CN219172225U - Thermal management system and vehicle - Google Patents

Abstract

The utility model provides a thermal management system and a vehicle, and belongs to the technical field of vehicles, wherein the thermal management system comprises a waste heat recovery pipeline, a first heat exchange pipeline, a second heat exchange pipeline and a reversing valve, and a high-pressure part heat exchanger is arranged on the waste heat recovery pipeline; a battery cooler and a heat pump air conditioner are arranged on the first heat exchange pipeline in series; the second heat exchange pipeline is provided with a first liquid pump and a battery pack in series; the reversing valve is used for communicating at least two of the first heat exchange pipeline, the second heat exchange pipeline and the waste heat recovery pipeline for heat exchange. The heat management system provided by the utility model can meet the heating or cooling requirement of the battery pack while the heat pump air conditioner absorbs the residual heat of the high-voltage parts, and the heat management system and the battery pack are not interfered and conflict with each other, so that the residual heat utilization rate of the high-voltage parts is effectively improved.

Description

Thermal management system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a thermal management system and a vehicle.

Background

With the continuous improvement of the requirements of the electric automobile on the endurance mileage under the low-temperature environment and the continuous development of the heat pump system technology, the thermal management system of the pure electric automobile is more intelligent, and the energy control is more refined.

At present, pure electric vehicles generally adopt the mode of heat pump air conditioner to heat or cool off car cabin and battery, adopt this mode can effectively promote the energy efficiency ratio, compare and adopt PTC (Positive Temperature Coeficient, thermistor) heating mode, can reduce the electric quantity consumption of battery package to be favorable to promoting the continuation of journey mileage.

However, some problems still exist in the current heat pump air conditioning system of an automobile when working, for example, when the battery and the passenger cabin have a heating request at the same time in a low-temperature environment in winter, because the battery is directly connected with the high-voltage components, when the battery pack is heated, a heat exchange medium passes through a charger (battery cooler), and the process directly causes the battery pack heating function and the battery pack heating function by utilizing the residual heat of the high-voltage components to conflict, so that the normal heat pump air conditioning work is affected.

Disclosure of Invention

Accordingly, the present utility model is directed to a thermal management system and a vehicle, which solve the problem that the battery pack heating function and the battery pack are easy to collide when heated by waste heat in the prior art.

Based on the above object, the present utility model provides a thermal management system comprising:

the waste heat recovery pipeline is provided with a high-pressure part heat exchanger;

the first heat exchange pipeline is provided with a battery cooler and a heat pump air conditioner in series;

the second heat exchange pipeline is provided with a first liquid pump and a battery pack in series;

and the reversing valve is used for communicating at least two of the first heat exchange pipeline, the second heat exchange pipeline and the waste heat recovery pipeline for heat exchange.

Further, a parallel pipeline is arranged on the second heat exchange pipeline, the parallel pipeline is connected with the first liquid pump in parallel and is connected with the battery pack in series, and the waste heat recovery pipeline can be connected with the battery pack through the parallel pipeline.

Further, a first stop valve is arranged on the parallel pipeline, and the parallel pipeline is switched to be in an on-off state through the first stop valve.

Further, the device also comprises a heating pipeline, wherein a heating element is arranged on the heating pipeline, and the heating pipeline can be communicated with the second heat exchange pipeline through the reversing valve.

Further, the system also comprises a passenger cabin pipeline, wherein the passenger cabin pipeline is provided with the heating element, the passenger cabin heat exchanger and the heat pump air conditioner which are arranged in series, and the heating pipeline is respectively connected with the second heat exchange pipeline and the passenger cabin pipeline in parallel.

Further, a first temperature sensor is arranged on one side of a liquid outlet of the waste heat recovery pipeline, and a second temperature sensor is arranged on one side of a liquid outlet of the first heat exchange pipeline.

Further, the heat-dissipating device further comprises a heat-dissipating pipeline, a heat-dissipating piece is arranged on the heat-dissipating pipeline, and the waste heat recovery pipeline is communicated with the heat-dissipating pipeline through the reversing valve.

Further, a second liquid pump is arranged on the waste heat recovery pipeline, and one side of a liquid inlet of the waste heat recovery pipeline is connected with the first heat exchange pipeline, the second heat exchange pipeline and the heat dissipation pipeline respectively through connecting pieces.

Further, a second stop valve is arranged between the waste heat recovery pipeline and the second heat exchange pipeline.

Based on the same inventive concept, the present application also provides a vehicle comprising a thermal management system as described in any one of the above.

As can be seen from the above, in the thermal management system provided by the utility model, the reversing valve is arranged among the waste heat recovery pipeline, the first heat exchange pipeline and the second heat exchange pipeline, the first heat exchange pipeline is connected in series with the battery cooler and the heat pump air conditioner, the second heat exchange pipeline is connected in series with the first liquid pump and the battery pack, and the reversing valve is used for communicating at least two of the first heat exchange pipeline, the second heat exchange pipeline and the waste heat recovery pipeline for heat exchange, so that every two pipelines can be connected in series respectively, the formation of mutual conflict interference is avoided, and the energy loss caused during the diversion can be avoided;

in addition, because the liquid inlet temperature of the battery pack has a certain limit, the liquid in the waste heat recovery pipeline exceeding the liquid inlet temperature limit can form heat exchange with the heat pump air conditioner through the first heat exchange pipeline, so that the heat waste heat utilization rate in the waste heat recovery pipeline is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Description of the drawings:

FIG. 1 is a schematic diagram of a thermal management system in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic diagram illustrating a thermal management system in an application scenario according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram illustrating a thermal management system in an application scenario according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram illustrating the operation of a thermal management system in a certain application scenario according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram illustrating the operation of a thermal management system in a certain application scenario according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating the operation of a thermal management system in a certain application scenario according to an embodiment of the present utility model;

fig. 7 is a schematic diagram illustrating a thermal management system according to an embodiment of the present utility model in a certain application scenario.

Reference numerals illustrate:

1. a waste heat recovery pipeline; 2. a first heat exchange line; 3. a second heat exchange line; 4. parallel pipelines; 5. a heating pipeline; 6. a passenger compartment pipeline; 7. a high pressure component heat exchanger; 8. a first temperature sensor; 9. a reversing valve; 10. a battery cooler;

11. a second temperature sensor; 12. a connecting piece; 13. a first liquid pump; 14. a second liquid pump; 15. a battery pack; 16. a first stop valve; 17. a second shut-off valve; 18. a heating element; 19. a passenger compartment heat exchanger; 20. a heat pump air conditioner; 21. a heat dissipation pipeline; 22. and a heat sink.

Detailed Description

The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present disclosure pertains. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In one or more embodiments of the present application, as shown in fig. 1, a thermal management system is provided, where the system includes a waste heat recovery pipeline 1, a first heat exchange pipeline 2, a second heat exchange pipeline 3, and a reversing valve 9, where the waste heat recovery pipeline 1 is provided with a high-pressure part heat exchanger 7; the first heat exchange pipeline 2 is provided with a battery cooler 10 and a heat pump air conditioner 20 in series; the second heat exchange pipeline 3 is provided with a first liquid pump 13 and a battery pack 15 in series; the reversing valve 9 is used for communicating at least two of the first heat exchange pipeline 2, the second heat exchange pipeline 3 and the waste heat recovery pipeline 1 for heat exchange.

As can be seen from the above, in the thermal management system provided by the present application, by arranging the reversing valve 9 between the waste heat recovery pipeline 1, the first heat exchange pipeline 2 and the second heat exchange pipeline 3, the reversing valve 9 is used for communicating at least two of the first heat exchange pipeline 2, the second heat exchange pipeline 3 and the waste heat recovery pipeline 1, so that interference conflict can not occur between the waste heat recovery pipeline 1 and the first heat exchange pipeline 2 and between the waste heat recovery pipeline 1 and the second heat exchange pipeline 3 and between the waste heat recovery pipeline 1 and the second heat exchange pipeline 1 and between the waste heat recovery pipeline 2 and the first heat exchange pipeline 1;

in addition, since the liquid inlet temperature of the battery pack 15 is limited, the liquid in the waste heat recovery pipeline 1 exceeding the liquid inlet temperature limit can form heat exchange with the heat pump air conditioner 20 through the first heat exchange pipeline 2, so that the liquid outlet temperature of the waste heat recovery pipeline 1 is not limited, and the heat waste heat utilization rate in the waste heat recovery pipeline 1 can be improved more effectively.

The high-voltage component heat exchanger 7 is a heat exchanger connected to a high-voltage component, and herein, the high-voltage component is a vehicle body-related component such as a motor and an electric control device, and the components continuously generate heat in an operating state, and the generated heat is transferred to the waste heat recovery line 1 via the high-voltage component heat exchanger 7, and the heat is subsequently utilized by the heat pump air conditioner 20 or the battery pack 15, thereby improving the waste heat recovery effect of the vehicle.

In addition, the heat pump air conditioner 20 and the battery cooler 10 (refrigerating machine) mentioned in the present embodiment may each employ a well-known vehicle heat exchange device.

In some embodiments, as shown in fig. 1, the thermal management system further includes a heating pipe 5, where a heating element 18 is disposed on the heating pipe 5, and the heating pipe 5 can be in communication with the second heat exchange pipe 3 through a reversing valve 9. Here, the heating element 18 may employ a water heating PTC (Positive Temperature Coeficient, thermistor) device, and the heating element 18 is capable of converting electric energy into thermal energy, thereby inputting high-power heat to the battery pack 15.

As can be seen from fig. 1, the liquid outlet end of the heating pipeline 5, the waste heat recovery pipeline 1 and the second heat exchange pipeline 3 are connected through a tee joint, the liquid inlet end of the heating pipeline 5 is connected with the reversing valve 9, and the circulation loop of the heating pipeline 5 and the second heat exchange pipeline 3 is realized by switching the valve port of the reversing valve 9.

Further, the thermal management system further comprises a passenger cabin pipeline 6, and the passenger cabin pipeline 6 is provided with the heating element 18, the passenger cabin heat exchanger 19 and the heat pump air conditioner 20 in series, so that when the temperature of the passenger cabin of the vehicle is low, the heating element 18 inputs high-power heat to the passenger cabin heat exchanger 19, and the temperature of the passenger cabin of the vehicle is ensured. Here, the passenger compartment heat exchanger 19 is used to communicate with the tuyere of the passenger compartment to input cool air or warm air to the passenger compartment. Because the heating element 18, the passenger cabin heat exchanger 19 and the heat pump air conditioner 20 are arranged in series, the heat pump air conditioner 20 and the heating element 18 can do work on the passenger cabin heat exchanger 19 at the same time, so that different scenes in which only the heat pump air conditioner 20 is started in a low-temperature environment or in which the heat pump air conditioner 20 and the heating element 18 are started in a lower-temperature environment can be flexibly selected, and the maximization of the heat utilization of the vehicle is ensured.

In the above embodiment, since the heat pump air conditioner 20 has a low temperature requirement on the liquid outlet side of the waste heat recovery pipeline 1, the upper temperature limit on the liquid outlet side of the high-pressure component may not be set, so that the waste heat of the waste heat recovery pipeline 1 is utilized more fully, and the heat storage process of the driving system may be omitted.

Further, as shown in fig. 1, the heating pipeline 5 is connected in parallel with the second heat exchange pipeline 3 and the passenger cabin pipeline 6 respectively, so that the heating element 18 can input heat to the battery pack 15 on one hand, and can also input heat through the passenger cabin heat exchanger 19 on the other hand, the two can not interfere with each other, and the heating element can be independently implemented or can be simultaneously heated, so that the use scene of the heating element 18 can be expanded.

In some embodiments, a parallel pipeline 4 is further disposed on the second heat exchange pipeline 3, the parallel pipeline 4 is connected in parallel with the first liquid pump 13 and connected in series with the battery pack 15, and the waste heat recovery pipeline 1 can be connected with the battery pack 15 through the parallel pipeline 4. Therefore, when the heat of the waste heat recovery pipeline 1 is enough to meet the heating requirement of the battery pack, the parallel pipeline 4 can be adopted to avoid the first liquid pump 13, so that the use frequency of the first liquid pump 13 is reduced, and the energy utilization rate is further improved.

In the above embodiment, the parallel pipeline 4 may be provided with the first stop valve 16 to control the on-off state thereof, when the first stop valve 16 is opened, since the parallel pipeline 4 is arranged in parallel with the first liquid pump 13, in a state where the first liquid pump 13 does not work, the liquid carrying the residual heat of the high-pressure parts flows from the parallel pipeline 4 with smaller resistance to the battery pack; when the first shut-off valve 16 is closed, the parallel line 4 is in an open state and liquid can only flow through the battery pack by means of the first liquid pump 13.

As shown in fig. 1, in some embodiments, the thermal management system further includes a heat dissipation pipe 21, a heat dissipation member 22 is disposed on the heat dissipation pipe 21, and the heat recovery pipe 1 is communicated with the heat dissipation pipe 21 through the reversing valve 9, so that when the heat generated by the high-voltage component is too high, the heat can be dissipated to the outside of the vehicle body through the heat dissipation member 22, so that the influence on the service life caused by the fact that the high-voltage component is continuously at high temperature is avoided.

In some embodiments, the liquid outlet side of the waste heat recovery pipeline 1 is provided with a first temperature sensor 8, and the liquid outlet side of the first heat exchange pipeline 2 is provided with a second temperature sensor 11. The liquid outlet temperature of the waste heat recovery pipeline 1 can be monitored through the first temperature sensor 8, the liquid outlet temperature of the second heat exchange pipeline 3 can be monitored through the second temperature sensor 11, and the heat control temperature can be conveniently controlled through the arrangement, so that the reasonable logic command setting is facilitated, and the heat recycling is realized. Here, the battery pack should be further provided with a temperature sensor for detecting the battery cell, and the temperature sensor may be implemented by using an existing mature technology, which is not described in detail in this embodiment.

In the above embodiment, the second liquid pump 14 is disposed on the waste heat recovery pipeline 1, and the liquid inlet side of the waste heat recovery pipeline 1 is connected to the first heat exchange pipeline 2, the second heat exchange pipeline 3 and the heat dissipation pipeline 21 via the connecting piece 12, respectively. Illustratively, the connector 12 may be implemented as a conventional four-way valve, or other valve capable of multiple-port connection. Here, the second liquid pump 14 is arranged, so that the waste heat of the high-pressure parts can be conveyed to the heat pump air conditioner 20 and the passenger cabin heat exchanger 19, and the waste heat of the high-pressure parts can be conveyed to the battery pack through the parallel pipeline 4 on the premise of avoiding the first liquid pump 13, so that the use effect of the second liquid pump 14 is effectively improved; the connecting piece 12 is arranged, so that the structural connection difficulty can be reduced to a greater extent, and the connecting framework is ensured to be simple and reliable.

As shown in fig. 1, in some embodiments, a second stop valve 17 is further disposed between the waste heat recovery pipeline 1 and the second heat exchange pipeline 3, where the second stop valve 17 can control the on-off state of the second heat exchange pipeline 3, so as to avoid that the liquid in the second heat exchange pipeline 3 flows back to affect the normal heat exchange.

It should be noted that, when the five-way valve is adopted, the reversing valve 9 has one input port and four output ports, and the waste heat recovery pipeline 1 is used as an input port and is respectively connected with the heat dissipation pipeline 21, the heating pipeline 5, the first heat exchange pipeline 2 and the second heat exchange pipeline 3, and the connection or disconnection state of the waste heat recovery pipeline 1 and different pipelines is realized by switching the valve port positions of the five-way valve.

The thermal management system of the present application is described below in several exemplary application scenarios, where the arrow direction refers to the flow direction of the liquid, the dark line represents the relevant pipeline that is working at this time, the light line represents the relevant pipeline that does not form a passage at this time, the ports of the reversing valve 9 are respectively labeled a, b, c, d, e, the port a is correspondingly connected to the waste heat recovery pipeline 1, the port b is correspondingly connected to the heat dissipation pipeline 21, the port c is correspondingly connected to the heating pipeline 5, the port d is correspondingly connected to the first heat exchange pipeline 2, and the port e is correspondingly connected to the second heat exchange pipeline 3.

As shown in fig. 2, in some embodiments, when the vehicle body senses that the ambient temperature is low, the passenger cabin has a heating requirement, but when the battery core temperature of the battery pack is still in an acceptable range, only the ad port in fig. 2 can be communicated, at this time, the heat generated by the high-voltage component is conveyed to the battery cooler 10 through the d port by the waste heat recovery pipeline 1, and the heat pump air conditioner 20 receives the heat through the battery cooler 10 and conveys the heat to the passenger cabin heat exchanger 19, and conveys the heat to the passenger cabin by the passenger cabin heat exchanger 19 to realize the heating in the passenger cabin.

As shown in fig. 3, in some embodiments, when the vehicle body senses that the ambient temperature is low, the battery core of the battery pack is low in temperature and needs to be heated, the temperature value of the waste heat recovery pipeline 1 is detected by the first temperature sensor 8, when the temperature value is higher than the lowest temperature value 4-6 ℃ allowed by the battery core of the battery pack, it is proved that the battery core of the battery pack can be heated by the liquid of the waste heat recovery pipeline 1 alone, at the moment, the second liquid pump 14 is opened, the ae port of the reversing valve 9 is controlled to be communicated, the second stop valve 17 is controlled to be opened to form a passage, the first stop valve 16 is opened to form a passage, and the waste heat recovery pipeline 1 and the second heat exchange pipeline 3 form a passage, so that the liquid is directly conveyed to the battery pack 15 through the parallel pipeline 4 to supply heat to the battery core of the battery pack.

As shown in fig. 4, in some embodiments, for example, the long-distance running causes more heat generated by the high-voltage components of the vehicle body, the heat pump air conditioner 20 can absorb the residual heat of the high-voltage components, can support the passenger cabin for heating, and the residual heat of the high-voltage components is remained, so that the battery pack can be heated at the same time. If the temperature value of the liquid passing through the heat pump air conditioner 20 is monitored by the second temperature sensor 11, when the temperature value is higher than the minimum temperature value of 4-6 ℃ allowed by the battery cell of the battery pack, it is proved that the residual heat of the liquid temperature passing through the heat pump air conditioner 20 can heat the battery cell of the battery pack, at the moment, the aed port of the reversing valve 9 is communicated, the first liquid pump 13 and the second liquid pump 14 are both opened, the first stop valve 16 is closed to form an open circuit, the second stop valve 17 is opened to form a passage, the liquid in the waste heat recovery pipeline 1 is firstly conveyed to the first heat exchange pipeline 2 to exchange heat with the heat pump air conditioner 20 through the ad port, and the liquid passing through the battery cooler 10 is communicated with the second heat exchange pipeline 3 through the four-way to be conveyed to the battery pack 15, so as to supply heat to the battery cell of the battery pack.

In the above embodiments, the difference between the temperature value of the waste heat recovery pipe 1 monitored by the first temperature sensor 8 and the lowest temperature value allowed by the telecommunications may be set in combination with various reference factors, and the difference between the temperature value of the waste heat recovery pipe 1 monitored by the second temperature sensor 11 and the lowest temperature value allowed by the telecommunications may be set in combination with various reference factors, for example, according to the usage scenario of the battery pack, the thermal insulation performance of the battery pack itself, and the like.

As shown in fig. 5, in some embodiments, when the vehicle body senses that the ambient temperature is very low, the heat of the waste heat recovery pipeline 1 is insufficient to supply heat to the battery pack, at this time, the ad port of the reversing valve 9 is communicated, the ec port is communicated, the first liquid pump 13 and the second liquid pump 14 are opened, the first stop valve 16 is opened to form a passage, the second stop valve 17 is closed to form an open circuit, in this state, on one hand, the liquid of the waste heat recovery pipeline 1 is conveyed to the first heat exchange pipeline 2 through the communicated ad port, so that the heat pump air conditioner 20 absorbs heat and conveys the liquid to the passenger cabin heat exchanger 19 to heat the passenger cabin, on the other hand, the heating pipeline 5 is communicated with the second heat exchange pipeline 3 due to the fact that the second stop valve 17 is closed, the heating element 18 can heat the liquid in the second heat exchange pipeline 3, so that the circulation passage of the liquid in the battery pack 15, the reversing valve 9 and the heating pipeline 5 is realized under the pumping of the first liquid pump 13, and the battery pack in this state can be warmed up more quickly due to the higher heating power of the heating element 18, so that the normal running effect can be ensured.

As shown in fig. 6, in some embodiments, when the vehicle body senses that the ambient temperature is high, the heat of the waste heat recovery pipeline 1 can be directly used for supplying heat to the battery pack 15, and the heat pump air conditioner 20 is directly subjected to heat exchange with the ambient environment, so as to realize passenger cabin heat supply, where the ae port of the reversing valve 9 is communicated, that is, only the waste heat recovery pipeline 1 is communicated with the second heat exchange pipeline 3, the first stop valve 16 is opened to form a passage, the second stop valve 17 is opened to form a passage, and the liquid of the waste heat recovery pipeline 1 is conveyed to the battery pack 15 through the reversing valve 9 and flows back to the waste heat recovery pipeline 1 through the four-way.

Alternatively, as shown in fig. 7, in some embodiments, when the vehicle body senses that the ambient temperature is high, the heat pump air conditioner 20 may directly exchange heat with the ambient environment to realize heat supply of the passenger cabin, and in order to quickly raise the temperature of the battery pack, the ec port may be communicated, at this time, the heating pipeline 5 is communicated with the second heat exchange pipeline 3, and the heating element 18 of the heating pipeline 5 is utilized to convey heat to the battery pack 15.

In the above embodiment, the operation of heating the battery pack may also be applied to the case where the temperatures of the different cells of the battery pack are different, that is, in order to maintain the battery pack cells at the same temperature, the operation of heating the battery pack is adopted.

It should be noted that parameters such as size, structure, model, power of all parts in the application do not make specific requirements, and the pipe diameter, model and material of the whole vehicle connecting pipeline do not make specific requirements, and the three-in-one charging and driving bridge are connected in series or in parallel, so long as the application can be satisfied.

It should be noted that, in the present application, in the thermal management system shown in fig. 1 to 7, the identified relevant components are some key components in the thermal management system, and fig. 1 to 7 are schematic topology diagrams of the thermal management system, and in a practical application scenario, other relevant components for completing the thermal management system should also be provided, which is not illustrated in this application.

Based on the same inventive concept, the present application also provides a vehicle comprising a thermal management system as described in any of the embodiments above, which also has all the advantages of the thermal management system due to the inclusion of the thermal management system as described in any of the embodiments above.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.

The embodiments of the utility model are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A thermal management system, comprising:

the waste heat recovery pipeline is provided with a high-pressure part heat exchanger;

the first heat exchange pipeline is provided with a battery cooler and a heat pump air conditioner in series;

the second heat exchange pipeline is provided with a first liquid pump and a battery pack in series;

and the reversing valve is used for communicating at least two of the first heat exchange pipeline, the second heat exchange pipeline and the waste heat recovery pipeline for heat exchange.

2. The thermal management system of claim 1, wherein a parallel line is provided on the second heat exchange line, the parallel line being connected in parallel with the first liquid pump and in series with the battery pack, the waste heat recovery line being connectable to the battery pack through the parallel line.

3. The thermal management system of claim 2, wherein a first shut-off valve is provided on the parallel line, the parallel line being switched on and off by the first shut-off valve.

4. The thermal management system of claim 1, further comprising a heating conduit having a heating element disposed thereon, the heating conduit being communicable with a second heat exchange conduit through the reversing valve.

5. The thermal management system of claim 4, further comprising a passenger compartment conduit having the heating element, passenger compartment heat exchanger and the heat pump air conditioner disposed in series thereon, the heating conduit being connected in parallel with the second heat exchange conduit and the passenger compartment conduit, respectively.

6. The thermal management system of claim 1, wherein a first temperature sensor is disposed on a side of the waste heat recovery conduit at the outlet, and a second temperature sensor is disposed on a side of the first heat exchange conduit at the outlet.

7. The thermal management system of claim 1, further comprising a heat dissipation conduit having a heat sink disposed thereon, the waste heat recovery conduit being in communication with the heat dissipation conduit via the reversing valve.

8. The thermal management system of claim 7, wherein the waste heat recovery pipeline is provided with a second liquid pump, and a liquid inlet side of the waste heat recovery pipeline is respectively connected with the first heat exchange pipeline, the second heat exchange pipeline and the heat dissipation pipeline through connecting pieces.

9. The thermal management system of claim 8, wherein a second shut-off valve is disposed between the waste heat recovery conduit and the second heat exchange conduit.

10. A vehicle comprising a thermal management system according to any one of claims 1 to 9.

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