A new energy charging pile with liquid cooling system
By utilizing the principle of circulating flow of paramagnetic magnetic fluid under the action of magnetic field and temperature gradient, liquid-cooled heat dissipation without mechanical pumps is achieved, and the problems of energy consumption and noise in the existing charging pile heat dissipation structure are solved, and efficient and low-noise heat dissipation effect is achieved.
Patent Information
- Application Number
- CN202510105407.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-04-04
AI Technical Summary
In the existing charging piles, the liquid-cooled heat dissipation method driven by mechanical pumps has problems of energy consumption and noise, which is difficult to meet the needs of efficient heat dissipation.
The circulating flow principle of paramagnetic magnetic fluid under the action of magnetic field and temperature gradient is adopted to achieve liquid-cooled heat dissipation without mechanical pumps. By filling the paramagnetic magnetic fluid in the heat dissipation box, thermal column, fixed cylinder and heat dissipation pipe, the circulating flow is driven by the temperature gradient and magnetic field force, and the heat generated by the charging pile is taken away.
It can efficiently distribute the heat generated by the charging pile without a mechanical pump, and has the characteristics of simple structure, small size, no mechanical moving parts, no energy consumption, no noise and simple maintenance.
Smart Images
Figure CN119749303A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of liquid cooling technology, and in particular to a new energy charging pile with a liquid cooling system. Background Art
[0002] With the development of economy, energy and environmental protection issues are becoming increasingly prominent. Countries around the world have turned their attention to environmentally friendly and energy-saving electric vehicles, and electric vehicles are developing rapidly. As an energy supply station for new energy electric vehicles, the demand for the use of heat dissipation structures of electric vehicle charging piles continues to rise. In order to improve charging efficiency, it is necessary to increase the power of the power module in the heat dissipation structure of the charging pile. While increasing the power of the power module, it also leads to the heating of various components on the PCB circuit assembly in the power module, such as MOS tubes and inductors. In order to ensure the continuous and safe use of the heat dissipation structure of the charging pile, it is necessary to provide an efficient heat dissipation structure for the power module.
[0003] Conventional charging pile heat dissipation methods include liquid cooling. Liquid cooling generally requires the use of a mechanical pump to drive the circulation of the fluid to dissipate the heat of the charging pile through heat exchange. However, the mechanical pump not only needs to be powered on and consumes energy, but also generates certain noise. Summary of the invention
[0004] The present invention provides a new energy charging pile with a liquid cooling system to solve the problems raised in the above background technology.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A new energy charging pile with a liquid cooling system comprises a charging pile shell, wherein a plurality of vertically equidistant heat sinks are fixedly connected to the inside of the charging pile shell, a power module is arranged on the upper side of each heat sink, and the power module comprises an integrated circuit board and a heating component arranged on the integrated circuit board, a plurality of heat-conducting columns are fixedly connected to the inner top side wall of each heat sink, and the length of the plurality of heat-conducting columns gradually increases from left to right, a second connecting pipe is fixedly connected to the two side walls of each heat sink, a plurality of the second connecting pipes are arranged in two rows and respectively penetrate the two side walls of the charging pile shell, one end of each row of the plurality of the second connecting pipes is fixedly connected to the first connecting pipe, the upper ends of the two first connecting pipes are fixedly connected to the third connecting pipe, and a plurality of heat dissipation pipes are fixedly connected between the two third connecting pipes, the heat dissipation box, the second connecting pipe, the first connecting pipe, the third connecting pipe, and the heat dissipation pipe are all filled with paramagnetic magnetic fluid, and the bottom side of each heat dissipation box is connected to a magnetic plate through a calorific value dynamic moving device.
[0006] Preferably, each of the calorific value dynamic moving devices includes two fixed cylinders, both of which are fixedly connected to the bottom side walls of the heat sink, the upper end of each fixed cylinder extends into the interior of the heat sink, and both ends of each fixed cylinder are closed. A piston plate is slidably connected to each fixed cylinder, and a chamber below the piston plate in the fixed cylinder is filled with alcohol with obvious volume expansion and contraction due to heat and cold. A sliding rod is fixedly connected to the bottom side wall of each piston plate, and each sliding rod penetrates the bottom side wall of the fixed cylinder. The bottom end of each sliding rod is fixedly connected to the upper side of a magnetic plate, which is located directly below the heat sink, and each sliding rod is provided with a spring, and the two ends of each spring are respectively fixedly connected to the magnetic plate and the side wall of the heat sink.
[0007] Preferably, an insulating heat-conducting plate is fixedly connected to the upper side of the heat dissipation box, and the integrated circuit board is fixedly connected to the upper side of the insulating heat-conducting plate.
[0008] Preferably, the insulating heat-conducting plate is made of alumina.
[0009] Preferably, the paramagnetic magnetic fluid consists of paramagnetic particles, a base fluid and a surfactant.
[0010] Preferably, the paramagnetic particles are nano iron oxide particles, and the paramagnetic particles are used to impart magnetic properties to the fluid.
[0011] Preferably, the base liquid is any one of kerosene and silicone oil, and the base liquid is used to maintain the liquid fluidity of the paramagnetic magnetic fluid.
[0012] Preferably, the surfactant includes any one of oleic acid and linoleic acid, and the surfactant is used to prevent the paramagnetic particles from agglomerating and ensure the stability of the fluid.
[0013] Preferably, the heat dissipation box, heat-conducting column, fixing tube and heat dissipation pipe are all made of copper with high thermal conductivity.
[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes the principle of continuous circulating flow of paramagnetic magnetic fluid under the action of magnetic field and temperature gradient, so as to remove the heat generated by the charging pile and dissipate it to the external environment without the need for a mechanical pump. It has the characteristics of simple structure, small size, no mechanical moving parts, no energy consumption, no noise and simple maintenance.
[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of a new energy charging pile with a liquid cooling system proposed by the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of a new energy charging pile with a liquid cooling system proposed by the present invention; Figure 3 It is a schematic diagram of the surface structure of the heat dissipation box in the present invention; Figure 4 It is a schematic diagram of the internal axial cross-sectional structure of the heat dissipation box in the present invention; Figure 5 It is a schematic diagram of the structure of multiple heat-conducting columns in the present invention; Figure 6 It is a front view cross-sectional structural schematic diagram of the heat dissipation box in the present invention; Figure 7 for Figure 6 Schematic diagram of the locally enlarged structure of A in the middle.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Charging pile shell; 2. First connecting pipe; 3. Second connecting pipe; 4. Heat sink; 5. Third connecting pipe; 6. Heat dissipation pipe; 7. Magnetic plate; 8. Insulating heat conductive plate; 9. Integrated circuit board; 10. Heating components; 11. Spring; 12. Paramagnetic magnetic fluid; 13. Heat conductive column; 14. Fixed cylinder; 15. Sliding rod; 16. Piston plate; 17. Alcohol. DETAILED DESCRIPTION
[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail by way of example with reference to the accompanying drawings in the following paragraphs. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.
[0019] See also Figure 1 to Figure 7 In an embodiment of the present invention, a new energy charging pile with a liquid cooling system includes a charging pile shell 1, a plurality of vertically equidistant heat sinks 4 are fixedly connected to the charging pile shell 1, a power module is provided on the upper side of each heat sink 4, the power module includes an integrated circuit board 9, and a heating component 10 arranged on the integrated circuit board 9, the heating component 10 includes a MOS tube, an inductor, and a transformer and other components, an insulating heat conducting plate 8 is fixedly connected to the upper side of the heat sink 4, the integrated circuit board 9 is fixedly connected to the upper side of the insulating heat conducting plate 8, and the insulating heat conducting plate 8 is made of alumina; A plurality of heat-conducting columns 13 are fixedly connected to the inner top side wall of each heat-dissipating box 4, and the length of the plurality of heat-conducting columns 13 gradually increases from left to right. A second connecting tube 3 is fixedly connected to the two side walls of each heat-dissipating box 4, and the plurality of second connecting tubes 3 are arranged in two rows and respectively penetrate the two side walls of the charging pile housing 1, and one end of each row of the plurality of second connecting tubes 3 is fixedly connected to the first connecting tube 2, and the upper ends of the two first connecting tubes 2 are fixedly connected to the third connecting tube 5, and a plurality of spirally arranged heat-dissipating tubes 6 are fixedly connected between the two third connecting tubes 5. The heat-dissipating box 4, the second connecting tube 3, the first connecting tube 2, the third connecting tube 5, and the heat-dissipating tube 6 are all filled with paramagnetic magnetic fluid 12. The heat-dissipating box 4, the heat-conducting columns 13, the fixed cylinder 14 and the heat-dissipating tube 6 are all made of copper with high thermal conductivity, and the bottom side of each heat-dissipating box 4 is connected to a magnetic plate 7 through a calorific value dynamic moving device.
[0020] See also Figure 6 and Figure 7 Each calorific value dynamic moving device includes two fixed cylinders 14, both of which are fixedly connected to the bottom side wall of the heat dissipation box 4, the upper end of each fixed cylinder 14 extends into the inside of the heat dissipation box 4, and both ends of each fixed cylinder 14 are closed. A piston plate 16 is slidably connected in each fixed cylinder 14, and the chamber below the piston plate 16 in the fixed cylinder 14 is filled with alcohol 17 with obvious volume expansion and contraction due to heat and cold. A sliding rod 15 is fixedly connected to the bottom side wall of each piston plate 16, and each sliding rod 15 passes through the bottom side wall of the fixed cylinder 14. The bottom end of the sliding rod 15 is fixedly connected to the upper side of the magnetic plate 7, and the magnetic plate 7 is located directly below the heat sink 4. A spring 11 is sleeved on each sliding rod 15, and the two ends of each spring 11 are respectively fixedly connected to the magnetic plate 7 and the side wall of the heat sink 4. When the temperature of the paramagnetic magnetic fluid 12 in the heat sink 4 is higher, the alcohol 17 in the fixed cylinder 14 will expand due to the heat, and push the piston plate 16 to rise. The rising of the piston plate 16 can drive the magnetic plate 7 to rise close to the heat sink 4 through the sliding rod 15, thereby increasing the magnetic field force on the paramagnetic magnetic fluid 12 in the heat sink 4.
[0021] It should be noted that the paramagnetic magnetic fluid 12 is composed of paramagnetic particles, a base liquid and a surfactant. The paramagnetic particles are nano iron oxide particles. The paramagnetic particles are used to give the fluid magnetism. The magnetization intensity of the paramagnetic particles is proportional to the magnetic field intensity. When there is no external magnetic field, the magnetic moment inside the paramagnetic material is randomly distributed, so it does not show magnetism on a macro scale. However, when it is subjected to an external magnetic field, the magnetic moment will be arranged along the direction of the magnetic field, thereby showing magnetism; the base liquid is any one of kerosene and silicone oil, and the base liquid is used to maintain the liquid fluidity of the paramagnetic magnetic fluid 12; the surfactant includes any one of oleic acid and linoleic acid, and the surfactant is used to prevent the paramagnetic particles from agglomerating and ensure the stability of the fluid; The working principle of the present invention is: The paramagnetic magnetic fluid 12 in the heat sink 4 can generate magnetism due to the magnetic field force of the magnetic plate 7. Since the magnetic susceptibility of the paramagnetic magnetic fluid 12 decreases with increasing temperature, when the heating components 10 on the integrated circuit board 9 generate heat, the heat will enter the heat sink 4 through the insulating heat conducting plate 8. The magnetism of the paramagnetic magnetic fluid 12 in the heat sink 4 decreases after being heated. Moreover, since the length of the heat conducting column 13 in the heat sink 4 gradually increases from left to right, the heat conducting column 13 can not only produce flow resistance to the paramagnetic magnetic fluid 12, but also the longer the heat conducting column 13 is, the more obvious the heating effect of the paramagnetic magnetic fluid 12 in the heat sink 4 is, so that the temperature of the paramagnetic magnetic fluid 12 in the heat sink 4 gradually increases from left to right in a step-by-step manner, and then the magnetism of the paramagnetic magnetic fluid 12 in the heat sink 4 gradually decreases from left to right. At this time, the magnetic field force of the magnetic plate 7 on the right end of the paramagnetic magnetic fluid 12 in the heat sink 4 is relatively weak, thereby forming an imbalance of the magnetic field forces at both ends of the paramagnetic magnetic fluid 12 in the heat sink 4 and driving the flow of the paramagnetic magnetic fluid 12. Then, as shown in FIG. Figure 2 In the closed pipeline formed by the second connecting tube 3, the first connecting tube 2, the third connecting tube 5, and the heat dissipation tube 6, the paramagnetic magnetic fluid 12 will circulate, and the flowing paramagnetic magnetic fluid 12 will continuously take away the heat on the integrated circuit board 9 through the heat dissipation box 4, and then dissipate the heat to the outside when passing through the heat dissipation tube 6. Since the paramagnetic magnetic fluid 12 has a high thermal conductivity and fluidity, it can more effectively take away the heat and dissipate it to the external environment; When the temperature of the paramagnetic magnetic fluid 12 in the heat sink 4 is higher, the alcohol 17 in the fixed cylinder 14 will expand due to the heat, and push the piston plate 16 to rise. The rising piston plate 16 can drive the magnetic plate 7 to approach the heat sink 4 through the sliding rod 15. The closer the magnetic plate 7 is to the heat sink 4, the greater the magnetic field force on the paramagnetic magnetic fluid 12 in the heat sink 4, and then the flow rate of the paramagnetic magnetic fluid 12 increases, which can improve the heat dissipation efficiency of the paramagnetic magnetic fluid 12. When the temperature of the paramagnetic magnetic fluid 12 in the heat sink 4 is not high, the magnetic plate 7 is away from the bottom side of the heat sink 4 under the action of the spring 11, so that the paramagnetic magnetic fluid 12 in the heat sink 4 is subjected to a lower magnetic field force, and the flow rate of the paramagnetic magnetic fluid 12 is reduced, thereby avoiding erosion and wear of the pipes in the liquid cooling system caused by excessive flow rate, thereby extending the service life of the pipes.
[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.
Claims
1. A new energy charging pile with a liquid cooling system, comprising a charging pile housing (1), characterized in that: A plurality of vertically equidistant heat sinks (4) are fixedly connected inside the charging pile housing (1), a power module is provided on the upper side of each heat sink (4), the power module comprises an integrated circuit board (9) and a heating element (10) arranged on the integrated circuit board (9), a plurality of heat-conducting columns (13) are fixedly connected to the inner top side wall of each heat sink (4), the plurality of heat-conducting columns (13) gradually increasing in length from left to right, and a second connecting pipe (3) is fixedly connected to both side walls of each heat sink (4), the plurality of second connecting pipes (3) are arranged in two rows and respectively penetrate Passing through the two side walls of the charging pile housing (1), one end of each row of the plurality of second connecting tubes (3) is fixedly connected to the first connecting tube (2), the upper ends of the two first connecting tubes (2) are fixedly connected to the third connecting tube (5), and a plurality of heat dissipation tubes (6) are fixedly connected between the two third connecting tubes (5); the heat dissipation box (4), the second connecting tube (3), the first connecting tube (2), the third connecting tube (5), and the heat dissipation tube (6) are all filled with paramagnetic magnetic fluid (12), and the bottom side of each heat dissipation box (4) is connected to a magnetic plate (7) via a calorific value dynamic moving device.
2. A new energy charging pile with a liquid cooling system according to claim 1, characterized in that: Each of the calorific value dynamic moving devices comprises two fixed cylinders (14), the two fixed cylinders (14) are fixedly connected to the bottom side wall of the heat dissipation box (4), the upper end of each of the fixed cylinders (14) extends into the interior of the heat dissipation box (4), the two ends of each of the fixed cylinders (14) are closed, a piston plate (16) is slidably connected inside each of the fixed cylinders (14), and a chamber located below the piston plate (16) in the fixed cylinder (14) is filled with alcohol (16) with obvious volume expansion and contraction due to heat and cold. 17), a sliding rod (15) is fixedly connected to the bottom side wall of each piston plate (16), each sliding rod (15) passes through the bottom side wall of the fixed cylinder (14), the bottom end of each sliding rod (15) is fixedly connected to the upper side of the magnetic plate (7), the magnetic plate (7) is located directly below the heat sink (4), and each sliding rod (15) is sleeved with a spring (11), and the two ends of each spring (11) are respectively fixedly connected to the magnetic plate (7) and the side wall of the heat sink (4).
3. A new energy charging pile with a liquid cooling system according to claim 2, characterized in that: An insulating heat-conducting plate (8) is fixedly connected to the upper side of the heat dissipation box (4), and the integrated circuit board (9) is fixedly connected to the upper side of the insulating heat-conducting plate (8).
4. A new energy charging pile with a liquid cooling system according to claim 3, characterized in that: The insulating heat conducting plate (8) is made of alumina.
5. The new energy charging pile with a liquid cooling system according to claim 4, characterized in that: The paramagnetic magnetic fluid (12) comprises paramagnetic particles, a base fluid and a surfactant.
6. A new energy charging pile with a liquid cooling system according to claim 5, characterized in that: The paramagnetic particles are nano iron oxide particles, and the paramagnetic particles are used to impart magnetism to the fluid.
7. A new energy charging pile with a liquid cooling system according to claim 6, characterized in that: The base liquid is any one of kerosene and silicone oil, and the base liquid is used to maintain the liquid fluidity of the paramagnetic magnetic fluid (12).
8. The new energy charging pile with a liquid cooling system according to claim 7, characterized in that: The surfactant includes any one of oleic acid and linoleic acid, and the surfactant is used to prevent the paramagnetic particles from agglomerating and ensure the stability of the fluid.
9. The new energy charging pile with a liquid cooling system according to claim 8, characterized in that: The heat dissipation box (4), the heat-conducting column (13), the fixing cylinder (14) and the heat dissipation pipe (6) are all made of copper material with high thermal conductivity.