Welding cooling water pipe for heat management of new energy automobile

Abstract

The utility model provides a new energy automobile heat management welding cooling water pipe, which comprises a quick-plug connector and a flow guide pipeline, the quick-plug connector is made of a PP (polypropylene) light-transmitting material, the flow guide pipeline is made of a TPV (thermoplastic vulcanizate) light-proof material, a braid layer is arranged in the pipe wall of the flow guide pipeline, an impermeable layer is arranged at a first sleeving end of the flow guide pipeline, and the impermeable layer is arranged at a second sleeving end of the flow guide pipeline. The first sleeving end is arranged in a first butt joint opening of the quick connector in a sleeved mode, and the outer side wall of the pipeline at the first sleeving end is fixedly connected with the inner side wall of the first butt joint opening in a sealed mode in a laser welding mode. The cooling water pipe can meet the use condition of an existing new energy automobile cooling system, compared with a traditional automobile cooling pipeline, the cooling water pipe is light in weight and convenient to assemble and operate, and then reasonable performance design of the cooling pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal management of new energy vehicles, in particular to a welding cooling water pipe for thermal management of new energy vehicles. Background Art

[0002] At present, the thermal management cooling pipelines of new energy vehicles still follow the technical route of traditional vehicles. Due to the existence of the engine, the application environment of the pipelines for cooling the engine is relatively harsh, such as high temperature and pressure. The materials of the cooling pipelines and joints of traditional vehicles are generally rubber and nylon, and the connection between the pipeline and the joint is made by a metal clamp. With the development of new energy vehicles and the widespread use of power batteries, the requirements for cooling pipelines have also been greatly reduced, and the temperature and pressure resistance requirements of the materials have been reduced. Then, after the requirements for the cooling system are reduced, the materials and accessories used in the existing technology will have some excess requirements in terms of performance. How to achieve a reasonable design of the performance of the cooling pipeline while meeting the requirements for the use of the cooling system is a technical problem that needs to be solved urgently. Utility Model Content

[0003] The purpose of the utility model is to provide a welded cooling water pipe for thermal management of new energy vehicles. The cooling water pipe can meet the use conditions of the existing new energy vehicle cooling system. At the same time, compared with traditional automobile cooling pipes, it is light in weight and easy to assemble, thereby realizing a reasonable design of the performance of the cooling pipe.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a welding cooling water pipe for thermal management of new energy vehicles, including a quick-plug connector and a guide pipe, the quick-plug connector is made of PP translucent material, the guide pipe is made of TPV opaque material, a braided layer is arranged in the pipe wall of the guide pipe, an anti-seepage layer is arranged at a first sleeve end of the guide pipe, the first sleeve end is sleeved in a first pair of interfaces of the quick-plug connector, and the outer side wall of the pipe at the first sleeve end and the inner side wall of the first pair of interfaces are sealed and fixedly connected by laser welding.

[0005] Preferably, the anti-seepage layer comprises a first annular MS silicone layer, and the first annular MS silicone layer is arranged on the annular side wall of the first sleeve end.

[0006] Furthermore, a sleeve conduit is provided in the first docking port, an annular docking groove is provided between the sleeve conduit and the inner side wall of the first docking port, and the first sleeve end is sleeved in the annular docking groove.

[0007] Furthermore, the outer side wall of the sleeve catheter is in contact with the inner side wall of the first sleeve end.

[0008] Furthermore, the anti-seepage layer further includes a second annular MS silicone layer, the second annular MS silicone layer is sleeved inside the first sleeve end port, and the first annular MS silicone layer and the second annular MS silicone layer are an integrated structure.

[0009] Furthermore, the outer side wall of the sleeve conduit is in contact with the inner side wall of the second annular MS silicone layer.

[0010] Furthermore, arc-shaped guiding slopes are provided on the inner edge of the first pair of interfaces and the outer edge of the sleeve conduit.

[0011] The beneficial effects of the utility model are:

[0012] 1) The quick-connect connector and the flow guide pipe in the utility model are sealed and fixedly connected by laser welding. Compared with the traditional cooling pipe which is manually assembled, it not only improves the convenience of assembly operation, but also can greatly reduce the labor cost.

[0013] 2) The quick-connect connector is made of PP translucent material and the flow guide pipe is made of TPV opaque material, so that the utility model can reduce the weight by 30% compared with the existing traditional pipes of the same length, thereby facilitating the lightweight design of the cooling pipe.

[0014] 3) Compared with the existing traditional cooling pipeline, the connection assembly components of the cooling pipeline in the utility model reduce the use of metal clamps, thereby helping to reduce costs.

[0015] 4) The anti-seepage layer can effectively prevent the cooling water flowing in the cooling pipeline from penetrating into the braided layer of the guide pipeline through the side of the guide pipeline, thereby improving the performance of the cooling pipeline.

[0016] 5) By utilizing the arc-shaped guide slope provided on the first interface and the guide sleeve, the guide pipeline and the quick-connect connector can be quickly and accurately connected to each other, thereby facilitating improving the laser welding operation efficiency of the quick-connect connector and the guide pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 some preferred embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2It is a structural schematic diagram of a first embodiment of combining an anti-seepage layer with a diversion pipeline;

[0020] Figure 3 It is a structural schematic diagram of a second embodiment of combining an anti-seepage layer with a diversion pipeline;

[0021] Figure 4 It is a schematic diagram of the overall structure of the quick-connect connector;

[0022] Figure 5 A longitudinal sectional view of a first embodiment of the utility model;

[0023] Figure 6 A longitudinal sectional view of a second embodiment of the utility model;

[0024] Figure 7 for Figure 5 Enlarged view of point A in the middle;

[0025] Figure 8 for Figure 6 Enlarged view of point B in the middle;

[0026] In the figure: 1 quick-insert connector, 11 first docking interface, 12 sleeve conduit, 13 arc-shaped guide slope, 14 annular docking slot, 2 guide pipeline, 21 first docking end, 22 braided layer, 31 first annular MS silicone layer, 32 second annular MS silicone layer, 4 welding fusion connection layer. DETAILED DESCRIPTION

[0027] The following will be combined with specific embodiments and attached Figure 1-8 , the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the preferred embodiments of the utility model, not all of the embodiments. Those skilled in the art can make similar modifications without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] The technical principle of laser welding of plastic materials is: the laser beam penetrates the upper transmissive component and irradiates the lower plastic component that absorbs the laser. The laser energy is absorbed by the dye or additive particles in the absorbing component and converted into heat, melting the absorbing component. Through heat conduction, the heat is transferred to the upper transmissive component to achieve the melting of the upper component. The joints between the absorbing component and the upper component are melted, thereby achieving fusion welding of the absorbing component and the upper component.

[0029] The utility model provides a welding cooling water pipe for thermal management of new energy vehicles (such as Figure 1As shown), it includes a quick-connect connector 1 and a guide pipe 2. The quick-connect connector 1 is made of PP light-transmitting material, and the guide pipe 2 is made of TPV opaque material. When the quick-connect connector 1 and the guide pipe 2 are welded by a laser welding process, the quick-connect connector 1 is a transmission component that can be penetrated by the laser, and the guide pipe 2 is an absorption component that cannot be penetrated by the laser. A braided layer 22 is provided in the pipe wall of the guide pipe 2, and the braided layer 22 can improve the compressive strength of the guide pipe 2. A first sleeve end 21 of the guide pipe 2 is provided. The anti-seepage layer is provided. In actual application, the anti-seepage layer is used to achieve effective sealing of the annular end face of the first sleeve end 21 of the guide pipe 2, thereby effectively preventing the cooling water in the cooling water pipe from penetrating from the annular end face into the braided layer 22, thereby improving the performance of the guide pipe 22, and at the same time, it is also beneficial to improve the overall performance of the utility model; the first sleeve end 21 is sleeved in a first pair of interfaces 11 of the quick-connect connector 1, and the outer wall of the pipe at the first sleeve end 21 and the inner wall of the first pair of interfaces 11 are connected. The side wall is sealed and fixedly connected by laser welding. Specifically, after the first sleeve end 21 is stably sleeved in the first docking port 11, the laser welding machine is used to weld and fix the first sleeve end 21 and the first docking port 11. The laser beam is absorbed by the outer wall of the first sleeve end 21 through the tube wall of the first docking port 11, and then the outer wall of the first sleeve end 21 is heated and melted. At the same time, the inner wall area corresponding to the melting zone of the first docking port 11 and the first sleeve end 21 is also heated and melted synchronously under the action of heat transfer, and then a welding molten connection layer 4 is formed between the first docking port 11 and the first sleeve end 21. When the welding molten connection layer 4 is cooled and solidified, the sealed and fixed connection between the first docking port 11 and the first sleeve end 21 is achieved, and then the sealed and fixed connection between the quick-plug connector 1 and the guide pipe 2 is completed; the quick-plug connector 1 and the guide pipe 2 are sealed and fixedly connected by laser welding. Compared with the traditional manual assembly of cooling pipes, it not only improves the convenience of assembly operation, but also can greatly reduce labor costs. Furthermore, the quick-connect connector 1 and the guide pipe 2 are welded by laser technology, which reduces the use of metal clamps compared to the existing cooling pipe connection method, thereby reducing the processing cost of the utility model and achieving weight reduction.

[0030] The existing guide pipe is made of EPDM plus a braided layer. The guide pipe 2 in the utility model is made of TPV plus a braided layer. The density of EPDM material is 1.2g / cm 3 , while the density of TPV material is 0.96g / cm 3 , so that the guide pipe made of TPV material is 20% lighter than the guide pipe made of EPDM material under the same volume; further, the material of the quick-connect connector in the prior art is PA66-GF30, and its density is 1.37g / cm 3The material of the quick-plug connector 1 of the present invention is PPGF35, and its density is 1.17g / cm 3 , so that the quick-connect connector 1 in the utility model is 15% lighter than the quick-connect connector in the prior art under the same volume. The quick-connect connector 1 and the guide pipe 2 achieve weight reduction under the condition of meeting the thermal management requirements of new energy vehicles, thereby improving the performance of the utility model in terms of weight. In the actual laser welding process, the laser beam can generate a high temperature of 100°C to 250°C at the joint between the inner wall of the first interface 11 and the outer wall of the first docking end 21, so that the first interface 11 and the first docking end 21 reach a molten state, thereby welding the two materials together.

[0031] On the basis of the above embodiments, a specific implementation method of the first specific embodiment of the anti-seepage layer is as follows: the anti-seepage layer includes a first annular MS silicone layer 31, and the first annular MS silicone layer 31 is arranged on the annular side wall of the first sleeve end 21. The first annular MS silicone layer 31 has a waterproof effect, thereby effectively preventing cooling water from penetrating from the annular side wall of the first sleeve end 21 into the braided layer 22 in the guide pipe 2.

[0032] Furthermore, in order to facilitate the smooth socketing and locking of the guide pipe 2 and the first docking port 11, a socket conduit 12 is arranged in the first docking port 11, and an arc-shaped guide slope 13 is arranged on the inner edge of the first docking port 11 and the outer edge of the socket conduit 12. The arc-shaped guide slope 13 has a guiding effect on the movement of the first docking end 21. An annular docking groove 14 is arranged between the socket conduit 12 and the inner side wall of the first docking port 11. The first socket end 21 is sleeved in the annular docking groove 14, and the first socket end 21 is clamped in the annular docking groove 14, which is beneficial to improving the connection stability between the guide pipe 2 and the quick-plug connector 1. In order to further improve the connection stability between the guide pipe 2 and the quick-plug connector 1, the outer side wall of the socket conduit 12 is fitted with the inner side wall of the first socket end 21.

[0033] The specific implementation of the second specific embodiment of the anti-seepage layer is as follows: the anti-seepage layer also includes a second annular MS silicone layer 32, the second annular MS silicone layer 32 is sleeved inside the port of the first sleeve end 21, and the first annular MS silicone layer 31 and the second annular MS silicone layer 32 are an integrated structure. Furthermore, the outer wall of the sleeve conduit 12 fits with the inner wall of the second annular MS silicone layer 32, and the second annular MS silicone layer 32 is clamped between the outer wall of the sleeve conduit 12 and the inner wall of the first docking end 21, which can effectively prevent cooling water from entering the annular side wall of the first docking end 21 through the gap between the sleeve conduit 2 and the first docking end 21, thereby improving the anti-seepage effect of the anti-seepage layer.

[0034] In the present utility model, "upper", "lower", "front", "back", "left" and "right" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0035] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0036] The above description in combination with the accompanying drawings has detailed the preferred implementation modes and embodiments of the utility model, but the utility model is not limited to the above implementation modes and embodiments. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the concept of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A welding cooling water pipe for thermal management of new energy vehicles, characterized in that: It includes a quick-connect connector and a guide pipe, the quick-connect connector is made of PP translucent material, the guide pipe is made of TPV opaque material, a braided layer is arranged in the pipe wall of the guide pipe, an anti-seepage layer is arranged at a first sleeve end of the guide pipe, the first sleeve end is sleeved in a first pair of interfaces of the quick-connect connector, and the outer wall of the pipe at the first sleeve end and the inner wall of the first pair of interfaces are sealed and fixedly connected by laser welding.

2. The welding cooling water pipe for thermal management of new energy vehicles according to claim 1 is characterized in that: The anti-seepage layer includes a first annular MS silicone layer, and the first annular MS silicone layer is arranged on the annular side wall of the first sleeve end.

3. A welding cooling water pipe for thermal management of new energy vehicles according to claim 2, characterized in that A sleeve conduit is arranged in the first docking port, an annular docking groove is arranged between the sleeve conduit and the inner side wall of the first docking port, and the first sleeve end is sleeved in the annular docking groove.

4. The welding cooling water pipe for thermal management of new energy vehicles according to claim 3 is characterized in that: The outer side wall of the sleeve conduit is in contact with the inner side wall of the first sleeve end.

5. The welding cooling water pipe for thermal management of new energy vehicles according to claim 3 is characterized in that: The anti-seepage layer further includes a second annular MS silicone layer, which is sleeved inside the first sleeve end port, and the first annular MS silicone layer and the second annular MS silicone layer are an integrated structure.

6. The welding cooling water pipe for thermal management of new energy vehicles according to claim 5 is characterized in that: The outer side wall of the sleeve conduit is in contact with the inner side wall of the second annular MS silicone layer.

7. The welding cooling water pipe for thermal management of new energy vehicles according to claim 3 is characterized in that: Arc-shaped guiding slopes are arranged on the inner edge of the first pair of interfaces and the outer edge of the sleeve-connected conduit.

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