Seat thermal management system and electric vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicle parts, and discloses a seat thermal management system and an electric vehicle, the seat thermal management system comprises a thermal management device, a main liquid inlet pipe, a main liquid outlet pipe, a first branch and a second branch; the heat management device is respectively communicated with the battery cooling pipeline through the main liquid inlet pipe and the main liquid outlet pipe to form a circulation loop and is suitable for heating or cooling the power battery; one end of the first branch is communicated with the main liquid inlet pipe through a first control valve, and the other end is communicated with an inlet of a temperature adjusting pipeline of the seat; one end of the second branch is communicated with the main liquid outlet pipe through a second control valve, and the other end is communicated with an inlet of a temperature adjusting pipeline of the seat; an outlet of the temperature adjusting pipeline of the seat is connected to the main liquid outlet pipe. According to the seat thermal management system, the temperature of the seat can be adjusted through the power battery and the thermal management device, the use energy consumption is low, and the use experience of the seat is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicle components, and in particular, to a seat thermal management system and an electric vehicle. Background Art

[0002] With the development of intelligent electric vehicles, people's requirements for the comfort of electric vehicles are also increasing. More and more electric vehicles are equipped with seat heating functions. At present, electric vehicles generally use resistance wire heating to heat the seats on the vehicle.

[0003] The disadvantages of this structure are: the energy consumption required for heating the resistance wire is high, and there is a safety risk of the resistance wire catching fire. In addition, this method cannot actively reduce the temperature of the seat, but can only turn off the resistance wire and passively wait for the seat temperature to slowly drop. The cooling speed is slow and the efficiency is low, so the user experience is poor. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a seat thermal management system and an electric vehicle, which can utilize a thermal management device and a power battery to achieve active heating and active cooling of the seat, thereby reducing energy consumption and improving the user experience of the seat.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a seat thermal management system, including:

[0007] The thermal management device is connected to the battery cooling pipeline through the main liquid inlet pipe and the main liquid outlet pipe to form a circulation loop, which is suitable for heating or cooling the power battery;

[0008] A first branch, one end of which is connected to the main liquid inlet pipe through a first control valve, and the other end of which is connected to the inlet of the temperature control pipeline of the seat;

[0009] A second branch, one end of which is connected to the main liquid outlet pipe through a second control valve, and the other end of which is connected to the inlet of the temperature control pipeline of the seat;

[0010] The outlet of the seat's temperature control line is connected to the main liquid outlet pipe.

[0011] The seat thermal management system provided in the embodiment of the present application can deliver the cooling liquid or heating liquid output by the thermal management device to the inlet of the seat's temperature control pipeline to adjust the temperature of the seat by opening the first control valve to connect the first branch to the main liquid inlet pipe and closing the second control valve to disconnect the second branch from the main liquid outlet pipe. In addition, by opening the second control valve to connect the second branch to the main liquid outlet pipe and closing the first control valve to disconnect the first branch from the main liquid inlet pipe, the heating liquid or cooling liquid used by the power battery can be delivered to the inlet of the seat's temperature control pipeline to adjust the temperature of the seat. When the power battery is in a heating condition or a cooling condition, the seat can be actively heated or cooled according to user needs, thereby increasing the heating and cooling speed of the seat, that is, increasing the temperature adjustment efficiency, thereby improving the user experience, and without the need to connect to other heating sources and cooling sources, it also reduces energy consumption and usage costs.

[0012] In a possible implementation of the present application, the first branch is connected to the second branch through a third control valve.

[0013] In a possible implementation of the present application, a liquid return pipe is further included, one end of which is connected to the main liquid outlet pipe through a fourth control valve, and the other end of the liquid return pipe is connected to the outlet of the temperature control pipeline of the seat.

[0014] In a possible implementation of the present application, the third control valve and the fourth control valve are both three-way valves.

[0015] In a possible implementation of the present application, a connection point between the liquid return pipe and the main liquid outlet pipe is closer to the thermal management device than a connection point between the second branch and the main liquid outlet pipe.

[0016] In a possible implementation of the present application, the thermal management device is provided with a liquid inlet and a liquid outlet, the liquid outlet is connected to the inlet of the battery cooling circuit through a main liquid inlet pipe, and the liquid inlet is connected to the outlet of the battery cooling circuit through a main liquid outlet pipe.

[0017] In a possible implementation of the present application, the thermal management device includes a heat dissipation module and a heating module, the heat dissipation module is respectively connected to the main liquid inlet pipe and the main liquid outlet pipe, and the heating module is respectively connected to the main liquid inlet pipe and the main liquid outlet pipe.

[0018] In a possible implementation of the present application, the first control valve and the second control valve are both electrically controlled three-way valves.

[0019] In a possible implementation of the present application, a controller is further included. The controller is electrically connected to the first control valve and the second control valve, respectively, and is used to control the opening of the first control valve and the second control valve according to a set temperature.

[0020] In a second aspect, an embodiment of the present application provides an electric vehicle, comprising:

[0021] Seats, with temperature control lines inside;

[0022] Power battery, equipped with battery cooling pipeline;

[0023] In the above-mentioned seat thermal management system, the thermal management device is connected to the battery cooling pipeline through the main liquid inlet pipe and the main liquid outlet pipe to form a circulation loop, the first branch and the second branch are respectively connected to the inlet of the seat's temperature control pipeline, and the outlet of the seat's temperature control pipeline is connected to the main liquid outlet pipe.

[0024] An electric vehicle provided by an embodiment of the present application, since it includes the seat thermal management system provided by any one of the embodiments of the above-mentioned first aspect, has the same technical effect, that is, by opening the first control valve, the first branch is connected to the main liquid inlet pipe, and the second control valve is closed, the second branch is disconnected from the main liquid outlet pipe, the cooling liquid or heating liquid output by the thermal management device can be delivered to the inlet of the temperature control pipe of the seat to adjust the temperature of the seat. In addition, by opening the second control valve, the second branch is connected to the main liquid outlet pipe, and the first control valve is closed, the first branch is disconnected from the main liquid inlet pipe, the heating liquid or cooling liquid after the power battery is used can be delivered to the inlet of the temperature control pipe of the seat to adjust the temperature of the seat. When the power battery is in a heating condition or a cooling condition, the seat can be actively heated or cooled according to the needs of the user, so that the heating and cooling speed of the seat can be improved, that is, the temperature adjustment efficiency is improved, thereby improving the user experience, and there is no need to connect other heating sources and cooling sources, and energy consumption and use costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a seat thermal management system provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of a state of a seat thermal management system provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of another state of a seat thermal management system provided in an embodiment of the present application.

[0028] Reference numerals:

[0029] 1. Thermal management device; 2. Main liquid inlet pipe; 3. Main liquid outlet pipe; 4. First branch; 5. First control valve; 6. Second branch; 7. Second control valve; 8. Third control valve; 9. Liquid return pipe; 10. Fourth control valve; 11. Seat; 12. Power battery;

[0030] 101. heat dissipation module; 102. heating module. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0032] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0033] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0034] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0036] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0037] An embodiment of the present application provides an electric vehicle. It should be noted that the electric vehicle in the present application may refer to a large vehicle, a small vehicle, a special-purpose vehicle, etc. For example, according to the vehicle model, the electric vehicle in the present application may be a sedan model, an off-road model, a multi-purpose vehicle (MPV) model or other models.

[0038] For electric vehicles, seats 11 are generally provided inside. In order to improve the comfort of the seat 11, the seat 11 of the electric vehicle usually has multiple adjustment functions, such as angle adjustment of the seat 11 and temperature adjustment of the seat 11. In order to facilitate the adjustment of the temperature of the seat 11, a thermostatic pipeline is provided inside the seat 11. The temperature of the seat 11 is regulated by conveying cooling liquid or heating liquid to the thermostatic pipeline. The specific structure of the thermostatic pipeline can select any existing structure according to actual needs, and the embodiments of the present application do not impose too many restrictions on this.

[0039] In addition, the power source of the electric vehicle is generally a power battery 12. The power battery 12 can receive and store electrical energy. The power battery 12 is used to power the motor to drive the electric vehicle. In addition, the power battery 12 can also be used to power other electrical equipment of the electric vehicle, such as lights, central control screen, etc. The temperature of the power battery 12 needs to be maintained within a certain range to achieve efficient operation, but the power battery 12 will release a large amount of heat while releasing electrical energy. For this reason, the power battery 12 is provided with a battery cooling circuit to maintain its operating temperature. The temperature of the power battery 12 is regulated by conveying coolant or heating liquid to the battery cooling circuit. The battery cooling circuit can be selected to be set inside the power battery 12, or it can be selected to be set outside the power battery 12. The specific setting can be selected according to actual needs, and the embodiments of the present application do not impose too many restrictions on this.

[0040] It should be noted that the embodiment of the present application does not limit the type of the power battery 12 , and the power battery 12 can select any existing structure as needed, such as a lithium-ion battery, a lithium cobalt oxide battery, a lithium iron phosphate battery, etc.

[0041] In order to ensure that the power battery 12 can work normally and efficiently, and to facilitate the temperature control of the seat 11. Figure 1 The electric vehicle provided in the embodiment of the present application is also provided with a seat thermal management system. The thermal management device 1 of the seat thermal management system is connected to the battery cooling pipeline of the power battery 12 through the main liquid inlet pipe 2 and the main liquid outlet pipe 3 to form a circulation loop. In addition, the first branch 4 and the second branch 6 of the thermal management system are respectively connected to the inlet of the temperature control pipeline of the seat 11. The outlet of the temperature control pipeline of the seat 11 is connected to the main liquid outlet pipe 3.

[0042] The embodiment of the present application is connected to the main liquid inlet pipe 2 through the first branch 4, and the cooling liquid or heating liquid output by the thermal management device 1 can be delivered to the inlet of the temperature control pipe of the seat 11 to adjust the temperature of the seat 11. In addition, the main liquid outlet pipe 3 is connected through the second branch 6, and the heating liquid or cooling liquid after the power battery 12 is used can be delivered to the inlet of the temperature control pipe of the seat 11 to adjust the temperature of the seat 11. When the power battery 12 is in a heating condition or a cooling condition, the seat 11 can be actively heated or cooled according to the needs of the user, so that the heating and cooling speed of the seat 11 can be improved, that is, the temperature adjustment efficiency is improved, and then the user experience is improved, and there is no need to connect to other heating sources and cooling sources, and the energy consumption and use cost are also reduced.

[0043] In some embodiments of the present application, the seat thermal management system can also cool and heat other components of the electric vehicle, such as the trunk, armrest box, etc. It only needs to connect the corresponding components through pipes. The specific settings can be selected according to actual needs, and the embodiments of the present application do not impose too many restrictions on this.

[0044] On this basis, refer to Figure 1 , the embodiment of the present application also provides a seat thermal management system, which mainly includes: a thermal management device 1, a main liquid inlet pipe 2, a main liquid outlet pipe 3, a first branch 4 and a second branch 6. The thermal management device 1 is connected to the battery cooling pipeline through the main liquid inlet pipe 2 and the main liquid outlet pipe 3 respectively to form a circulation loop, which is suitable for heating or cooling the power battery 12. One end of the first branch 4 is connected to the main liquid inlet pipe 2 through the first control valve 5, and the other end is connected to the inlet of the temperature control pipeline of the seat 11. One end of the second branch 6 is connected to the main liquid outlet pipe 3 through the second control valve 7, and the other end is connected to the inlet of the temperature control pipeline of the seat 11. The outlet of the temperature control pipeline of the seat 11 is connected to the main liquid outlet pipe 3.

[0045] The seat thermal management system provided in the embodiment of the present application can deliver the cooling liquid or heating liquid output by the thermal management device 1 to the inlet of the temperature control pipeline of the seat 11 by opening the first control valve 5 so that the first branch 4 is connected to the main liquid inlet pipe 2, and at the same time close the second control valve 7 so that the second branch 6 is disconnected from the main liquid outlet pipe 3, so as to adjust the temperature of the seat 11. In addition, by opening the second control valve 7 so that the second branch 6 is connected to the main liquid outlet pipe 3, and at the same time close the first control valve 5 so that the first branch 4 is disconnected from the main liquid inlet pipe 2, the heating liquid or cooling liquid used by the power battery 12 can be delivered to the inlet of the temperature control pipeline of the seat 11 to adjust the temperature of the seat 11. When the power battery 12 is in the heating condition or the cooling condition, the seat 11 can be actively heated or cooled according to the needs of the user, so that the heating and cooling speed of the seat 11 can be improved, that is, the temperature adjustment efficiency is improved, thereby improving the user experience, and there is no need to connect other heating sources and cooling sources, and energy consumption and use costs are reduced.

[0046] Compared with the traditional method of heating the seat 11 with a resistance wire, the seat thermal management system provided in the embodiment of the present application can realize the active cooling function of the seat 11 and can realize the rapid cooling of the seat 11. In addition, the embodiment of the present application omits the resistance wire, thus avoiding the risk of fire caused by the resistance wire and being safer.

[0047] Specifically, the coolant output by the thermal management device 1 can be cooling water, and the heating liquid can be heating water. When the thermal management device 1 outputs cooling liquid to cool the power battery 12, the temperature of the cooling liquid flowing out from the outlet of the battery cooling pipeline of the power battery 12 is about 40°C to 45°C. Therefore, the cooling liquid after use of the power battery 12 can be used as the heating liquid for heating the seat 11. Similarly, when the thermal management device 1 outputs heating liquid to heat the power battery 12, the heating liquid after use of the power battery 12 can be used as the cooling liquid for cooling the seat 11.

[0048] On this basis, in some embodiments of the present application, refer to Figure 1 , the first branch 4 can also be connected to the second branch 6 through the third control valve 8. At this time, the first branch 4 only needs to be connected to the second branch 6 to be connected to the inlet of the temperature control pipeline of the seat 11 through the second branch 6, which can save the total length of the first branch 4 and reduce the use cost. In addition, the second branch 6 can also be disconnected through the third control valve 8 to prevent the cooling liquid or heating liquid after the power battery 12 is used from entering the temperature control pipeline of the seat 11 through the second branch 6, affecting the temperature control of the seat 11.

[0049] In some embodiments of the present application, the seat thermal management system further includes a liquid return pipe 9. One end of the liquid return pipe 9 is connected to the main liquid outlet pipe 3 through the fourth control valve 10, and the other end is connected to the outlet of the temperature control pipeline of the seat 11. A closed cycle can be formed, which is convenient for recycling coolant and heating liquid and is beneficial for saving energy. The outlet of the temperature control pipeline can be opened and closed by the fourth control valve 10, and the opening and closing of the temperature control pipeline of the seat 11 can be controlled in conjunction with the third control valve 8 or the second control valve 7. The structure is simple and easy to use.

[0050] It should be noted that in the embodiments of the present application, the specific forms of the third control valve 8 and the fourth control valve 10 are not limited. For example, in some embodiments of the present application, the third control valve 8 and the fourth control valve 10 are three-way valves, which are easy to install and have low cost. For the convenience of use and operation, the third control valve 8 and the fourth control valve 10 can maintain a full-pass state during the cooling and heating processes of the seat 11. The third control valve 8 is only used to connect the first branch 4 and the second branch 6, and the fourth control valve 10 is only used to connect the return pipe 9 and the main outlet pipe 3.

[0051] In some embodiments of the present application, the connection point between the return pipe 9 and the main liquid outlet pipe 3 is closer to the thermal management device 1 than the connection point between the second branch 6 and the main liquid outlet pipe 3. That is, the connection point between the return pipe 9 and the main liquid outlet pipe 3 is located downstream of the connection point between the second branch 6 and the main liquid outlet pipe 3. The cooling liquid or heating liquid flowing out of the return pipe 9 will be directly recycled into the thermal management device 1 to prevent it from re-entering the inlet of the temperature control pipeline from the main liquid outlet pipe 3, and the structure is stable.

[0052] It should be noted that in the embodiment of the present application, the specific form of the thermal management device 1 is not limited, as long as the thermal management device 1 can output cooling liquid or heating liquid to cool or heat the power battery 12.

[0053] In some embodiments of the present application, the thermal management device 1 is provided with a liquid inlet and a liquid outlet, the liquid outlet is connected to the inlet of the battery cooling circuit through the main liquid inlet pipe 2, and the liquid inlet is connected to the outlet of the battery cooling circuit through the main liquid outlet pipe 3. When cooling the power battery 12, the liquid outlet outputs cooling liquid. When heating the power battery 12, the liquid inlet outputs heating liquid. The liquid inlet is used to recover the cooling liquid or heating liquid of the power battery 12 after use.

[0054] Since the thermal management device 1 needs to output heating liquid or cooling liquid to heat or cool the power battery 12, the thermal management device 1 has a heating condition and a cooling condition. Figure 2 and Figure 3 The thermal management device 1 includes a heat dissipation module 101 and a heating module 102. The heat dissipation module 101 is respectively connected to the main liquid inlet pipe 2 and the main liquid outlet pipe 3, and the heating module 102 is respectively connected to the main liquid inlet pipe 2 and the main liquid outlet pipe 3. In the cooling state, the heat dissipation module 101 outputs the cooling liquid to cool the power battery 12. In the heating state, the heating module 102 outputs the heating liquid to heat the power battery 12. Both the heat dissipation module 101 and the heating module 102 can select any existing structure for easy use.

[0055] In addition, since the main function of the thermal management device 1 is to heat or cool the power battery 12, the main liquid inlet pipe 2 and the main liquid outlet pipe 3 need to be kept unobstructed. Therefore, the first control valve 5 only needs to control the connection and disconnection between the first branch 4 and the main liquid inlet pipe 2, and the second control valve 7 only needs to control the connection and disconnection between the second branch 6 and the main liquid outlet pipe 3.

[0056] In order to facilitate the control of the first control valve 5 and the second control valve 7. In some embodiments of the present application, the first control valve 5 can also be arranged on the first branch 4, and the first branch 4 is connected to the main liquid outlet pipe 3 through a three-way joint. Similarly, the second control valve 7 can also be arranged on the second branch 6, and the second branch 6 is connected to the main liquid outlet pipe 3 through a three-way joint.

[0057] In some embodiments of the present application, the first control valve 5 and the second control valve 7 are both electrically controlled three-way valves. The electrically controlled three-way valve is convenient for controlling the opening size and the open and closed state, and can achieve precise control of the flow and direction of the cooling liquid or the heating liquid.

[0058] Furthermore, in some embodiments of the present application, the seat thermal management system also includes a controller, which is electrically connected to the first control valve 5 and the second control valve 7, respectively, and is used to control the opening of the first control valve 5 and the second control valve 7 according to a set temperature.

[0059] Specifically, the controller can select any existing structure as needed, such as a central processing unit, a vehicle-mounted controller, etc. The controller controls the opening of the first control valve 5 and the second control valve 7 according to the set temperature, so as to control the heating or cooling temperature. For example, when the seat 11 is heated in the cooling condition, the controller increases the opening of the second control valve 7 to increase the heating temperature, and the controller decreases the opening of the second control valve 7 to decrease the heating temperature. The controller can also realize remote and precise control of the first control valve 5 and the second control valve 7, thereby improving the degree of automation.

[0060] The working process of the embodiment of the present application is as follows:

[0061] Cooling conditions:

[0062] The heat dissipation module 101 of the thermal management device 1 delivers coolant to the inlet of the battery cooling line of the power battery 12 through the main liquid inlet pipe 2 to cool the power battery 12. The used coolant of the power battery 12 is received through the main liquid outlet pipe 3. The used coolant of the power battery 12 is used as heating liquid for heating the seat 11.

[0063] If the seat 11 is heated in the cooling condition, the controller controls the first control valve 5 to close the connection between the first branch 4 and the main liquid inlet pipe 2. At the same time, the second control valve 7 is controlled to open the connection between the second branch 6 and the main liquid outlet pipe 3. The used coolant of the power battery 12 enters the inlet of the temperature control pipe of the seat 11 through the main liquid outlet pipe 3 and the second branch 6 to heat the seat 11. After that, it is recovered to the thermal management device 1 through the return pipe 9 and the main liquid outlet pipe 3.

[0064] If the seat 11 is cooled in the cooling condition, the controller controls the first control valve 5 to open the connection between the first branch 4 and the main liquid inlet pipe 2. At the same time, the second control valve 7 is controlled to close the connection between the second branch 6 and the main liquid outlet pipe 3. The coolant flowing out of the thermal management device 1 enters the inlet of the temperature control pipeline of the seat 11 through the main liquid inlet pipe 2 and the first branch 4 to cool the seat 11. The used coolant is then recovered to the thermal management device 1 through the return pipe 9 and the main liquid outlet pipe 3.

[0065] Heating conditions:

[0066] The heating module 102 of the thermal management device 1 delivers the heating liquid to the inlet of the battery cooling line of the power battery 12 through the main liquid inlet pipe 2 to heat the power battery 12. The heating liquid after use of the power battery 12 is received through the main liquid outlet pipe 3. The heating liquid after use of the power battery 12 is used as the cooling liquid for cooling the seat 11.

[0067] If the seat 11 is heated in the heating condition, the controller controls the first control valve 5 to open the connection between the first branch 4 and the main liquid inlet pipe 2. At the same time, the second control valve 7 closes the connection between the second branch 6 and the main liquid outlet pipe 3. The heating liquid flowing out of the thermal management device 1 enters the inlet of the temperature control pipeline of the seat 11 through the main liquid inlet pipe 2 and the first branch 4 to cool the seat 11. The used heating liquid is then recovered to the thermal management device 1 through the return pipe 9 and the main liquid outlet pipe 3.

[0068] To cool down the seat 11 in the heating condition, the controller controls the first control valve 5 to close the connection between the first branch 4 and the main liquid inlet pipe 2. At the same time, the second control valve 7 is controlled to open the connection between the second branch 6 and the main liquid outlet pipe 3. The heating liquid after use by the power battery 12 enters the inlet of the temperature control pipe of the seat 11 through the main liquid outlet pipe 3 and the second branch 6 to cool down the seat 11. Afterwards, it is recovered to the thermal management device 1 through the return pipe 9 and the main liquid outlet pipe 3.

[0069] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A seat thermal management system, characterized in that: include: A thermal management device (1) is connected to a battery cooling pipeline through a main liquid inlet pipe (2) and a main liquid outlet pipe (3) to form a circulation loop, and is suitable for heating or cooling a power battery (12); A first branch (4), one end of which is connected to the main liquid inlet pipe (2) through a first control valve (5), and the other end of which is connected to the inlet of the temperature control pipeline of the seat (11); A second branch (6), one end of which is in communication with the main liquid outlet pipe (3) via a second control valve (7), and the other end of which is in communication with the inlet of the temperature control pipeline of the seat (11); The outlet of the temperature regulating pipeline of the seat (11) is connected to the main liquid outlet pipe (3).

2. The seat thermal management system according to claim 1, characterized in that: The first branch (4) is connected to the second branch (6) via a third control valve (8).

3. The seat thermal management system according to claim 2, characterized in that: It also includes a liquid return pipe (9), one end of which is connected to the main liquid outlet pipe (3) through a fourth control valve (10), and the other end of which is connected to the outlet of the temperature control pipeline of the seat (11).

4. The seat thermal management system according to claim 3, characterized in that: The third control valve (8) and the fourth control valve (10) are both three-way valves.

5. The seat thermal management system according to claim 3, characterized in that: The connection point between the liquid return pipe (9) and the main liquid outlet pipe (3) is closer to the thermal management device (1) than the connection point between the second branch (6) and the main liquid outlet pipe (3).

6. The seat thermal management system according to any one of claims 1 to 4, characterized in that: The thermal management device (1) is provided with a liquid inlet and a liquid outlet, the liquid outlet being connected to the inlet of the battery cooling pipeline via the main liquid inlet pipe (2), and the liquid inlet being connected to the outlet of the battery cooling pipeline via the main liquid outlet pipe (3).

7. The seat thermal management system according to any one of claims 1 to 4, characterized in that: The thermal management device (1) comprises a heat dissipation module (101) and a heating module (102); the heat dissipation module (101) is respectively connected to the main liquid inlet pipe (2) and the main liquid outlet pipe (3); and the heating module (102) is respectively connected to the main liquid inlet pipe (2) and the main liquid outlet pipe (3).

8. The seat thermal management system according to any one of claims 1 to 4, characterized in that: The first control valve (5) and the second control valve (7) are both electrically controlled three-way valves.

9. The seat thermal management system according to claim 8, characterized in that: The invention also comprises a controller, which is electrically connected to the first control valve (5) and the second control valve (7) respectively, and is used to control the opening of the first control valve (5) and the second control valve (7) according to a set temperature.

10. An electric vehicle, characterized in that: include: A seat (11) having a temperature regulating pipeline therein; A power battery (12) is provided with a battery cooling pipeline; The seat thermal management system according to any one of claims 1 to 9, wherein the thermal management device (1) is connected to the battery cooling pipeline through the main liquid inlet pipe (2) and the main liquid outlet pipe (3) to form a circulation loop, the first branch (4) and the second branch (6) are respectively connected to the inlet of the temperature control pipeline of the seat (11), and the outlet of the temperature control pipeline of the seat (11) is connected to the main liquid outlet pipe (3).

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