EP4422893A1 - Procédé de contrôle d'un dispositif de gestion thermique - Google Patents
Procédé de contrôle d'un dispositif de gestion thermiqueInfo
- Publication number
- EP4422893A1 EP4422893A1 EP22800206.9A EP22800206A EP4422893A1 EP 4422893 A1 EP4422893 A1 EP 4422893A1 EP 22800206 A EP22800206 A EP 22800206A EP 4422893 A1 EP4422893 A1 EP 4422893A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transfer fluid
- temperature
- heat
- heat exchanger
- heat transfer
- 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
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 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 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
- B60H1/32281—Cooling devices using compression characterised by refrigerant circuit configurations comprising a single secondary circuit, e.g. at evaporator or condenser side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- 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 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
Definitions
- the invention relates to the field of electric and hybrid motor vehicles and more particularly to a method for managing a thermal management device for such a motor vehicle.
- a thermal management device comprising a circuit for circulating a refrigerant fluid.
- This refrigerant circuit generally comprises a compressor, a condenser placed in an external air flow, an expansion device and an evaporator placed in an internal air flow intended for the passenger compartment.
- This refrigerant circuit can thus cool the internal air flow in a cooling mode in order to ensure optimum comfort for the occupants of the passenger compartment.
- the refrigerant circuit can also be more complex and allow operation in a heat pump mode in order to heat the internal air flow.
- the refrigerant circuit then generally comprises a heat exchanger generally called a cooler as well as an expansion device.
- This cooler can in particular be connected jointly to a heat transfer fluid circuit comprising various heat exchangers allowing the thermal management of elements such as the batteries as well as power and/or engine electronics.
- One of the aims of the present invention is therefore to at least partially remedy the drawbacks of the prior art and to propose a method for managing improved thermal properties of the batteries, especially when the latter are at low temperatures.
- the present invention therefore relates to a method for managing a thermal management device for an electric or hybrid motor vehicle, said thermal management device comprising a heat transfer fluid circulation circuit comprising
- a first loop comprising a first heat exchanger configured to exchange heat with the batteries of the electric vehicle, and a cooler connected jointly to a refrigerant circulation circuit, said cooler being configured to allow heat exchanges between the circuit heat transfer fluid circulation circuit and the refrigerant fluid circulation circuit,
- a second loop comprising a second heat exchanger configured to exchange heat with the power electronics and/or motor of the electric vehicle, and a radiator configured to cool the heat transfer fluid
- said first and second loops being configured to allow independent circulation of the heat transfer fluid in each of the loops and/or a joint circulation, in operation, when the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger is lower than a first temperature value Tl, said first temperature value being lower at a maximum operating temperature Tmax_bat of the batteries, and when the temperature Tmel_out of the heat transfer fluid at the outlet of the second heat exchanger is greater than said first temperature value Tl, then the heat transfer fluid of the second loop at the outlet of the second heat exchanger is redirected to the first loop and the first heat exchanger so as to store heat in the batteries.
- the heat exchanges between the heat transfer fluid circulation circuit and the refrigerant circulation circuit are blocked.
- Figure 1 is a schematic representation of a thermal management device according to a first embodiment
- Figure 2 is a schematic representation of the thermal management device of Figure 1 according to a first mode of operation
- FIG. 3 is a schematic representation of the thermal management device of Figure 1 according to a first alternative mode of operation
- Figure 4 is a schematic representation of the thermal management device of Figure 1 according to a second mode of operation
- FIG. 5 is a schematic representation of the thermal management device of Figure 1 according to an alternative to the second mode of operation
- FIG. 6 is a schematic representation of the thermal management device of Figure 1 according to a third mode of operation
- FIG. 7 is a schematic representation of the thermal management device of Figure 1 according to an alternative to the third mode of operation
- Figure 8 is a schematic representation of the thermal management device of Figure 1 according to a fourth mode of operation
- Figure 9 is a schematic representation of the thermal management device of Figure 1 according to a fifth mode of operation
- FIG 10 Figure 10 is a schematic representation of the thermal management device of Figure 1 according to a sixth mode of operation
- Figure 11 is a schematic representation of a thermal management device according to a second embodiment.
- first element or second element As well as first parameter and second parameter or even first criterion and second criterion, etc.
- it is a simple indexing to differentiate and name elements or parameters or criteria that are close, but not identical. This indexing does not imply a priority of one element, parameter or criterion over another and such denominations can easily be interchanged without departing from the scope of the present description. Nor does this indexing imply an order in time, for example, to assess such and such a criterion.
- placed upstream means that one element is placed before another with respect to the direction of flow of a fluid.
- placed downstream means that one element is placed after another in relation to the direction of fluid circulation.
- FIG. 1 shows a schematic representation of an example of thermal management device 1 for an electric or hybrid motor vehicle according to a first embodiment.
- This thermal management device 1 comprises a circulation circuit for a heat transfer fluid A comprising a first Al and a second A2 loops.
- the first loop Al comprises in particular a first heat exchanger 5 configured to exchange heat with the batteries of the electric vehicle, and a cooler 4 connected jointly to a refrigerant circulation circuit B. , all of the electrical storage elements allowing the electrical supply of the electric vehicle and in particular of its means of propulsion and high-power electrical management.
- the first loop Al comprises a first pump 3.
- the cooler 4 is configured to allow heat exchange between the heat transfer fluid circulation circuit A and the refrigerant circulation circuit B.
- This circuit refrigerant fluid circulation B may in particular comprise a compressor, a heat exchanger of the condenser type arranged for example on the front face of the motor vehicle and an expansion device, for example an electronic expansion valve arranged upstream of the cooler 4.
- the refrigerant can be a refrigerant commonly used in the field of cooling or air conditioning circuits such as R-1234-yf, R-134a or even R744.
- the second loop A2 comprises a second heat exchanger
- the second loop A2 includes a second pump 6.
- the first Al and second A2 loops are more particularly configured to allow independent circulation of the coolant in each of the loops Al, A2 and/or a joint circulation.
- the heat transfer fluid circulation circuit A comprises different connecting pipes C1, C2, C3, C4 connecting the first A1 and second A2 loops.
- the heat transfer fluid circulating in the heat transfer fluid circulation circuit A can for example be water or glycol water.
- the heat transfer fluid circulation circuit A may thus comprise a first pipe Cl connecting the heat transfer fluid outlet of the first heat exchanger 5 to the heat transfer fluid inlet of the second heat exchanger 7. More specifically, the first pipe Cl connects a first connection point 41 to a second connection point 42.
- the first connection point 41 is arranged on the first loop Al downstream of the first heat exchanger 5, between said first heat exchanger 5 and the cooler 4.
- the first pump 3 is arranged downstream of the first heat exchanger 5 and the first connection point 41 is arranged between the first heat exchanger 5 and said first pump 3.
- the second point of connection connection 42 is in turn arranged on the second loop A2 upstream of the second heat exchanger 7, between the radiator 8 and said second heat exchanger 7.
- the second pump 6 is arranged in upstream of the second heat exchanger 7 and the second connection point 42 is arranged upstream of the said second pump 6, between the radiator 8 and the said second pump 6.
- the heat transfer fluid circulation circuit A may also include a second pipe C2 connecting the heat transfer fluid outlet of the radiator 8 and the heat transfer fluid inlet of the cooler 4. More specifically, the second pipe C2 connects a third point of connection 43 to a fourth connection point 44.
- the third connection point 43 is arranged on the second loop A2 downstream of the radiator 8, between the said radiator 8 and the second pump 6 in the example illustrated in FIG. 1.
- the fourth connection point 44 is arranged on the first loop Al upstream of the cooler 4, between the first pump 3 and the said cooler 4 without the example illustrated in Figure 1.
- the heat transfer fluid circulation circuit A may also include a third pipe C3 connecting the heat transfer fluid outlet of the cooler 4 to the heat transfer fluid inlet of the second heat exchanger 7. More specifically, the third pipe C3 connects a fifth connection point 45 to a sixth connection point 46.
- the fifth connection point 45 is arranged on the first loop Al downstream of the cooler 4, between said cooler 4 and the first heat exchanger 5.
- the sixth connection point 46 is arranged on the second loop A2 upstream of the second heat exchanger 7, more particularly upstream of the second connection point 42.
- the coolant circulation circuit A may finally include a fourth pipe C4 for bypassing the radiator 8. More specifically, the fourth pipe C4 connects a seventh connection point 47 to an eighth connection point 48.
- the seventh connection point connection 47 is placed on the second loop A2 upstream of the radiator 8, between the second heat exchanger 7 and said radiator 8.
- the eighth connection point 48 is placed on the second loop A2 downstream of the radiator 8, plus particularly between the third 43 and the sixth 46 connection point.
- the heat transfer fluid circulation circuit A may in particular include various shut-off valves.
- the heat transfer fluid circulation circuit A can thus comprise:
- shut-off valve 26 arranged on the first loop Al downstream of the first connection point 41, between said first connection point 41 and the first pump 3, and
- shut-off valve 27 arranged on the second loop A2 downstream of the eighth connection point 48, between said eighth connection point 48 and the sixth connection point 46.
- the heat transfer fluid circulation circuit A can also include a eighth shut-off valve 28 (visible in Figures 4 and 6) arranged on the second loop A2 downstream of the sixth connection point 46, between said sixth connection point 46 and the second connection point 42.
- the thermal management device 1 can operate according to various operating modes depending on the needs, the outside temperature as well as other parameters such as the temperature of the batteries as well as that of the power electronics and/or engine.
- the thermal management device 1 can in particular allow, during a start-up, the temperature rise of the elements such as the batteries and power and/or motor electronics at their optimum operating temperature.
- the heat exchanges between the heat transfer fluid circulation loop A and the coolant fluid circulation loop B can allow the heat recovery from batteries and/or power and/or motor electronics.
- other operating modes, in particular cooling of the batteries and of the power and/or motor electronics are possible via the radiator 8.
- FIG. 2 shows the thermal management device 1 according to a first mode of operation in which the batteries as well as the power and/or motor electronics are in passive temperature rise, in particular used in a heating management method of said elements.
- the batteries as well as the power and/or motor electronics are in passive temperature rise, in particular used in a heating management method of said elements.
- we mean that their simple operation allows them to rise in temperature.
- the first Al and the second loop A2 are decoupled.
- shut-off valves are closed to prevent the heat transfer fluid from flowing through the first Cl, the second C2 and the third pipe C3.
- the heat transfer fluid successively passes through the first pump 3, the cooler 4 and the first heat exchanger 5.
- the refrigerant circulation circuit B is here configured so that the refrigerant does not cross not the cooler 4 in order to prevent heat exchange.
- the circulation of the heat transfer fluid within the first loop Al notably allows a homogenization of the temperature within the batteries and therefore allows a uniform temperature rise.
- the heat transfer fluid successively passes through the second pump 6, the second heat exchanger 7 and the fourth pipe C4 in order to bypass the radiator 8 and thus avoid cooling of said heat transfer fluid.
- the fourth shut-off valve 24 as well as the seventh shut-off valve 27 are opened.
- shut-off valves are closed to prevent the heat transfer fluid to take the first Cl, the second C2 and the third C3 pipe.
- This first mode of operation is implemented in particular when the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger 5 within the first loop Al and the temperature Tmel_out of the heat transfer fluid at the outlet of the second heat exchanger 7 within the second loop A2 are both lower than a first temperature value T1, lower than a maximum operating temperature Tmax_bat of the batteries and a maximum operating temperature Tmax_mel of the power and/or motor electronics.
- the first temperature value T1 can for example be 10°C.
- the maximum operating temperature Tmax_bat of the batteries can be for example 35°C.
- the maximum operating temperature Tmax_mel of the power and/or motor electronics is generally higher than Tmax_bat, for example Tmax_mel is 70°C.
- FIG. 3 shows an alternative operating mode, similar to the first operating mode of Figure 2.
- this operating mode is implemented when the temperature Tbat_out of the heat transfer fluid in outlet of the first heat exchanger 5 is lower than the first temperature value TL
- This alternative mode of operation is nevertheless implemented when the temperature Tmel_out of the heat transfer fluid at the outlet of the second heat exchanger 7 is close to Tbat_out.
- This alternative operating mode also differs from the first operating mode in that the heat exchanges between the heat transfer fluid circulation circuit A and the refrigerant fluid circulation circuit B are not blocked.
- the heat generated both by the batteries and by the power and/or motor electronics is used to heat the refrigerant of the refrigerant circulation circuit B via the cooler 4 in order to meet the needs , for example heating the passenger compartment.
- FIGs 4 to 8 show different modes of operation in which the heat transfer fluid from the second loop A2 at the outlet of the second heat exchanger 7 is redirected to the first loop Al and the first heat exchanger 5 so as to store the heat in the batteries.
- This thus makes it possible to have a faster rise in temperature of the batteries both when it is a simple rise in temperature or when in addition to the rise in temperature, a heat recovery is requested to reheat the refrigerant from the refrigerant circulation circuit B.
- this particular management method makes it possible to dispense, at least partially, with an electric heater often necessary to accelerate the temperature rise of the batteries to their optimum operating temperature. The rise in temperature is therefore less energy-intensive and takes advantage of the heat of the power electronics and/or engine to heat the batteries by limiting the consumption of electrical energy.
- Figure 4 shows a second mode of operation of the management process.
- This second mode of operation allows in particular heat storage in the batteries.
- This second mode of operation can for example, during a rise in temperature, be implemented following the first mode of operation of FIG. 2.
- This second mode of operation is in particular implemented when:
- the heat transfer fluid from the second loop A2 at the outlet of the second heat exchanger 7 is redirected to the first loop Al and the first heat exchanger 5.
- the heat transfer fluid bypasses the radiator 8.
- the first Al and second A2 loops are in communication and the heat transfer fluid circulates successively in the second pump 6, the second heat exchanger 7 , the fourth pipe C4, the second pipe C2, the cooler 4, the first heat exchanger 5 and the first pipe CL
- the first 21, second 22, fourth 24 and fifth 25 shut-off valves are opened.
- the third 23, sixth 26 and seventh 27 stop valves are closed.
- an alternative solution illustrated in Figure 5 may be to bypass the cooler 4.
- the heat transfer fluid circulates successively in the second pump 6, the second heat exchanger 7, the fourth pipe C4, the third pipe C3, the first heat exchanger 5 and the first pipe Cl. This, the first 21, third 23, fourth 24 and fifth 25 shut-off valves are opened.
- the second 22, sixth 26, seventh 27 and eighth 28 stop valves are closed.
- FIG. 6 shows a third mode of operation of the management process.
- This third operating mode also enables heat storage in the batteries.
- This third mode of operation can for example, during a rise in temperature, be implemented following the second mode of operation of FIG. 3.
- This third mode of operation is implemented when:
- the heat transfer fluid from the second loop A2 is redirected to the first loop Al and the first heat exchanger 5.
- at least one heat transfer fluid portion from the second heat exchanger 7 is redirected to the radiator 8 before joining the first loop Al and the first heat exchanger 5 so that the temperature Tbat_in of the heat transfer fluid entering the first heat exchanger 5 is lower than the maximum operating temperature Tmax_bat batteries.
- the first A1 and second A2 loops are in communication and the heat transfer fluid circulates successively in the second pump 6, the second heat exchanger 7, part of the heat transfer fluid passes through the fourth pipe C4, another part of the heat transfer fluid passes through the radiator 8, the two parts of heat transfer fluid meet before borrowing the second pipe C2.
- the heat transfer fluid then passes through the cooler 4, the first heat exchanger 5 and the first pipe C1.
- the first 21, second 22 and fifth 25 shut-off valves are opened.
- the third 23, sixth 26 and seventh 27 shut-off valves are closed.
- the fourth shut-off valve 24 can be completely closed so that all of the heat transfer fluid passes through the radiator 8 or else partially closed so that only part of the heat transfer fluid passes through the radiator 8 and another part bypasses it via the fourth conduct C4.
- the heat from the power and/or engine electronics taken by the second heat exchanger 7 is transferred to the batteries via the first heat exchanger 5.
- the passage of at least a part of the heat transfer fluid by the radiator 8 makes it possible to control the temperature Tbat_in of the heat transfer fluid so that it is lower than Tmax_bat so as to prevent the temperature of the batteries from exceeding this maximum operating temperature beyond which the batteries can be damaged .
- Controlling the temperature of the heat transfer fluid destined for the first loop Al and the first heat exchanger 5, via in particular the fourth shut-off valve 24, makes it possible to have a temperature Tbat_in close to Tmax_bat for faster heating of the batteries and optimal heat storage in the latter.
- an alternative solution illustrated in Figure 7 may be to bypass the cooler 4 through the third pipe C3.
- the heat transfer fluid circulates successively in the second pump 6, the second heat exchanger 7, the fourth pipe C4 and/or the radiator 8, the third pipe C3, the first heat exchanger 5 and the first pipe CL
- the first 21, third 23, fourth 24 and fifth 25 shut-off valves are open.
- the second 22, sixth 26, seventh 27 and eighth 28 valves stops are closed.
- Figure 8 shows a fourth mode of operation of the management process.
- This fourth operating mode also enables heat storage in the batteries. This fourth operating mode is implemented when:
- the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger 5 is still lower than a first temperature value Tl, lower than a maximum operating temperature Tmax_bat of the batteries,
- the temperature Tmel_out of the heat transfer fluid at the outlet of the second heat exchanger 7 is for its part greater than a second temperature value T2, greater than the first temperature value T1.
- this second temperature value T2 is of the order of Tbat_out plus 20°C. So, if Tbat_out is 10°C, then T2 will be 30°C.
- This fourth mode of operation is also implemented only when the coolant from the coolant fluid circulation circuit B passes through the cooler 4 so as to recover heat from the coolant fluid circulation circuit A.
- the temperature value T3 can for example be of the order of 50° C. which leaves a delta of 25° C. which can be exchanged via the cooler 4 in heat recovery towards the refrigerant fluid circulation circuit B.
- At least part of the heat transfer fluid having bypassed the radiator 8 joins the heat transfer fluid having passed through the radiator 8 to then pass into the second pipe C2.
- the other part of the heat transfer fluid having bypassed the radiator 8 via the fourth pipe C4 remains within the second loop A2 and joins the second pump 6.
- the heat transfer fluid having passed through the second pipe C2 then passes into the cooler 4.
- part of the heat transfer fluid joins and passes through the first heat exchanger 5 and the first pipe CL
- the other part of the heat transfer fluid having passed through the cooler 4 takes the third pipe C3 to join the second loop A2.
- the first 21, second 22, third 23, fourth 24, fifth 25 and seventh 27 stop valves are opened.
- the sixth stop valve 26 is itself closed.
- the degree of opening of the fourth shut-off valve 24 makes it possible to control the quantity of heat transfer fluid passing through the radiator 8 or bypassing it.
- the degree of opening of the second 22 and seventh 27 shut-off valves makes it possible to control the quantity of heat transfer fluid going to the cooler 4 or else remaining in the second loop A2.
- the degree of opening of the third 2 and fifth 25 stop valves makes it possible to control the quantity of heat transfer fluid going to the first heat exchanger or else returning to the second loop A2. It is thus possible to control the temperature Tbat_in of the heat transfer fluid at the inlet of the first heat exchanger 5 by acting on these various shut-off valves.
- the heat from the power electronics and/or engine taken off by the second heat exchanger 7 is partly transferred to the batteries via the first heat exchanger 5.
- the passage of at least part of the heat transfer fluid by the radiator 8 makes it possible to control the temperature Tbat_in of the heat transfer fluid so that it is lower than a value T3 so as to prevent the temperature of the heat transfer fluid at the outlet of the cooler 4 from being higher than Tmax_bat so that the batteries do not exceed this maximum operating temperature beyond which the batteries can be damaged.
- Controlling the temperature of the heat transfer fluid intended for the first loop Al and the first heat exchanger 5, in particular via the various shut-off valves, makes it possible to have a temperature Tbat_in close to Tmax_bat for faster heating of the batteries and a optimal heat storage in the latter.
- Figure 9 shows a fifth operating mode implemented when:
- the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger 5 is still lower than a first temperature value T1, which is itself lower than a maximum operating temperature Tmax_bat of the batteries,
- the temperature Tmel_out of the heat transfer fluid at the outlet of the second heat exchanger 7 is for its part higher than a third temperature value T3, between the first temperature value T1 and the second temperature value T2.
- this third temperature value T3 is of the order of Tbat_out plus 10°C.
- This fifth mode of operation is also implemented only when the coolant from the coolant fluid circulation circuit B passes through the cooler 4 so as to recover heat from the coolant fluid circulation circuit A.
- the temperature Tmel_out is not high enough to ensure both heat recovery for the refrigerant fluid circulation circuit B and heat storage in the batteries. Priority is then given to heat recovery.
- the heat transfer fluid therefore circulates successively in the second pump 6, the second heat exchanger 7, the fourth pipe C4, the second pipe C2, the cooler 4 and the third pipe C3.
- the second 22, third 23 and fourth 24 shut-off valves are opened and the first 21, fifth 25 and sixth 26 shut-off valves are closed.
- FIG. 10 shows a sixth operating mode implemented when:
- the coolant from the coolant circulation circuit B passes through the cooler 4 so as to recover heat from the coolant circulation circuit.
- the first Al and second A2 loops are decoupled so that the heat transfer fluid from the first heat exchanger 5 passes through the cooler 4 in order to transfer heat to the refrigerant circulation circuit B
- the heat transfer fluid from the second heat exchanger 7 is controlled so as to remain below the maximum operating temperature Tmax_mel of the power and/or motor electronics. This control can in particular be carried out by the fact that a part of the heat transfer fluid coming from the second heat exchanger 7 can be redirected towards the radiator 8 and another part bypasses the said radiator 8 via the fourth pipe C4.
- the heat from the batteries alone is here recovered to heat the refrigerant fluid of the refrigerant fluid circulation circuit B via the cooler 4.
- Tmel_out is lower than the first temperature value T1
- all of the heat transfer fluid from the second heat exchanger bypasses the radiator 8 and passes through the fourth pipe C4 for a rise in passive temperature of the power and/or motor electronics.
- Tmel_out is between the first temperature value T1 and Tmax_mel
- part of the heat transfer fluid from the second heat exchanger 7 can bypass the radiator 8 via the fourth pipe C4 and another part of the heat transfer fluid from the second heat exchanger heat 7 can pass through the radiator 8 to be cooled so that the temperature at the inlet of the second heat exchanger is lower than Tmax_mel.
- This sixth mode of operation can be implemented in particular both when the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger 5 is between the first temperature value T1 and the maximum temperature Tmax_bat of the batteries and when the temperature Tbat_out of the heat transfer fluid at the outlet of the first heat exchanger 5 is greater than the maximum temperature Tmax_bat of the batteries provided that the temperature at the outlet of the heat transfer fluid from the cooler 4 Tchill_out remains lower than Tmax_bat.
- FIG. 11 shows a schematic representation of an example of thermal management device 1 for an electric or hybrid motor vehicle according to a second embodiment.
- This thermal management device 1 differs from that of FIG. 1 in that it incorporates a third loop A3.
- This third loop A3 more particularly comprises at least one electric heater 11 of the heat transfer fluid.
- the third loop A3 comprises a third pump 9, a condenser 10, for example also connected together with the refrigerant circulation circuit B, the electric heater 11 and a heating radiator 12 , for example disposed within an air flow to the passenger compartment.
- There third loop A3 is connected to both the first Al and the second loop A2 in order to allow, via the electric heater 11, an active temperature rise of the batteries and/or the power and/or motor electronics.
- the thermal management device 1 thus comprises a fifth pipe C5 connecting a ninth connection point 49 to a tenth connection point 50.
- the ninth connection point 49 is arranged on the third loop A3 downstream of the third pump 9 , between said third pump 9 and condenser 10.
- Tenth connection point 50 is arranged on first loop Al, between fifth connection point 45 of third pipe C3 and first heat exchanger 5, more precisely upstream of the fifth shut-off valve 25.
- the thermal management device 1 further comprises a sixth pipe C6 connecting an eleventh connection point 51 to a twelfth connection point 52.
- the eleventh connection point 51 is arranged on the second loop A2, downstream of the second exchanger heat 7, between said second heat exchanger 7 and the radiator 8, more precisely upstream of the seventh connection point 47 of the fourth pipe C4.
- the thermal management device 1 finally comprises a seventh pipe C7 connecting a thirteenth connection point 53 to a fourteenth connection point 54.
- the thirteenth connection point 53 is arranged on the second pipe C2, between the third connection point 43 and the second shut-off valve 22.
- the fourteenth connection point 54 is arranged on the third loop A3 downstream of the twelfth connection point 52, between said twelfth connection point 52 and the electric heater 11.
- the thermal management device 1 also comprises:
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- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Air-Conditioning For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2111336A FR3128410B1 (fr) | 2021-10-26 | 2021-10-26 | Procédé de contrôle d’un dispositif de gestion thermique |
| PCT/EP2022/077720 WO2023072544A1 (fr) | 2021-10-26 | 2022-10-05 | Procédé de contrôle d'un dispositif de gestion thermique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4422893A1 true EP4422893A1 (fr) | 2024-09-04 |
Family
ID=79270107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22800206.9A Pending EP4422893A1 (fr) | 2021-10-26 | 2022-10-05 | Procédé de contrôle d'un dispositif de gestion thermique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4422893A1 (fr) |
| FR (1) | FR3128410B1 (fr) |
| WO (1) | WO2023072544A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3041484A3 (fr) * | 2015-09-22 | 2017-03-24 | Renault Sas | Dispositif de conditionnement thermique d'une batterie d'un vehicule electrique ou hybride durant une recharge rapide |
| US10967702B2 (en) * | 2017-09-07 | 2021-04-06 | Tesla, Inc. | Optimal source electric vehicle heat pump with extreme temperature heating capability and efficient thermal preconditioning |
| DE102017125170A1 (de) * | 2017-10-26 | 2019-05-02 | Borgward Trademark Holdings Gmbh | Wärememanagementsystem für ein elektrofahrzeug und ein elektrofahrzeug |
| CN118046742A (zh) * | 2018-11-29 | 2024-05-17 | 比亚迪股份有限公司 | 车辆热管理系统及车辆 |
| WO2020129258A1 (fr) * | 2018-12-21 | 2020-06-25 | 本田技研工業株式会社 | Véhicule |
-
2021
- 2021-10-26 FR FR2111336A patent/FR3128410B1/fr active Active
-
2022
- 2022-10-05 WO PCT/EP2022/077720 patent/WO2023072544A1/fr not_active Ceased
- 2022-10-05 EP EP22800206.9A patent/EP4422893A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023072544A1 (fr) | 2023-05-04 |
| FR3128410A1 (fr) | 2023-04-28 |
| FR3128410B1 (fr) | 2023-10-27 |
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