Highly integrated blind insertion water connector

Abstract

The utility model discloses a highly integrated blind insertion water joint, which is characterized in that a conical pressing ring of a blind insertion end assembly is connected with a cold plate water pipe arranged on a cold liquid plate, when the cold liquid plate is installed, the cold plate water pipe enters the conical pressing ring, and the peripheral surface of the conical pressing ring can guide the cold plate water pipe to be inserted into the water joint. The connection is completed under the condition that the cold plate water pipe and the water connector are not accurately aligned, so that the insertion efficiency and the insertion precision are improved, and the operation difficulty is reduced; furthermore, the conical hold-down ring can axially move relative to a floating base arranged at the bottom of the conical hold-down ring, so that axial force generated in the blind insertion process of the conical hold-down ring and the cold plate water pipe is buffered, the cold plate water pipe cannot be pulled, the risk of cracking and water leakage at the joint is reduced, the reliability of the water connector is improved, and the service life of the water connector is prolonged. And the water joint is adaptive to different battery packs and cold liquid plates by changing the length of the flexible pipe, so that efficient assembly of the box body water pipe and the cold plate water pipe is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a cold plate joint of a battery pack. Background Art

[0002] At present, in the existing CTB technology, both the battery pack and the cold plate top-mounted alternative battery pack upper shell have the current situation that it is difficult to arrange the water inlet and outlet of the cold plate.

[0003] In the existing CTB technology, when the cold plate water interface is set outside the battery pack, the flow channel of the cold plate will pass through the sealing surface of the battery pack, resulting in the damage of the sealing surface and the sealing failure of the battery pack. Since there is no buffer in the axial direction of the water interface, when the cold plate water interface is tightened with the water pipe connection, the water pipe will be pulled, and there will be a risk of cracking and leaking at the connection after a long time of fatigue durability.

[0004] To avoid sealing failure, some cold plate water interfaces are set inside the battery pack. However, this setting will make it difficult to insert the cold plate water interface inside the battery pack after the cold plate is encapsulated. To solve the insertion problem, usually a skylight is opened on the battery pack, the battery pack is lifted, and the cold plate water interface is inserted from the skylight. After the insertion is completed, the skylight cover plate is sealed, resulting in cumbersome insertion and easy insertion errors, and the insertion accuracy cannot be guaranteed.

[0005] Therefore, how to effectively improve the insertion efficiency and insertion accuracy of the cold plate water interface and ensure the reliability of the joint structure has become an urgent problem to be solved in this field. Summary of the Utility Model

[0006] Aiming at the defects of the prior art, the purpose of the utility model is to provide a highly integrated blind plug water joint with reliable structure, fast insertion and high insertion accuracy.

[0007] To achieve the above purpose, the highly integrated blind plug water joint provided by the utility model is used to cooperate with the liquid cooling plate of the battery pack. The liquid cooling plate is arranged on the top of the battery pack, and the cold plate water pipe is arranged on the liquid cooling plate. The box body water pipe is arranged on the side plate of the battery pack.

[0008] The water joint is arranged inside the battery pack and includes a blind plug end assembly, a fixed end assembly and a flexible pipe. One end of the flexible pipe is connected to the blind plug end assembly, and the other end is connected to the fixed end assembly.

[0009] The blind plug end assembly includes a conical pressing ring for connecting and cooperating with the cold plate water pipe and a floating base arranged at the bottom of the conical pressing ring. The conical pressing ring is configured to axially move relative to the floating base.

[0010] The fixed end assembly includes a flat head pressing ring for connecting and cooperating with the box body water pipe.

[0011] Further, the end of the conical pressing ring that mates with the cold plate water pipe is configured as a conical-like structure with a gradually decreasing cross-section from the first end to the second end. The diameter of the first end is greater than the diameter of the cold plate water pipe, and the diameter of the second end is adapted to the cold plate water pipe.

[0012] Further, an annular locking piece for fixing the cold plate water pipe is provided in the middle area of the conical pressing ring.

[0013] Further, the blind plug end assembly further includes a blind plug end housing. One end of the blind plug end housing is connected to the conical pressing ring, and the other end is elastically connected to the floating base.

[0014] Further, a connection cavity adapted to the blind plug end housing is formed in the floating base. A floating cavity extends outward from the connection cavity. A spring is provided in the floating cavity. One end of the spring is connected to the floating cavity, and the other end is connected to the blind plug end housing.

[0015] Further, box fixing brackets are provided on both sides of the floating base.

[0016] Further, the diameter of the flat head pressing ring is adapted to the box body water pipe. An unlocking buckle for fixing the box body water pipe is provided in the middle area of the flat head pressing ring.

[0017] Further, the fixed end assembly further includes a fixed end housing. One end of the fixed end housing is connected to the flat head pressing ring, and the other end is connected to the flexible pipe.

[0018] Further, a temperature sensing probe is provided on the fixed end housing.

[0019] Further, the flexible pipe is composed of a corrugated pipe or a silica gel pipe.

[0020] The highly integrated blind plug water joint provided by the present utility model is arranged in the battery pack. The conical pressing ring of the blind plug end assembly is connected to the cold plate water pipe provided on the cold liquid plate. When installing the cold liquid plate, the cold plate water pipe enters the conical pressing ring. The circumferential surface of the conical pressing ring can guide the cold plate water pipe to be inserted into the water joint, so that the cold plate water pipe is blindly plugged and connected to the water joint, and the connection is completed without precise alignment between the cold plate water pipe and the water joint, improving the plugging efficiency and accuracy, and at the same time reducing the difficulty of manual operation.

[0021] Further, the conical pressing ring can axially move relative to the floating base provided at the bottom of the conical pressing ring, so that when the conical pressing ring is connected to the cold plate water pipe, the axial tension generated during the pressing and fixing process of the conical pressing ring is buffered, and no pulling force is applied to the cold plate water pipe, thereby reducing the risk of cracking and leakage at the connection and improving the reliability of the water joint.

[0022] Meanwhile, the highly integrated blind plug water joint provided by the present utility model connects the flexible pipe with the blind plug end assembly and the fixed end assembly. By simply changing the length of the flexible pipe, the water joint can be adapted to different battery packs and cold liquid plates, so as to achieve simple and efficient assembly of the box body water pipe and the cold plate water pipe. Brief Description of the Drawings

[0023] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0024] Figure 1 Schematic diagram of the cooperation between the highly integrated blind plug water joint provided by the present utility model and the battery pack and the cold liquid plate;

[0025] Figure 2 Schematic diagram of the overall structure of the highly integrated blind plug water joint provided by the present utility model;

[0026] Figure 3 Exploded view of the highly integrated blind plug water joint provided by the present utility model;

[0027] Figure 4 Top view of the conical compression ring in the present utility model;

[0028] Figure 5 Schematic diagram of the connection structure between the blind plug end housing and the floating base in the present utility model;

[0029] Figure 6 Schematic diagram of another example of the highly integrated blind plug water joint in the present utility model.

[0030] Reference Signs:

[0031] 1. Blind plug end assembly; 11. Conical compression ring; 111. Connection part; 112. First end; 113. Second end; 114. Peripheral surface; 115. Blind plug end locking cavity; 12. Floating base; 121. Connection cavity; 122. Floating cavity; 123. Box body fixing bracket; 13. Annular lock piece; 131. Lock teeth; 14. Blind plug end housing; 15. Spring; 16. Sealing ring; 17. Isolation ring;

[0032] 2. Flexible pipe;

[0033] 3. Fixed end assembly; 31. Flat head compression ring; 311. Fixed end locking cavity; 32. Fixed end housing; 33. Lock; 34. Temperature sensor probe;

[0034] 4. Battery pack; 41. Box body water pipe;

[0035] 5. Cold liquid plate; 51. Cold plate water pipe; Specific Embodiments

[0036] In order to make the technical means, creative features, achieved objectives and functions realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific illustrations.

[0037] See Figure 1 and Figure 2 , which shows an example of the highly integrated blind plug water joint provided by the present utility model.

[0038] As can be seen from the figure, the highly integrated blind plug water joint of this example is used to cooperate with the cold liquid plate 5 of the battery pack 4. The cold liquid plate 5 is arranged on the top of the battery pack 4. The cold plate water pipe 51 is provided on the cold liquid plate 5, and the box body water pipe 41 is provided on the side plate of the battery pack 4. The highly integrated blind plug water joint provided by the present utility model is arranged in the battery pack 4 and mainly includes a blind plug end assembly 1, a flexible pipe 2 and a fixed end assembly 3.

[0039] One end of the flexible pipe 2 is connected to the blind plug end assembly 1, and the other end is connected to the fixed end assembly 3. The blind plug end assembly 1 includes a conical pressing ring 11 and a floating base 12 arranged at the bottom of the conical pressing ring 11. The conical pressing ring 11 is configured to be able to connect and cooperate with the cold plate water pipe 51 and can also axially move relative to the floating base 12, so that when installing the cold liquid plate 5 and the cold plate water pipe 51 is not accurately aligned with the conical pressing ring 11, the conical pressing ring 11 can guide the cold plate water pipe 52 into the conical pressing ring 11. During the process of fixedly connecting the conical pressing ring 11 and the cold plate water pipe 52, the axial force generated by the conical pressing ring 11 can axially move relative to the floating base 12, so that the axial force is buffered and will not pull the cold plate water pipe 52, improving the reliability of the connection. At the same time, the fixed end assembly 3 is used to connect and cooperate with the box body water pipe 41, so that the cold plate water pipe 52 and the box body water pipe 41 are connected through the water joint, and the plugging is convenient and the structure is reliable.

[0040] Specifically, in combination with Figure 3 and Figure 4, the connecting portion 111 where the conical compression ring 11 of the blind plug end assembly 1 mates with the cold plate water pipe 51 is configured as a conical structure with a gradually decreasing cross-section from the first end 112 to the second end 113. The diameter of the first end 112 is greater than the diameter of the cold plate water pipe 51, and the diameter of the second end 113 is adapted to the cold plate water pipe 51, so that the connecting portion 111 forms a smooth circumferential surface 114 extending from the first end 112 to the second end 113. When the cold plate water pipe 51 is connected to the conical compression ring 11, the cold plate water pipe 51 can enter the second end 113 to connect with the conical compression ring 11 without being precisely aligned with the center of the connecting portion 111 directly. Instead, it can enter the conical compression ring 11 from the first end 112 and abut against any position on the circumferential surface 114 of the connecting portion 111. When the cold liquid plate 5 continues to move closer to the conical compression ring 11 for installation, the circumferential surface 114 can guide the cold plate water pipe 51 to enter from the first end 112 to the second end 113, so that the cold plate water pipe 51 can be precisely aligned with the center of the conical compression ring 11 and enter the conical compression ring 11, thereby enabling the cold plate water pipe 51 to be blindly plugged and connected to the conical compression ring 11, improving the plugging efficiency and accuracy, and reducing the difficulty of manual operation at the same time.

[0041] When the cold plate water pipe 51 is blindly plugged with the conical compression ring 11, in order to enable the cold plate water pipe 51 to enter and mate with the conical compression ring 11, the cold liquid plate 5 will continuously move closer to the conical compression ring 11. During the movement, the cold plate water pipe 51 will exert pressure on the circumferential surface 114 of the connecting portion 111, resulting in an axial force on the conical compression ring 11. In order to prevent the axial force from pulling on the cold plate water pipe 51 and ensure the connection reliability between the conical compression ring 11 and the cold plate water pipe 51, the conical compression ring 11 is configured to be axially movable relative to the floating base 12 provided at the bottom of the conical compression ring 11 to buffer the axial force and ensure a reliable connection.

[0042] Specifically, in combination with Figure 2 and Figure 3 , the blind plug end assembly 1 further includes a blind plug end housing 14. One end of the blind plug end housing 14 is connected to the conical compression ring 11, and the other end is elastically connected to the floating base 12, so that the conical compression ring 11 can generate an axial displacement relative to the floating base 12.

[0043] Furthermore, in combination with Figure 5 , a connection cavity 121 adapted to the blind plug end housing 14 is formed inside the floating base 12. The connection cavity 121 extends outward to form a floating cavity 122. One end of a spring 15 is connected to the bottom of the floating cavity 122, and the other end is connected to the bottom of the blind plug end housing 14, so as to arrange the blind plug end housing 14 on the top of the connection cavity 121. The blind plug end housing 14 can axially move relative to the floating base 12 through the spring 15.

[0044] In cooperation therewith, the top of the blind plug end housing 14 is connected to the bottom area of the conical pressing ring 11. For example, snap connection can be adopted to fixedly connect the blind plug end housing 14 and the conical pressing ring 11, so that the cold plate water pipe 51 applies pressure to the peripheral surface 114 of the connecting part 111. When the conical pressing ring 11 is subjected to an axial force, the conical pressing ring 11 can axially move relative to the floating base 12 through the spring 15. The spring 15 undergoes elastic deformation under the axial force to absorb and buffer the axial force, so that the axial force will not pull the cold plate water pipe 51, ensuring the connection reliability between the conical pressing ring 11 and the cold plate water pipe 51.

[0045] In order to ensure the connection sealing performance between the blind plug end housing 14 and the conical pressing ring 11 and prevent leakage during the cold liquid transportation, a sealing ring 16 and an isolating ring 17 are provided in the blind plug end housing 14.

[0046] Further, a blind plug end locking cavity 115 for accommodating the annular lock piece 13 is provided in the middle area of the conical pressing ring 11. Lock teeth 131 are formed in the annular lock piece 13. After the cold plate water pipe 51 enters the conical pressing ring 11, the annular lock piece 13 is sleeved on the cold plate water pipe 51, and the lock teeth 131 are abutted against the cold plate water pipe 51 to fix the cold plate water pipe 51 and prevent the cold plate water pipe 51 from slipping, so that the cold plate water pipe 51 is fixedly connected to the conical pressing ring 11.

[0047] Thus, the blind plug end assembly 1 is blindly plugged and fixedly connected to the cold plate water pipe 51 on the cold liquid plate 5. In order to connect this water joint to the box body water pipe 41 on the side plate of the battery pack 4, this water joint further includes a flexible pipe 2 and a fixed end assembly 3.

[0048] One end of the flexible pipe 2 is connected to the floating base 12 of the blind plug end assembly 1, and the other end is connected and cooperated with the fixed end assembly 3, so that the blind plug end assembly 1 and the fixed end assembly 3 are distributed at an angle through the flexible pipe 2 and are respectively connected to the cold plate water pipe 51 and the box body water pipe 41.

[0049] In some embodiments, the flexible pipe 2 is composed of a corrugated pipe, as Figure 2 shown, so that the flexible pipe 2 has strong plasticity and flexibility, can absorb vibration and compensate for displacement, and reduce noise and vibration.

[0050] In some embodiments, the flexible pipe 2 is composed of a silicone tube, as Figure 6 shown, so that the flexible pipe 2 has high and low temperature tolerance, can withstand high temperature and low temperature environments, and can stably transport cold liquid.

[0051] Further, by adjusting the length of the flexible pipe 2, this water joint can be adapted to different battery packs 4 and cold liquid plates 5, so as to realize simple and efficient assembly of the box body water pipe 41 and the cold plate water pipe 51.

[0052] Correspondingly, the fixed-end component 3 mainly includes a flat-head pressing ring 31. The diameter of the flat-head pressing ring 31 is adapted to the diameter of the box body water pipe 41, so that the box body water pipe 41 can be snapped into the flat-head pressing ring 31 and connected to the flat-head pressing ring 31.

[0053] Further, a fixed-end locking cavity 311 for accommodating the lock 33 is provided in the middle area of the flat-head pressing ring 31. Preferably, the lock 33 and the flat-head pressing ring 31 are connected by a snap connection. After the box body water pipe 41 enters the flat-head pressing ring 31, the lock 33 is sleeved on the box body water pipe 41 to fix the box body water pipe 41, so that the box body water pipe 41 is fixedly connected to the flat-head pressing ring 31.

[0054] To connect the flat-head pressing ring 31 to the flexible pipe 2, the fixed-end component 3 further includes a fixed-end housing 32. One end of the fixed-end housing 32 is connected to the flat-head pressing ring 31. For example, a snap connection can be used. The other end is connected to the flexible pipe 2 to fixedly connect the flat-head pressing ring 31 to the flexible pipe 2, thereby connecting the fixed-end component 3 to the blind plug end component 1, and the cold liquid can flow in the box body water pipe 41 and the cold plate water pipe 51.

[0055] To ensure the connection sealing performance between the fixed-end housing 32 and the flat-head pressing ring 31 and prevent leakage during the cold liquid transportation, a sealing ring 16 and a spacer ring 17 are provided in the fixed-end housing 32.

[0056] Further, a temperature sensor probe 34 is also provided on the fixed-end housing 32 to measure the internal temperature of the water joint through the temperature sensor probe 34 and avoid the cold liquid from failing due to overheating or overcooling.

[0057] Thus, one end of the flexible pipe 2 is connected to the blind plug end component 1, and the other end is connected to the fixed-end component 3, so that the blind plug end component 1 is fixedly connected to the cold plate water pipe 51 on the cold liquid plate 5 through the conical pressing ring 11 by blind plugging and can buffer the axial force generated during the blind plugging process to ensure stable connection. At the same time, the fixed-end component 3 is fixedly connected to the box body water pipe 41 on the battery pack 4 through the flat-head pressing ring 31.

[0058] To make the connection between the water joint and the battery pack 4 stable, box body fixing brackets 123 are further provided on both sides of the floating base 12 of the blind plug end component 1. The box body fixing brackets 123 are connected to the cold liquid plate 5 and / or the bottom plate on the top of the battery pack 4 to make the connection between the water joint and the battery pack 4 stable.

[0059] The highly integrated blind plug water joint provided by the present utility model is arranged in the battery pack 4. Through the cooperation of the blind plug end assembly 1, the flexible pipe 2 and the fixed end assembly 3, the water joint is connected to the cold plate water pipe 51 and the box body water pipe 4, enabling the blind plug connection between the water joint and the cold plate water pipe 51, completing the connection even when the cold plate water pipe 51 and the water joint are not precisely aligned, improving the plugging efficiency and accuracy, reducing the difficulty of manual operation at the same time, and buffering the axial force generated during the blind plugging process, thereby reducing the risk of cracking and leakage at the connection and improving the reliability of the water joint.

[0060] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A highly integrated blind plug water connector, used to cooperate with a liquid cooling plate of a battery pack, wherein the liquid cooling plate is arranged on the top of the battery pack, characterized in that: The liquid cooling plate is provided with a cold plate water pipe, and the side plate of the battery pack is provided with a box water pipe. The water connector is arranged in the battery pack, and includes a blind plug end assembly, a fixed end assembly and a flexible tube, one end of the flexible tube is connected to the blind plug end assembly, and the other end is connected to the fixed end assembly. The blind plug assembly includes a conical clamping ring for connecting with the cold plate water pipe and a floating base arranged at the bottom of the conical clamping ring, wherein the conical clamping ring is configured to be able to move axially relative to the floating base. The fixed end assembly includes a flat head compression ring for connecting with the water pipe of the box body.

2. The highly integrated blind plug water connector according to claim 1, characterized in that: The end of the conical clamping ring that cooperates with the cold plate water pipe is configured to be a conical structure with a gradually decreasing cross-section from the first end to the second end. The diameter of the first end is larger than the diameter of the cold plate water pipe, and the diameter of the second end is adapted to the cold plate water pipe.

3. The highly integrated blind plug water connector according to claim 2, characterized in that: An annular locking piece for fixing the cold plate water pipe is provided in the middle area of ​​the conical clamping ring.

4. The highly integrated blind plug water connector according to claim 1, characterized in that: The blind-plug end assembly further comprises a blind-plug end housing, one end of which is connected to the conical clamping ring, and the other end of which is elastically connected to the floating base.

5. The highly integrated blind plug water connector according to claim 4, characterized in that: A connecting cavity adapted to the blind plug end shell is formed in the floating base, and the connecting cavity extends outward to form a floating cavity. A spring is provided in the floating cavity, one end of the spring is connected to the floating cavity, and the other end is connected to the blind plug end shell.

6. The highly integrated blind plug water connector according to claim 5, characterized in that: Box fixing brackets are arranged on both sides of the floating base.

7. The highly integrated blind plug water connector according to claim 1, characterized in that: The diameter of the flat head clamping ring is matched with the box water pipe, and a lock buckle for fixing the box water pipe is provided in the middle area of ​​the flat head clamping ring.

8. The highly integrated blind plug water connector according to claim 7, characterized in that: The fixed end assembly also includes a fixed end shell, one end of which is connected to the flat head clamping ring, and the other end of which is connected to the flexible tube.

9. The highly integrated blind plug water connector according to claim 8, characterized in that: A temperature sensing probe is arranged on the fixed end shell.

10. The highly integrated blind plug water connector according to claim 1, characterized in that: The flexible tube is composed of a corrugated tube or a silicone tube.

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