A waterside structure

Abstract

The utility model relates to the technical field of electric automobile, especially a water side structure which prevents the flow channel from leaking at the docking position, the water side manifold is composed of upper manifold, lower manifold and middle manifold, the water valve, water pump, temperature sensor, heat exchanger and expansion kettle are integrated by means of hot plate welding assembly and manufacturing process, the water side manifold and water valve are connected by bolts, the water side manifold and water valve are sealed by sealing gaskets, the sealing gaskets are clamped in the grooves in the water valve, the water valve is rotated by the controller to drive the rotation in the valve, the water side manifold and water pump are connected by self-tapping screws, and the middle part is sealed by radial sealing rings; small O sealing rings are arranged between the inlet of the water pump and the manifold, and large O sealing rings are arranged between the outlet of the water pump and the outside, the water side manifold and temperature sensor are fixed by clamping springs, and the expansion kettle and plate heat exchanger are fixed by bolts, the sealing rings adopt radial sealing mode, and O sealing rings are arranged between the products and the manifold.

Description

Technical Field

[0001] This utility model relates to the technical field of electric vehicles, and in particular to a water-side structure. Background Technology

[0002] Currently, the mainstream thermal management system for electric vehicles is the water-side integrated modular system. This system integrates numerous sub-components such as plastic manifolds, water valves, water pumps, and sensors, each with its own independent temperature control and piping system. While this reduces system integration and piping complexity, and improves energy efficiency, the manifolds themselves have numerous sealing dimensions, a relatively complex structure, and the difficulty in molding qualified plastic products.

[0003] The existing integrated structure of water-side systems has some problems: 1. Sealing issues of plastic manifolds and various components: Due to the integration of various components, the plastic parts themselves are concave and shrink, and they are connected by screws and sealed with rubber rings. The connection of the product itself and the compression of the sealing rings cause plastic deformation, sealing ring failure and leakage problems. 2. Water-side manifold performance issues: Currently, manifold materials include PP+glass fiber and nylon, with PP+glass fiber being more common. Nylon is more difficult to weld, but PP itself is difficult to meet in terms of high temperature resistance and deformation resistance. With increasingly stringent automotive testing regulations, higher temperature and time testing, higher comfort requirements, and noise and NVH tests on components such as water pumps are becoming increasingly difficult to achieve even when individual sub-components are qualified. This leads to amplification issues in water-side modules: currently, integrated water-side modules are finding it increasingly difficult to meet the requirements. 3. Plastic manifold structure issues: The water-side module itself fixes many sub-components, such as water pumps, water valves, chillers, LCC water temperature sensors, expansion tanks, etc., all of which need to be fixed on it. This requires strong manifold strength, small tolerances in sealing dimensions, and many locations. There are also high requirements for the flatness and roundness of the product seal. However, due to the limitations of the molding process of the plastic manifold itself, the product is bound to be deformed. It requires repeated mold repairs, and the product is also difficult to fully meet customer requirements. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a water-side structure.

[0005] This utility model discloses a water-side structure. The water-side manifold consists of an upper manifold, a lower manifold, and a middle manifold. Water valves, water pumps, temperature sensors, heat exchangers, and expansion tanks are integrated using a hot-plate welding assembly method and manufacturing process. The water-side manifold and water valves are connected by bolts, and a sealing gasket is used to seal between them. The gasket is inserted into a groove inside the water valve. The water valve rotates via a controller, causing internal rotation. The water-side manifold and water pump are connected by self-tapping screws, with a radial sealing ring in between. A small O-ring is located between the water pump inlet and the manifold, and a large O-ring is located between the water pump outlet and the outside. The water-side manifold and temperature sensor are fixed with snap rings, and the expansion tank and plate heat exchanger are fixed with bolts. The sealing rings use a radial sealing method, with the O-rings located between the product itself and the manifold. The water-side manifold consists of an upper manifold, a lower manifold, and a middle manifold. Water valves, water pumps, temperature sensors, heat exchangers, and expansion tanks are integrated using a hot-plate welding assembly method and manufacturing process. The water-side manifold and water valves are connected by bolts. A sealing gasket is used between the water-side manifold and the water valve to prevent leakage from both the inside and outside of the water valve's flow path. The gasket is secured within the groove of the water valve. By controlling the compression of the end face sealing ring within a reasonable range of 10%-35%, leakage from both the inside and outside of the water valve's flow path is prevented. The water valve is controlled by a controller that rotates the valve internally to switch between different modes. The water-side manifold and the water pump are secured with self-tapping screws and a radial sealing ring in between to prevent leakage from both the inside and outside of the water pump's flow path. A small O-ring is located between the water pump inlet and the manifold, and a large O-ring is located between the water pump outlet and the outside. By controlling the compression of the radial sealing ring within a reasonable range of 10%-35%, leakage from both the inside and outside of the water pump's flow path is prevented. The water-side manifold and temperature sensor are fixed with snap rings, and the expansion tank, plate heat exchanger, etc., are fixed with bolts. The sealing ring uses a radial sealing method to prevent leakage from both the inside and outside of the product's flow path. An O-ring is located between the product itself and the manifold. By controlling the compression of the radial sealing ring within a reasonable range of 10%-35%, leakage from the flow path at the connection point is prevented.

[0006] Compared with the prior art, the beneficial effects of this utility model are: optimizing the sealing structure at the water valve of the water-side manifold, greatly reducing the stress on the assembly surface, and improving the sealing effect. 1. The sealing area of ​​the assembly surface is expanded by 5mm from the inside and outside of the water valve sealing ring groove to form a sealing plane. The water-side manifold and water valve sealing ring are partially enlarged, instead of the traditional sealing of the entire plane. This reduces the controlled plane area, improves the overall accuracy of the sealing surface, and uses a non-uniform contour for control.

[0007] 2. The sealing surface protrudes by +0.2~-0.1mm relative to the insert plane, ensuring that the only point of contact between the water-side manifold and the water valve body is the contact between the bolt and the sealing ring. This greatly reduces the assembly stress between the insert bolts caused by the contact, reducing the assembly stress by an order of magnitude.

[0008] 3. The sealing surface area is thickened to 5mm to enhance the strength of the sealing structure and ensure that after assembly, the plastic product still has sufficient strength to support itself even after softening in a high-temperature environment, preventing stress-induced deformation after installation.

[0009] Optimize the structure near the water pump in the water-side manifold and optimize the outlet flow channel to smooth the pump outlet, reduce pump outlet flow resistance, and prevent liquid from impacting the flow channel walls: (1) Keep the outlet position always at the tangent position of the water pump to prevent a series of problems caused by air trapping in the water pump.

[0010] (2) The arc-shaped flow channel at the outlet of the water pump reduces the pressure drop to a certain extent and improves the system efficiency. A circular reinforcing rib is added to the back of the water pump to strengthen the fixing strength of the water pump and the surrounding water-side manifold. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] 1. Water-side manifold; 2. Water-based agent installation point; 3. Water temperature sensor; 4. Water temperature sensor mounting clip; 5. Water pump inner sealing ring; 6. Water pump outer sealing ring; 7. First water pump; 8. Second water pump; 9. Water pump automatic pin; 10. Five-way valve sealing ring; 11. Five-way water valve; 12. Mounting bolts. Detailed Implementation

[0013] 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. Example

[0014] This utility model discloses a water-side structure, in which the water-side manifold is composed of an upper manifold, a lower manifold, and a middle manifold. Water valves, water pumps, temperature sensors, heat exchangers, and expansion tanks are integrated through a hot-plate welding assembly method and manufacturing process. The water-side manifold and water valves are connected by bolts, and a sealing gasket is used to seal between them. The gasket is inserted into a groove inside the water valve. The water valve is rotated by a controller, causing the valve's internal components to rotate. The water-side manifold and water pump are connected by self-tapping screws, with a radial sealing ring in between. A small O-ring is located between the water pump inlet and the manifold, while a large O-ring is located between the water pump outlet and the outside. The water-side manifold and temperature sensor are fixed with snap rings, and the expansion tank and plate heat exchanger are fixed with bolts. The sealing rings use a radial sealing method, with the O-rings located between the product itself and the manifold.

[0015] In this embodiment, the water-side manifold consists of an upper manifold, a lower manifold, and a middle manifold. The water valve, water pump, temperature sensor, heat exchanger, and expansion tank are integrated using a hot-plate welding assembly method and manufacturing process. The water-side manifold and water valve are connected by bolts, and a sealing gasket is used to seal between them to prevent external or internal leakage in the water valve flow channel. The sealing gasket is secured within the groove of the water valve, and the compression of the end face sealing ring is controlled within a reasonable range of 10%-35% to prevent internal or external leakage in the water valve flow channel. The water valve is controlled by a controller that rotates the valve internally to switch between different modes. The water-side manifold and water pump are connected by self-tapping screws, with a central connection... Radial sealing rings prevent leakage both inside and outside the water pump flow channel; small O-rings are located between the water pump inlet and the manifold, while large O-rings are located between the water pump outlet and the outside. By controlling the compression of the radial sealing rings within a reasonable range of 10%-35%, leakage inside and outside the water pump flow channel is prevented. The water-side manifold and temperature sensor are fixed with snap rings, and the expansion tank, plate heat exchanger, etc., are fixed with bolts. The sealing rings adopt a radial sealing method to prevent leakage both inside and outside the product flow channel; O-rings are located between the product itself and the manifold, and by controlling the compression of the radial sealing rings within a reasonable range of 10%-35%, leakage at the connection point is prevented.

[0016] The main functions achieved by this utility model are: 1. Improve product sealing performance: By improving the product's structure, the tightening force of the sealing bolts is increased, the sealing strength at key locations is enhanced, and the compression of the sealing ring at the sealing location is always within a reasonable range, thereby improving the product's sealing performance. 2. Enhance product stress deformation and high-temperature deformation performance: Improve the structural strength of plastic parts and the layout of sub-components on the water side: Utilize reinforced structures near the water pump and the location of the water pump inlet and outlet to avoid amplified noise from the assembly. NVH is improved by adding special sealing structures at the LCC, chiiller, and five-way valve seals. This prevents deformation and collapse under high temperature and pressure within the manifold flow channel. 3. Reduce product mold complexity and minimize control dimensions of water-side manifolds: Currently, water-side manifolds have numerous assembly sub-components and sealing dimensions at various sealing positions, placing high demands on the flatness and roundness of the product seals. However, the molding process of plastic manifolds themselves limits the inevitable deformation of the products. Although there are pre-deformation processes in the molds, controlling product deformation remains difficult, resulting in a low product qualification rate. To address this issue, standard connectors are welded onto the large manifold using a secondary injection molding process, reducing repeated mold disassembly and repair for some sealing dimensions. The integrated module's plastic manifold, quick-connect water connectors, temperature sensors, and other sub-components are integrated through innovative assembly methods and manufacturing processes to enhance structural strength, improve the weld flatness of the plastic valve plate, and reduce the risk of system failure. 4. Improve product size requirements and material properties. This method involves improving the accuracy of mold dimensions and adding pre-deformation structures to special parts of the product. This will improve the accuracy of the sealing surfaces of plastic manifolds and plastic sub-components, improve plastic performance, and add plastic additives such as glass fiber and talc. However, improving product size accuracy and sealing surface flatness cannot solve the problem of plastic parts deforming during installation and testing. Changing plastic materials and adding plastic additives can easily lead to product welding difficulties and more process limitations.

[0017] 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 water-side structure, wherein the water-side manifold is composed of an upper manifold, a lower manifold, and a middle manifold, characterized in that, The water valve, water pump, temperature sensor, heat exchanger, and expansion tank are integrated through a hot plate welding assembly method and manufacturing process. The water-side manifold and water valve are connected by bolts, and a sealing gasket is used to seal between the water-side manifold and water valve. The sealing gasket is inserted into the groove inside the water valve. The water valve is rotated by the controller, which drives the internal rotation of the valve. The water-side manifold and water pump are connected by self-tapping screws, with a radial sealing ring in between. The small O-ring is between the water pump inlet and the manifold, and the large O-ring is between the water pump outlet and the outside. The water-side manifold and temperature sensor are fixed with snap rings, and the expansion tank and plate heat exchanger are fixed with bolts. The sealing ring adopts a radial sealing method, and the O-ring is between the product itself and the manifold.

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