High-efficiency liquid cooling electric box

Abstract

The utility model relates to a high-efficiency liquid cooling electric box applied to the field of power equipment, which comprises a battery body, a cooling layer plate is arranged at the lower end of the battery body, the inner end of the cooling layer plate is fixedly connected with a snakelike cooling coil pipe, and the lower inner wall of the cooling layer plate is fixedly connected with a transverse electric guide rail. The output end of the transverse electric guide rail is fixedly connected with a sliding displacement block, the upper end of the sliding displacement block is fixedly connected with a follow-up bottom plate strip, the upper end of the follow-up bottom plate strip is fixedly connected with a plurality of arc-shaped hollow rings, and the arc-shaped hollow rings slide and displace on the outer side of the snake-shaped cooling coil. In the high-efficiency liquid cooling electric box, the flow state promoting mechanism is arranged on the outer side of the snakelike cooling coil to disturb fluid flow, destroy a thermal boundary layer, reduce thermal resistance and improve a heat transfer coefficient for a refrigerant in the snakelike cooling coil; therefore, the refrigeration efficiency of the battery body is guaranteed.

Description

Technical Field

[0001] This utility model relates to a liquid-cooled electrical box, and more particularly to a high-efficiency liquid-cooled electrical box for use in the field of power equipment. Background Technology

[0002] A liquid-cooled battery box is a device used to house and protect battery packs, employing liquid cooling technology to control battery temperature. When the battery pack generates heat during charging and discharging, a temperature sensor monitors the temperature changes in real time and transmits the temperature signal to a controller. Based on the temperature changes, the controller activates the pump in the liquid cooling system, causing the coolant to circulate within the liquid cooling pipes.

[0003] Chinese patent CN221552004U discloses a liquid-cooled battery box, including a first liquid-cooled plate, a second liquid-cooled plate disposed on one side of the first liquid-cooled plate, a first crossbeam disposed on the left and right sides of the first liquid-cooled plate and the second liquid-cooled plate, a second crossbeam disposed on the left and right sides of the first liquid-cooled plate and the second liquid-cooled plate, a rear plate disposed on one side of the first crossbeam, a front plate disposed on one side of the second crossbeam, and a water nozzle disposed on the front plate. The advantages of this utility model are that it has a simple structure, small size, convenient transportation, reduced customer usage costs, significantly reduced welding length, low production cost, and convenient installation and operation.

[0004] In the existing solution, when the serpentine cooling coil in the cooling plate is working, the refrigerant inside is in a laminar flow state, and a relatively stable thermal boundary layer will form near the pipe wall. This will hinder the transfer of heat. The presence of the thermal boundary layer makes the heat transfer from the inside of the cooling plate to the refrigerant more difficult, which means that the cooling plate cannot effectively remove the heat generated by the battery quickly, thereby reducing the overall cooling efficiency. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that when the serpentine cooling coil in the refrigeration plate is working, the refrigerant inside it is in a laminar flow state and a relatively stable thermal boundary layer is formed near the pipe wall. This hinders the transfer of heat. The presence of the thermal boundary layer makes the heat transfer from the inside of the refrigeration plate to the refrigerant more difficult, which causes the refrigeration plate to be unable to effectively remove the heat generated by the battery quickly, thereby reducing the overall cooling efficiency.

[0006] To address the aforementioned problems, this utility model provides a high-efficiency liquid-cooled battery box, including a battery body. A cooling plate is installed at the lower end of the battery body. A serpentine cooling coil is fixedly connected to the inner end of the cooling plate. A transverse electric guide rail is fixedly connected to the lower inner wall of the cooling plate. A sliding displacement block is fixedly connected to the output end of the transverse electric guide rail. A follower base plate is fixedly connected to the upper end of the sliding displacement block. Multiple arc-shaped hollow rings are fixedly connected to the upper end of the follower base plate. The multiple arc-shaped hollow rings slide and displace outside the serpentine cooling coil. A flow promotion mechanism is provided between the hollow ring and the serpentine cooling coil. The flow promotion mechanism includes multiple metal inner balls disposed on the inner wall of the serpentine cooling coil. A pair of reset wave springs are fixedly connected to the end of the metal inner balls near the inner wall of the serpentine cooling coil. The flow promotion mechanism also includes multiple self-rebound telescopic rods disposed on the inner wall of the hollow ring. A strong magnetic follower ball is fixedly connected to the end of the self-rebound telescopic rod away from the hollow ring. The flow promotion mechanism also includes a raised wave rack disposed on the outer wall of the serpentine cooling coil.

[0007] In the aforementioned high-efficiency liquid-cooled battery box, this solution uses a flow-promoting mechanism to interfere with the flow of the refrigerant inside the serpentine cooling coil on the outside of the coil. This causes the refrigerant, which may have been in a laminar flow state, to become turbulent. Interfering with the flow of the refrigerant can disrupt the thermal boundary layer, reduce thermal resistance, and improve the heat transfer coefficient, thereby enhancing the overall heat transfer efficiency of the serpentine cooling coil and ensuring the cooling efficiency of the battery body.

[0008] As a further improvement of this application, the raised wave rack includes multiple arc-shaped semi-circular protrusions, which are equidistant from each other in the horizontal direction.

[0009] As a further improvement of this application, a number of sturdy columns are fixedly connected to the lower end of the cooling plate, and the multiple sturdy columns are distributed in a rectangular shape on the lower side of the cooling plate.

[0010] As a further improvement of this application, the ends of the two reset wave springs away from the inner metal ball are fixedly connected to the inner wall of the serpentine cooling coil.

[0011] As another improvement of this application, a refrigeration circulation pump is connected to the serpentine cooling coil, and a circulation outer pipe is installed between the refrigeration circulation pump and the serpentine cooling coil.

[0012] As a further improvement to this application, the raised wavy rack and the corresponding strong magnetic follower ball cooperate with each other, and a metal heat-conducting layer is fixedly connected to the upper end of the cooling plate.

[0013] As a further improvement to this application, the metal thermally conductive layer is located between the cooling plate and the battery body, and the inner end of the serpentine cooling coil is filled with a certain amount of refrigerant.

[0014] In summary, during the left-right displacement of the arc-shaped hollow ring in the internal flow promotion mechanism of this scheme, the strong magnetic follower balls below the multiple self-rebound telescopic rods on its inner wall contact the corresponding raised wavy racks on the outer side of the serpentine cooling coil. This causes the strong magnetic follower balls to follow the irregular path of the raised wavy racks, resulting in flexible changes in their position. With the change in the path of the strong magnetic follower balls, they can magnetically approach and demagnetize the inner metal ball inside the serpentine cooling coil. Accompanied by the combined force of the spring movement of the inner metal ball following the return wave spring inside the serpentine cooling coil, the fluid flow is disturbed, causing the refrigerant, which may have been in a laminar flow state, to change to a turbulent flow state. This disturbance of the fluid flow can destroy the thermal boundary layer, reduce thermal resistance, and improve the heat transfer coefficient, thereby enhancing the overall heat transfer efficiency of the serpentine cooling coil and ensuring the cooling efficiency of the battery body. Attached Figure Description

[0015] Figure 1 This is an isometric view of the cooling plate according to the first embodiment of this application;

[0016] Figure 2 This is a front view of the external refrigeration circulation pump of the cooling plate according to the first embodiment of this application;

[0017] Figure 3 This is a front cross-sectional view of the cooling plate according to the second embodiment of this application;

[0018] Figure 4 This is a view of the arc-shaped hollow ring on the outside of the serpentine cooling coil according to the first embodiment of this application;

[0019] Figure 5 This is a partially enlarged cross-section view of the serpentine cooling coil according to the first embodiment of this application;

[0020] Figure 6 This is the first embodiment of the present application. Figure 5 Enlarged view of the flow-promoting mechanism in the middle phase;

[0021] Figure 7 This is an isometric view of the serpentine cooling coil with a convex wavy rack according to the first embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Cooling plate; 2. Battery body; 3. Serpentine cooling coil; 4. Circulation outer pipe; 5. Refrigeration circulation pump; 6. Metal heat-conducting layer; 7. Horizontal electric guide rail; 8. Sliding displacement block; 9. Arc-shaped hollow ring; 10. Raised corrugated rack; 11. Self-rebound telescopic rod; 12. Strong magnetic follower ball; 13. Metal inner ball; 14. Reset wave spring; 15. Follower base plate strip; 16. Stabilizing column. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figure 2-7 This invention illustrates a high-efficiency liquid-cooled battery box, comprising a battery body 2, a cooling plate 1 mounted on the lower end of the battery body 2, a serpentine cooling coil 3 fixedly connected to the inner end of the cooling plate 1, a transverse electric guide rail 7 fixedly connected to the lower inner wall of the cooling plate 1, a sliding displacement block 8 fixedly connected to the output end of the transverse electric guide rail 7, a follower base plate 15 fixedly connected to the upper end of the sliding displacement block 8, and multiple arc-shaped hollow rings 9 fixedly connected to the upper end of the follower base plate 15. The multiple arc-shaped hollow rings 9 slide and displace outside the serpentine cooling coil 3. A flow promotion mechanism is provided between the coils 3. The flow promotion mechanism includes multiple metal inner balls 13 disposed on the inner wall of the serpentine cooling coil 3. A pair of reset wave springs 14 are fixedly connected to the end of the metal inner ball 13 near the inner wall of the serpentine cooling coil 3. The flow promotion mechanism also includes multiple self-rebound telescopic rods 11 disposed on the inner wall of the arc-shaped hollow ring 9. A strong magnetic follower ball 12 is fixedly connected to the end of the self-rebound telescopic rod 11 away from the arc-shaped hollow ring 9. The flow promotion mechanism also includes a raised wave rack 10 disposed on the outer wall of the serpentine cooling coil 3.

[0027] Figure 2-7 The convex corrugated rack 10 includes multiple arc-shaped semi-circular protrusions, which are equidistantly arranged horizontally. Multiple stabilizing columns 16 are fixedly connected to the lower end of the cooling plate 1, and the multiple stabilizing columns 16 are rectangularly distributed on the lower side of the cooling plate 1. The ends of two reset wave springs 14 away from the inner metal ball 13 are fixedly connected to the inner wall of the serpentine cooling coil 3. A refrigeration circulation pump 5 is connected to the outside of the serpentine cooling coil 3. A circulation outer pipe 4 is installed between the refrigeration circulation pump 5 and the serpentine cooling coil 3. The convex corrugated rack 10 and the corresponding strong magnetic follower ball 12 cooperate with each other. The inner end of the serpentine cooling coil 3 is filled with a certain amount of refrigerant.

[0028] Figure 1-7This design features a serpentine cooling coil 3 installed in the cooling plate 1 below the battery body 2. The refrigerant in the serpentine cooling coil 3 circulates within the refrigeration circulation pump 5 via the external circulation pipe 4, allowing the refrigerant in the serpentine cooling coil 3 to quickly remove the heat generated by the battery body 2, thereby ensuring the normal operating efficiency of the battery body 2. Multiple arc-shaped hollow rings 9 are installed outside the serpentine cooling coil 3, driven laterally by a transverse electric guide rail 7. A flow-promoting mechanism exists between the multiple arc-shaped hollow rings 9 and their corresponding serpentine cooling coils 3. During the left-right displacement of the arc-shaped hollow rings 9, the strong magnetic follower balls 12 below the multiple self-rebound telescopic rods 11 on their inner walls contact the corresponding raised corrugated racks 10 on the outer side of the serpentine cooling coil 3, causing the strong magnetic follower balls 12 to follow the irregular movement of the raised corrugated racks 10. The path allows the position of the strong magnetic follower ball 12 to change flexibly. With the change of the path of the strong magnetic follower ball 12, the strong magnetic follower ball 12 can move close to and away from the metal inner ball 13 in the serpentine cooling coil 3 by magnetic cyclic movement. With the metal inner ball 13 following the spring force of the reset wave spring 14 in the serpentine cooling coil 3, the fluid flow is disturbed, so that the refrigerant that may be in a laminar flow state is transformed into a turbulent flow state. The fluid in the turbulent state has a higher degree of mixing and greater velocity fluctuation, which allows heat to be transferred more quickly inside the fluid and exchanged between the fluid and the pipe wall of the serpentine cooling coil 3. Disturbing the fluid flow can destroy the thermal boundary layer, reduce thermal resistance, and improve the heat transfer coefficient, thereby enhancing the overall heat transfer efficiency of the serpentine cooling coil 3, and thus ensuring the cooling efficiency of the battery body 2.

[0029] Second implementation method:

[0030] Figure 3 A high-efficiency liquid-cooled battery box is shown. A metal heat-conducting layer 6 is fixedly connected to the upper end of the cooling plate 1. The metal heat-conducting layer 6 is located between the cooling plate 1 and the battery body 2. The metal heat-conducting layer 6 is provided on the connection surface between the cooling plate 1 and the battery body 2. The metal heat-conducting layer 6 can increase the heat conduction area and improve the heat conduction speed, thereby improving the heat dissipation efficiency of the battery body 2 and extending the service life of the battery body 2.

[0031] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A high-efficiency liquid-cooled electrical box, characterized in that: The system includes a battery body (2), a cooling plate (1) installed at the lower end of the battery body (2), a serpentine cooling coil (3) fixedly connected to the inner end of the cooling plate (1), a transverse electric guide rail (7) fixedly connected to the lower inner wall of the cooling plate (1), a sliding displacement block (8) fixedly connected to the output end of the transverse electric guide rail (7), a follower base plate strip (15) fixedly connected to the upper end of the sliding displacement block (8), and multiple arc-shaped hollow rings (9) fixedly connected to the upper end of the follower base plate strip (15). The multiple arc-shaped hollow rings (9) slide and displace outside the serpentine cooling coil (3). The arc-shaped hollow rings (9) and the serpentine cooling coil (3) are connected to the serpentine cooling coil (3). A flow-promoting mechanism is provided between the coils (3). The flow-promoting mechanism includes multiple metal inner balls (13) provided on the inner wall of the serpentine cooling coil (3). A pair of reset wave springs (14) are fixedly connected to one end of the metal inner ball (13) near the inner wall of the serpentine cooling coil (3). The flow-promoting mechanism also includes multiple self-rebound telescopic rods (11) provided on the inner wall of the arc-shaped hollow ring (9). A strong magnetic follower ball (12) is fixedly connected to one end of the self-rebound telescopic rod (11) away from the arc-shaped hollow ring (9). The flow-promoting mechanism also includes a raised wave rack (10) provided on the outer wall of the serpentine cooling coil (3).

2. The high-efficiency liquid-cooled electrical box according to claim 1, characterized in that: The raised wave toothed rack (10) includes multiple arc-shaped semi-circular protrusions, which are equidistant from each other in the horizontal direction.

3. The high-efficiency liquid-cooled electrical box according to claim 1, characterized in that: The lower end of the cooling plate (1) is fixedly connected to a plurality of sturdy columns (16), which are arranged in a rectangular pattern on the lower side of the cooling plate (1).

4. The high-efficiency liquid-cooled electrical box according to claim 1, characterized in that: The ends of the two reset wave springs (14) away from the inner metal ball (13) are fixedly connected to the inner wall of the serpentine cooling coil (3).

5. A high-efficiency liquid-cooled electrical box according to claim 1, characterized in that: The serpentine cooling coil (3) is connected to a refrigeration circulation pump (5), and a circulation outer pipe (4) is installed between the refrigeration circulation pump (5) and the serpentine cooling coil (3).

6. A high-efficiency liquid-cooled electrical box according to claim 1, characterized in that: The raised wave toothed rack (10) and the corresponding strong magnetic follower ball (12) cooperate with each other, and the upper end of the cooling plate (1) is fixedly connected with a metal heat-conducting layer (6).

7. A high-efficiency liquid-cooled electrical box according to claim 6, characterized in that: The metal heat-conducting layer (6) is located between the cooling plate (1) and the battery body (2), and the inner end of the serpentine cooling coil (3) is filled with a certain amount of refrigerant.

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