Extrusion aluminum alloy type new energy automobile heat exchanger structure
By integrating the heat transfer plate of the heat exchanger with the shell and installing rib strips, and forming by extrusion process, the problems of complex and low efficiency of the existing plate heat exchanger are solved, and the production process is simplified, cost reduction and heat exchange efficiency are guaranteed.
Patent Information
- Application Number
- CN202421419457.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The production process of existing plate heat exchangers is complex and requires a variety of molds and stamping processes, resulting in waste of materials, cumbersome welding steps, low production efficiency and high cost.
Integrate the heat transfer plate of the heat exchanger with the shell, set up rib strips arranged in parallel, and form directly through the extrusion process to reduce mold use and material waste, and eliminate welding steps.
The production process is simplified, production efficiency is improved, costs are reduced, while heat exchange efficiency is ensured, and fault occurrence and maintenance costs are reduced.
Smart Images
Figure CN222926030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical manufacturing, and particularly relates to a structure of an extrusion aluminum alloy type new energy vehicle heat exchanger. Background Technique
[0002] As the heat generation of new energy electric vehicles is increasing, the requirements for the vehicle thermal management technology are getting higher and higher. Especially for the battery pack position, maintaining a certain temperature range through thermal management can keep the battery in better performance. The existing thermal management technologies mainly include air cooling, liquid cooling, heat pipe cooling, and phase change cooling technologies. Among them, the heat pipe and phase change cooling technologies are not yet mature, and air cooling and liquid cooling are the main methods. Among them, the mainstream structural method of the liquid cooling heat exchanger (Chiller) is the plate heat exchanger solution. The plate heat exchanger in the prior art often needs to be manufactured by stamping process. The main heat exchange part of it has a relatively complex structure, usually with complex corrugated or concave-convex pattern designs, and cannot be directly extruded. When manufacturing the main part, it is necessary to use the stamping process to manufacture multiple layers of metal stamping plates, corresponding to form multiple heat transfer plates and the shell part in the heat exchanger, and then weld these stamping plates by brazing to finally form the main part of the heat exchanger. A variety of molds are required in this manufacturing process, and a lot of manufacturing materials in the edge areas will be wasted during the stamping process of the metal plate. The subsequent welding process of multiple stamping plates is also more cumbersome, time-consuming, with low production efficiency and high production costs invested. Summary of the Utility Model
[0003] The purpose of the utility model is to adjust the structure of the plate heat exchanger, regard the heat transfer plates and the shell inside the plate heat exchanger as a whole, set parallel ribs on the heat transfer plates, and use these heat transfer plates with ribs to replace the original plates, so that the main heat exchange part of the heat exchanger can be manufactured by extrusion process. While ensuring the original heat dissipation efficiency, it reduces the use of molds and the waste of manufacturing materials, omits the welding process steps in the middle process, thereby reducing the complexity of component production, improving production efficiency, and reducing the input cost.
[0004] The technical solution of the utility model is to provide a structure of an extrusion aluminum alloy type new energy vehicle heat exchanger, which includes a heat exchanger main body, a first water inlet and outlet, a second water inlet and outlet, a sealing plate, and a plug.
[0005] There are two sets of flow channels inside the heat exchanger body. The first water inlet and outlet are set at two diagonal positions on one side of the heat exchanger body, and the second water inlet and outlet are set at the remaining two diagonal positions on the same side of the heat exchanger body. The two water ports in the first water inlet and outlet are connected through one set of flow channels of the heat exchanger body, and the two water ports in the second water inlet and outlet are connected through the other set of flow channels of the heat exchanger body. The sealing plates are installed at both ends of the heat exchanger body, and the blocking blocks are installed on the heat exchanger body for sealing it.
[0006] Further, the inside of the heat exchanger body includes a first flow channel, a second flow channel and heat transfer plates;
[0007] The first flow channel and the second flow channel are cross-distributed with the heat transfer plates as the intermediate medium, and the first flow channel and the second flow channel are not connected. The first flow channel and the second flow channel are used to transport the coolant, and the coolant in the two flow channels exchanges heat through the heat transfer plates. The overall structure formed by the first flow channel, the second flow channel and the heat transfer plates is located in the middle of the heat exchanger body, and both ends of this overall structure are respectively connected to the sealing plates.
[0008] Further, turbulator ribs are equally spaced on the surface of the heat transfer plates. The turbulator ribs are used to disturb the coolant flowing in the first flow channel and the second flow channel, so that the coolant can fully contact with the heat transfer plates.
[0009] Further, the heat exchanger body also includes four confluence cavities, which are respectively located at the four corners of the heat exchanger body. One side of the confluence cavity is connected to the sealing plate, and the other side is connected to the blocking block.
[0010] Further, the two water ports in the first water inlet and outlet are respectively installed on the confluence cavities at two diagonal positions of the heat exchanger body and are connected to the confluence cavities. The two water ports in the second water inlet and outlet are respectively installed on the confluence cavities at the remaining two diagonal positions of the heat exchanger body and are connected to the confluence cavities.
[0011] Further, the two water ports in the first water inlet and outlet are respectively connected to the first flow channel through the confluence cavities below them, and the two water ports in the second water inlet and outlet are respectively connected to the second flow channel through the confluence cavities below them.
[0012] Further, a same-spacing tooth-shaped structure is set on one side of the sealing plate, and this spacing corresponds to the spacing of the heat transfer plates in the heat exchanger body.
[0013] Further, the structure of the extrusion aluminum alloy new energy vehicle heat exchanger includes four sealing plates. The four sealing plates are divided into two groups and are respectively set at both ends of the heat exchanger body for sealing the heat exchanger body.
[0014] Further, the structure of the extrusion aluminum alloy new energy vehicle heat exchanger includes four blocking blocks. The four blocking blocks are respectively set on the side of the confluence cavity that is not connected to the sealing plate for sealing the confluence cavity.
[0015] The beneficial effects of the present utility model are as follows:
[0016] First, in the technical solution of the present utility model, the plate and the shell in the heat exchanger are regarded as a whole, and ribs for disturbing the coolant are arranged on the plate, increasing the contact area between the plate and the coolant and improving the heat exchange efficiency. The heat exchange main body structure of the heat exchanger in the present utility model can be integrally formed directly by an extrusion process. Compared with the heat exchanger structure in the prior art, while ensuring the heat exchange efficiency, it can also eliminate the welding step in the production process of the heat exchange main body structure, simplify the production process, shorten the production time, and thus improve the production efficiency. The technical solution in the present utility model can also reduce the number of molds used in the production process, reduce the waste of production materials, and reduce the production cost.
[0017] Second, the technical solution in the present utility model adjusts the structure of the plate heat exchanger, reducing the complexity of its heat exchange main body structure. The integrated heat exchange main body structure is not prone to failure during use, reducing the subsequent maintenance cost. Except for the heat exchange main body structure, the rest of the parts can be installed on the heat exchange main body structure by laser welding. Laser welding is faster and suitable for high-efficiency production, further improving the production efficiency. Description of the Drawings
[0018] The above and / or additional advantages of the present utility model will become obvious and easy to understand in the description of the embodiments in conjunction with the following drawings, where:
[0019] Figure 1 is the overall structural schematic diagram of the extrusion aluminum alloy type new energy vehicle heat exchanger structure according to an embodiment of the present utility model;
[0020] Figure 2 is the internal structural schematic diagram of the heat exchanger after removing part of the sealing plate and the plug according to an embodiment of the present utility model;
[0021] Figure 3 is the structural schematic diagram of the heat exchanger main body according to an embodiment of the present utility model;
[0022] Figure 4 is the structural schematic diagram of the sealing plate according to an embodiment of the present utility model;
[0023] Figure 5 is the initial structural schematic diagram of the heat exchanger main body without removing the material to be removed according to an embodiment of the present utility model;
[0024] Figure 6 is the position schematic diagram of the material to be removed according to an embodiment of the present utility model;
[0025] Among them, 1 - heat exchanger body, 11 - first flow channel, 12 - second flow channel, 13 - heat transfer plate, 131 - turbulator rib, 14 - confluence chamber, 2 - first water inlet / outlet, 3 - second water inlet / outlet, 4 - sealing plate, 5 - plug, material to be removed - 6. Detailed implementation manner
[0026] In order to more clearly understand the above - mentioned objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.
[0027] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.
[0028] As Figure 1 shown, this embodiment provides a heat exchanger structure for a new - energy vehicle with an extruded aluminum alloy type. The heat exchanger structure includes a heat exchanger body 1, a first water inlet / outlet 2, a second water inlet / outlet 3, a sealing plate 4 and a plug 5.
[0029] As Figure 2 shown, two non - communicating flow channels are arranged inside the heat exchanger body 1. The first water inlet / outlet 2 is arranged at two diagonal positions on one side of the heat exchanger body 1, and the second water inlet / outlet 3 is arranged at the remaining two diagonal positions on the same side of the heat exchanger body 1. The two water inlets / outlets in the first water inlet / outlet 2 are connected through one of the flow channels in the heat exchanger body 1, and the two water inlets / outlets in the second water inlet / outlet 3 are connected through the other flow channel in the heat exchanger body 1. The sealing plate 4 is installed at both ends of the heat exchanger body 1 to seal both ends of the heat exchanger body 1, and the plug 5 is arranged on the side of the confluence chamber 14 that is not connected to the sealing plate 4 to seal the confluence chamber 14.
[0030] As Figure 3 shown, the heat exchanger body 1 is an H - shaped columnar structure, which includes a first flow channel 11, a second flow channel 12, a heat transfer plate 13 and a confluence chamber 14.
[0031] The first flow channel 11 and the second flow channel 12 are cross-distributed with the heat transfer plate 13 as the intermediate medium, that is, the heat transfer plate 13 is the intermediate medium separating the first flow channel 11 and the second flow channel 12. The first flow channel 11 and the second flow channel 12 are combined together in a cross-arrangement manner. The overall structure formed by the first flow channel 11, the second flow channel 12 and the heat transfer plate 13 is located in the middle position of the heat exchanger body 1, and both ends of the overall structure are connected to the sealing plate 4 by welding. Both the first flow channel 11 and the second flow channel 12 are used to convey the coolant, and the coolant in the two flow channels exchanges heat through the heat transfer plate 13.
[0032] There are a total of four confluence chambers 14, and the four confluence chambers 14 are respectively located at the four corners of the heat exchanger body 1. One side of the confluence chamber 14 is connected to the sealing plate 4, and the other side is connected to the plug 5.
[0033] A plurality of turbulator ribs 131 are arranged at equal intervals on the surface of the heat transfer plate 13. The turbulator ribs 131 are used to disturb the coolant flowing in the first flow channel 11 and the second flow channel 12, so that the coolant fully contacts the heat transfer plate 13 for heat absorption or heat release, enhancing the heat exchange effect of the coolant in the first flow channel 11 and the second flow channel 12.
[0034] Two water ports in the first water inlet and outlet 2 are respectively installed on the confluence chambers 14 at two diagonal positions of the heat exchanger body 1 and are communicated with the confluence chambers 14. Two water ports in the second water inlet and outlet 3 are respectively installed on the confluence chambers 14 at the remaining two diagonal positions of the heat exchanger body 1 and are communicated with the confluence chambers 14.
[0035] In this embodiment, the heat exchanger body 1 (that is, the overall formed by the first flow channel 11, the second flow channel 12, the heat transfer plate 13 and the confluence chamber 14) is made of aluminum alloy and integrally formed by an extrusion process. Specifically, a mold matching the initial structural shape of the heat exchanger body 1 is set, the aluminum alloy material heated to an appropriate temperature is put into an extruder, and the aluminum alloy material is pushed through the mold by mechanical pressure. The extruded material is cooled and shaped to form the initial structure as shown in Figure 5 , and the material to be removed 6 on the initial structure is machined and removed in the way shown in Figure 5 to form the heat exchanger body 1 as shown in Figure 6 Figure 3 Figure 3 .
[0036] The structure of the heat exchanger body 1 in this embodiment can be formed by extrusion process as long as a corresponding set of molds is equipped, and no other additional steps are required during the forming process, such as welding, gluing, mechanical connection, etc. In the prior art, when manufacturing the main body of the heat exchanger, it is necessary to use stamping process to manufacture corresponding stamping plates for each layer of heat transfer plates and the shell part in the heat exchanger, and then use brazing to weld these stamping plates to form the main body of the heat exchanger. Moreover, multiple sets of molds are required during the process of manufacturing the corresponding stamping plates; compared with the prior art, the structure of the heat exchanger body 1 in this embodiment can directly form by using extrusion process instead of stamping process. Turbulence ribs 131 are also provided on the heat transfer plates of the heat exchanger body 1, which can achieve sufficient heat exchange. It is relatively difficult to make ideal turbulence ribs on the heat transfer plates by stamping (precision mold design, accurate stamping parameter control, and selection of easy-to-process materials are required during stamping, which is more difficult compared with extrusion process). The structure of the heat exchanger body 1 in this embodiment is easily manufactured by extrusion process, saving the cumbersome welding steps while ensuring its heat exchange efficiency, reducing the number of molds, that is, reducing the production cost and improving the production efficiency.
[0037] The first water inlet / outlet 2 and the second water inlet / outlet 3 are two groups of water inlets / outlets symmetrically arranged at the four corners on the side of the heat exchanger body 1, and are used to connect with the pipes for transporting coolant in the vehicle interior heat exchange system. In this embodiment, the first water inlet / outlet 2 and the second water inlet / outlet 3 are welded to the heat exchanger body 1 by laser welding.
[0038] As Figure 2 shown, the first water inlet / outlet 2 includes two water inlets / outlets, and the two water inlets / outlets are respectively connected to the first flow channel 11 through the lower converging cavity 14. When one of the water inlets / outlets of the first water inlet / outlet 2 is used as the water inlet, the other is the water outlet. The coolant enters the lower converging cavity 14 below through the water inlet, passes through the first flow channel 11, then enters the converging cavity 14 below the water outlet, and finally is discharged through the water outlet. Among them, when transporting the coolant, the two water inlets / outlets in the first water inlet / outlet 2 do not limit the flow direction of the coolant to a fixed direction, that is, any one of the water inlets / outlets can be used as the water inlet or the water outlet.
[0039] The second water inlet / outlet 3 also includes two water inlets / outlets, and the two water inlets / outlets are respectively connected to the second flow channel 12 through the lower converging cavity 14. When one of the water inlets / outlets of the second water inlet / outlet 3 is used as the water inlet, the other is the water outlet. The coolant enters the lower converging cavity 14 below through the water inlet, passes through the second flow channel 12, then enters the converging cavity 14 below the water outlet, and finally is discharged through the water outlet. Similarly, any one of the water inlets / outlets in the first water inlet / outlet 2 can be used as the water inlet or the water outlet.
[0040] As Figure 4As shown, the sealing plates 4 are arranged at both ends of the heat exchanger body 1 by welding for sealing both ends of the heat exchanger body 1. There are a total of four sealing plates 4, with two in a group respectively arranged at both ends of the heat exchanger body 1. In this embodiment, the material of the sealing plates 4 is selected as aluminum plates, which can be made by laser cutting or stamping.
[0041] The sealing plate 4 is a plate with the same spaced tooth-shaped structure locally provided. The spacing therein corresponds to the spacing of the heat transfer plates 13 in the heat exchanger body 1. The purpose of setting the same spaced tooth-shaped structure is to separate the first flow channel 11 from the second flow channel 12 when welding the sealing plate 4, so that the first flow channel 11 and the second flow channel 12 can be better sealed and will not affect each other. Since the first flow channel 11 and the second flow channel 12 are cross-distributed, if the sealing plate 4 is a rectangular plate without the same spaced tooth-shaped structure, there will be a gap between the rectangular plate and the heat transfer plate after welding. Such a gap will cause the coolant in the first flow channel 11 and the second flow channel 12 to mix together, resulting in a poor heat exchange effect.
[0042] The blocking blocks 5 are of rectangular plate structure, with a total of four. The four blocking blocks 5 are respectively connected to the side of the confluence chamber 14 that is not connected to the sealing plate 4 by welding for sealing the confluence chamber 14 together with the sealing plate 4. In this embodiment, laser welding can be used to weld the sealing plate 4 and the blocking blocks 5 to the heat exchanger body 1.
[0043] The extrusion aluminum alloy type new energy vehicle heat exchanger structure is installed in the heat exchange system inside the vehicle, and is used to transfer the heat generated inside the vehicle to the radiator through the coolant. The radiator dissipates the heat into the air to achieve heat dissipation inside the vehicle.
[0044] In this embodiment, taking heat dissipation inside the vehicle as an example, a cooling circuit is provided at the position inside the vehicle that needs heat dissipation. The two sides of the cooling circuit are the inlet and outlet of the coolant. A radiator for dissipating heat into the air outside the vehicle is also provided inside the vehicle. The radiator is provided with the inlet and outlet of the coolant. The working principle of the extrusion aluminum alloy type new energy vehicle heat exchanger structure is as follows:
[0045] Install the heat exchanger in this embodiment in the vehicle to ensure its stability. Connect the first inlet and outlet 2 to the cooling circuit at the heat dissipation position in the vehicle. Connect any one of the water inlets and outlets in the first inlet and outlet 2 as the water outlet to the inlet of the cooling circuit through a pipe, and connect the other water inlet and outlet in the first inlet and outlet 2 as the water inlet to the outlet of the cooling circuit through a pipe. A circulation channel is formed between the heat exchanger and the cooling circuit through the first flow channel 11. Add coolant to this circulation channel and install a cooling pump. Connect the second inlet and outlet 3 to the radiator in the vehicle. Connect any one of the water inlets and outlets in the second inlet and outlet 3 as the water outlet to the inlet of the radiator through a pipe, and connect the other water inlet and outlet in the second inlet and outlet 3 as the water inlet to the outlet of the radiator through a pipe. A circulation channel is formed between the heat exchanger and the radiator through the second flow channel 12. Add coolant to this circulation channel and install a cooling pump. Detect the tightness of the two circulation channels to prevent coolant leakage.
[0046] After the machine at the heat dissipation position in the vehicle works normally, start the cooling pump to start dissipating heat for the heat dissipation position.
[0047] After the coolant in the cooling circuit absorbs the heat generated by the machine, under the action of the cooling pump, it enters the first flow channel 11 inside the heat exchanger body 1 through a pipe. Under the disturbing action of the disturbing rib 131, it fully contacts the heat transfer plate 13, and transfers the absorbed heat to the coolant in the second flow channel 12 through the heat transfer plate 13, reducing its own temperature. The cooled coolant in the first flow channel 11 enters the cooling circuit through the pipe again. The coolant in the circulation channel between the heat exchanger and the cooling circuit circulates in the above manner. Among them, the coolant flows through the water inlet in the first inlet and outlet 2, the confluence chamber 14 below the water inlet, the first flow channel 11, the confluence chamber 14 below the water outlet, and the water outlet in the first inlet and outlet 2 in sequence in the heat exchanger.
[0048] The coolant in the second flow channel 12 fully contacts the heat transfer plate 13 under the disturbing action of the disturbing rib 131. After absorbing the heat transferred from the first flow channel 11, under the action of the cooling pump, it enters the radiator through a pipe, and dissipates the absorbed heat to the air outside the vehicle through the radiator, reducing its own temperature. The cooled coolant in the radiator enters the second flow channel 12 through the pipe again. The coolant in the circulation channel between the heat exchanger and the radiator circulates in the above manner. Among them, the coolant flows through the water inlet in the second inlet and outlet 3, the confluence chamber 14 below the water inlet, the second flow channel 12, the confluence chamber 14 below the water outlet, and the water outlet in the second inlet and outlet 3 in sequence in the heat exchanger. After the heat exchange is completed, turn off the cooling pump.
[0049] In the present utility model, terms such as "installation", "connection", "attachment", "fixation", etc. shall be understood in a broad sense. For example, "connection" may be a fixed connection, a detachable connection, or an integral connection; "attachment" may be a direct attachment or an indirect attachment through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0050] The shapes of the various components in the drawings are schematic, and there may be certain differences from their actual shapes. The drawings are only used to illustrate the principle of the present utility model and are not intended to limit the present utility model.
[0051] Although the present utility model has been disclosed in detail with reference to the drawings, it should be understood that these descriptions are merely exemplary and are not used to limit the application of the present utility model. The protection scope of the present utility model is defined by the appended claims and may include various modifications, adaptations, and equivalent solutions made to the utility model without departing from the protection scope and spirit of the present utility model.
Claims
1. An extruded aluminum alloy new energy vehicle heat exchanger structure, characterized in that: The heat exchanger structure comprises a heat exchanger body (1), a first water inlet and outlet (2), a second water inlet and outlet (3), a sealing plate (4) and a blocking block (5); Two groups of flow channels are arranged inside the heat exchanger body (1); the first water inlet and outlet (2) are arranged at two diagonal positions on one side of the heat exchanger body (1); the second water inlet and outlet (3) are arranged at the remaining two diagonal positions on the same side of the heat exchanger body (1); two water ports of the first water inlet and outlet (2) are connected through one group of flow channels of the heat exchanger body (1); two water ports of the second water inlet and outlet (3) are connected through another group of flow channels of the heat exchanger body (1); the sealing plate (4) is installed at both ends of the heat exchanger body (1); and the blocking block (5) is installed on the heat exchanger body (1) to seal it.
2. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 1, characterized in that: The heat exchanger body (1) comprises a first flow channel (11), a second flow channel (12) and a heat transfer plate (13); The first flow channel (11) and the second flow channel (12) are cross-distributed with the heat transfer plate (13) as the intermediate medium, and the first flow channel (11) and the second flow channel (12) are not connected. The first flow channel (11) and the second flow channel (12) are used to transport cooling liquid. The cooling liquid in the two flow channels exchanges heat through the heat transfer plate (13). The overall structure formed by the first flow channel (11), the second flow channel (12) and the heat transfer plate (13) is located in the middle of the heat exchanger body (1), and the two ends of the overall structure are respectively connected to the sealing plate (4).
3. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 2, characterized in that: The surface of the heat transfer plate (13) is provided with spoiler ribs (131) at equal intervals, and the spoiler ribs (131) are used to disturb the coolant flowing in the first flow channel (11) and the second flow channel (12), so that the coolant is in full contact with the heat transfer plate (13).
4. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 2, characterized in that: The heat exchanger body (1) further comprises four confluence chambers (14), the four confluence chambers (14) being respectively located at four corners of the heat exchanger body (1), one side of the confluence chamber (14) being connected to the sealing plate (4), and the other side of the confluence chamber (14) being connected to the blocking block (5).
5. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 4, characterized in that: Two of the first water inlets and outlets (2) are respectively mounted on the confluence cavities (14) at two diagonal positions of the heat exchanger body (1) and are in communication with the confluence cavities (14); and two of the second water inlets and outlets (3) are respectively mounted on the confluence cavities (14) at the remaining two diagonal positions of the heat exchanger body (1) and are in communication with the confluence cavities (14).
6. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 5, characterized in that: The two water ports of the first water inlet and outlet (2) are respectively connected to the first flow channel (11) through the confluence cavity (14) below them, and the two water ports of the second water inlet and outlet (3) are respectively connected to the second flow channel (12) through the confluence cavity (14) below them.
7. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 2, characterized in that: A tooth-shaped structure with the same spacing is arranged on one side of the sealing plate (4), and the spacing corresponds to the spacing of the heat transfer plates (13) in the heat exchanger body (1).
8. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 1, characterized in that: The extruded aluminum alloy new energy automobile heat exchanger structure comprises four sealing plates (4), and the four sealing plates (4) are arranged in groups of two at both ends of the heat exchanger body (1) for sealing the heat exchanger body (1).
9. The extruded aluminum alloy new energy vehicle heat exchanger structure according to claim 4, characterized in that: The extruded aluminum alloy new energy automobile heat exchanger structure comprises four blocking blocks (5), which are respectively arranged on one side of the confluence cavity (14) not connected to the sealing plate (4) and are used to seal the confluence cavity (14).