Heat exchanger and vehicle heat management system
By introducing a main heat exchange chamber and an auxiliary heat exchange chamber into the heat exchanger, the heat exchange medium to be exchanged is heated by a low-temperature indirect heat exchange medium, which solves the problem of difficult temperature adjustment of the heat exchange medium and realizes precise control of the outlet temperature of the heat exchange medium and adjustment of the heat exchange capacity.
Patent Information
- Application Number
- CN202520374021.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In some applications, the temperature of the heat exchange medium in existing heat exchangers is difficult to adjust, which makes it difficult to control the outlet temperature of the heat exchange medium and meet the requirements.
A heat exchanger comprising a main heat exchange cavity and an auxiliary heat exchange cavity was designed. Heat exchange is performed in the auxiliary heat exchange cavity through the main heat exchange medium and the indirect heat exchange medium. The medium to be exchanged is heated by the low-temperature indirect heat exchange medium, thereby achieving the regulation of the temperature and heat exchange capacity of the medium to be exchanged.
It enables precise adjustment of the outlet temperature of the heat exchange medium, meeting different needs and improving the applicability and selectivity of the heat exchanger.
Smart Images
Figure CN223965924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal management system technology, and in particular to a heat exchanger and a vehicle thermal management system. Background Technology
[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers are widely used in many fields. Typically, a heat exchanger consists of a heat exchange medium flow channel and a channel for the medium to be heated. When a heat exchanger is used as a heater, the heat exchange medium provides heat to the medium to be heated. In some applications, the temperature of the heat exchange medium is difficult to regulate. If the temperature of the heat exchange medium is high, while the temperature of the medium to be heated is low, the heat exchange process is difficult to control, and it is difficult to obtain the required outlet temperature of the medium to be heated. Existing heat exchangers are inconvenient to use in such cases. Utility Model Content
[0003] The purpose of this utility model is to provide a heat exchanger and a vehicle thermal management system to solve, to a certain extent, the technical problems existing in the prior art in some application fields, such as the difficulty in adjusting the temperature of the heat exchange medium, the difficulty in controlling the heat exchange process if the temperature of the heat exchange medium is high while the temperature of the medium to be exchanged is low, the difficulty in obtaining the required outlet temperature of the medium to be exchanged, and the inconvenience of using existing heat exchangers.
[0004] This utility model provides a heat exchanger, comprising: a shell, including a main heat exchange chamber and an auxiliary heat exchange chamber separated from each other; the shell is provided with an inlet for the heat exchange medium, an inlet for an indirect heat exchange medium, and a main heat exchange medium inlet; a main heat exchange core, the main heat exchange core including a first medium flow channel and a second medium flow channel; the main heat exchange core is disposed within the main heat exchange chamber; the inlet for the heat exchange medium is connected to the first medium flow channel; an auxiliary heat exchange core, the auxiliary heat exchange core including a third medium flow channel and a fourth medium flow channel; the auxiliary heat exchange core is disposed within the auxiliary heat exchange chamber; the inlet of the third medium flow channel is connected to the indirect heat exchange medium inlet, the outlet of the third medium flow channel is connected to the second medium flow channel, and the fourth medium flow channel is connected to the main heat exchange medium inlet.
[0005] When it is necessary to lower the temperature of the main heat exchange medium, the main heat exchange medium can be introduced into the fourth medium flow channel through the main heat exchange medium inlet, the indirect heat exchange medium can be introduced into the third medium flow channel through the indirect heat exchange medium inlet, and the medium to be heat exchanged can be introduced into the first medium flow channel through the medium to be heat exchanged inlet. The main heat exchange medium and the indirect heat exchange medium exchange heat in the auxiliary heat exchange cavity through the indirect heat exchange core, the indirect heat exchange medium heats up, and the heated indirect heat exchange medium enters the second medium flow channel through the third medium flow channel. The heated indirect heat exchange medium exchanges heat with the medium to be heat exchanged in the first medium flow channel in the main heat exchange core, thereby heating the medium to be heat exchanged.
[0006] The heat exchanger provided by this invention can heat the indirect heat exchange medium (which is at a lower temperature than the main heat exchange medium) to raise its temperature, thereby heating the medium to be exchanged. This allows for the regulation of the temperature of the heat exchange medium and, consequently, the regulation of the heat exchange capacity of the medium, thus meeting the heat exchange requirements of the medium and ensuring that the outlet temperature of the medium meets the requirements. Furthermore, regulating the heat exchange capacity of the medium also allows for the regulation of its outlet temperature.
[0007] Furthermore, the main heat exchange core includes a plurality of main pipes arranged sequentially at intervals and connected to each other. The main pipes form the first medium flow channel, and the interval between two adjacent main pipes forms the second medium flow channel. A gap is provided between the main heat exchange core and the inner wall of the main heat exchange cavity to form a main heat exchange channel, and the main heat exchange channel is connected to the second medium flow channel.
[0008] Furthermore, the auxiliary heat exchange core includes a plurality of auxiliary pipes arranged sequentially at intervals and connected to each other, the auxiliary pipes forming the third medium flow channel, and the interval between two adjacent auxiliary pipes forming the fourth medium flow channel; a gap is provided between the auxiliary heat exchange core and the inner wall of the auxiliary heat exchange cavity to form an auxiliary heat exchange channel, and the auxiliary heat exchange channel is connected to the fourth medium flow channel.
[0009] Furthermore, the auxiliary heat exchange core includes an outflow pipe, and the outlets of the plurality of third medium flow channels are all connected to the outflow pipe; the outer shell is provided with a partition that divides the inner cavity of the outer shell into the main heat exchange cavity and the auxiliary heat exchange cavity, and the partition is provided with a connection hole, one side of the connection hole is connected to the outflow pipe, and the other side is connected to the main heat exchange channel.
[0010] Furthermore, fins are provided in both the second medium flow channel and the fourth medium flow channel.
[0011] Furthermore, there are two main heat exchange medium inlets, one of which is connected to the auxiliary heat exchange channel and the other is connected to the main heat exchange channel; a main heat exchange medium valve is provided at the main heat exchange medium inlet.
[0012] Furthermore, an indirect heat exchange medium valve is provided at the inlet of the indirect heat exchange medium.
[0013] Furthermore, the auxiliary heat exchange cavity is also provided with a direct heat exchange core, which includes a fifth medium flow channel and a sixth medium flow channel; the outer shell is provided with a direct heat exchange medium inlet and a direct heat exchange medium outlet, the fifth medium flow channel is connected to the direct heat exchange medium inlet, and the sixth medium flow channel is connected to the direct heat exchange medium outlet.
[0014] Furthermore, there are multiple main heat exchange cores, and the first medium flow channel in each main heat exchange core is used to flow different heat exchange media.
[0015] This utility model provides a vehicle thermal control system, including: an exhaust gas pipe, an air pipe, and a heat exchanger as described above, wherein the exhaust gas pipe is connected to the main heat exchange medium inlet, and the air pipe is connected to the inlet of the indirect heat exchange medium.
[0016] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a heat exchanger according to an embodiment of the present invention;
[0019] Figure 2 for Figure 1 The cross-sectional view of the heat exchanger shown is shown.
[0020] Figure 3 This is a schematic diagram of the structure of a heat exchanger according to another embodiment of the present invention.
[0021] Icons: 1-Outer shell; 2-Main heat exchanger core; 3-Auxiliary heat exchanger core; 4-Main heat exchange medium valve; 5-Indirect heat exchange medium valve; 6-Direct heat exchanger core; 11-Baffle; 12-Inlet of heat exchange medium; 13-Indirect heat exchange medium inlet; 14-Main heat exchange medium inlet; 15-Auxiliary heat exchange channel; 16-Main heat exchange channel; 17-Outlet of heat exchange medium; 18-Auxiliary heat exchange outlet; 19-Main heat exchange outlet; 110-Main heat exchange chamber; 120-Auxiliary heat exchange chamber; 130-Connecting hole; 140-Direct heat exchange medium inlet; 150-Direct heat exchange medium outlet; 21-First medium flow channel; 22-Second medium flow channel; 31-Third medium flow channel; 32-Fourth medium flow channel; 33-Outlet pipe; 61-Fifth medium flow channel; 62-Sixth medium flow channel. Detailed Implementation
[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0023] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0024] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] like Figures 1 to 3As shown, this utility model provides a heat exchanger, including: a shell 1, a main heat exchange core 2, and an auxiliary heat exchange core 3; the shell 1 includes a main heat exchange cavity 110 and an auxiliary heat exchange cavity 120 separated from each other; the shell 1 is provided with a heat exchange medium inlet 12, an indirect heat exchange medium inlet 13, and a main heat exchange medium inlet 14; the main heat exchange core 2 includes a first medium flow channel 21 and a second medium flow channel 22; the main heat exchange core 2 is disposed in the main heat exchange cavity 110; the heat exchange medium inlet 12 is connected to the first medium flow channel 21; the auxiliary heat exchange core 3 includes a third medium flow channel 31 and a fourth medium flow channel 32; the auxiliary heat exchange core 3 is disposed in the auxiliary heat exchange cavity 120; the inlet of the third medium flow channel 31 is connected to the indirect heat exchange medium inlet 13, the outlet of the third medium flow channel 31 is connected to the second medium flow channel 22, and the fourth medium flow channel 32 is connected to the main heat exchange medium inlet 14.
[0029] In this embodiment, when it is necessary to reduce the temperature of the main heat exchange medium, the main heat exchange medium can be introduced into the fourth medium flow channel 32 through the main heat exchange medium inlet 14, the indirect heat exchange medium can be introduced into the third medium flow channel 31 through the indirect heat exchange medium inlet 13, and the medium to be heat exchanged can be introduced into the first medium flow channel 21 through the medium to be heat exchanged inlet 12. The main heat exchange medium and the indirect heat exchange medium exchange heat in the auxiliary heat exchange cavity 120 through the auxiliary heat exchange core 3. The indirect heat exchange medium heats up, and the heated indirect heat exchange medium enters the second medium flow channel 22 through the third medium flow channel 31. The heated indirect heat exchange medium exchanges heat with the medium to be heat exchanged in the first medium flow channel 21 in the main heat exchange core 2, thereby heating the medium to be heat exchanged.
[0030] The heat exchanger provided in this embodiment can heat the indirect heat exchange medium (whose temperature is lower than that of the main heat exchange medium) to raise its temperature, thereby heating the medium to be exchanged. This allows for the regulation of the temperature of the heat exchange medium and, consequently, the regulation of the amount of heat exchanged by the medium, thus meeting the heat exchange requirements of the medium and ensuring that the outlet temperature of the medium meets the requirements. Furthermore, regulating the amount of heat exchanged by the medium also regulates its outlet temperature.
[0031] The primary and indirect heat exchange media can be selected as needed. They can be the same type, or they can be mixed without reacting. For example, the primary heat exchange media could be vehicle exhaust gas, and the indirect heat exchange media could be air. Of course, other media of the same type or those that do not react when mixed can also be used; there are no restrictions.
[0032] Specifically, the main heat exchange core 2 includes multiple (at least two, for example: two, three, four, five, or six, etc.) main pipes arranged at intervals and connected in sequence (or, in other words, multiple main pipes arranged and connected in sequence along a set direction). The main pipes form a first medium flow channel 21, and the interval between two adjacent main pipes forms a second medium flow channel 22. A gap is provided between the main heat exchange core 2 and the inner wall of the main heat exchange cavity 110 to form a main heat exchange channel 16, which is connected to the second medium flow channel 22. In the direction of the stacking of multiple main pipes, the inlet 12 of the medium to be exchanged is connected to one side of the main pipe, and the outlet 17 of the medium to be exchanged is connected to the other side of the main pipe.
[0033] In this embodiment, the second medium flow channel 22 is open, and the main heat exchange channel 16 is connected to the second medium flow channel 22 at all times. When the medium enters the main heat exchange chamber 110, it can quickly enter each of the second medium flow channels 22 through the main heat exchange channel 16.
[0034] The auxiliary heat exchange core 3 includes multiple (at least two, for example: two, three, four, five or six, etc.) auxiliary pipes that are arranged and connected in sequence at intervals (or, in other words, multiple auxiliary pipes are arranged and connected in sequence along a set direction). The auxiliary pipes form a third medium flow channel 31, and the interval between two adjacent auxiliary pipes forms a fourth medium flow channel 32. There is a gap between the auxiliary heat exchange core 3 and the inner wall of the auxiliary heat exchange cavity 120 to form an auxiliary heat exchange channel 15, which is connected to the fourth medium flow channel 32.
[0035] In this embodiment, the fourth medium flow channel 32 is open, and the auxiliary heat exchange channel 15 is connected to the fourth medium flow channel 32 at all times. When the medium enters the auxiliary heat exchange chamber 120, it can quickly enter each of the fourth medium flow channels 32 through the auxiliary heat exchange channel 15.
[0036] Based on the above embodiments, there are various ways to realize that the outer shell 1 includes a main heat exchange cavity 110 and an auxiliary heat exchange cavity 120 that are separated. For example, the outer shell 1 includes a first shell and a second shell that are independent of each other. The inner cavity of the first shell forms the main heat exchange cavity 110, and the inner cavity of the second shell forms the auxiliary heat exchange cavity 120. The first shell is provided with a first through hole that communicates with the main heat exchange cavity 110, and the second shell is provided with a second through hole that communicates with the auxiliary heat exchange cavity 120. One end of the intermediate pipe extends into the main heat exchange cavity 110, and the other end extends into the auxiliary heat exchange cavity 120 and communicates with the third medium flow channel 31, so that the indirect heat exchange medium flows into the main heat exchange cavity 110 from the third medium flow channel 31.
[0037] As an alternative, the outer shell 1 is a single unit, and the inner cavity of the outer shell 1 is provided with a partition 11 that divides the inner cavity of the outer shell 1 into a main heat exchange chamber 110 and an auxiliary heat exchange chamber 120, making the heat exchanger structure compact and easy to assemble.
[0038] Based on the above embodiments, the auxiliary heat exchange core 3 further includes an outflow pipe 33, and the outlets of the multiple third medium flow channels 31 are all connected to the outflow pipe 33 (when the auxiliary heat exchange core 3 includes multiple auxiliary pipes that are arranged in sequence at intervals and connected, in the direction of stacking of multiple auxiliary pipes, the indirect heat exchange medium inlet 13 is connected to one side of the auxiliary pipe, and the outflow pipe 33 is connected to the other side of the auxiliary pipe); the partition plate 11 is provided with a connection hole 130, one side of the connection hole 130 is connected to the outflow pipe 33, and the other side is connected to the main heat exchange channel 16.
[0039] In this embodiment, the indirect heat exchange medium enters the outflow pipe 33 through the third medium flow channel 31, then enters the main heat exchange chamber 110 through the connecting hole 130, and finally enters the second medium flow channel 22, which has a simple structure.
[0040] Based on the above embodiments, fins are further provided in both the second medium flow channel 22 and the fourth medium flow channel 32. Protrusions or other structures can also be provided on the outer wall of the main pipe or auxiliary pipe to improve the heat exchange efficiency of the entire heat exchanger.
[0041] like Figure 2 As shown, based on the above embodiment, there are two main heat exchange medium inlets 14, one of which is connected to the auxiliary heat exchange channel 15 and the other is connected to the main heat exchange channel 16; a main heat exchange medium valve 4 is provided at the main heat exchange medium inlet 14.
[0042] In this embodiment, when it is not necessary to lower the temperature of the main heat exchange medium, i.e., when the outlet temperature of the heat exchange medium is high, the main heat exchange medium valve 4 at the main heat exchange medium inlet 14 connected to the auxiliary heat exchange channel 15 can be closed, and the main heat exchange medium valve 4 at the main heat exchange medium inlet 14 connected to the main heat exchange channel 16 can be opened, stopping the supply of indirect heat exchange medium to the indirect heat exchange medium inlet 13. At this time, the heat exchange medium can directly exchange heat with the main heat exchange medium in the main heat exchange chamber 110. When it is necessary to lower the temperature of the main heat exchange medium, i.e., when the outlet temperature of the heat exchange medium is low, the main heat exchange medium valve 4 at the main heat exchange medium inlet 14 connected to the auxiliary heat exchange channel 15 can be opened, and the main heat exchange medium valve 4 at the main heat exchange medium inlet 14 connected to the main heat exchange channel 16 can be closed, supplying indirect heat exchange medium to the indirect heat exchange medium inlet 13. At this time, the heat exchange medium can directly exchange heat with the indirect heat exchange medium in the main heat exchange chamber 110. It is also possible to open both main heat exchange medium valves 4, and mix the main heat exchange medium and the indirect heat exchange medium in the main heat exchange chamber 110. The flow rate of the mixture of the main heat exchange medium and the indirect heat exchange medium can be adjusted by regulating the opening degree of the main heat exchange medium valve 4, thereby adjusting the temperature of the mixed medium. This allows for more precise adjustment of the outlet temperature of the heat exchange medium, improving the selectivity of the heat exchanger and making it suitable for different needs.
[0043] like Figure 2 As shown, based on the above embodiment, an indirect heat exchange medium valve 5 is further provided at the indirect heat exchange medium inlet 13. This facilitates the control of the indirect heat exchange medium.
[0044] It is understood that a main heat exchange outlet 19 communicating with the main heat exchange chamber 110, an auxiliary heat exchange outlet 18 communicating with the auxiliary heat exchange chamber 120, and a heat exchange medium outlet 17 communicating with the first medium channel can be provided on the outer shell 1. After heat exchange, the heat exchange medium can be discharged through the heat exchange medium outlet 17, the main heat exchange medium in the auxiliary heat exchange chamber 120 can be discharged through the auxiliary heat exchange outlet 18, and the medium (indirect heat exchange medium, main heat exchange medium, or a mixture of main heat exchange medium and indirect heat exchange medium) in the main heat exchange chamber 110 can be discharged through the main heat exchange outlet 19 after heat exchange.
[0045] In addition, the positions of the heat exchange medium inlet 12, the indirect heat exchange medium inlet 13, the main heat exchange medium inlet 14, the heat exchange medium outlet 17, the auxiliary heat exchange outlet 18, and the main heat exchange outlet 19 on the outer shell 1 can be set as needed. The positions shown in the attached figure are just examples and are not limitations.
[0046] like Figure 3 As shown, based on the above embodiment, the auxiliary heat exchange cavity 120 is further provided with a direct heat exchange core 6, which includes a fifth medium flow channel 61 and a sixth medium flow channel 62; the outer shell 1 is provided with a direct heat exchange inlet 140 and a direct heat exchange medium outlet 150, the fifth medium flow channel 61 is connected to the direct heat exchange medium inlet 140, and the sixth medium flow channel 62 is connected to the direct heat exchange medium outlet 150.
[0047] In this embodiment, within the auxiliary heat exchange chamber 120, the medium to be heat exchanged enters the fifth medium flow channel 61 through the direct heat exchange medium inlet 140, while the main heat exchange medium flows through the sixth medium flow channel 62. Thus, the medium to be heat exchanged can exchange heat with the main heat exchange medium, and the heat-exchanged medium can be discharged through the direct heat exchange medium outlet 150. Therefore, heat exchange can be performed directly on the medium to be heat exchanged within the auxiliary heat exchange chamber 120, enabling heat exchange for mediums with different heat exchange requirements and improving the selectivity of the heat exchanger.
[0048] like Figure 3 As shown, based on the above embodiments, the number of main heat exchange cores 2 is further increased to multiple, and the first medium flow channel 21 in each main heat exchange core 2 can be used to flow different heat exchange media.
[0049] In this embodiment, heat exchange can be performed on different heat exchange media with the same heat exchange requirements.
[0050] An embodiment of this utility model also provides a vehicle thermal control system, including: an exhaust gas pipe, an air pipe, and a heat exchanger of any of the above technical solutions, wherein the exhaust gas pipe is connected to the main heat exchange medium inlet 14, and the air pipe is connected to the indirect heat exchange medium inlet 13.
[0051] In this embodiment, exhaust gas is used as the main heat exchange medium, which can utilize the exhaust gas generated by the vehicle to recover energy; air is used as an indirect heat exchange medium, which is low in cost.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. Numerous specific details are set forth in the specification provided herein. However, it is understood that embodiments of this utility model can be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this utility model and form different embodiments.
Claims
1. A heat exchanger, characterized in that, include: The outer shell (1) includes a main heat exchange chamber (110) and an auxiliary heat exchange chamber (120) that are separated from each other; the outer shell (1) is provided with a heat exchange medium inlet (12), an indirect heat exchange medium inlet (13) and a main heat exchange medium inlet (14); The main heat exchange core (2) includes a first medium flow channel (21) and a second medium flow channel (22); the main heat exchange core (2) is disposed in the main heat exchange cavity (110); the inlet (12) of the medium to be exchanged is connected to the first medium flow channel (21); An auxiliary heat exchange core (3) is provided, comprising a third medium flow channel (31) and a fourth medium flow channel (32); the auxiliary heat exchange core (3) is disposed within the auxiliary heat exchange cavity (120); the inlet of the third medium flow channel (31) is connected to the indirect heat exchange medium inlet (13), the outlet of the third medium flow channel (31) is connected to the second medium flow channel (22), and the fourth medium flow channel (32) is connected to the main heat exchange medium inlet (14).
2. The heat exchanger according to claim 1, characterized in that, The main heat exchange core (2) includes a plurality of main pipes arranged in sequence and connected to each other. The main pipes form the first medium flow channel (21), and the interval between two adjacent main pipes forms the second medium flow channel (22). A gap is provided between the main heat exchange core (2) and the inner wall of the main heat exchange cavity (110) to form a main heat exchange channel (16), which is connected to the second medium flow channel (22).
3. The heat exchanger according to claim 2, characterized in that, The auxiliary heat exchange core (3) includes a plurality of auxiliary pipes arranged at intervals and connected in sequence. The auxiliary pipes form the third medium flow channel (31), and the interval between two adjacent auxiliary pipes forms the fourth medium flow channel (32). A gap is provided between the auxiliary heat exchange core (3) and the inner wall of the auxiliary heat exchange cavity (120) to form an auxiliary heat exchange channel (15), which is connected to the fourth medium flow channel (32).
4. The heat exchanger according to claim 3, characterized in that, The auxiliary heat exchange core (3) includes an outlet pipe (33), and the outlets of the plurality of third medium flow channels (31) are all connected to the outlet pipe (33); The outer shell (1) is provided with a partition (11) that divides the inner cavity of the outer shell (1) into the main heat exchange chamber (110) and the auxiliary heat exchange chamber (120). The partition (11) is provided with a connecting hole (130). One side of the connecting hole (130) is connected to the outflow pipe (33), and the other side is connected to the main heat exchange channel (16).
5. The heat exchanger according to claim 3, characterized in that, Fins are provided in both the second medium flow channel (22) and the fourth medium flow channel (32).
6. The heat exchanger according to claim 3, characterized in that, There are two main heat exchange medium inlets (14), one of which is connected to the auxiliary heat exchange channel (15) and the other is connected to the main heat exchange channel (16); a main heat exchange medium valve (4) is provided at the main heat exchange medium inlet (14).
7. The heat exchanger according to claim 6, characterized in that, An indirect heat exchange medium valve (5) is provided at the inlet (13) of the indirect heat exchange medium.
8. The heat exchanger according to claim 1, characterized in that, The auxiliary heat exchange cavity (120) is also provided with a direct heat exchange core (6), which includes a fifth medium flow channel (61) and a sixth medium flow channel (62); the outer shell (1) is provided with a direct heat exchange medium inlet (140) and a direct heat exchange medium outlet (150), the fifth medium flow channel (61) is connected to the direct heat exchange medium inlet (140), and the sixth medium flow channel (62) is connected to the direct heat exchange medium outlet (150).
9. The heat exchanger according to claim 1, characterized in that, The number of main heat exchange cores (2) is multiple, and the first medium flow channel (21) in each main heat exchange core (2) is used to flow different heat exchange media.
10. A vehicle thermal management system, characterized in that, include: The exhaust gas duct, the air duct, and the heat exchanger as described in any one of claims 1-9, wherein the exhaust gas duct is connected to the main heat exchange medium inlet (14), and the air duct is connected to the indirect heat exchange medium inlet (13).