/cooled arranged therein and a second pump, whereby the heating/cooling circuits operatively and/or fluidically connected to each other by way of at least one valve such that the same liquid heat carrier flows through both heating/cooling circuits.
  • a method for operating a motor vehicle includes at least one of the following: a first heating/cooling circuit having a heat source/sink arranged therein and a first pump, and a second heating/cooling circuit having a battery to be heated/cooled arranged therein and a second pump, and whereby the heating/cooling circuits are connected to each other by way of at least one valve such that the same liquid heat carrier flows through both heating/cooling circuits.
  • a motor vehicle includes at least one of the following: a first heating/cooling circuit with a heat source/sink arranged therein and a first pump; a second heating/cooling circuit with a battery arranged therein and a second pump; and a valve configured to fluidically connect the first heating/cooling unit and the second heating/cooling circuit to each other such that a same fluid flows through the first heating/cooling unit and the second heating/cooling circuit in order to heat/cool the battery.
  • a motor vehicle includes at least one of the following: a first heating/cooling circuit through which a fluid flows; a heat source/sink provided in the first heating/cooling circuit; a second heating/cooling circuit through which the fluid flows; a battery provided in the second heating/cooling circuit, whereby the second heating/cooling is configured to heat/cool the battery via the fluid; and a valve configured to fluidically connect the first heating/cooling unit and the second heating/cooling circuit such that fluid flows through the first heating/cooling unit and the second heating/cooling circuit.
  • a method of operating a vehicle includes at least one of the following: providing the motor vehicle with a first heating/cooling circuit with a heat source/sink arranged therein, a second heating/cooling circuit with a battery arranged therein, and a valve configured to fluidically connect the first heating/cooling unit and the second heating/cooling circuit; and selectively switching the valve between an opened position and a closed position such that the battery is heated/cooled via the fluid through the first heating/cooling unit and the second heating/cooling circuit.
  • embodiments permit the heating/cooling circuits are operatively and/or fluidically connected to each other without need for a relatively voluminous and heavy heat exchanger. Instead, for the connection of the heating/cooling circuits, a relatively compact and lightweight valve is provided, as a result of which the motor vehicle can also be configured to be more lightweight and more compact.
  • the heat source may comprise, for example, a fuel-operated heater.
  • a fuel-operated heater already forms part of some motor vehicles, for example, as a standstill heater for heating a passenger compartment and/or an internal combustion engine.
  • the heat source may also, however, comprise an internal combustion engine.
  • Such an internal combustion engine is advantageously already part of some motor vehicles, for example, as a drive engine or as a range extender in electrically operated vehicles.
  • the waste heat generated during the operation of the internal combustion engine can be used for heating a battery. If both a range extender and also a fuel-operated heater are provided, the range extender need not be activated in order to heat the interior compartment, whereby quieter operation of the vehicle can be attained.
  • the heating of a battery is done using components which are already provided in the motor vehicle, thereby providing dual usage of the components.
  • the valve is designed as a mixing valve or as a cyclically operated switching valve, and the heat exchange between the first and second heating/cooling circuits is adjustable by way of the valve.
  • the supply temperature of a fuel-operated heater (approximately between 75-85° C.) or of an internal combustion engine (approximately between 90-110° C.) is excessively high to heat a battery without further measures.
  • the temperature of the heating medium at the battery should specifically be, where possible, no more than approximately 20° C. higher than the actual temperature of the battery.
  • a switching valve which is switched between an open position and a closed position in a cyclic manner, that is to say at relatively high frequency.
  • PWM pulse width modulation
  • the switching should take place so quickly that the thereby generated “blocks” of hot heat carrier passing from the first heating/cooling circuit and “blocks” of relatively cool heat carrier circulating in the second heating/cooling circuit arrive at the battery having been adequately mixed.
  • the heat carrier then thus has, at the battery, a homogeneous temperature or only temperature fluctuations that cannot cause damage to the battery.
  • the pump arranged in the second heating circuit can have an assisting action for this purpose.
  • a further advantage in the use of a switching valve is that a controller thereof needs to have only one digital output.
  • valve may, however, be designed as a proportional mixing valve.
  • An inflow from the first heating circuit into the second heating circuit is selectively adjustable by way of an actuating motor.
  • a pulse-width-modulated valve actuation device with digital output may then be dispensed with, but in general, for the actuation of a mixing valve, an analogue or PWM output of a controller connected to the mixing valve is necessary.
  • mixing valves for the stated application are, however, difficult to obtain, which then makes the use of a cyclically operated switching valve advantageous.
  • a heat exchanger and/or a reservoir, and/or a turbulence generator, and/or a long fluid line are/is provided in the second heating/cooling circuit between the valve and battery.
  • the heat exchanger serves, among other things, as a thermal mass.
  • the heat exchanger acts, as it were, as a damper. It is furthermore possible for the switching valve to be cycled with relatively low frequency (preferably ⁇ 1 Hz) without a stipulated maximum temperature at the battery being exceeded. The service life of the switching valve can thus be increased considerably. Advantages are however also obtained, owing to the damping by the thermal mass, when an analogue-controlled mixing valve is used. A regulation device for actuating the mixing valve, and the actuating motor of the mixing valve itself, need not exhibit very fast response. It is thus possible to install components which are of relatively simple construction and are thus also inexpensive.
  • a very similar effect can also be attained with a reservoir and/or a turbulence generator and/or a long fluid line.
  • a reservoir the incoming blocks of cool and hot water dwell for a certain period of time, and the temperatures thereof thus equalize.
  • a compensation vessel which is required in any case may, for example, be used for this purpose, which compensation vessel thus serves a dual purpose.
  • a turbulence generator mixing of the blocks can be obtained, and a long line acts in turn as a thermal mass, similarly to the heat exchanger.
  • the length of the fluid line is determined on the basis of the temperatures of the blocks of cool and hot water, the mass and flow speed of the blocks, the thermal mass of the line, and the tolerable temperature fluctuation at the battery. It is self-evidently possible for the stated measures to be used individually or in combination.
  • the heat exchanger prefferably be designed as a passive water/air heat exchanger.
  • the thermal mass of the passive heat exchanger has a damping action on temperature fluctuations of the heat carrier in the second cooling/heating circuit, but rather also that excess heat energy is dissipated to the environment.
  • the supply temperature from a fuel-operated heater or an internal combustion engine, which is itself excessively high, can thus be effectively lowered to a level suitable for the battery. Since the heating of the battery takes place predominantly at a standstill, an excess dissipation of heat can be kept within limits by way of a passive heat exchanger.
  • the heat exchanger is also particularly advantageous for the heat exchanger to be connected to a third cooling/heating circuit. It is preferable if, in a first operating state, the first and the second heating/cooling circuit are operatively and/or fluidically connected by way of the at least one valve, whereby a heat exchanger which is additionally provided in the second heating/cooling circuit and which is operatively and/or fluidically connected to a third heating/cooling circuit is deactivated. In a second operating state, the first and the second heating/cooling circuit are operatively and/or fluidically disconnected from one another by way of the at least one valve, whereby the additionally provided heat exchanger is activated.
  • the second heating circuit thus not only serves for heating the battery, but also for cooling the battery, and thus performs a dual function.
  • the heat exchanger acts as a thermal mass, resulting in considerably smaller temperature fluctuations of the heat carrier at the battery in particular when a cyclically operated switching valve is used.
  • the heat exchanger thus acts as a damper, and thus performs a dual function together with its cooling function.
  • the heat source is formed by an electric motor, and/or a generator, and/or an inverter, because in these cases, the supply temperature is generally considerably lower than the supply temperature of a fuel-operated heater or of an internal combustion engine.
  • the described problems associated with a relatively high supply temperature can be once again considerably alleviated in this way.
  • waste heat generated in any case by the stated assemblies can be used for heating the battery, without the fuel-operated heater additionally having to be activated.
  • a charging unit for the battery is arranged in the second heating/cooling circuit between the valve and the battery.
  • a battery charging unit for charging the battery from a fixed electricity network is often provided in a motor vehicle.
  • the battery charging unit can serve for actively heating the battery using the waste heat thereof or can serve as a damping thermal mass when the battery is heated by way of the heat source arranged in the first heating circuit. In this way, the battery charging unit performs multiple functions.
  • the motor vehicle includes a bypass fluid line which is situated parallel to the charging unit and at least one valve which is provided for conducting the heat exchanger selectively via the charging unit or via the bypass line.
  • the battery charging unit can be coupled out of the heating/cooling circuit, for example, when only the battery is to be cooled.
  • the first heating/cooling circuit is provided for heating/cooling and the third cooling/heating circuit is provided for cooling/heating a passenger compartment of the motor vehicle.
  • the heating/cooling circuits can be used for multiple functions, or already existing heating/cooling circuits for the air conditioning of a passenger compartment can also be utilized for controlling the temperature of the battery. In this way, the embodiments can be implemented in reality with relatively little outlay.
  • valve for operatively and/or fluidically connecting the first and the second heating/cooling circuit is arranged in the first heating/cooling circuit between a heat exchanger for heating/cooling the passenger compartment and the heat source.
  • the supply temperature for the second heating circuit can be lowered in this way.
  • an advantage of embodiments of the invention is that components already provided in a motor vehicle are used for the temperature control of the battery, and thus, serve a dual purpose. In this way, embodiments of the invention can be implemented in reality with relatively little outlay. At the same time, despite comprehensive functionality, the motor vehicle weight remains substantially constant. The benefit of embodiments of the invention is thus particularly pronounced.
  • the first circuit is a heating circuit and the third circuit is a cooling circuit.
  • Embodiments of the invention is, however, self-evidently also applicable analogously to systems in which the first circuit is formed as a cooling circuit and the third circuit is formed as a heating circuit.
  • the boundaries between cooling circuit and heating circuit are loosely defined, because in principle, it is merely the case that heat is transmitted from one location to another, and the designation “heating” or “cooling” is dependent substantially on the viewpoint of the observer.
  • FIG. 1 illustrates a block circuit diagram of an exemplary heating system for a battery of a motor vehicle.
  • FIG. 2 illustrates the heating system of FIG. 1 , but includes an additional cooling circuit.
  • FIG. 3 illustrates the heating system of FIG. 2 , but includes an additional cooling system for the drivetrain of the motor vehicle.
  • FIG. 4 illustrates the heating system of FIG. 3 , but includes a battery charging unit integrated into the heating/cooling circuit of the battery.
  • embodiments include a first heating/cooling circuit 1 with a heat source 2 arranged therein, and a first pump 3 , and a second heating/cooling circuit 4 with a battery 5 to be heated arranged therein and a second pump 6 .
  • the first heating circuit 1 and the second heating circuit 4 can be operatively and/or fluidically connected by way of a valve 7 such that the same liquid heat carrier flows through them.
  • the valve 7 is designed as a cyclically operated switching valve, whereby the heat exchange between the first and the second heating circuit 1 and 4 can be selectively adjusted.
  • the valve 7 may also be designed as a mixing valve.
  • the first heating circuit 1 further includes a check valve 8 which is arranged between the two connecting lines to the second heating circuit 4 , a heat exchanger 10 which is arranged in a passenger compartment 9 of a motor vehicle which includes the arrangement illustrated in FIG. 1 , and a compensation vessel 11 .
  • the function of the arrangement illustrated in FIG. 1 is now explained as follows.
  • heat is generated and transmitted to a liquid heat carrier, which liquid heat carrier is set in motion by the pump 3 and circulates anticlockwise in the first heating circuit 1 .
  • the heat source 2 may, for example, be designed as a fuel-operated heater and operated with a fuel which is also used for driving the motor vehicle, for example, gasoline, diesel or gas.
  • the passenger compartment 9 can now be heated, in a manner known per se, by way of the heat exchanger 10 .
  • the compensation vessel 11 arranged in the first heating circuit 1 is provided.
  • the first heating circuit 1 thus performs the function of a standstill heater, such as is known per se, for a motor vehicle.
  • the traction battery 5 should, for optimum functioning, be at a specific temperature. In particular, in the presence of low outside temperatures, the battery 5 can be heated for this purpose. It is a problem here that the fuel-operated heater 2 generally delivers a temperature too high for heating the battery 5 . For example, a fuel-operated heater 2 delivers a temperature of approximately between 75-85° C., whereas the temperature of the heating medium at the battery 5 should be, where possible, no more than approximately 20° C. higher than the battery temperature. The battery 5 , therefore, cannot be incorporated directly into the first heating circuit 1 . Instead, heat is extracted from the first heating circuit 1 and supplied to the second heating circuit 4 in a targeted manner by way of the valve 7 .
  • the switching valve 7 is switched in a cyclic manner, that is to say at a relatively high frequency, between the illustrated first valve position and the second valve position (not illustrated position).
  • a greater or lesser amount of heat can be extracted from the first heating circuit 1 and supplied to the second heating circuit 4 .
  • Such an operating mode of the switching valve 7 is known per se and is referred to as “pulse width modulation” (PWM).
  • PWM pulse width modulation
  • the supply of heat into the second heating circuit 4 can be influenced through corresponding actuation of the pump 3 and/or of the pump 6 .
  • the heat carrier In the first valve position, the heat carrier, driven by the pump 6 , circulates counter-clockwise in the second heating circuit 4 and is isolated from the first heating circuit 1 .
  • the first heating circuit 1 and the second heating circuit 4 are operatively and/or fluidically connected. Accordingly, the first valve position and the second valve position alternate with one another during operation.
  • the check valve 8 prevents the heat carrier from being forced by the pump 6 counter to the actual flow direction in the first heating circuit 1 .
  • the check valve 8 may also be dispensed with if a backward flow can be prevented by the pressure conditions prevailing here.
  • valve 7 is designed as a cyclically operated switching valve 7 . It is, however, likewise possible for a mixing valve to be provided instead of the cyclically operated switching valve 7 .
  • a pulse-width-modulated (PWM) valve actuation device with digital output may then be dispensed with, but in general, for the actuation of a mixing valve, an analogue or PWM output of a controller operatively and/or fluidically connected to the mixing valve is necessary.
  • PWM pulse-width-modulated
  • valve 7 is still arranged upstream of the heat exchanger 10 . It is, however, also alternatively possible for the valve 7 to be arranged downstream of the heat exchanger 10 .
  • the heat exchanger is then advantageously already cooled slightly, as a result of which the switching frequency of the switching valve 7 can be reduced.
  • the two connecting lines between the first heating circuit 1 and the second heating circuit 4 respectively, and the check valve 8 should in this case be arranged in the line portion A between the heat exchanger 10 and the fuel-operated heater 2 .
  • FIG. 2 illustrates an embodiment of an arrangement which includes a heat exchanger 12 is provided in the second heating circuit 4 between the valve 7 and the battery 5 , which heat exchanger is operatively and/or fluidically connected to a third cooling circuit 13 .
  • the third cooling circuit 13 includes a compressor 14 , a condenser 15 , a dryer 16 , a shut-off valve 17 , a thermostatic expansion valve 18 , and an evaporator 19 .
  • the mode of operation of the third cooling circuit 13 of the type is known per se and will therefore be only briefly outlined.
  • a refrigerant is compressed in the compressor 14 , liquefied in the condenser 15 , dried in the dryer 16 , and expanded by way of the expansion valve 18 .
  • the refrigerant evaporates with an absorption of heat at low temperature, and thus, cools the passenger compartment 9 .
  • the function of the third cooling circuit 13 thus corresponds to an air conditioning system, such as is known per se, for a motor vehicle.
  • the first heating circuit 1 and the second heating circuit 4 are operatively and/or fluidically connected by way of the valve 7 . Also, the heat exchanger 12 additionally provided in the second heating circuit 4 or the third cooling circuit 13 , is deactivated.
  • the first heating circuit 1 and the second heating circuits 4 are operatively and/or fluidically separated or otherwise disconnected from one another by way of the valve 7 . Also, the additionally provided heat exchanger 12 or the third cooling circuit 13 can be activated.
  • the second heating circuit 4 serves multiple operational functions.
  • the second heating circuit 4 is not only configured to heat the battery 5 , but also to cool the battery 5 .
  • the heat exchanger 12 serves multiple operational functions. For instance, in the heating mode, the heat exchanger 12 acts as a thermal mass, resulting in considerably smaller temperature fluctuations of the heat exchanger 12 at the battery in particular if a cyclically operated switching valve 7 is used. Additionally, in the heating mode, the heat exchanger 12 acts as a damper.
  • the branches of the third cooling circuit 13 can be individually selectively activated or selectively deactivated in order to cool the passenger compartment 9 and/or the battery 5 as required.
  • a reservoir, and/or a turbulence generator, and/or a fluid line (long in length) to be provided in order to keep the temperature fluctuations at the battery 5 low even in the case of a low cycle frequency at the switching valve 7 .
  • the incoming blocks of cool and hot water dwell for a certain period of time, and the temperatures thereof thus equalize.
  • a compensation vessel which is required in any case may, for example, be used for this purpose, which compensation vessel thus serves a dual purpose.
  • a turbulence generator mixing of the blocks can be obtained, as a result of which a homogenization of the temperature can be obtained even in the case of a relatively short dwell time of the heat carrier therein. Particularly good homogenization of the temperature is possible if the heat carrier is made turbulent in a reservoir.
  • the boundaries between a “turbulence generator” and a “reservoir” are loosely defined.
  • a long line may be provided upstream of the battery 5 , which long line has a similar action to the heat exchanger 12 .
  • the long line acts as a thermal mass, whereby likewise an equalization of the different temperatures of the heat carrier is attained. It is self-evidently possible for the stated measures to be used individually or in combination.
  • FIG. 3 illustrates an embodiment of an arrangement which includes a fourth cooling circuit 22 , in which a coolant circulates counter-clockwise and which is driven by a pump 23 .
  • a DC/DC converter 24 In the cooling circuit 22 there are arranged a DC/DC converter 24 , a DC/AC converter 25 , an electric motor 26 and a heat exchanger 27 .
  • a further DC/AC converter 28 and a generator 29 In a branch situated parallel to the DC/AC converter 25 and electric motor 26 , there are arranged a further DC/AC converter 28 and a generator 29 .
  • a compensation vessel 30 is additionally provided in the cooling circuit 22 .
  • the arrangement also includes a fifth cooling circuit 31 in which a pump 32 , an internal combustion engine 33 , a switching valve 34 and a heat exchanger 35 are arranged. In the region of the heat exchangers 27 and 35 , there is also provided a fan 36 .
  • the arrangement finally comprises a battery charging unit 37 with installed cooling fan.
  • the function of the arrangement illustrated in FIG. 3 is explained as follows.
  • the DC/DC converter 24 , the DC/AC converter 25 and the electric motor 26 serve for the drive of the vehicle, whereby the DC/AC converter 25 transforms, in a manner known per se, the direct-current voltage of the battery 5 into an alternating-current voltage required for the electric motor 26 which is usually in the form of a synchronous motor or asynchronous motor.
  • the DC/DC converter 24 converts the voltage of the batter 5 , which is generally a few hundred volts, into a low voltage (for example 12V) which is required for peripheral units such as actuating motors, entertainment systems, navigation systems, illumination and the like. It is pointed out at this juncture that, for improved clarity, the electrical connections are not shown in the figures.
  • the internal combustion engine 33 is operatively and/or mechanically coupled to the generator 29 , which charges the battery 5 by way of the DC/AC converter 28 when required, or supplies electrical energy to the electric motor 26 .
  • the internal combustion engine 33 thus forms a “range extender” such as is known per se.
  • the battery charging unit 37 is provided for charging the battery 5 from a fixed electricity network.
  • the assemblies are cooled, i.e., there temperature is reduced, to prevent overheating.
  • the DC/DC converter 24 , the DC/AC converter 25 , the electric motor 26 , the DC/AC converter 28 and the generator 29 are cooled by way of the heat exchanger 27 (cooling circuit 22 ).
  • the fan 36 may be activated for enhanced cooling power as required.
  • the internal combustion engine 33 is cooled by way of the heat exchanger 35 (cooling circuit 31 ), whereby likewise, the fan 36 may be activated for improved cooling power.
  • the switching valve 34 is provided which conducts the heat carrier initially only via the pump 32 and the internal combustion engine 33 and then later also via the heat exchanger 35 .
  • the waste heat of the internal combustion engine 33 is also conducted via the heat exchanger 10 , whereby the passenger compartment 9 can be heated, in a manner known per se, by way of the internal combustion engine 33 .
  • the waste heat of the internal combustion engine 33 may also be conducted via the battery 5 in order to heat the battery 5 as required.
  • the heat source for heating the battery 5 is thus in this case formed by the internal combustion engine 33 .
  • additional check valves 38 and 39 are also provided in the arrangement illustrated in FIG. 3 . With suitable arrangement of the branching points, the check valves 38 and/or 39 may be dispensed with if a backward flow can be prevented by the pressure conditions prevailing here.
  • FIG. 4 illustrates an embodiment of an arrangement in which the battery charging unit 37 does not have an installed fan but rather is integrated into the second heating/cooling circuit 4 .
  • the battery charging unit 37 is arranged between the valve 7 and the battery 5 .
  • a bypass line which is situated parallel to the charging unit 37
  • a valve 40 which is provided for conducting the heat carrier selectively via the charging unit 37 or via the bypass line.
  • the charging unit 37 can be cooled by way of the heat exchanger 12 (or by way of an air/coolant heat exchanger which is arranged in the second heating/cooling circuit 4 but which is not illustrated in FIG. 4 ).
  • the charging unit 37 may additionally also serve as a heat source for heating the battery 5 and also the passenger compartment 9 .
  • the charging unit also serves as a thermal mass when the battery 5 is heated by way of the fuel-operated heater 2 or the internal combustion engine 33 , such that the temperature fluctuations of the heat exchanger caused by the switching of the valve 7 are substantially compensated. In this way, the battery charging unit 37 performs multiple functions.
  • the battery charging unit 37 can be operatively and/or fluidically disconnected from the second heating/cooling circuit 4 , for example, if only the battery 5 but not the battery charging unit 37 is to be cooled.
  • the thermal mass of the heat exchanger (“chiller”) 12 which is often provided in any case in a cooling circuit 4 for cooling the battery 5
  • a battery charging unit 37 which is generally likewise provided on board a vehicle
  • the first circuit 1 is a heating circuit and the third circuit 13 is a cooling circuit.
  • Such embodiments are not limited to such a design, and thus, are also applicable analogously to systems in which the first circuit 1 is formed as a cooling circuit and the third circuit 13 is formed as a heating circuit.
  • the boundaries between cooling circuit and heating circuit are loosely defined, because for example, the circuit 31 cools the internal combustion engine 33 but heats the heat exchanger 10 and the battery 5 .
  • the expression “cooling/heating circuit” can generally be used for the circuits 1 , 4 , 13 , 22 and 31 .
  • the amount of heat or thermal power transferred can also be influenced, in a manner known per se, by variation of the power of the pumps 3 , 6 and 32 that are used, of the compressor 14 , and of the fan 36 .
  • the power of the pumps 3 , 6 and 32 that are used, of the compressor 14 , and of the fan 36 can be varied, in a manner known per se, by variation of the power of the pumps 3 , 6 and 32 that are used, of the compressor 14 , and of the fan 36 .
  • virtually all of the waste heat of the internal combustion engine 33 can be used if the fan 36 is deactivated and the pump 32 runs at full power, etc.
  • the heat exchanger 12 is an evaporator/chiller.
  • the heat exchanger 12 may also be a passive heat exchanger, in particular, a water/air heat exchanger with cooling fins exposed to the environment.
  • the heat exchanger 27 and/or 35 can also be operatively and/or fluidically connected to the second cooling/heating circuit 4 , preferably by way of a switching valve analogous to the valve 40 .
  • the excessively high supply temperature of, for example, between 90 to 110° C. of the internal combustion engine 33 can thus be lowered in an effective manner to a level suitable for the battery 5 . Since the heating of the battery 5 takes place predominantly at a standstill, an excessive dissipation of heat by a passive heat exchanger can however be kept within limits.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)
  • Air-Conditioning For Vehicles (AREA)
US13/691,825 2011-12-01 2012-12-02 Heating/cooling system for a battery of a motor vehicle, and operating method for the same Abandoned US20130140001A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20110191472 EP2599651A1 (de) 2011-12-01 2011-12-01 Heiz-/Kühlsystem für eine Batterie eines Kraftfahrzeugs sowie Betriebsverfahren hierfür
EP11191472.7 2011-12-01

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JP2020102377A (ja) * 2018-12-21 2020-07-02 本田技研工業株式会社 温度調整回路及びその制御方法
JP6886960B2 (ja) * 2018-12-21 2021-06-16 本田技研工業株式会社 温度調整回路及びその制御方法
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US20130146251A1 (en) * 2010-06-17 2013-06-13 Valeo Systemes Thermiques Heat Conditioning System For A Motor Vehicle
US9803896B2 (en) * 2010-06-17 2017-10-31 Valeo Systemes Thermiques Heat conditioning system for a motor vehicle
US20150337776A1 (en) * 2013-02-25 2015-11-26 Renault S.A.S. Method and device for heating fuel for an internal combustion engine
US9719442B2 (en) * 2013-02-25 2017-08-01 Renault S.A.S Method and device for heating fuel for an internal combustion engine
DE102014201361A1 (de) * 2014-01-27 2015-07-30 Robert Bosch Gmbh Vorrichtung und Verfahren zum Temperieren eines elektrischen Energiespeichers eines Fahrzeugs
US10535907B2 (en) 2014-01-27 2020-01-14 Robert Bosch Gmbh Device and method for controlling the temperature of an electric energy store of a vehicle
EP2923867A1 (en) * 2014-03-28 2015-09-30 Tofas Turk Otomobil Fabrikasi Anonim Sirketi A cabin and battery heating system
US10259286B2 (en) * 2014-08-19 2019-04-16 Renault S.A.S. Device for controlling the temperature of a battery, comprising an evaporator for cooling the battery and a radiator for heating the battery
US20170282676A1 (en) * 2014-08-19 2017-10-05 Renault S.A.S. Device for controlling the temperature of a battery, comprising an evaporator for cooling the battery and a radiator for heating the battery
US20160169083A1 (en) * 2014-12-15 2016-06-16 Magna Steyr Fahrzeugtechnik Ag & Co Kg Method for initial filling of cooling circuits and vehicle
US20160226343A1 (en) * 2015-01-31 2016-08-04 Audi Ag Method of operating a drive device for a motor vehicle, and corresponding drive device
DE102015001184B4 (de) 2015-01-31 2023-11-23 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung für ein Kraftfahrzeug sowie entsprechende Antriebseinrichtung
CN107425231A (zh) * 2016-04-27 2017-12-01 福特全球技术公司 牵引电池热管理方法与系统
US10926645B2 (en) * 2016-07-28 2021-02-23 Robert Bosch Gmbh Temperature control device, battery system, controller and method for heating a battery
US20180072130A1 (en) * 2016-09-13 2018-03-15 Hyundai Motor Company Heat pump system for vehicle
US10173491B2 (en) * 2016-09-13 2019-01-08 Hyundai Motor Company Heat pump system for vehicle
WO2019020639A1 (de) * 2017-07-27 2019-01-31 Lion Smart Gmbh Temperiervorrichtung für eine temperierung eines batteriesystems, batteriesystem sowie verfahren zum temperieren und/oder löschen eines batteriesystems
CN110892576A (zh) * 2017-07-27 2020-03-17 莱昂智能有限公司 用于电池系统调温的调温装置、电池系统以及用于电池系统的调温和/或灭火的方法
US11557801B2 (en) 2017-07-27 2023-01-17 Lion Smart Gmbh Temperature control device for temperature control of a battery system, battery system and method for temperature control and/or extinguishing of a battery system
US20190152343A1 (en) * 2017-11-17 2019-05-23 Aisin Seiki Kabushiki Kaisha Vehicular heat exchange device
US10829005B2 (en) * 2017-11-17 2020-11-10 Aisin Seiki Kabushiki Kaisha Vehicular heat exchange device
CN110828932A (zh) * 2018-08-14 2020-02-21 马勒国际有限公司 用于电动车辆或混合动力车辆的储能设备
CN112601672A (zh) * 2018-08-29 2021-04-02 麦格纳国际公司 具有与电动车辆的舱室模块热耦合的模块化增程器
EP3817933A4 (en) * 2018-08-29 2021-10-13 Magna International Inc THERMALLY-COUPLED MODULAR RANGE EXTENSION MODULE WITH A PASSENGER MODULE OF AN ELECTRIC VEHICLE
US11845318B2 (en) 2018-08-29 2023-12-19 Magna International Inc. Modular range extender having thermal coupling with a cabin module of an electric vehicle
US11731483B2 (en) 2018-12-21 2023-08-22 Honda Motor Co., Ltd. Temperature adjustment circuit
DE102020207927A1 (de) 2020-06-25 2021-12-30 Vitesco Technologies GmbH Kraftfahrzeug Wärmetransportmittelkreislauf
US20220134866A1 (en) * 2020-11-02 2022-05-05 Audi Ag Motor vehicle and method for operation of a cooling device
US11850934B2 (en) * 2020-11-02 2023-12-26 Audi Ag Motor vehicle and method for operation of a cooling device
CN113090490A (zh) * 2021-03-30 2021-07-09 中山大洋电机股份有限公司 具有管路分配功能的水泵及燃料电池系统和控制方法
WO2024052021A1 (de) * 2022-09-08 2024-03-14 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum betreiben eines kraftfahrzeugs und kraftfahrzeug

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JP2013254725A (ja) 2013-12-19

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