Thermal management system and new energy automobile

Abstract

The utility model relates to the technical field of new energy, and discloses a heat management system and a new energy automobile, the heat management system comprises a cooling liquid loop, a refrigerant loop, a fixing plate, a heat exchanger, a runner plate and a pump body, the fixing plate comprises a first surface and a second surface which are oppositely arranged, the heat exchanger is arranged on the first surface, and the runner plate is arranged on the second surface; the pump body is arranged on the face, away from the fixing plate, of the runner plate, a water pipe of the cooling liquid loop is integrated in the runner plate, and a refrigerant pipe of the refrigerant loop is arranged between the fixing plate and the runner plate. In this way, the heat exchanger and the pump body are arranged on the first surface and the second surface of the fixing plate respectively, so that the distance between the heat exchanger and the pump body is reduced, and the space utilization rate of the heat management system is increased; besides, the water pipe of the cooling liquid loop is integrated in the runner plate, and the refrigerant pipe of the refrigerant loop is arranged between the fixed plate and the runner plate, so that the water pipe and the refrigerant pipe are prevented from being excessively dispersed, the length of the refrigerant pipe and the water pipe is shortened, and the manufacturing cost of the heat management system is reduced.

Description

Technical Field

[0001] This application relates to the field of new energy technologies, and particularly to a thermal management system and a new energy vehicle. Background Art

[0002] With the continuous development of the economy and technology, in order to reduce the environmental pressure caused by energy consumption, new energy vehicles have gradually grown and developed.

[0003] Most current new energy vehicles use an electric system as the power source. However, for an electric system, it generally requires a stable and appropriate operating temperature to exhibit good performance. Therefore, a thermal management system needs to be set up to heat or cool the electric system, so as to ensure that the operating temperature of the electric system is within a better range.

[0004] Currently, new energy electric vehicles generally use a PTC heater for direct heating, which consumes too much energy and significantly reduces the actual driving range in winter. Moreover, the existing thermal management system mainly consists of components such as a compressor, an outdoor condenser, a heat exchanger, a PTC heater, a pump body, a water valve device, refrigerant pipes, and water pipes. The installation of each component on the vehicle is generally scattered, and the vehicle space cannot be fully utilized. In addition, the distances between key components are relatively scattered, resulting in relatively long connecting refrigerant pipes and water pipes. Since refrigerant pipes and water pipes are expensive, the overall price of the system is relatively high. Summary of the Utility Model

[0005] The embodiments of this application aim to provide a thermal management system and a new energy vehicle with a compact structure to shorten the lengths of refrigerant pipes and water pipes.

[0006] To solve the above technical problems, a technical solution adopted in this application is: to provide a thermal management system, including a coolant circuit and a refrigerant circuit. The thermal management system includes a fixing plate, a heat exchanger, a flow channel plate, and a pump body. The fixing plate includes a first surface and a second surface arranged opposite to each other. The heat exchanger is arranged on the first surface, the flow channel plate is arranged on the second surface, and the pump body is arranged on a side of the flow channel plate away from the fixing plate. Among them, the water pipes of the coolant circuit are integrated in the flow channel plate, and the refrigerant pipes of the refrigerant circuit are arranged between the fixing plate and the flow channel plate.

[0007] In one or more / any of the above optional embodiments, the coolant circuit includes a motor, a six-way water valve, and a three-way water valve; the heat exchanger includes a first heat exchanger, and the pump body includes a first water pump; the motor, the first and second interface passages of the six-way water valve, the first channel of the first heat exchanger, the first and third interface passages of the three-way water valve, the first water pump, and the motor are connected in series in sequence to form a first coolant circuit.

[0008] In one or more / any of the above optional embodiments, the coolant circuit includes a radiator, which is arranged between the first heat exchanger and the first water pump; the motor, the first and second interface passage of the six-way valve, the first channel of the first heat exchanger, the first and second interface passage of the three-way valve, the radiator, the first water pump, and the motor are sequentially connected in series to form a second coolant circuit.

[0009] In one or more / any of the above optional embodiments, the coolant circuit includes a battery; the pump body includes a second water pump; the heat exchanger includes a second heat exchanger; the battery, the fifth and sixth interface passage of the six-way valve, the second water pump, the first channel of the second heat exchanger, and the battery are sequentially connected in series to form a third coolant circuit.

[0010] In one or more / any of the above optional embodiments, the coolant circuit includes a PTC heater and a heater core; the heat exchanger includes a third heat exchanger; the pump body includes a third water pump; the PTC heater, the heater core, the third and fourth interface passage of the six-way valve, the third water pump, the first channel of the third heat exchanger, and the PTC heater are sequentially connected in series to form a fourth coolant circuit.

[0011] In one or more / any of the above optional embodiments, the refrigerant circuit includes a compressor, a first throttling element, and a gas-liquid separator; the compressor, the second channel of the third heat exchanger, the first throttling element, the second channel of the first heat exchanger, the gas-liquid separator, and the compressor are sequentially connected in series to form a first refrigerant circuit.

[0012] In one or more / any of the above optional embodiments, the refrigerant circuit includes a solenoid valve, an outdoor condenser, and a second throttling element; the compressor, the second channel of the third heat exchanger, the solenoid valve, the outdoor condenser, the second throttling element, the second channel of the second heat exchanger, the gas-liquid separator, and the compressor are sequentially connected in series to form a second refrigerant circuit.

[0013] In one or more / any of the above optional embodiments, the refrigerant circuit includes a third throttling element and an evaporator; the compressor, the second channel of the third heat exchanger, the solenoid valve, the outdoor condenser, the third throttling element, the evaporator, the gas-liquid separator, and the compressor are sequentially connected in series to form a third refrigerant circuit.

[0014] In one or more / any of the above optional embodiments, the first heat exchanger, the second heat exchanger, and the third heat exchanger are plate heat exchangers; and / or the first heat exchanger, the second heat exchanger, and the third heat exchanger are arranged in an equilateral triangle; and / or the first water pump, the second water pump, and the third water pump are arranged in an equilateral triangle.

[0015] An embodiment of the present application further provides a new energy vehicle, including the above-mentioned thermal management system.

[0016] In the thermal management system and the new energy vehicle of the embodiments of the present application, by arranging the heat exchanger and the pump body on the first surface and the second surface of the fixing plate respectively, the distance between the two is reduced, and the space utilization rate of the thermal management system is improved; in addition, by integrating the water pipes of the coolant circuit into the flow channel plate and arranging the refrigerant pipes of the refrigerant circuit between the fixing plate and the flow channel plate, the water pipes and refrigerant pipes are prevented from being too scattered, which is beneficial to shortening the lengths of the refrigerant pipes and water pipes, and further reducing the manufacturing cost of the thermal management system.

[0017] The above description is only an overview of the technical solutions of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be described exemplarily below. Obviously, the following described drawings are only some embodiments of the present application, and these exemplary descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0019] Figure 1 is a schematic flow diagram of the thermal management system of the embodiment of the present application;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the thermal management system shown;

[0021] Figure 3 is Figure 2 a schematic structural diagram of another perspective of the thermal management system shown;

[0022] Figure 4 is Figure 2 an exploded view of the fixing plate and the flow channel plate in the thermal management system shown;

[0023] Figure 5 is Figure 4Schematic structural diagram of the first flow channel plate in the shown flow channel plate;

[0024] Figure 6 is Figure 4 Schematic structural diagram of the second flow channel plate in the shown flow channel plate. Specific embodiments

[0025] For ease of understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not used to limit the present application. The terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of the present application, the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above terms have no special meaning and therefore cannot be construed as limiting the protection scope of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not used to limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0029] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] Such as Figure 1As shown, an embodiment of the present application provides a new energy vehicle, including an automotive thermal management system, which is an important factor affecting the market competitiveness of new energy vehicles. The thermal management system includes a coolant circuit and a refrigerant circuit, and the coolant circuit and the refrigerant circuit form different circuits according to the requirements of different thermal management modes. The refrigerant medium can be R134A, R1214YF, R290, CO2, etc.; the water medium can be water, a water-ethylene glycol mixture, etc.

[0031] In some embodiments, the coolant circuit includes a motor 210, a first water pump 410, a radiator 230, a three-way water valve 500, a first heat exchanger 310, a six-way water valve 600, a battery 220, a second heat exchanger 320, a second water pump 420, a third heat exchanger 330, a PTC heater 240, and a heater core 250.

[0032] The refrigerant circuit includes a compressor 110, a third heat exchanger 330, an outdoor condenser 120, a solenoid valve 150, a first throttling element 160, a first heat exchanger 310, a second throttling element 170, a second heat exchanger 320, a gas-liquid separator 140, a third throttling element 180, and an evaporator (EVAP) 130.

[0033] In some embodiments, the coolant circuit includes a first coolant circuit, and / or a second coolant circuit, and / or a third coolant circuit, and / or a fourth coolant circuit.

[0034] In some embodiments, the first coolant circuit includes: the motor 210, the first and second interface passages of the six-way water valve 600, the first channel of the first heat exchanger 310, the first and third interface passages of the three-way water valve 500, the first water pump 410, and the motor 210 connected in series in sequence. At this time, the first heat exchanger 310 absorbs the heat source of the motor 210 for the evaporator.

[0035] In some embodiments, the radiator 230 is disposed between the first heat exchanger 310 and the first water pump 410.

[0036] In some embodiments, the second coolant circuit includes: the motor 210, the first and second interface passages of the six-way water valve 600, the first channel of the first heat exchanger 310, the first and second interface passages of the three-way water valve 500, the radiator 230, the first water pump 410, and the motor 210 connected in series in sequence. At this time, the first heat exchanger 310 absorbs the heat source of the motor 210 for the evaporator.

[0037] The third coolant circuit includes: the battery 220, the fifth and sixth interface passages of the six-way water valve 600, the second water pump 420, the first channel of the second heat exchanger 320, and the battery 220 connected in series in sequence.

[0038] The fourth coolant circuit includes: the PTC heater 240, the heater core 250, the third and fourth interface passages of the six-way water valve 600, the third water pump 430, the first passage of the third heat exchanger 330, and the PTC heater 240 connected in series in sequence.

[0039] In some embodiments, the refrigerant circuit includes a first refrigerant circuit, and / or a second refrigerant circuit, and / or a third refrigerant circuit, and / or a fourth refrigerant circuit.

[0040] In some embodiments, the first refrigerant circuit includes: the compressor 110, the second passage of the third heat exchanger 330, the first throttling element 160, the second passage of the first heat exchanger 310, the gas-liquid separator 140, and the compressor 110 connected in series in sequence.

[0041] The second refrigerant circuit includes: the compressor 110, the second passage of the third heat exchanger 330, the solenoid valve 150, the outdoor condenser 120, the second throttling element 170, the second passage of the second heat exchanger 320, the gas-liquid separator 140, and the compressor 110 connected in series in sequence;

[0042] The third refrigerant circuit includes: the compressor 110, the second passage of the third heat exchanger 330, the solenoid valve 150, the outdoor condenser 120, the third throttling element 180, the evaporator (EVAP) 130, the gas-liquid separator 140, and the compressor 110 connected in series in sequence. At this time, the third heat exchanger 330 is a water-cooled condenser.

[0043] In some embodiments, the compressor 110 is mainly used for compressing and conveying the gaseous refrigerant medium, and its structural type is not limited, and it can be one of the electric compressors.

[0044] In some embodiments, the setting of the third heat exchanger 330 can adjust the temperature of the refrigerant medium entering the outdoor condenser 120.

[0045] In some embodiments, through the setting of the third throttling element 180, the flow rate of the refrigerant medium flowing into the evaporator (EVAP) 130 is controlled and the refrigerant medium flowing into the evaporator (EVAP) 130 is throttled and depressurized.

[0046] In some embodiments, a temperature sensor is arranged on the surface of the evaporator (EVAP) 130 to detect the surface temperature of the evaporator (EVAP) 130. The heater core 250 is controlled by low voltage electricity, placed behind the evaporator (EVAP) 130, and placed close to the evaporator (EVAP) 130. In a low-temperature environment, it can exchange heat with the air blown out by the heater core 250 to heat the air and blow it into the passenger compartment for heating.

[0047] In some embodiments, the evaporator (EVAP) 130 and the heater core 250 are arranged side by side to jointly form a heating, ventilation, and air conditioning (HVAC) box.

[0048] In some embodiments, when dehumidifying the passenger compartment at medium and low ambient temperatures, the high-temperature and high-pressure refrigerant medium flowing out of the compressor 110 flows into the outdoor condenser 120 and releases heat at the outdoor condenser 120 to achieve heating of the passenger compartment. After heat exchange, the refrigerant medium is divided into two paths. One path flows into the evaporator (EVAP) 130 through the third refrigerant circuit and exchanges heat with the relatively humid air inhaled from the passenger compartment into the HVAC box. The other path directly flows back to the compressor 110 through the second refrigerant circuit; if dehumidifying at high ambient temperatures, the second refrigerant circuit can be closed and there is no need for circulation, and the evaporator (EVAP) 130 itself can complete dehumidification without frosting. The purpose of adding the second refrigerant circuit is to divert the refrigerant medium flowing into the evaporator (EVAP) 130 at medium and low ambient temperatures, that is, to control the flow rate of the refrigerant medium flowing into the evaporator (EVAP) 130, so as to control the heat exchange of the evaporator (EVAP) 131, enabling the dehumidification mode of the thermal management system to cover high, medium, and low temperatures and broadening the dehumidification application temperature range of the new energy thermal management system. By controlling the opening degree of the third throttle member 180, the flow rate of the refrigerant medium in the third refrigerant circuit and the surface temperature of the evaporator (EVAP) 130 can be adjusted. The larger the opening degree of the third throttle member 180, the higher the surface temperature of the evaporator (EVAP) 130. If the opening degree of the third throttle member 180 is fully open and the surface temperature of the evaporator (EVAP) 130 is still below 0°C, then the second refrigerant circuit needs to be opened to divert a part of the refrigerant medium into the second refrigerant circuit, thereby adjusting the flow rate of the refrigerant medium flowing into the evaporator (EVAP) 130 and the surface temperature of the evaporator (EVAP) 130, so that the surface temperature of the evaporator (EVAP) 130 is maintained at an appropriate temperature, and the moist air condenses and dehumidifies on the surface of the evaporator (EVAP) 130, achieving dehumidification of the passenger compartment without frosting or icing on the surface of the evaporator (EVAP) 130.

[0049] By setting the second refrigerant circuit, flexible adjustment of the flow rate of the refrigerant medium in the third refrigerant circuit and the surface temperature of the evaporator (EVAP) 130 can be achieved, while having no impact on the flow of the refrigerant medium in the refrigerant circuit, ensuring the overall stable operation of the vehicle thermal management system.

[0050] In some embodiments, by setting a second throttle member 170 and a second heat exchanger 320 in the second refrigerant circuit, the temperature of the refrigerant medium flowing out of the outdoor condenser 120 can be adjusted more effectively.

[0051] In some embodiments, the first channel and the second channel of the second heat exchanger 320 are isolated from each other. The outlet of the outdoor condenser 120 and the inlet of the compressor 110 are respectively connected to both ends of the second channel of the second heat exchanger 320, and the first channel of the second heat exchanger 320 is connected to the coolant circuit. That is, the refrigerant medium flows in the second channel, and the water medium flows in the first channel to achieve heat exchange between the refrigerant medium and the water medium.

[0052] In some embodiments, the refrigerant medium and the water medium flow in opposite directions to increase the heat exchange area, extend the heat exchange time, and improve the heat exchange effect. A second throttle member 170 is provided in front of the inlet of the first channel of the second heat exchanger 320, and the opening degree of the second throttle member 170 is adjusted according to the heat exchange requirement of the refrigerant medium in the first channel.

[0053] In some embodiments, the first channel and the second channel of the third heat exchanger 330 are isolated from each other. The inlet of the outdoor condenser 120 and the outlet of the compressor 110 are respectively connected to both ends of the second channel of the third heat exchanger 330, and the first channel of the third heat exchanger 330 is connected to the coolant circuit. That is, the refrigerant medium flows in the second channel, and the water medium flows in the first channel to achieve heat exchange between the refrigerant medium and the water medium.

[0054] In some embodiments, the first channel and the second channel of the first heat exchanger 310 are isolated from each other. The second channel of the third heat exchanger 330 and the inlet of the gas-liquid separator 140 are respectively connected to both ends of the second channel of the first heat exchanger 310, and the first channel of the first heat exchanger 310 is connected to the coolant circuit. That is, the refrigerant medium flows in the second channel, and the water medium flows in the first channel to achieve heat exchange between the refrigerant medium and the water medium.

[0055] In some embodiments, in order to prevent the liquid refrigerant medium from entering the compressor 110 and damaging the compressor 110, a gas-liquid separator 140 is provided in front of the inlet of the compressor 110 in this embodiment. The structure of the gas-liquid separator 140 can be a casing type or a U-tube type, and the structure is not limited. The inlet of the gas-liquid separator 140 is connected to the first channel of the second heat exchanger 320. That is, the refrigerant medium flowing out of the first channel of the second heat exchanger 320 flows into the gas-liquid separator 140. After gas-liquid separation, the gaseous refrigerant medium flows back into the compressor 110, and the liquid refrigerant medium is recovered and stored in the gas separation tank.

[0056] In some embodiments, the vehicle thermal management system further includes a refrigeration mode. In these modes, when the refrigerant medium flows through the outdoor condenser 120, heating is not required. To reduce the heat loss of the refrigerant medium at the outdoor condenser 120 and improve the refrigeration performance, a solenoid valve (R-SOV) 150 is provided in the refrigerant circuit. Thus, when the system does not need heating, the solenoid valve (R-SOV) 150 can be opened so that the high-temperature and high-pressure refrigerant medium flowing out of the compressor 110 does not flow through the outdoor condenser 120 and directly flows to the compressor 110 through the first refrigerant circuit.

[0057] In some embodiments, by providing a first throttling member 160 in the first refrigerant circuit, one end of the first throttling member 160 is connected to the outlet of the compressor 110, and the other end is connected to the inlet of the compressor 110. Specifically, one end of the first throttling member 160 is connected to the third heat exchanger 330, and the other end is connected to the inlet of the gas-liquid separator 140 through the first heat exchanger. In a lower temperature environment, when the new energy vehicle is cold-started and the occupant compartment requires heating, the gaseous refrigerant medium at the outlet of the compressor 110 is diverted to the inlet of the gas-liquid separator 190 to increase the suction density and efficiency, thereby improving the heat pump capacity of the vehicle's thermal management.

[0058] In some embodiments, in order to more precisely control the opening degrees of the first throttling member 160, the second throttling member 170, and the third throttling member 180 to more effectively regulate the temperature of the refrigerant medium, the refrigerant circuit is further provided with a first temperature sensor (R-T1) 190a, a second temperature sensor (R-T2) 190b, a third temperature sensor (R-T3) 190c, and a fourth temperature sensor (R-T4) 190d. The first temperature sensor (R-T1) 190a is provided at the outlet of the compressor 110 to monitor the temperature of the refrigerant medium at the outlet of the compressor 110 in real time. The second temperature sensor (R-T2) 190b is provided at the outlet of the outdoor condenser 120 to monitor the temperature of the refrigerant medium at the outlet of the outdoor condenser 120 in real time. The third temperature sensor (R-T3) 190c is provided at the outlet of the evaporator (EVAP) 130 to monitor the temperature of the refrigerant medium at the outlet of the evaporator (EVAP) 130 in real time. The fourth temperature sensor (R-T4) 190d is provided at the outlet of the second channel of the second heat exchanger 320 to monitor the temperature of the refrigerant medium at the outlet of the second channel of the second heat exchanger 320 in real time.

[0059] In some embodiments, a first temperature and pressure sensor (PT-L1) 190e and a second temperature and pressure sensor (PT-H1) 190f are respectively provided at the inlet and outlet of the compressor 110 to monitor the superheat degree of the refrigerant medium at the inlet and outlet of the compressor 110 in real time. Specifically, the second temperature and pressure sensor (PT-H1) 190f is provided at the outlet of the second channel of the third heat exchanger 330.

[0060] In some embodiments, for the waste heat recovery of the motor 210: it can be adopted when the ambient temperature is above -5°C. At this time, the compressor 110 operates, the solenoid valve (R-SOV) 150 is closed, the second throttle member (EXV2) 170 is fully closed, the third throttle member 180 (EXV3) is fully closed, the first throttle member (EXV1) 160 adjusts the number of steps, the first water pump 410 and the third water pump 430 are turned on, the first three-port passage of the three-way water valve 500, the first two-port passage of the six-way water valve 600, the third-fourth port passage of the six-way water valve 600, and the fifth-sixth port passage of the six-way water valve 600. At this time, the first heat exchanger 310 acts as an evaporator to absorb the heat source of the motor, and the third heat exchanger 330 acts as a water-cooled condenser to transfer the heat to the heater of the HVAC 250 to achieve heating of the passenger compartment; when the temperature is below -5°C, turn on the PTC heater 240 for heating.

[0061] In some embodiments, for the battery 220 source heat pump: it can be adopted when the ambient temperature is above -5°C. At this time, the compressor 110 operates, the solenoid valve (R-SOV) 150 is turned on, the second throttle member (EXV2) 170 adjusts the number of steps, the first throttle member (EXV1) 160 is fully closed, the third throttle member 180 (EXV3) is fully closed, the second water pump 420 is turned on, the third water pump 430 is turned on, the first two-port passage of the six-way water valve 600, the third-fourth port passage of the six-way water valve 600, and the fifth-sixth port passage of the six-way water valve 600. At this time, the second heat exchanger 320 acts as an evaporator to absorb the heat source of the battery 220 (i.e., to cool the battery), and the third heat exchanger 330 acts as a water-cooled condenser to transfer the heat to the heater of the HVAC to achieve heating of the passenger compartment; when the temperature is below -5°C, turn on the PTC for heating.

[0062] In some embodiments, as Figure 2 and Figure 3 shown, the above-mentioned first heat exchanger 310, second heat exchanger 320 and third heat exchanger 330 together form the heat exchanger 300. That is, the heat exchanger 300 includes the first heat exchanger 310, the second heat exchanger 320 and the third heat exchanger 330.

[0063] In some embodiments, the above-mentioned first water pump 410, second water pump 420 and third water pump 430 together form the pump body 400. That is, the pump body 400 includes the first water pump 410, the second water pump 420 and the third water pump 430.

[0064] In some embodiments, the thermal management system includes a fixing plate 100 and a flow channel plate 200. The fixing plate 100 includes a first surface 101 and a second surface 102 which are oppositely arranged; the flow channel plate 200 includes a third surface 201 and a fourth surface 202 which are oppositely arranged. The heat exchanger 300 is disposed on the first surface 101, the flow channel plate 200 is disposed on the second surface 102, and the pump body 400 is disposed on the side of the flow channel plate 200 away from the fixing plate 100. Specifically, the third surface 201 faces the second surface 102, and the pump body 400 is disposed on the fourth surface 202. Among them, the water pipes of the coolant circuit are integrated in the flow channel plate 200, and the refrigerant pipes of the refrigerant circuit are disposed between the fixing plate 100 and the flow channel plate 200. Thereby, the lengths of the refrigerant pipes and the water pipes can be shortened, the structure can be made compact, and the vehicle space can be saved.

[0065] It should be noted that the components in the coolant circuit are connected through water pipes. The components in the refrigerant circuit are connected through refrigerant pipes.

[0066] In some embodiments, as Figure 4 shown, a plurality of interfaces 103 are provided on the fixing plate 100, and the interfaces 103 are used for the heat exchanger 300 to communicate with the water pipes in the flow channel plate 200. It can be understood that the interfaces penetrate through the first surface and the second surface of the fixing plate.

[0067] In some embodiments, as Figure 5 shown, a plurality of heat exchange interfaces 203 communicating with the heat exchanger 300 are provided on the flow channel plate 200, and the water pipes in the flow channel plate 200 communicate with the corresponding heat exchangers through their respective heat exchange interfaces 203 via the interfaces 103.

[0068] In some embodiments, as Figure 5 and Figure 6 shown, the flow channel plate 200 includes a first flow channel plate 200a and a second flow channel plate 200b, and the first flow channel plate 200a and the second flow channel plate 200b are buckled together to jointly form the water pipes of the coolant circuit.

[0069] In some embodiments, the first flow channel plate 200a communicates with the heat exchanger 300 through the heat exchange interface 203.

[0070] In some embodiments, a first water valve interface 204 and a second water valve interface 205 are provided on the second flow channel plate 200b. The first water valve interface 204 is used to connect with a three-way water valve 500, and the second water valve interface 205 is used to connect with a six-way water valve 600.

[0071] In some embodiments, the second flow channel plate 200b is provided with a first water pump interface 206, a second water pump interface 207, and a third water pump interface 208. The first water pump interface 206 is used to connect to the first water pump 410, the second water pump interface 207 is used to connect to the second water pump 420, and the third water pump interface 208 is used to connect to the third water pump 430.

[0072] In some embodiments, the gas-liquid separator 140 is fixed to the side of the fixing plate 100, and this side is perpendicular to the first surface 101 and the second surface 102. Alternatively, the gas-liquid separator 140 is fixed to the fixing plate 100 through an attachment plate.

[0073] In some embodiments, to reduce the distance between the heat exchanger 300 and the pump body 400 and shorten the lengths of the refrigerant pipes and water pipes, the first heat exchanger 310, the second heat exchanger 320, and the third heat exchanger 330 are arranged in a triangle, such as an equilateral triangle arrangement; the first water pump 410, the second water pump 420, and the third water pump 430 are arranged in a triangle, such as an equilateral triangle arrangement.

[0074] The thermal management system and the new energy vehicle provided by the embodiments of the present application respectively arrange the heat exchanger and the pump body on the first surface and the second surface of the fixing plate to reduce the distance between the two and improve the space utilization rate of the thermal management system; in addition, by integrating the water pipes of the coolant circuit into the flow channel plate and arranging the refrigerant pipes of the refrigerant circuit between the fixing plate and the flow channel plate, it is avoided that the water pipes and refrigerant pipes are too scattered, which is beneficial to shortening the lengths of the refrigerant pipes and water pipes, and further reducing the manufacturing cost of the thermal management system.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above. For the sake of brevity, they are not provided in detail; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A thermal management system is applied to a new energy vehicle, including a coolant circuit and a refrigerant circuit, characterized in that, Comprising: A fixing plate, including a first surface and a second surface arranged opposite to each other; A heat exchanger, arranged on the first surface; A flow channel plate, arranged on the second surface, wherein the water pipes of the coolant circuit are integrated in the flow channel plate, and the refrigerant pipes of the refrigerant circuit are arranged between the fixing plate and the flow channel plate; A pump body, arranged on the side of the flow channel plate away from the fixing plate.

2. The thermal management system according to claim 1, characterized in that The coolant circuit includes a motor, a six-way water valve and a three-way water valve; The heat exchanger includes a first heat exchanger, and the pump body includes a first water pump; The motor, the first and second interface passage of the six-way water valve, the first channel of the first heat exchanger, the first and third interface passage of the three-way water valve, the first water pump, and the motor are connected in series in sequence to form a first coolant circuit.

3. The thermal management system according to claim 2, characterized in that The coolant circuit includes a radiator, and the radiator is arranged between the first heat exchanger and the first water pump; The motor, the first and second interface passage of the six-way water valve, the first channel of the first heat exchanger, the first and second interface passage of the three-way water valve, the radiator, the first water pump, and the motor are connected in series in sequence to form a second coolant circuit.

4. The thermal management system according to claim 3, characterized in that The coolant circuit includes a battery; the pump body includes a second water pump; the heat exchanger includes a second heat exchanger; The battery, the fifth and sixth interface passage of the six-way water valve, the second water pump, the first channel of the second heat exchanger, and the battery are connected in series in sequence to form a third coolant circuit.

5. The thermal management system according to claim 4, characterized in that The coolant circuit includes a PTC heater and a heater core; the heat exchanger includes a third heat exchanger; the pump body includes a third water pump; The PTC heater, the heater core, the third and fourth interface passage of the six-way water valve, the third water pump, the first channel of the third heat exchanger, and the PTC heater are connected in series in sequence to form a fourth coolant circuit.

6. The thermal management system according to claim 5, characterized in that The refrigerant circuit includes a compressor, a first throttling element and a gas-liquid separator; The compressor, the second channel of the third heat exchanger, the first throttling element, the second channel of the first heat exchanger, the gas-liquid separator, and the compressor are connected in series in sequence to form a first refrigerant circuit.

7. The thermal management system according to claim 6, characterized in that The refrigerant circuit includes an electromagnetic valve, an outdoor condenser and a second throttling element; The compressor, the second channel of the third heat exchanger, the electromagnetic valve, the outdoor condenser, the second throttling element, the second channel of the second heat exchanger, the gas-liquid separator, and the compressor are connected in series in sequence to form a second refrigerant circuit.

8. The thermal management system according to claim 7, characterized in that The refrigerant circuit includes a third throttling element and an evaporator; The compressor, the second channel of the third heat exchanger, the solenoid valve, the outdoor condenser, the third throttling element, the evaporator, the gas-liquid separator, and the compressor are connected in series in sequence to form a third refrigerant circuit.

9. The thermal management system according to claim 8, wherein the first heat exchanger, the second heat exchanger, and the third heat exchanger are plate heat exchangers; and / or the first heat exchanger, the second heat exchanger, and the third heat exchanger are arranged in an equilateral triangle; and / or the first water pump, the second water pump, and the third water pump are arranged in an equilateral triangle.

10. A new energy vehicle, characterized in that, It includes the thermal management system according to any one of claims 1 to 9.

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