A heat exchange device

Abstract

The invention discloses a heat exchange device, including a first connecting pipe, a temperature control component, a first heat exchange core, and a second heat exchange core. The temperature control component is sealed and fixed to the end plate of the first heat exchange core. The temperature control component has a first channel, a first valve port, a second valve port, a second channel, and a third channel. A portion of the first connecting pipe is located within the first channel of the first heat exchange core. One end of the first connecting pipe is sealed and fixed to the temperature control component, and the other end of the first connecting pipe passes through the first plate and is sealed and fixed to the first plate. The first connecting pipe connects the second channel to the first channel of the second heat exchange core. When the first valve port is closed, the second valve port and the second channel connect the first channel and the first channel of the second heat exchange core. When the second valve port is closed, the first valve port and the third channel connect the first channel and the first channel of the first heat exchange core. This device can achieve the flow of coolant into the first heat exchange core for heat exchange or into the second heat exchange core for heat exchange based on the temperature of the flowing coolant. Moreover, it has a compact structure and occupies little space.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and more specifically to a heat exchange device. Background Technology

[0002] In a heat pump air conditioning system, there are refrigerant and coolant circulations. The refrigerant and coolant can exchange heat in a heat exchanger, and the coolant can exchange heat with each other in a heat exchanger. In one heat pump air conditioning system, in a first heat exchanger, a high-temperature coolant can exchange heat with a low-temperature refrigerant, and in a second heat exchanger, a low-temperature coolant can exchange heat with a high-temperature coolant.

[0003] In this type of heat pump air conditioning system, the two heat exchangers are set up separately, requiring at least two installation structures and spaces for installing these two heat exchangers. In addition, there are three-way valves or multiple solenoid valves connected to the first and second heat exchangers through pipelines. The coolant is controlled according to its temperature to either flow to the first heat exchanger to release heat and cool down or to the second heat exchanger to absorb heat and heat up, making the installation relatively complicated. Summary of the Invention

[0004] This invention provides a heat exchange device that allows the incoming coolant to flow into a first heat exchange core or a second heat exchange core for heat exchange based on the temperature of the incoming coolant. This heat exchange device includes a first heat exchange core and a second heat exchange core. The first heat exchange core has a first fluid channel and a second fluid channel that are isolated from each other. The first fluid channel of the first heat exchange core includes a first aperture and a second aperture. The second heat exchange core also has a first fluid channel and a second fluid channel that are isolated from each other. The first fluid channel of the second heat exchange core includes a first aperture and a second aperture. The second aperture of the first heat exchange core communicates with the second aperture of the second heat exchange core. A first plate is disposed between the first heat exchange core and the second heat exchange core.

[0005] The heat exchange device further includes a temperature control component, which is sealed and fixed to the end plate of the first heat exchange core. The temperature control component includes a valve core assembly, which has a first channel, a first valve port, a second valve port, a second channel, and a third channel. The first valve port can be opened or closed by the valve core assembly, and the second valve port can be opened or closed by the valve core assembly. When the first valve port is closed, the second valve port is open; when the second valve port is closed, the first valve port is open.

[0006] The heat exchange device also has a first connecting pipe, a portion of which is located within the first channel of the first heat exchange core. One end of the first connecting pipe is sealed and fixed to the temperature control component, and the other end of the first connecting pipe passes through the first plate and is sealed and fixed to the first plate. The first connecting pipe connects the second channel to the first channel of the second heat exchange core. When the first valve port is closed, the second valve port and the second channel connect the first channel and the first channel of the second heat exchange core. When the second valve port is closed, the first valve port and the third channel connect the first channel and the first channel of the first heat exchange core.

[0007] This heat exchange device includes a first connecting pipe, a temperature control component, a first heat exchange core, and a second heat exchange core. The temperature control component is sealed and fixed to the end plate of the first heat exchange core. A portion of the first connecting pipe is located within the first channel of the first heat exchange core. One end of the first connecting pipe is sealed and fixed to the temperature control component, and the other end of the first connecting pipe passes through the first plate and is sealed and fixed to the first plate. The first connecting pipe connects the second channel to the first channel of the second heat exchange core. When the first valve port is closed, the second valve port and the second channel connect the first channel and the first channel of the second heat exchange core. When the second valve port is closed, the first valve port and the third channel connect the first channel and the first channel of the first heat exchange core. This allows the coolant to flow into the first heat exchange core for heat exchange or into the second heat exchange core for heat exchange based on the temperature of the flowing coolant. Moreover, it has a compact structure and occupies little space. Attached Figure Description

[0008] Figure 1 This is a partial exploded schematic diagram of an embodiment of the heat exchange device of the present invention.

[0009] Figure 2 yes Figure 1 A schematic diagram of fluid flow in the heat exchange device shown.

[0010] Figure 3 yes Figure 1 The heat exchange device shown is illustrated by a cross-sectional schematic diagram showing the flow paths of the first and third fluids.

[0011] Figure 4 yes Figure 1 The heat exchange device shown is illustrated by a cross-sectional schematic diagram showing the flow paths of the second and fourth fluids.

[0012] Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the flow path of the first fluid during heat exchange between the first fluid and the second fluid in the heat exchange device shown.

[0013] Figure 6 Yes, yes Figure 1The diagram shows a cross-sectional view of the flow path of the second fluid during heat exchange between the first and second fluids in the heat exchange device.

[0014] Figure 7 yes Figure 1 The diagram shows a cross-sectional view of the flow path of the first fluid during heat exchange between the first fluid and the fourth fluid in the heat exchange device shown.

[0015] Figure 8 yes Figure 1 The diagram shows a cross-sectional view of the flow path of the fourth fluid during heat exchange between the first and fourth fluids in the heat exchange device.

[0016] Figure 9 yes Figure 1 The diagram shows a cross-sectional view of the flow path of the third fluid during heat exchange between the third and fourth fluids in the heat exchange device shown.

[0017] Figure 10 yes Figure 1 The diagram shows a cross-sectional view of the flow path of the fourth fluid during heat exchange between the third and fourth fluids in the heat exchange device shown.

[0018] Figure 11 This is a cross-sectional schematic diagram showing the flow path of the first fluid at low temperature and the flow path of the third fluid, which is another embodiment of the heat exchange device of the present invention.

[0019] Figure 12 yes Figure 11 The heat exchange device shown is illustrated with a cross-sectional schematic diagram of the flow paths of the first fluid at high temperature and the third fluid.

[0020] Figure 13 Figure 11 The heat exchange device shown is illustrated by a cross-sectional schematic diagram showing the flow paths of the second and fourth fluids.

[0021] Figure 14 This is a cross-sectional schematic diagram showing the flow path of the first fluid at low temperature and the flow path of the third fluid, which is another embodiment of the heat exchange device of the present invention.

[0022] Figure 15 yes Figure 14 The heat exchange device shown is illustrated with a cross-sectional schematic diagram of the flow paths of the first fluid at high temperature and the third fluid. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] like Figure 1As shown, in this embodiment, the heat exchange device includes a first heat exchange core 10, a second heat exchange core 20, and a third heat exchange core 30. A first plate 40 is disposed between the first heat exchange core 10 and the second heat exchange core 20, and a second plate 50 is disposed between the second heat exchange core 20 and the third heat exchange core 30. The first heat exchange core 10, the second heat exchange core 20, the third heat exchange core 30, the first plate 40, and the second plate 50 are fixed by welding or pressing.

[0025] The first heat exchange core 10 includes several stacked plates. The first plate 40 and the first heat exchange core 10 can be fixed by welding. The first heat exchange core 10 forms a first fluid channel and a second fluid channel that are isolated from each other (not shown in the figure; only the path of fluid flow is shown in the figure).

[0026] like Figures 1 to 4 As shown, in the first heat exchange core 10, the first fluid channel includes a first channel 13, several first inter-plate channels, and a second channel 14. The second fluid channel includes a third channel 11, several second inter-plate channels, and a fourth channel 12. For the inter-plate channels, adjacent plates are stacked to form either a first or second inter-plate channel. If one side of a plate is a first inter-plate channel, the other side is a second inter-plate channel. For ease of description, one of two adjacent plates is defined as a first plate, and the other as a second plate. For example, a first plate and one of two adjacent second plates form a first inter-plate channel, while the other second plate forms a second inter-plate channel. The first and second inter-plate channels are not connected. The fluid in the first inter-plate channel and the fluid in the second inter-plate channel can exchange heat. It should be noted that the lack of communication between the first and second inter-plate channels refers to their non-communication within the heat exchange core. However, once the heat exchange device becomes part of a thermal management system, communication may occur within the system.

[0027] Similarly, the second heat exchange core 20 includes several stacked plates. The first plate 40 and the second heat exchange core 20 can be fixed by welding. The second plate 50 and the second heat exchange core 20 can be fixed by welding. The second heat exchange core 20 forms a first fluid channel and a second fluid channel that are isolated from each other (not shown in the figure; only the path of fluid flow is shown in the figure).

[0028] like Figures 1 to 4As shown, in the second heat exchange core 20, the first fluid channel of the second heat exchange core 20 includes a first channel 23, several first inter-plate channels, and a second channel 24. The second fluid channel of the second heat exchange core 20 includes a third channel 21, several second inter-plate channels, and a fourth channel 22. For the inter-plate channels, adjacent plates are stacked to form either a first inter-plate channel or a second inter-plate channel. If one side of a plate is a first inter-plate channel, the other side is a second inter-plate channel. For ease of description, one of two adjacent plates is defined as a first plate, and the other as a second plate. For example, a first plate and one of two adjacent second plates form a first inter-plate channel, and with the other second plate, they form a second inter-plate channel. The first and second inter-plate channels are not connected. The fluid in the first inter-plate channel and the fluid in the second inter-plate channel can exchange heat. It should be noted that the lack of communication between the first and second inter-plate channels refers to their non-communication within the heat exchange core. However, once the heat exchange device becomes part of a thermal management system, communication may exist within the system.

[0029] Similarly, the third heat exchange core 30 includes several stacked plates. The second plate 50 and the third heat exchange core 30 can be fixed by welding. The third heat exchange core 30 forms a first fluid channel and a second fluid channel that are isolated from each other (not shown in the figure, only the path of fluid flow is shown in the figure).

[0030] like Figures 1 to 4 As shown, in the third heat exchange core 30, the first fluid channel of the third heat exchange core 30 includes a first channel 33, several first inter-plate channels, and a second channel 34. The second fluid channel of the third heat exchange core 30 includes a third channel 31, several second inter-plate channels, and a fourth channel 32. For the inter-plate channels, adjacent plates are stacked to form either a first inter-plate channel or a second inter-plate channel. If one side of a plate is a first inter-plate channel, the other side is a second inter-plate channel. For ease of description, one of two adjacent plates is defined as a first plate, and the other as a second plate. For example, a first plate and one of two adjacent second plates form a first inter-plate channel, and with the other second plate, they form a second inter-plate channel. The first and second inter-plate channels are not connected. The fluid in the first inter-plate channel and the fluid in the second inter-plate channel can exchange heat. It should be noted that the lack of communication between the first and second inter-plate channels refers to their non-communication within the heat exchange core. However, once the heat exchange device becomes part of a thermal management system, communication may occur within the system.

[0031] like Figures 1 to 4As shown, the first plate 40 has a first blocking portion 41, a second blocking portion 42, a first through hole 43, and a second through hole 44. The first blocking portion 41 is located between the third channel 11 of the first heat exchange core 10 and the third channel 21 of the second heat exchange core 20, and blocks the end of the third channel 11 of the first heat exchange core 10 opposite to the first blocking portion 41, and also blocks the end of the third channel 21 of the second heat exchange core 20 opposite to the first blocking portion 41. The third channel 11 of the first heat exchange core 10 and the third channel 21 of the second heat exchange core 20 are not connected.

[0032] The second blocking part 42 is located between the fourth channel 12 of the first heat exchange core 10 and the fourth channel 22 of the second heat exchange core 20. The second blocking part 42 blocks the end of the fourth channel 12 of the first heat exchange core 10 that is opposite to the second blocking part 42, and the second blocking part 42 blocks the end of the fourth channel 22 of the second heat exchange core 20 that is opposite to the second blocking part 42. The fourth channel 12 of the first heat exchange core 10 and the fourth channel 22 of the second heat exchange core 20 are not connected.

[0033] The first through hole 43 is at least partially opposite and connected to the first channel 13 of the first heat exchange core 10, and at least partially opposite and connected to the first channel 23 of the second heat exchange core 20. The first through hole 43 connects the first channel 13 of the first heat exchange core 10 and the first channel 23 of the second heat exchange core 20. The second through hole 44 is at least partially opposite and connected to the second channel 14 of the first heat exchange core 10, and at least partially opposite and connected to the second channel 24 of the second heat exchange core 20. The second through hole 44 connects the second channel 14 of the first heat exchange core 10 and the second channel 24 of the second heat exchange core 20.

[0034] like Figures 1 to 4 As shown, the second plate 50 has a first blocking part 51, a second blocking part 52, a first through hole 53, and a second through hole 54. The first blocking part 51 is located between the first channel 23 of the second heat exchange core 20 and the first channel 33 of the third heat exchange core 30. The first blocking part 51 blocks the end of the first channel 23 of the second heat exchange core 20 opposite to the first blocking part 51, and the first blocking part 51 blocks the end of the first channel 33 of the third heat exchange core 30 opposite to the first blocking part 51. The first channel 23 of the second heat exchange core 20 and the first channel 33 of the third heat exchange core 30 are not connected.

[0035] The second blocking part 52 is located between the second channel 24 of the second heat exchange core 20 and the second channel 34 of the third heat exchange core 30. The second blocking part 52 blocks the end of the second channel 24 of the second heat exchange core 20 opposite to the second blocking part 52, and the second blocking part 52 blocks the end of the second channel 34 of the third heat exchange core 30 opposite to the second blocking part 52. The second channel 24 of the second heat exchange core 20 and the second channel 34 of the third heat exchange core 30 are not connected.

[0036] The first through hole 53 is at least partially opposite and connected to the third channel 21 of the second heat exchange core 20, and at least partially opposite and connected to the third channel 31 of the third heat exchange core 30. The first through hole 53 connects the third channel 21 of the second heat exchange core 20 and the third channel 31 of the third heat exchange core 30. The second through hole 54 is at least partially opposite and connected to the fourth channel 22 of the second heat exchange core 20, and at least partially opposite and connected to the fourth channel 32 of the third heat exchange core 30. The second through hole 54 connects the fourth channel 22 of the second heat exchange core 20 and the fourth channel 32 of the third heat exchange core 30.

[0037] In this embodiment, the first fluid channel of the first heat exchange core 10 can be a coolant channel, and the second fluid channel can be a refrigerant channel. The high-temperature coolant 61 can flow into the first fluid channel, and the low-temperature refrigerant 62 can flow into the second fluid channel. The high-temperature coolant 61 and the low-temperature refrigerant 62 can exchange heat in the first heat exchange core 10.

[0038] The first fluid channel of the second heat exchange core 20 can be a first coolant flow channel, and the second fluid channel can be a second coolant flow channel. Low-temperature coolant 61 can flow into the first fluid channel, and high-temperature coolant 64 can flow into the second fluid channel. Low-temperature coolant 61 and high-temperature coolant 64 can exchange heat in the second heat exchange core 20.

[0039] The first fluid channel of the third heat exchange core 30 can be a refrigerant channel, and the second fluid channel can be a coolant channel. High-temperature refrigerant 63 can flow into the first fluid channel, and low-temperature coolant 64 can flow into the second fluid channel. High-temperature refrigerant 63 and low-temperature coolant 64 can exchange heat in the second heat exchange core 20.

[0040] The following example illustrates one heat exchange method of fluid in a heat exchange device, where the fluid's flow power comes from other components in the system. For example, the refrigerant's flow power can be a compressor, and the coolant's flow power can be a pump.

[0041] Figure 5 and Figure 6It is shown that the first fluid 61 and the second fluid 62 can exchange heat in the first heat exchange core 10. At this time, the third fluid 63 and the fourth fluid 64 are set to not flow. The heat exchange of the first fluid 61 and the fourth fluid 64 in the second heat exchange core 20 is very small and can be ignored. The heat exchange of the third fluid 63 and the fourth fluid 64 in the third heat exchange core 30 is very small and can be ignored.

[0042] Figure 7 and Figure 8 It is shown that the first fluid 61 and the fourth fluid 64 can exchange heat in the second heat exchange core 10. At this time, the second fluid 62 and the third fluid 63 are set to not flow. The heat exchange of the first fluid 61 and the second fluid 62 in the first heat exchange core 10 is very small and can be ignored. The heat exchange of the third fluid 63 and the fourth fluid 64 in the third heat exchange core 30 is very small and can be ignored.

[0043] Figure 9 and Figure 10 It is shown that the first fluid 61 and the fourth fluid 64 can exchange heat in the second heat exchange core 10. At this time, the second fluid 62 and the third fluid 63 are set to not flow. The heat exchange of the first fluid 61 and the second fluid 62 in the first heat exchange core 10 is very small and can be ignored. The heat exchange of the third fluid 63 and the fourth fluid 64 in the third heat exchange core 30 is very small and can be ignored.

[0044] like Figures 11 to 13 Another embodiment of the heat exchange device is shown. In this embodiment, unlike the previous embodiment, a temperature control component is also provided to control the flow direction of the incoming first fluid 61. As shown in the figure, the temperature control component includes a first valve body 71, a second valve body 72, and a valve core assembly. In this embodiment, the first valve body 71 and the second valve body 72 are fixed by a retaining ring 723. The valve core assembly includes a valve core 73 and a thermal actuator 74. The valve core 73 and the thermal actuator 74 are located within the temperature control component, and the valve core 73 and the thermal actuator 74 are fixed or integrally formed.

[0045] The first valve body 71 has a first channel 711 and a first valve port 712, and the second valve body 72 has a second valve port 721 and a second channel 722. The first valve port 712 penetrates the side wall of the first valve body 71, and the first channel 711 penetrates one end wall of the first valve body 71. The first channel 711 can serve as an external channel. The valve core 73 also has a third channel 731 penetrating the valve core 73. The first valve port 712 can be opened or closed by the valve core assembly, and the second valve port 721 can also be opened or closed by the valve core assembly. When the first valve port 712 is closed, the second valve port 721 is open; when the second valve port 721 is closed, the first valve port 712 is open. In this embodiment, the first valve port 712 can be opened or closed by the valve core 73, and the second valve port 721 can be opened or closed by the thermal element 74. When the second valve port 721 is open, the third channel 731 can connect the first channel 711 and the second channel 722. As shown in the figure, most of the temperature control component extends into the first channel 13 of the first heat exchange core 10, and one end of the first valve body 71 is sealed and fixed to the end plate (not shown in the figure) of the first heat exchange core 10, and the other end of the first valve body 71 is sealed and fixed to the first plate 40. The second channel 722 can communicate with the first channel 23 of the second heat exchange core 23. It should be noted that it is also possible to replace it with the second valve body 72 being fixed to the first heat exchange core 10 and the first plate 40, or both the first valve body 71 and the second valve body 72 being fixed to the first heat exchange core 10 and the first plate 40, or the first valve body 71 being fixed to the first heat exchange core 10 or the first plate 40, and the second valve body 72 being fixed to the first plate 40 or the first heat exchange core 10.

[0046] There is a certain distance between the outer wall of the portion of the first valve body 10 that extends into the first channel 13 and the corresponding wall portion of the first channel 13. A fourth channel 131 is formed between the outer wall of the portion of the first valve body 10 that extends into the first channel 13 and the corresponding wall portion of the first channel 13. When the first valve port 712 is opened, the first valve port 712 can connect the first channel 711 and the fourth channel 131. It should be noted here that the wall portion corresponding to the first channel 13 is not a continuous entity, but a virtual wall portion only for the purpose of illustrating the relationship between the first valve body 10 and the first channel 13.

[0047] The flow of fluid in a heat exchanger is described below. For example... Figure 11As shown, when the temperature of the first fluid 61 is low, the second valve port 721 is in the open state and the first valve port 712 is in the closed state. At this time, the low-temperature first fluid 61 flows into the heat exchange device from the first channel 711, and flows into the first fluid channel of the second heat exchange core 20 after passing through the third channel 731, the second valve port 721, and the second channel 722. After passing through the first hole 23, several first inter-plate channels, and the second hole 24 of the second heat exchange core 20, it flows into the second hole 14 of the first heat exchange core 10 and then flows out of the heat exchange device.

[0048] like Figure 12 As shown, when the temperature of the first fluid 61 is high, the second valve port 721 is closed and the first valve port 712 is open. At this time, the high-temperature first fluid 61 flows into the heat exchange device from the first channel 711, flows into the first fluid channel of the first heat exchange core 10 after passing through the first valve port 712 and the fourth channel 131, and flows out of the heat exchange device after passing through the second channel 14 of the first heat exchange core 10.

[0049] like Figure 13 As shown, unlike the above embodiments, in this embodiment, the second through hole 54 of the second plate 50 in the above embodiments is replaced by a third blocking part 54'. In this embodiment, a first submersible tube 35 is also provided. One end of the first submersible tube 35 is sealed and fixed to the end plate (not shown in the figure) of the third heat exchange core 30, and the other end of the first submersible tube 35 passes through the second plate 50 and is sealed and fixed to the second plate 50. The channel in the first submersible tube 35 is connected to the fourth channel 22 of the second heat exchange core. In this way, after the low temperature fourth fluid 64 flows into the fourth channel 32 of the third heat exchange core 30, it absorbs heat and heats up in the second fluid channel of the third heat exchange core 30. Then it flows into the third channel 21 of the second heat exchange core 20 and exchanges heat with the low temperature first fluid 61 in the second heat exchange core. The fourth fluid 64 cools down and the first fluid 61 heats up.

[0050] It should be noted that in this embodiment, the first submersible tube 35 can be omitted, as in the aforementioned implementation. Including the first submersible tube 35 can broaden the application scenarios of the heat exchange device.

[0051] The other parts of this embodiment are the same as or similar to the aforementioned implementation methods, and will not be described in detail here.

[0052] like Figures 14 to 15 A heat exchange device is shown in yet another embodiment, which differs from the one described in this embodiment. Figures 11 to 13In the illustrated embodiment, the temperature control component is located outside the first heat exchange core 10. As shown, the temperature control component includes a first valve body 81, a second valve body 82, and a valve core assembly. In this embodiment, the first valve body 81 and the second valve body 82 can be fixed by welding, threaded connection, or other methods. The valve core assembly includes a thermal actuator 83, which is located inside the temperature control component. The thermal actuator 83 can be fixed by an end cap 84.

[0053] The first valve body 81 has a first channel 811, a first valve port 815, a second valve port 812, a second channel 813 and a third channel 814. The second valve body 82 has a fourth channel 821, a fifth channel 823 and a groove 822. The first channel 811 can be used as an external channel. The second channel 813 is connected to the fourth channel 821. The third channel 814 is connected to the groove 822. The groove 822 is connected to the fifth channel 823.

[0054] As shown in the figure, the second valve body 82 of the temperature control component is sealed and fixed to the end plate (not shown) of the first heat exchange core 10. The heat exchange device also has a first connecting pipe 15. One end of the first connecting pipe 15 is sealed and fixed to the second valve body 82, and the other end of the first connecting pipe 15 passes through the first channel 13 of the first heat exchange core 10 and then through the third blocking part 45 of the first plate 40. The first connecting pipe 15 is sealed and fixed to the third blocking part of the first plate 40. The first connecting pipe 15 can connect the fourth channel 821 to the first channel 23 of the second heat exchange core 23.

[0055] The fifth channel 823 is connected to the first hole 13 of the first heat exchange core 10, and the third channel 814 can be connected to the first hole 13 of the first heat exchange core 10 through the groove 822 and the fifth channel 823.

[0056] Other structures and working principles of this embodiment are similar to Figures 11 to 13 The embodiments shown are the same or similar, and will not be described in detail here.

[0057] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention based on the above-disclosed technical content, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall still fall within the protection scope of the technical solutions of the present invention.

Claims

1. A heat exchange device, comprising a first heat exchange core and a second heat exchange core, the first heat exchange core having a first fluid channel and a second fluid channel that are isolated from each other, the first fluid channel of the first heat exchange core including a first channel and a second channel, the second heat exchange core having a first fluid channel and a second fluid channel that are isolated from each other, the first fluid channel of the second heat exchange core including a first channel and a second channel, the second channel of the first heat exchange core communicating with the second channel of the second heat exchange core, and a first plate being disposed between the first heat exchange core and the second heat exchange core; The heat exchange device further includes a temperature control component, which is sealed and fixed to the end plate of the first heat exchange core. The temperature control component includes a valve core assembly, which has a first channel, a first valve port, a second valve port, a second channel, and a third channel. The first valve port can be opened or closed by the valve core assembly, and the second valve port can also be opened or closed by the valve core assembly. When the first valve port is closed, the second valve port is open; when the second valve port is closed, the first valve port is open. The heat exchange device also has a first connecting pipe, a portion of which is located within the first channel of the first heat exchange core. One end of the first connecting pipe is sealed and fixed to the temperature control component, and the other end of the first connecting pipe passes through the first plate and is sealed and fixed to the first plate. The first connecting pipe connects the second channel to the first channel of the second heat exchange core. When the first valve port is closed, the second valve port and the second channel connect the first channel and the first channel of the second heat exchange core. When the second valve port is closed, the first valve port and the third channel connect the first channel and the first channel of the first heat exchange core.

2. The heat exchange device according to claim 1, characterized in that, The temperature control component further includes a first valve body and a second valve body, which are fixed together. The first valve body has a first channel, a first valve port, a second valve port, a second channel, and a third channel. The second valve body has a fourth channel, a fifth channel, and a groove. The second channel communicates with the fourth channel, the third channel communicates with the groove, the groove communicates with the fifth channel, and the fifth channel communicates with the first hole of the first heat exchange core.

3. The heat exchange device according to claim 2, characterized in that, The second valve body is sealed and fixed to the end plate of the first heat exchange core, one end of the first connecting pipe is sealed and fixed to the second valve body, and the first connecting pipe is connected to the fourth channel and the first channel of the second heat exchange core.

4. The heat exchange device according to any one of claims 1-3, characterized in that, The heat exchange device further includes a third heat exchange core, which forms a first fluid channel and a second fluid channel that are isolated from each other. The first fluid channel of the third heat exchange core includes a first channel and a second channel, and the second fluid channel of the first heat exchange core includes a third channel and a fourth channel. The third channel of the first heat exchange core is not connected to the third channel of the second heat exchange core, and the fourth channel of the first heat exchange core is not connected to the fourth channel of the second heat exchange core. The first channel of the second heat exchange core is not connected to the first channel of the third heat exchange core, and the second channel of the second heat exchange core is not connected to the second channel of the third heat exchange core. The third channel of the second heat exchange core is connected to the third channel of the third heat exchange core, and the fourth channel of the second heat exchange core is not connected to the fourth channel of the third heat exchange core.

5. The heat exchange device according to claim 4, characterized in that, The first plate has a first blocking part and a second blocking part. The first blocking part is located between the third channel of the first heat exchange core and the third channel of the second heat exchange core. The first blocking part blocks the end of the third channel of the first heat exchange core that is opposite to the first blocking part, and the first blocking part blocks the end of the third channel of the second heat exchange core that is opposite to the first blocking part. The second blocking part is located between the fourth channel of the first heat exchange core and the fourth channel of the second heat exchange core. The second blocking part blocks the end of the fourth channel of the first heat exchange core that is opposite to the second blocking part, and the second blocking part blocks the end of the fourth channel of the second heat exchange core that is opposite to the second blocking part.

6. The heat exchange device according to claim 5, characterized in that, The first plate has a first through hole and a second through hole. The first through hole is at least partially opposite to and communicates with the first channel of the second heat exchange core. The first through hole is at least partially opposite to and communicates with the second channel. The first through hole communicates with the second channel and the first channel of the second heat exchange core. The second through hole is at least partially opposite to and connected to the second channel of the first heat exchange core, and the second through hole is at least partially opposite to and connected to the second channel of the second heat exchange core. The second through hole connects the second channel of the first heat exchange core and the second channel of the second heat exchange core.

7. The heat exchange device according to claim 4, characterized in that, A second plate is provided between the second heat exchange core and the third heat exchange core. The second plate has a first blocking part, a second blocking part and a third blocking part. The first blocking part is located between the first channel of the second heat exchange core and the first channel of the third heat exchange core. The first blocking part blocks the end of the first channel of the second heat exchange core opposite to the first blocking part, and the first blocking part blocks the end of the first channel of the third heat exchange core opposite to the first blocking part. The second blocking part is located between the second channel of the second heat exchange core and the second channel of the third heat exchange core. The second blocking part blocks the end of the second channel of the second heat exchange core that is opposite to the second blocking part, and the second blocking part blocks the end of the second channel of the third heat exchange core that is opposite to the second blocking part. The third blocking part is located between the fourth channel of the second heat exchange core and the fourth channel of the third heat exchange core. The third blocking part blocks the end of the fourth channel of the second heat exchange core opposite to the third blocking part, and the third blocking part blocks the end of the fourth channel of the third heat exchange core opposite to the third blocking part.

8. The heat exchange device according to claim 7, characterized in that, It also has a first submersible tube, one end of which is sealed and fixed to the end plate of the third heat exchange core, and the other end of which passes through the third blocking part and is sealed and fixed to the second plate. The channel in the first submersible tube is connected to the fourth channel of the second heat exchange core.

9. The heat exchange device according to claim 8, characterized in that, The first fluid channel of the first heat exchange core, the first fluid channel of the second heat exchange core, the second fluid channel of the second heat exchange core, and the second fluid channel of the third heat exchange core are coolant channels, and the second fluid channel of the first heat exchange core and the first fluid channel of the third heat exchange core are refrigerant channels.

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