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CN-115122905-B - Thermal management module and method of operation

CN115122905BCN 115122905 BCN115122905 BCN 115122905BCN-115122905-B

Abstract

The invention relates to a thermal management module (1) having a component carrier (2), at least two, preferably a plurality of electrically controllable functional components (3) for temperature control of at least one vehicle component of a motor vehicle, which functional components are connected to the component carrier (2) in a detachable or non-detachable manner, at least one electrical control unit (4) comprising a control electronics system (5) for electrically controlling at least two, preferably a plurality of, particularly preferably all functional components (3), which control electronics system is electrically connected to the respective functional component (3) via at least one electrical control line path (6) and/or via a component field bus (7) and is arranged in a housing (8) of the control unit (4), wherein the housing (8) of the control unit (4) is fixed to at least one of the component carrier (2) and/or the functional components (3) in a detachable or non-detachable manner.

Inventors

  • CHRISTIAN HAASE
  • Hall Ge Wuliqi

Assignees

  • 马勒国际有限公司

Dates

Publication Date
20260505
Application Date
20220325
Priority Date
20210326

Claims (19)

  1. 1. A thermal management module (1) for a temperature control circuit of a motor vehicle, said thermal management module having -A component carrier (2); -at least two electrically controllable functional components (3) for temperature control of at least one vehicle component of a motor vehicle, which electrically controllable functional components are detachably or non-detachably connected to the component carrier (2); -at least one electrical control unit (4) comprising a control electronics system (5) for electrically controlling at least two of the functional components (3), the control electronics system being electrically connected to the respective functional component (3) via a component fieldbus (7) or via at least one electrical control line path (6) and the component fieldbus (7) and being arranged in a housing (8) of the control unit (4); Wherein a housing (8) of the control unit (4) is detachably or non-detachably fixed to at least one of the component carrier (2) and/or the functional component (3), -Wherein the control unit (4) comprises at least one voltage supply line (16) electrically connected to the control electronics system (5) for providing electrical energy to the control electronics system (5); -wherein the at least one voltage supply line (16) is electrically connected to an input connection (9) provided on the housing (8) and is also connected to a power output connection (17) also provided on the housing (8), through which power output connection the voltage supply line (16) of the voltage source is electrically connected to the at least one functional component (3), and -Wherein the control unit (4) is configured to: -switching between a first operating mode (B1) and at least one second operating mode (B2, B3); -in a first operating mode (B1), control commands received from the vehicle fieldbus (10) are transferred by the control electronics system (5) to the component fieldbus (7) for controlling the relevant functional component (3); -in at least one second operating mode (B2, B3), control commands received from the vehicle fieldbus (10) are processed by the control electronics system (5) so that the control of the functional component (3) is performed by the control unit (5).
  2. 2. The module of claim 1, wherein the module is further configured to, -The detachable fastening of the housing (8) is achieved by at least one screw connection and/or clamping connection and/or snap connection, and/or -The non-removable fastening of the housing (8) is achieved by at least one rivet connection and/or welded connection.
  3. 3. A module according to claim 1 or 2, characterized in that, -Providing an electrical input connection (9) on the housing (8), through which the control electronics (5) including the component fieldbus (7) can be connected electrically or in a data-transmission manner to the vehicle fieldbus (10) and the voltage source (11) of the motor vehicle; -the input connection (9) can be electrically connected to a vehicle field bus (10) and a voltage source (11) of the motor vehicle via an input plug connection (12).
  4. 4. A module according to claim 3, wherein, The input plug connection (12) comprises an input socket (13) fixed to the housing (8), into which an input plug (14) with an electrical connection line (15) to a voltage source (11) or a vehicle field bus (10) can be plugged, said input plug being formed complementarily to the input socket (13).
  5. 5. A module according to claim 1 or 2, characterized in that, An electrical control output connection (18) is provided on the housing (8), via which at least one of the electrical control line paths (6) and the component field bus (7) can be electrically connected to the control electronics system (5).
  6. 6. The module of claim 5, wherein the module is further configured to, -The electrical control output connection (18) and the power supply output connection (17) can be electrically connected or electrically connected to the functional component (3) by means of a common output plug connection (19) provided on the control housing (8), which common output plug connection has an output socket (20) and an output plug (21) complementary thereto, or -The electrical control output connection (18) and the power supply output connection (17) can be electrically connected or electrically connected to the functional component by means of two output plug connections (19 a, 19 b) respectively formed and provided on the control housing, each having a separate socket (20 a, 20 b) and a separate output plug (21 a, 21 b) respectively complementary thereto.
  7. 7. A module according to claim 1 or 2, characterized in that, The at least one voltage supply line (16) comprises a first voltage supply line (16 a) and a second voltage supply line (16 b), which are designed for transmitting different electrical outputs (P1, P2).
  8. 8. A module according to claim 1 or 2, characterized in that, The module (1) comprises at least one functional component (3) of a cooling circuit of a vehicle through which a cooling fluid can flow, and a component carrier (2).
  9. 9.A module according to claim 1 or 2, characterized in that, Said at least one functional component (3) is formed by an expansion tank (25) connectable to a cooling circuit for collecting a cooling liquid, and/or, Said at least one functional component (3) is formed by a pump (27 a, 27 b) which can be connected into the cooling circuit and/or, Said at least one functional component (3) is formed by a cooler (24) which can be connected into a cooling circuit and/or, Said at least one functional component (3) is formed by a heat exchanger, which can be connected into a cooling circuit and/or, Said at least one functional component (3) is formed by a valve (26 a, 26 b) which can be connected into the cooling circuit and/or, Said at least one functional component (3) is formed by a filter which can be connected into the cooling circuit and/or, -Said at least one functional component (3) is formed by an indirect condenser, which can be connected into a cooling circuit.
  10. 10. The module of claim 1, wherein the module is further configured to, The control electronics (5) are used to electrically control all functional components (3).
  11. 11. A module according to claim 1 or 2, characterized in that, An electrical control output connection (18) is provided on the housing (8), via which a plurality of the electrical control line paths (6) and a component field bus (7) can be electrically connected to the control electronics system (5).
  12. 12. A module according to claim 1 or 2, characterized in that, An electrical control output connection (18) is provided on the housing (8), by means of which all electrical control line paths (6) and component field buses (7) can be electrically connected to the control electronics system (5).
  13. 13. A motor vehicle has -An internal combustion engine and/or an electric drive; -a temperature control circuit for temperature control of at least one component of the motor vehicle, wherein the temperature control circuit comprises a thermal management module (1) according to any one of the preceding claims.
  14. 14. A motor vehicle according to claim 13, wherein, The temperature control circuit is used for controlling the temperature of a battery and/or a battery electric drive of the motor vehicle.
  15. 15. A method for operating a thermal management module (1) according to any one of claims 1 to 12, wherein according to the method: The control unit (5) is capable of switching between a first operating mode (B1) and at least one second operating mode (B2, B3), -In a first operating mode (B1), control commands received from the vehicle fieldbus (10) are transferred by the control electronics system (5) to the component fieldbus (7) for controlling the relevant functional component (3); -in at least one second operating mode (B2, B3), control commands received from the vehicle fieldbus (10) are processed by the control electronics system (5) so that the control of the functional component (3) is performed by the control unit (5).
  16. 16. The method of claim 15, wherein the step of determining the position of the probe is performed, In at least one second operating mode (B2, B3), the control unit (4) controls at least one functional component (3) via a component field bus (7) or via an electrical control line (6) in response to at least one higher-level control command (SB) received from a vehicle field bus (10), the functional component (3) being connected to the control device (4) via the component field bus or via the electrical control line.
  17. 17. The method according to claim 15 or 16, wherein, In at least one second operating mode (B2, B3), control commands provided via the vehicle field bus (10) are not directly transferred from the functional component (3) to the functional component (3) via the component field bus (7).
  18. 18. The method of claim 15, wherein the step of determining the position of the probe is performed, In the first operating mode (B1), control commands received from the vehicle field bus (10) are transmitted by the control electronics (5) at least in terms of content to the component field bus (7) unchanged for controlling the relevant functional component (3).
  19. 19. The method of claim 15, wherein the step of determining the position of the probe is performed, In at least one second operating mode (B2, B3), the control unit (4) controls a plurality of functional components (3) via a component Fieldbus (7) or via an electrical control line (6) in response to at least one higher-level control command (SB) received from a vehicle Fieldbus (10), the functional components (3) being connected to the control device (4) via the component Fieldbus or via the electrical control line.

Description

Thermal management module and method of operation Technical Field The present invention relates to a thermal management module for temperature control of a motor vehicle, and to a motor vehicle comprising such a thermal management module. Furthermore, the invention relates to a method for operating such a thermal management module. Background By thermal management module is meant a device for transferring heat in a vehicle, in particular a device having an electrical energy store and an electric drive motor. In these thermal management modules, a plurality of so-called functional components are usually provided, such as electric pumps and electrically controlled valves. In addition to this, a plurality of sensors, in particular pressure sensors and temperature sensors, which generate sensor data, are often installed in such modules. There, the electrical wiring of the functional components has proven to be problematic, since careful design is often required, and thus a great deal of effort is involved. In extreme cases, each of the functional components may require separate voltage supply lines and control lines. In view of the installation space (in particular in motor vehicles) being available only in conditional situations, this means not only high material costs, but also high installation costs when the thermal management module is installed in the vehicle. Here, this proves to be particularly problematic when errors in the electrical wiring of the functional component are detected only after the installation has been completed, since correcting such errors proves to be particularly complex and therefore costly. Disclosure of Invention It is therefore an object of the present invention to create an improved or at least alternative embodiment for a thermal management module which takes into account the above-mentioned problems. In particular, thermal management modules with particularly simple electrical wiring will be created in order to reduce installation costs and budgets for producing such thermal management modules. The basic idea of the invention is thus to realize the electrical control of the above-mentioned thermal management module of an electrical wiring and connected thereto in a modular manner. For this purpose, it is proposed to realize the electrical wiring, in particular the electrical connection of the individual functional components of the module, to the voltage source of the motor vehicle and to the field bus (in particular the CAN bus) of the motor vehicle by means of a common electrical control unit with a control electronics system. This means that the electrical control and voltage supply of all functional components included in the thermal management module can be performed by the control unit. Such a control unit according to the invention is equipped with a control electronic system comprising electronic and/or electrical elements that can be connected to the field bus of the motor vehicle using a thermal management module (hereinafter "vehicle field bus"). The control unit is connected in a data transmission manner to one, two or more functional components via a so-called component field bus, in particular via a LIN bus. Thus, the control of the functional components can be performed substantially independently by the control unit. The control of the control unit can be performed by means of a vehicle fieldbus connected to the control unit. Thus, higher-level control commands can be sent over the vehicle fieldbus to the control unit, which can be assigned to a specific functional module of the thermal management module. The individual control of the functional components required for achieving the respective operating states can be taken over by the control electronics of the control unit without communication with the vehicle fieldbus for this purpose. In addition to controlling the functional components via the component fieldbus, it is also conceivable for the control electronics to provide an electrical control line (also referred to below as "control line path") via which the control unit or its control electronics can be electrically connected to the respective functional components. On the one hand, this can be an electrical control circuit, by means of which control signals can be transmitted from the control unit to the respective component carrier, for example a valve or a pump. On the other hand, these control lines can also be signal and/or sensor lines, by means of which information is transmitted from the respective functional component (for example a temperature sensor or a pressure sensor) to the control unit. The control unit itself can be equipped with electrical connections, which in turn can comprise suitable plug connections, which are electrically connected to the motor vehicle on the input side and to the functional components on the output side. According to the invention, the electrical wiring via the common control unit proposed for this purpose ena