A valve plate embedded brazed connection sub-component structure

Abstract

This utility model relates to the technical field of brazed connection sub-component structures, and in particular to a valve plate embedded brazed connection sub-component structure. It eliminates the need to control and ensure the dimensional accuracy of the sealing surface and the compression of the sealing ring, significantly reducing process difficulty, resulting in a smaller external boundary, easier flow channel localization, simpler structure, and greatly improved reliability. It includes a valve plate and a heat exchanger plate, with the heat exchanger plate connected and mounted on the valve plate. It also includes an electronic expansion valve, a solenoid valve, and valve ports. A welding interface is provided on the outer wall of the valve plate. Multiple sets of valve ports are mounted on the valve plate, along with multiple sets of electronic expansion valves and solenoid valves. These multiple sets of electronic expansion valves and solenoid valves are connected to the multiple sets of valve ports via pre-embedded brazing. The heat exchanger plate is connected to the valve ports via brazed plates.

Description

Technical Field

[0001] This utility model relates to the technical field of brazed connection sub-component structures, and in particular to a valve plate embedded brazed connection sub-component structure. Background Technology

[0002] With the rapid development of new energy electric vehicles in China, thermal management assemblies, as an important component for battery temperature management, are also being rapidly updated and iterated. New energy module control is becoming increasingly complex, and energy utilization is becoming more and more precise. At present, new energy vehicles have increasingly higher requirements for thermal management integrated modules, which need to be highly reliable in performance while being cheaper.

[0003] Problems with traditional agent-side assemblies:

[0004] 1. The thermal management integrated module is divided into water-side and solvent-side assemblies, with the solvent-side assembly being the most complex and costly. It suffers from numerous problems, including numerous sub-components requiring extensive bolt connections, sealing with gaskets, multiple potential leakage points, poor maintainability, high cost, complex fault diagnosis, high initial cost, and heavy weight.

[0005] 2. The valve plate needs to be assembled with the Chiller, LCC, EXV, ERV, SOV, and PT. Each sub-component is connected by threads and bolts, sealed with sealing rings. The SOV, EXV, and ERV also have inner and outer sealing rings. With numerous control points, maintaining a tight seal is difficult under long-term vehicle vibration, temperature changes, and pressure fluctuations, potentially leading to micro-leakage at each location.

[0006] 3. Each sub-component requires the installation of a sealing ring, application of oil to the sealing ring, bolt assembly, visual inspection to ensure the sub-component is properly installed, and an EOL (Extreme Oxygen Leakage) check for leaks; large-scale continuous production equipment is numerous, resulting in extremely slow production efficiency.

[0007] 4. The installation of sealing rings, the application of oil to sealing rings, bolt assembly, visual inspection of whether sub-components are installed in place, and EOL airtightness inspection all require the investment of automated equipment. Every assembly position and sealing position of the valve plate requires dimensional control. There are many machining positions and the production process is extremely long.

[0008] 5. The structure is redundant. The valve plate and sub-components require mechanical fasteners such as threads, bolts, and flanges for connection, as well as sealing rings for sealing. The required structure is complex and numerous, resulting in heavy weight and many small sub-components. This does not conform to the trend of lightweighting in automobiles. Utility Model Content

[0009] To solve the above-mentioned technical problems, this utility model provides a valve plate embedded brazed connection sub-component structure that ensures the dimensional accuracy of the sealing surface without the need for control, guarantees the compression of the sealing ring, greatly reduces the process difficulty, has a smaller outer boundary, is more convenient for local flow channels, has a simpler structure, and greatly improves reliability.

[0010] This utility model discloses a valve plate embedded brazed connection sub-component structure, including a valve plate and a heat exchanger plate, with the heat exchanger plate connected and mounted on the valve plate; it also includes an electronic expansion valve, a solenoid valve, and valve ports. A welding interface is provided on the outer wall of the valve plate, and multiple sets of valve ports are mounted on the valve plate. Multiple sets of electronic expansion valves and multiple sets of solenoid valves are mounted on the valve plate, and the multiple sets of electronic expansion valves and multiple sets of solenoid valves are connected to the multiple sets of valve ports via pre-embedded brazing. The heat exchanger plate is connected to the valve ports via brazed plates; the heat exchanger plate eliminates flange connections, sealing rings, and bolt fastening. The electronic expansion valve eliminates the need for a threaded connection between the valve plate and the valve plate, as well as the external and internal leakage sealing rings. Instead, the electronic expansion valve and valve plate are connected and sealed by brazing. Similarly, the solenoid valve eliminates the threaded connection between the valve plate and the valve plate, and the external and internal leakage sealing rings are also eliminated. Instead, the solenoid valve and valve plate are connected and sealed by brazing. This eliminates the need to control and ensure the dimensional accuracy of the sealing surface and the compression of the sealing ring. The process difficulty is greatly reduced, the outer boundary is smaller, the flow channel is more convenient, the structure is simpler, and the reliability is greatly improved.

[0011] Preferably, the pre-embedded brazing method includes processing a dedicated micron-level liquid storage structure micropore array and microgroove network structure on the interface to be welded on the valve plate by laser drilling, and pre-embedding solid flux powder on the structure. This structure, as a "precision ammunition depot" for the flux, is the core carrier for physically realizing the spatial positioning, dosage control and on-demand release of the flux. It transforms the originally external and discrete flux application process into an integrated and solidified functional structure inside the component. The micropore array solves the material softening temperature and cleanliness issues of welding different materials such as aluminum and stainless steel. Metal components that need to be sealed are permanently connected together by pre-embedded brazing. The weld itself forms a seal, which is absolutely sealed, with zero leakage, high structural strength, and reduces a large number of bolts used for installation and sealing, as well as a large number of inner and outer sealing rings and sealing rings for sealing sub-components. This greatly simplifies the complexity of the flux-side assembly and greatly simplifies the assembly process and assembly time of the production line.

[0012] Preferably, the valve plate, heat exchanger plate, electronic expansion valve, and solenoid valve are brazed directly in a vacuum furnace; uniform heating improves the efficiency and quality of brazing.

[0013] Preferably, the valve plate is made of common aluminum alloy material; this improves portability.

[0014] Preferably, the solid flux powder is selected from aluminum-based brazing filler metal BCu91Pag and fluoride or borate flux; this improves brazing performance, facilitates oxide film removal, and enhances wettability.

[0015] Compared with the prior art, the advantages of this utility model are as follows: the heat exchanger plate eliminates the flange head connection, sealing ring sealing and bolt fixing, and is connected and sealed by brazed pieces; the electronic expansion valve eliminates the valve plate connection thread fixing thread structure, and eliminates the external leakage sealing ring and internal leakage sealing ring structure, and replaces the electronic expansion valve and valve plate with brazed connection sealing; the solenoid valve eliminates the valve plate connection thread fixing structure, and eliminates the external leakage sealing ring and internal leakage sealing ring structure, and replaces the solenoid valve and valve plate with brazed connection sealing. There is no need to control and ensure the dimensional accuracy of the sealing surface, ensure the compression of the sealing ring, greatly reduce the process difficulty, the outer boundary is smaller, it is more convenient for local flow channels, the structure is simpler, and the reliability is greatly improved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0017] Figure 2 This is a partial isometric structural diagram of the connection between the valve plate and the electronic expansion valve, etc.

[0018] Figure 3 This is a structural diagram of the valve plate and valve port, etc.

[0019] Figure 4 This is an isometric structural diagram of the connection between the valve plate and the solenoid valve, etc.

[0020] The attached diagram is labeled as follows: 1. Valve plate; 2. Heat exchanger plate; 3. Electronic expansion valve; 4. Solenoid valve; 5. Valve port. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0022] Example 1

[0023] like Figures 1 to 4As shown, the present invention discloses a valve plate embedded brazing connection sub-component structure, including a valve plate 1 and a heat exchanger plate 2, with the heat exchanger plate 2 connected to the valve plate 1; it also includes an electronic expansion valve 3, a solenoid valve 4, and valve ports 5. A welding interface is provided on the outer wall of the valve plate 1, and multiple sets of valve ports 5 are provided on the valve plate 1. Multiple sets of electronic expansion valves 3 and multiple sets of solenoid valves 4 are provided on the valve plate 1. The multiple sets of electronic expansion valves 3 and multiple sets of solenoid valves 4 are connected to the multiple sets of valve ports 5 by pre-embedded brazing. The heat exchanger plate 2 is connected to the valve ports 5 by brazing tabs.

[0024] like Figure 3 As shown, the pre-embedded brazing method includes processing a special micron-level liquid storage structure micropore array and microgroove network structure on the interface to be welded on the valve plate 1 by laser drilling, and pre-embedding solid flux powder on the structure.

[0025] In this embodiment, the heat exchanger plate 2 eliminates the flange connection, sealing ring sealing, and bolt fixing, and instead uses a brazed connection for sealing. The electronic expansion valve 3 eliminates the valve plate connection thread fixing structure, and the external and internal leakage sealing ring structures are eliminated. Instead, the electronic expansion valve 3 and valve plate 1 are connected and sealed by brazing. The solenoid valve 4 eliminates the valve plate connection thread fixing structure, and the external and internal leakage sealing ring structures are eliminated. Instead, the solenoid valve 4 and valve plate 1 are connected and sealed by brazing. This eliminates the need to control and ensure the dimensional accuracy of the sealing surface and the amount of sealing ring compression, greatly reducing the process difficulty, making the outer boundary smaller, facilitating the local flow channel, simplifying the structure, and greatly improving reliability.

[0026] Example 2

[0027] Based on Example 1, such as Figure 1 As shown, the valve plate 1, heat exchanger plate 2, electronic expansion valve 3 and solenoid valve 4 are brazed by direct furnace vacuum welding;

[0028] like Figure 1 As shown, the valve plate 1 is made of commonly used aluminum alloy material;

[0029] like Figure 2 As shown, the solid flux powder is selected from aluminum-based solder BCu91Pag and fluoride or borate flux;

[0030] In this embodiment, the structure serves as a "precision ammunition depot" for the flux, acting as the core carrier for physically realizing the spatial positioning, dosage control, and on-demand release of the flux. It transforms the originally external and discrete flux application process into an integrated and solidified functional structure within the component. Through a micropore array, it addresses the material softening temperature and cleanliness issues of welding different materials such as aluminum and stainless steel. Metal components requiring sealing are permanently connected together through pre-embedded brazing, with the weld itself forming a seal that is absolutely airtight, leak-free, and has high structural strength. This significantly reduces the number of bolts used for installation and sealing, as well as the number of inner and outer sealing rings used for sealing sub-components. It greatly simplifies the complexity of the flux-side assembly, significantly reduces assembly time and process time on the production line, ensures uniform heating, and improves the efficiency and quality of brazing.

[0031] This utility model discloses a valve plate embedded brazed connection sub-component structure. During operation, the heat exchanger plate 2 eliminates the flange head docking, sealing ring sealing, and bolt fixing, and is connected and sealed by brazed pieces. The electronic expansion valve 3 eliminates the valve plate docking thread fixing structure, and the external leakage sealing ring and internal leakage sealing ring structure. Instead, the electronic expansion valve 3 and the valve plate 1 are connected and sealed by brazing. The solenoid valve 4 eliminates the valve plate docking thread fixing structure, and the external leakage sealing ring and internal leakage sealing ring structure. Instead, the solenoid valve 4 and the valve plate 1 are connected and sealed by brazing.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A valve plate embedded brazed connection sub-component structure, comprising a valve plate (1) and a heat exchanger plate (2), wherein the heat exchanger plate (2) is connected to the valve plate (1); characterized in that, It also includes an electronic expansion valve (3), a solenoid valve (4) and a valve port (5). A welding interface is provided on the outer wall of the valve plate (1). Multiple valve ports (5) are set on the valve plate (1). Multiple electronic expansion valves (3) and multiple solenoid valves (4) are set on the valve plate (1). Multiple electronic expansion valves (3) and multiple solenoid valves (4) are connected to multiple valve ports (5) by pre-embedded brazing. The heat exchanger plate (2) is connected to the valve ports (5) by brazing.

2. The valve plate embedded brazed connection sub-component structure as described in claim 1, characterized in that, The pre-embedded brazing method includes processing a special micron-level liquid storage structure micropore array and microgroove network structure by laser drilling on the interface to be welded on the valve plate (1), and pre-embedding solid flux powder on the structure.

3. The valve plate embedded brazed connection sub-component structure as described in claim 1, characterized in that, The valve plate (1), heat exchanger plate (2), electronic expansion valve (3) and solenoid valve (4) are brazed by direct furnace vacuum.

4. The valve plate embedded brazed connection sub-component structure as described in claim 1, characterized in that, The valve plate (1) is made of aluminum alloy.

5. The valve plate embedded brazed connection sub-component structure as described in claim 2, characterized in that, The solid flux powder is selected from aluminum-based solder BCu91Pag and fluoride or borate flux.

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