An integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly

Abstract

The present invention provides an integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly, which solves the technical problems that the existing heater and chiller are two relatively independent assemblies, which are connected by pipelines, occupy a large space, and are difficult to arrange and connect the pipelines. The core is provided with a heating unit, a refrigerant flow channel unit and a coolant flow channel unit. Refrigerant flows in the refrigerant flow channel unit, and coolant flows in the coolant flow channel unit. The number of the refrigerant flow channel unit, the coolant flow channel unit and the heating unit is one or more, and the refrigerant flow channel unit, the coolant flow channel unit and the heating unit are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit and the heating unit are not adjacent to each other. The core can be widely used in heating, cooling and heat exchange devices of electric vehicles or new energy vehicles.

Description

Technical Field

[0001] The present application relates to a heating, cooling and heat exchange device for an electric vehicle or a new energy vehicle, and in particular to an integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly. Background Art

[0002] In the field of new energy vehicles (especially electric vehicles), the passenger cabin and the drive battery have heating requirements when the ambient temperature is low, and cooling requirements when the internal temperature is high. Both heating requirements will be met by PTC heating (or other forms of heaters), while the cooling requirements are met differently. The passenger cabin uses air conditioning to cool the air to achieve a cooling effect, while the power battery uses refrigerant to cool the coolant through a chiller (i.e., a cooler), and then exchanges heat with the coolant and the power battery to achieve the cooling purpose. Currently, all heaters and chillers on the market are two relatively independent assemblies, which are connected by pipes according to the thermal management system architecture. This method occupies a large space and is difficult to arrange and connect pipes. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned technology and to provide an integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly, in which the heater and the chiller (or other forms of plate heat exchangers) are integrated through a heat exchange plate structure, thereby reducing the layout space, saving connecting pipes, and occupying a small space, so as to achieve the purpose of having both heating and cooling heat exchange functions in one assembly.

[0004] To this end, the present invention provides an integrated core for liquid heating, cooling and heat exchange, which is provided with a liquid flow channel unit and a PTC heating unit, the liquid flow channel unit is provided with a refrigerant flow channel unit and a coolant flow channel unit, the refrigerant flow channel unit is used to circulate the refrigerant, and the coolant flow channel unit is used to circulate the coolant; the number of the refrigerant flow channel unit, the coolant flow channel unit and the PTC heating unit is one or more respectively, the refrigerant flow channel unit, the coolant flow channel unit and the PTC heating unit are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit and the PTC heating unit are not adjacent to each other.

[0005] Preferably, the coolant flow channel unit includes a first coolant flow channel unit and a second coolant flow channel unit, and the PTC heating unit is wrapped and arranged between the first coolant flow channel unit and the second coolant flow channel unit. The first coolant flow channel unit, the PTC heating unit and the second coolant flow channel unit are stacked and connected in sequence from top to bottom to form a group of liquid heating core units; the number of liquid heating core units is one or more groups, and the liquid heating core units and the refrigerant flow channel units are used as a basic heat exchange unit and are stacked and connected in sequence from top to bottom alternately.

[0006] Preferably, the first coolant flow channel unit is provided with a first shell and a second shell, the first shell and the second shell are stacked from top to bottom, and the two are connected to form a first sealed liquid flow channel, the first shell is respectively provided with a first coolant inlet and a first coolant outlet, and the first sealed liquid flow channel guides the coolant from the first coolant inlet to the first coolant outlet; the second shell is respectively provided with a second coolant inlet and a second coolant outlet connected to the first sealed liquid flow channel;

[0007] The second coolant flow channel unit is provided with a third shell and a fourth shell, the third shell and the fourth shell are stacked from top to bottom, and the two are connected to form a second sealed liquid flow channel, the third shell is respectively provided with a third coolant inlet and a third coolant outlet, and the second sealed liquid flow channel guides the coolant from the third coolant inlet to the third coolant outlet; the second coolant inlet is connected to the third coolant inlet, and the third coolant outlet is connected to the second coolant outlet;

[0008] The second shell and the third shell are stacked from top to bottom and connected to form a heating chamber, and the PTC heating unit is installed in the heating chamber;

[0009] The refrigerant flow channel unit is provided with a fourth shell and a fifth shell. The fourth shell and the fifth shell are stacked from top to bottom and are connected to form a third sealed liquid flow channel. The third sealed liquid flow channel is provided with a fourth refrigerant inlet and a fourth refrigerant outlet. The third sealed liquid flow channel leads the refrigerant from the fourth refrigerant inlet to the fourth refrigerant outlet; the third sealed liquid flow channel is isolated from the first sealed liquid flow channel and the second sealed liquid flow channel, respectively.

[0010] Preferably, the present invention is further provided with a refrigerant liquid inlet connecting pipe and a refrigerant liquid outlet connecting pipe; the fourth shell is also respectively provided with a fourth refrigerant inlet and a fourth refrigerant outlet, one end of the refrigerant liquid inlet connecting pipe is connected with the fourth refrigerant inlet, and the other end of the refrigerant liquid inlet connecting pipe passes through the third shell, the second shell, and the first shell in sequence upward, one end of the refrigerant liquid outlet connecting pipe is connected with the fourth refrigerant outlet, and the other end of the refrigerant liquid outlet connecting pipe passes through the third shell, the second shell, and the first shell in sequence upward; the first cooling liquid inlet, the second cooling liquid inlet, the third cooling liquid inlet, the first sealed liquid flow channel, the second sealed liquid flow channel, and the third cooling liquid outlet, the second cooling liquid outlet, and the first cooling liquid outlet form a first flow channel; the fourth refrigerant inlet, the refrigerant liquid inlet connecting pipe, the third sealed liquid flow channel, the fourth refrigerant outlet, and the refrigerant liquid outlet connecting pipe form a second flow channel, and the first flow channel and the second flow channel are isolated.

[0011] Preferably, the number of basic heat exchange units is set to be multiple, and two adjacent basic heat exchange units are connected in parallel stacking; the other end of the refrigerant liquid inlet connecting pipe and the other end of the refrigerant liquid outlet connecting pipe of the basic heat exchange unit located at the bottom are respectively connected to the third sealed liquid flow channel of the basic heat exchange unit located at the top; the first coolant inlet and the first coolant outlet of the basic heat exchange unit located at the bottom are respectively connected to the second sealed liquid flow channel of the basic heat exchange unit located at the top.

[0012] Preferably, the first shell, the second shell, the third shell, and the fourth shell are all cover-like structures with an open lower end, and all have edges extending downward and outward; the edge of the first shell is sealed and connected with the edge of the second shell to form a first sealed liquid flow channel, the edge of the second shell is sealed and connected with the edge of the third shell to form a heating chamber, the edge of the third shell is sealed and connected with the edge of the fourth shell to form a second sealed liquid flow channel, and the edge of the fourth shell is sealed and connected with the edge of the fifth shell to form a third sealed liquid flow channel;

[0013] The edges of the second coolant inlet and the second coolant outlet are both concave downwards, the edges of the third coolant inlet and the third coolant outlet are both convex upwards, the edge of the second coolant inlet is sealedly connected to the edge of the third coolant inlet, and the edge of the second coolant outlet is sealedly connected to the edge of the third coolant outlet;

[0014] In two upper and lower adjacent basic heat exchange units, the fourth shell of the upper basic heat exchange unit is provided with a fourth coolant inlet and a fourth coolant outlet, and the fifth shell is provided with a fifth coolant inlet and a fifth coolant outlet; the edges of the fourth coolant inlet and the fourth coolant outlet are both concave downward, the edges of the fifth coolant inlet and the fifth coolant outlet are both convex upward, the edge of the fourth coolant inlet is sealed and connected to the edge of the fifth coolant inlet, and the edge of the fourth coolant outlet is sealed and connected to the edge of the fifth coolant outlet;

[0015] The first shell is also provided with a first refrigerant inlet and a first refrigerant outlet, the second shell is also provided with a second refrigerant inlet and a second refrigerant outlet, and the third shell is also provided with a third refrigerant inlet and a third refrigerant outlet; the edges of the second refrigerant inlet and the second refrigerant outlet are both recessed downward, and the edges of the third refrigerant inlet, the third refrigerant outlet, the fourth refrigerant inlet and the fourth refrigerant outlet are both convex upward, the edges of the second refrigerant inlet, the third refrigerant inlet and the fourth refrigerant inlet are sealedly connected, and the edges of the second refrigerant outlet, the third refrigerant outlet and the fourth refrigerant outlet are sealedly connected; one end of the refrigerant liquid inlet connecting pipe is sealedly connected to the edge of the second refrigerant inlet, and the other end of the refrigerant liquid inlet connecting pipe is sealedly connected to the edge of the first refrigerant inlet; one end of the refrigerant liquid outlet connecting pipe is sealedly connected to the edge of the second refrigerant outlet, and the other end of the refrigerant liquid outlet connecting pipe is sealedly connected to the edge of the first refrigerant outlet.

[0016] Preferably, the basic heat exchange unit located at the top layer is also respectively connected with a refrigerant inlet pipe, a refrigerant outlet pipe, a cooling liquid inlet pipe, and a cooling liquid outlet pipe; one end of the refrigerant inlet pipe is connected to the first refrigerant inlet of the first shell, and one end of the refrigerant outlet pipe is connected to the first refrigerant outlet of the first shell; one end of the cooling liquid inlet pipe is connected to the first cooling liquid inlet of the first shell, and one end of the cooling liquid outlet pipe is connected to the first cooling liquid outlet of the first shell.

[0017] Preferably, the first shell, the second shell, the third shell, the fourth shell and the fifth shell are respectively made by a stamping process.

[0018] Preferably, a stacking manner in which the refrigerant flow channel unit, the coolant flow channel unit and the PTC heating unit are stacked and connected in a certain order from top to bottom is: it is provided with a heating section and a refrigeration section, and the heating section and the refrigeration section are stacked and connected in a certain order from top to bottom, wherein the refrigeration section is arranged by refrigerant flow channel units and coolant flow channel units being stacked and connected alternately from top to bottom, and the heating section is arranged by other coolant flow channel units and PTC heating units being stacked and connected alternately from top to bottom.

[0019] A liquid heating, cooling and heat exchange assembly comprises a box-shaped shell and an integrated core for liquid heating, cooling and heat exchange as described in any one of the above items arranged in the box-shaped shell.

[0020] The beneficial effects of the present invention are as follows: the present invention provides an integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly, wherein the refrigerant flow channel unit, the coolant flow channel unit and the PTC heating unit are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit and the PTC heating unit are not adjacent to each other; the PTC heating unit provides heat to its adjacent coolant flow channel unit, and the refrigerant flow channel unit absorbs or releases heat from its adjacent coolant flow channel unit, thereby reducing the existing layout space, saving the number of connecting pipelines, occupying a small space, and achieving the purpose of having both heating and cooling functions in one assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of a three-dimensional diagram of an integrated core for liquid heating, cooling and heat exchange in one form of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a three-dimensional diagram of a liquid heating and cooling heat exchange assembly of the present invention;

[0024] Figure 3 for Figure 1 The structural schematic diagram of the exploded view shown;

[0025] Figure 4 for Figure 1 A structural schematic diagram of a three-dimensional view of a cross-sectional view from a viewing angle shown (cut downward from the coolant inlet pipe and the coolant outlet pipe);

[0026] Figure 5 for Figure 1 A structural schematic diagram of a stereoscopic view of a cross-sectional view from another viewing angle (cut downward from the refrigerant liquid inlet pipe and the refrigerant liquid outlet pipe);

[0027] Figure 6 for Figure 2 The structural diagram of the exploded view is shown.

[0028] Figure numerals: 1. first shell; 2. second shell; 3. third shell; 4. fourth shell; 5. fifth shell; 6. coolant inlet pipe; 7. coolant outlet pipe; 8. refrigerant inlet pipe; 9. refrigerant outlet pipe; 10. PTC heating unit; 11. refrigerant flow channel unit; 12. first sealed liquid flow channel; 13. first coolant flow channel unit; 14. second coolant flow channel unit; 15. box-shaped shell; 16. first coolant inlet; 17. first coolant outlet; 18. first refrigerant inlet; 19. first refrigerant outlet; 20. basic heat exchange unit; 21. controller; 22. IGBT transistor; 23. heating chamber; 24. circuit board; 25. high voltage connector; 26. second coolant inlet; 27. second coolant outlet; 28. first 2. Second refrigerant inlet; 29. ​​Second refrigerant outlet; 30. Low-pressure connector; 31. Upper cover; 32. Side panel; 33. Bottom plate; 34. Second sealed liquid flow channel; 35. Circuit board cover; 36. Third coolant inlet; 37. Third coolant outlet; 38. Third refrigerant inlet; 39. Third refrigerant outlet; 40. First sealing ring; 41. Second sealing ring; 42. Liquid heating core unit; 45. Third sealed liquid flow channel; 46. Fourth coolant inlet; 47. Fourth coolant outlet; 48. Fourth refrigerant inlet; 49. Fourth refrigerant outlet; 56. Fifth coolant inlet; 57. Fifth coolant outlet; 58. Fifth refrigerant inlet; 59. Fifth refrigerant outlet; 68. Refrigerant liquid inlet connecting pipe; 69. Refrigerant liquid outlet connecting pipe. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and 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. The methods used in the present invention are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercial products unless otherwise specified.

[0030] Depend on Figure 1As shown, the present invention provides an integrated core for liquid heating, cooling and heat exchange, which is provided with a liquid flow channel unit and a PTC heating unit 10, the liquid flow channel unit is provided with a refrigerant flow channel unit 11 and a coolant flow channel unit, the refrigerant flow channel unit 11 is used to circulate the refrigerant, and the coolant flow channel unit is used to circulate the coolant; the number of the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 is one or more, the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit 11 and the PTC heating unit 10 are not mutually connected. The refrigerant flow channel unit 11 and the PTC heating unit 10 are adjacent to each other to prevent the refrigerant flow channel unit 11 or the PTC heating unit 10 from affecting each other after being started; in actual use, the surface temperature of the PTC heating unit is usually around 230°C, which is far higher than the saturated volatilization temperature of the refrigerant under the same pressure. If the refrigerant flow channel unit 11 and the PTC heating unit 10 are adjacent to each other, the refrigerant will be heated in the refrigerant flow channel unit 11 and become supersaturated, and will change from liquid to gas in an instant, and will volatilize rapidly, which will have an adverse effect on the air conditioning system. To avoid accidents, the refrigerant flow channel unit 11 and the PTC heating unit 10 are not adjacent to each other, and a coolant flow channel unit is set between them. The PTC heating unit 10 provides heat to its adjacent coolant flow channel unit, and the refrigerant flow channel unit 11 can absorb heat from its adjacent coolant flow channel unit. The user can choose to turn on the PTC heating unit 10 or the refrigerant flow channel unit 11 according to the actual needs of the vehicle.

[0031] The present invention integrates the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10, thereby reducing the existing layout space, saving the number of connecting pipelines, occupying a small space, and achieving the purpose of one assembly having both heating and cooling functions. It avoids the disadvantages that all heaters and chillers currently on the market are two relatively independent assemblies, which are connected by pipelines according to the thermal management system architecture, occupying a large space and making pipeline layout and connection difficult.

[0032] The coolant flow channel unit is provided with a coolant flow channel, in which coolant flows. The coolant flow channel of the coolant flow channel unit is usually connected to an external coolant circuit. For example, the external coolant circuit is a vehicle coolant circuit. The coolant in the external coolant circuit enters the coolant flow channel to complete heating and cooling heat exchange, and then returns to the external coolant circuit. The PTC heating unit 10 is provided with a PTC heating device. The PTC heating device is provided with a PTC heating pack. The PTC heating pack is heated by electric heating to provide heat for the adjacent coolant flow channel unit, thereby increasing the temperature of the coolant circulating in the flow channel of the coolant flow channel unit. The refrigerant flow channel unit 11 is provided with a refrigerant flow channel. The refrigerant flow channel of the refrigerant flow channel unit 11 is usually connected to an external refrigeration system, such as a compressor. When refrigeration is required, the refrigerant enters the refrigerant flow channel from the external refrigeration system, enters the refrigerant flow channel to complete heat absorption, so that the refrigerant in the refrigerant flow channel absorbs heat from the adjacent coolant flow channel unit, thereby reducing the temperature of the coolant circulating in the flow channel of the coolant flow channel unit.

[0033] As a preferred embodiment, Figure 1 As shown, the coolant flow channel unit includes a first coolant flow channel unit 13 and a second coolant flow channel unit 14, and the PTC heating unit 10 is wrapped and arranged between the first coolant flow channel unit 13 and the second coolant flow channel unit 14. The first coolant flow channel unit 13, the PTC heating unit 10 and the second coolant flow channel unit 14 are stacked and connected from top to bottom to form a group of liquid heating core units 42; the number of liquid heating core units 42 is one group or more, and the liquid heating core units 42 and the refrigerant flow channel unit 11 are used as a basic heat exchange unit 20 and are alternately stacked from top to bottom. A stacked connection arrangement is a stacking arrangement in which the first coolant flow channel unit 13, the PTC heating unit 10, the second coolant flow channel unit 14, and the refrigerant flow channel unit 11 are stacked and connected in a certain order from top to bottom. This stacking arrangement enables the PTC heating unit 10 and the refrigerant flow channel unit 11 to be connected with a coolant flow channel unit on each of the upper and lower sides. When the user turns on the PTC heating unit 10 or the refrigerant flow channel unit 11, on the one hand, sufficient heat exchange for heating or cooling is achieved; on the other hand, the coolant flow channel unit is fully utilized during heating or cooling, thereby fully utilizing the space.

[0034] As a further preferred embodiment, Figure 1 , Figure 4As shown, the first coolant flow channel unit 13 is provided with a first shell 1 and a second shell 2. The first shell 1 and the second shell 2 are stacked from top to bottom and connected to form a first sealed liquid flow channel 12. The first shell 1 is respectively provided with a first coolant inlet 16 and a first coolant outlet 17. The first sealed liquid flow channel 12 guides the coolant from the first coolant inlet 16 to the first coolant outlet 17. The heat exchange process of the first coolant flow channel unit 13 is as follows: the coolant enters the first sealed liquid flow channel 12 from the first coolant inlet 16, and after absorbing or releasing heat in the first sealed liquid flow channel 12, it flows out of the first sealed liquid flow channel 12 from the first coolant outlet 17. The second shell 2 is respectively provided with a second coolant inlet 26 and a second coolant outlet 27 connected to the first sealed liquid flow channel 12.

[0035] The second coolant flow channel unit 14 is provided with a third shell 3 and a fourth shell 4. The third shell 3 and the fourth shell 4 are stacked from top to bottom and connected to form a second sealed liquid flow channel 34. The third shell 3 is respectively provided with a third coolant inlet 36 and a third coolant outlet 37. The second sealed liquid flow channel 34 guides the coolant from the third coolant inlet 36 to the third coolant outlet 37; the second coolant inlet 26 is connected to the third coolant inlet 36, and the third coolant outlet 37 is connected to the second coolant outlet 27; the heat exchange process of the second coolant flow channel unit 14 is as follows: the coolant entering the first sealed liquid flow channel 12 from the first coolant inlet 16 successively enters the second sealed liquid flow channel 34 through the second coolant inlet 26 and the third coolant inlet 36, absorbs or releases heat in the second sealed liquid flow channel 34, and then enters the first sealed liquid flow channel 12 through the third coolant outlet 37 and the second coolant outlet 27, and finally flows out of the first sealed liquid flow channel 12 from the first coolant outlet 17. Preferably, in order to facilitate the coolant flowing into the first coolant inlet 16 to smoothly enter the second coolant inlet 26 from the first sealed liquid flow channel 12, and to smoothly flow out of the first coolant outlet 17 from the second coolant outlet 27 into the first sealed liquid flow channel 12, the first coolant inlet 16 and the second coolant inlet 26, and the first coolant outlet 17 and the second coolant outlet 27 are arranged opposite to each other up and down.

[0036] The second shell 2 and the third shell 3 are stacked from top to bottom and connected to form a heating chamber 23, and the PTC heating unit 10 is installed in the heating chamber 23. When the PTC heating unit 10 is turned on and powered on, it generates heat, a part of which continuously conducts heat upward to the coolant in the first sealed liquid flow channel 12, and the other part continuously conducts heat downward to the coolant in the second sealed liquid flow channel 34.

[0037] Depend on Figure 1 , Figure 5As shown, the refrigerant flow channel unit 11 is provided with a fourth shell 4 and a fifth shell 5. The fourth shell 4 and the fifth shell 5 are stacked from top to bottom, and the two are connected to form a third sealed liquid flow channel 45. The third sealed liquid flow channel 45 is provided with a fourth refrigerant inlet 48 and a fourth refrigerant outlet 49. The third sealed liquid flow channel 45 can be directly connected to the external refrigeration system through the fourth refrigerant inlet 48 and the fourth refrigerant outlet 49 respectively. The third sealed liquid flow channel 45 guides the refrigerant from the fourth refrigerant inlet 48 to the fourth refrigerant outlet 49; the third sealed liquid flow channel 45 is isolated from the first sealed liquid flow channel 12 and the second sealed liquid flow channel 34 respectively. When the refrigerant flow channel unit 11 is turned on, the refrigerant in the third sealed liquid flow channel 45 continuously absorbs heat from its adjacent cooling liquid flow channel unit to reduce the temperature of the coolant in the cooling liquid flow channel unit.

[0038] like Figure 5 As shown, the present invention can also be provided with a refrigerant inlet connecting pipe 68 and a refrigerant outlet connecting pipe 69; the fourth refrigerant inlet 48 and the fourth refrigerant outlet 49 are provided on the fourth shell 4, one end of the refrigerant inlet connecting pipe 68 is connected to the fourth refrigerant inlet 48, one end of the refrigerant outlet connecting pipe 69 is connected to the fourth refrigerant outlet 49, and the other end of the refrigerant inlet connecting pipe 68 and the other end of the refrigerant outlet connecting pipe 69 respectively pass through the third shell 3, the second shell 2, and the first shell 1 upwards and are connected to the external refrigeration system. Figure 4 , Figure 5 As shown, the first coolant inlet 16, the second coolant inlet 26, the third coolant inlet 36, the first sealed liquid flow channel 12, the second sealed liquid flow channel 34, and the third coolant outlet 37, the second coolant outlet 27, and the first coolant outlet 17 form a first flow channel, and the coolant circulates with the outside in the first flow channel; the fourth refrigerant inlet 48, the refrigerant liquid inlet connecting pipe 68, the third sealed liquid flow channel 45, the fourth refrigerant outlet 49, and the refrigerant liquid outlet connecting pipe 69 form a second flow channel, and the refrigerant circulates with the outside in the second flow channel, and the first flow channel and the second flow channel are isolated.

[0039] like Figure 1 , Figure 5As shown, the number of basic heat exchange units 20 can be set to multiple, and the two adjacent basic heat exchange units 20 are stacked in parallel. The other end of the refrigerant liquid inlet connecting pipe 68 and the other end of the refrigerant liquid outlet connecting pipe 69 of the basic heat exchange unit 20 located at the bottom are respectively connected to the third sealed liquid flow channel 45 of the basic heat exchange unit 20 located at the top. Usually, a fifth refrigerant inlet 58 and a fifth refrigerant outlet 59 are opened in the fifth shell, and the other end of the refrigerant liquid inlet connecting pipe 68 and the other end of the refrigerant liquid outlet connecting pipe 69 of the basic heat exchange unit 20 located at the bottom are respectively connected to the third sealed liquid flow channel 45 of the basic heat exchange unit 20 located at the top through the fifth refrigerant inlet 58 and the fifth refrigerant outlet 59. As shown Figure 1 , Figure 4 As shown, the first coolant inlet 16 and the first coolant outlet 17 of the basic heat exchange unit 20 located at the bottom are respectively connected to the second sealed liquid flow channel 34 of the basic heat exchange unit 20 located at the top, and can be connected by pipelines or other methods. By increasing the number of basic heat exchange units 20, the heating and cooling heat exchange capacity is improved; two adjacent basic heat exchange units 20 are stacked in parallel, which further reduces the existing layout space, saves the number of connecting pipelines, and occupies less space.

[0040] like Figure 1 , Figure 4 , Figure 5 As shown, in the two upper and lower adjacent basic heat exchange units 20, the fifth shell 5 of the basic heat exchange unit 20 located at the upper side and the first shell 1 of the basic heat exchange unit 20 located at the lower side play the same role and can also have the same structure. Only one of them can be selected for use, which saves materials, reduces costs, and further reduces occupied space.

[0041] The number of basic heat exchange units 20 can be adjusted according to the different requirements of heating and cooling heat exchange of the whole vehicle. The basic heat exchange unit 20 located at the top or bottom layer is preferably a liquid heating core unit 42, which is convenient for sufficient heating and cooling heat exchange. The first shell 1, the second shell 2, the third shell 3, and the fourth shell 4 can all be cover-like structures with open lower ends, and all have edges extending downward and outward; the edge of the first shell 1 is sealed and connected with the edge of the second shell 2 to form a first sealed liquid flow channel 12, the edge of the second shell 2 is sealed and connected with the edge of the third shell 3 to form a heating chamber 23, the edge of the third shell 3 is sealed and connected with the edge of the fourth shell 4 to form a second sealed liquid flow channel 34, and the edge of the fourth shell 4 is sealed and connected with the edge of the fifth shell 5 to form a third sealed liquid flow channel 45.

[0042] like Figure 4As shown, the edges of the second coolant inlet 26 and the second coolant outlet 27 are both concave downward, the edges of the third coolant inlet 36 and the third coolant outlet 37 are both convex upward, the edge of the second coolant inlet 26 is sealed and connected to the edge of the third coolant inlet 36, and the edge of the second coolant outlet 27 is sealed and connected to the edge of the third coolant outlet 37; thereby the heating chamber 23 is isolated from the first sealed liquid flow channel 12 and the second sealed liquid flow channel 34 respectively, and the coolant in the first sealed liquid flow channel 12 and the second sealed liquid flow channel 34 is prevented from entering the heating chamber 23 and causing a short circuit. In the two adjacent basic heat exchange units 20, the fourth shell 4 of the upper basic heat exchange unit 20 is provided with a fourth coolant inlet 46 and a fourth coolant outlet 47, and the fifth shell is provided with a fifth coolant inlet 56 and a fifth coolant outlet 57. The edges of the fourth coolant inlet 46 and the fourth coolant outlet 47 are both recessed downward, the edges of the fifth coolant inlet 56 and the fifth coolant outlet 57 are both protruding upward, the edge of the fourth coolant inlet 46 is sealedly connected to the edge of the fifth coolant inlet 56, and the edge of the fourth coolant outlet 47 is sealedly connected to the edge of the fifth coolant outlet 57; thereby, the third sealed liquid flow channel 45 is respectively isolated from the second sealed liquid flow channel 34, preventing the coolant in the second sealed liquid flow channel 34 from entering the third sealed liquid flow channel 45, and also preventing the refrigerant in the third sealed liquid flow channel 45 from entering the second sealed liquid flow channel 34.

[0043] like Figure 5As shown, the first shell 1 is further provided with a first refrigerant inlet 18 and a first refrigerant outlet 19, the second shell 2 is further provided with a second refrigerant inlet 28 and a second refrigerant outlet 29, and the third shell 3 is further provided with a third refrigerant inlet 38 and a third refrigerant outlet 39; the edges of the second refrigerant inlet 28 and the second refrigerant outlet 29 are both concave downward, the edges of the third refrigerant inlet 38, the third refrigerant outlet 39, the fourth refrigerant inlet 48 and the fourth refrigerant outlet 49 are all convex upward, and the second refrigerant inlet 28 and the second refrigerant outlet 29 are both concave downward, and the edges of the third refrigerant inlet 38, the third refrigerant outlet 39, the fourth refrigerant inlet 48 and the fourth refrigerant outlet 49 are all convex upward. The edges of the port 28, the third refrigerant inlet 38, and the fourth refrigerant inlet 48 are sealed and connected, and the edges of the second refrigerant outlet 29, the third refrigerant outlet 39, and the fourth refrigerant outlet 49 are sealed and connected; thereby, the third sealed liquid flow channel 45 is isolated from the heating chamber 23 and the second sealed liquid flow channel 34, respectively, to prevent the coolant in the second sealed liquid flow channel 34 from entering the heating chamber 23 or the third sealed liquid flow channel 45, and also to prevent the refrigerant in the third sealed liquid flow channel 45 from entering the heating chamber 23 or the second sealed liquid flow channel 34. One end of the refrigerant liquid inlet connecting tube 68 is sealed and connected to the edge of the second refrigerant inlet 28, and the other end of the refrigerant liquid inlet connecting tube 68 is sealed and connected to the edge of the first refrigerant inlet 18; one end of the refrigerant liquid outlet connecting tube 69 is sealed and connected to the edge of the second refrigerant outlet 29, and the other end of the refrigerant liquid outlet connecting tube 69 is sealed and connected to the edge of the first refrigerant outlet 19, so that the third sealed liquid flow channel 45 is respectively isolated from the first sealed liquid flow channel 12, preventing the coolant in the first sealed liquid flow channel 12 from entering the third sealed liquid flow channel 45, and also preventing the refrigerant in the third sealed liquid flow channel 45 from entering the first sealed liquid flow channel 12. Thus, the first refrigerant inlet 18, the refrigerant liquid inlet connecting tube 68, the second refrigerant inlet 28, the third refrigerant inlet 38, the fourth refrigerant inlet 48, the third sealed liquid flow channel 45, the fourth refrigerant outlet 49, the third refrigerant outlet 39, the second refrigerant outlet 29, the refrigerant liquid outlet connecting tube 69, and the first refrigerant outlet 19 form a flow channel, so that the refrigerant circulates with the outside through the first refrigerant inlet 18 and the first refrigerant outlet 19 respectively.

[0044] like Figure 1 , Figure 5As shown, the basic heat exchange unit 20 at the top layer can also be connected with a refrigerant inlet pipe 8, a refrigerant outlet pipe 9, a coolant inlet pipe 6, and a coolant outlet pipe 7; one end of the refrigerant inlet pipe 8 is connected to the first refrigerant inlet 18 of the first shell 1, and one end of the refrigerant outlet pipe 9 is connected to the first refrigerant outlet 19 of the first shell 1; it is connected to an external refrigeration system, such as a compressor, through the refrigerant inlet pipe 8 and the refrigerant outlet pipe 9 respectively. When refrigeration is required, the refrigerant enters the refrigerant inlet pipe 8 from the external refrigeration system, enters the third sealed liquid flow channel 45 to complete heat absorption, and then flows out from the coolant outlet pipe 7. One end of the coolant inlet pipe 6 is connected to the first coolant inlet 16 of the first shell 1, and one end of the coolant outlet pipe 7 is connected to the first coolant outlet 17 of the first shell 1; it is connected to an external coolant circuit through the coolant inlet pipe 6 and the coolant outlet pipe 7 respectively, for example, the external coolant circuit is a vehicle coolant circuit.

[0045] The first shell 1, the second shell 2, the third shell 3, the fourth shell 4, and the fifth shell 5 can be made of stamping technology respectively, with compact structure, convenient installation, and improved production efficiency. The first shell 1, the second shell 2, the third shell 3, the fourth shell 4, and the fifth shell 5 are preferably made of metal materials, which avoids the problem that the existing PCT liquid heating assembly adopts the traditional die-casting structure, which is complex and cannot avoid internal air entrainment. After long-term work, the coolant or refrigerant is prone to leakage and poor insulation. The metal material is preferably aluminum, which is a good conductor of heat. Its thermal conductivity is 3 times greater than that of iron, and it is an ideal heat exchange and heat dissipation material. Brazing or laser welding is preferably used to form a sealed cavity between the first shell 1 and the second shell 2, between the second shell 2 and the third shell 3, between the third shell 3 and the fourth shell 4, and between the fourth shell 4 and the fifth shell 5 to improve welding reliability. Brazing or laser welding belongs to conventional welding methods, among which brazing has the advantages of small deformation, smooth and beautiful joints, and is suitable for welding precise, complex and components composed of different materials. Laser welding has the advantages of not requiring a vacuum chamber and not generating X-rays during the welding process. It solves the industry's technical problem that the traditional die-casting structure has pores inside, which reduces the strength of the component wall. After long-term work, coolant may enter the heating unit, causing the product to be electrified and the entire vehicle to be unable to drive.

[0046] As a preferred embodiment, another stacking method in which the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 are stacked and connected in a certain order from top to bottom is: it is provided with a heating section and a refrigeration section, and the heating section and the refrigeration section are stacked and connected in a certain order from top to bottom, wherein the refrigeration section is composed of the refrigerant flow channel unit 11 and the coolant flow channel unit (equivalent to the first coolant flow channel unit 13 of the first integrated core method) alternately stacked and connected from top to bottom, and the heating section is composed of other coolant flow channel units (equivalent to the second coolant flow channel unit 14 of the first integrated core method) and the PTC heating unit 10 alternately stacked and connected from top to bottom, and at the same time satisfies the condition that the refrigerant flow channel unit 11 and the PTC heating unit 10 are not adjacent to each other. The refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 are integrated to reduce the existing layout space, save the number of connecting pipes, occupy a small space, and achieve the purpose of having both heating and cooling functions in one assembly, avoiding the disadvantages that all the heaters and chillers currently on the market are two relatively independent assemblies, and the two are connected by pipes according to the thermal management system architecture, which occupies a large space and makes pipe layout and connection difficult. As a further preferred embodiment, the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 in this stacking method are respectively the same as the structures and further preferred structures and functions of the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 of the first stacking method described above, and will not be repeated here.

[0047] In addition to the above two ways, there are many other ways of stacking the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 in a certain order from top to bottom, as long as the condition that the refrigerant flow channel unit 11 and the PTC heating unit 10 are not adjacent to each other is met, and they will not be repeated here.

[0048] Depend on Figure 2 , Figure 6As shown, the present invention provides a liquid heating, cooling and heat exchange assembly, which is provided with a box-shaped shell 15, and an integrated core of liquid heating, cooling and heat exchange as described in any one of the above items arranged in the box-shaped shell 15. The box-shaped shell 15 plays a role of sealing and heat preservation, reducing heat loss and improving power density. Although the water tank shell in the prior art is made of hydrolysis-resistant material, it is easy to produce problems such as glass fiber and masterbatch precipitation after long-term high-temperature operation when combined with die-castings, causing melting and leakage, causing local high temperature, and there is a risk of melting other parts around the vehicle. The present invention uses a unique stacking structure design of the integrated core of liquid heating, cooling and heat exchange, and installs it in the box-shaped shell 15, replacing the die-castings and plastic water tank structures in the prior art, effectively reducing the risk of melting and leakage and improving insulation reliability. The box-shaped housing 15 can be a sealed cavity structure surrounded by an upper cover plate 31, a side panel 32, and a bottom plate 33. The integrated core of the liquid heating, cooling and heat exchange is arranged inside the box-shaped housing 15. The refrigerant inlet pipe 8, the refrigerant outlet pipe 9, the coolant inlet pipe 6, and the coolant outlet pipe 7 pass through the upper cover plate 31 and extend upward. A detachable circuit board cover 35 is installed on the side panel 32. The circuit board cover 35 can be opened to facilitate the installation or removal of the circuit board 22. In order to improve the sealing effect between the PTC liquid heating core and the outside world, the circuit board 22 is conveniently installed. Figure 1 , Figure 3 As shown, a first sealing ring 40 is respectively installed between the refrigerant inlet pipe 8, the refrigerant outlet pipe 9, the coolant inlet pipe 6, the coolant outlet pipe 7 and the upper cover plate 31, and a second sealing ring 41 is installed between the integrated core of liquid heating and cooling heat exchange and the side panel 32.

[0049] A controller 21 is installed between the basic heat exchange unit 20 at the bottom and the bottom of the box-shaped shell 15, and an IGBT transistor 22 is installed on the controller 21; the controller 21 is connected to the circuit board 24 through a wire, and the circuit board 24 is connected to the positive and negative poles of the PTC heating unit 10, forming an internal conductive loop between the controller 21 and the PTC heating package. The controller 21 is connected to the high-voltage connector 25 and the low-voltage connector 30 respectively, forming an external conductive loop of an external control signal, a low-voltage control power supply and a high-voltage load power supply, wherein the high-voltage connector 25 serves as a connector for the power supply of the PTC liquid heating core unit 42 load, and the low-voltage connector 30 provides low-voltage power supply for the controller 21 and receives external signals. The heat generated by the IGBT transistor 22 is conducted upward to the coolant in the basic heat exchange unit 20, thereby realizing the heat dissipation of the IGBT transistor 22. The high-voltage connector 25 and the low-voltage connector 30 are installed on the box-shaped shell 15.

[0050] The present invention provides an integrated core for liquid heating, cooling and heat exchange and a heating, cooling and heat exchange assembly, wherein the refrigerant flow channel unit 11, the coolant flow channel unit and the PTC heating unit 10 are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit 11 and the PTC heating unit 10 are not adjacent to each other; the PTC heating unit 10 provides heat to its adjacent coolant flow channel unit, and the refrigerant flow channel unit 11 absorbs heat from its adjacent coolant flow channel unit, thereby reducing the existing layout space, saving the number of connecting pipelines, occupying a small space, and achieving the purpose of having both heating and cooling functions in one assembly. The present invention is mainly aimed at the solution of integrating the liquid heater and chiller (or plate heat exchange device) in the thermal management system of electric vehicles or new energy vehicles, and mainly involves a heating device, a heat exchange structure, a coolant and refrigerant circulation channel and a circuit control part, and particularly relates to a core assembly with dual functions of heating and heat exchange.

[0051] It should be noted that:

[0052] The refrigerant flow channel unit 11 of the present invention includes a first coolant flow channel unit 13 and a second coolant flow channel unit 14, as well as a basic heat exchange unit 20 and a liquid heating core unit 42, which are all devices.

[0053] In addition to being connected to an external refrigeration system, the third sealed liquid flow channel 45 of the refrigerant flow channel unit 11 of the present invention can also be connected to an external system that needs to be heated, and the external system that needs to be heated includes a heat exchanger, etc. The user chooses heating or cooling according to actual needs. When heating is required, the PTC heating unit 1 and the refrigerant flow channel unit 11 are turned on at the same time, and the third sealed liquid flow channel 45 of the refrigerant flow channel unit 11 is connected to the external system that needs to be heated. The refrigerant enters the third sealed liquid flow channel 45 from the system pipeline that needs to be heated, and after absorbing heat and heating, it returns to the external system that needs to be heated to achieve the purpose of external heating. This method usually requires increasing the power of the PTC heating unit 1.

[0054] In addition to absorbing heat from the adjacent coolant flow channel unit, the refrigerant flow channel unit 11 of the present invention can also release heat to the adjacent coolant flow channel unit. The user can choose to heat / cool the vehicle end by outputting the coolant or refrigerant according to actual needs. Since the refrigerant flow channel unit 11 and the coolant flow channel unit are adjacent to each other, the input coolant or refrigerant can be heated / cooled by heat transfer between the coolant and the refrigerant. There are at least four ways to achieve this:

[0055] (1) When the vehicle needs to be heated and a coolant with a higher temperature is selected to achieve the purpose of heating, the input coolant temperature is set lower than the input refrigerant temperature, so that the input coolant absorbs heat from the input refrigerant, thereby increasing the temperature of the output coolant, thereby heating the vehicle. If the requirement is still not met, the PTC heating unit can be started at the same time to assist in heating and increase the temperature of the output coolant;

[0056] (2) When the vehicle needs to be heated and a refrigerant with a higher temperature is selected to achieve the purpose of heating, the input refrigerant temperature is set lower than the input coolant temperature, so that the input refrigerant absorbs heat from the input coolant, thereby increasing the output refrigerant temperature, thereby heating the vehicle;

[0057] (3) When the vehicle needs to be cooled, a coolant with a lower temperature is selected to output to achieve the purpose of cooling. The input coolant temperature is set higher than the input refrigerant temperature, so that the input coolant releases heat to the input refrigerant, thereby reducing the output coolant temperature, thereby cooling the vehicle;

[0058] (4) When the vehicle needs to be cooled, a refrigerant with a lower output temperature is selected to achieve the purpose of cooling. The input refrigerant temperature is set higher than the input coolant temperature, so that the input refrigerant releases heat to the input coolant, thereby reducing the output refrigerant temperature and cooling the vehicle.

[0059] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An integrated core for liquid heating, cooling and heat exchange, comprising a liquid flow channel unit and a PTC heating unit (10), characterized in that: The liquid flow channel unit is provided with a refrigerant flow channel unit (11) and a cooling liquid flow channel unit, the refrigerant flow channel unit (11) is used for circulating the refrigerant, and the cooling liquid flow channel unit is used for circulating the cooling liquid; the number of the refrigerant flow channel unit (11), the cooling liquid flow channel unit and the PTC heating unit (10) is one or more respectively, the refrigerant flow channel unit (11), the cooling liquid flow channel unit and the PTC heating unit (10) are stacked and connected in a certain order from top to bottom, and the refrigerant flow channel unit (11) and the PTC heating unit (10) are not adjacent to each other; The coolant flow channel unit comprises a first coolant flow channel unit (13) and a second coolant flow channel unit (14); the PTC heating unit (10) is arranged between the first coolant flow channel unit (13) and the second coolant flow channel unit (14); the first coolant flow channel unit (13), the PTC heating unit (10) and the second coolant flow channel unit (14) are stacked and connected in sequence from top to bottom to form a group of liquid heating core units (42); the number of the liquid heating core units (42) is one or more groups; the liquid heating core units (42) and the refrigerant flow channel unit (11) are arranged as a basic heat exchange unit (20) and are stacked and connected in sequence from top to bottom in alternating manner; A stacking method in which the refrigerant flow channel unit (11), the coolant flow channel unit and the PTC heating unit (10) are stacked and connected in a certain order from top to bottom is: a heating section and a cooling section are provided, and the heating section and the cooling section are stacked and connected in a certain order from top to bottom, wherein the cooling section is formed by the refrigerant flow channel unit (11) and the coolant flow channel unit being stacked and connected in sequence from top to bottom, and the heating section is formed by the other coolant flow channel units and the PTC heating unit (10) being stacked and connected in sequence from top to bottom.

2. The integrated core for liquid heating, cooling and heat exchange according to claim 1, characterized in that: The first cooling liquid flow channel unit (13) is provided with a first shell (1) and a second shell (2); the first shell (1) and the second shell (2) are stacked from top to bottom and connected to form a first sealed liquid flow channel (12); the first shell (1) is provided with a first cooling liquid inlet (16) and a first cooling liquid outlet (17); the first sealed liquid flow channel (12) guides the cooling liquid from the first cooling liquid inlet (16) to the first cooling liquid outlet (17); the second shell (2) is provided with a second cooling liquid inlet (26) and a second cooling liquid outlet (27) which are connected to the first sealed liquid flow channel (12); The second coolant flow channel unit (14) is provided with a third shell (3) and a fourth shell (4); the third shell (3) and the fourth shell (4) are stacked from top to bottom and connected to form a second sealed liquid flow channel (34); the third shell (3) is provided with a third coolant inlet (36) and a third coolant outlet (37); the second sealed liquid flow channel (34) guides the coolant from the third coolant inlet (36) to the third coolant outlet (37); the second coolant inlet (26) is connected to the third coolant inlet (36), and the third coolant outlet (37) is connected to the second coolant outlet (27); The second shell (2) and the third shell (3) are stacked from top to bottom and connected to form a heating chamber (23), and the PTC heating unit (10) is installed in the heating chamber (23); The refrigerant flow channel unit (11) is provided with the fourth shell (4) and the fifth shell (5); the fourth shell (4) and the fifth shell (5) are stacked from top to bottom and connected to form a third sealed liquid flow channel (45); the third sealed liquid flow channel (45) is provided with a fourth refrigerant inlet (48) and a fourth refrigerant outlet (49); the third sealed liquid flow channel (45) guides the refrigerant from the fourth refrigerant inlet (48) to the fourth refrigerant outlet (49); the third sealed liquid flow channel (45) is isolated from the first sealed liquid flow channel (12) and the second sealed liquid flow channel (34), respectively.

3. The integrated core for liquid heating, cooling and heat exchange according to claim 2, characterized in that: It is also provided with a refrigerant liquid inlet connecting pipe (68) and a refrigerant liquid outlet connecting pipe (69); the fourth shell (4) is also provided with the fourth refrigerant inlet (48) and the fourth refrigerant outlet (49), one end of the refrigerant liquid inlet connecting pipe (68) is connected to the fourth refrigerant inlet (48), the other end of the refrigerant liquid inlet connecting pipe (68) passes through the third shell (3), the second shell (2), and the first shell (1) in sequence, one end of the refrigerant liquid outlet connecting pipe (69) is connected to the fourth refrigerant outlet (49), the other end of the refrigerant liquid outlet connecting pipe (69) passes through the third shell (3), the second shell (2), and the first shell (1) in sequence, ), the first shell (1); the first coolant inlet (16), the second coolant inlet (26), the third coolant inlet (36), the first sealed liquid flow channel (12), the second sealed liquid flow channel (34), and the third coolant outlet (37), the second coolant outlet (27), and the first coolant outlet (17) form a first flow channel; the fourth refrigerant inlet (48), the refrigerant liquid inlet connecting pipe (68), the third sealed liquid flow channel (45), the fourth refrigerant outlet (49), and the refrigerant liquid outlet connecting pipe (69) form a second flow channel, and the first flow channel and the second flow channel are isolated.

4. The integrated core for liquid heating, cooling and heat exchange according to claim 3, characterized in that: The number of the basic heat exchange units (20) is set to be multiple, and two adjacent basic heat exchange units (20) are arranged in parallel stacking connection; the other end of the refrigerant liquid inlet connecting pipe (68) and the other end of the refrigerant liquid outlet connecting pipe (69) of the basic heat exchange unit (20) located at the bottom are respectively connected to the third sealed liquid flow channel (45) of the basic heat exchange unit (20) located at the top; the first coolant inlet (16) and the first coolant outlet (17) of the basic heat exchange unit (20) located at the bottom are respectively connected to the second sealed liquid flow channel (34) of the basic heat exchange unit (20) located at the top.

5. The integrated core for liquid heating, cooling and heat exchange according to claim 4, characterized in that: The first shell (1), the second shell (2), the third shell (3), and the fourth shell (4) are all cover-like structures with an open lower end, and all have edges extending downward and outward; the edge of the first shell (1) is sealedly connected to the edge of the second shell (2) to form the first sealed liquid flow channel (12), the edge of the second shell (2) is sealedly connected to the edge of the third shell (3) to form a heating chamber (23), the edge of the third shell (3) is sealedly connected to the edge of the fourth shell (4) to form the second sealed liquid flow channel (34), and the edge of the fourth shell (4) is sealedly connected to the edge of the fifth shell (5) to form the third sealed liquid flow channel (45); The edges of the second coolant inlet (26) and the second coolant outlet (27) are both concave downwards, the edges of the third coolant inlet (36) and the third coolant outlet (37) are both convex upwards, the edge of the second coolant inlet (26) is sealedly connected to the edge of the third coolant inlet (36), and the edge of the second coolant outlet (27) is sealedly connected to the edge of the third coolant outlet (37); In the two upper and lower adjacent basic heat exchange units (20), the fourth shell (4) of the upper basic heat exchange unit (20) is provided with a fourth coolant inlet (46) and a fourth coolant outlet (47), and the fifth shell is provided with a fifth coolant inlet (56) and a fifth coolant outlet (57); the edges of the fourth coolant inlet (46) and the fourth coolant outlet (47) are both concave downward, the edges of the fifth coolant inlet (56) and the fifth coolant outlet (57) are both convex upward, the edge of the fourth coolant inlet (46) is sealedly connected to the edge of the fifth coolant inlet (56), and the edge of the fourth coolant outlet (47) is sealedly connected to the edge of the fifth coolant outlet (57); The first shell (1) is further provided with a first refrigerant inlet (18) and a first refrigerant outlet (19), the second shell (2) is further provided with a second refrigerant inlet (28) and a second refrigerant outlet (29), and the third shell (3) is further provided with a third refrigerant inlet (38) and a third refrigerant outlet (39); the edges of the second refrigerant inlet (28) and the second refrigerant outlet (29) are both concave downwards, the edges of the third refrigerant inlet (38), the third refrigerant outlet (39), the fourth refrigerant inlet (48), and the fourth refrigerant outlet (49) are both convex upwards, and the second refrigerant inlet (28), the third refrigerant outlet (39) and the fourth refrigerant inlet (48) are both concave downwards. The edges of the refrigerant inlet (38) and the fourth refrigerant inlet (48) are sealed and connected, and the edges of the second refrigerant outlet (29), the third refrigerant outlet (39), and the fourth refrigerant outlet (49) are sealed and connected; one end of the refrigerant liquid inlet connecting pipe (68) is sealed and connected to the edge of the second refrigerant inlet (28), and the other end of the refrigerant liquid inlet connecting pipe (68) is sealed and connected to the edge of the first refrigerant inlet (18); one end of the refrigerant liquid outlet connecting pipe (69) is sealed and connected to the edge of the second refrigerant outlet (29), and the other end of the refrigerant liquid outlet connecting pipe (69) is sealed and connected to the edge of the first refrigerant outlet (19).

6. The integrated core for liquid heating, cooling and heat exchange according to claim 5, characterized in that: The basic heat exchange unit (20) located at the top layer is also respectively connected with a refrigerant inlet pipe (8), a refrigerant outlet pipe (9), a cooling liquid inlet pipe (6), and a cooling liquid outlet pipe (7); one end of the refrigerant inlet pipe (8) is connected to the first refrigerant inlet (18) of the first shell (1), and one end of the refrigerant outlet pipe (9) is connected to the first refrigerant outlet (19) of the first shell (1); one end of the cooling liquid inlet pipe (6) is connected to the first cooling liquid inlet (16) of the first shell (1), and one end of the cooling liquid outlet pipe (7) is connected to the first cooling liquid outlet (17) of the first shell (1).

7. The integrated core for liquid heating, cooling and heat exchange according to claim 2, characterized in that: The first shell (1), the second shell (2), the third shell (3), the fourth shell (4), and the fifth shell (5) are respectively manufactured by a stamping process.

8. A liquid heating and cooling heat exchange assembly, characterized in that: It is provided with a box-shaped shell (15), and an integrated core for liquid heating, cooling and heat exchange as claimed in any one of claims 1 to 7, which is arranged in the box-shaped shell (15).

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