A sealed battery cooling connection pipe structure for new energy vehicles

Abstract

This utility model discloses a sealed battery cooling connection pipe structure for new energy vehicles, including an inlet pipe, an outlet pipe, and multiple cooling sections. The battery is divided into strip-shaped battery packs with parallel gaps. Corresponding branch pipes are provided at the ends of the inlet and outlet pipes, and cooling sections are arranged between each group of branch pipes. Each cooling section includes first and second bent pipes arranged in a front-to-back pattern, composed of continuous S-shaped pipes, connected to the middle of the branch pipes and crossing to the end of another branch pipe. The inner diameter of the first connecting pipe is smaller than that of the bent pipes and the second connecting pipe, and combined with the 30°-60° flow guiding structure at the end of the first branch pipe, it accelerates the flow of coolant to the rear of the battery. The cooling sections are made of thermally conductive metal. This structure solves the problem of uneven cooling in traditional systems through zoned parallel cooling and fluid optimization, achieving efficient battery heat dissipation. It is compact, low-cost, and suitable for thermal management of new energy vehicle batteries.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle battery cooling technology, and in particular to a sealed battery cooling connection pipe structure for new energy vehicles. Background Technology

[0002] With the rapid development of new energy vehicle technology, the energy density and power density of power batteries are constantly increasing, and the heat generated by the batteries during charging and discharging is also increasing. Excessive temperature can lead to decreased battery performance, shortened lifespan, and even safety hazards. Therefore, an effective battery thermal management system is crucial for the performance and safety of new energy vehicles.

[0003] Traditional battery cooling systems typically employ a single coolant channel or a simple serpentine tube structure, which presents the following problems:

[0004] Uneven cooling: As the coolant flows through the pipes, its temperature gradually increases, resulting in a large temperature difference between the front and rear ends of the battery pack, which affects battery consistency.

[0005] Low cooling efficiency: The flow rate of coolant in a single channel is limited, and the heat exchange area with the battery is insufficient, making it difficult to meet the heat dissipation requirements of high-power batteries. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes a sealed battery cooling connection pipe structure for new energy vehicles.

[0007] This utility model proposes a sealed battery cooling connection pipe structure for new energy vehicles, including a battery, an inlet pipe, an outlet pipe, and multiple cooling sections;

[0008] The water inlet pipe and the water outlet pipe are respectively located at both ends of the battery; the water inlet pipe is provided with multiple sets of first branch pipes, and the water outlet pipe is provided with multiple sets of second branch pipes, with the number of first branch pipes and second branch pipes corresponding one-to-one; a cooling section is provided between each set of corresponding first branch pipes and second branch pipes;

[0009] The battery is provided with multiple sets of parallel gaps, which divide the battery into multiple strip-shaped battery packs.

[0010] The cooling section is provided in multiple sets, and the multiple sets of cooling sections are respectively located in the gaps of the strip battery pack;

[0011] The cooling section includes two sets of bends: a first bend and a second bend. The first bend and the second bend are arranged one after the other and are located on the same horizontal plane.

[0012] The middle part of the first branch pipe is connected to one end of the first bend pipe, and the other end of the first bend pipe is connected to the end of the second branch pipe through the second connecting pipe;

[0013] The middle part of the second branch pipe is connected to one end of the second bend pipe, and the other end of the second bend pipe is connected to the end of the first branch pipe through the first connecting pipe.

[0014] Preferably, both the first and second bends are composed of continuous S-shaped pipes.

[0015] Preferably, both the first connecting pipe and the second connecting pipe are straight pipe structures.

[0016] Preferably, the inner diameter of the first connecting pipe is smaller than the inner diameter of the second bend pipe, and the inner diameter of the first connecting pipe is smaller than the inner diameter of the second connecting pipe, so as to create a fluid acceleration effect.

[0017] Preferably, the end of the first branch pipe is provided with a flow guiding structure, which is an inclined surface or arc surface that is inclined towards the first connecting pipe. The inclination angle of the inclined surface is 30°-60°, so as to guide the coolant to preferentially enter the second bend pipe.

[0018] Preferably, the cooling section is made of a thermally conductive metal.

[0019] The sealed battery cooling connection pipe structure for new energy vehicles proposed in this invention has the following advantages compared with the prior art:

[0020] Good cooling uniformity: By using a first and second bend pipe arranged in a front-to-back manner to dissipate heat from the front and rear parts of the battery respectively, the problem of reduced cooling effect at the rear end due to increased coolant temperature, which is common in traditional single bend pipe structures, is avoided, effectively reducing the temperature difference between the front and rear ends of the battery pack.

[0021] The continuous S-shaped tube structure increases the contact area between the coolant and the battery. Simultaneously, the optimized inner diameter design of the first connecting pipe creates a fluid acceleration effect, increasing the coolant flow rate and enhancing heat exchange efficiency. The cooling section is embedded in the gaps of the battery pack, fully utilizing the battery's internal space without requiring excessive additional space, which is beneficial for the miniaturization design of new energy vehicle battery systems. The cooling connecting pipe structure of this invention is rationally designed, with fewer components and a simple manufacturing process, reducing production costs. It effectively solves the problems of uneven cooling, low efficiency, and complex structure existing in battery cooling systems, demonstrating significant technical advantages and application prospects.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model.

[0025] The numbers in the diagram are explained as follows: 1. First bend in the pipe; 101. First connecting pipe; 2. Second bend in the pipe; 201. Second connecting pipe; 3. Inlet pipe; 301. First branch pipe; 4. Outlet pipe; 401. Second branch pipe. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] like Figures 1-2 The diagram illustrates a cooling connection pipe structure for a sealed battery in a new energy vehicle, comprising an inlet pipe 3, an outlet pipe 4, and multiple sets of cooling sections. The sealed battery is provided with multiple sets of parallel gaps, which divide the battery into multiple strip-shaped battery packs. The inlet pipe 3 and outlet pipe 4 are respectively arranged at both ends of the battery. The inlet pipe 3 has multiple sets of first branch pipes 301, and the outlet pipe 4 has multiple sets of second branch pipes 401. The number of first branch pipes 301 and second branch pipes 401 corresponds one-to-one. A cooling section is provided between each corresponding set of first branch pipes 301 and second branch pipes 401. Multiple sets of cooling sections are provided, each located within the gaps of the strip-shaped battery packs. Each cooling section includes two sets of bent pipes: a first bent pipe 1 and a second bent pipe 2, arranged sequentially and on the same horizontal plane. The middle part of the first branch pipe 301 is connected to one end of the first bent pipe 1, and the other end of the first bent pipe 1 is connected to the end of the second branch pipe 401 through the second connecting pipe 201; the middle part of the second branch pipe 401 is connected to one end of the second bent pipe 2, and the other end of the second bent pipe 2 is connected to the end of the first branch pipe 301 through the first connecting pipe 101.

[0028] Specifically, both the first bend pipe 1 and the second bend pipe 2 are composed of continuous S-shaped pipes. This structural design increases the contact area between the coolant and the battery, improving heat exchange efficiency. Both the first connecting pipe 101 and the second connecting pipe 201 are straight pipes to reduce fluid resistance and ensure smooth coolant flow.

[0029] To further improve the cooling effect, the present invention adopts the following optimized design:

[0030] The inner diameter of the first connecting pipe 101 is smaller than the inner diameter of the second bent pipe 2, and the inner diameter of the first connecting pipe 101 is smaller than the inner diameter of the second connecting pipe 201, so as to create a fluid acceleration effect. According to the principles of fluid mechanics, when fluid passes through a pipe with a smaller inner diameter, the flow velocity increases, thereby accelerating the speed at which the coolant enters the second bent pipe 2, ensuring the cooling effect of the coolant on the rear end of the battery.

[0031] The end of the first branch pipe 301 is provided with a flow guiding structure, which is an inclined surface or arc surface that slopes towards the first connecting pipe 101, and the inclination angle of the inclined surface is 30°-60°. This flow guiding structure can guide the coolant to preferentially enter the second bend pipe 2, further optimize the distribution of coolant, and improve the uniformity of overall battery cooling.

[0032] The cooling section is made of a thermally conductive metal, such as aluminum alloy or copper alloy, which has good thermal conductivity and can quickly transfer the heat generated by the battery to the coolant.

[0033] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new energy vehicle sealed battery cooling connection pipe structure, characterized in that, It includes a battery, an inlet pipe (3), an outlet pipe (4), and multiple cooling units; The water inlet pipe (3) and the water outlet pipe (4) are respectively located at both ends of the battery; the side wall of the water inlet pipe (3) is connected to multiple sets of first branch pipes (301), and the side wall of the water outlet pipe (4) is connected to multiple sets of second branch pipes (401), with the number of first branch pipes (301) and second branch pipes (401) corresponding one-to-one; a cooling section is provided between each set of corresponding first branch pipes (301) and second branch pipes (401); The battery has multiple sets of parallel gaps, which divide the battery into multiple strip-shaped battery packs; the cooling section has multiple sets, and the multiple sets of cooling sections are respectively located in the gaps of the strip-shaped battery packs; The cooling section includes a first bent pipe (1) and a second bent pipe (2), the first bent pipe (1) and the second bent pipe (2) are arranged one after the other and located on the same horizontal plane; The middle part of the first branch pipe (301) is connected to one end of the first bent pipe (1), and the other end of the first bent pipe (1) is connected to the end of the second branch pipe (401) through the second connecting pipe (201); The middle part of the second branch pipe (401) is connected to one end of the second bend pipe (2), and the other end of the second bend pipe (2) is connected to the end of the first branch pipe (301) through the first connecting pipe (101).

2. The sealed battery cooling connection pipe structure of a new energy vehicle according to claim 1, characterized in that, Both the first bend pipe (1) and the second bend pipe (2) are composed of continuous S-shaped pipes.

3. The sealed battery cooling connection pipe structure of a new energy vehicle according to claim 1, characterized in that, Both the first connecting pipe (101) and the second connecting pipe (201) are straight pipe structures.

4. The sealed battery cooling connection pipe structure of a new energy vehicle according to claim 1, characterized in that, The inner diameter of the first connecting pipe (101) is smaller than the inner diameter of the second bent pipe (2), and the inner diameter of the first connecting pipe (101) is smaller than the inner diameter of the second connecting pipe (201).

5. The sealed battery cooling connection pipe structure of a new energy vehicle according to claim 1, characterized in that, The cooling section is made of thermally conductive metal.

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