Cooling liquid spraying pipeline

Abstract

The utility model relates to a cooling liquid spraying pipeline which comprises a main runner and a branch runner communicated with the main runner, the cross sectional area of the main runner is larger than that of the branch runner, and the cross sectional area of the main runner is gradually reduced from one end close to a liquid inlet to one end far away from the liquid inlet. According to the spraying pipeline for the energy storage battery module, the flowing speed is not reduced due to resistance along with the deepening of the flowing path, and the consistency of flowing resistance is ensured, so that the relatively stable flowing speed of the cooling liquid is kept, and the heat dissipation efficiency and the heat dissipation balance of the spraying pipeline for the energy storage battery module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module heat dissipation, in particular to a coolant spraying pipeline. Background Art

[0002] The global environmental protection and the reduction of traditional energy have promoted the rapid development of the new energy energy storage market, making the charging and discharging frequency of batteries higher and higher. However, during the charging and discharging process of the battery module, the temperature continues to rise but cannot dissipate heat in time by itself, which will affect the performance of the battery, such as safety, charging and discharging capacity and efficiency, cycle life, etc. The normal operating temperature of the battery is generally between 15°C and 45°C. When the temperature exceeds this range, the performance of the battery will begin to decline, and there is even a risk of spontaneous combustion and explosion.

[0003] In the existing technology, such as the Chinese patent with the publication number CN218975557U, it discloses a battery cooling device, including a unit radiator kit, which has: a radiator group formed by connecting a plurality of radiators in parallel; and a main flow pipe connected to the radiator group. The main flow pipe has: a connection part to which the main flow pipes of other unit radiator kits can be connected in a pluggable manner; and a main flow rate adjustment valve for adjusting the flow rate of the refrigerant flowing from the main flow pipe to the radiator group.

[0004] The above-mentioned existing technical solutions have the following defects:

[0005] When the coolant enters the flow channel, due to the gradually increasing resistance, the flow rate at the front end is fast while the flow rate at the rear end is slow. This problem of uneven flow rate is particularly obvious in the radiator group connected in parallel. The front radiator may be over-cooled due to the too fast flow rate, while the rear radiator may be under-cooled due to the too slow flow rate, resulting in uneven temperature distribution inside the entire battery module and affecting the performance and life of the battery.

[0006] Although the main flow rate adjustment valve is introduced in the technical solution to control the flow rate of the refrigerant, this adjustment may not be accurate enough for the subtle differences in each radiator or within the radiator group. Due to the fundamental problem of uneven flow rate not being solved, the adjustment effect of the main flow rate adjustment valve may be limited and cannot fully compensate for the cooling efficiency differences caused by uneven flow rate. Summary of the Utility Model

[0007] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a coolant spraying pipeline, which has the effects of comprehensively dissipating heat from the outer wall of the energy storage battery, improving the heat dissipation efficiency, and improving the balance of the heat dissipation of the spraying pipeline for the energy storage battery module.

[0008] The above-mentioned utility model purpose of the utility model is achieved through the following technical solutions:

[0009] A coolant spray pipeline, including a main pipe, a main flow channel is provided in the main pipe, a liquid inlet communicating with the main flow channel is provided at one end of the main pipe, and a liquid outlet is provided on the main pipe;

[0010] The cross-sectional area of the main flow channel gradually decreases from the end close to the liquid inlet to the end far from the liquid inlet.

[0011] As a further technical solution of the present invention: a plurality of flow dividing plates are evenly distributed on both sides of the main pipe along its length direction, a flow dividing channel communicating with the main flow channel is provided in the flow dividing plate; a spray hole communicating with the flow dividing channel is provided at the bottom of the flow dividing plate; the coolant flows into the main flow channel from the liquid inlet, and after passing through a plurality of the flow dividing channels, it is sprayed out from the spray holes of each flow dividing plate, and the spray pipeline is arranged above the energy storage battery module.

[0012] The flow dividing plates on both sides of the main pipe are arranged in a uniformly staggered manner.

[0013] As a further technical solution of the present invention: the cross-sectional area of the main flow channel is larger than the cross-sectional area of the flow dividing channel.

[0014] As a further technical solution of the present invention: the connection part between one end of the flow dividing plate and the main pipe is arranged in an arc shape.

[0015] As a further technical solution of the present invention: the connection part between the bottom wall of the main flow channel and the bottom wall of the flow dividing channel is arranged with an arc surface transition.

[0016] As a further technical solution of the present invention: the spray hole is provided at the bottom of the end of the flow dividing plate far from the main pipe.

[0017] As a further technical solution of the present invention: characterized in that, a plurality of positioning plates are provided on the side wall of the main pipe, the plurality of positioning plates and the plurality of flow dividing plates are evenly spaced, and positioning holes are respectively provided on the plurality of positioning plates.

[0018] As a further technical solution of the present invention: on both sides of the plurality of positioning plates, reinforcing ribs are integrally formed and fixedly connected, and the reinforcing ribs are integrally formed and fixedly connected with the side wall of the main pipe.

[0019] As a further technical solution of the present invention: one end of the main pipe provided with the liquid inlet is provided with a mounting plate, and two mounting holes are provided on the mounting plate.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects:

[0021] 1. The utility model discloses a coolant spraying pipeline. By setting the cross-sectional area of the main flow channel to be larger than that of the sub-flow channels and the cross-sectional area of the main flow channel gradually decreasing from the end near the liquid inlet to the end far from the liquid inlet, the flow velocity will not decrease due to resistance as the flow path deepens, ensuring the consistency of the flow resistance. Thus, the coolant maintains a relatively stable flow velocity, improving the heat dissipation efficiency and balance of the spraying pipeline for the energy storage battery module.

[0022] 2. The utility model discloses a coolant spraying pipeline. By setting the connection part between one end of the flow dividing plate and the main pipe to be arc-shaped, a fillet transition at the connection between the main pipe and the flow dividing plate is achieved, thereby reducing the flow resistance and enabling the spraying liquid to enter the flow dividing plate more smoothly. This helps to maintain the flow stability of the spraying liquid in the flow channel and avoid the unevenness of the spraying liquid caused by eddy currents or turbulences generated during flow turning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural view of the main flow channel of the present utility model;

[0024] Figure 2 It is a schematic overall structural view of the present utility model;

[0025] Figure 3 It is a cross-sectional view of the present utility model;

[0026] Figure 4 It is Figure 3 a partially enlarged schematic view of part C in

[0027] Figure 5 It is Figure 2 a partially enlarged schematic view of part A in

[0028] Figure 6 It is a bottom view of the present utility model;

[0029] Figure 7 It is Figure 6 a partially enlarged schematic view of part B in

[0030] Reference numerals: 1, main pipe; 11, main flow channel; 12, first side wall; 13, second side wall; 2, flow dividing plate; 21, sub-flow channels; 22, spray holes; 23, left side wall; 24, right side wall; 3, liquid inlet; 4, positioning plate; 41, positioning holes; 42, reinforcing ribs; 43, inclined surface; 5, mounting plate; 51, mounting holes. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on this embodiment, they all belong to the scope protected by the present application.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. indicate the orientation or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0034] When the coolant flows in the main flow channel 11, due to the influence of various resistances (such as frictional resistance, form resistance, etc.), the flow velocity will gradually decrease as the flow path deepens. Since the flow velocity is inversely proportional to the cross-sectional area of the main flow channel 11, and the cross-sectional area of the main flow channel 11 gradually becomes smaller, the flow velocity will not decrease due to the resistance as the flow path deepens, thereby maintaining a relatively consistent flow velocity and improving the heat dissipation efficiency and heat dissipation balance of the spray pipeline for the energy storage battery module.

[0035] Such as Figure 1 , a coolant spray pipeline, including a main pipe 1. A main flow channel 11 is opened in the main pipe 1. A liquid inlet 3 communicating with the main flow channel 11 is opened at one end of the main pipe 1, and a liquid outlet is provided on the main pipe 1. The main pipe 11 includes a first side wall 12 and a second side wall 13. The distance between the first side wall 12 and the second side wall 13 gradually becomes smaller from the end close to the liquid inlet 3 to the end far from the liquid inlet 3, that is, the cross-sectional area of the main flow channel 11 gradually becomes smaller from the end close to the liquid inlet 3 to the end far from the liquid inlet 3. When the coolant flows in the main flow channel 11, due to the influence of various resistances (such as frictional resistance, form resistance, etc.), the flow velocity will gradually decrease as the flow path deepens. Since the flow velocity is inversely proportional to the cross-sectional area of the main flow channel 11, and the cross-sectional area of the main flow channel 11 gradually becomes smaller, the flow velocity will not decrease due to the resistance as the flow path deepens, thereby maintaining a relatively consistent flow velocity and improving the heat dissipation efficiency and heat dissipation balance of the spray pipeline for the energy storage battery module.

[0036] As shown in Figure 2 , on both sides of the main pipe 1 along its length direction, a plurality of flow dividing plates 2 are evenly distributed. The flow dividing plates 2 are arranged in a uniformly staggered manner. A flow dividing channel 21 communicating with the main flow channel 11 is opened in the flow dividing plate 2, and a spray hole 22 communicating with the flow dividing channel 21 is opened at the bottom of the flow dividing plate 2. In this embodiment, the liquid outlet is a plurality of spray holes 22; the coolant flows into the main flow channel 11 from the liquid inlet 3, and after passing through a plurality of flow dividing channels 21, it is sprayed out from the spray holes 22 of each flow dividing plate 2 and sprayed on the energy storage battery module, forming a uniform spraying effect on the energy storage battery module, so as to achieve uniform heat dissipation of the energy storage battery module. Preferably, the spray holes 22 are opened at the bottom of the end of the flow dividing plate 2 away from the main pipe 1, and the spray holes 22 spray the coolant on the top of the battery module, taking away the heat at the top, expanding the heat dissipation area, and further improving the heat dissipation efficiency.

[0037] As shown in Figure 3 , the cross-sectional area of the main flow channel 11 is larger than that of the flow dividing channel 21. By gradually reducing the cross-sectional area of the connection between one end of the flow dividing plate 2 and the main pipe 1, a Venturi effect is formed, increasing the water flow speed and improving the spraying pressure, so that the sprayed coolant is more concentrated and powerful.

[0038] As shown in Figure 4 , preferably, the connection between the bottom wall of the main flow channel 11 and the bottom wall of the flow dividing channel 21 is arranged with an arc transition. The cross-sectional area of the main flow channel 11 gradually becomes smaller from the end close to the liquid inlet 3 to the end far from the liquid inlet 3. The height of the main flow channel 11 is greater than the height of the flow dividing channel 21, resulting in the water flow being squeezed when passing through, forming a more concentrated water flow and spraying out from the spray holes 22, improving the spraying effect. At the same time, the thickness of the flow dividing plate 2 is smaller than the thickness of the main pipe 1, which is convenient for installing the spraying pipeline on the energy storage battery module.

[0039] One end of the flow dividing plate 2 is arranged in an arc shape at the connection with the main pipe 1, so that the distance between the left side wall 23 and the right side wall 24 at the connection of one end of the flow dividing plate 2 and the main pipe 1 gradually becomes smaller from the end close to the main flow channel to the end close to the flow dividing plate 2, realizing a fillet transition at the connection of the main pipe 1 and the flow dividing plate 2. This helps to reduce the contact area between the sprayed liquid and the pipe wall of the main pipe 1 when the flow direction of the sprayed liquid turns, thereby reducing the flow resistance, enabling the sprayed liquid to enter the flow dividing plate 2 more smoothly, and helping to maintain the flow stability of the sprayed liquid in the flow channel, avoiding the unevenness of the sprayed liquid caused by the vortex or turbulence generated during the flow direction change. At the same time, this structure can relieve the impact of the coolant in the main flow channel 11 on the connection of one end of the flow dividing plate 2 and the main pipe 1, avoiding the damage of the connection of one end of the flow dividing plate 2 and the main pipe 1 and affecting the function of the spraying pipeline for the energy storage battery module.

[0040] As shown in Figure 5The side wall of the main pipe 1 is provided with a plurality of positioning plates 4, which are evenly distributed with the plurality of diverter plates 2. Positioning holes 41 are respectively provided on the positioning plates 4, which can cooperate with the battery module to realize the rapid installation and accurate positioning of the spray pipeline. The positioning plates 4 and the diverter plates 2 on the side wall of the main pipe 1 are evenly distributed with each other, ensuring that the spray pipeline has reliable installation and positioning points in the length direction.

[0041] Preferably, the positioning hole 41 is a waist-shaped hole, which can accommodate different fasteners, such as bolts, nuts, etc., and the spray pipe is tightly connected to the external mounting structure (such as the battery module frame) through the fasteners to ensure that the spray pipe will not be displaced or loosened during use.

[0042] like Figure 5 , the two sides of the positioning plate 4 are integrally formed and fixedly connected with reinforcing ribs 42, and the reinforcing ribs 42 are integrally formed and fixedly connected with the side wall of the main pipe 1. The design of the reinforcing ribs 42 increases the bending and torsion resistance of the positioning plate 4, so that the positioning plate 4 can maintain its shape and position unchanged when subjected to external loads. At the same time, the integrally formed fixed connection between the reinforcing ribs 42 and the side wall of the main pipe 1 ensures a firm connection between the reinforcing ribs 42 and the main pipe 1, further enhancing the overall strength and stability of the spray pipeline.

[0043] The reinforcing rib 42 is provided with a slope 43 at one end away from the side wall of the main pipe 1 to prevent the positioning plate 4 from being scratched during use, effectively prevent the positioning plate 4 from being deformed or damaged during use, and further improve the reliability and safety of the spray pipeline in the energy storage battery module.

[0044] like Figure 6 and Figure 7 The main pipe 1 is provided with a mounting plate 5 at one end of the liquid inlet 3, and two mounting holes 51 are provided on the mounting plate 5. The two mounting holes 51 on the mounting plate 5 can be matched with the connectors of the external device or system (such as the energy storage battery module, etc.), and the spray pipe is tightly connected to the energy storage battery module through bolts or other fasteners.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coolant spray pipeline, comprising a main pipe (1), characterized in that: A main flow channel (11) is provided in the main pipe (1), a liquid inlet (3) communicating with the main flow channel (11) is provided at one end of the main pipe (1), and a liquid outlet is provided on the main pipe (1); The cross-sectional area of ​​the main flow channel (11) gradually decreases from an end close to the liquid inlet (3) to an end far from the liquid inlet (3).

2. A coolant spray pipeline according to claim 1, characterized in that: The main pipe (1) is provided with a plurality of flow dividers (2) evenly distributed on both sides along the length direction thereof, and the flow dividers (2) are provided in the flow dividers (2) and are connected to the main pipe (11); The bottom of the diverter plate (2) is provided with a spray hole (22) which is in communication with the diverter channel (21); The coolant flows into the main channel (11) from the liquid inlet (3), passes through the plurality of branch channels (21), and is sprayed out from the spray holes (22) of each of the branch plates (2), and the spray pipeline is arranged above the energy storage battery module.

3. A coolant spray pipeline according to claim 2, characterized in that: The flow dividers (2) on both sides of the main pipe (1) are evenly staggered.

4. A coolant spray pipeline according to claim 3, characterized in that: The cross-sectional area of ​​the main flow channel (11) is greater than the cross-sectional area of ​​the branch flow channel (21).

5. A coolant spray pipeline according to claim 4, characterized in that: The connection between one end of the diverter plate (2) and the main pipe (1) is arranged in an arc shape.

6. A coolant spray pipeline according to claim 4, characterized in that: The connection between the bottom wall of the main flow channel (11) and the bottom wall of the branch flow channel (21) is arranged in an arc-shaped transition.

7. A coolant spray pipeline according to claim 2, characterized in that: The spray hole (22) is provided at the bottom of the end of the flow dividing plate (2) away from the main pipe (1).

8. A coolant spray pipeline according to any one of claims 1 to 7, characterized in that: The side wall of the main pipe (1) is provided with a plurality of positioning plates (4), the plurality of positioning plates (4) and the plurality of flow dividers (2) are evenly distributed alternately, and the plurality of positioning plates (4) are respectively provided with positioning holes (41).

9. A coolant spray pipeline according to claim 8, characterized in that: Both sides of the plurality of positioning plates (4) are integrally formed and fixedly connected with reinforcing ribs (42), and the reinforcing ribs (42) are integrally formed and fixedly connected with the side walls of the main pipe (1).

10. A coolant spray pipeline according to claim 8, characterized in that: One end of the main pipe (1) having a liquid inlet (3) is provided with a mounting plate (5), and the mounting plate (5) is provided with two mounting holes (51).

Images