Microelectric Heating Temperature Control System and Control Strategy for Charging Piles Applicable to Alpine Regions

Abstract

The present invention discloses a micro-electric heating temperature control system applicable to charging piles in alpine regions, which includes a charging pile electrical cabinet body. Micro-electric heating temperature control louvers are provided on both the left and right sides of the charging pile electrical cabinet body. The micro-electric heating temperature control louvers on both sides of the charging pile electrical cabinet body include three modes: natural ventilation, active heat dissipation, and micro-electric heating internal circulation. Stable temperature control can be achieved specifically under the three working modes.

Description

Technical Field

[0001] The invention belongs to the field of charging piles. Background Art

[0002] The electrical cabinets of charging piles in cold and high-altitude areas exist in the following three forms: non-charging state, low-power slow charging and high-power fast charging; in the non-charging state, the electrical components inside the electrical cabinet of the charging pile release almost no heat. Since the electrical cabinet of the charging pile is in a cold and high-altitude area, the low temperature environment may cause damage to the electronic components and mechanical parts inside the charging pile, such as causing cracking of components on the circuit board and reduced sealing of interfaces; in the low-power charging state (slow charging of about 7KW), the electrical components inside the electrical cabinet of the charging pile will automatically release some heat due to the electrothermal effect, which can effectively resist the external low temperature environment. At this time, if the cabinet is completely closed, there is a risk of overheating; in the high-power charging state (fast charging of about 100KW), the electrical components inside the electrical cabinet of the charging pile will automatically release a large amount of heat due to the electrothermal effect, and there is a risk of overheating. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a micro-electric heating temperature control system and control strategy suitable for charging piles in cold and high-altitude areas, which can achieve targeted and stable temperature control in three working modes.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention is a micro-electric heating temperature control system for charging piles in cold regions, comprising a charging pile electrical cabinet, with micro-electric heating temperature control blinds provided on both sides of the charging pile electrical cabinet; the micro-electric heating temperature control blinds on both sides of the charging pile electrical cabinet include three modes: natural ventilation, active heat dissipation, and micro-electric heating internal circulation;

[0005] In the micro-electric heating internal circulation mode, the micro-electric heating temperature-controlled shutters seal the inside and outside of the charging pile electrical cabinet, and the micro-electric heating units on the micro-electric heating temperature-controlled shutters release heat to the cabinet cavity inside the charging pile electrical cabinet, and the micro-electric heating temperature-controlled shutters drive the air in the cabinet cavity to circulate internally;

[0006] In natural ventilation mode, the air in the cabinet cavity of the charging pile electrical cabinet is freely exchanged with the outside air through two micro-electric heating temperature-controlled shutters;

[0007] In active heat dissipation mode, the micro-electric heating temperature-controlled shutters on the right side of the charging pile electrical cabinet actively blow external air into the cabinet cavity, and the micro-electric heating temperature-controlled shutters on the left side of the charging pile electrical cabinet actively discharge the air in the cabinet cavity to the outside.

[0008] Further, the microelectric heating temperature-controlled shutter includes a window frame, and a plurality of horizontal temperature control units are arranged in the window frame at equal intervals from top to bottom in an array, and both ends of each horizontal temperature control unit are installed on the window frame.

[0009] Further, the horizontal temperature control unit includes a horizontal cylinder shell, and end shafts are fixedly connected to both ends of the horizontal cylinder shell coaxially. The two end shafts are rotatably installed on the window frame through bearings.

[0010] Further, a blade shaft is rotatably arranged coaxially in the horizontal cylinder shell. A blade driving motor is fixedly installed coaxially at one end of the horizontal cylinder shell. The blade driving motor is drivingly connected to one end of the blade shaft, and the other end of the blade shaft is rotationally matched with the end shaft through a bearing; a plurality of strip-shaped wind blades are arranged in a circumferential array outside the blade shaft, and each strip-shaped wind blade extends along the length direction of the blade shaft; a wind blade exposure port is arranged along the length direction on one side of the horizontal cylinder shell.

[0011] Further, in the initial state, a strip-shaped ventilation gap is formed between any two adjacent upper and lower horizontal cylinder shells on the microelectric heating temperature-controlled shutter.

[0012] Further, the horizontal cylinder shell includes a hard cylinder shell with a C-shaped cross-sectional contour, and micro-current electric heating sheets are laid on the inner walls of the hard cylinder shell.

[0013] Further, an elastic soft shell cylinder with a C-shaped cross-section is covered on the outer wall of the hard cylinder shell with a C-shaped cross-sectional contour. The edge of the inner wall surface contour of the elastic soft shell cylinder and the edge of the outer wall surface contour of the hard cylinder shell are adhesively sealed and bonded with an adhesive;

[0014] A crescent-shaped gap layer is formed between the elastic soft shell cylinder and the hard cylinder shell. An air pressure control pump is fixedly installed on the end shaft. The output end of the air pressure control pump communicates with the gap layer between the elastic soft shell cylinder and the hard cylinder shell, so as to control the air pressure in the gap layer. When the air pressure in the gap layer increases, the elastic soft shell cylinder expands outward under the action of the inner pressure;

[0015] When the air pressure in each gap layer increases simultaneously in the state that the wind blade exposure ports of each horizontal cylinder shell all face left or right, the elastic soft shell cylinder expands outward under the action of the inner pressure, gradually narrowing the strip-shaped ventilation gap to be closed. At the same time, the gap layer expands into a crescent-shaped heat preservation bin.

[0016] Further, the control strategy of the microelectric heating temperature control system applicable to a charging pile in an alpine region:

[0017] The temperature control strategy in the non-charging state:

[0018] Taking the micro-electric heating temperature control louver on the right side of the charging pile electrical cabinet as an example, control the air blade exposure openings of each horizontal cylinder shell to face left, and then control the air pressure in the gap layers of each horizontal cylinder shell to increase simultaneously. Under the action of the inner pressure, each elastic soft shell cylinder expands outwards, so that each strip-shaped ventilation gap gradually narrows to a closed state. The upper and lower adjacent expanded elastic soft shell cylinders are tangent to each other, and each gap layer expands into a heat preservation bin with a crescent-shaped cross section. Then, energize the micro-current electric heating sheets coated on the inner walls of each hard cylinder shell. At the same time, control each blade shaft and strip-shaped air blade to rotate counterclockwise along the axis. Control the micro-electric heating temperature control louver on the left side of the charging pile electrical cabinet to perform a mirror action relative to the micro-electric heating temperature control louver on the right side, so as to form a stable internal air circulation flow in the cabinet cavity.

[0019] Temperature control strategy in the low-power charging state: Control the air blade exposure openings of each horizontal cylinder shell to face left, and then control the air pressure in the gap layers of each horizontal cylinder shell to be normal pressure.

[0020] Temperature control strategy in the high-power charging state: Taking the micro-electric heating temperature control louver on the right side of the charging pile electrical cabinet as an example, in a number of horizontal temperature control units evenly distributed at equal intervals from top to bottom, they are divided into several combinations. Each combination includes two adjacent horizontal temperature control units up and down. The two horizontal temperature control units in the combination are respectively recorded as the upper horizontal temperature control unit and the lower horizontal temperature control unit. A horizontal active air duct is formed between the upper horizontal temperature control unit and the lower horizontal temperature control unit. At this time, control the blade shaft and strip-shaped air blade in each upper horizontal temperature control unit to rotate clockwise along the axis, and the blade shaft and strip-shaped air blade in each lower horizontal temperature control unit to rotate counterclockwise along the axis. At the same time, the micro-electric heating temperature control louver on the left side of the charging pile electrical cabinet performs the same action as the micro-electric heating temperature control louver on the right side of the charging pile electrical cabinet.

[0021] Beneficial effects: In the non-charging state, the micro-current electric heating sheets on the inner walls of each hard cylinder shell continuously release heat to the inner cavity of each hard cylinder shell in the energized state, so as to raise the temperature of the inner cavity of each hard cylinder shell 12; in the low-power charging (slow charging at about 7KW) state, it can effectively resist the external low-temperature environment, and the excess heat automatically diffuses to the outside through the strip-shaped ventilation gaps; in the high-power charging (fast charging at about 100KW) state, the hot air in the cabinet cavity continuously discharges to the left through a number of horizontal active air ducts on the micro-electric heating temperature control louver on the left side of the charging pile electrical cabinet, so as to achieve active heat dissipation in the high-power charging state. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the charging pile cabinet;

[0023] Figure 2 It is a schematic diagram of the overall micro-electric heating temperature control louver;

[0024] Figure 3For Figure 2 Schematic diagram of partial enlargement at the 3rd marked position;

[0025] Figure 4 Schematic diagram of the structure of a single horizontal temperature control unit;

[0026] Figure 5 Schematic diagram of the state under the temperature control strategy in the non - charging state;

[0027] Figure 6 Schematic diagram of the state under the temperature control strategy in the low - power charging (slow charging at about 7KW) state;

[0028] Figure 7 Schematic diagram of the state under the temperature control strategy in the high - power charging (fast charging at about 100KW) state. Detailed implementation manner

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] As shown in the attached Figures 1 to 7 The micro - electric heating temperature control system applicable to charging piles in alpine regions, such as Figure 1 、 2 3 includes a charging pile electrical cabinet 2, and micro - electric heating temperature control louvers 1 are arranged on both the left and right sides of the charging pile electrical cabinet 2. The micro - electric heating temperature control louvers 1 on both sides of the charging pile electrical cabinet 2 include three modes: natural ventilation, active heat dissipation, and micro - electric heating internal circulation;

[0031] In the micro - electric heating internal circulation mode, the micro - electric heating temperature control louver 1 seals the inside and outside of the charging pile electrical cabinet 2, and the micro - electric heating unit on the micro - electric heating temperature control louver 1 releases heat into the cabinet cavity 18 inside the charging pile electrical cabinet 2, and the micro - electric heating temperature control louver 1 drives the air inside the cabinet cavity 18 to circulate internally 16;

[0032] In the natural ventilation mode, the air inside the cabinet cavity 18 of the charging pile electrical cabinet 2 freely exchanges with the outside air through the two micro - electric heating temperature control louvers 1;

[0033] In the active heat dissipation mode, the micro - electric heating temperature control louver 1 on the right side of the charging pile electrical cabinet 2 actively blows external air into the cabinet cavity 18, and the micro - electric heating temperature control louver 1 on the left side of the charging pile electrical cabinet 2 actively discharges the air inside the cabinet cavity 18 to the outside.

[0034] The micro - electric heating temperature control louver 1 includes a window frame 5, and a number of horizontal temperature control units 4 are arranged in an equidistant array from top to bottom inside the window frame 5, and both ends of each horizontal temperature control unit 4 are rotatably installed on the window frame 5. As Figure 4, the horizontal temperature control unit 4 includes a horizontal cylinder housing 7. At both ends of the horizontal cylinder housing 7, end shafts 6 are fixedly connected coaxially. The two end shafts 6 are rotatably installed on the window frame 5 through bearings; a ring of transmission teeth 26 is arranged outside the end of the end shaft 6, and a driving device inside the window frame 5 can drive the horizontal cylinder housing 7 to rotate along the axis through the transmission teeth 26.

[0035] A blade shaft 10 is rotatably arranged coaxially inside the horizontal cylinder housing 7. At one end of the horizontal cylinder housing 7, a blade driving motor 9 is fixedly installed coaxially. The blade driving motor 9 is drivingly connected to one end of the blade shaft 10, and the other end of the blade shaft 10 is rotatably matched with the end shaft 6 through a bearing; a plurality of strip-shaped wind blades 8 are arranged in a circumferential array outside the blade shaft 10, and each strip-shaped wind blade 8 extends along the length direction of the blade shaft 10; a wind blade exposure opening 14 is arranged along the length direction on one side of the horizontal cylinder housing 7.

[0036] In the initial state, as Figure 6 shown, a strip-shaped ventilation gap 43 is formed between any two adjacent upper and lower horizontal cylinder housings 7 on the micro-electric heating temperature control shutter 1, and the strip-shaped ventilation gap 43 communicates the cabinet cavity 18 with the external environment.

[0037] The horizontal cylinder housing 7 includes a hard cylinder housing 12 with a C-shaped cross-sectional profile. Micro-current electric heating sheets 13 are laid on the inner walls of the hard cylinder housing 12, and the micro-current electric heating sheets 13 release heat in the energized state.

[0038] The outer wall of the hard cylinder housing 12 with a C-shaped cross-sectional profile is covered with an elastic soft shell cylinder 11 with a C-shaped cross-section. The elastic soft shell cylinder 11 is made of elastic latex or rubber. The edge of the inner wall profile of the elastic soft shell cylinder 11 and the edge of the outer wall profile of the hard cylinder housing 12 are adhesively bonded and sealed with an epoxy resin-based adhesive;

[0039] A crescent-shaped gap layer 22 is formed between the elastic soft shell cylinder 11 and the hard cylinder housing 12. A pneumatic control pump 23 is fixedly installed on the end shaft 6. The output end of the pneumatic control pump 23 communicates with the gap layer 22 between the elastic soft shell cylinder 11 and the hard cylinder housing 12, so as to control the air pressure in the gap layer 22. When the air pressure in the gap layer 22 increases, the elastic soft shell cylinder 11 expands outward under the action of the inner pressure; when the air pressure in each gap layer 22 increases simultaneously when the wind blade exposure openings 14 of each horizontal cylinder housing 7 all face left or right, the elastic soft shell cylinder 11 expands outward under the action of the inner pressure, gradually narrowing the strip-shaped ventilation gap 43 to a closed state. At the same time, the gap layer 22 expands into a crescent-shaped heat preservation bin 22a.

[0040] Control strategy of the micro-electric heating temperature control system applicable to charging piles in alpine regions:

[0041] The charging pile electrical cabinet 2 in alpine regions has the following three states: non-charging state, low-power slow charging, and high-power fast charging;

[0042] In the non - charging state, the electrical components inside the charging pile electrical cabinet 2 hardly release heat. Since the charging pile electrical cabinet 2 is in an alpine region, the low - temperature environment may damage the electronic components and mechanical parts inside the charging pile, such as risks like component cracking on the circuit board and decreased interface sealing performance;

[0043] In the low - power charging (slow charging at about 7KW) state, the electrical components inside the charging pile electrical cabinet 2 will automatically release a part of heat due to the electro - thermal effect, which can effectively counteract the external low - temperature environment. At this time, if there is a risk of overheating in the closed environment;

[0044] In the high - power charging (fast charging at about 100KW) state, the electrical components inside the charging pile electrical cabinet 2 will automatically release a large amount of heat due to the electro - thermal effect. It can not only completely counteract the external low - temperature environment, but also there is a risk of internal overheating, and active heat dissipation is required;

[0045] The temperature control strategy in the non - charging state, such as Figure 5 shown as:

[0046] Taking the micro-electric heating temperature-controlled blinds 1 on the right side of the charging pile electrical cabinet 2 as an example, the wind blade exposure openings 14 of each transverse cylindrical shell 7 are controlled to face left, which is equivalent to facing one side of the cabinet cavity 18. Then, the air pressure in the gap layer 22 of each transverse cylindrical shell 7 is controlled by the air pressure pump 23 to increase at the same time. Under the action of the inner pressure, each elastic soft shell tube 11 expands outward, so that each strip ventilation gap 43 is gradually narrowed to be closed. The upper and lower adjacent expanded elastic soft shell tubes 11 are tangent to each other, thereby blocking the path for external cold air to enter the charging pile electrical cabinet 2. Each gap layer 22 is expanded into a heat-insulating chamber 22a with a crescent-shaped cross-section, thereby achieving sealing and heat preservation of the charging pile cabinet; then the micro-current electric heating plate 13 applied to the inner wall of each hard cylindrical shell 12 is energized, and the micro-current electric heating plate 13 on the inner wall of each hard cylindrical shell 12 continuously releases heat to the inner cavity of each hard cylindrical shell 12 in the energized state, thereby heating the inner cavity of each hard cylindrical shell 12; at the same time, each blade shaft 10 and the strip wind blade 8 are controlled to rotate counterclockwise along the axis, and the heated air in the inner cavity of each hard cylindrical shell 12 is heated in the strip wind blade 8 is repeatedly stirred and diffused into the cabinet cavity 18 through the exposed openings 14 of each wind blade, thereby increasing the temperature in the cabinet cavity 18, avoiding problems such as cracking of electronic components and mechanical parts inside the charging pile, components on the circuit board, and reduced sealing of interfaces; at the same time, the air near the micro-electric heating temperature control shutter 1 on the right side of the charging pile electrical cabinet 2, which is close to the cabinet cavity 18, continues to flow downward under the upward stirring of several strip wind blades 8 at the exposed openings 14 distributed from top to bottom, thereby increasing the temperature of the micro-electric heating temperature control shutter 1 on the right side of the charging pile electrical cabinet 2 The air on the inner wall of the window 1 continuously forms a downward-flowing airflow 51 driven by the strip wind blades 8 at the exposed openings 14 of each wind blade; similarly, the micro-electric heating temperature-controlled shutter 1 on the left side of the charging pile electrical cabinet 2 is controlled to perform a mirror-image action relative to the micro-electric heating temperature-controlled shutter 1 on the right side, so that downward airflow is formed on the two side edges of the cabinet cavity 18 and upward airflow is formed in the center, thereby forming a stable air circulation flow 16 in the cabinet cavity 18, making the temperature of each place in the cabinet cavity 18 uniform and avoiding the phenomenon of excessive local temperature difference.

[0047] Temperature control strategy in low power charging (slow charging around 7KW), such as Figure 6 As shown:

[0048] Taking the micro-electric heating temperature control louver 1 on the right side of the charging pile electrical appliance cabinet 2 as an example, control the air blade exposure ports 14 of each horizontal cylinder shell 7 to face left, which is equivalent to facing the side inside the cabinet cavity 18, and then control the air pressure in the gap layer 22 of each horizontal cylinder shell 7 to be normal pressure; the blade shafts 10 and the strip-shaped air blades 8 do not rotate, and the micro-current electric heating sheet 13 is not powered on; at this time, a strip-shaped ventilation gap 43 is formed between any two adjacent upper and lower horizontal cylinder shells 7 on the micro-electric heating temperature control louver 1, and the strip-shaped ventilation gap 43 connects the cabinet cavity 18 with the external environment; the electrical components inside the charging pile electrical appliance cabinet 2 will automatically release a part of the heat due to the electro-thermal effect, which can effectively resist the external low-temperature environment, and the excess heat is automatically diffused to the outside through the strip-shaped ventilation gap 43.

[0049] The temperature control strategy in the high-power charging (fast charging at about 100KW) state is as Figure 7 shown:

[0050] Taking the micro-electric heating temperature control louver 1 on the right side of the charging pile electrical appliance cabinet 2 as an example, several horizontal temperature control units 4 evenly distributed at equal intervals from top to bottom are divided into several assemblies. Each assembly includes two adjacent upper and lower horizontal temperature control units 4. The two horizontal temperature control units 4 in the assembly are respectively denoted as the upper horizontal temperature control unit 4a and the lower horizontal temperature control unit 4b. A horizontal active air duct 21 is formed between the upper horizontal temperature control unit 4a and the lower horizontal temperature control unit 4b; at this time, control the blade shafts 10 and the strip-shaped air blades 8 in each upper horizontal temperature control unit 4 to rotate clockwise along the axis, and the blade shafts 10 and the strip-shaped air blades 8 in each lower horizontal temperature control unit 4 to rotate counterclockwise along the axis, so as to form a continuous leftward air flow in the horizontal active air duct 21, and then make the cold air from the outside continuously blow into the cabinet cavity 18 through several horizontal active air ducts 21 on the micro-electric heating temperature control louver 1 on the right side of the charging pile electrical appliance cabinet 2; at the same time, the micro-electric heating temperature control louver 1 on the left side of the charging pile electrical appliance cabinet 2 performs the same action as the micro-electric heating temperature control louver 1 on the right side of the charging pile electrical appliance cabinet 2, so that the hot air in the cabinet cavity 18 continuously discharges to the left through several horizontal active air ducts 21 on the micro-electric heating temperature control louver 1 on the left side of the charging pile electrical appliance cabinet 2, so as to realize active heat dissipation in the high-power charging state.

[0051] The above are only the preferred embodiments 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 refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A micro-power heating temperature control system applicable to charging piles in alpine regions, characterized in that: It includes a charging pile electrical cabinet body (2). Micro-electric heating temperature control louvers (1) are provided on both the left and right sides of the charging pile electrical cabinet body (2). The micro-electric heating temperature control louvers (1); the micro-electric heating temperature control louvers (1) on both sides of the charging pile electrical cabinet body (2) include three modes: natural ventilation, active heat dissipation, and micro-electric heating internal circulation. In the micro-electric heating internal circulation mode, the micro-electric heating temperature control louver (1) seals the inside and outside of the charging pile electrical cabinet body (2), and the micro-electric heating unit on the micro-electric heating temperature control louver (1) releases heat into the cabinet cavity (18) inside the charging pile electrical cabinet body (2), and the micro-electric heating temperature control louver (1) drives the air inside the cabinet cavity (18) to circulate internally (16). In the natural ventilation mode, the air inside the cabinet cavity (18) of the charging pile electrical cabinet body (2) freely exchanges with the outside air through the two micro-electric heating temperature control louvers (1). In the active heat dissipation mode, the micro-electric heating temperature control louver (1) on the right side of the charging pile electrical cabinet body (2) actively blows external air into the cabinet cavity (18), and the micro-electric heating temperature control louver (1) on the left side of the charging pile electrical cabinet body (2) actively discharges the air inside the cabinet cavity (18) to the outside. The micro-electric heating temperature control louver (1) includes a window frame (5). A number of horizontal temperature control units (4) are arranged in an equidistant array from top to bottom inside the window frame (5), and both ends of each horizontal temperature control unit (4) are installed on the window frame (5). The horizontal temperature control unit (4) includes a horizontal cylinder shell (7). End shafts (6) are fixedly connected coaxially at both ends of the horizontal cylinder shell (7), and the two end shafts (6) are rotatably installed on the window frame (5) through bearings. A blade shaft (10) is rotatably arranged coaxially inside the horizontal cylinder shell (7). A blade driving motor (9) is fixedly installed coaxially at one end of the horizontal cylinder shell (7), and the blade driving motor (9) is drivingly connected to one end of the blade shaft (10). The other end of the blade shaft (10) is rotatably matched with the end shaft (6) through a bearing; a number of strip-shaped wind blades (8) are arranged in a circumferential array outside the blade shaft (10), and each strip-shaped wind blade (8) extends along the length direction of the blade shaft (10); a wind blade exposure port (14) is arranged along the length direction on one side of the horizontal cylinder shell (7). In the initial state, a strip-shaped ventilation gap (43) is formed between any two adjacent upper and lower horizontal cylinder shells (7) on the micro-electric heating temperature control louver (1); the horizontal cylinder shell (7) includes a hard cylinder shell (12) with a C-shaped cross-sectional profile, and micro-current electric heating sheets (13) are laid on the inner walls of the hard cylinder shell (12); an elastic soft shell cylinder (11) with a C-shaped cross-section is covered on the outer wall of the hard cylinder shell (12) with a C-shaped cross-sectional profile, and the edge of the inner wall surface profile of the elastic soft shell cylinder (11) is adhesively sealed and bonded to the edge of the outer wall surface profile of the hard cylinder shell (12). A crescent-shaped void layer (22) is formed between the elastic soft shell cylinder (11) and the hard cylinder shell (12). A pneumatic control pump (23) is fixedly installed on the end shaft (6). The output end of the pneumatic control pump (23) is communicated with the void layer (22) between the elastic soft shell cylinder (11) and the hard cylinder shell (12) to control the air pressure in the void layer (22). When the air pressure in the void layer (22) increases, the elastic soft shell cylinder (11) expands outward under the action of the inner pressure; When the air vents (14) of the wind blades of each transverse cylinder shell (7) are all facing left or right, and the air pressure in each void layer (22) increases simultaneously, the elastic soft shell cylinder (11) expands outward under the action of the inner pressure, gradually narrowing the strip-shaped ventilation void (43) until it is closed. At the same time, the void layer (22) expands into a crescent-shaped heat preservation bin (22a).

2. The control strategy of the micro-electric heating temperature control system for charging piles applicable to alpine regions according to claim 1, characterized in that: The temperature control strategy in the non-charging state: Taking the micro-electric heating temperature control louver (1) on the right side of the charging pile electrical cabinet (2) as an example, control the air vents (14) of the wind blades of each transverse cylinder shell (7) to all face left, and then control the air pressure in the void layer (22) of each transverse cylinder shell (7) to increase simultaneously. Each elastic soft shell cylinder (11) expands outward under the action of the inner pressure, gradually narrowing each strip-shaped ventilation void (43) until it is closed. The two adjacent expanded elastic soft shell cylinders (11) are tangent to each other. Each void layer (22) expands into a heat preservation bin (22a) with a crescent-shaped cross-section. Then, the micro-current electric heating sheets (13) coated on the inner walls of each hard cylinder shell (12) are electrified; at the same time, control each blade shaft (10) and the strip-shaped wind blade (8) to rotate counterclockwise along the axis; control the micro-electric heating temperature control louver (1) on the left side of the charging pile electrical cabinet (2) to perform a mirror action relative to the micro-electric heating temperature control louver (1) on the right side, so as to form a stable internal air circulation flow (16) in the cabinet cavity (18); The temperature control strategy in the low-power charging state: Control the air vents (14) of the wind blades of each transverse cylinder shell (7) to all face left, and then control the air pressure in the void layer (22) of each transverse cylinder shell (7) to be normal pressure; Temperature control strategy under high-power charging conditions: Taking the micro-electric heating temperature control louver (1) on the right side of the charging pile electrical cabinet (2) as an example, several horizontal temperature control units (4) evenly distributed at equal intervals from top to bottom are divided into several combinations. Each combination includes two horizontally adjacent horizontal temperature control units (4). The two horizontal temperature control units (4) in the combination are respectively denoted as the upper horizontal temperature control unit (4a) and the lower horizontal temperature control unit (4b). A horizontal active air duct (21) is formed between the upper horizontal temperature control unit (4a) and the lower horizontal temperature control unit (4b). At this time, control the blade shafts (10) and strip-shaped air blades (8) in each upper horizontal temperature control unit (4a) to rotate clockwise along the axis, and the blade shafts (10) and strip-shaped air blades (8) in each lower horizontal temperature control unit (4b) to rotate counterclockwise along the axis. At the same time, the micro-electric heating temperature control louver (1) on the left side of the charging pile electrical cabinet (2) performs the same actions as the micro-electric heating temperature control louver (1) on the right side of the charging pile electrical cabinet (2).

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