CN113054292A

CN113054292A - Joint, liquid cooling pipe group and processing joint device

Info

Publication number: CN113054292A
Application number: CN202110305654.5A
Authority: CN
Inventors: 王林; 张宝鑫; 陈子昂; 张灯; 武文杰
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-06-29

Abstract

The invention discloses a connector, a liquid cooling pipe set and a processing connector device. Through the access & exit coolant liquid of cominging in and going out, two at least interfaces can be connected with the liquid cooling pipe, improve and cool off electric core through a root canal connection among the prior art, because length overlength leads to being close to the unable effectively refrigerated problem of electric core of play water piping part, set up the joint of advancing more, can cool off through connecting a plurality of root canals, help reducing the length of every root canal, make electric core everywhere can obtain even cooling, the orientation that sets up two at least interfaces is different, can be used for in various battery module in a flexible way, and further make among the battery module everywhere electric core obtain even effectual cooling.

Description

Joint, liquid cooling pipe group and processing joint device

Technical Field

The invention relates to the technical field of automobile battery thermal management, in particular to a connector, a liquid cooling pipe set and a connector processing device.

Background

The use of conventional fuel-oil vehicles not only pollutes the environment, but also aggravates the consumption of conventional fossil fuels. Electric vehicles have become one of the methods to improve the above two problems. The performance and the service life of the lithium ion battery serving as a power source of the electric automobile directly influence the service performance and the service life of the automobile. The performance and the service life of the lithium ion battery are greatly influenced by the working temperature, and the performance and the service life of the lithium ion battery are reduced by overhigh and overlow temperature. A suitable thermal management system is therefore required to ensure that the battery operates at the appropriate temperature. For a high-energy battery pack, the battery pack needs to be controlled by a liquid cooling system. For a battery pack with a large number of accumulated battery cores, when the liquid cooling pipe adopted in the prior art is used for battery heat dissipation, the battery cores close to the water outlet pipe can not be effectively cooled.

Disclosure of Invention

The invention mainly aims to provide a joint, a liquid cooling pipe set and a processing joint device, and aims to solve the problem that a battery cell cannot be effectively cooled due to a traditional liquid cooling system.

In order to achieve the purpose, the connector provided by the invention comprises a main body, wherein a cavity is formed in the main body, an inlet and an outlet and at least two interfaces are formed in the peripheral wall of the main body, the inlet and the outlet and the interfaces are communicated with the cavity, and the orientations of the at least two interfaces are arranged in different directions.

Optionally, each interface is provided with a flange, and the flange extends from the edge of the interface to the center of the interface and then bends and extends into the cavity.

Optionally, the flange has a bending section extending towards the cavity, and the length of the bending section is 1-3 mm.

Optionally, the flange has a bending section extending toward the cavity, and the bending section gradually inclines toward the center of the interface from outside to inside.

Optionally, both ends of the joint main body are provided with openings communicated with the cavity, and the joint further comprises two end covers hermetically connected to the openings.

In addition, in order to achieve the above purpose, the present invention further provides a liquid cooling pipe set, wherein the liquid cooling pipe set comprises two joints as described above, and the two joints are arranged at intervals;

the two connecting pipes are in one-to-one correspondence with the at least two interfaces on each joint, each connecting pipe is arranged between the two joints, and two ends of each connecting pipe are respectively connected with the corresponding interfaces on the two joints;

wherein, one of the inlet and outlet of the two connectors is used for accessing external water, and the other inlet and outlet is used for discharging water.

Optionally, the shape of the interface is arranged in an elongated shape, and the cross-sectional shape of the connecting pipe is matched with the shape of the interface.

Optionally, the connecting pipe extends in a wavy manner along the length direction of the connecting pipe.

In addition, in order to achieve the above object, the present invention further provides a joint processing device, wherein the joint is the above joint, two ends of the joint main body are both provided with openings communicating with the cavity, and the joint further comprises two end covers hermetically connected to the openings;

the processing joint device comprises:

the base is provided with a processing area, and the processing area is used for installing the joint;

the outer peripheral wall of the mandrel is provided with a forming surface, and the forming surface is provided with at least two grooves; and the number of the first and second groups,

and each stamping die is close to and far away from the groove, and when the stamping die is close to the groove, the stamping die and the groove on the forming surface stamp together to form the interface.

Optionally, the mandrel includes at least two mandrel monomers, the two mandrel monomers have moving strokes that are close to each other and are away from each other along the length extending direction of the two mandrel monomers, a movable connecting surface that is connected with each other is arranged between the mandrel monomers, the movable connecting surface is wedge-shaped along the length extending direction of the mandrel, and one side of each mandrel monomer that faces away from the movable connecting surface is provided with a groove.

According to the technical scheme, the connector main body is arranged to form the cavity, the inlet and the outlet and the at least two interfaces are arranged on the peripheral wall and communicated with the cavity, the inlet and the outlet are used for inputting and outputting cooled liquid, the at least two interfaces can be connected with the liquid cooling pipe, the problem that the battery cell close to the water outlet pipe part cannot be effectively cooled due to overlong length in the prior art is solved, the connector with one inlet and multiple outlets is arranged, the cooling can be performed by connecting multiple pipes, the length of each pipe can be reduced, the battery cell can be uniformly cooled everywhere, the at least two interfaces are arranged in different directions, the connector can be flexibly used in various battery modules, and the battery cell in each battery module can be uniformly and effectively cooled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of one embodiment of a fitting provided in accordance with the present invention;

FIG. 2 is a top view of an embodiment of a liquid cooling tube set provided by the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic perspective view of one embodiment of a mandrel provided in accordance with the present invention;

FIG. 5 is an exploded view of FIG. 4;

fig. 6 is a schematic perspective view of an embodiment of a stamping die provided in the present invention;

FIG. 7 is a top view of one embodiment of a welding tool provided by the present disclosure;

fig. 8 is a schematic view of the installation of the liquid cooling pipe set and the welding tool.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the above, the present invention provides a joint, and fig. 1 is an embodiment of the joint according to the present invention. Referring to fig. 1, the connector 100 includes a main body 110, a cavity 120 is formed in the main body 110, an inlet 130 and at least two ports 140 are formed on an outer peripheral wall of the main body 110, the inlet 130 and the ports 140 are both communicated with the cavity 120, and at least two of the ports 140 are arranged in different directions.

Through setting up the inside vacuole 120 that forms of joint main part 110, and set up access & exit 130 and two at least interfaces 140 on the perisporium and communicate with cavity 120, access & exit 130 is used for the refrigerated liquid of discrepancy, two at least interfaces 140 can be connected with the liquid cooling pipe, improve and cool off electric core through a root canal connection among the prior art, because length overlength leads to being close to the unable effectively refrigerated problem of electric core of play water piping portion, through setting up one and advancing many joints 100, can cool off through connecting many roots of tubes, help reducing the length of every root canal, make electric core everywhere obtain even cooling, the orientation that sets up two at least interfaces 140 is different, can be used for in various battery module in a flexible way, and further make electric core everywhere in the battery module obtain even effectual cooling.

Furthermore, each interface 140 is provided with a flange 150, and the flange 150 extends from the edge of the interface 140 to the center of the interface 140 and then bends and extends into the cavity 120. Through setting up the turn-ups 150 that extends to cavity 120 internal bending after the border to interface 140 of interface 140 extends, fixed more firm when helping interface 140 and liquid cooling pipe to be connected, and convenient and liquid cooling pipe's welding or bonding.

Further, the flange 150 has a bending section 151 bending and extending towards the inside of the cavity 120, and the length of the bending section 151 is 1-3 mm. The length of the bending section 151 with the length of 1-3mm is beneficial to ensuring the welding strength, wherein the welding strength or the connection fixing effect is good and the material is saved when the length of 2mm is 2 mm.

Further, the flange 150 has a bending section 151 extending toward the inside of the cavity 120, and the bending section 151 gradually inclines toward the center of the interface 140 from the outside to the inside. Bending section 151 through setting up turn-ups 150 is the central direction slope towards interface 140 gradually from outside to inside, can play spacing and fixed effect to the liquid cooling pipe when can making the liquid cooling pipe insert interface 140, and the liquid cooling pipe is by outside to when interpolation is to interface 140, turn-ups 150 of accessible slope is by outside to inside spacing fixed gradually.

Further, both ends of the joint main body 110 are provided with openings 160 communicating with the cavity 120, and the joint 100 further includes two end caps 170 hermetically connected to the openings 160. The processing of the cavity 120 or the port 140 is facilitated by providing the opening 160 connecting the two ends of the main body 110 to the cavity 120, in this embodiment, the main body 110 is a square hollow tube, the port 140 and the inlet and outlet 130 are arranged on four sides of the square hollow tube, i.e., one inlet and outlet 130, and the three ports 140 are one-inlet-three-outlet connectors. End caps 170 are provided to seal the openings 160 at both ends to help prevent coolant from being lost through the openings 160 at both ends of the joint 100 when in use.

In addition, referring to fig. 2 to 3, the present invention further provides a liquid-cooled tube set 200, wherein the liquid-cooled tube set 200 comprises two connectors 100 and at least two connecting tubes 210, the two connectors 100 are spaced apart, and the connector 100 is the connector 100 according to any one of claims 1 to 5; at least two connecting pipes 210 are in one-to-one correspondence with the at least two interfaces 140 on each joint 100, each connecting pipe 210 is arranged between the two joints 100, and two ends of each connecting pipe 210 are respectively connected with the corresponding interfaces 140 on the two joints 100; one of the inlet and outlet 130 of the two connectors 100 is used for receiving external water, and the other inlet and outlet 130 is used for discharging water.

Set up two through both ends interval and connect 100, set up connecting pipe 210 between two joints 100, the quantity of connecting pipe 210 is unanimous with the quantity that connects interface 140 on 100, can form the liquid cooling management system of a business turn over, and simultaneously, through setting up many connecting pipes 210, compare and cool off through a connecting pipe 210 among the prior art, great length that has shortened connecting pipe 210, the efficiency of battery cooling has been improved, and the volume of liquid cooling management system has been reduced. The positions of the connectors 140 connected to the two ends of each connection pipe 210 on the connector 100 are the same, that is, at least two connection pipes 210 correspond to at least two connectors 140 on each connector 100 one by one, so that the connection pipes 210 can be prevented from being crossed and wound, and meanwhile, the connection pipes 210 can be arranged at intervals to cool the batteries more uniformly. In the two connectors 100, one of the inlet and outlet ports 130 is used for receiving external water, and the other of the inlet and outlet ports 130 is used for discharging water, which may also be cooling fluid, so that the fluid inside the liquid cooling pipe set 200 flows through the inlet and outlet ports, thereby facilitating the rapid cooling of the battery.

Further, the shape of the interface 140 is elongated, and the cross-sectional shape of the connection tube 210 is matched with the shape of the interface 140. Through the shape that sets up interface 140 being the setting of lengthwise type, connecting pipe 210 is connected with interface 140, and its shape and interface 140's shape looks adaptation, also the cross section of connecting pipe 210 is the flat pipe of lengthwise type, so, can improve the area of contact of connecting pipe 210 and electric core, and then improve cooling rate. Here, the connecting pipe 210 may be formed in other shapes, not limited to the elongated flat pipe.

Further, the connection pipe 210 extends in a wave shape along the length direction thereof. Be wavy extension through setting up connecting pipe 210, help improving the area of contact of connecting pipe 210 and electric core, improve the cooling rate of electric core.

In addition, referring to fig. 4 and fig. 6, the present invention further provides an apparatus for processing the joint 100, wherein the joint 100 is the joint 100 as described above, in addition, both ends of the joint body 110 are provided with openings 160 communicating with the cavity 120, and the joint 100 further includes two end caps 170 hermetically connected to the openings 160; the joint 100 machining device comprises a base, a core rod 300 and at least two stamping dies 400, wherein a machining area is arranged on the base and used for installing the joint 100; a forming surface is arranged on the outer peripheral wall of the mandrel 300, and at least two grooves 330 are formed in the forming surface; and each stamping die 400 is arranged close to and far away from the groove 330, and when the stamping die 400 is close to the groove 330, the stamping die and the groove 330 on the forming surface stamp together to form the interface 140.

The mandrel 300 is inserted into the cavity 120 of the joint 100 and used for supporting the joint main body 110, deformation of the joint main body 110 is prevented in the stamping process, at least two grooves 330 are formed in the forming surface of the mandrel 300, the interface 140 is formed by the stamping die 400 and the grooves 330 in a matched stamping mode, and the flanging 150 on the interface 140 is formed in the stamping process.

Further, as shown in fig. 5, the mandrel 300 includes at least two mandrel single bodies 310, the two mandrel single bodies 310 have moving strokes that are close to each other and away from each other along the length extension direction thereof, a moving connection surface 320 connected to each other is provided between the mandrel single bodies 310, the moving connection surface 320 is wedge-shaped along the length extension direction of the mandrel 300, and a groove 330 is provided on a side of each mandrel single body 310 facing away from the moving connection surface 320.

By arranging at least two mandrel single bodies 310, the mandrel single bodies 310 are connected in a matching manner through the wedge-shaped connecting surfaces 320 arranged in the length extending direction, so that the mandrel 300 can be inserted into the cavity 120 of the joint 100, and can be reliably connected through the wedge-shaped connecting surfaces 320, and meanwhile, the mandrel single bodies can be easily detached and separated and can be easily taken out of the cavity 120. In this embodiment, the mandrel 300 includes two mandrel single bodies 310, each mandrel single body 310 has two opposite surfaces, one of the two surfaces is a wedge-shaped connecting surface 320, the other surface is a molding surface facing away from the wedge-shaped connecting surface 320, a groove 330 is formed on the molding surface, the wedge-shaped connecting surfaces 320 on the two mandrel single bodies 310 extend along the length direction of the mandrel 300, before the stamping of the stamping die 400, the two mandrel single bodies 310 are respectively inserted into the cavity 120 from the openings 160 at the two ends of the joint 100, so that the wedge-shaped connecting surfaces 320 on the two mandrel single bodies 310 are connected in a matching manner, and at this time, the two mandrel single bodies are close to the groove 330 through the stamping die 400, and are stamped.

In this embodiment, the specific processing method of the liquid cooling tube group 200 is as follows:

inserting a mandrel 300 into the cavity 120 of the fitting 100 from the openings 160 at both ends of the fitting 100;

two sides of the joint 100, which need to be flanged 150, are stamped simultaneously by using two stamping dies 400;

the core rod 300 is drawn out and the angle is changed to the direction that the groove 330 faces to another flanging 150, and then the core rod is inserted into the joint 100 again, and the stamping die 400 is used for stamping again;

installing the connecting pipe 210 and the interface 140 on the joint 100;

welding the installation place of the connection pipe 210 and the joint 100;

and insulating the surface of the welded liquid cooling pipe group 200, wherein the plastic spraying thickness is 100-120 mu m.

In the present embodiment, the joint 100 is made of Al3003 — 4343 composite pipe material, the connecting pipe 210 is made of Al9153 pipe material, and the mandrel 300 and the stamping die 400 are made of Cr12 steel. The present invention is not limited to the material of the joint 100 and the connecting pipe 210 being the material in this embodiment, but may be other materials, but the material of the joint 100 and the connecting pipe 210 cannot be different materials, for example, the material of the joint 100 is copper, and the material of the flat pipe is aluminum. The foremost end of the stamping die 400 is designed to be trapezoidal, which on one hand helps guiding, so that the stamping die 400 is easier to match with the groove 330 to form the interface 140, and on the other hand, the bending section 151 capable of stamping the flange 150 is inclined gradually toward the center of the interface 140 from outside to inside, thereby limiting and fixing the insertion of the connecting pipe 210.

In the present embodiment, the connection pipe 210 and the joint 100 are welded by brazing, but the connection pipe 210 and the joint 100 may be connected by gluing or other methods. The air tightness of the liquid cooling pipe set 200 formed by connecting the joint 100 and the connecting pipe 210 requires that the leakage amount is not more than 10Pa/s under the air pressure of 0.25 MPa; the explosion pressure is not lower than 2 MPa; the cleanliness in the connecting pipe 210 meets the QC/T572 standard; the pull-out force and the lateral force of the joint 100 should be no less than 100N; the flow resistance in the connection pipe 210 is good without clogging. In the invention, the insulation treatment of the surface of the liquid cooling pipe group 200 is not limited to plastic spraying, but other modes can be adopted, but the insulation property can meet the requirement that the insulation resistance value is more than 500 MOmega under the voltage of more than 500V, and the flame retardant property can reach the UL 94-V0 grade. The thickness of the sprayed plastic is not limited to the thickness in the embodiment, and the thickness can be reset according to the process and the actual requirements, but the insulation requirement and the flame retardant requirement are met. The surface of the liquid cooling pipe set 200 after plastic spraying should have no defects such as mottling, shrinkage, dent, pinhole, cracking, peeling, roughness, coarse particles, bottom exposure, scratch, foreign matter inclusion, hanging flow, powder accumulation and the like.

Further, referring to fig. 7 and 8, before the step of welding the connection pipe 210 and the joint 100 at the installation position, the connection pipe is fixed by using a welding tool 500.

The welding tool 500 controls the size and the shape of the connecting pipe 210, and prevents the connecting pipe 210 from being unqualified due to excessive deformation in the high-temperature welding process. Before welding, the connection pipe 210 and the joint 100 are mounted and fixed by using the welding tool 500. The whole frame of the welding tool 500 is made of stainless steel, and the part of the fixed connecting pipe 210 for limiting is made of graphite, so that the connecting pipe 210 and the welding tool 500 are prevented from being welded together in the welding process. In this embodiment, the width of the outer groove 330 of the graphite part is 1mm wider than the same position of the connection pipe 210. In the present invention, the size and shape of the welding fixture 500 are not limited to those in the present embodiment, and may be designed according to the specific size and shape of the flat tube assembly. The material of the welding tool 500 is not limited to the material in the embodiment, and other materials may be used, but it is necessary to ensure that the material of the tool is not welded to the flat tube at high temperature. The width of the wave-shaped groove 330 of the welding tool 500 is not limited to the width in the embodiment, and a new width can be set according to the actual model requirement and the accuracy requirement, but the width must meet the requirement of the actual size. In addition, at the critical dimension position, the size of the groove 330 of the welding fixture 500 can be locally adjusted to meet the actual production requirement.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a joint, its characterized in that, includes the main part, the inside cavity that is formed with of main part, access & exit and two at least interfaces have been seted up on the periphery wall of main part, access & exit and interface all with the cavity intercommunication, at least two the orientation of interface is different to be set up.

2. The connector of claim 1, wherein each of the connectors has a flange extending from the edge of the connector to the center of the connector and then bending and extending into the cavity.

3. The connector of claim 2, wherein the flange has a bending section extending towards the cavity and having a length of 1-3 mm.

4. The connector of claim 2, wherein the flange has a bending section extending in a bending manner toward the inside of the cavity, and the bending section is gradually inclined toward the center of the connector from the outside to the inside.

5. The fitting of claim 1 wherein said fitting body has openings at each end communicating with said cavity, and further comprising two end caps sealingly attached to said openings.

6. A liquid cooled tube set, comprising:

two connectors, two of which are arranged at a distance, the connectors being as defined in any one of claims 1 to 5;

7. The tube set of claim 6, wherein the interface is elongated in shape, and wherein the cross-sectional shape of the connection tube is adapted to the shape of the interface.

8. The tube set of claim 6, wherein said connecting tube extends in a wave-like manner along its length.

9. Machining the joint device according to any one of claims 1 to 4, wherein the joint body is provided with openings communicating with the cavity at both ends thereof, and the joint further comprises two end caps hermetically connected to the openings;

the processing joint device comprises:

10. The apparatus according to claim 9, wherein the mandrel comprises at least two mandrel segments, the two mandrel segments have moving strokes toward and away from each other along the length of the mandrel segments, the mandrel segments have moving joint surfaces connected to each other, the moving joint surfaces are wedge-shaped along the length of the mandrel, and a groove is formed on a side of each of the mandrel segments facing away from the moving joint surfaces.