Thermal management device for vehicle, control method for thermal management device, and vehicle

Abstract

The invention discloses a heat management device for a vehicle, a control method for the heat management device and the vehicle. The heat management device comprises a first heat exchange loop; at least part of the second heat exchange loop selectively exchanges heat with the first heat exchange loop; at least part of the third heat exchange loop selectively exchanges heat with the second heat exchange loop; the fourth heat exchange loop is provided with an on-off valve so that at least part of the fourth heat exchange loop can selectively exchange heat with the first heat exchange loop; and the fifth heat exchange loop and the sixth heat exchange loop are both selectively communicated with the first heat exchange loop. The energy in the multiple heat exchange loops is coupled and utilized, so that the thermal management energy consumption of the whole vehicle is reduced.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a thermal management device for a vehicle, a control method for the thermal management device, and a vehicle. Background Art

[0002] As an easily available clean energy, hydrogen energy is accepted by most countries and energy companies in the world for its easy preparation, high calorific value and environmental friendliness. It has become a key to the development trend of clean energy and a key development direction of new energy. Hydrogen fuel cell vehicles are an important development direction of new energy in the future. In order to enable fuel cell vehicles to adapt to various complex environmental conditions and achieve the lowest energy consumption, it is necessary to design a thermal management system for fuel cell vehicles.

[0003] In the related technologies, the thermal management functions of the whole vehicle can be divided into passenger compartment thermal management, fuel cell stack thermal management, battery thermal management and motor electronic control thermal management. The existing thermal management system has low integration, and the energy between the systems cannot be effectively utilized. The battery thermal management system can only be cooled by refrigerant circulation, and cannot be cooled by the cooling radiator. The heating can only be heated by the electric heater, and the waste heat of the fuel cell stack and the motor electronic control cannot be used. The heating of the passenger compartment cannot use the waste heat of the fuel cell stack, etc., resulting in high energy consumption of the whole vehicle. It simply meets the functional requirements, and does not fully consider the energy coupling relationship between the various systems, so the energy of the whole vehicle is not fully utilized.

[0004] Therefore, how to systematically utilize the energy coupling between various thermal management systems to reduce the energy consumption of the entire vehicle has become an urgent problem to be solved in this field. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a thermal management device for a vehicle. The present application reduces the thermal management energy consumption of the whole vehicle by coupling and utilizing the energy in multiple heat exchange circuits.

[0006] The present invention also provides a control method for the thermal management device.

[0007] The present invention also provides a vehicle comprising the thermal management device.

[0008] The thermal management device for a vehicle according to the present invention comprises: a first heat exchange circuit, on which a first heat exchanger, a second heat exchanger and a battery cell are provided, which are connected to each other; a second heat exchange circuit, on which a first passenger compartment heat exchanger and a third heat exchanger are provided, which are connected to each other, and at least a portion of the second heat exchange circuit can selectively exchange heat with the first heat exchange circuit through the second heat exchanger; a third heat exchange circuit, on which a fuel cell stack heat exchange pipeline and a first outdoor heat exchanger are provided, and at least a portion of the third heat exchange circuit can selectively exchange heat with the first heat exchange circuit through the second heat exchanger; selectively performing heat exchange with the second heat exchange circuit through the third heat exchanger; a fourth heat exchange circuit, wherein the fourth heat exchange circuit is provided with an on-off valve, and the on-off valve can selectively control at least partial conduction or disconnection of the fourth heat exchange circuit to control the heat exchange medium of the first heat exchanger to perform heat exchange with the first heat exchange circuit; a fifth heat exchange circuit and a sixth heat exchange circuit, wherein the fifth heat exchange circuit flows through the heat exchange channel of the drive unit, and the sixth heat exchange circuit is provided with a third outdoor heat exchanger, and the fifth heat exchange circuit and the sixth heat exchange circuit can both be selectively connected to the first heat exchange circuit.

[0009] According to the thermal management device of the present invention, a first heat exchanger and a second heat exchanger connected to each other are arranged in a first heat exchange circuit, and the heat exchange medium exchanges heat with the first heat exchanger and the second heat exchanger, thereby realizing temperature regulation of the first heat exchange circuit, that is, realizing temperature regulation of the battery system and the battery cell; a first passenger compartment heat exchanger and a third heat exchanger connected to each other are arranged on the second heat exchange circuit, and the second heat exchange circuit can exchange heat with the third heat exchange circuit through the third heat exchanger, and the fourth heat exchange circuit can exchange heat with the second heat exchange circuit, and the fourth heat exchange circuit can realize heat exchange with the first heat exchange circuit through an on-off valve, and the fifth heat exchange circuit and the sixth heat exchange circuit can selectively exchange heat with the first heat exchange circuit, thereby realizing that multiple heat exchange circuits in the thermal management device can be coupled with each other, thereby improving the energy utilization efficiency of the thermal management device and reducing energy consumption.

[0010] According to one embodiment of the present invention, the thermal management device also includes: a first valve body, the first valve body is provided with a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, and a sixth valve port which are selectively connected to each other, the first valve port and the second valve port are respectively connected to the first heat exchange circuit, the third valve port and the fourth valve port are respectively connected to the fifth heat exchange circuit, the fifth valve port and the sixth valve port are respectively connected to the sixth heat exchange circuit, and the first valve body can selectively connect the fifth heat exchange circuit and / or the sixth heat exchange circuit with the first heat exchange circuit.

[0011] According to one embodiment of the present invention, the thermal management device further includes: a first heater, the first heater is selectively connected to the third heat exchange circuit, and the first heater is connected in parallel with the fuel cell stack heat exchange pipeline.

[0012] According to one embodiment of the present invention, the third heat exchange circuit includes: a first main circuit, which is respectively connected to the fuel cell stack heat exchange pipeline and the first outdoor heat exchanger; a first branch, which is selectively connected to the first main circuit, and at least a portion of the first branch flows through the third heat exchanger and exchanges heat with the second heat exchange circuit.

[0013] According to one embodiment of the present invention, the third heat exchange circuit also includes: a second valve body, the second valve body includes a first connecting valve port, a second connecting valve port and a third connecting valve port, the first connecting valve port is connected to the fuel cell stack heat exchange pipeline, the second connecting valve port is connected to the first outdoor heat exchanger and the first branch, and the third connecting valve port is connected to the first heater.

[0014] According to one embodiment of the present invention, the second heat exchange circuit includes: a third valve body, the third valve body is provided with a first connecting valve port, a second connecting valve port and a third connecting valve port which are selectively connected to each other, the first connecting valve port is connected to the outlet of the first passenger compartment heat exchanger, the second connecting valve port is connected to the outlet of the second heat exchanger and the inlet of the third heat exchanger, and the third connecting valve port is connected to the inlet of the second heat exchanger.

[0015] According to one embodiment of the present invention, the thermal management device further includes: a second heater, the second heater is arranged in the second heat exchange circuit, and the second heater is connected in series with the first passenger compartment heat exchanger and the third heat exchanger.

[0016] According to one embodiment of the present invention, the fourth heat exchange circuit includes: a second outdoor heat exchanger; a third branch, on which a second passenger compartment heat exchanger is disposed, and the second outdoor heat exchanger and the second passenger compartment heat exchanger are connected in series with each other; a fourth branch, which can be selectively connected to the first heat exchanger and makes the second outdoor heat exchanger connected in series with the first heat exchanger, and the fourth branch is provided with the on-off valve.

[0017] According to one embodiment of the present invention, the drive unit heat exchange channel includes: a first drive unit heat exchange channel, the first drive unit heat exchange channel is configured as a channel formed in a drive motor housing, and the first drive unit heat exchange channel is suitable for circulating heat exchange medium to exchange heat for the drive motor housing; a second drive unit heat exchange channel, the second drive unit heat exchange channel is configured as a channel formed in an electric drive controller housing, and the second drive unit heat exchange channel is suitable for circulating heat exchange medium to exchange heat for the electric drive controller housing; wherein the first drive unit heat exchange channel and the second drive unit heat exchange channel are connected in series with each other.

[0018] According to one embodiment of the present invention, a seventh valve port is provided on the first valve body, and the seventh valve port can be selectively connected with at least one of the first valve port, the second valve port, the third valve port, the fourth valve port, the fifth valve port, and the sixth valve port; the thermal management device also includes: an expansion water tank, and the outlet of the expansion water tank is connected with the seventh valve port.

[0019] The following briefly describes a control method for a thermal management device according to another embodiment of the present invention.

[0020] According to the control method for a thermal management device of the present invention, by controlling the energy coupling transfer between the first heat exchange loop, the second heat exchange loop and the third heat exchange loop, it is possible to more efficiently fully utilize the heat of the fuel cell stack to heat the passenger compartment and the battery. When the temperature of the battery cell is too high, the first heat exchanger and the second heat exchanger in the first heat exchange loop can be used to exchange heat for the battery cell. The first heat exchange loop can be connected with the fourth heat exchange loop to cool the battery cell. The first heat exchange loop, the fifth heat exchange loop and the sixth heat exchange loop can also be connected through the first valve body to achieve temperature control by utilizing the energy coupling between multiple heat exchange loops. When the heat dissipation of the fuel cell stack is insufficient, the third heat exchange loop can be connected with the second heat exchange loop and transfer heat to the second heat exchange loop. Both the first heat exchange loop and the fourth heat exchange loop can cool the second heat exchange loop and the third heat exchange loop to ensure the safe operation of the fuel cell stack. According to the control method for a thermal management device of the present invention, the coupling utilization rate between the various loops is improved, and the energy consumption of the system is reduced.

[0021] A vehicle according to another embodiment of the present invention will be briefly described below.

[0022] The vehicle according to the present invention includes the thermal management device described in any one of the above embodiments. Since the vehicle according to the present invention includes the thermal management device described in any one of the above embodiments, the coupling utilization rate between the thermal management systems of the vehicle according to the present invention is higher and the vehicle energy consumption is lower.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a system framework diagram of a thermal management device according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of a control method for a thermal management device according to an embodiment of the present invention;

[0027] Figure 3 is a flow chart of a control method for a thermal management device according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] Thermal management device 1;

[0030] A first heat exchange circuit 11, a first heat exchanger 111, a second heat exchanger 112, and a battery cell 113;

[0031] The second heat exchange circuit 12, the first passenger compartment heat exchanger 121, the third heat exchanger 122, and the second heater 123;

[0032] A third heat exchange loop 13, a first outdoor heat exchanger 131, a fuel cell stack heat exchange pipeline 132, a first heater 133, and an electrically controlled switch valve 134;

[0033] The fourth heat exchange circuit 14, the second outdoor heat exchanger 141, the second passenger compartment heat exchanger 142, and the on-off valve 143;

[0034] A fifth heat exchange circuit 15, a drive motor 151, and an electric drive controller 152;

[0035] The sixth heat exchange circuit 16, the third outdoor heat exchanger 161;

[0036] A first valve body 171, a first valve port 1711, a second valve port 1712, a third valve port 1713, a fourth valve port 1714, a fifth valve port 1715, a sixth valve port 1716, and a seventh valve port 1717;

[0037] The second valve body 172, the first connecting valve port 1721, the second connecting valve port 1722, and the third connecting valve port 1723;

[0038] The third valve body 173, the first communication valve port 1731, the second communication valve port 1732, and the third communication valve port 1733;

[0039] Expansion water tank 18; Water pump 19. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] As an easily available clean energy, hydrogen energy is accepted by most countries and energy companies in the world for its easy preparation, high calorific value and environmental friendliness. It has become a key to the development trend of clean energy and a key development direction of new energy. Hydrogen fuel cell vehicles are an important development direction of new energy in the future. In order to enable fuel cell vehicles to adapt to various complex environmental conditions and achieve the lowest energy consumption, it is necessary to design a thermal management system for fuel cell vehicles.

[0042] In the related technologies, the thermal management functions of the whole vehicle can be divided into passenger compartment thermal management, fuel cell stack thermal management, battery thermal management and motor electronic control thermal management. The existing thermal management system has low integration, and the energy between the systems cannot be effectively utilized. The battery thermal management system can only be cooled by refrigerant circulation, and cannot be cooled by the cooling radiator. The heating can only be heated by the electric heater, and the waste heat of the fuel cell stack and the motor electronic control cannot be used. The heating of the passenger compartment cannot use the waste heat of the fuel cell stack, etc., resulting in high energy consumption of the whole vehicle. It simply meets the functional requirements, and does not fully consider the energy coupling relationship between the various systems, so the energy of the whole vehicle is not fully utilized.

[0043] Therefore, how to systematically utilize the energy coupling between various thermal management systems to reduce the energy consumption of the entire vehicle has become an urgent problem to be solved in this field.

[0044] Reference below Figure 1-Figure 3 A thermal management device 1 according to an embodiment of the present invention is described.

[0045] The thermal management device 1 for a vehicle according to the present invention comprises a first heat exchange loop 11, a second heat exchange loop 12, a third heat exchange loop 13, a fourth heat exchange loop 14, a fifth heat exchange loop 15 and a sixth heat exchange loop 16. The first heat exchange loop 11 is provided with a first heat exchanger 111, a second heat exchanger 112 and a battery cell 113 which are connected to each other; the second heat exchange loop 12 is provided with a first passenger compartment heat exchanger 121 and a third heat exchanger 122 which are connected to each other, and at least a part of the second heat exchange loop 12 can selectively exchange heat with the first heat exchange loop 11 through the second heat exchanger 112; the third heat exchange loop 13 is provided with a fuel cell stack heat exchange pipeline 132 and a first outdoor heat exchanger 131 which are connected to each other, and the third heat exchanger 122 is provided with a first passenger compartment heat exchanger 121 and a third heat exchanger 122 which are connected to each other. At least part of the three heat exchange circuits 13 can selectively exchange heat with the second heat exchange circuit 12 through the third heat exchanger 122; the fourth heat exchange circuit 14 is provided with a second outdoor heat exchanger 141 and a second passenger compartment heat exchanger 142 which are connected to each other, and the fourth heat exchange circuit 14 is provided with an on-off valve 143, which can selectively control at least part of the fourth heat exchange circuit 14 to be turned on or off, so as to control the heat exchange medium of the first heat exchanger 111 to exchange heat with the first heat exchange circuit 11; the fifth heat exchange circuit 15 flows through the drive unit heat exchange channel, and the sixth heat exchange circuit 16 is provided with a third outdoor heat exchanger 161, and the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16 can both be selectively connected to the first heat exchange circuit 11.

[0046] Specifically, the first heat exchange circuit 11 is provided with a first heat exchanger 111 and a second heat exchanger 112, the first heat exchanger 111 and the second heat exchanger 112 are connected in series with the battery cell 113, the heat exchange medium in the first heat exchange circuit 11 flows and exchanges heat with the first heat exchanger 111 and the second heat exchanger 112 and the battery cell 113, thereby realizing cooling and heating of the battery cell 113; the second heat exchange circuit 12 is provided with a first passenger compartment heat exchanger 121 and a third heat exchanger 122 which are connected to each other, the heat exchange medium in the second heat exchange circuit 12 flows and exchanges heat with the first passenger compartment heat exchanger 121 and the third heat exchanger 122, thereby realizing heating of the passenger compartment, wherein the second heat exchange circuit 1 At least a portion of the third heat exchange loop 13 can be selectively connected to the second heat exchanger 112, thereby realizing heat exchange between the first heat exchange loop 11 and the second heat exchange loop 12, that is, heat exchange between the passenger compartment thermal management system and the battery thermal management system; a fuel cell stack heat exchange pipeline 132 and a first outdoor heat exchanger 131 that are connected to each other are provided on the third heat exchange loop 13, the fuel cell stack heat exchange pipeline 132 is connected to the fuel cell stack, and the heat exchange medium in the third heat exchange loop 13 flows and exchanges heat with the fuel cell stack and the first outdoor heat exchanger 131, wherein at least a portion of the third heat exchange loop 13 can be selectively connected to the third heat exchanger 122, thereby realizing heat exchange between the third heat exchange loop 13 and the second heat exchange loop 12 The heat exchange between the fuel cell stack thermal management system and the passenger compartment thermal management system is realized; the fourth heat exchange loop 14 is provided with a second outdoor heat exchanger 141 and a second passenger compartment heat exchanger 142, and the heat exchange medium circulating in the second heat exchange loop 12 exchanges heat with the second outdoor heat exchanger 141 and the second passenger compartment heat exchanger 142 to achieve cooling of the passenger compartment. The fourth heat exchange loop 14 is provided with an on-off valve 143, wherein the on-off valve 143 can be constructed as an electronic expansion valve, and the on-off valve 143 can selectively control at least part of the fourth heat exchange loop 14 to be turned on or off. When the on-off valve 143 controls at least part of the fourth heat exchange loop 14 to be closed, The fourth heat exchange loop 14 can realize the circulation of the heat exchange medium between the second outdoor heat exchanger 141 and the second passenger compartment heat exchanger 142 to achieve temperature regulation of the passenger compartment. When the on-off valve 143 controls at least part of the fourth heat exchange loop 14 to be conducted, so that at least part of the fourth heat exchange loop 14 is conducted with the first heat exchanger 111, the heat exchange medium in the first heat exchanger 111 can exchange heat with the first heat exchange loop 11; the fifth heat exchange loop 15 flows through the drive unit heat exchange channel, and the drive unit heat exchange channel can be connected to the motor electronic control drive unit. The heat exchange medium in the fifth heat exchange loop 15 exchanges heat with the motor electronic control drive unit, thereby achieving thermal management of the motor electronic control system;The sixth heat exchange loop 16 is provided with a third outdoor heat exchanger 161, wherein the fifth heat exchange loop 15 can be selectively connected with the first heat exchange loop 11 and the sixth heat exchange loop 16 to realize heat exchange, and the sixth heat exchange loop 16 can be selectively connected with the first heat exchange loop 11 or the fifth heat exchange loop 15 to realize heat exchange, thereby realizing the interactive use of the battery thermal management system and the motor electronic control thermal management system. ;

[0047] According to the thermal management device 1 of the present invention, a first heat exchanger 111 and a second heat exchanger 112 are arranged in a first heat exchange loop 11, and the heat exchange medium exchanges heat with the first heat exchanger 111 and the second heat exchanger 112, thereby realizing temperature regulation of the first heat exchange loop 11, that is, realizing temperature regulation of the battery system and the battery cell 113; a first passenger compartment heat exchanger 121 and a third heat exchanger 122 are arranged in the second heat exchange loop 12, and the second heat exchange loop 12 can exchange heat with the third heat exchange loop 13 through the third heat exchanger 122, and the fourth heat exchange loop 14 can exchange heat with the second heat exchange loop 12, and the fourth heat exchange loop 14 can exchange heat with the first heat exchange loop 11 through the on-off valve 143, and the fifth heat exchange loop 15 and the sixth heat exchange loop 16 can selectively exchange heat with the first heat exchange loop 11, thereby realizing that multiple heat exchange loops in the thermal management device 1 can be coupled with each other, thereby improving the energy utilization efficiency of the thermal management device 1 and reducing energy consumption.

[0048] According to one embodiment of the present invention, the thermal management device 1 also includes a first valve body 171, and the first valve body 171 is provided with a first valve port 1711, a second valve port 1712, a third valve port 1713, a fourth valve port 1714, a fifth valve port 1715, and a sixth valve port 1716 which are selectively connected to each other. The first valve port 1711 and the second valve port 1712 are respectively connected to the first heat exchange circuit 11, the third valve port 1713 and the fourth valve port 1714 are respectively connected to the fifth heat exchange circuit 15, the fifth valve port 1715 and the sixth valve port 1716 are respectively connected to the sixth heat exchange circuit 16, and the first valve body 171 can selectively connect the fifth heat exchange circuit 15 and / or the sixth heat exchange circuit 16 with the first heat exchange circuit 11.

[0049] Specifically, a first valve body 171 is provided between the first heat exchange circuit 11, the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16, and the first valve body 171 is provided with a first valve port 1711, a second valve port 1712, a third valve port 1713, a fourth valve port 1714, a fifth valve port 1715 and a sixth valve port 1716 which can be selectively connected to each other, wherein the first valve port 1711 and the second valve port 1712 are respectively connected to the first heat exchange circuit 11, and the third valve port 1713 and the fourth valve port 1714 ... The four valve ports 1714 are respectively connected to the fifth heat exchange circuit 15, and the fifth valve port 1715 and the sixth valve port 1716 are respectively connected to the sixth heat exchange circuit 16. Since the first valve port 1711, the second valve port 1712, the third valve port 1713, the fourth valve port 1714, the fifth valve port 1715 and the sixth valve port 1716 can be selectively connected, the first heat exchange circuit 11, the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16 can be selectively connected and heat exchange can be performed.

[0050] According to the thermal management device 1 of the present invention, a first valve body 171 is arranged between the first heat exchange loop 11, the fifth heat exchange loop 15 and the sixth heat exchange loop 16, and since the first valve port 1711, the second valve port 1712, the third valve port 1713, the fourth valve port 1714, the fifth valve port 1715 and the sixth valve port 1716 on the first valve body 171 are selectively connected to each other, the valve and pipe joint structure required for connecting the first heat exchange loop 11, the fifth heat exchange loop 15 and the sixth heat exchange loop 16 are greatly reduced, the cost of the thermal management device 1 is reduced, and the installation efficiency and reliability of the thermal management device 1 are improved. Since the first valve port 1711, the second valve port 1712, the third valve port 1713, the fourth valve port 1714, the fifth valve port 1715 and the sixth valve port 1716 on the first valve body 171 are selectively connected to each other, the first heat exchange circuit 11, the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16 can realize the heat management of each circuit themselves and the heat interaction between multiple circuits, which greatly improves the flexibility of the heat management of the whole vehicle and the coupling utilization rate between each circuit, reduces energy consumption, and greatly reduces the design of pipe joints in the thermal management device 1, reduces structural costs, and improves installation efficiency.

[0051] According to an embodiment of the present invention, the thermal management device 1 further includes a first heater 133 , which is selectively connected to the third heat exchange loop 13 , and the first heater 133 is connected in parallel to the fuel cell stack heat exchange pipeline 132 .

[0052] Specifically, the first heater 133 is connected in parallel with the fuel cell stack heat exchange pipeline 132, and the first heater 133 can be selectively connected to the third heat exchange loop 13. When the ambient temperature around the fuel cell stack is too low, the first heater 133 is connected to the third heat exchange loop 13. The first heater 133 heats the fuel cell stack heat exchange pipeline 132 by heating the heat exchange medium to ensure the safe operation of the fuel cell stack.

[0053] According to one embodiment of the present invention, the third heat exchange circuit 13 includes a first main circuit and a first branch circuit, and the first main circuit is respectively connected to the fuel cell stack heat exchange pipeline 132 and the first outdoor heat exchanger 131; the first branch circuit is selectively connected to the first main circuit, and at least part of the first branch circuit flows through the third heat exchanger 122 and exchanges heat with the second heat exchange circuit 12.

[0054] Specifically, the first main loop is connected to the first outdoor heat exchanger 131 and the fuel cell stack heat exchange pipeline 132 respectively, and the heat exchange medium flowing in the first main loop exchanges heat with the first outdoor heat exchanger 131 and the fuel cell stack heat exchange pipeline 132 respectively to regulate the temperature of the fuel cell stack, and the first main loop is selectively connected to the first heater 133. When the operating environment temperature of the fuel cell stack is too low, the first heater 133 heats the fuel cell stack heat exchange pipeline 132 to ensure the safe operation of the fuel cell stack; the first branch can be selectively connected to the first main loop, and at least part of the first branch flows through the third heat exchanger 122, so that the first branch The three heat exchange loops 13 can be selectively connected to the third heat exchanger 122 through the first branch, so that the third heat exchange loop 13 can selectively exchange heat with the second heat exchange loop 12. For example, when the fuel cell stack has waste heat that can be utilized and the first heat exchange loop 11 or the second heat exchange loop 12 has a heating demand, the third heat exchange loop 13 is connected to the third heat exchanger 122 through the first branch and transfers the waste heat to the second heat exchange loop 12. The second heat exchange loop 12 can be selectively connected to the second heat exchanger 112 and transfers the heat to the first heat exchange loop 11, thereby completing the utilization of the waste heat of the fuel cell stack and improving the energy coupling efficiency between the various loops.

[0055] In some embodiments, an electrically controlled switching valve 134 is provided on the first branch to selectively connect the first branch with the first main loop. The heat in the first main loop can be transferred to the third heat exchanger 122 through the first branch. At least part of the first branch flows through the third heat exchanger 122 and exchanges heat with the second heat exchange loop 12, thereby improving the utilization efficiency of the waste heat of the fuel cell stack and reducing energy loss.

[0056] According to one embodiment of the present invention, the third heat exchange circuit 13 also includes a second valve body 172, the second valve body 172 includes a first connecting valve port 1721, a second connecting valve port 1722 and a third connecting valve port 1723, the first connecting valve port 1721 is connected to the fuel cell stack heat exchange pipeline 132, the second connecting valve port 1722 is connected to the first outdoor heat exchanger 131 and the first branch, and the third connecting valve port 1723 is connected to the first heater 133.

[0057] Specifically, the first connecting valve port 1721 is connected to the outlet of the fuel cell stack heat exchange pipeline 132, the second connecting valve port 1722 is connected to the first outdoor heat exchanger 131 and the first branch, and the third connecting valve port 1723 is connected to the first heater 133. When the ambient temperature of the fuel cell stack heat exchange pipeline 132 is too low, the outlet of the fuel cell stack heat exchange pipeline 132 is connected to the first connecting valve port 1721, the second connecting valve port 1722 is closed, and the third connecting valve port 1723 is connected to the first heater 133. The first heater 133 is the fuel cell stack heat exchange pipeline 132. Heating ensures the safe operation of the fuel cell stack; when the fuel cell stack operates normally, the third connecting valve port 1723 is closed, the outlet of the fuel cell stack heat exchange pipeline 132 is connected to the first connecting valve port 1721, the second connecting valve port 1722 is connected to the first outdoor heat exchanger 131 and the first branch, and the heat exchange medium flows through the first outdoor heat exchanger 131 and the fuel cell stack heat exchange pipeline 132 for heat exchange. The thermal management device 1 of the present application ensures the safe operation of the fuel cell stack and the circulation of the heat exchange medium in the third heat exchange loop 13 by setting the second valve body 172.

[0058] According to one embodiment of the present invention, the second heat exchange circuit 12 includes a third valve body 173, and the third valve body 173 is provided with a first connecting valve port 1731, a second connecting valve port 1732 and a third connecting valve port 1733 which can be selectively connected to each other, the first connecting valve port 1731 is connected to the outlet of the first passenger compartment heat exchanger 121, the second connecting valve port 1732 is connected to the outlet of the second heat exchanger 112 and the inlet of the third heat exchanger 122, and the third connecting valve port 1733 is connected to the inlet of the second heat exchanger 112.

[0059] Specifically, a third valve body 173 is provided on the second heat exchange circuit 12. The third valve body 173 can be constructed as an electrically controlled three-way valve. A first connecting valve port 1731, a second connecting valve port 1732 and a third connecting valve port 1733 which can be selectively connected to each other are formed on the third valve body 173. When the first connecting valve port 1731 and the second connecting valve port 1732 are opened and the third connecting valve port 1733 is closed, the heat exchange medium in the second heat exchange circuit 12 can flow through the first passenger compartment heat exchanger 121 and the third heat exchanger 122 in sequence for heat exchange. When the first connecting valve port 1731 and the third connecting valve port 1733 are opened and the second connecting valve port 1732 is closed, the second heat exchange circuit 12 can be connected to the second heat exchanger 112 and perform heat exchange with the first heat exchange circuit 11, thereby realizing the coupling connection between the passenger compartment thermal management circuit and the battery thermal management circuit, thereby improving energy utilization efficiency.

[0060] According to one embodiment of the present invention, the thermal management device 1 further includes a second heater 123 , which is disposed in the second heat exchange circuit 12 , and the second heater 123 is connected in series with the first passenger compartment heat exchanger 121 and the third heat exchanger 122 .

[0061] Specifically, a second heater 123 is provided on the second heat exchange circuit 12, and the second heater 123 heats the heat exchange medium in the second circuit. If the first connecting valve port 1731 and the second connecting valve port 1732 of the third valve body 173 are opened, and the third connecting valve port 1733 is closed, the second heater 123 only heats the second heat exchange circuit 12. If the first connecting valve port 1731 and the third connecting valve port 1733 are opened, and the second connecting valve port 1732 is closed, the second heater 123 can heat at least part of the second heat exchange circuit 12 and the first heat exchange circuit 11, so that the second heater 123 heats the passenger compartment and the battery cell 113, thereby realizing the coupled utilization between the first heat exchange circuit 11 and the second heat exchange circuit 12, improving the energy utilization efficiency, and the first heat exchange circuit 11 and the second heat exchange circuit 12 share the same second heater 123, thereby reducing the system cost.

[0062] According to one embodiment of the present invention, the fourth heat exchange circuit 14 includes a second outdoor heat exchanger 141, a third branch and a fourth branch, the third branch is provided with a second passenger compartment heat exchanger 142, the second outdoor heat exchanger 141 and the second passenger compartment heat exchanger 142 are connected in series with each other; the fourth branch can be selectively connected to the first heat exchanger 111 and the second outdoor heat exchanger 141 is connected in series with the first heat exchanger 111, and the fourth branch is provided with an on-off valve 143.

[0063] Specifically, the second outdoor heat exchanger 141 can be configured as a condenser, the second passenger compartment heat exchanger 142 can be configured as an evaporator, and a compressor can be provided in the fourth heat exchange loop 14. The compressor drives the heat exchange medium to flow through the second outdoor heat exchanger 141 and the second passenger compartment heat exchanger 142, thereby achieving cooling of the passenger compartment; the on-off valve 143 can be provided in the fourth branch, and the on-off valve 143 is opened to allow the heat exchange medium to flow through the second outdoor heat exchanger 141 and the first heat exchanger 111, thereby achieving cooling of the first heat exchange loop 11. Therefore, the fourth heat exchange loop 14 can respectively achieve cooling of the passenger compartment and the battery cell 113, and the fourth heat exchange loop 14 interacts with the second heat exchange loop 12 and the first heat exchange loop 11, respectively, thereby improving the energy utilization efficiency of the thermal management device 1.

[0064] According to one embodiment of the present invention, the drive unit heat exchange channel includes a first drive unit heat exchange channel and a second drive unit heat exchange channel, the first drive unit heat exchange channel is configured as a channel formed in the housing of the drive motor 151, and the first drive unit heat exchange channel is suitable for circulating heat exchange medium to exchange heat for the housing of the drive motor 151; the second drive unit heat exchange channel is configured as a channel formed in the housing of the electric drive controller 152, and the second drive unit heat exchange channel is suitable for circulating heat exchange medium to exchange heat for the housing of the electric drive controller 152; wherein the first drive unit heat exchange channel and the second drive unit heat exchange channel are connected in series with each other.

[0065] Specifically, at least part of the fifth heat exchange loop 15 flows through the drive unit heat exchange channel, and the drive unit heat exchange channel flows through the drive motor 151 and the electric drive controller 152 respectively through the first drive unit heat exchange channel and the second drive unit heat exchange channel, the heat exchange medium flows through the first drive unit heat exchange channel and exchanges heat with the shell of the drive motor 151, and the heat exchange medium flows through the second drive unit heat exchange channel and exchanges heat with the shell of the motor controller, thereby ensuring that the motor controller can safely and stably control the operation of the drive motor 151, wherein the fifth heat exchange loop 15 can be connected to the sixth heat exchange loop 16 through the first valve body 171, thereby realizing heat exchange between the fifth heat exchange loop 15 and the sixth heat exchange loop 16.

[0066] According to one embodiment of the present invention, a seventh valve port 1717 is provided on the first valve body 171, and the seventh valve port 1717 can be selectively connected to at least one of the first valve port 1711, the second valve port 1712, the third valve port 1713, the fourth valve port 1714, the fifth valve port 1715, and the sixth valve port 1716; the thermal management device 1 also includes: an expansion water tank 18, and the outlet of the expansion water tank 18 is connected to the seventh valve port 1717.

[0067] Specifically, the seventh valve port 1717 can be selectively connected to at least one of the first valve port 1711, the second valve port 1712, the third valve port 1713, the fourth valve port 1714, the fifth valve port 1715, and the sixth valve port 1716. The outlet of the expansion water tank 18 is connected to the seventh valve port 1717 to replenish water for the first heat exchange circuit 11 and the fifth heat exchange circuit 15. A water pump 19 can be provided in the first heat exchange circuit 11 and the fifth circuit to drive the circulation of heat exchange medium.

[0068] In some embodiments, an expansion water tank 18 and a water pump 19 are provided in the second heat exchange loop 12 and the third heat exchange loop 13. The expansion water tank 18 is suitable for replenishing water for the second heat exchange loop 12 and the third heat exchange loop 13, and the water pump 19 is suitable for driving the circulation of heat exchange medium in the second heat exchange loop 12 and the third heat exchange loop 13, thereby improving the heat exchange efficiency of the second heat exchange loop 12 and the third heat exchange loop 13.

[0069] The control method for the thermal management device 1 according to the present invention is briefly described below.

[0070] The control method for the thermal management device 1 according to the present invention includes: obtaining the water temperature of the third heat exchange circuit 13 and the battery heating signal and / or the passenger compartment heating request; controlling the third heat exchange circuit 13 to perform heat exchange with the second heat exchange circuit 12; or the second heat exchange circuit 12 to perform heat exchange with the first heat exchange circuit 11; or the third heat exchange circuit 13 to perform heat exchange with the second heat exchange circuit 12, and the second heat exchange circuit 12 to perform heat exchange with the fourth heat exchange circuit 14 and the first heat exchange circuit 11 respectively.

[0071] Specifically, the system obtains a battery heating request or a passenger compartment heating request to determine whether the first heat exchange loop 11 or the second heat exchange loop 12 needs to be heated. If the passenger compartment does not need to be heated, the second heat exchange loop 12 is closed. If the system receives a passenger compartment heating request, the second heat exchange loop 12 is first opened and it is determined whether the water temperature of the third heat exchange loop 13 meets the preset temperature. If the water temperature of the third heat exchange loop 13 does not meet the preset temperature, the second heater 123 is started and the second heat exchange loop 12 is heated. After the second heat exchange loop 12 is heated, the second heater 123 is closed. If the water temperature of the third heat exchange loop 13 meets the preset temperature, the first connecting valve port 1721 and the second connecting valve port 1722 are opened, the third connecting valve port 1723 is closed, and the electronic control The switch valve 134 is opened to transfer the heat generated by the fuel cell stack to the second heat exchange loop 12 through the first branch and the third heat exchanger 122. During this process, the first passenger compartment heat exchanger 121 is opened and heats the passenger compartment; if the system receives a battery heating request, the first connecting valve port 1731 and the third connecting valve port 1733 are opened, and the second connecting valve port 1732 is closed, so that the second heat exchange loop 12 is connected to the second heat exchanger 112, and heat exchange between the second heat exchange loop 12 and the first heat exchange loop 11 is achieved. The heat in the second heat exchange loop 12 is transferred to the first heat exchange loop 11 and heats the battery; if the system does not receive a battery heating request, the first connecting valve port 1731 and the second connecting valve port 1732 are opened, and the third connecting valve port 1733 is closed.

[0072] When the system detects that the water temperature of the third heat exchange loop 13 is too high, the third heat exchange loop 13 is opened, the first connecting valve port 1721 and the second connecting valve port 1722 are opened, the third connecting valve port 1723 is closed, the electrically controlled switch valve 134 is opened, the first outdoor heat exchanger 131 is opened and cools the second heat exchange loop 12, the second heat exchange loop 12 is connected with the third heat exchanger 122 through the first branch and transfers heat to the second heat exchange loop 12, the first connecting valve port 1731 and the third connecting valve port 1733 are opened, the second connecting valve port 1732 is closed, the heat in the second heat exchange loop 12 is transferred to the first heat exchange loop 11, the first heat exchange loop 11 is connected with the first valve port 1711 and the second valve port 1712 of the first valve body 171, the third valve port 1713 is opened, and the second heat exchange loop 11 is closed. , the fourth valve port 1714, the fifth valve port 1715 and the sixth valve port 1716 are closed, the expansion tank 18 replenishes water for the first heat exchange loop 11 through the seventh valve port 1717, the water pump 19 in the first heat exchange loop 11 drives the heat exchange medium to flow through the first heat exchanger 111 and the second heat exchanger 112 to achieve cooling, and the fourth heat exchange loop 14 connects the second outdoor heat exchanger 141 with the first heat exchanger 111 through the fourth branch to cool the first heat exchange loop 11 and the second heat exchange loop 12, and the water temperature of the third heat exchange loop 13 is reduced to a preset temperature, then the cooling of the third heat exchange loop 13 is stopped; if the first outdoor heat exchanger 131 can achieve cooling for the third heat exchange loop 13, the system only turns on the first outdoor heat exchanger 131 to cool the third heat exchange loop 13.

[0073] According to one embodiment of the present invention, the control method for the thermal management device 1 also includes: obtaining the temperature of the battery cell 113; when the temperature of the battery cell 113 is greater than the first preset temperature or the temperature of the battery cell 113 is within the first preset temperature range and the temperature of the drive motor 151 is greater than the second preset temperature, controlling the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16 to be connected to the first heat exchange circuit 11 respectively, and the first heat exchange circuit 11 exchanges heat with the fourth heat exchange circuit 14; when the temperature of the battery cell 113 is within the first preset temperature range and the temperature of the drive motor 151 is within the second preset temperature range, controlling the first heat exchange circuit 11, the fifth heat exchange circuit 15 and the sixth heat exchange circuit 16 to be connected in series; when the temperature of the drive motor 151 is lower than the minimum temperature of the second preset temperature range, controlling the first heat exchange circuit 11 to be connected to the sixth heat exchange circuit 16.

[0074] Specifically, if the temperature of the battery cell 113 obtained by the system is greater than the preset temperature or the temperature of the battery cell 113 is within the first preset interval, the system obtains the motor temperature. If the temperature of the drive motor 151 is greater than the second preset temperature, the system controls the fifth heat exchange loop 15 to be connected with the sixth heat exchange loop 16 and the first heat exchange loop 11 and cools the fifth heat exchange loop 15. The expansion water tank 18 replenishes water for the first heat exchange loop 11 through the seventh valve port 1717. The first heat exchange loop 11 actively cools down through the first heat exchanger 111 and the second heat exchanger 112, and the fourth heat exchange loop 14 is connected with the first heat exchanger 111 through the fourth branch and performs heat exchange with the first heat exchange loop 11, thereby cooling the battery cell 113. If the temperature of the battery cell 113 is greater than the second preset temperature, the system controls the fifth heat exchange loop 15 to be connected with the sixth heat exchange loop 16 and the first heat exchange loop 11 and cools the fifth heat exchange loop 15. The expansion water tank 18 replenishes water for the first heat exchange loop 11 through the seventh valve port 1717. The first heat exchange loop 11 actively cools down through the first heat exchanger 111 and the second heat exchanger 112. The fourth heat exchange loop 14 is connected with the first heat exchanger 111 through the fourth branch and performs heat exchange with the first heat exchange loop 11, thereby cooling down the battery cell 113. When the temperature of the drive motor 151 is within the first preset temperature range and the temperature of the drive motor 151 is within the second preset temperature range, the system controls the fifth heat exchange loop 15 to be connected with the sixth heat exchange loop 16 and connected in series with the first heat exchange loop 11, and the first heat exchanger 111, the second heat exchanger 112 and the third outdoor heat exchanger 161 jointly cool the first heat exchange loop 11, thereby cooling the battery cell 113; if the temperature of the drive motor 151 is lower than the minimum temperature of the second preset temperature range, the system controls the fifth heat exchange loop 15 to be closed, and connects the first heat exchange loop 11 in series with the sixth heat exchange loop 16 through the first valve body 171 to cool the battery cell 113. When the temperature of the battery cell 113 is lower than the third preset temperature, the system stops cooling the battery cell 113.

[0075] According to the control method for the thermal management device 1 of the present invention, by controlling the energy coupling transfer between the first heat exchange loop 11, the second heat exchange loop 12 and the third heat exchange loop 13, it is possible to more efficiently make full use of the heat of the fuel cell stack to heat the passenger compartment and the battery. When the temperature of the battery cell 113 is too high, the first heat exchanger 111 and the second heat exchanger 112 in the first heat exchange loop 11 can be used to exchange heat for the battery cell 113. The first heat exchange loop 11 can be connected to the fourth heat exchange loop 14 to cool the battery cell 113. The first heat exchange loop 11 can also be connected to the fourth heat exchange loop 14 through the first valve body 171. 11. The fifth heat exchange loop 15 is connected to the sixth heat exchange loop 16, and temperature control is achieved by utilizing energy coupling between multiple heat exchange loops. When the heat dissipation of the fuel cell stack is insufficient, the third heat exchange loop 13 can be connected to the second heat exchange loop 12 and transfer heat to the second heat exchange loop 12. The first heat exchange loop 11 and the fourth heat exchange loop 14 can both cool the second heat exchange loop 12 and the third heat exchange loop 13 to ensure the safe operation of the fuel cell stack. The control method for the thermal management device 1 according to the present invention improves the coupling utilization rate between the various loops and reduces the system energy consumption.

[0076] The vehicle according to the present invention will be briefly described below.

[0077] The vehicle according to the present invention includes the thermal management device 1 described in any one of the above embodiments. Since the vehicle according to the present invention includes the thermal management device 1 described in any one of the above embodiments, the coupling utilization rate between the thermal management systems of the vehicle according to the present invention is higher and the vehicle energy consumption is lower.

[0078] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0079] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0080] In the description of the present invention, "plurality" means two or more.

[0081] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0082] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management device (1) for a vehicle, characterized in that: include: A first heat exchange circuit (11), wherein the first heat exchange circuit (11) is provided with a first heat exchanger (111), a second heat exchanger (112) and a battery cell (113) which are in communication with each other; a second heat exchange circuit (12), wherein the second heat exchange circuit (12) is provided with a first passenger compartment heat exchanger (121) and a third heat exchanger (122) which are in communication with each other, and at least a portion of the second heat exchange circuit (12) can selectively perform heat exchange with the first heat exchange circuit (11) through the second heat exchanger (112); a third heat exchange circuit (13), wherein the third heat exchange circuit (13) is provided with a fuel cell stack heat exchange pipeline (132) and a first outdoor heat exchanger (131) that are in communication with each other, and at least a portion of the third heat exchange circuit (13) can selectively perform heat exchange with the second heat exchange circuit (12) through the third heat exchanger (122); a fourth heat exchange circuit (14), wherein the fourth heat exchange circuit (14) is provided with a second outdoor heat exchanger (141) and a second passenger compartment heat exchanger (142) which are connected to each other, and the fourth heat exchange circuit (14) is provided with an on-off valve (143), and the on-off valve (143) can selectively control at least part of the conduction or disconnection of the fourth heat exchange circuit (14) to control the heat exchange medium flowing through the first heat exchanger (111) to exchange heat with the first heat exchange circuit (11); a fifth heat exchange circuit (15) and a sixth heat exchange circuit (16), wherein the fifth heat exchange circuit (15) flows through a heat exchange channel of a drive unit, and the sixth heat exchange circuit (16) is provided with a third outdoor heat exchanger (161), and the fifth heat exchange circuit (15) and the sixth heat exchange circuit (16) can both selectively be connected to the first heat exchange circuit (11).

2. The thermal management device (1) for a vehicle according to claim 1, characterized in that: Also includes: A first valve body (171), wherein the first valve body (171) is provided with a first valve port (1711), a second valve port (1712), a third valve port (1713), a fourth valve port (1714), a fifth valve port (1715), and a sixth valve port (1716) which are selectively connected to each other, wherein the first valve port (1711) and the second valve port (1712) are respectively connected to the first heat exchange circuit (11), the third valve port (1713) and the fourth valve port (1714) are respectively connected to the fifth heat exchange circuit (15), and the fifth valve port (1715) and the sixth valve port (1716) are respectively connected to the sixth heat exchange circuit (16), and the first valve body (171) can selectively connect the fifth heat exchange circuit (15) and / or the sixth heat exchange circuit (16) with the first heat exchange circuit (11).

3. The thermal management device (1) for a vehicle according to claim 1, characterized in that: Also includes: A first heater (133), wherein the first heater (133) is selectively connected to the third heat exchange circuit (13), and the first heater (133) is connected in parallel to the fuel cell stack heat exchange pipeline (132).

4. The thermal management device (1) for a vehicle according to claim 3, characterized in that: The third heat exchange circuit (13) comprises: A first main circuit, the first main circuit being in communication with a fuel cell stack heat exchange pipeline (132) and the first outdoor heat exchanger (131) respectively; A first branch, the first branch is selectively connected to the first main circuit, at least a portion of the first branch flows through the third heat exchanger (122) and exchanges heat with the second heat exchange circuit (12).

5. The thermal management device (1) for a vehicle according to claim 4, characterized in that: The third heat exchange circuit (13) also includes: a second valve body (172), the second valve body (172) includes a first connecting valve port (1721), a second connecting valve port (1722) and a third connecting valve port (1723), the first connecting valve port (1721) is connected to the fuel cell stack heat exchange pipeline (132), the second connecting valve port (1722) is connected to the first outdoor heat exchanger (131) and the first branch, and the third connecting valve port (1723) is connected to the first heater (133).

6. The thermal management device (1) for a vehicle according to claim 1, characterized in that: The second heat exchange circuit (12) comprises: a third valve body (173), the third valve body (173) being provided with a first connecting valve port (1731), a second connecting valve port (1732) and a third connecting valve port (1733) which are selectively connected to each other, the first connecting valve port (1731) being connected to the outlet of the first passenger compartment heat exchanger (121), the second connecting valve port (1732) being connected to the outlet of the second heat exchanger (112) and the inlet of the third heat exchanger (122), and the third connecting valve port (1733) being connected to the inlet of the second heat exchanger (112).

7. The thermal management device (1) for a vehicle according to claim 6, characterized in that: Also includes: A second heater (123), wherein the second heater (123) is disposed in the second heat exchange circuit (12), and the second heater (123) is connected in series with the first passenger compartment heat exchanger (121) and the third heat exchanger (122).

8. The thermal management device (1) for a vehicle according to claim 1, characterized in that: The fourth heat exchange circuit (14) comprises: a second outdoor heat exchanger (141); a third branch, wherein a second passenger compartment heat exchanger (142) is disposed on the third branch, and the second outdoor heat exchanger (141) and the second passenger compartment heat exchanger (142) are connected in series with each other; A fourth branch, the fourth branch can be selectively connected to the first heat exchanger (111) so as to connect the second outdoor heat exchanger (141) and the first heat exchanger (111) in series, and the on-off valve (143) is provided on the fourth branch.

9. The thermal management device (1) for a vehicle according to claim 1, characterized in that: The drive unit heat exchange channel comprises: A first drive unit heat exchange channel, the first drive unit heat exchange channel being configured as a channel formed in a housing of a drive motor (151), the first drive unit heat exchange channel being suitable for circulating a heat exchange medium to exchange heat with the housing of the drive motor (151); A second drive unit heat exchange channel, the second drive unit heat exchange channel is configured as a channel formed in the housing of the electric drive controller (152), the second drive unit heat exchange channel is suitable for circulating a heat exchange medium to exchange heat with the housing of the electric drive controller (152); wherein The first drive unit heat exchange channel and the second drive unit heat exchange channel are connected in series.

10. The thermal management device (1) for a vehicle according to claim 2, characterized in that: The first valve body (171) is provided with a seventh valve port (1717), and the seventh valve port (1717) can be selectively connected with at least one of the first valve port (1711), the second valve port (1712), the third valve port (1713), the fourth valve port (1714), the fifth valve port (1715), and the sixth valve port (1716); The thermal management device (1) further comprises: an expansion water tank (18), wherein an outlet of the expansion water tank (18) is in communication with the seventh valve port (1717).

11. A control method for a thermal management device (1) according to any one of claims 1 to 10, characterized in that: include: Acquiring the water temperature of the third heat exchange circuit (13) and a battery heating request and / or a passenger compartment heating request; controlling the heat exchange between the third heat exchange circuit (13) and the second heat exchange circuit (12); or The second heat exchange circuit (12) exchanges heat with the first heat exchange circuit (11); or The third heat exchange circuit (13) exchanges heat with the second heat exchange circuit (12), and the second heat exchange circuit (12) exchanges heat with the fourth heat exchange circuit (14) and the first heat exchange circuit (11) respectively.

12. The control method of the thermal management device (1) according to claim 11, characterized in that: Also includes: Acquiring the temperature of the battery cell (113); When the temperature of the battery cell (113) is greater than a first preset temperature or the temperature of the battery cell (113) is within the first preset temperature range and the temperature of the drive motor (151) is greater than a second preset temperature, the fifth heat exchange circuit (15) and the sixth heat exchange circuit (16) are controlled to be connected to the first heat exchange circuit (11) respectively, and the first heat exchange circuit (11) exchanges heat with the fourth heat exchange circuit (14); When the temperature of the battery cell (113) is within a first preset temperature range and the temperature of the drive motor (151) is within a second preset temperature range, the first heat exchange circuit (11), the fifth heat exchange circuit (15) and the sixth heat exchange circuit (16) are controlled to be connected in series; When the temperature of the drive motor (151) is lower than the minimum temperature of the second preset temperature range, the first heat exchange circuit (11) is controlled to be connected to the sixth heat exchange circuit (16).

13. A vehicle, characterized in that: A thermal management device (1) comprising any one of claims 1 to 10.

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