Thermal management system and vehicle

Abstract

The application discloses a kind of thermal management system and vehicle, thermal management system includes: battery temperature control loop, chiller heat exchanger is equipped on the battery temperature control loop;Electric drive temperature control loop, condenser and radiator are equipped on the electric drive temperature control loop, the condenser can be exchanged with the chiller heat exchanger, bypass pipeline is equipped in parallel on the electric drive temperature control loop, the condenser and radiator are located at the same side of the bypass pipeline, switch piece is equipped on the bypass pipeline, to open or close the bypass pipeline.The thermal management system of the application can reduce the flow resistance on the system loop, and bring larger flow to the system loop when the vehicle is in super fast charging mode, meet the system heat dissipation demand, the whole system structure is simple, and the use cost is relatively low.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and in particular to a thermal management system and vehicle. Background Technology

[0002] Current water-cooled condenser thermal management system solutions are limited by system flow rate, making it impossible to increase system flow rate to improve heat dissipation from the battery, or requiring significant investment to develop high-pressure water circulation systems and high-lift water pumps.

[0003] Currently, in order to reduce users' charging waiting time, new energy vehicles have developed power batteries that can achieve super-fast charging, which can be fully charged in just 15-10 minutes. However, under this super-fast charging condition, the highest performance water-cooled condensers and water pumps currently on the market can no longer meet the heat dissipation requirements of the power battery. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a thermal management system that can reduce the flow resistance in the system loop, bring a relatively large flow rate to the system loop, and meet the system's heat dissipation requirements.

[0005] The present invention also aims to provide a vehicle for applying the above-described thermal management system.

[0006] A thermal management system according to an embodiment of the present invention includes: a battery temperature control circuit, wherein a chiiller heat exchanger is provided on the battery temperature control circuit; an electric drive temperature control circuit, wherein a condenser and a radiator are provided on the electric drive temperature control circuit, wherein the condenser can exchange heat with the chiiller heat exchanger, a bypass pipeline is provided in parallel on the electric drive temperature control circuit, wherein the condenser and the radiator are located on the same side of the bypass pipeline, and a switch is provided on the bypass pipeline to open or close the bypass pipeline.

[0007] According to the thermal management system of the present invention, by setting a bypass pipeline in parallel on the electric drive temperature control circuit, the flow resistance on the system circuit can be reduced, and a relatively large flow can be brought to the system circuit when the vehicle is in super fast charging mode to meet the system heat dissipation requirements. The whole system has a simple structure and low operating cost.

[0008] In some embodiments, the switch has a first interface, a second interface, and a third interface, the first interface and the third interface being connected to the electric drive temperature control circuit, and the second interface being connected to the bypass pipeline.

[0009] In some embodiments, the switching element is a proportional control valve.

[0010] In some embodiments, the electric drive temperature control circuit includes an electric drive controller, a drive motor, and a first pump. The switch is located between the drive motor and the first pump, and the first pump and the radiator are located on the same side of the bypass pipeline.

[0011] In some embodiments, the thermal management system further includes a first four-way valve and a second four-way valve. The first four-way valve is located between the electric drive control unit and the condenser. Two ports of the first four-way valve are connected to the electric drive temperature control circuit, and the other two ports are connected to the battery temperature control circuit. The second four-way valve is located between the radiator and the condenser. Two ports of the second four-way valve are connected to the electric drive temperature control circuit, and the other two ports are connected to the battery temperature control circuit. A power battery is provided on the battery temperature control circuit, and the power battery is located between the first four-way valve and the second four-way valve.

[0012] In some embodiments, a second pump is provided on the battery temperature control circuit, and the second pump is located between the power battery and the second four-way valve.

[0013] In some embodiments, a heater pump is provided on the electric drive temperature control circuit, and the heater pump is located between the condenser and the second four-way valve.

[0014] In some embodiments, a heater core is connected in parallel on the electric drive temperature control circuit, with one end of the heater core located between the heater pump and the second four-way valve, and the other end located between the condenser and the first four-way valve.

[0015] In some embodiments, one end of the bypass line is located near the condenser, and the other end is located near the radiator.

[0016] The vehicle according to an embodiment of the present invention includes the thermal management system described above.

[0017] According to an embodiment of the present invention, by setting up this thermal management system, the flow resistance in the circulation loop can be reduced, the flow rate of coolant can be increased, and the high heat dissipation requirements of the vehicle in fast charging mode and super fast charging mode can be met.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the thermal management system in an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the thermal management system in an embodiment of the present invention. Figure 2 .

[0022] Figure label:

[0023] 100. Thermal management system;

[0024] 10. Battery temperature control circuit; 101. Chiller heat exchanger; 102. Power battery; 103. Second pump;

[0025] 20. Electric drive temperature control circuit; 201. Condenser; 202. Radiator; 203. Bypass pipe; 204. Switch; 2041. First interface; 2042. Second interface; 2043. Third interface; 205. Electric drive control unit; 206. Drive motor; 207. First pump; 208. Heater pump; 209. Heater core;

[0026] 30. First four-way valve; 40. Second four-way valve. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis.

[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] The following is for reference. Figures 1-2 The following describes a thermal management system 100 according to an embodiment of the present invention.

[0032] like Figure 1 As shown, the thermal management system 100 according to an embodiment of the present invention includes: a battery temperature control circuit 10 and an electric drive temperature control circuit 20.

[0033] The battery temperature control circuit 10 is equipped with a chiiller heat exchanger 101. The electric drive temperature control circuit 20 is equipped with a condenser 201 and a radiator 202. The condenser 201 can exchange heat with the chiiller heat exchanger 101. A bypass pipe 203 is connected in parallel on the electric drive temperature control circuit 20. The condenser 201 and the radiator 202 are located on the same side of the bypass pipe 203. A switch 204 is provided on the bypass pipe 203 to open or close the bypass pipe 203.

[0034] It can be understood that the thermal management system 100 of the present invention can realize two modes of thermal management.

[0035] Mode 1: When the vehicle is in motion, the motor and battery need to dissipate heat at the same time. At this time, the switch 204 is in the closed state, the bypass pipe 203 remains closed, the battery temperature control circuit 10 dissipates heat from the battery through the chiller heat exchanger 101, and the electric drive temperature control circuit 20 dissipates heat from the motor through the condenser 201 and the radiator 202.

[0036] Mode 2: When the vehicle is in super-fast charging mode, the motor does not have a high heat dissipation requirement, but the battery has a relatively high heat dissipation requirement. At this time, the switch 204 is opened, and the bypass pipe 203 remains open. The bypass pipe 203, condenser 201 and radiator 202 form a short-circuit circuit with a relatively short stroke. The flow resistance of the short-circuit circuit is relatively low, which can meet the high flow rate requirement. The condenser 201 can accelerate the heat exchange with the chiller heat exchanger 101 and improve the heat exchange efficiency of the battery temperature control circuit 10 to the battery.

[0037] It should be noted that the condenser 201 and the chiller heat exchanger 101 can be understood as heat exchangers in the vehicle's air conditioning system to achieve temperature regulation inside the vehicle. The air conditioning system may also include components such as a compressor. Other components and operations of the air conditioning system are known to those skilled in the art and will not be described in detail here.

[0038] Condenser 201 can refer to a water-cooled condenser or other types of condensers; there is no limitation here.

[0039] According to the thermal management system 100 of the present invention, by setting a bypass pipe 203 in parallel on the electric drive temperature control circuit 20, the flow resistance on the system circuit can be reduced, and when the vehicle is in super fast charging mode, it can bring a relatively large flow to the system circuit to meet the system heat dissipation requirements. The whole system has a simple structure and low operating cost.

[0040] In some embodiments, such as Figure 1 As shown, the switch 204 has a first interface 2041, a second interface 2042, and a third interface 2043. The first interface 2041 and the third interface 2043 are connected to the electric drive temperature control circuit 20, and the second interface 2042 is connected to the bypass pipe 203. That is, when the second interface 2042 and the third interface 2043 are connected and the first interface 2041 and the third interface 2043 are disconnected, the thermal management system 100 can operate in mode two. Furthermore, mode three can also be achieved through the first interface 2041, the second interface 2042, and the third interface 2043 of the switch 204.

[0041] In Mode 3: The vehicle is in fast charging mode, and the motor does not have high heat dissipation requirements, but the electric drive control component 205 of the motor still needs to be cooled. The electric drive control component 205 can refer to a DC-DC accessory. The second interface 2042 and the third interface 2043 are connected, and the first interface 2041 and the third interface 2043 are connected. The electric drive temperature control circuit 20 can not only cool the electric drive control component 205, but also accelerate the heat exchange between the condenser 201 and the chiller heat exchanger 101 through the short-circuit circuit formed by the bypass pipe 203, the condenser 201 and the radiator 202, so as to cool the battery and meet the high heat dissipation requirements of the battery in fast charging mode.

[0042] In some embodiments, the switch 204 is a proportional regulating valve. The proportional regulating valve can adjust the flow rate between the second interface 2042 and the third interface 2043, and between the first interface 2041 and the third interface 2043, proportionally in Mode 3. For example, since the heat dissipation requirements of the control components are relatively small, while the heat dissipation requirements of the battery are relatively large, the flow rate between the first interface 2041 and the third interface 2043 can be adjusted to a small flow rate, and the flow rate between the second interface 2042 and the third interface 2043 can be adjusted to a large flow rate, thereby increasing the flow rate and meeting greater fast charging demands.

[0043] In some embodiments, such as Figure 2 As shown, the switch 204 is a switching valve, which is located on the bypass line 203. In other words, the bypass line 203 can be directly connected to the electric drive temperature control circuit 20. The switch 204 only needs to control the opening or closing of the bypass line 203, which only needs to satisfy mode one and mode two.

[0044] Specifically, the switch element 204 can be a shut-off valve or an SOV valve.

[0045] In some embodiments, such as Figure 1 , Figure 2 As shown, the electric drive temperature control circuit 20 is equipped with an electric drive control unit 205, a drive motor 206, and a first pump 207. A switch 204 is located between the drive motor 206 and the first pump 207. The first pump 207 and the radiator 202 are located on the same side of the bypass pipe 203. The first pump 207 is in a short-circuit circuit formed by the bypass pipe 203, the condenser 201, and the radiator 202. When the short-circuit circuit is working, the first pump 207 can drive the coolant to flow in the circuit.

[0046] Specifically, when the coolant in the short-circuit circuit is water, the first pump 207 can refer to a water pump. Since the bypass pipe 203 can shorten the stroke of the short-circuit circuit and reduce the flow resistance, the flow rate requirement under higher heat dissipation in a shorter charging time can be met by adjusting the power of the water pump.

[0047] In some embodiments, such as Figure 1 , Figure 2 As shown, the thermal management system 100 also includes a first four-way valve 30 and a second four-way valve 40. The first four-way valve 30 is located between the electric drive control unit 205 and the condenser 201. Two valve ports of the first four-way valve 30 are connected to the electric drive temperature control circuit 20, and the other two valve ports are connected to the battery temperature control circuit 10. The second four-way valve 40 is located between the radiator 202 and the condenser 201. Two valve ports of the second four-way valve 40 are connected to the electric drive temperature control circuit 20, and the other two valve ports are connected to the battery temperature control circuit 10. A power battery 102 is provided on the battery temperature control circuit 10, and the power battery 102 is located between the first four-way valve 30 and the second four-way valve 40.

[0048] The thermal management system 100 not only cools the power battery 102 and the drive motor 206, but also heats them. The flow path of the coolant in the battery temperature control circuit 10 and the electric drive temperature control circuit 20 can be adjusted via the first four-way valve 30 and the second four-way valve 40, thereby improving the energy efficiency ratio.

[0049] For example, the first four-way valve 30 and the second four-way valve 40 connect the battery temperature control circuit 10 and the electric drive temperature control circuit 20, which can form a closed-loop first preheating circuit with the power battery 102, the first four-way valve 30, the condenser 201 and the second four-way valve 40, and can heat the power battery 102.

[0050] The first four-way valve 30 and the second four-way valve 40 connect the battery temperature control circuit 10 and the electric drive temperature control circuit 20, which can form a closed-loop second preheating circuit consisting of the drive motor 206, the electric drive control unit 205, the first four-way valve 30, the chiller heat exchanger 101, the second four-way valve 40, and the radiator 202, thereby heating the drive motor 206.

[0051] In some embodiments, such as Figure 1 , Figure 2 As shown, a heater pump 208 is provided on the electric drive temperature control circuit 20. The heater pump 208 is located between the condenser 201 and the second four-way valve 40. The heater pump 209 is used to drive the coolant to flow in the second preheating circuit.

[0052] In some embodiments, such as Figure 1 , Figure 2 As shown, a heater core 209 is connected in parallel on the electric drive temperature control circuit 20. One end of the heater core 209 is located between the heater pump 208 and the second four-way valve 40, and the other end is located between the condenser 201 and the first four-way valve 30. The heater core 209 can be heated to generate heat, so that the coolant passing through it is heated.

[0053] In some embodiments, such as Figure 1 , Figure 2 As shown, a second pump 103 is provided on the battery temperature control circuit 10. The second pump 103 is located between the power battery 102 and the second four-way valve 40. The second pump 103 is used to drive the coolant in the battery temperature control circuit 10 to flow.

[0054] In some embodiments, one end of the bypass pipe 203 is located near the condenser 201, and the other end is located near the radiator 202. That is, the bypass pipe 203 is located close to the condenser 201 and the radiator 202, which makes the short-circuit loop formed by the bypass pipe 203, the condenser 201 and the radiator 202 shorter, and thus reduces the flow resistance of the loop.

[0055] The vehicle according to an embodiment of the present invention includes the thermal management system 100 described above.

[0056] The vehicle can refer to a pure electric vehicle or a hybrid vehicle. The thermal management system can manage the thermal of the vehicle's power battery and motor to ensure the normal operation of the vehicle.

[0057] According to an embodiment of the present invention, by setting the thermal management system 100, the flow resistance in the circulation loop can be reduced and the flow rate of coolant can be increased, thereby meeting the high heat dissipation requirements of the vehicle in fast charging mode and super fast charging mode.

[0058] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that, include: A battery temperature control circuit, wherein a chiller heat exchanger is provided; An electric drive temperature control circuit includes a condenser and a radiator. The condenser can exchange heat with a chiiller heat exchanger. A bypass pipe is connected in parallel to the electric drive temperature control circuit. The condenser and radiator are located on the same side of the bypass pipe. A switch is provided on the bypass pipe to open or close it. The switch has a first interface, a second interface, and a third interface. The first interface and the third interface are connected to the electric drive temperature control circuit, and the second interface is connected to the bypass pipe. When the bypass pipe is opened, the bypass pipe, the condenser, and the radiator form a short-circuit circuit. The electric drive temperature control circuit is provided with an electric drive control unit, a drive motor and a first pump, the switch is located between the drive motor and the first pump, and the first pump and the radiator are located on the same side of the bypass pipe. The thermal management system further includes a first four-way valve and a second four-way valve. The first four-way valve is located between the electric drive control unit and the condenser. Two valve ports of the first four-way valve are connected to the electric drive temperature control circuit, and the other two valve ports are connected to the battery temperature control circuit. The second four-way valve is located between the radiator and the condenser. Two valve ports of the second four-way valve are connected to the electric drive temperature control circuit, and the other two valve ports are connected to the battery temperature control circuit. The battery temperature control circuit is equipped with a power battery, which is located between the first four-way valve and the second four-way valve.

2. The thermal management system according to claim 1, characterized in that, The switching device is a proportional regulating valve.

3. The thermal management system according to claim 1, characterized in that, The battery temperature control circuit is equipped with a second pump, which is located between the power battery and the second four-way valve.

4. The thermal management system according to claim 1, characterized in that, The electric drive temperature control circuit is equipped with a heater pump, which is located between the condenser and the second four-way valve.

5. The thermal management system according to claim 4, characterized in that, A heater core is connected in parallel on the electric drive temperature control circuit. One end of the heater core is located between the heater pump and the second four-way valve, and the other end is located between the condenser and the first four-way valve.

6. The thermal management system according to claim 1, characterized in that, One end of the bypass pipe is located near the condenser, and the other end is located near the radiator.

7. A vehicle, characterized in that, The thermal management system includes any one of claims 1 to 6.

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