Liquid cooling pipeline, liquid cooling system and battery pack

Abstract

The utility model discloses a liquid cooling pipeline, a liquid cooling system and a battery pack. The liquid cooling pipeline comprises a water inlet pipe; the length of the first pipe is smaller than that of the second pipe, and the water inlet end of the first pipe and the water inlet end of the second pipe are both connected with the water outlet end of the water inlet pipe; the flow limiting piece is arranged in the first pipe and used for limiting the flow in the first pipe. According to the liquid cooling pipeline provided by the utility model, the flow limiting piece is arranged in the first pipe, so that the water outlet flow of the first pipe can be limited, the water outlet flow of the water outlet branch of the liquid cooling pipeline is more uniform, and the production difficulty and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a liquid cooling pipeline, a liquid cooling system and a battery pack. Background Art

[0002] Batteries generate a lot of heat during operation. It is a common practice in the industry to cool down the batteries through liquid cooling devices such as liquid cooling plates. In order to evenly distribute the coolant in the liquid cooling device, the coolant branches connected to the liquid cooling device are evenly distributed. In related technologies, even flow is achieved by adjusting the inner diameter of each branch connector. The production process is relatively complicated, which makes the production cost higher. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a liquid cooling pipeline, the outlet flow rate of the water outlet branch of the liquid cooling pipeline is more uniform, and the production cost is low.

[0004] The utility model also provides a liquid cooling system having the liquid cooling pipeline.

[0005] The utility model also provides a battery pack having the liquid cooling system.

[0006] According to the first aspect of the utility model, the liquid cooling pipeline includes: a water inlet pipe; a first pipe and a second pipe, the length of the first pipe is smaller than the length of the second pipe, and the water inlet ends of the first pipe and the second pipe are connected to the water outlet end of the water inlet pipe; a flow limiting component, which is arranged in the first pipe and is used to limit the flow in the first pipe.

[0007] According to the liquid cooling pipeline of the first aspect of the utility model, by arranging a flow limiting component in the first tube, the water outlet flow rate of the first tube can be limited, so that the water outlet flow rate of the water outlet branch of the liquid cooling pipeline is more uniform, and the production difficulty and production cost can be reduced.

[0008] According to some embodiments of the present invention, the flow limiting member is configured to make the water outlet flow rate of the first pipe and the water outlet flow rate of the second pipe the same.

[0009] According to some embodiments of the present utility model, the flow limiting member is a flow limiting tube, the flow limiting tube extends along the extension direction of the first tube, and the inner side of the flow limiting tube defines a flow limiting channel.

[0010] According to some embodiments of the present invention, the outer peripheral wall of the flow limiting tube is sealedly connected to the inner peripheral wall of the first tube.

[0011] According to some embodiments of the present invention, the water inlet pipe, the first pipe and the second pipe are connected via a first three-way valve.

[0012] According to some embodiments of the present invention, the first tube is made of nylon material; and / or the second tube is made of nylon material.

[0013] According to some embodiments of the utility model, the liquid cooling pipeline also includes: a first branch and a second branch, the first branch includes a first branch pipe and a second branch pipe, the water inlet ends of the first branch pipe and the second branch pipe are both connected to the water outlet end of the first pipe, the second branch includes a third branch pipe and a fourth branch pipe, the water inlet ends of the third branch pipe and the fourth branch pipe are both connected to the water outlet end of the second pipe.

[0014] According to some embodiments of the present invention, the first branch pipe has the same length as the second branch pipe, and the third branch pipe has the same length as the fourth branch pipe.

[0015] The liquid cooling system according to the second aspect of the utility model comprises: a liquid cooling device; the liquid cooling pipeline according to the first aspect of the utility model, wherein the water outlet ends of the first pipe and the second pipe are connected to the liquid cooling device.

[0016] According to the liquid cooling system of the second aspect of the utility model, by setting the above-mentioned liquid cooling pipeline according to the first aspect of the utility model, the cooling liquid can be distributed more evenly in the liquid cooling device, thereby improving the cooling uniformity of the liquid cooling device.

[0017] The battery pack according to the third aspect of the utility model comprises: the liquid cooling system according to the second aspect of the utility model.

[0018] According to the battery pack of the third aspect of the utility model, by providing the liquid cooling system according to the second aspect of the utility model, the uniformity of cooling of the battery pack can be improved.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a liquid cooling pipeline according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the AA direction shown in .

[0022] Reference numerals:

[0023] 100. Liquid cooling pipeline;

[0024] 10. Water inlet pipe;

[0025] 20. First tube;

[0026] 30. Second tube;

[0027] 40. current limiting component; 41. current limiting flow channel;

[0028] 50, first three-way valve; 51, second three-way valve; 53, third three-way valve;

[0029] 60, first branch; 61, first branch pipe; 62, second branch pipe;

[0030] 70, second branch; 71, third branch; 72, fourth branch. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference below Figure 1-Figure 2 A liquid cooling circuit 100 according to an embodiment of the first aspect of the present invention is described.

[0033] like Figure 1 and Figure 2 As shown, the liquid cooling pipeline 100 according to the embodiment of the first aspect of the utility model includes: a water inlet pipe 10, a first pipe 20, a second pipe 30 and a flow limiting component 40.

[0034] Specifically, the length of the first tube 20 is smaller than that of the second tube 30 , the water inlet ends of the first tube 20 and the second tube 30 are connected to the water outlet end of the water inlet pipe 10 , and the flow limiting member 40 is disposed in the first tube 20 and is used to limit the flow in the first tube 20 .

[0035] Among them, the coolant can flow out of the liquid cooling pipeline 100 directly from the first tube 20 and the second tube 30, that is, the first tube 20 and the second tube 30 are the water outlet branches of the liquid cooling pipeline 100, and the coolant can also flow out of the first tube 20 and the second tube 30 and then flow out of the liquid cooling pipeline 100 through other branches.

[0036] During the operation of the liquid cooling system, the coolant flowing out from the water outlet end of the water inlet pipe 10 flows into the first tube 20 and the second tube 30 from the water inlet ends of the first tube 20 and the second tube 30 respectively. It can be understood that the coolant will be subject to the resistance of the pipeline during the flow in the pipeline. The length of the second tube 30 is greater than the length of the first tube 20. The action time of the resistance of the second tube 30 on the coolant will be greater than the action time of the resistance of the first tube 20 on the coolant. In this way, the water outlet speed of the second tube 30 will be lower than the water outlet speed of the first tube 20, so that the water outlet flow rate of the second tube 30 is smaller than the water outlet flow rate of the first tube 20.

[0037] In this embodiment, by setting a flow-limiting member 40 in the first tube 20, the flow-limiting member 40 can block the coolant in the first tube 20, thereby increasing the resistance of the coolant flowing in the first tube 20 and reducing the water flow rate of the first tube 20. Therefore, when the first tube 20 and the second tube 30 are the water outlet branches of the liquid cooling pipeline 100, the water outlet flow rate of the first tube 20 is adjusted by adjusting the blocking degree of the flow-limiting member 40 on the coolant in the first tube 20, so that the water outlet flow rate of the first tube 20 and the second tube 30 is more uniform, that is, the water outlet flow rate of the water outlet branch of the liquid cooling pipeline 100 is more uniform; when the other branch pipes connected to the first tube 20 and the second tube 30 are the water outlet branches, the water outlet flow rate of the first tube 20 is adjusted by adjusting the blocking degree of the flow-limiting member 40 on the coolant in the first tube 20, so that the difference between the water outlet flow rates of the first tube 20 and the second tube 30 can be adjusted, so that the water outlet flow rates of each water outlet branch are more uniform.

[0038] It is understandable to those skilled in the art that, compared with controlling the water flow rate of each branch through pipe joints with different inner diameters, the flow limiting component 40 set in the first tube 20 has lower mold cost and is easier to produce, thereby reducing production difficulty and production cost.

[0039] According to the liquid cooling pipeline 100 of the first aspect of the present invention, by setting a flow limiting component 40 in the first tube 20, the water outlet flow rate of the first tube 20 can be limited, so that the water outlet flow rate of the water outlet branch of the liquid cooling pipeline 100 is more uniform, and the production difficulty and production cost can be reduced.

[0040] In some embodiments of the present invention, the flow limiter 40 is configured to make the water flow rate of the first pipe 20 the same as the water flow rate of the second pipe 30. Therefore, when designing the pipeline downstream of the first pipe 20 and the second pipe 30, the flow rate of the coolant flowing into the downstream pipeline connected to the first pipe 20 and the second pipe 30 is the same, which can reduce the design difficulty of the pipeline downstream of the first pipe 20 and the second pipe 30, thereby reducing the design difficulty of the liquid cooling pipeline 100.

[0041] In some embodiments of the present invention, Figure 2As shown, the flow limiting member 40 is a flow limiting tube, which extends along the extension direction of the first tube 20, and defines a flow limiting channel 41 on the inner side of the flow limiting tube. The flow limiting tube has a simple structure, and it is easier to adjust the size of the flow limiting channel 41 on the inner side of the flow limiting tube, which can further reduce the production difficulty and production cost. Among them, the flow limiting channel 41 is provided on the flow limiting tube to improve the uniformity of the distribution of the coolant in the first tube 20.

[0042] When the coolant flows through the flow limiting tube, the coolant can only flow through the flow limiting channel 41, that is, the outer peripheral wall of the flow limiting tube is sealed and connected to the inner peripheral wall of the first tube 20, and the coolant can also flow through the flow limiting channel 41 and the gap between the flow limiting tube and the inner wall of the first tube 20.

[0043] In some embodiments of the present invention, Figure 2 As shown, the outer peripheral wall of the flow limiting tube is sealed and connected to the inner peripheral wall of the first tube 20. Thus, the uniformity of the coolant distribution in the first tube 20 can be further improved, and the number of design parameters can be reduced during product design, thereby reducing the difficulty of product design.

[0044] In some embodiments of the present invention, Figure 1 As shown, the water inlet pipe 10, the first pipe 20 and the second pipe 30 are connected through the first three-way valve 50. Thus, the connection of the water inlet pipe 10, the first pipe 20 and the second pipe 30 can be achieved, and the cost of the first three-way valve 50 is low, which can further reduce the production cost.

[0045] In some embodiments of the present invention, the first tube 20 is made of nylon material; and / or the second tube 30 is made of nylon material. That is, the first tube 20 may be made of nylon material, the second tube 30 may be made of nylon material, or both the first tube 20 and the second tube 30 may be made of nylon material. Nylon material has strong chemical stability and high strength, thereby improving the reliability of the liquid cooling pipeline 100 during operation.

[0046] In some embodiments of the present invention, Figure 1 As shown, the liquid cooling pipeline 100 also includes: a first branch 60 and a second branch 70, the first branch 60 includes a first branch pipe 61 and a second branch pipe 62, the water inlet ends of the first branch pipe 61 and the second branch pipe 62 are both connected to the water outlet end of the first pipe 20, the second branch 70 includes a third branch pipe 71 and a fourth branch pipe 72, the water inlet ends of the third branch pipe 71 and the fourth branch pipe 72 are both connected to the water outlet end of the second pipe 30.

[0047] Among them, the first tube 20, the first branch 61 and the second branch 62 are connected by the second three-way valve 51, and the second tube 30, the third branch 71 and the fourth branch 72 are connected by the third three-way valve 53. During the product design process, parameters such as the length or extension direction of the first branch 60 and the second branch 70 can be adjusted so that the liquid cooling pipeline 100 can meet more usage needs.

[0048] In some embodiments of the present invention, the first branch pipe 61 and the second branch pipe 62 have the same length, and the third branch pipe 71 and the fourth branch pipe 72 have the same length.

[0049] Therefore, the coolant encounters the same resistance when flowing in the first branch pipe 61 and the second branch pipe 62. After the coolant in the first tube 20 flows into the first branch pipe 61 and the second branch pipe 62, the water flow rates flowing out of the first branch pipe 61 and the second branch pipe 62 are also the same. When the first branch pipe 61 and the second branch pipe 62 are directly connected to the liquid cooling device, the uniformity of the coolant in the liquid cooling device can be improved. When the first branch pipe 61 and the second branch pipe 62 are connected to other pipelines, the difficulty of pipeline design can be reduced.

[0050] The coolant encounters the same resistance when flowing in the third branch pipe 71 and the fourth branch pipe 72. After the coolant in the second pipe 30 flows into the third branch pipe 71 and the fourth branch pipe 72, the water flow rates flowing out of the third branch pipe 71 and the fourth branch pipe 72 are also the same. When the third branch pipe 71 and the fourth branch pipe 72 are directly connected to the liquid cooling device, the uniformity of the coolant in the liquid cooling device can be improved. When the third branch pipe 71 and the fourth branch pipe 72 are connected to other pipelines, the difficulty of pipeline design can be reduced.

[0051] The liquid cooling system according to the second embodiment of the utility model comprises: a liquid cooling device and the liquid cooling pipeline 100 according to the first embodiment of the utility model, and the water outlet ends of the first tube 20 and the second tube 30 are connected to the liquid cooling device.

[0052] Among them, the water outlet ends of the first tube 20 and the second tube 30 can be directly connected to the liquid cooling device, and the water outlet ends of the first tube 20 and the second tube 30 can also be connected to the liquid cooling device through other pipelines. The water outlet flow rate of the water outlet branch of the liquid cooling pipeline 100 is relatively uniform, and the distribution of the coolant in the liquid cooling device is also relatively uniform.

[0053] According to the liquid cooling system of the second aspect of the utility model, by setting the liquid cooling pipeline 100 according to the first aspect of the utility model, the coolant can be distributed more evenly in the liquid cooling device, thereby improving the cooling uniformity of the liquid cooling device.

[0054] The battery pack according to the embodiment of the third aspect of the utility model includes: the liquid cooling system according to the embodiment of the second aspect of the utility model.

[0055] According to the battery pack of the embodiment of the third aspect of the utility model, the uniformity of cooling of the battery pack can be improved by providing the liquid cooling system according to the embodiment of the second aspect of the utility model.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A liquid cooling pipeline, characterized in that: include: Water inlet pipe; A first tube and a second tube, wherein the length of the first tube is smaller than the length of the second tube, and the water inlet ends of the first tube and the second tube are both connected to the water outlet end of the water inlet pipe; A flow limiting member is disposed in the first tube and is used to limit the flow in the first tube.

2. The liquid cooling pipeline according to claim 1, characterized in that: The flow restrictor is configured to make the water outlet flow rate of the first pipe and the water outlet flow rate of the second pipe the same.

3. The liquid cooling pipeline according to claim 1, characterized in that: The flow limiting member is a flow limiting tube, which extends along the extending direction of the first tube, and the inner side of the flow limiting tube defines a flow limiting channel.

4. The liquid cooling pipeline according to claim 3, characterized in that: The outer peripheral wall of the flow limiting tube is sealedly connected to the inner peripheral wall of the first tube.

5. The liquid cooling pipeline according to claim 1, characterized in that: The water inlet pipe, the first pipe and the second pipe are connected via a first three-way valve.

6. The liquid cooling pipeline according to claim 1, characterized in that: The first tube is made of nylon material; and / or the second tube is made of nylon material.

7. The liquid cooling pipeline according to any one of claims 1 to 6, characterized in that: Also includes: The first branch and the second branch, The first branch includes a first branch pipe and a second branch pipe, and the water inlet ends of the first branch pipe and the second branch pipe are both connected to the water outlet end of the first pipe. The second branch includes a third branch pipe and a fourth branch pipe, and water inlet ends of the third branch pipe and the fourth branch pipe are both connected to the water outlet end of the second pipe.

8. The liquid cooling pipeline according to claim 7, characterized in that: The first branch pipe has the same length as the second branch pipe, and the third branch pipe has the same length as the fourth branch pipe.

9. A liquid cooling system, characterized in that: include: Liquid cooling device; In the liquid cooling pipeline according to any one of claims 1 to 8, water outlet ends of the first tube and the second tube are connected to the liquid cooling device.

10. A battery pack, characterized in that: include: The liquid cooling system of claim 9.

Images