Carbon fiber micro-electric heating system suitable for temperature control of key part of charging pile in high and cold area
By using a carbon fiber microelectric heating system in the charging pile, combined with the design of flexible insulating substrate and reel, the problems of uneven heating and high energy consumption of the core circuit board of the charging pile in the high-altitude area are solved, efficient and uniform temperature control is achieved, and the reliability and charging efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202510425936.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-07-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In high-altitude areas, the core circuit board of the charging pile is heated unevenly at extremely low temperatures, has high energy consumption and cannot effectively maintain an appropriate working temperature, which affects charging efficiency and equipment reliability.
The carbon fiber microelectric heating system is adopted to heat it through a carbon fiber tow that is uniformly laminated or wound on a flexible insulating matrix, and combined with the periodic forward and reverse of the drum, the heat exchange breathing void and the expansion and contraction of the elastic airbag are used to achieve efficient heating and temperature control of the core circuit board.
It realizes efficient heating of the core circuit board of the charging pile, ensures temperature uniformity and reduces energy consumption, and improves the reliability and charging efficiency of the equipment in extremely cold environments.
Smart Images
Figure CN120348177A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of micro-electric heating for charging piles in alpine regions. Background Art
[0002] In alpine regions, the environmental temperature is extremely low. Traditional charging piles may face problems such as reduced charging efficiency, affected battery performance, and possible failures of the equipment itself in low-temperature environments. There are numerous electrical components on the core circuit board inside the charging pile, and there are multiple temperature-sensitive components. For example, the liquid filling inside components such as capacitors will have its electrical performance and values change at extremely low temperatures, thus causing circuit failures. Therefore, targeted temperature protection measures need to be implemented for the core circuit board inside the charging pile. The existing heating materials used in charging piles have certain limitations. The core circuit board cannot efficiently obtain the heat of the heating materials, and there are also problems such as uneven heating, high energy consumption, or inability to effectively maintain a suitable working temperature at extremely low temperatures. Summary of the Invention
[0003] Object of the Invention: In order to overcome the deficiencies in the prior art, the present invention provides a carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions, which can achieve efficient heating of the core circuit board inside the charging pile in extremely cold conditions.
[0004] Technical Solution: To achieve the above object, the carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions of the present invention includes a charging pile electrical cabinet. Inside the charging pile electrical cabinet, there are at least an a partition and a b partition distributed vertically. The space between the a partition and the b partition is the core circuit board bin. A core circuit board is fixedly installed on the inner side of the core circuit board bin. A carbon fiber micro-electric heating device is arranged inside the core circuit board bin. In the front view of the charging pile electrical cabinet, the carbon fiber micro-electric heating device covers the core circuit board.
[0005] Further, the carbon fiber micro-electric heating device includes a flexible insulating matrix in the shape of a hanging cloth body. The flexible insulating matrix is arranged in parallel with a certain spacing from the core circuit board. The surface of the flexible insulating matrix is evenly laminated or wound with carbon fiber tows. It also includes a micro-electric direct current power supply unit capable of energizing the carbon fiber tows evenly laminated or wound on the surface of the flexible insulating matrix.
[0006] Further, the carbon fiber tows evenly laminated or wound on the surface of the flexible insulating matrix are polyacrylonitrile-based carbon fibers.
[0007] Further, the upper end of the hanging cloth body-shaped flexible insulating matrix is fixedly connected along the edge line with a winding drum. Both ends of the winding drum are connected with rotating shafts, and a driving motor drives the winding drum to rotate through the rotating shafts.
[0008] Further, the lower end of the flexible insulating matrix is fixedly connected along the edge line with a counterweight bar.
[0009] Further, the flexible insulating matrix is composed of a horizontal single-layer fabric body at the uppermost part and several horizontal double-layer fabric bodies connected in sequence from top to bottom on the lower side of the horizontal single-layer fabric body; a horizontal straight dividing line is formed between any two adjacent upper and lower connected double-layer fabric bodies.
[0010] Further, each horizontal double-layer fabric body includes an outer layer fabric and an inner layer fabric. The inner layer fabric faces the core circuit board. The upper ends and the lower ends of the outer layer fabric and the inner layer fabric are integrally and hermetically connected along the edges. The specific connection method can be dense sewing or adhesive bonding; both the outer layer fabric and the inner layer fabric are non-breathable, flexible and have a certain elastic fabric body structure, such as flexible silica gel, etc. A heat exchange breathing gap with a spindle-shaped cross-section is formed between the outer layer fabric and the inner layer fabric. The two ends of the heat exchange breathing gap in the horizontal direction are closed, and a number of breathing holes are uniformly and hollowly arrayed on the inner layer fabric;
[0011] A number of vertical spindle-shaped elastic air bags are arrayed at equal intervals in the horizontal direction in each heat exchange breathing gap. The number of vertical spindle-shaped elastic air bags arrayed at equal intervals in the horizontal direction is collectively referred to as the air bag horizontal array. After the pressure in each vertical spindle-shaped elastic air bag increases, it will expand;
[0012] A strip-shaped elastic extrusion air bag is fixedly attached to the side of the horizontal single-layer fabric body facing the core circuit board along the length direction; except for the vertical spindle-shaped elastic air bags in the uppermost row of the air bag horizontal array, the upper end of any vertical spindle-shaped elastic air bag is communicated with the lower end of a vertical spindle-shaped elastic air bag directly above through a flexible connecting pipe; the upper ends of the vertical spindle-shaped elastic air bags in the uppermost row of the air bag horizontal array are all communicated with the strip-shaped elastic extrusion air bag through flexible connecting pipes.
[0013] Further, a working method of a carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions, characterized in that: while energizing the carbon fiber filament bundles uniformly laminated or wound on the surface of the flexible insulating matrix; controlling the reel to rotate forward and backward periodically through a motor; when it is necessary to open the box to maintain the core circuit board of the charging pile electrical cabinet, by controlling the motor, the reel continues to rotate, so that the flexible insulating matrix is completely wound on the reel as a whole.
[0014] Beneficial effects: During the periodic forward and backward rotation of the reel of the present invention, the heat exchange breathing gap becomes larger and smaller continuously like the breathing of the lungs, so that each breathing hole periodically exhales the air inhaled and wrapped and heated in the heat exchange breathing gap from the core circuit board bin and blows it towards the core circuit board. Its breathing process not only improves the heat dissipation efficiency of the horizontal single-layer fabric body, but also enables the core circuit board to continuously receive the hot air exhaled by each breathing hole, improving the heating intensity of the core circuit board. At the same time, its breathing process disturbs the gas in the core circuit board bin, making the air heating uniform, and the heat exchange efficiency of the flowing gas is higher. Description of the Drawings
[0015] Figure 1 It is a schematic diagram of the internal structure of the charging pile electrical cabinet;
[0016] Figure 2 It is a schematic diagram of a carbon fiber micro-electric heating device arranged in the core circuit board bin;
[0017] Figure 3 It is a three-dimensional view of the carbon fiber micro-electric heating device from the back perspective;
[0018] Figure 4 It is a front view of the carbon fiber micro-electric heating device;
[0019] Figure 5 It is a back view of the carbon fiber micro-electric heating device;
[0020] Figure 6 It is a three-dimensional sectional view of the carbon fiber micro-electric heating device;
[0021] Figure 7 It is Figure 6 View D of;
[0022] Figure 8 It is a schematic diagram of the distribution of several vertical spindle-shaped elastic airbags inside the flexible insulating matrix. Detailed implementation mode
[0023] The present invention will be further described below with reference to the accompanying drawings.
[0024] As shown in the attached Figures 1 to 8 The carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions, as Figure 1 , includes a charging pile electrical cabinet 1. The charging pile electrical cabinet 1 at least includes a partition a 5 and a partition b 3 distributed up and down. Between the partition a 5 and the partition b 3 is a core circuit board bin 2. A core circuit board 4 is fixedly installed inside the core circuit board bin 2; As Figure 2 , a carbon fiber micro-electric heating device 41 is arranged in the core circuit board bin 2. The carbon fiber micro-electric heating device 41 covers the core circuit board 4 from the front view perspective of the charging pile electrical cabinet 1.
[0025] As Figures 3 to 8 shown, the carbon fiber micro-electric heating device 41 includes a flexible insulating matrix 6 in the shape of a hanging cloth body. The flexible insulating matrix 6 is arranged in parallel with a spacing from the core circuit board 4 (the spacing is about 5 cm). Carbon fiber filaments are evenly laminated or wound on the surface of the flexible insulating matrix 6. It also includes a micro-electric DC power supply unit that can supply power to the carbon fiber filaments evenly laminated or wound on the surface of the flexible insulating matrix 6.
[0026] The surface of the flexible insulating matrix 6 is evenly laminated or wound with carbon fiber tows. The carbon fiber tows are polyacrylonitrile (PAN)-based carbon fibers. The PAN-based carbon fibers have high strength and good electrical conductivity. Using thinner carbon fiber tows has more advantages in flexibility and uniform heat generation. The carbon fiber is combined with the flexible insulating matrix 6 through composite processes such as lamination and winding, ensuring the continuity of the carbon fiber and the integrity of the conductive path. It can quickly generate heat when powered on, and has a high heat generation efficiency, and can raise the temperature in a short time. The carbon fiber material itself has good flexibility and strength, and deforms synchronously with the flexible insulating matrix 6. When the temperature is lower than the set threshold, the power supply circuit of the carbon fiber micro-electric heating material is automatically started to make it start heating. By adopting the PID control algorithm, the heating power can be accurately controlled, and the energizing current of the carbon fiber micro-electric heating material can be dynamically adjusted according to the temperature deviation to achieve precise temperature control and avoid too high or too low temperature. In order to reduce energy consumption, graphene material is added to the carbon fiber material, which has stronger electrical conductivity and thermal conductivity, and can reduce transmission loss to a certain extent. At the same time, an energy-saving module is added to the temperature control system. When the temperature inside the charging pile is close to the appropriate working temperature, the power supply power of the carbon fiber micro-electric heating material is automatically reduced, and intermittent power supply is used to maintain temperature stability and reduce unnecessary energy consumption.
[0027] The upper end of the flexible insulating matrix 6 in the shape of a hanging cloth body is fixedly connected along the edge line with a winding drum 8. Both ends of the winding drum 8 are connected with a rotating shaft 7. The rotating shaft 7 is rotationally installed on the bearing seats on the lower side of the a partition 5 through bearings. It also includes a driving motor, and the driving motor drives the winding drum 8 to rotate through the rotating shaft 7.
[0028] The lower end of the flexible insulating matrix 6 is fixedly connected along the edge line with a counterweight bar 12. The flexible insulating matrix 6 is composed of a horizontal single-layer cloth body 15 at the uppermost part and several horizontal double-layer cloth bodies 11 connected in sequence from top to bottom below the horizontal single-layer cloth body 15. A horizontal straight dividing line 14 is formed between any two adjacent and vertically connected double-layer cloth bodies 11.
[0029] As Figure 6 and 7As shown, each horizontal double-layer fabric body 11 includes an outer layer fabric 11a and an inner layer fabric 11b. The side of the inner layer fabric 11b facing the core circuit board 4, the upper ends of the outer layer fabric 11a and the inner layer fabric 11b, and the lower ends of the outer layer fabric 11a and the inner layer fabric 11b are integrally and hermetically connected along the edges. The specific connection method can be dense sewing or adhesive bonding. Both the outer layer fabric 11a and the inner layer fabric 11b are non-breathable, flexible and elastic fabric body structures, such as flexible silicone, etc. A heat exchange and breathing gap 17 with a fusiform cross-section is formed between the outer layer fabric 11a and the inner layer fabric 11b. The two ends of the heat exchange and breathing gap 17 in the horizontal direction are closed, and a number of breathing holes 16 are evenly distributed in a hollow array on the inner layer fabric 11b. A number of vertical fusiform elastic air bags 9 are arrayed at equal intervals in the horizontal direction in each heat exchange and breathing gap 17. The number of vertical fusiform elastic air bags 9 arrayed at equal intervals in the horizontal direction is collectively referred to as the air bag horizontal array 30. After the pressure in each vertical fusiform elastic air bag 9 increases, it will expand.
[0030] A strip-shaped elastic extrusion air bag 13 is fixedly attached along the length direction to the side of the horizontal single-layer fabric body 15 facing the core circuit board 4. Except for the vertical fusiform elastic air bags 9 in the top row of the air bag horizontal array 30, the upper end of any vertical fusiform elastic air bag 9 is connected to the lower end of a vertical fusiform elastic air bag 9 directly above through a flexible connecting pipe 10. The upper ends of the vertical fusiform elastic air bags 9 in the top row of the air bag horizontal array 30 are all connected to the strip-shaped elastic extrusion air bag 13 through flexible connecting pipes 10.
[0031] Working principle: When the carbon fiber filaments uniformly laminated or wound on the surface of the flexible insulating matrix 6 are energized, heat is released, so that any part of the flexible insulating matrix 6 is heated as a whole. While heating the air in the core circuit board chamber 2, the heated flexible insulating matrix 6 also transfers heat to the core circuit board chamber 2 by means of thermal radiation. In order to improve the heat dissipation efficiency of the flexible insulating matrix 6 and the heating efficiency of the core circuit board, and to disturb the air in the core circuit board chamber 2; while energizing the carbon fiber filaments uniformly laminated or wound on the surface of the flexible insulating matrix 6; the reel 8 is controlled by a motor to rotate forward and backward periodically.
[0032] When the motor controls the drum 8 to rotate forward, the horizontal single-layer fabric body 15 on the upper part of the flexible insulating matrix 6 is gradually wound around the drum 8, and the side of the horizontal single-layer fabric body 15 with the strip-shaped elastic extrusion airbag 13 closely adheres to the outer wall surface of the drum 8. Under the force conduction of the counterweight strip 12, the outer wall surface of the drum 8 forms a pressing force on the strip-shaped elastic extrusion airbag 13 in the closely wound state. The gas in the compressed strip-shaped elastic extrusion airbag 13 is squeezed into each vertical spindle-shaped elastic airbag 9 through each flexible connecting pipe 10, so that each vertical spindle-shaped elastic airbag 9 expands. The expanded airbag horizontal array 30 jointly expands the corresponding heat exchange breathing gap 17 adaptively. The air in the core circuit board bin 2 is inhaled into the heat exchange breathing gap 17 expanded by the airbag horizontal array 30 through each breathing hole 16. The air in the expanded heat exchange breathing gap 17 is heated under the inner wall heat conduction of the outer layer fabric 11a and the inner layer fabric 11b in the heating state;
[0033] When the motor controls the drum 8 to rotate in reverse, the horizontal single-layer fabric body 15 originally wound around the drum 8 returns to the hanging state; the compressed strip-shaped elastic extrusion airbag 13 returns to the non-compressed state in the initial state, each vertical spindle-shaped elastic airbag 9 shrinks to the initial size, and the expanded heat exchange breathing gap 17 shrinks adaptively to the initial state. The heated air in the heat exchange breathing gap 17 is exhaled from the core circuit board bin 2 through each breathing hole 16, and the heated air is blown towards the core circuit board 4;
[0034] During the process of the drum 8 rotating forward and backward periodically, the heat exchange breathing gap 17 expands and contracts continuously like the lungs breathing, so that each breathing hole 16 periodically exhales the air inhaled and wrapped and heated in the heat exchange breathing gap 17 from the core circuit board bin 2 and blows it towards the core circuit board 4. Its breathing process not only improves the heat dissipation efficiency of the horizontal single-layer fabric body 15, but also enables the core circuit board 4 to continuously receive the hot air exhaled from each breathing hole 16, improving the heating intensity of the core circuit board 4. At the same time, its breathing process disturbs the gas in the core circuit board bin 2, making the air heating uniform, and the heat exchange efficiency of the flowing gas is higher.
[0035] When it is necessary to open the box to maintain the core circuit board 4 of the charging pile electrical cabinet 1, the hanging flexible insulating matrix 6 will block the sight of the maintenance personnel opening the box and interfere with the maintenance personnel. At this time, by controlling the motor, the drum 8 is continuously rotated so that the entire flexible insulating matrix 6 is completely wound around the drum 8, so that the core circuit board 4 is completely exposed in front of the maintenance staff.
[0036] The above is only the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.
Claims
1. A carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions, characterized in that: It includes a charging pile electrical cabinet (1). Inside the charging pile electrical cabinet (1), there are at least a partition board (5) and a b partition board (3) distributed vertically. Between the a partition board (5) and the b partition board (3) is the core circuit board bin (2). Inside the core circuit board bin (2), a core circuit board (4) is fixedly installed. A carbon fiber micro-electric heating device (41) is arranged inside the core circuit board bin (2). When viewed from the front of the charging pile electrical cabinet (1), the carbon fiber micro-electric heating device (41) covers the core circuit board (4).
2. The carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions according to claim 1, characterized in that: The carbon fiber micro-electric heating device (41) includes a flexible insulating matrix (6) in the shape of a hanging cloth body. The flexible insulating matrix (6) is arranged in parallel with a spacing from the core circuit board (4). The surface of the flexible insulating matrix (6) is evenly laminated or wound with carbon fiber tows. It also includes a micro-electric direct current power supply unit that can supply power to the carbon fiber tows evenly laminated or wound on the surface of the flexible insulating matrix (6).
3. The carbon fiber micro-electric heating system for temperature control of key parts of the charging pile applicable to alpine regions according to claim 2, wherein: The carbon fiber tows evenly laminated or wound on the surface of the flexible insulating matrix (6) are polyacrylonitrile (PAN)-based carbon fibers.
4. The carbon fiber micro-electric heating system for temperature control of key parts of a charging pile applicable to alpine regions according to claim 2, characterized in that: At the upper end of the flexible insulating matrix (6) in the shape of a hanging cloth body, a reel (8) is fixedly connected along the edge line. Both ends of the reel (8) are connected with a rotating shaft (7). A driving motor drives the reel (8) to rotate through the rotating shaft (7).
5. The carbon fiber micro-electric heating system for temperature control of key parts of a charging pile applicable to alpine regions according to claim 4, wherein: A counterweight strip (12) is fixedly connected along the edge line at the lower end of the flexible insulating matrix (6).
6. The carbon fiber micro-electric heating system for controlling the temperature of key parts of the charging pile applicable to alpine regions according to claim 5, wherein: The flexible insulating matrix (6) consists of a horizontal single-layer cloth body (15) at the uppermost part and several horizontal double-layer cloth bodies (11) connected in sequence from top to bottom below the horizontal single-layer cloth body (15). A horizontal straight dividing line (14) is formed between any two adjacent and vertically connected double-layer cloth bodies (11).
7. The carbon fiber micro-electric heating system for controlling the temperature of key parts of a charging pile applicable to alpine regions according to claim 6, characterized in that: Each horizontal double-layer cloth body (11) includes an outer layer cloth (11a) and an inner layer cloth (11b). The inner layer cloth (11b) faces the core circuit board (4). The upper ends and the lower ends of the outer layer cloth (11a) and the inner layer cloth (11b) are integrally and hermetically connected along the edge lines. The specific connection method can be dense sewing or adhesive bonding. Both the outer layer cloth (11a) and the inner layer cloth (11b) are non-breathable, flexible and have a certain elastic cloth body structure, such as flexible silica gel, etc. An air exchange and breathing gap (17) with a fusiform cross-section is formed between the outer layer cloth (11a) and the inner layer cloth (11b). The two ends in the horizontal direction of the air exchange and breathing gap (17) are closed, and a number of breathing holes (16) are evenly distributed in a hollow array on the inner layer cloth (11b). A number of vertical fusiform elastic air bags (9) are arrayed at equal intervals in the horizontal direction inside each of the air exchange and breathing gaps (17). The number of vertical fusiform elastic air bags (9) arrayed at equal intervals in the horizontal direction is collectively referred to as an air bag horizontal array (30). Each of the vertical fusiform elastic air bags (9) will expand after the pressure inside increases. On one side of the horizontal single-layer fabric body (15) facing the core circuit board (4), a strip-shaped elastic extrusion airbag (13) is fixedly attached along the length direction; except for the vertical spindle-shaped elastic airbags (9) of the uppermost row of airbag horizontal arrays (30), the upper end of any vertical spindle-shaped elastic airbag (9) is connected to the lower end of a vertical spindle-shaped elastic airbag (9) directly above through a flexible connecting pipe (10); the upper ends of the vertical spindle-shaped elastic airbags (9) of the uppermost row of airbag horizontal arrays (30) are all connected to the strip-shaped elastic extrusion airbag (13) through the flexible connecting pipe (10).
8. The working method of the carbon fiber micro-electric heating system for controlling the temperature of key parts of the charging pile applicable to alpine regions according to claim 7, characterized in that: While energizing the carbon fiber tow evenly laminated or wound on the surface of the flexible insulating matrix (6); the reel (8) is controlled by a motor to rotate forward and backward periodically; when it is necessary to open the box to maintain the core circuit board (4) of the charging pile electrical cabinet (1), by controlling the motor, the reel (8) is continuously rotated so that the flexible insulating matrix (6) is completely wound on the reel (8) as a whole.