Battery pack cooling pipe

Abstract

The utility model relates to the technical field of new energy automobile accessories, in particular to a battery pack cooling pipe which comprises a cooling pipe body, a quick-insertion straight connector and a quick-insertion 90-degree connector, and the quick-insertion straight connector and the quick-insertion 90-degree connector are arranged at the two ends of the cooling pipe body respectively and used for being connected with a cooling liquid circulation system. The battery pack cooling pipe has the advantages that the problem that auxiliary tools need to be used when the battery pack cooling pipe is connected with components in a cooling liquid circulation system is solved, and the effect of quick connection of pipe fittings is facilitated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of new energy automobile accessories, and in particular to a battery pack cooling pipe. BACKGROUND

[0002] The battery pack cooling pipe is a key component for battery thermal management in electric vehicles or energy storage systems, and mainly functions to regulate battery temperature to ensure that the battery pack can operate within an optimal working range.

[0003] In the related art, the surface of the cooling pipe is usually in close contact with the surface of the battery module or embedded in the module, and good contact is ensured by using heat-conducting materials such as heat-conducting glue or heat-conducting pads. The end of the cooling pipe needs to be connected with the cooling liquid pump, the cooling liquid tank, the heat exchanger and other components in the cooling liquid circulation system, so as to take away or provide heat through the circulation system to regulate the battery temperature.

[0004] In view of the above related art, the end of the cooling pipe usually uses metal joints, flanges and other connecting parts to ensure close connection with other components. However, the related connecting parts need to use tools such as circlip pliers to assist in the installation of the pipe, which is relatively cumbersome to operate. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the problem that auxiliary tools are needed when connecting the battery pack cooling pipe with the components in the cooling liquid circulation system, and to facilitate quick connection of the pipe, the application provides a battery pack cooling pipe.

[0006] The battery pack cooling pipe provided by the application adopts the following technical scheme:

[0007] A battery pack cooling pipe, comprising a cooling pipe body, a quick plug direct head and a quick plug 90° joint, the quick plug direct head and the quick plug 90° joint are respectively arranged at both ends of the cooling pipe body and used for connecting with a cooling liquid circulation system.

[0008] By adopting the above technical scheme, the quick plug joint design makes the connection of the cooling pipe not need to use auxiliary tools such as circlip pliers, and the operation is more convenient, which saves installation time and labor cost. The combination of the quick plug direct head and the quick plug 90° joint provides more installation flexibility, which can adapt to different space layouts and connection requirements.

[0009] Further, the quick plug direct head comprises a connecting head and a locking part, the connecting head has a plug-in part for inserting into the cooling pipe body and a quick plug part for inserting and connecting the cooling circulation system, and the plug-in part and the quick plug part are coaxially arranged and integrally connected.

[0010] By adopting the technical scheme, the connector has a plug-in part for inserting the cooling pipe body, facilitating the connection of the cooling pipe body and the quick plug connector, and only needs to be inserted into the plug-in part to quickly realize the preliminary connection of the cooling pipe body and the quick plug connector. The quick plug connector is provided with a quick plug part for inserting the locking part and connecting the cooling circulation system, so that the quick plug connector can be quickly connected with other components in the cooling circulation system, without complex operation and additional tools, and can realize quick docking with the cooling liquid pump, the cooling liquid tank and the heat exchanger and other components, thereby improving the installation efficiency of the whole battery pack cooling system.

[0011] Further, the locking part has a connecting half ring and two first clamping claws symmetrically arranged at two ends of the connecting half ring, the quick plug part is provided with an insertion slot for inserting the first clamping claw and a locking slot for the first clamping claw to extend and lock on the side wall, and the insertion slot and the locking slot are oppositely arranged on two sides of the quick plug part.

[0012] By adopting the technical scheme, the locking part has two first clamping claws symmetrically arranged at two ends of the connecting half ring, and only needs to be inserted into the insertion slot on the side wall of the quick plug part when connecting the cooling pipe and the components of the cooling liquid circulation system. Due to the guiding effect of the insertion slot, the first clamping claw can smoothly enter the inside of the quick plug part, and then extend and lock from the locking slot. The whole process does not need to use additional tools, and the installation speed is improved. The locking mode utilizes the mutual cooperation of the mechanical structure, and after the first clamping claw extends from the locking slot, the quick plug connector and the pipe of the cooling liquid circulation system are firmly connected together, ensuring the reliability and stability of the connection of the cooling pipe and the cooling liquid circulation system.

[0013] Further, two first clamping claws are provided with step surfaces for clamping the quick plug part on two opposite sides, and the first clamping claw is provided with a deformation guide arc surface at one end away from the connecting half ring for facilitating insertion into the insertion slot and the locking slot.

[0014] By adopting the technical scheme, two first clamping claws are provided with step surfaces for clamping the quick plug part on two opposite sides. When the first clamping claw is inserted into the quick plug part and extends from the locking slot, the step surface is tightly clamped with the corresponding part of the quick plug part. This clamping structure can effectively limit the movement of the first clamping claw in the axial direction, preventing it from accidentally coming out of the locking slot. When the locking part is installed into the quick plug part, the deformation guide arc surface plays a guiding role. When the first clamping claw approaches the insertion slot, the arc surface can naturally contact the edge of the insertion slot and deform to a certain extent under the action of pressure, so as to smoothly slide into the insertion slot.

[0015] Further, the quick plug part is provided with a locking protrusion on one side close to the locking slot, and two first clamping claws are symmetrically provided with engagement protrusions matched with the locking protrusion on two side walls close to each other.

[0016] By adopting the above technical solution, the locking protrusion and the engaging protrusion are matched. After the first claw extends from the locking groove and completes locking, the locking protrusion and the engaging protrusion engage with each other. The mechanical engagement structure further increases the strength of the connection on the basis of the original connection. This ensures that the cooling pipe and the coolant circulation system always maintain a stable and reliable connection, providing a guarantee for the stable operation of the battery pack's thermal management system.

[0017] Furthermore, the two first claws are provided with deformation guide blocks on their adjacent sidewalls for contacting the pipes in the coolant circulation system. The first claws are inclined downwards from one end of the deformation guide surface to the end connected to the connecting half ring for deformation. The width of the locking groove is greater than the width of the first claw to generate deformation space.

[0018] By adopting the above technical solution, deformation guide blocks are provided on the sidewalls of the two first clamping jaws that are close to each other. These deformation guide blocks act as guides when connecting the cooling pipe to the fittings in the coolant circulation system. When the fitting is inserted into the quick-connect portion and contacts the first clamping jaw, the deformation guide blocks allow the fitting to enter the predetermined position more smoothly, avoiding connection difficulties caused by insertion deviations. The first clamping jaw is inclined downwards from one end of the deformation guide surface to the end connected to the connecting half-ring. This inclined design makes the first clamping jaw more prone to deformation under external force. During installation, when the fitting is inserted into the quick-connect portion and contacts the first clamping jaw, the first clamping jaw can deform according to the designed direction and method, thus better adapting to the insertion of the fitting.

[0019] Furthermore, the connecting half-ring is provided with a second claw corresponding to each of the two first claws, and the quick-connect part is provided with a limiting protrusion that matches the second claw inside.

[0020] By adopting the above technical solution, based on the initial connection and locking achieved by the existing first claw, a second claw is provided above each of the two first claws on the connecting half-ring, and a matching limiting protrusion is provided inside the quick-connect portion. When the locking component is installed into the quick-connect portion, the second claw and the limiting protrusion cooperate to form an additional locking structure. The double locking enhances the stability of the connection between the locking component and the quick-connect portion, and can better resist pressure fluctuations generated during coolant circulation, vibrations during vehicle operation, and other external interference forces. It effectively prevents the connection from loosening or falling off, ensuring that the cooling pipe and the coolant circulation system always maintain a reliable connection, providing a solid guarantee for the stable operation of the battery pack cooling system.

[0021] Furthermore, the quick-connect portion is provided with a gasket and a sealing ring on its inner wall.

[0022] By adopting the above technical solution, the presence of the gasket and sealing ring provides some positioning assistance for the connecting fittings, helping operators insert the fittings into the appropriate position on the quick-connect section during installation. The sealing ring fits tightly against the contact surface between the quick-connect section and the connecting fitting, effectively filling any tiny gaps that may exist between them, forming a reliable sealing barrier to prevent coolant leakage and ensure the normal operation of the cooling system.

[0023] Furthermore, the quick-connect 90° connector includes a connector head and a locking element. The connector head has an integrally connected insertion part and a quick-connect part, and the central axis of the insertion part and the central axis of the quick-connect part are perpendicular to each other.

[0024] By adopting the above technical solutions, the spatial layout within the battery pack of electric vehicles or energy storage systems is often very compact and complex. The design of the central axes of the plug-in section and the quick-connect section being perpendicular to each other allows the quick-connect 90° connector to achieve a 90° turning connection. When the cooling pipe needs to bypass other components, adapt to irregularly shaped spaces, or connect to coolant circulation system components in different directions, this connector can flexibly adjust the connection angle, effectively utilizing limited space, making the arrangement of cooling pipes more reasonable and compact, and improving the internal space utilization rate of the battery pack.

[0025] Furthermore, the cooling pipe body is a corrugated pipe.

[0026] By adopting the above technical solution, the bellows exhibits excellent flexibility, enabling it to bend flexibly within the confined and complex battery pack space and adapt to various irregular layout requirements. Whether it's bypassing other battery components, fitting into specially shaped installation areas, or connecting to coolant circulation system components in different locations, the bellows can easily achieve these goals, effectively improving the flexibility of cooling pipe arrangement within the battery pack and making the entire thermal management system more space-efficient.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The design employs quick-connect straight connectors and quick-connect 90° connectors, eliminating the need for auxiliary tools such as snap ring pliers and simplifying the connection operation between the cooling pipes and coolant circulation system components. The insertion part of the quick-connect straight connector is coaxially integrated with the quick-connect part, facilitating quick docking of the cooling pipe body and other components of the cooling circulation system. The locking mechanism, through the engagement of the first claw with the insertion groove and locking groove of the quick-connect part, as well as the structural design of stepped surfaces, deformation guiding arc surfaces, engagement protrusions, and deformation guiding blocks, further improves installation speed and convenience. The quick-connect 90° connector, with its integrated and perpendicular insertion part and quick-connect part, also facilitates installation, reduces the number of components and connection points, and lowers installation complexity.

[0029] 2. The multiple structural designs of the quick-connect straight connector and the quick-connect 90° connector ensure a stable connection. The locking mechanism of the quick-connect straight connector effectively resists various external forces and prevents the connection from loosening or falling off through the mechanical engagement of the first claw with the quick-connect section and the double locking structure formed by the second claw and the limiting protrusion. The gasket and sealing ring on the inner wall of the quick-connect section ensure a good seal, prevent coolant leakage, and further ensure the stable operation of the cooling system.

[0030] 3. The quick-connect 90° connector enables a 90° directional connection, allowing for flexible adjustment of the connection angle. Within the compact and complex battery pack space, it effectively utilizes limited space, resulting in a more rational and compact arrangement of cooling pipes and improving the internal space utilization of the battery pack. The cooling pipe body uses corrugated tubing, whose excellent flexibility can adapt to various irregular layout requirements, bypassing other battery components or fitting specially shaped installation areas, thus improving the space utilization efficiency of the entire thermal management system. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a battery pack cooling pipe according to an embodiment of this application.

[0032] Figure 2 This is an exploded view of the quick-connect connector structure according to an embodiment of this application. Figure One .

[0033] Figure 3 This is an exploded view of the quick-connect connector structure according to an embodiment of this application. Figure Two .

[0034] Figure 4 This is a schematic diagram of the overall structure of the quick-connect direct connector in an unlocked state according to an embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the overall structure of the quick-connect direct connector in the locked state according to an embodiment of this application.

[0036] Figure 6 This is a cross-sectional view of the quick-connect connector in a locked state according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Cooling pipe body; 2. Quick-connect direct connector; 21. Connector; 211. Insertion part; 212. Quick-connect part; 2121. Insertion groove; 2122. Locking groove; 2123. Locking protrusion; 2124. Limiting protrusion; 2125. Washer ring; 2126. Sealing ring; 22. Locking element; 221. Connecting half ring; 222. First claw; 2221. Step surface; 2222. Deformation guide arc surface; 2223. Engaging protrusion; 2224. Deformation guide block; 223. Second claw; 3. Quick-connect 90° connector. Detailed Implementation

[0038] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1-6 The present application will be further described in detail with reference to the embodiments.

[0039] This application discloses a battery pack cooling pipe. (Refer to...) Figure 1 The battery pack cooling pipe includes a cooling pipe body 1, a quick-connect straight connector 2, and a quick-connect 90° connector 3. The quick-connect straight connector 2 and the quick-connect 90° connector 3 are respectively inserted into and fixed to both ends of the cooling pipe body 1. Both the quick-connect straight connector 2 and the quick-connect 90° connector 3 can be used to connect to the coolant circulation system. In this embodiment, the cooling pipe body 1 is preferably a flexible corrugated pipe, which can be flexibly bent in the narrow and complex battery pack space to adapt to various irregular layout requirements.

[0040] Reference Figure 2 and Figure 3 Both the quick-connect straight connector 2 and the quick-connect 90° connector 3 include a connector 21 and a locking member 22. The connector 21 of both has a plug portion 211 for inserting the cooling pipe body 1 and a quick-connect portion 212 for inserting the locking member 22. The plug portion 211 facilitates the connection between the cooling pipe body 1 and the quick-connect connector; simply aligning the cooling pipe body 1 with the plug portion 211 and inserting it allows for a quick initial connection between the cooling pipe body 1 and the quick-connect connector. The quick-connect portion 212 can quickly connect to other components in the cooling circulation system without complex operations or additional tools, enabling rapid docking with components such as the coolant pump, coolant tank, and heat exchanger, thus improving the installation efficiency of the entire battery pack cooling system.

[0041] In the quick-connect straight connector 2, the insertion part 211 and the quick-connect part 212 are coaxially arranged and integrally connected. In the quick-connect 90° connector 3, the central axis of the insertion part 211 and the central axis of the quick-connect part 212 are perpendicular to each other, and the rest of the structure is consistent with the quick-connect straight connector 2. In the battery pack of electric vehicles or energy storage systems, the spatial layout is often very compact and complex. The design that the central axes of the insertion part 211 and the quick-connect part 212 are perpendicular to each other allows the quick-connect 90° connector 3 to achieve a 90° turning connection. When the cooling pipe needs to bypass other components, adapt to irregular spaces, or connect to coolant circulation system components in different directions, this connector can flexibly adjust the connection angle, effectively utilize limited space, make the arrangement of cooling pipes more reasonable and compact, and improve the internal space utilization of the battery pack.

[0042] Reference Figure 4 and Figure 5Taking the quick-connect straight connector 2 as an example, the locking component 22 of the quick-connect straight connector 2 includes a connecting half ring 221, two first claws 222 and two second claws 223. The first claws 222 and the second claws 223 are symmetrically arranged and integrally connected to both ends of the connecting half ring 221. The two second half rings are located above the two first half rings in a one-to-one correspondence.

[0043] The quick-connect portion 212 has an insertion groove 2121 for inserting the first claw 222 and a locking groove 2122 for extending and locking the first claw 222. The insertion groove 2121 and the locking groove 2122 are arranged opposite to each other on both sides of the quick-connect portion 212. The two first claws 222 have stepped surfaces 2221 on their opposite sides for engaging with the quick-connect portion 212. The first claw 222 has a deformable guide arc surface 2222 at the end away from the connecting half-ring 221 to facilitate insertion into the insertion groove 2121 and the locking groove 2122. The quick-connect portion 212 has a locking protrusion 2123 on the side near the locking groove 2122. The two first claws 222 have symmetrically arranged engaging protrusions 2223 on their two adjacent side walls that match the locking protrusion 2123.

[0044] Combination Figure 6 The first claw 222 has a deformation guide block 2224 on its adjacent sidewalls for contacting the pipes in the coolant circulation system. The first claw 222 is inclined downward from one end of the deformation guide surface to the end connected to the connecting half-ring 221 for deformation. The width of the locking groove 2122 is greater than the width of the first claw 222 to generate deformation space. The quick-connect part 212 has a limiting protrusion 2124 inside that matches the second claw 223. The quick-connect part 212 has a gasket 2125 and a sealing ring 2126 on its inner wall. The sealing ring 2126 fits tightly against the contact surface between the quick-connect part 212 and the connecting pipe, effectively filling any small gaps that may exist between them, forming a reliable sealing barrier to prevent coolant leakage and ensure the normal operation of the cooling system.

[0045] When connecting the cooling pipe to the coolant circulation system, simply align the first claw 222 with the insertion slot 2121 on the side wall of the quick-connect portion 212 and insert it. The first claw 222 enters the quick-connect portion 212 and then extends out from the locking slot 2122 and locks in place. The entire process requires no additional tools, improving installation speed. The locking mechanism utilizes the cooperation of mechanical structures. After the first claw 222 is inserted into the quick-connect portion 212 and extends out from the locking slot 2122, the stepped surface 2221 tightly engages with the corresponding part of the quick-connect portion 212. This engagement structure effectively restricts the axial movement of the first claw 222, preventing it from accidentally dislodging from the locking slot 2122.

[0046] When the locking member 22 is installed into the quick-connect portion 212, the deformable guide arc surface 2222 acts as a guide. When the first claw 222 approaches the insertion groove 2121, the arc surface can naturally contact the edge of the insertion groove 2121 and deform to a certain extent under pressure, thus smoothly sliding into the insertion groove 2121. After the first claw 222 extends from the locking groove 2122 and completes locking, the locking protrusion 2123 and the engaging protrusion 2223 engage with each other. The mechanical engagement structure further increases the strength of the connection on the basis of the original connection, ensuring that the cooling pipe and the coolant circulation system always maintain a stable and reliable connection.

[0047] When the fitting is inserted into the quick-connect part 212 and contacts the first claw 222, the deformation guide block 2224 allows the fitting to enter the predetermined position more smoothly, avoiding connection difficulties caused by deviation during insertion. The first claw 222 is inclined downward from one end of the deformation guide surface to the end connected to the connecting half-ring 221. This inclined design makes the first claw 222 more prone to deformation under external force. During installation, when the fitting is inserted into the quick-connect part 212 and contacts the first claw 222, the first claw 222 can deform in the designed direction and manner, thereby better adapting to the insertion of the fitting.

[0048] Based on the initial connection and locking achieved by the first latch 222, the connecting half-ring 221 is provided with second latches 223 corresponding to the two first latches 222, and the quick-connect portion 212 has a matching limiting protrusion 2124 inside. When the locking member 22 is installed into the quick-connect portion 212, the second latches 223 and the limiting protrusion 2124 cooperate to form an additional locking structure. The double locking enhances the stability of the connection between the locking member 22 and the quick-connect portion 212, and can better resist pressure fluctuations generated during coolant circulation, vibrations during vehicle operation, and other external interference forces, effectively preventing the connection from loosening or falling off, ensuring that the cooling pipe and the coolant circulation system always maintain a reliable connection, and providing a solid guarantee for the stable operation of the battery pack cooling system.

[0049] The implementation principle of a battery pack cooling pipe according to an embodiment of this application is as follows: The battery pack cooling pipe consists of a cooling pipe body 1, a quick-connect straight connector 2, and a quick-connect 90° connector. The quick-connect straight connector 2 and the quick-connect 90° connector are respectively fixed at both ends of the cooling pipe body 1 for connection to the coolant circulation system. The cooling pipe body 1 is made of a flexible corrugated pipe, which can be flexibly bent in the complex and narrow space of the battery pack to adapt to various layout requirements. The quick-connect straight connector 2 and the quick-connect 90° connector have similar structures, both including a connector 21 and a locking member 22. The insertion part 211 of the connector 21 facilitates the quick insertion of the cooling pipe body 1 to achieve initial connection; the quick-connect part 212 is used for quick docking with other components of the coolant circulation system to improve installation efficiency. The insertion part 211 of the quick-connect direct connector 2 is coaxially and integrally connected with the quick-connect part 212. The insertion part 211 of the quick-connect 90° connector is perpendicular to the central axis of the quick-connect part 212, which can realize 90° turning connection, meet the connection requirements of cooling pipes under different spatial layouts, effectively utilize space, and make the cooling pipe layout more reasonable and compact.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery pack cooling pipe, characterized in that: It includes a cooling pipe body (1), a quick-connect straight connector (2) and a quick-connect 90° connector (3). The quick-connect straight connector (2) and the quick-connect 90° connector (3) are respectively located at both ends of the cooling pipe body (1) and are used to connect to the coolant circulation system.

2. The battery pack cooling pipe according to claim 1, characterized in that: The quick-connect connector (2) includes a connector (21) and a locking member (22). The connector (21) has a plug portion (211) for inserting into the cooling pipe body (1) and a quick-connect portion (212) for inserting the locking member (22) and for connecting to the cooling circulation system. The plug portion (211) and the quick-connect portion (212) are coaxially arranged and integrally connected.

3. A battery pack cooling pipe according to claim 2, characterized in that: The locking member (22) has a connecting half ring (221) and two first claws (222) symmetrically arranged at both ends of the connecting half ring (221). The quick-connect part (212) has an insertion groove (2121) for inserting the first claws (222) and a locking groove (2122) for extending and locking the first claws (222) on its side wall. The insertion groove (2121) and the locking groove (2122) are arranged opposite to each other on both sides of the quick-connect part (212).

4. A battery pack cooling pipe according to claim 3, characterized in that: The first claws (222) are provided with stepped surfaces (2221) on opposite sides for engaging the quick-connect portion (212). The first claws (222) are provided with deformable guide arc surfaces (2222) at the end away from the connecting half ring (221) to facilitate insertion into the insertion groove (2121) and the locking groove (2122).

5. A battery pack cooling pipe according to claim 4, characterized in that: The quick-connect portion (212) is provided with a locking protrusion (2123) on the side near the locking groove (2122), and the two first claws (222) are symmetrically provided with engagement protrusions (2223) that match the locking protrusion (2123) on two side walls that are close to each other.

6. A battery pack cooling pipe according to claim 5, characterized in that: The two first claws (222) are provided with deformation guide blocks (2224) on their adjacent sidewalls for contacting the pipes in the coolant circulation system. The first claws (222) are inclined downward from one end of the deformation guide surface to the end connected to the connecting half ring (221) for deformation. The width of the locking groove (2122) is greater than the width of the first claws (222) to generate deformation space.

7. A battery pack cooling pipe according to claim 3, characterized in that: The connecting half-ring (221) is provided with a second claw (223) corresponding to each of the two first claws (222), and the quick-connect part (212) is provided with a limiting protrusion (2124) inside that matches the second claw (223).

8. A battery pack cooling pipe according to claim 2, characterized in that: The quick-connect part (212) has a gasket (2125) and a sealing ring (2126) on its inner wall.

9. A battery pack cooling pipe according to claim 2, characterized in that: The quick-connect 90° connector (3) includes a connector (21) and a locking member (22). The connector (21) has an integrally connected plug part (211) and a quick-connect part (212). The central axis of the plug part (211) and the central axis of the quick-connect part (212) are perpendicular to each other.

10. A battery pack cooling pipe according to claim 1, characterized in that: The cooling pipe body (1) is a corrugated pipe.

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