DE102022207756A1 - Temperature control circuit for a motor vehicle - Google Patents

Abstract

A temperature control circuit for a motor vehicle (1000) has a first pump (1) for conveying fluid in the temperature control circuit, a battery temperature control passage (11) for temperature control of a battery (10) of the motor vehicle, a motor temperature control passage (15) for temperature control of an electric motor (5) of the motor vehicle, an electronics temperature control passage (13) for temperature control of electronics, in particular power electronics (3) for the electric motor; a bypass passage (14), which bypasses the motor temperature control passage, and a bypass actuator (4) which, in at least one motor temperature control position, allows fluid conveyed by the first pump to flow through the motor temperature control passage and, in at least one bypass position, causes at least part of the Motor temperature control position, the fluid flowing through the motor temperature control passage flows through the bypass passage instead.

Description

The present invention relates to a temperature control circuit for a motor vehicle, a temperature control system for a motor vehicle with the temperature control circuit, a motor vehicle with the temperature control circuit or temperature control system and a method for operating the temperature control circuit or temperature control system.

The object of the present invention is to improve a temperature control circuit or system or its operation.

This task is solved by a temperature control circuit with the features of claim 1. Claims 8 - 10 protect a temperature control system with a temperature control circuit described here, a motor vehicle with a temperature control circuit or temperature control system described here or a method for operating a temperature control circuit or temperature control system described here. The subclaims relate to advantageous further training.

• a) eine erste Pumpe, die wenigstens zeitweise angetrieben wird und dann Fluid in dem Temperierkreislauf fördert bzw. hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird;
• b) eine ein- oder mehrkanalige Batterietemperierpassage, die wenigstens zeitweise von, insbesondere von der ersten Pumpe gefördertem, Fluid durchströmbar ist bzw. durchströmt wird, um eine Batterie des Kraftfahrzeugs zu temperieren bzw. hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird;
• b) eine ein- oder mehrkanalige Motortemperierpassage, die wenigstens zeitweise von, insbesondere von der ersten Pumpe gefördertem, Fluid durchströmbar ist bzw. durchströmt wird, um einen Elektromotor des Kraftfahrzeugs zu temperieren bzw. hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird;
• c) eine ein- oder mehrkanalige Elektroniktemperierpassage, die wenigstens zeitweise von Fluid durchströmbar ist bzw. durchströmt wird, um eine Elektronik des Kraftfahrzeugs, in einer Weiterbildung eine Leistungselektronik und/oder für den Elektromotor, zu temperieren bzw. hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird;
• d) eine ein- oder mehrkanalige Bypasspassage, die die Motortemperierpassage (strömungstechnisch) umgeht bzw. überbrückt („bypassed“) und in einer Weiterbildung strömungstechnisch parallel zu der Motortemperierpassage und/oder in Serie mit der Elektroniktemperierpassage geschaltet ist; und
• e) ein Bypassstellglied, das
  • e1) in wenigstens einer Motortemperierstellung eine Durchströmung der Motortemperierpassage durch von der ersten Pumpe gefördertes Fluid gestattet und
  • e2) in wenigstens einer Bypassstellung bewirkt, dass ein Teil des bei der Motortemperierstellung die Motortemperierpassage durchströmenden Fluids oder das gesamte bei der Motortemperierstellung die Motortemperierpassage durchströmende Fluid stattdessen die Bypasspassage durchströmt.

According to one embodiment of the present invention, a temperature control circuit for a motor vehicle, in particular a temperature control circuit of a temperature control system or motor vehicle according to an embodiment of the present invention, has:

• a) a first pump, which is driven at least temporarily and then conveys fluid in the temperature control circuit or is set up or designed for this purpose or is used;
• b) a single- or multi-channel battery temperature control passage through which fluid can flow or is flowed through at least temporarily, in particular by the first pump, in order to temperature control a battery of the motor vehicle or is set up or designed or used for this purpose;
• b) a single or multi-channel engine temperature control passage through which fluid can flow or flows through at least temporarily, in particular by the first pump, in order to temperature control an electric motor of the motor vehicle or is set up or designed or used for this purpose;
• c) a single or multi-channel electronic temperature control passage through which fluid can flow or flows through at least temporarily in order to temperature control electronics of the motor vehicle, in a further development power electronics and/or for the electric motor, or is set up or designed for this purpose or . is used;
• d) a single- or multi-channel bypass passage that bypasses or bridges the motor temperature control passage (in terms of flow) and, in a further development, is connected in terms of flow in parallel to the motor temperature control passage and/or in series with the electronic temperature control passage; and
• e) a bypass actuator, which
  • e1) in at least one engine temperature control position, fluid conveyed by the first pump allows fluid to flow through the engine temperature control passage and
  • e2) in at least one bypass position causes part of the fluid flowing through the engine temperature control passage in the engine temperature control position or all of the fluid flowing through the engine temperature control passage in the engine temperature control position to flow through the bypass passage instead.

In one embodiment, the bypass actuator causes in the motor temperature control position that part of the fluid flowing through the bypass passage in the bypass position or all of the fluid flowing through the bypass passage in the bypass position flows through the motor temperature control position instead. In one embodiment, the bypass actuator is arranged upstream or downstream of the first pump in the flow direction of fluid delivered by the first pump.

In one embodiment, the battery temperature control passage and/or the first pump at least temporarily supplies the electronics temperature control passage and/or the engine temperature control passage and/or the bypass passage with fluid, in one embodiment with fluid delivered by the first pump, or is (each) set up for this purpose or trained or is (respectively) used for this purpose. In one embodiment, the electronics temperature control passage and/or the engine temperature control passage and/or the bypass passage at least temporarily supplies the battery temperature control passage and/or the first pump with fluid or is (each) set up or designed for this purpose or is (each) used for this purpose. In one embodiment, in the flow direction of the fluid conveyed by the first pump, the motor temperature control passage and/or the bypass passage is arranged downstream of the electronics temperature control passage and/or the electronics temperature control passage is arranged downstream of the battery temperature control passage. In this way, temperature control can be improved in one embodiment, although other arrangements are also possible and can be advantageous, particularly in terms of flow technology and/or construction.

By the bypass actuator fluid is either completely or partially passed through the motor temperature control passage or instead completely or partially through the bypass passage or past the motor temperature control passage, in one embodiment Advantageously, a hydraulic loss when flowing through the engine temperature control passage and/or heat transfer in the engine temperature control passage can be reduced in accordance with the situation. In one embodiment, this makes it possible to exchange heat advantageously with less loss between the battery temperature control passage and the electronics temperature control passage and thus heat the battery with heat from the electronics (temperature control passage) or the electronics with heat from the battery (temperature control passage).

In one embodiment, the electric motor drives the motor vehicle at least temporarily or is set up or designed for this purpose or is used for this purpose. In one embodiment, the battery is a rechargeable battery or an accumulator and/or supplies the electric motor with electrical energy or is set up or designed for this purpose or is used for this purpose. Temperature control in the sense of the present invention can in particular include cooling and/or heating, in particular cooling or heating, so that in one embodiment “temperature control...” by “cooling and/or heating...”, in particular by “Cooling...” or “Heating...” can be replaced.

Power electronics in particular should be operated in a defined temperature range. By at least temporarily heating the power electronics via waste heat from the battery, which occurs in particular during charging and especially rapid charging, while hydraulic resistance or loss and a thermodynamic heat sink are reduced, preferably eliminated, by temperature control of the electric motor, temperature control can be done the power electronics and/or battery or the temperature control circuit can be improved in one version. Accordingly, an advantage of an embodiment of the present invention becomes particularly clear in this preferred application, but is not limited to this.

In one embodiment, the temperature control circuit has a single- or multi-channel heat exchanger passage with at least one heat exchanger, in one embodiment a radiator or car cooler, which at least temporarily tempers fluid conveyed by the first pump or is set up or designed for this purpose or is used . As a result, in one embodiment, the (power) electronics and, in a further development, the battery and/or the electric motor can be advantageously tempered or the fluid conveyed by the first pump can be tempered for this purpose.

• - in wenigstens einer Wärmetauscherstellung eine Durchströmung der Wärmetauscherpassage durch von der ersten Pumpe gefördertes Fluid gestattet und
• - in wenigstens einer Umgehungsstellung bewirkt, dass ein Teil des bei der Wärmetauscherstellung die Wärmetauscherpassage durchströmenden Fluids oder das gesamte bei der Wärmetauscherstellung die Wärmetauscherpassage durchströmende Fluid, in einer Weiterbildung das gesamte von der ersten Pumpe geförderte Fluid, stattdessen die Umgehungspassage durchströmt, die die Wärmetauscherpassage (strömungstechnisch) umgeht bzw. überbrückt, bzw. das hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird.

In one embodiment, the temperature control circuit has a single or multi-channel bypass passage and a heat exchanger actuator, which

• - In at least one heat exchanger position, fluid conveyed by the first pump allows fluid to flow through the heat exchanger passage and
• - In at least one bypass position, part of the fluid flowing through the heat exchanger passage in the heat exchanger position or all of the fluid flowing through the heat exchanger passage in the heat exchanger position, in a further development the entire fluid conveyed by the first pump, instead flows through the bypass passage, which flows through the heat exchanger passage ( in terms of flow technology) bypasses or bridges, or which is set up or designed or used for this purpose.

In one embodiment, the heat exchanger actuator in the heat exchanger position causes part of the fluid flowing through the bypass passage in the bypass position or all of the fluid flowing through the bypass passage in the bypass position, in a further development, the entire fluid conveyed by the first pump, to flow through the heat exchanger passage instead. In one embodiment, the heat exchanger actuator is arranged upstream or downstream of the first pump in the flow direction of fluid conveyed by the first pump.

As a result, in one embodiment, the heat exchanger can optionally be at least partially bridged and thereby in particular a temperature control of fluid in the temperature control circuit and thereby a temperature control of the (power) electronics, battery and / or the electric motor can be advantageously adapted, in particular controlled or regulated.

• - in wenigstens einer Elektroniktemperierstellung eine Durchströmung der Elektroniktemperierpassage durch von der ersten Pumpe gefördertes Fluid gestattet und
• - in wenigstens einer Elektronikbypasssstellung bewirkt, dass ein Teil des bei der Elektroniktemperierstellung die Elektroniktemperierpassage durchströmenden Fluids oder das gesamte bei der Elektroniktemperierstellung die Elektroniktemperierpassage durchströmende Fluid stattdessen die Elektronikbypasspassage durchströmt.

In one embodiment, the temperature control circuit has a single or multi-channel electronics bypass passage, which bypasses or bridges both the electronics temperature control passage and the motor temperature control passage (flow-related), and an electronics bypass actuator, which

• - In at least one electronics temperature control position, fluid conveyed by the first pump allows fluid to flow through the electronics temperature control passage and
• - In at least one electronics bypass position, part of the fluid flowing through the electronics temperature control passage in the electronics temperature control position or all of the fluid flowing through the electronics temperature control passage in the electronics temperature control position flows through the electronics bypass passage instead.

In one embodiment, the electronics bypass actuator in the electronics temperature control position causes part of the fluid flowing through the electronics bypass passage in the electronics bypass position or all of the fluid flowing through the electronics bypass passage in the electronics bypass position, in a further development, the entire fluid delivered by the first pump, to flow through the electronics temperature control passage instead. In one embodiment, the electronic bypass actuator is arranged upstream or downstream of the first pump in the flow direction of fluid delivered by the first pump.

In this way, in one embodiment, in addition to the motor temperature control passage, the electronics temperature control passage can also be optionally bypassed or bridged (in terms of flow), thereby further reducing the hydraulic resistance level or loss and/or the temperature control of the individual sections can be advantageously adjusted.

In one embodiment, the temperature control circuit has a battery temperature control subcircuit that has the battery temperature control passage. In one embodiment, the battery temperature control subcircuit has a second pump, which is driven at least temporarily and then conveys fluid in the battery temperature control subcircuit or is set up or designed or used for this purpose. Additionally or alternatively, in one embodiment, the battery temperature control sub-circuit has a heat exchanger which at least temporarily, in particular fluid conveyed by the second pump, is tempered in the battery temperature control sub-circuit for temperature control of the battery or is set up or designed for this purpose or is used. In this way, in one embodiment, the battery can be tempered particularly advantageously, particularly efficiently.

1. a) in wenigstens einer Koppelstellung eine Strömung von von der ersten Pumpe gefördertem Fluid zu der zweiten Pumpe und/oder eine Strömung von von der zweiten Pumpe gefördertem Fluid zu der ersten Pumpe bewirkt und
2. b) in wenigstens einer Entkoppelstellung bewirkt, dass
   • b1) ein Teil des bei der Koppelstellung von der ersten Pumpe zu der zweiten Pumpe strömenden Fluids oder das gesamte bei der Koppelstellung von der ersten Pumpe zu der zweiten Pumpe strömende Fluid, in einer Weiterbildung das gesamte von der ersten Pumpe geförderte Fluid, stattdessen unter Umgehung der zweiten Pumpe zu der ersten Pumpe (zurück)strömt und/oder
   • b2) ein Teil des bei der Koppelstellung von der zweiten Pumpe zu der ersten Pumpe strömenden Fluids oder das gesamte bei der Koppelstellung von der zweiten Pumpe zu der ersten Pumpe strömende Fluid, in einer Weiterbildung das gesamte von der zweiten Pumpe geförderte Fluid, stattdessen unter Umgehung der ersten Pumpe zu der zweiten Pumpe (zurück)strömt bzw. das hierzu eingerichtet bzw. ausgebildet ist bzw. verwendet wird.

In one embodiment, the temperature control circuit has a coupling actuator, which

1. a) in at least one coupling position, a flow of fluid conveyed by the first pump to the second pump and/or a flow of fluid conveyed by the second pump to the first pump is effected and
2. b) in at least one decoupling position causes
   • b1) part of the fluid flowing from the first pump to the second pump in the coupling position or all of the fluid flowing from the first pump to the second pump in the coupling position, in a further development the entire fluid delivered by the first pump, instead bypassing the second pump flows (back) to the first pump and/or
   • b2) part of the fluid flowing from the second pump to the first pump in the coupling position or all of the fluid flowing from the second pump to the first pump in the coupling position, in a further development the entire fluid delivered by the second pump, instead bypassing the first pump flows (back) to the second pump or that is set up or designed or used for this purpose.

As a result, in one embodiment, the first and second pumps can be connected in series via the coupling actuator (flow-related). In this way, in one embodiment, heat or cooling power can advantageously be transferred or exchanged between the battery and the (power) electronics and, if necessary, the electric motor, thereby improving the temperature control of the battery, the (power) electronics and/or the electric motor.

In one embodiment, the bypass actuator has a multi-way valve, in a further development a switching valve, in particular a changeover or switch-off valve, which in one embodiment shuts off the bypass passage in the engine temperature control position or separates it from the first pump and / or in the bypass position shuts off or separates from the first pump or which is set up or designed or used for this purpose, in another development a mixing valve which, in one embodiment, the bypass passage and the motor temperature control passage with fluid delivered by the first pump in the motor temperature control position and the bypass position supplied in different conditions or which is set up or designed or used for this purpose.

Additionally or alternatively, in one embodiment the heat exchanger actuator has a multi-way valve, in one development a switching valve, in particular changeover or switch-off valve, in another development a mixing valve.

Additionally or alternatively, in one embodiment the electronic bypass actuator has a multi-way valve, in a further development a switching valve, in particular a changeover or switch-off valve, in another development a mixing valve.

Additionally or alternatively, in one embodiment the coupling actuator has a multi-way valve, in one development a switching valve, in particular changeover or switch-off valve, in another development a mixing valve.

A switching valve, in particular a changeover or switch-off valve, can be advantageous in one embodiment The structure and/or control of the temperature control circuit can be simplified.

In one embodiment, a mixing valve can be used to control or regulate the temperature of the battery, (power) electronics and/or the electric motor more flexibly or variably and thereby improve the battery or (power) electronics or the electric motor, in particular more precisely and/or more adapted to the situation and tempered.

In general, in one embodiment the bypass actuator has only two (switching) positions, namely the motor temperature control position and the bypass position, in another embodiment it has three or more positions, in particular one or more further motor temperature control positions and/or one or more further bypass positions.

Additionally or alternatively, in one embodiment the heat exchanger actuator has only two (switching) positions, namely the heat exchanger position and the bypass position, in another embodiment it has three or more positions, in particular one or more further heat exchanger positions and/or one or more further bypass positions.

Additionally or alternatively, in one embodiment the electronics bypass actuator has only two (switching) positions, namely the electronics temperature control position and the electronics bypass position, in another embodiment it has three or more positions, in particular one or more further electronics temperature control positions and/or one or more further electronics bypass positions.

Additionally or alternatively, in one embodiment the coupling actuator has only two (switching) positions, namely the coupling position and the decoupling position, in another embodiment it has three or more positions, in particular one or more decoupling positions.

Additionally or alternatively, in one embodiment, the bypass actuator and heat exchanger actuator are formed integrally with one another, and can in particular be the same or an actuator, in a further development, a multi-way valve.

Additionally or alternatively, in one embodiment, the bypass actuator and electronic bypass actuator are formed integrally with one another, and can in particular be the same or an actuator, in a further development, a multi-way valve.

Additionally or alternatively, in one embodiment, the bypass actuator and coupling actuator are designed integrally with one another, and can in particular be the same or an actuator, in a further development, a multi-way valve.

Additionally or alternatively, in one embodiment, the heat exchanger actuator and electronic bypass actuator are formed integrally with one another, and can in particular be the same or an actuator, in a further development, a multi-way valve.

Additionally or alternatively, in one embodiment, the heat exchanger actuator and coupling actuator are formed integrally with one another, and can in particular be the same or an actuator, in a further development, a multi-way valve.

Additionally or alternatively, in one embodiment, the electronic bypass actuator and coupling actuator are formed integrally with one another and can in particular be the same or an actuator, in a further development a multi-way valve.

As a result, in one embodiment, the temperature control circuit can be made more compact and/or its control or regulation can be simplified.

Additionally or alternatively, in one embodiment, the bypass actuator, the heat exchanger actuator, the electronics bypass actuator and/or the coupling actuator are designed integrally with the (power) electronics and/or the electric motor or integrated into them.

As a result, in one embodiment, the temperature control circuit or the temperature control system can be made more compact and/or the corresponding actuator can be better protected and/or installed.

Additionally or alternatively, in one embodiment, the bypass actuator, the heat exchanger actuator, the electronic bypass actuator and/or the coupling actuator are integral with another component of the motor vehicle, in particular the temperature control circuit, in one embodiment one of the pumps, the one or more of the heat exchangers or another component of the Motor vehicle, in particular the temperature control circuit, formed or integrated into it.

As a result, in one embodiment, the temperature control circuit can be made more compact and/or the corresponding actuator can be better protected and/or mounted.

According to one embodiment of the present invention, a temperature control system for a motor vehicle, in particular a temperature control system of a motor vehicle according to an embodiment of the present invention, has a further temperature control circuit which at least temporarily controls the motor vehicle, in one embodiment at least a passenger compartment, tempered or set up or designed for this purpose or is used, the aforementioned heat exchanger being set up or designed or used for temperature control of fluid in the battery temperature control subcircuit for heat exchange between the battery temperature control subcircuit and this further temperature control circuit.

As a result, in one embodiment the battery and in a further development alternatively or additionally the (power) electronics and/or the electric motor can be particularly advantageously tempered or the fluid delivered by the second pump can be tempered for this purpose.

In one version, the motor vehicle is a passenger car. For this purpose, in particular due to the structural and thermal boundary conditions and operating conditions typical of passenger cars, this represents a particularly preferred application, without the invention being limited to this.

• - Stellen des Bypassstellglieds in die Motortemperierstellung; und/oder den Schritt:
• - Stellen des Bypassstellglieds in die Bypassstellung;

wobei in einer Ausführung die erste und in einer Weiterbildung die zweite Pumpe wenigstens zeitweise zum Fördern von Fluid angetrieben werden, insbesondere bei der Motortemperierstellung und/oder bei der Bypassstellung.According to one embodiment of the present invention, a method for operating a temperature control circuit described here, in particular a temperature control system described here, comprises the step:

• - Place the bypass actuator in the engine temperature control position; and/or the step:
• - Place the bypass actuator in the bypass position;

wherein in one embodiment the first pump and in a further development the second pump are driven at least temporarily to deliver fluid, in particular in the engine temperature control position and/or in the bypass position.

• - Stellen des Wärmetauscherstellglieds in die Wärmetauscherstellung; und/oder den Schritt:
• - Stellen des Wärmetauscherstellglieds in die Umgehungsstellung;

wobei in einer Ausführung die erste und in einer Weiterbildung die zweite Pumpe wenigstens zeitweise zum Fördern von Fluid angetrieben werden, insbesondere bei der Wärmetauscherstellung und/oder bei der Umgehungsstellung.In one embodiment, the method includes the step:

• - Place the heat exchanger actuator in the heat exchanger setting; and/or the step:
• - Place the heat exchanger actuator in the bypass position;

wherein in one embodiment the first pump and in a further development the second pump are driven at least temporarily to convey fluid, in particular in the heat exchanger position and/or in the bypass position.

• - Stellen des Elektronikbypassstellglieds in die Elektroniktemperierstellung; und/oder den Schritt:
• - Stellen des Elektronikbypassstellglieds in die Elektronikbypassstellung;

wobei in einer Ausführung die erste und in einer Weiterbildung die zweite Pumpe wenigstens zeitweise zum Fördern von Fluid angetrieben werden, insbesondere bei der Elektroniktemperierstellung und/oder bei der Elektronikbypassstellung.In one embodiment, the method includes the step:

• - Place the electronics bypass actuator in the electronics temperature control position; and/or the step:
• - Place the electronics bypass actuator in the electronics bypass position;

wherein in one embodiment the first pump and in a further development the second pump are driven at least temporarily to convey fluid, in particular in the electronics temperature control position and/or in the electronics bypass position.

• - Stellen des Koppelstellglieds in die Koppelstellung; und/oder den Schritt:
• - Stellen des Koppelstellglieds in die Entkoppelstellung;

wobei in einer Ausführung die erste und in einer Weiterbildung die zweite Pumpe wenigstens zeitweise zum Fördern von Fluid angetrieben werden, insbesondere bei der Koppelstellung und/oder bei der Entkoppelstellung.In one embodiment, the method includes the step:

• - Place the coupling actuator in the coupling position; and/or the step:
• - Place the coupling actuator in the decoupling position;

wherein in one embodiment the first pump and in a further development the second pump are driven at least temporarily to convey fluid, in particular in the coupling position and/or in the decoupling position.

In one embodiment, in the bypass position, in a further development when charging the battery and / or when operating the (power) electronics, preferably a control with test pulses and / or without generating torque of the electric motor, the first pump pumps at least temporarily Fluid is delivered via the bypass passage, bypassing the engine temperature control passage, to the first pump and/or into the battery temperature control passage, in a further development at least temporarily bypassing or bridging the heat exchanger passage (in terms of flow technology), or the temperature control circuit or the temperature control system is set up for this purpose or trained or used for this purpose.

Thus, in a particularly advantageous application, heat that is generated during charging, in particular rapid charging, of the battery can be used to heat the (power) electronics and / or heat that is generated by operation of the (power) electronics, preferably control with test pulses and /or without generating torque from the electric motor, can be used to heat the battery.

In the present case, “demonstrate” is expressly understood to be non-exhaustive in the usual technical terms. Correspondingly, a feature A that has a feature B can have one or more further features identical to features B and/or one or more other features. Likewise, the indefinite article “a(e)” is expressly understood in the usual technical manner to be non-exhaustive. Accordingly, temperature control of a battery/an electric motor/electronics can in particular also be temperature control of several batteries or several electric motors or several electronics or is to be understood as temperature control of at least one battery or at least one electric motor or at least one piece of electronics, or a battery/an electric motor/an electronics in the sense of the present invention can also include several spaced-apart batteries or have several spaced-apart electric motors or several spaced-apart electronics.

In one embodiment, the motor vehicle has, in one embodiment the temperature control system, in a further development the temperature control circuit, the battery, the (power) electronics and/or the electric motor.

An arrangement of an actuator upstream of a pump can advantageously reduce hydraulic resistance or loss in one embodiment, and an arrangement downstream of a pump in one embodiment can improve the flow through it.

If, in one embodiment, the first and second pumps are advantageously connected in series (in terms of fluid flow), then in one embodiment, high or higher pressures and/or volume flows can advantageously be achieved, in particular with smaller pumps, and thereby the Temperature control of the battery, the (power) electronics and / or the electric motor or the temperature control circuit or the temperature control system can be improved. By conveying fluid delivered by the pump(s) while (fluidically) bypassing or bridging the engine temperature control passage between the battery and (power) electronics, in one embodiment, a hydraulic resistance for flow through the engine temperature control passage does not have to be compensated or . In one embodiment, a hydraulic loss can be advantageously reduced and the temperature control or the temperature control circuit or the temperature control system can be (further) improved.

• 1: ein Kraftfahrzeug mit einem Temperiersystem mit einem Temperierkreislauf nach einer Ausführung der vorliegenden Erfindung; und
• 2: ein Verfahren nach einer Ausführung der vorliegenden Erfindung.

Further advantages and features result from the subclaims and the exemplary embodiments. This shows, partly schematized:

• 1 : a motor vehicle with a temperature control system with a temperature control circuit according to an embodiment of the present invention; and
• 2 : a method according to an embodiment of the present invention.

1 shows a motor vehicle 1000 with a temperature control system with a temperature control circuit according to an embodiment of the present invention.

The temperature control circuit or the temperature control system or the motor vehicle 1000 has a first pump 1 for conveying fluid in the temperature control circuit, a battery temperature control passage 11 for temperature control of a battery 10 of the motor vehicle 1000, a motor temperature control passage 15 for temperature control of an electric motor 5 of the motor vehicle, an electronics temperature control passage 13 for temperature control of a power electronics 3 for the electric motor, a bypass passage 14, which bypasses the motor temperature control passage 15, and a bypass actuator in the form of a 3/2-way valve 4, which in at least one motor temperature control position allows a flow through the motor temperature control passage 15 through what is conveyed by the first pump 1 Fluid allowed and in at least one bypass position causes at least part of the fluid flowing through the engine temperature control passage 15 in the engine temperature control position to flow through the bypass passage 14 instead.

The temperature control circuit has a heat exchanger passage 16 with at least one heat exchanger 6 for temperature control of fluid conveyed by the first pump 1, a bypass passage 17 and a heat exchanger actuator in the form of a 5/3-way valve 7, which allows flow through the heat exchanger passage 16 in at least one heat exchanger position fluid conveyed by the first pump 1 is permitted and in at least one bypass position causes at least part of the fluid flowing through the heat exchanger passage 16 in the heat exchanger position to instead flow through the bypass passage 17, which bypasses the heat exchanger passage 16.

The temperature control circuit has an electronics bypass passage 12, which bypasses the electronics temperature control passage 13 and the motor temperature control passage 15, and an electronics bypass actuator in the form of a 3/2-way valve 2, which allows fluid conveyed by the first pump 1 to flow through the electronics temperature control passage 13 in at least one electronics temperature control position and in at least one electronics bypass position, at least part of the fluid flowing through the electronics temperature control passage 13 in the electronics temperature control position flows through the electronics bypass passage 12 instead.

The temperature control circuit has a battery temperature control subcircuit 21, which has the battery temperature control passage 11 as well as a second pump 8 for conveying fluid in the battery temperature control subcircuit 21 and a heat exchanger 9 for temperature control of fluid in the battery temperature control subcircuit 21 for temperature control of the battery 10.

The 5/3-way valve forms a head that is integral with the heat exchanger actuator pel actuator, which in at least one coupling position causes a flow of fluid conveyed by the first pump 1 to the second pump 8 and a flow of fluid conveyed by the second pump 8 to the first pump 1 and in at least one decoupling position causes at least a part of the fluid flowing in the coupling position from the first pump 1 to the second pump 8 instead bypassing the second pump 8 to the first pump 1 and at least part of the fluid flowing in the coupling position from the second pump 8 to the first pump 1 instead Bypassing the first pump 1 flows to the second pump 8.

The temperature control system has a further temperature control circuit 20 for temperature control of the motor vehicle 1000, wherein the heat exchanger 9 is designed for temperature control of fluid in the battery temperature control subcircuit 21 for heat exchange between the battery temperature control subcircuit 21 and the further temperature control circuit 20.

2 illustrates a method for operating the temperature control circuit or temperature control system according to an embodiment of the present invention with step S10: placing the bypass actuator in the bypass position and step S20: driving the first pump to deliver fluid. In a step S30, the bypass actuator can be placed in the engine temperature control position.

In the engine temperature control position and/or in the bypass position, the 5/3-way valve 7 can be placed in the heat exchanger or bypass position or in the coupling or decoupling position.

Although exemplary embodiments have been explained in the preceding description, it should be noted that a variety of modifications are possible. It should also be noted that the exemplary statements are merely examples and are not intended to limit the scope of protection, applications and structure in any way. Rather, the preceding description provides the person skilled in the art with a guideline for the implementation of at least one exemplary embodiment, whereby various changes, in particular with regard to the function and arrangement of the components described, can be made without leaving the scope of protection, as it appears the claims and combinations of features equivalent to them.

Reference symbol list

1

first pump

2

3/2-way valve (electronic bypass actuator)

3

Power electronics

4

3/2-way valve (bypass actuator)

5

Electric motor

6

Heat exchanger

7

5/3-way valve (integral heat exchanger and coupling actuator)

8th

second pump

9

Heat exchanger

10

battery

11

Battery temperature control passage

12

Electronics bypass passage

13

Electronics temperature control passage

14

Bypass passage

15

Motor temperature control passage

16

Heat exchanger passage

17

Bypass passage

20

another temperature control circuit

21

Battery temperature control subcircuit

1000

motor vehicle

Claims (11)

Temperature control circuit for a motor vehicle (1000), the temperature control circuit a first pump (1) for conveying fluid in the temperature control circuit; a battery temperature control passage (11) for temperature control of a battery (10) of the motor vehicle; a motor temperature control passage (15) for temperature control of an electric motor (5) of the motor vehicle; an electronics temperature control passage (13) for temperature control of electronics, in particular power electronics (3) for the electric motor; a bypass passage (14) that bypasses the engine temperature control passage; and has a bypass actuator (4), which In at least one engine temperature control position, fluid conveyed by the first pump allows fluid to flow through the engine temperature control passage and In at least one bypass position, at least part of the fluid flowing through the engine temperature control passage in the engine temperature control position flows through the bypass passage instead. Temperature control circuit according to the preceding claim, characterized by a heat exchanger passage (16) with at least one heat exchanger (6) for temperature control of fluid conveyed by the first pump. Temperature control circuit according to the preceding claim, characterized by a bypass passage (17) and a heat exchanger actuator (7), which - in at least one heat exchanger position, allows fluid conveyed by the first pump to flow through the heat exchanger passage and - in at least one bypass position, causes at least a part the fluid flowing through the heat exchanger passage during heat exchanger creation instead flows through the bypass passage, which bypasses the heat exchanger passage. Temperature control circuit according to one of the preceding claims, characterized by an electronics bypass passage (12), which bypasses the electronics temperature control passage and the motor temperature control passage, and an electronics bypass actuator (2), which - in at least one electronics temperature control position, allows fluid conveyed by the first pump to flow through the electronics temperature control passage and - In at least one electronics bypass position, at least part of the fluid flowing through the electronics temperature control passage in the electronics temperature control position flows through the electronics bypass passage instead. Temperature control circuit according to one of the preceding claims, characterized by a battery temperature control sub-circuit (21) which has the battery temperature control passage and a second pump (8) for conveying fluid in the battery temperature control sub-circuit and/or a heat exchanger (9) for tempering fluid in the battery temperature control sub-circuit for tempering the Battery has. Temperature control circuit according to the preceding claim, characterized by a coupling actuator (7) which - in at least one coupling position, causes a flow of fluid conveyed by the first pump to the second pump and/or a flow of fluid conveyed by the second pump to the first pump and - in at least one decoupling position, at least part of the fluid flowing from the first pump to the second pump in the coupling position instead flows to the first pump, bypassing the second pump, and/or at least part of the fluid flowing from the second pump in the coupling position Fluid flowing to the first pump instead flows to the second pump, bypassing the first pump. Temperature control circuit according to one of the preceding claims, characterized in that the bypass actuator, heat exchanger actuator, electronic bypass actuator and / or coupling actuator has a multi-way valve, in particular a switching or mixing valve, and / or the bypass actuator and heat exchanger actuator and / or the bypass actuator and electronic bypass actuator and / or that Bypass actuator and coupling actuator and / or the heat exchanger actuator and electronics bypass actuator and / or the heat exchanger actuator and coupling actuator and / or the electronics bypass actuator and coupling actuator are formed integrally with each other and / or the bypass actuator, heat exchanger actuator, electronics bypass actuator and / or coupling actuator are integral with the electric motor, the electronics and / or another component of the motor vehicle. Temperature control system for a motor vehicle (1000) with a temperature control circuit according to one of the preceding claims and a further temperature control circuit (20) for temperature control of the motor vehicle, wherein the heat exchanger is designed for temperature control of fluid in the battery temperature control subcircuit for heat exchange between the battery temperature control subcircuit and the further temperature control circuit. Motor vehicle (1000), in particular passenger cars, with a temperature control circuit, in particular temperature control system, according to one of the preceding claims. Method for operating a temperature control circuit, in particular temperature control system, according to one of the preceding claims, with at least one of the steps: Set (S30) the bypass actuator to the motor temperature control position; and or Place (S10) the bypass actuator in the bypass position; and the step: Driving (S20) the first pump to deliver fluid. Method according to the preceding claim, characterized in that in the bypass position, in particular when charging the battery and / or operating the electronics, fluid conveyed by the first pump via the bypass passage, bypassing the engine temperature control passage, to the first pump and / or into the Battery temperature control passage is supplied.

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