Coil pipe type battery pack liquid cooling plate

Abstract

The utility model relates to the technical field of battery pack heat dissipation, in particular to a coil pipe type battery pack liquid cooling plate, which comprises a liquid cooling plate, a plurality of groups of U-shaped cooling pipes are transversely arranged on the surface of the top end of the liquid cooling plate at equal intervals to form a coil pipe type structure, a water injection tank is arranged at one end of a water inlet of each cooling pipe, and a plurality of heating sheets are arranged on the inner wall of the water injection tank. One end of a water outlet of the cooling pipe is connected with a drainage box, a guide groove is formed in the inner side of the cooling pipe, reinforcing ribs are symmetrically arranged in the cooling pipe, guide blocks matched with the guide groove in structure are arranged at the two ends of each reinforcing rib, and the surface of each reinforcing rib protrudes outwards to form a protrusion. The coil pipe type battery pack liquid cooling plate has the advantages of being small in size, convenient to install and arrange, suitable for an environment with a limited space, high in efficiency, capable of rapidly and effectively reducing the temperature of the battery, low in energy consumption and beneficial to reducing the energy cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack heat dissipation, in particular to a coil-type battery pack liquid cooling plate. Background Art

[0002] With the rapid development of the new energy vehicle industry, electric vehicles are becoming a mainstream choice in the market. As a core component of electric vehicles, the performance of batteries directly impacts the vehicle's range and safety. In practice, batteries generate significant heat during discharge and charging. If heat is not promptly dissipated, the battery temperature can overheat, impacting its lifespan and safety. Therefore, an effective heat dissipation system is crucial for improving battery performance.

[0003] Currently, the most common battery pack heat dissipation method on the market mainly uses liquid cooling plates for bottom contact heat dissipation to reduce the continuous temperature rise of the battery pack. However, the existing liquid cooling plate design has some shortcomings. First, the flow rate of the coolant inside the cooling tube is an important factor determining the cooling efficiency of the battery pack. However, the power to increase the flow rate of the coolant inside the cooling tube comes from the battery pack. Therefore, when the coolant flow rate is increased, the heat emitted by the battery will also increase, resulting in low heat exchange efficiency of the liquid cooling plate. Secondly, in a cold weather environment, the cold air will affect the batteries inside the battery pack, thereby reducing the battery life. Utility Model Content

[0004] The purpose of the present invention is to provide a coil-type battery pack liquid cooling plate to solve the problems raised in the above background art that the liquid cooling plate currently used for heat dissipation of battery packs has low efficiency and affects battery performance in cold weather.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a coil-type battery pack liquid cooling plate, comprising a liquid cooling plate, a top surface of the liquid cooling plate having a plurality of groups of U-shaped cooling tubes arranged at equal intervals laterally to form a coil-type structure, a water filling tank being provided at one end of the water inlet of the cooling tube, a water inlet pipe being fixedly connected to the side of the water filling tank away from the liquid cooling plate, a plurality of heating plates being provided on the inner wall of the water filling tank, a water outlet end of the cooling tube being connected to a drainage box, a drainage pipe being fixedly connected to the side of the drainage box away from the liquid cooling plate, a guide groove being provided on the inner side of the cooling tube, reinforcing ribs being symmetrically provided on the inside of the cooling tube, guide blocks being provided at both ends of the reinforcing ribs that are compatible with the guide groove structure, and the surface of the reinforcing ribs protruding outwards to form a bulge.

[0006] Preferably, a plurality of limiting holes are provided on the surface of the liquid cooling plate, and the limiting holes pass through the upper and lower surfaces of the liquid cooling plate.

[0007] Preferably, the bottom end of the liquid cooling plate is fixedly connected to a heat dissipation fin, and the end of the heat dissipation fin away from the liquid cooling plate is fixedly connected to a bottom plate.

[0008] Preferably, the water inlet of the cooling pipe is connected to the water outlet of the water injection tank, and the water outlet of the cooling pipe is connected to the water inlet of the drainage tank.

[0009] Preferably, the heating plates are fixedly connected to the inner wall of the water filling box, and the heating plates are distributed in an array inside the water filling box.

[0010] Preferably, two groups of the reinforcing ribs are provided inside the cooling pipe, and the reinforcing ribs and the guide block are an integral structure.

[0011] Compared with the existing technology, the beneficial effects of the present invention are as follows: the coil-type battery pack liquid cooling plate is small in size, easy to install and arrange, suitable for environments with limited space, and highly efficient, able to quickly and effectively reduce battery temperature, while having low energy consumption, which helps to reduce energy costs. The coil-type battery pack liquid cooling plate, through the design of the water filling tank and heating plate, can preheat the coolant in cold weather to prevent battery performance degradation. The reinforcing ribs and protrusions inside the cooling tube not only improve the structural strength of the cooling tube, but also accelerate the flow rate of the coolant by increasing the water pressure of the coolant, further improving the heat dissipation effect. The heat dissipation fins and base plate design at the bottom of the liquid cooling plate enhance the heat dissipation performance and mechanical support of the liquid cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a coil-type battery pack liquid cooling plate of the utility model;

[0013] Figure 2 This is a schematic diagram of the top structure of a coil-type battery pack liquid cooling plate of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the water filling box of a coil-type battery pack liquid cooling plate of the present utility model;

[0015] Figure 4 This is a schematic diagram of the internal structure of the cooling tube of a coil-type battery pack liquid cooling plate of the present invention;

[0016] Figure 5 This utility model is a coil type battery pack liquid cooling plate Figure 1 Enlarged structural diagram at point A in the middle.

[0017] In the figure: 1. Liquid cooling plate; 2. Cooling pipe; 3. Water filling tank; 4. Water inlet pipe; 5. Heating plate; 6. Drain box; 7. Drain pipe; 8. Limiting hole; 9. Guide groove; 10. Reinforcement rib; 11. Guide block; 12. Protrusion; 13. Heat dissipation fin; 14. Base plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-5The utility model provides a technical solution: a coil-type battery pack liquid cooling plate, comprising a liquid cooling plate 1, a plurality of groups of U-shaped cooling tubes 2 are arranged at equal intervals laterally on the top surface of the liquid cooling plate 1 to form a coil-type structure, a water filling tank 3 is provided at one end of the water inlet of the cooling tube 2, a water inlet pipe 4 is fixedly connected to the side of the water filling tank 3 away from the liquid cooling plate 1, a plurality of heating plates 5 are provided on the inner wall of the water filling tank 3, a water outlet end of the cooling tube 2 is connected to a drainage box 6, a drainage pipe 7 is fixedly connected to the side of the drainage box 6 away from the liquid cooling plate 1, and a guide groove 9 is provided on the inner side of the cooling tube 2, and reinforcing ribs 10 are symmetrically provided on the inside of the cooling tube 2, and guide blocks 11 adapted to the guide groove 9 structure are provided at both ends of the reinforcing rib 10, and the surface of the reinforcing rib 10 protrudes outward to form a protrusion 12. The structure can quickly install the reinforcing rib 10 into the interior of the cooling pipe 2 through the cooperation of the guide groove 9 and the guide block 11, that is, the reinforcing rib 10 is accurately matched with the guide groove 9 on the inner side of the cooling pipe 2 through the guide block 11, so that the reinforcing rib 10 can be smoothly embedded in the interior of the cooling pipe 2 and firmly fixed in the specified position. In this way, the reinforcing rib 10 is in close contact with the inner wall of the cooling pipe 2 through the protrusion 12, which not only increases the structural strength and pressure resistance of the cooling pipe 2, but also increases the water pressure of the coolant when flowing through the surface of the protrusion 12 by reducing the diameter of the flow port of the cooling pipe 2, thereby accelerating the flow rate of the coolant. This accelerated flow effect significantly improves the heat dissipation efficiency of the coolant to the battery module, ensuring the stable operation of the battery under high temperature conditions. At the same time, the water tank 3 is filled with water through the inlet The water pipe 4 transports coolant to the cooling pipe 2. The heating plate 5 inside the water filling tank 3 can preheat the coolant to prevent cold weather from damaging the battery. The cooled coolant enters the drainage tank 6 through the water outlet of the cooling pipe 2 and is discharged through the drainage pipe 7. The entire circulation process is efficient and reliable, ensuring that the temperature of the battery pack is controlled within the optimal range, solving the problems in the prior art of low coolant flow rate leading to low heat exchange efficiency and large impact of cold weather on battery performance. Several limiting holes 8 are provided on the surface of the liquid cooling plate 1, and the limiting holes 8 pass through the upper and lower surfaces of the liquid cooling plate 1. The limiting holes 8 of this structure can firmly fix the liquid cooling plate 1 inside the battery pack by cooperating with the fixing device inside the battery pack, ensuring that the liquid cooling plate 1 will not be shaken or damaged during vehicle driving. The bottom end of the liquid cooling plate 1 is fixedly connected to the heat dissipation fin 13, and the end of the heat dissipation fin 13 away from the liquid cooling plate 1 is fixedly connected to the bottom plate 14. The heat dissipation fin 13 of this structure increases the contact area between the liquid cooling plate 1 and the surrounding air, effectively improving the heat dissipation efficiency. The bottom plate 14 not only provides additional mechanical support to ensure that the liquid cooling plate 1 remains stable during vehicle driving, but also further enhances the heat dissipation effect, ensuring that the temperature of the battery pack is controlled within the optimal range under various working conditions. The water inlet of the cooling pipe 2 is connected to the water outlet of the water filling tank 3, and the water outlet of the cooling pipe 2 is connected to the water inlet of the drainage tank 6.The water filling tank 3 and the drainage tank 6 of this structure form a closed coolant circulation system, that is, the water filling tank 3 transports coolant to the cooling pipe 2 through the water inlet pipe 4. After the heat exchange inside the cooling pipe 2, the coolant enters the drainage tank 6 through the water outlet of the cooling pipe 2 and is discharged through the drainage pipe 7. This ensures the continuous circulation of the coolant in the system, improves the cooling efficiency, and simplifies the maintenance and management of the system. The heating plate 5 is fixedly connected to the inner wall of the water filling tank 3, and the heating plate 5 is distributed in an array inside the water filling tank 3. The heating plate 5 of this structure ensures the cooling The coolant is evenly heated before entering the cooling tube 2, which not only improves heating efficiency but also ensures temperature uniformity of the coolant, preventing local overheating or overcooling. Two sets of reinforcing ribs 10 are provided inside the cooling tube 2, and the reinforcing ribs 10 and the guide block 11 are an integrated structure. This structure significantly improves the structural strength and pressure resistance of the cooling tube 2. Furthermore, the reinforcing ribs 10 can precisely match the guide grooves 9 inside the cooling tube 2 through the guide block 11, ensuring that the reinforcing ribs 10 can be smoothly installed and firmly fixed inside the cooling tube 2.

[0020] Working principle: When using the coil-type battery pack liquid cooling plate, first fix the liquid cooling plate 1 inside the battery pack through the limiting hole 8 to ensure that the liquid cooling plate 1 will not shift due to vibration or impact during vehicle driving. Then the coolant enters the water filling tank 3 through the water inlet pipe 4, and the heating plate 5 preheats the coolant inside the water filling tank 3 to prevent cold weather from damaging the battery. The preheated coolant flows from the water outlet of the water filling tank 3 into the water inlet of the cooling pipe 2. The coolant flows inside the cooling pipe 2. Through the design of the reinforcing ribs 10 and protrusions 12 inside the cooling pipe 2, the water pressure of the coolant is increased, which accelerates the flow rate of the coolant and improves the heat dissipation efficiency. The cooled coolant flows from the water outlet of the cooling pipe 2 into the drain tank 6 and is discharged through the drain pipe 7. The entire coolant circulation process is efficient and reliable. At the same time, the heat dissipation fins 13 at the bottom of the liquid cooling plate 1 further improve the heat dissipation performance, and the bottom plate 14 enhances the mechanical support of the liquid cooling plate 1, ensuring the stable operation of the battery pack under various working conditions, thereby completing a series of tasks.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coil-type battery pack liquid cooling plate, comprising a liquid cooling plate (1), characterized in that: A plurality of groups of U-shaped cooling tubes (2) are arranged at equal intervals in the transverse direction on the top surface of the liquid cooling plate (1) to form a coil structure. A water injection box (3) is provided at one end of the water inlet of the cooling tube (2). A water inlet pipe (4) is fixedly connected to the side of the water injection box (3) away from the liquid cooling plate (1). A plurality of heating plates (5) are provided on the inner wall of the water injection box (3). A water outlet of the cooling tube (2) is connected to a drainage box (6). A drainage pipe (7) is fixedly connected to the side of the drainage box (6) away from the liquid cooling plate (1). A guide groove (9) is provided on the inner side of the cooling tube (2). Reinforcement ribs (10) are symmetrically provided inside the cooling tube (2). Guide blocks (11) adapted to the guide groove (9) structure are provided at both ends of the reinforcement rib (10), and the surface of the reinforcement rib (10) protrudes outward to form a protrusion (12).

2. The coil-type battery pack liquid cooling plate according to claim 1, characterized in that: A plurality of limiting holes (8) are provided on the surface of the liquid cooling plate (1), and the limiting holes (8) pass through the upper and lower surfaces of the liquid cooling plate (1).

3. The coil-type battery pack liquid cooling plate according to claim 1, characterized in that: The bottom end of the liquid cooling plate (1) is fixedly connected to a heat dissipation fin (13), and one end of the heat dissipation fin (13) away from the liquid cooling plate (1) is fixedly connected to a bottom plate (14).

4. The coil-type battery pack liquid cooling plate according to claim 1, characterized in that: The water inlet of the cooling pipe (2) is connected to the water outlet of the water injection box (3), and the water outlet of the cooling pipe (2) is connected to the water inlet of the drainage box (6).

5. The coil-type battery pack liquid cooling plate according to claim 1, characterized in that: The heating plates (5) are fixedly connected to the inner wall of the water injection box (3), and the heating plates (5) are distributed in an array inside the water injection box (3).

6. The coil-type battery pack liquid cooling plate according to claim 1, characterized in that: Two groups of the reinforcing ribs (10) are provided inside the cooling pipe (2), and the reinforcing ribs (10) and the guide block (11) are an integrated structure.

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