Micro-electric heating temperature control system and control strategy suitable for charging pile in alpine region

Abstract

The micro-electric heating temperature control system comprises a charging pile electric appliance cabinet body, and micro-electric heating temperature control shutters are arranged on the left side and the right side of the charging pile electric appliance cabinet body; the micro-electric heating temperature control shutters on the two sides of the charging pile electric appliance cabinet body have three modes of natural ventilation, active heat dissipation and micro-electric heating internal circulation. And stable temperature control can be pertinently realized in 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 regions 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 region, the low temperature environment may cause damage to the electronic components and mechanical parts inside the charging pile, such as causing the components on the circuit board to crack and the interface to be sealed. Risks; 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 part of the 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 stable temperature control in three working modes.

[0004] Technical solution: To achieve the above purpose, the micro-electric heating temperature control system of the charging pile in the high-cold area of ​​the present invention includes a charging pile electrical cabinet, and micro-electric heating temperature control blinds are arranged on the left and right 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 unit on the micro-electric heating temperature-controlled shutters releases heat to the cabinet cavity in 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 the 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] Furthermore, the micro-electric heating temperature-controlled blinds include a window frame, in which a plurality of transverse temperature-controlled units are arranged in an equidistant array from top to bottom, and both ends of each transverse temperature-controlled unit are mounted on the window frame.

[0009] Furthermore, the transverse temperature control unit comprises a transverse cylinder shell, and end shafts are coaxially fixedly connected at both ends of the transverse cylinder shell, and the end shafts are rotatably mounted on the window frame through bearings.

[0010] Furthermore, a blade shaft is coaxially rotatable inside the transverse cylinder shell, a blade drive motor is coaxially fixedly installed at one end of the transverse cylinder shell, the blade drive motor drives one end of the blade shaft, and the other end of the blade shaft rotates with the end shaft through a bearing; a plurality of strip wind blades are arranged in a circular array outside the blade shaft, and each strip wind blade extends along the length direction of the blade shaft; a wind blade exposure opening is arranged on one side of the transverse cylinder shell along the length direction.

[0011] Furthermore, in the initial state, strip-shaped ventilation gaps are formed between any two adjacent upper and lower adjacent transverse cylinder shells on the micro-electric heating temperature-controlled blinds.

[0012] Furthermore, the transverse cylindrical shell includes a hard cylindrical shell with a C-shaped cross-sectional profile, and the inner wall of the hard cylindrical shell is coated with a micro-current electric heating sheet.

[0013] Furthermore, the outer wall of the hard cylinder shell with a C-shaped cross-sectional profile is covered with an elastic soft shell cylinder with a C-shaped cross-sectional profile, and the contour edge of the inner wall of the elastic soft shell cylinder and the contour edge of the outer wall of the hard cylinder shell are sealed and glued by a bonding agent;

[0014] A gap layer with a crescent-shaped cross section is formed between the elastic soft shell tube and the hard shell. An air pressure control pump is fixedly installed on the end shaft. The output end of the air pressure control pump is connected to the gap layer between the elastic soft shell tube and the hard 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 tube expands outwards under the action of the inner pressure.

[0015] When the exposed openings of the wind blades of each transverse cylinder shell are facing left or right, and the air pressure in each gap layer increases at the same time, the elastic soft shell cylinder expands outward under the action of the inner pressure, causing the strip ventilation gap to gradually narrow to closed. At the same time, the gap layer expands to form a crescent-shaped insulation chamber.

[0016] Furthermore, the control strategy of the micro-electric heating temperature control system for charging piles in cold and high-altitude areas is as follows:

[0017] Temperature control strategy in non-charging state:

[0018] Taking the micro-electric heating temperature-controlled louver on the right side of the charging pile electrical cabinet as an example, the exposed openings of the wind blades of each horizontal cylinder shell are controlled to face left, and then the air pressure in the gap layer of each horizontal cylinder shell is controlled to increase at the same time, and each elastic soft shell cylinder expands outward under the action of the inner pressure, so that each strip ventilation gap is gradually narrowed to closed, and the upper and lower adjacent expanded elastic soft shell cylinders are tangent to each other, and each gap layer is expanded into a crescent-shaped insulation chamber, and then the micro-current electric heating sheet applied to the inner wall of each hard cylinder shell is energized; at the same time, each blade shaft and strip wind blade are controlled to rotate counterclockwise along the axis; the micro-electric heating temperature-controlled louver on the left side of the charging pile electrical cabinet is controlled to make a mirror image relative to the micro-electric heating temperature-controlled louver on the right side, so that a stable air circulation flow is formed in the cabinet cavity.

[0019] The temperature control strategy in the low-power charging state is as follows: the exposed openings of the wind blades of each transverse cylinder shell are controlled to face left, and then the air pressure in the gap layer of each transverse cylinder shell is controlled to be normal pressure.

[0020] Temperature control strategy under high-power charging state: Taking the micro-electric heating temperature control shutter on the right side of the charging pile electrical cabinet as an example, a number of horizontal temperature control units equidistantly distributed from top to bottom are divided into a number of combinations, each of which includes two upper and lower adjacent horizontal temperature control units, and the two horizontal temperature control units in the combination are respectively recorded as an upper horizontal temperature control unit and a lower horizontal temperature control unit, and a horizontal active air duct is formed between the upper horizontal temperature control unit and the lower horizontal temperature control unit; at this time, the blade shaft and the strip wind blades in each upper horizontal temperature control unit are controlled to rotate clockwise along the axis, and the blade shaft and the strip wind blades in each lower horizontal temperature control unit are controlled to rotate counterclockwise along the axis; at the same time, the micro-electric heating temperature control shutter on the left side of the charging pile electrical cabinet and the micro-electric heating temperature control shutter on the right side of the charging pile electrical cabinet perform the same action.

[0021] Beneficial effects: In the non-charging state, the micro-current electric heating plate on the inner wall of each hard cylindrical shell of the present invention continuously releases heat to the inner cavity of each hard cylindrical shell when powered on, thereby heating the inner cavity of each hard cylindrical shell 12; in the low-power charging state (slow charging of about 7KW), it can effectively resist the external low temperature environment, and the excess heat automatically diffuses to the outside through the strip ventilation gaps; in the high-power charging state (block charging of about 100KW), the hot air in the cabinet cavity is continuously discharged to the left through several horizontal active air ducts on the micro-electric heating temperature control shutters on the left side of the charging pile electrical cabinet, thereby realizing active heat dissipation in the high-power charging state. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 This is the overall schematic diagram of the micro-electric heating temperature-controlled blinds;

[0024] Figure 3for Figure 2 A partial enlarged schematic diagram of the three marked locations;

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

[0026] Figure 5 It is a state diagram of the temperature control strategy in the non-charging state;

[0027] Figure 6 This is a schematic diagram of the temperature control strategy under low-power charging (slow charging around 7KW);

[0028] Figure 7 This is a schematic diagram of the temperature control strategy under high-power charging (block charging around 100KW). DETAILED DESCRIPTION

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

[0030] As attached Figures 1 to 7 The micro-electric heating temperature control system suitable for charging piles in cold and high-altitude areas is shown in Figure 1 , 2 3 includes a charging pile electrical cabinet 2, and micro-electric heating temperature control shutters 1 are arranged on both sides of the charging pile electrical cabinet 2; the micro-electric heating temperature control shutters 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-controlled shutter 1 seals the charging pile electrical cabinet 2 inside and outside, and the micro-electric heating unit on the micro-electric heating temperature-controlled shutter 1 releases heat to the cabinet cavity 18 in the charging pile electrical cabinet 2, and the micro-electric heating temperature-controlled shutter 1 drives the air in the cabinet cavity 18 to circulate internally 16;

[0032] In the natural ventilation mode, the air in the cabinet cavity 18 in the charging pile electrical cabinet 2 is freely exchanged with the outside air through the two micro-electric heating temperature-controlled shutters 1;

[0033] In the active heat dissipation mode, the micro-electric heating temperature-controlled shutter 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-controlled shutter 1 on the left side of the charging pile electrical cabinet 2 actively discharges the air in the cabinet cavity 18 to the outside.

[0034] The micro-electric heating temperature-controlled blinds 1 include a window frame 5, in which a plurality of transverse temperature-controlled units 4 are arranged in an array equidistant from top to bottom, and both ends of each transverse temperature-controlled unit 4 are rotatably mounted on the window frame 5. Figure 4The transverse temperature control unit 4 includes a transverse cylinder shell 7, and the two ends of the transverse cylinder shell 7 are coaxially fixedly connected with end shafts 6, and the two end shafts 6 are rotatably mounted on the window frame 5 through bearings; a circle of transmission gear bodies 26 are arranged outside the end of the end shaft 6, and the driving device in the window frame 5 can drive the transverse cylinder shell 7 to rotate along the axis through the transmission gear body 26.

[0035] A blade shaft 10 is coaxially rotatable in the transverse cylinder shell 7, and a blade drive motor 9 is coaxially fixedly installed at one end of the transverse cylinder shell 7. The blade drive motor 9 drives 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 wind blades 8 are arranged in a circular array outside the blade shaft 10, and each strip wind blade 8 extends along the length direction of the blade shaft 10; a wind blade exposure port 14 is provided on one side of the transverse cylinder shell 7 along the length direction.

[0036] In the initial state, if Figure 6 As shown, strip-shaped ventilation gaps 43 are formed between any two adjacent upper and lower adjacent transverse cylinder shells 7 on the micro-electric heating temperature-controlled shutter 1, and the strip-shaped ventilation gaps 43 connect the cabinet cavity 18 with the external environment.

[0037] The transverse cylindrical shell 7 includes a hard cylindrical shell 12 with a C-shaped cross-sectional profile. The inner wall of the hard cylindrical shell 12 is coated with a micro-current electric heating sheet 13, which releases heat when powered.

[0038] The outer wall of the hard cylindrical shell 12 with a C-shaped cross-sectional profile is covered with an elastic soft shell 11 with a C-shaped cross-sectional profile. The elastic soft shell 11 is made of elastic latex or rubber. The inner wall contour edge of the elastic soft shell 11 and the outer wall contour edge of the hard cylindrical shell 12 are sealed and glued with an epoxy resin adhesive.

[0039] A gap layer 22 with a crescent-shaped cross-section is formed between the elastic soft shell tube 11 and the hard shell 12, and an air pressure control pump 23 is fixedly installed on the end shaft 6. The output end of the air pressure control pump 23 is connected to the gap layer 22 between the elastic soft shell tube 11 and the hard shell 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 tube 11 expands outward under the action of the inner pressure; when the wind blade exposure ports 14 of each lateral cylinder shell 7 are all facing left or right, when the air pressure in each gap layer 22 increases at the same time, the elastic soft shell tube 11 expands outward under the action of the inner pressure, so that the strip ventilation gap 43 is gradually narrowed to closed, and at the same time, the gap layer 22 expands to form a crescent-shaped insulation chamber 22a.

[0040] Control strategy of micro-electric heating temperature control system for charging piles in cold areas:

[0041] The charging pile electrical cabinet 2 in the high-cold area 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 release almost no heat. Since the charging pile electrical cabinet 2 is located in a high-cold area, the low temperature environment may cause damage to the electronic components and mechanical parts inside the charging pile, such as cracking of components on the circuit board and reduced sealing of the interface.

[0043] In the low-power charging state (slow charging at about 7KW), the electrical components inside the charging pile electrical cabinet 2 will automatically release some heat due to the electrothermal effect, which can effectively resist the external low temperature environment. At this time, if the closed environment has the risk of overheating;

[0044] Under high-power charging (fast charging of about 100KW), the electrical components inside the charging pile electrical cabinet 2 will automatically release a large amount of heat due to the electrothermal effect, which not only completely resists the external low temperature environment, but also has the risk of internal overheating, requiring active heat dissipation;

[0045] Temperature control strategy in non-charging state, such as Figure 5 As shown:

[0046] Taking the micro-electric heating temperature-controlled shutter 1 on the right side of the charging pile electrical cabinet 2 as an example, the wind blade exposure opening 14 of each horizontal cylinder shell 7 is controlled to face left, which is equivalent to facing one side of the cabinet cavity 18, and then the air pressure in the gap layer 22 of each horizontal cylinder shell 7 is controlled by the air pressure pump 23 to increase at the same time, and each elastic soft shell tube 11 expands outward under the action of the inner pressure, so that each strip ventilation gap 43 is gradually narrowed to be closed, and 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 crescent-shaped insulation chamber 22a, thereby achieving sealing and insulation 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 the electronic components and mechanical parts inside the charging pile, the components on the circuit board cracking, the interface sealing reduction and other problems; 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 close to the cabinet cavity 18 continues to flow downward under the upward stirring of a number of strip wind blades 8 at the exposed openings 14 of the wind blades 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 action relative to the micro-electric heating temperature-controlled shutter 1 on the right side, so that downward airflows are formed on the two side edges of the cabinet cavity 18, and upward airflows are formed in the center, thereby forming a stable air circulation flow 16 in the cabinet cavity 18, so that the temperature of each place in the cabinet cavity 18 is uniform, 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-controlled shutter 1 on the right side of the charging pile electrical cabinet 2 as an example, the wind blade exposure opening 14 of each horizontal cylinder shell 7 is controlled to face left, which is equivalent to facing one side of the cabinet cavity 18, and then the air pressure in the gap layer 22 of each horizontal cylinder shell 7 is controlled to be normal pressure; each blade shaft 10 and the strip wind blade 8 do not rotate, and the micro-current electric heating plate 13 is not energized; at this time, strip ventilation gaps 43 are formed between any two adjacent upper and lower adjacent horizontal cylinder shells 7 on the micro-electric heating temperature-controlled shutter 1, and the strip ventilation gaps 43 connect the cabinet cavity 18 with the external environment; the electrical components inside the charging pile electrical cabinet 2 will automatically release part of the heat due to the electrothermal effect, which can effectively resist the external low temperature environment, and the excess heat will automatically diffuse to the outside through the strip ventilation gaps 43.

[0049] Temperature control strategy in high power charging (about 100KW block charging), such as Figure 7 As shown:

[0050] Taking the micro-electric heating temperature-controlled blinds 1 on the right side of the charging pile electrical cabinet 2 as an example, a number of transverse temperature control units 4 equidistantly distributed from top to bottom are divided into a number of assemblies, each of which includes two transverse temperature control units 4 adjacent to each other, and the two transverse temperature control units 4 in the assembly are respectively recorded as an upper transverse temperature control unit 4a and a lower transverse temperature control unit 4b, and a transverse active air duct 21 is formed between the upper transverse temperature control unit 4a and the lower transverse temperature control unit 4b; at this time, the blade shaft 10 and the strip wind blade 8 in each upper transverse temperature control unit 4a are controlled to rotate clockwise along the axis, and the blade shaft 10 and the strip wind blade 8 in each lower transverse temperature control unit 4b are controlled to rotate counterclockwise along the axis. The needle rotates, so that a continuous leftward wind flow is formed in the transverse active air duct 21, and then the cold air from the outside is continuously blown into the cabinet cavity 18 through the several transverse active air ducts 21 on the micro-electric heating temperature control shutters 1 on the right side of the charging pile electrical cabinet 2; at the same time, the micro-electric heating temperature control shutters 1 on the left side of the charging pile electrical cabinet 2 and the micro-electric heating temperature control shutters 1 on the right side of the charging pile electrical cabinet 2 perform the same action, so that the hot air in the cabinet cavity 18 is continuously discharged to the left through the several transverse active air ducts 21 on the micro-electric heating temperature control shutters 1 on the left side of the charging pile electrical cabinet 2, thereby realizing active heat dissipation under high-power charging state.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The micro-electric heating temperature control system is suitable for charging piles in cold areas, and its characteristics are: It comprises a charging pile electrical cabinet (2), wherein both left and right sides of the charging pile electrical cabinet (2) are provided with micro-electric heating temperature-controlled blinds (1), and the micro-electric heating temperature-controlled blinds (1); the micro-electric heating temperature-controlled blinds (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; In the micro-electric heating internal circulation mode, the micro-electric heating temperature control shutter (1) seals the charging pile electrical cabinet (2) inside and outside, and the micro-electric heating unit on the micro-electric heating temperature control shutter (1) releases heat to the cabinet cavity (18) in the charging pile electrical cabinet (2), and the micro-electric heating temperature control shutter (1) drives the air in the cabinet cavity (18) to circulate internally (16); In the natural ventilation mode, the air in the cabinet cavity (18) in the charging pile electrical cabinet (2) is freely exchanged with the outside air through the two micro-electric heating temperature-controlled shutters (1); In the active heat dissipation mode, the micro-electric heating temperature-controlled 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-controlled louver (1) on the left side of the charging pile electrical cabinet (2) actively discharges the air in the cabinet cavity (18) to the outside.

2. The micro-electric heating temperature control system for charging piles in cold regions according to claim 1 is characterized in that: The micro-electric heating temperature-controlled blinds (1) comprise a window frame (5), wherein a plurality of transverse temperature-controlled units (4) are arranged in an array equidistant from top to bottom in the window frame (5), and both ends of each of the transverse temperature-controlled units (4) are mounted on the window frame (5).

3. The micro-electric heating temperature control system for charging piles in cold regions according to claim 2 is characterized in that: The transverse temperature control unit (4) comprises a transverse cylinder shell (7), the two ends of which are coaxially fixedly connected with end shafts (6), and the two end shafts (6) are rotatably mounted on the window frame (5) via bearings.

4. The micro-electric heating temperature control system for charging piles in cold regions according to claim 3 is characterized by: A blade shaft (10) is coaxially rotatably arranged inside the transverse cylindrical shell (7); a blade driving motor (9) is coaxially fixedly installed at one end of the transverse cylindrical shell (7); the blade driving motor (9) drives one end of the blade shaft (10); the other end of the blade shaft (10) is rotatably matched with the end shaft (6) via a bearing; a plurality of strip-shaped wind blades (8) are arranged in a circular array outside the blade shaft (10); each of the strip-shaped wind blades (8) extends along the length direction of the blade shaft (10); and a wind blade exposure opening (14) is arranged on one side of the transverse cylindrical shell (7) along the length direction.

5. The micro-electric heating temperature control system for charging piles in cold regions according to claim 4 is characterized in that: In the initial state, strip-shaped ventilation gaps (43) are formed between any two adjacent upper and lower adjacent transverse cylindrical shells (7) on the micro-electric heating temperature-controlled blinds (1).

6. The micro-electric heating temperature control system for charging piles in cold regions according to claim 5 is characterized by: The transverse cylindrical shell (7) comprises a hard cylindrical shell (12) with a C-shaped cross-sectional profile, and the inner wall of the hard cylindrical shell (12) is provided with a micro-current electric heating sheet (13).

7. The micro-electric heating temperature control system for charging piles in cold regions according to claim 6 is characterized by: The outer wall of the hard cylindrical shell (12) with a C-shaped cross-sectional profile is covered with an elastic soft shell cylinder (11) with a C-shaped cross-sectional profile, and the inner wall profile edge of the elastic soft shell cylinder (11) and the outer wall profile edge of the hard cylindrical shell (12) are sealed and glued by using an adhesive; A gap layer (22) with a crescent-shaped cross section is formed between the elastic soft shell tube (11) and the hard shell (12); an air pressure control pump (23) is fixedly mounted on the end shaft (6); an output end of the air pressure control pump (23) is connected to the gap layer (22) between the elastic soft shell tube (11) and the hard shell (12), thereby controlling the air pressure in the gap layer (22); when the air pressure in the gap layer (22) increases, the elastic soft shell tube (11) expands outwards under the action of the inner pressure; When the wind blade exposure openings (14) of each transverse cylinder shell (7) are facing left or right, and the air pressure in each gap layer (22) increases simultaneously, the elastic soft shell cylinder (11) expands outwards under the action of the inner pressure, so that the strip-shaped ventilation gap (43) is gradually narrowed to be closed, and at the same time, the gap layer (22) expands to form a crescent-shaped heat preservation chamber (22a).

8. The control strategy of the micro-electric heating temperature control system for charging piles in cold regions according to claim 7 is characterized in that: Temperature control strategy in non-charging state: 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 cylinder shell (7) are controlled to face leftward, and then the air pressure in the gap layer (22) of each transverse cylinder shell (7) is controlled to increase simultaneously, and each elastic soft shell cylinder (11) expands outward under the action of the inner pressure, so that each strip ventilation gap (43) is gradually narrowed to be closed, and the upper and lower adjacent expanded elastic soft shell cylinders (11) are tangent to each other, and each gap layer (22) is ) are all expanded into a crescent-shaped heat preservation chamber (22a) and then the micro-current electric heating sheet (13) uniformly applied to the inner wall of each hard cylindrical shell (12) is energized; at the same time, each blade shaft (10) and the strip wind blade (8) are controlled to rotate counterclockwise along the axis; the micro-electric heating temperature control blind (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 control blind (1) on the right side, so that a stable air circulation flow (16) is formed in the cabinet cavity (18); The temperature control strategy in the low-power charging state is: controlling the wind blade exposure opening (14) of each transverse cylinder shell (7) to face left, and then controlling the air pressure in the gap layer (22) of each transverse cylinder shell (7) to be normal pressure; Temperature control strategy in high-power charging state: Taking the micro-electric heating temperature control shutter (1) on the right side of the charging pile electrical cabinet (2) as an example, a plurality of transverse temperature control units (4) equidistantly distributed from top to bottom are divided into a plurality of assemblies, each of which includes two transverse temperature control units (4) adjacent to each other in the upper and lower directions, and the two transverse temperature control units (4) in the assembly are respectively recorded as an upper transverse temperature control unit (4a) and a lower transverse temperature control unit (4b). (4b); at this time, the blade shaft (10) and the strip wind blade (8) in each upper transverse temperature control unit (4a) are controlled to rotate clockwise along the axis, and the blade shaft (10) and the strip wind blade (8) in each lower transverse temperature control unit (4b) are controlled to rotate counterclockwise along the axis; at the same time, the micro-electric heating temperature control blind (1) on the left side of the charging pile electrical cabinet (2) and the micro-electric heating temperature control blind (1) on the right side of the charging pile electrical cabinet (2) perform the same action.

Images