An advertising screen charging station for electric bicycles and a multi-socket charging management method

Abstract

This invention discloses an advertising screen charging station for electric bicycles and a multi-socket charging management method, relating to the technical field of electric vehicle charging equipment. The advertising screen charging station includes at least one first charging socket located on the front panel of the housing, at least one second charging socket located on the lower cover of the housing, and at least one air outlet assembly located on the back panel of the housing. A heat insulation plate protrudes from the front panel towards the back panel. The heat insulation plate includes: a first heat insulation plate located in the middle of the housing and distributed on both sides in the width direction, with the space between the two first heat insulation plates forming a main air duct; and a second heat insulation plate located on both sides of the main air duct, separating the first charging socket from the second charging socket, forming a first air duct and a second air duct. This invention constructs dedicated air ducts corresponding to each heat source by setting up heat insulation plates, and simultaneously intervenes physically in the thermal contamination of each device, changing the chaotic airflow state inside traditional charging stations.

Description

Technical Field

[0001] This invention relates to the field of charging equipment technology for electric bicycles, and in particular to an advertising screen charging station for electric bicycles and a multi-socket charging management method. Background Technology

[0002] With the increasing popularity of electric bicycles, the demand for outdoor multi-socket charging stations is growing. These charging stations typically integrate multiple charging sockets to meet the needs of simultaneous charging and are often equipped with advertising screens for commercial or information dissemination functions. However, these charging stations face severe thermal management challenges in actual operation, directly affecting their safety and reliability.

[0003] Traditional charging piles have a simple internal layout and a crude heat dissipation design. Heat generated by multiple charging sockets and high-power components (such as relays and PCB power modules) accumulates in a single, empty cavity, relying mainly on a top-mounted cooling fan for overall ventilation. This results in chaotic airflow within the cavity, easy mixing of hot and cold air, and low heat dissipation efficiency. When a charging socket experiences abnormally high temperatures due to factors such as using a substandard charger or improperly connecting multiple vehicles to a power strip, the heat rapidly spreads throughout the cavity, creating "thermal pollution." This not only raises the overall temperature inside the charging pile, accelerating the aging of all electronic components, but may also trigger a system-wide power outage if a local temperature sensor detects the overall temperature rise. In other words, a malfunction or violation of one socket can cause all normally functioning sockets to be unusable, resulting in a poor user experience and significant operational losses.

[0004] Existing charging stations lack dynamic heat dissipation control capabilities. Their cooling systems (usually fans with fixed speeds) can only be operated by simply turning them on or off, or adjusting their speed based on a general temperature monitoring point. They cannot distinguish the specific source of heat, let alone provide targeted and enhanced cooling for abnormal heat sources. When the aforementioned localized heat pollution sources appear, the system cannot accurately guide the cooling airflow to the location that needs heat dissipation the most, nor can it physically isolate the heat source. It can only allow the heat pollution to spread, remaining in a passive response state. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an advertising screen charging station for electric bicycles and a multi-socket charging management method. This method can physically suppress thermal interference between different charging sockets, identify local thermal anomalies, and dynamically allocate heat dissipation resources, thereby achieving precise, efficient, and safe thermal management and ensuring the long-term stable operation of multi-socket charging stations in complex usage scenarios.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An electric bicycle advertising screen charging station includes at least one first charging socket located on the front panel of the housing, at least one second charging socket located on the lower cover of the housing, and at least one air outlet assembly located on the rear panel of the housing. The front panel has a heat insulation plate protruding towards the rear panel, and the heat insulation plate includes:

[0008] The first heat insulation plate is located in the middle of the shell and is distributed on both sides in the width direction. The space between the first heat insulation plates on both sides forms the main air duct.

[0009] The second heat insulation plate is located on both sides of the main air duct and separates the first charging socket from the second charging socket, forming a first air duct that flows through the first charging socket and a second air duct that flows through the second charging socket.

[0010] There is a gap between the raised top surfaces of the first and second heat insulation plates and the back panel, which forms a vertical air duct. The air outlet group is provided with an air outlet and a cooling fan. The lower cover is provided with air inlets corresponding to the main air duct, the first air duct and the second air duct. Under the negative pressure provided by the cooling fan and / or under the natural upward force of the hot airflow, the airflow entering through the air inlet flows through the main air duct, the first air duct and the second air duct respectively and then enters the vertical air duct, and flows towards the air outlet in the vertical air duct.

[0011] As a further improvement of the present invention: the air inlet includes a first air inlet located in the first air duct and a second air inlet located in the second air duct. A swingable guide plate is provided between the first air inlet and the second air inlet. The swing axis of the swingable guide plate is provided on the second heat insulation plate. The swing axis is connected to a micro motor provided on the front panel through a transmission belt, so that the swingable guide plate guides the airflow of the first air inlet or the second air inlet to the first air duct or the second air duct under the drive of the micro motor.

[0012] As a further improvement of the present invention: the raised top surface of the second heat insulation plate extends beyond the second charging socket in the raised direction, thereby separating the first charging socket and the second charging socket.

[0013] As a further improvement of the present invention: the back panel is inclined upward and has a first connecting plate, the protruding end of the first connecting plate extends vertically upward and has a second connecting plate, the air outlet space between the back panel and the second connecting plate is open on both sides and connected to the vertical air duct, the air outlet space is provided in the middle of the air outlet space and the third connecting plate divides the air outlet space into a left air outlet space and a right air outlet space, the air outlet group includes a left air outlet group and a right air outlet group, the left air outlet group and the right air outlet group are respectively provided in the left air outlet space and the right air outlet space.

[0014] As a further improvement of the present invention: a PCB board assembly is provided on the second connecting plate, and a relay assembly is provided in the middle of the back panel and located below the first connecting plate. The PCB board assembly and the relay assembly are located in the main air duct.

[0015] As a further improvement of the present invention: the top of the second connecting plate is provided with notches corresponding to the left air outlet space and the right air outlet space respectively, so that part of the airflow of the main air duct enters from the air inlet of the main air duct and flows through the relay group and the PCB board group before entering the air outlet space through the notches.

[0016] As a further improvement of the present invention: the air inlet includes a main air inlet located on the lower cover and a hollow channel located on a column fixedly connected to the bottom of the housing. The hollow channel is used for cable installation, and the lower part of the column is provided with a vent hole that extends radially through the hollow channel.

[0017] On the other hand, the present invention also provides a multi-socket charging management method, which utilizes an electric bicycle advertising screen charging station as described above to perform the following steps, including:

[0018] The temperature within the first and second air ducts, separated by the same second heat insulation panel, is monitored in real time, and the following calculations are performed:

[0019] a) Absolute temperature rise of the first air duct ΔT1 = |Temperature of the rear end point T1 - Temperature of the front end point T1' per unit time|; Absolute temperature rise of the second air duct ΔT2 = |Temperature of the rear end point T2 - Temperature of the front end point T2' per unit time|.

[0020] b) The transverse temperature difference between the first and second air ducts is ΔTc = |T1 - T2|;

[0021] c) The temperature imbalance between the first and second air ducts is η = |ΔT1 - ΔT2| / (ΔT1 + ΔT2 + ε), where ε is a constant to prevent division by zero;

[0022] When η exceeds the first threshold and ΔTc continues to increase, it is determined that inter-duct thermal contamination diffusion has occurred inside the shell where the second insulation plate is located. The duct with the higher temperature is marked as the heat source duct, and the other duct is the affected duct. Level 1 intervention is initiated.

[0023] The swingable guide plate of the second heat insulation plate is controlled to deflect to the side corresponding to the invaded air duct, so that the air inlet of the invaded air duct is guided to the heat source air duct through the swingable guide plate, increasing the flow of cold air through the heat source air duct, enhancing its direct cooling capacity to the heat source and its heat carrying capacity. At the same time, the advertising screen provides an interactive prompt: Local overheating has been detected, and the system has automatically optimized heat dissipation.

[0024] As a further improvement of the present invention, the charging management method further includes the following steps:

[0025] After implementing the primary intervention, an assessment of the monitoring time window Δt was initiated. The imbalance η(t) and lateral temperature difference ΔTc(t) were recorded every t seconds. The linear regression slopes of η(t) and ΔTc(t) within the monitoring time window Δt were calculated, denoted as Slope_η and Slope_ΔTc, respectively. The percentage decrease in η(t) and ΔTc(t) at the end of the monitoring time window Δt compared to their initial values ​​was calculated, denoted as Drop_η% and Drop_ΔTc%, respectively.

[0026] Determine the initiation criteria for secondary intervention. Secondary intervention should be initiated if the following conditions are met simultaneously:

[0027] e) Slope_η≥-0.001 and Slope_ΔTc≥-0.001, if satisfied, the trend is basically flat or still deteriorating;

[0028] f) If Drop_η% < 10% or Drop_ΔTc% < 10%, the improvement is not significant;

[0029] Initiate Level 2 intervention:

[0030] The swingable guide vane is controlled to swing to its mechanical limit angle so that the heat source air duct can obtain the maximum air intake.

[0031] Increase the operating power of the cooling fan in the air outlet group on the side where the heat source air duct is located to 80%-100% of the rated power;

[0032] The power limit of the charging socket corresponding to the heat source air duct is set to 65% of the rated value. If the absolute temperature of the heat source air duct continues to rise after the preset limit time, the power limit of the charging socket corresponding to the heat source air duct will be further reduced to 40% of the rated value.

[0033] During secondary intervention, if the absolute temperature of the heat source duct rises by more than 20°C within 120 seconds and reaches the safety threshold, then final intervention is initiated:

[0034] Disconnect the power supply to the charging socket corresponding to the heat source air duct, reset the swingable air guide plate to the neutral position, and keep the corresponding side cooling fan running at 70% of its rated power for at least 300 seconds for protective cooling. The advertising screen will then display that the charging socket is in a faulty state.

[0035] As a further improvement of the present invention, the charging management method further includes the following steps:

[0036] Obtain the temperature T in the left zone of the main air duct. L and right zone temperature T RT L and T R Temperature data is obtained from the left and right zone temperature monitoring points located upstream of the air intake paths corresponding to the left and right air outlet spaces, respectively.

[0037] Real-time calculation of the left and right temperature difference ΔT in the main air duct LR =|T L -T R |, when ΔT is satisfied LR >ΔT th When, ΔT th Based on a pre-set temperature difference threshold, a significant lateral shift in the heat load of the main air duct is determined:

[0038] If T L >T R If the heat load on the left side is higher, the power setting of the cooling fan in the left exhaust group is increased, while the power setting of the cooling fan in the right exhaust group is kept constant.

[0039] If T L <T R If the heat load on the right side is higher, the power setting of the cooling fan in the right exhaust group is increased, while the power setting of the cooling fan in the left exhaust group is maintained.

[0040] When ΔT LR ≤ΔT th At that time, the cooling fans of the left and right air outlet groups are controlled to operate at the same reference power.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] This invention constructs dedicated air ducts corresponding to each heat source by setting up heat insulation plates. It divides the charging pile shell into physically isolated main air ducts, first air ducts, and second air ducts. At the same time, the heat insulation plates physically intervene in the thermal pollution of each component. The air inlets of each air duct are set through the lower cover to guide the incoming airflow to the corresponding charging socket, which can increase heat dissipation efficiency. The airflow is directed to dissipate heat, avoiding disorderly airflow. This changes the chaotic state of airflow inside the traditional charging pile. It creates irreplaceable prerequisites for subsequent realization of zoned temperature monitoring, identification of local heat sources, and implementation of precise directional heat dissipation. It allows thermal pollution to be observed and dealt with within specific air ducts, rather than spreading throughout the entire shell.

[0043] This invention addresses the challenge of heat pollution diffusion between air ducts through the structure of advertising screen charging stations, providing a sensitive and reliable way to distinguish between normal, uniform heat generation and dangerous, single-point heat diffusion. Its primary intervention, deflection of the airflow guide plate, is a non-destructive and precise physical adjustment designed to correct heat flow distribution without interrupting charging, significantly improving the user experience. The secondary intervention, by introducing dynamic evaluation indicators such as monitoring time windows, linear regression slopes, and percentage changes, avoids overreacting to instantaneous fluctuations. Only when the primary intervention proves ineffective, escalation measures are implemented, coupling power limiting with fan speed increase to maximize heat dissipation suppression while minimizing user disruption. Attached Figure Description

[0044] To more clearly illustrate the technical solution, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of the advertising screen charging pile in an embodiment;

[0046] Figure 2 An exploded structural diagram of the advertising screen charging pile as an example;

[0047] Figure 3 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0048] Figure 4 This is a schematic diagram of the front panel structure of an embodiment;

[0049] Figure 5 This is a structural schematic diagram of the front panel, lower cover, and upper cover, as well as the assembly components between them, in an embodiment.

[0050] Figure 6 A schematic diagram of the back panel and lower cover and the assembly components therebetween, as shown in the embodiment;

[0051] Figure 7 This is a structural schematic diagram of the front panel, back panel, and the assembly components between them in an embodiment;

[0052] Figure 8 This is a schematic diagram of the structure on the back of the housing in an embodiment.

[0053] In the diagram: 100: shell, 110: front panel, 120: bottom cover, 130: back panel, 131: first connecting plate, 132: second connecting plate, 133: third connecting plate, 134: notch;

[0054] 210: First charging socket; 220: Second charging socket;

[0055] 300: Exhaust fan assembly; 310: Exhaust vent; 320: Cooling fan;

[0056] 410: First heat insulation plate; 420: Second heat insulation plate; 421: Swingable guide plate; 422: Miniature motor;

[0057] 510: First air duct; 520: Second air duct; 530: Main air duct; 540: Vertical air duct.

[0058] 600: Air inlet; 610: First air inlet; 620: Second air inlet;

[0059] 700: Relay group, 800: PCB board group, 900: Column, 910: Vent hole. Detailed Implementation

[0060] In order to clearly and completely understand the technical solution, the present invention will be further described in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] An embodiment of the present invention provides a charging station with an advertising screen for electric bicycles, such as... Figures 1-8 As shown, the housing 100 includes at least one first charging socket 210 on the front panel 110 and at least one second charging socket 220 on the lower cover 120, as well as at least one air outlet assembly 300 on the back panel 130. The front panel 110 has a heat insulation plate protruding towards the back panel 130. This heat insulation plate is either integrally injection molded with the front panel 110 or is a separate heat insulation material plate fixed to the inner wall of the front panel 110. The heat insulation plate includes:

[0062] The first heat insulation plate 410 is located in the middle of the shell 100 and is distributed on both sides in the width direction. The space between the first heat insulation plates 410 on both sides forms the main air duct 530.

[0063] The second heat insulation plate 420 is located on both sides of the main air duct and separates the first charging socket 210 and the second charging socket 220, forming a first air duct 510 flowing through the first charging socket 210 and a second air duct 520 flowing through the second charging socket 220.

[0064] There is a gap between the raised top surface of the first heat insulation plate 410 and the second heat insulation plate 420 and the back panel 130. This gap forms a vertical air duct 540. The air outlet group 300 is provided with an air outlet 310 and a cooling fan 320. The lower cover 120 is provided with an air inlet 600 corresponding to the main air duct 530, the first air duct 510 and the second air duct 520 respectively. Under the negative pressure provided by the cooling fan 320 and / or under the natural upward force of the hot airflow, the airflow entering through the air inlet 600 flows through the main air duct 530, the first air duct 510 and the second air duct 520 respectively and enters the vertical air duct 540, and flows towards the air outlet 310 in the vertical air duct 540.

[0065] In this embodiment, when the advertising screen charging pile starts working, the relay group 700, PCB board group 800, first charging socket 210 or second charging socket 220 inside the housing 100 generate heat. The heat begins to diffuse inside the housing 100 to form a hot airflow. Under the natural upward force of the hot airflow, external cold air flows in from the air inlets 600 opened for each air duct in the lower cover 120 under the pressure difference. Specifically, the air flowing into the main air duct 530 cools the first charging socket 210, relay group 700 and PCB board group 800 located in the middle of the front panel 110; the air flowing into the first air duct 510 and the second air duct 520 cools the corresponding first charging socket 210 and second charging socket 220 respectively. The heated air rises and merges into the vertical air duct 540, and is finally discharged through the air outlet 310. During this process, when multiple charging sockets are in use or the ambient temperature is high, the temperature inside the casing rises and reaches the set temperature threshold, triggering the air outlet group to start. The cooling fan is activated to create negative pressure at the air outlet, and the external cold air increases the air intake of each air duct under the pressure difference.

[0066] The traditional challenge in thermal management of multi-socket charging piles lies in the dispersion of heat generation points and the disorder of airflow organization. To address this, this invention constructs dedicated air ducts corresponding to each heat source by setting up heat insulation plates. The charging pile casing is divided into physically isolated main air ducts, first air ducts, and second air ducts. At the same time, the heat insulation plates physically intervene in the thermal contamination of each component. The air inlets of each air duct are set through the bottom cover to guide the incoming airflow to the corresponding charging socket, which can increase heat dissipation efficiency. The airflow is directed to dissipate heat, avoiding disorderly airflow. This changes the chaotic state of airflow inside the traditional charging pile, creating an irreplaceable prerequisite for subsequent implementation of zoned temperature monitoring, identification of local heat sources, and precise directional heat dissipation. This allows thermal contamination to be observed and dealt with within specific air ducts, rather than spreading throughout the entire casing.

[0067] Furthermore, the advantage of this invention lies not only in achieving physical separation through the heat insulation plate, but also in constructing a heat dissipation topology that enables precise initial airflow guidance and efficient subsequent airflow convergence, resolving the inherent contradiction of partitioning as flow obstruction in traditional air duct designs. Traditionally, partitions added to separate air ducts often become sources of airflow resistance. In this embodiment, the front (front panel), sides (heat insulation plate), and bottom (lower cover) are closed, while the top and rear are open, creating a semi-open air duct design. After entering from the lower cover, the airflow path is not restricted to a narrow, tortuous pipe. Instead, after entering the housing and directly impacting heat sources such as the charging socket, the airflow has two unobstructed outflow paths that conform to the natural upward trend of hot air: one is horizontally backward directly into the vertical air duct, and the other is vertically upward directly to the exhaust space. The vertical air duct in this embodiment ensures that even when multiple air ducts are operating simultaneously, the overall airflow resistance is minimized, allowing the cooling fan to operate more efficiently.

[0068] The core function of the heat insulation panel lies in the initial stage of airflow circulation. After entering through the air inlet, the cold air is forcibly guided to ensure that each stream of cold air first flows through a designated heating element, namely the charging socket. This means that each major heat source is equipped with a dedicated cooling channel, achieving precise and forced cooling. Heat is carried away by its dedicated airflow the moment it is generated, greatly reducing the time that heat accumulates on the heating element itself and lowering the peak temperature of the hot spot from the source.

[0069] The vertical airflow duct is a shared vertical confluence channel extending from the bottom to the top. It utilizes the chimney effect, where hot air, being less dense, naturally rises. The air, initially heated in each duct, converges into this vertical channel, and its upward trend, combined with the forced draft provided by the top cooling fan, creates a combined force. This not only reduces fan energy consumption but also provides passive natural cooling when the fan is not running or operating at low speed, enhancing reliability.

[0070] In an optional embodiment, refer to Figure 5 , Figure 6 and Figure 8 The air inlet 600 includes a first air inlet 610 located in the first air duct 510 and a second air inlet 620 located in the second air duct 520. A swingable guide plate 421 is provided between the first air inlet 610 and the second air inlet 620. The swing axis of the swingable guide plate 421 is provided on the second heat insulation plate 420. The swing axis is connected to a micro motor 422 provided on the front panel 110 via a transmission belt, so that the swingable guide plate 421 guides the airflow of the first air inlet 610 or the second air inlet 620 to the first air duct 510 or the second air duct 520 under the drive of the micro motor 422.

[0071] In this embodiment, the forward and reverse rotation of the micro motor is converted into the rotation of the swingable guide plate around the swing axis via a transmission belt. Those skilled in the art will understand that the micro motor is existing technology. The transmission belt connects the micro motor and the swing axis. In confined spaces and high-temperature environments, the transmission belt can also be replaced by a linkage mechanism or gear set, both of which are conventional transmission methods. This embodiment preferably uses a transmission belt, which can be made of high-temperature resistant materials, providing a low-cost method that meets the swing requirements. The initial position of the swingable guide plate is preferably set at a neutral position between the first and second air inlets. By controlling the swing of the swingable guide plate, the airflow from the air inlets can be changed and guided to concentrate on one of the air ducts. For example, if the swingable guide plate is controlled to deflect to one side of the first air duct, the airflow entering the first air inlet will be guided by the swingable guide plate into the second air duct. That is, the second air duct simultaneously receives airflow from both the first and second air inlets, and vice versa.

[0072] This embodiment uses a swingable guide plate to actively adjust the distribution of cooling airflow between the first and second air ducts. This allows the system to no longer treat the two air ducts equally, but to allocate more cooling air to the areas that need it according to their respective heat load conditions. This achieves a qualitative change in heat dissipation resources from traditional fixed allocation to on-demand allocation, solving the problem of thermal contamination between air ducts.

[0073] In an optional embodiment, refer to Figure 7 The raised top surface of the second heat insulation plate 420 extends beyond the second charging socket 220 in the protrusion direction, thus separating the first charging socket 210 and the second charging socket 220. In this embodiment, the second heat insulation plate extending beyond the second charging socket means that in the thickness direction of the housing (from the front panel to the back panel), the area H between the plane containing the highest point of the second heat insulation plate 420 (parallel to the front panel) and the front panel 110 covers the projection W of the second charging socket 220 in that thickness direction. That is, the isolation barrier (second heat insulation plate) is higher than the isolated heat source (second charging socket) in the thickness direction (relative to the front panel), ensuring the isolation effect. If the height of the heat insulation plate is insufficient, the heat spots generated by the first or second charging socket at the edge position away from the front panel are prone to wander randomly between the first and second air ducts along the raised top surface of the second heat insulation plate.

[0074] This embodiment ensures that the first charging socket and the second charging socket are separated in the thickness direction and even in three-dimensional space, maximizing the thermal resistance between them. This not only blocks direct heat radiation, but more importantly, it structurally prevents the hot air generated by the lower second charging socket from rising directly through natural convection and bypassing the raised top surface of the second heat insulation plate to heat the upper first charging socket. In this embodiment, the hot air generated by the second charging socket directly enters the vertical air duct when flowing towards the raised top surface of the second heat insulation plate, reducing the impact on the first charging socket.

[0075] In an optional embodiment, such as Figure 6 and Figure 7 As shown, the back panel 130 is inclined upward and has a first connecting plate 131. The protruding end of the first connecting plate 131 extends vertically upward and has a second connecting plate 132. The air outlet space between the back panel 130 and the second connecting plate 132 is open on both sides and connected to the vertical air duct 540. The middle of the air outlet space is provided with a third connecting plate 133, and the third connecting plate 133 divides the air outlet space into a left air outlet space and a right air outlet space. The air outlet group 300 includes a left air outlet group and a right air outlet group, which are respectively located in the left air outlet space and the right air outlet space.

[0076] In an optional embodiment, such as Figures 5-7 As shown, the second connecting plate 132 is provided with a PCB board group 800, and the back panel 130 is provided with a relay group 700 in the middle and located below the first connecting plate 131. The PCB board group 800 and the relay group 700 are located in the main air duct 530.

[0077] In an optional embodiment, such as Figures 5-7 As shown, the top of the second connecting plate 132 is provided with notches 134 corresponding to the left air outlet space and the right air outlet space, so that part of the airflow of the main air duct 530 enters from the air inlet 600 of the main air duct 530 and flows through the relay group 700 and the PCB board group 800 before entering the air outlet space through the notch 134.

[0078] In the above optional embodiments, the PCB board assembly and relay assembly are the main heat sources. They are arranged in the main air duct, and the hot air in the exhaust space is separated by the guidance and separation of the first connecting plate and the second connecting plate. This prevents the hot air that has been heated in the first and second air ducts from affecting the heat dissipation of the PCB board assembly and relay assembly. The cold air entering from the bottom of the main air duct can focus on washing the first charging socket, relay assembly and PCB board assembly located in the middle, and then open to the exhaust space through the opening at the top or on both sides of the connecting plate.

[0079] To further explain, after the airflow in the main air duct washes over the relay group, the airflow path can be divided into two parts. One part of the airflow can flow to the left air outlet space and the right air outlet space on both sides of the first connecting plate and the second connecting plate respectively, and be discharged through the shortest path to avoid accumulation. The other part of the airflow continues to rise and wash over the PCB board group before flowing to the air outlet space through the gap.

[0080] Through the above optional embodiments, the layout of the core control components of the advertising screen charging pile and its dedicated high-efficiency heat dissipation path are constructed. This provides a fast heat dissipation channel with the least resistance, the shortest path, and the convergence of the first air duct and the second air duct at the end of the path for the main heat source generated by the charging pile's own power consumption, ensuring the thermal stability of the advertising screen charging pile itself.

[0081] In an optional embodiment, such as Figure 2 and Figure 6 As shown, the air inlet 600 includes a main air inlet located on the lower cover 120 and a hollow channel located on a column 900 fixedly connected to the bottom of the housing 100. The hollow channel is used for cable installation. The lower part of the column 900 is provided with a vent hole 910 that radially penetrates the hollow channel.

[0082] In this embodiment, the hollow channel of the column is connected to the inner cavity of the housing. The radially penetrating vent at the bottom of the column is designed to draw in ambient air from outside the column. Therefore, in addition to being used for cable laying and routing, the hollow channel of the column in this embodiment also has an air intake function. It should be noted that the cable routing in the hollow channel should not completely block the airflow, and the air intake of the hollow channel is used to assist the air intake of the main air duct. Therefore, the vent provided in this embodiment makes the column both a cable channel and a cooling air duct that directly blows air onto the bottom of the relay group, solving the problem of insufficient cooling or air intake caused by the relay group being mounted high on the back panel and off-center from the air intake (because the relay group is fixed on the back panel, while the air intake is located in the middle of the lower cover, i.e., the relay group is not located directly above the air intake of the lower cover).

[0083] This embodiment provides an alternative air intake path besides the air inlet on the lower cover, namely the hollow channel in the column. This provides a more direct bottom air intake for the relay group located above the main air duct and fixed to the back panel, enhancing its cooling effect. At the same time, the cable routing channel and the heat dissipation air duct are combined into one, simplifying the structure and utilizing the gaps between the cables as ventilation channels, thus achieving efficient use of space.

[0084] On the other hand, another embodiment of the present invention also provides a multi-socket charging management method, which utilizes an electric bicycle advertising screen charging station of one or more of the above-described optional embodiments to perform the following method, including:

[0085] The temperature within the first and second air ducts, separated by the same second heat insulation panel, is monitored in real time, and the following calculations are performed:

[0086] a) The absolute temperature rise of the first air duct ΔT1 = |Temperature of the rear end point T1 - Temperature of the front end point T1' per unit time|; The absolute temperature rise of the second air duct ΔT2 = |Temperature of the rear end point T2 - Temperature of the front end point T2' per unit time|, where the front end point and the rear end point refer to the front time node and the rear time node in a unit time period.

[0087] b) The lateral temperature difference between the first and second air ducts is ΔTc = |T1-T2|. The lateral temperature difference ΔTc reflects the thermal imbalance between the adjacent first and second air ducts. In an ideal situation, if the two charging sockets have the same load and the heat dissipation is uniform, ΔTc should be close to 0. When ΔTc continues to increase, it indicates that thermal pollution is about to occur or has already occurred, with heat spreading from one air duct to another.

[0088] c) The temperature imbalance between the first and second air ducts is η = |ΔT1 - ΔT2| / (ΔT1 + ΔT2 + ε), where ε is a constant to prevent the divisor from being zero, such as 0.001, which is a very small constant used to prevent the denominator from being zero.

[0089] When η exceeds the first threshold and ΔTc continues to increase, the first threshold is 0.5. The judgment period for the continuous increase of ΔTc depends on the actual situation. For example, if there are 5 consecutive sampling periods, it is determined that thermal pollution diffusion between air ducts has occurred inside the shell where the second heat insulation plate is located. The air duct with higher temperature is marked as the heat source air duct, and the other air duct is the affected air duct. The first-level intervention is initiated.

[0090] The swingable guide plate of the second heat insulation plate is controlled to deflect to the side corresponding to the invaded air duct, so that the air inlet of the invaded air duct is guided to the heat source air duct through the swingable guide plate, increasing the flow of cold air through the heat source air duct, enhancing its direct cooling capacity to the heat source and its heat carrying capacity. At the same time, the advertising screen provides an interactive prompt: Local overheating has been detected, and the system has automatically optimized heat dissipation.

[0091] In this embodiment, under normal conditions, the temperature rise of the first and second air ducts on both sides of the same second heat insulation plate should be roughly synchronized, i.e., η is small and ΔTc is stable. When one side (i.e., the first or second charging socket) heats up abnormally or rapidly due to illegal electricity use, its own temperature rise accelerates first, i.e., ΔT1 or ΔT2 increases significantly, leading to a widening of the temperature difference between the first and second air ducts, i.e., ΔTc continues to increase. The high-temperature airflow from the heat source air duct heats the air or structure of the adjacent air duct through thermal radiation and limited air infiltration, causing the temperature of the other air duct (e.g., T2) to also passively rise, but the rate and magnitude of the rise are lower than that of the affected air duct (e.g., T1), thus manifesting as a continuous increase in ΔTc. Consequently, a huge difference in the rate of temperature rise occurs, i.e., η exceeds the standard or exceeds the first threshold (e.g., η > 0.5). The value of η quantifies the degree of uneven heating between the two air ducts. η close to 0 indicates that the heating of the two is comparable; the larger η is (close to 1), the greater the heat generation of one air duct is than the other, and the more severe the system imbalance. By combining ΔTc, a general temperature rise caused by an overall increase in ambient temperature can be excluded, accurately capturing localized thermal imbalances caused by a single heat source. Using ΔTc alone may be affected by overall changes in ambient temperature, and using η alone may fail to detect the onset of lateral heat transfer. Therefore, this embodiment uses an AND condition of η exceeding a first threshold and ΔTc continuously increasing, enabling a high-confidence determination of a diffuse thermal contamination event caused by a single-point overload. Upon identification, a swingable deflector is activated to direct more cool air towards the heat source duct.

[0092] In this embodiment, the oscillating guide vane is deflected towards the affected air duct side (e.g., towards the second air duct side), thereby redirecting the cold air that was originally flowing towards the affected air duct to the heat source air duct (e.g., the first air duct). This directly targets the excessive heat generation in the heat source air duct that causes abnormal η and ΔTc, increasing the flow rate of cold air through the heat source air duct. While the heat generation remains temporarily unchanged (without power reduction), increasing the flow rate can directly reduce the temperature rise of that air duct, such as reducing ΔT1. After ΔT1 is reduced, the numerator of the η value (|ΔT1-ΔT2|) will decrease. Simultaneously, the reduction in ΔT1 also directly helps to reduce ΔTc. This intervention aims to physically suppress the heat source and promote the return of monitoring parameters to the normal range.

[0093] This embodiment utilizes the advertising screen charging pile structure described in the optional embodiments above to identify and initially address the problem of heat pollution diffusion between air ducts, providing a sensitive and reliable way to distinguish between normal uniform heating and dangerous, single-point heat diffusion phenomena. Its primary intervention method (guide plate deflection) is a non-destructive and precise physical adjustment designed to correct heat flow distribution without interrupting charging, greatly improving the user experience.

[0094] In an optional embodiment, the charging management method further includes the following steps:

[0095] After implementing the first-level intervention, an evaluation of the monitoring time window Δt is initiated. The imbalance η(t) and the transverse temperature difference ΔTc(t) are recorded every t seconds (e.g., 1 second). The monitoring time window Δt is set based on the thermal time constant of the system. If it is set to 120 seconds, the time is too short and thermal inertia may cause the intervention effect to not be apparent; if the time is too long, it may delay the escalation of ineffective intervention.

[0096] The linear regression slopes of η(t) and ΔTc(t) within the monitoring time window Δt are calculated and denoted as Slope_η and Slope_ΔTc, respectively. Slope_η and Slope_ΔTc represent the slopes obtained by linear regression of a series of η(t) and ΔTc(t) data points within the monitoring time window Δt, indicating the rate of change of η and ΔTc. The linear regression slopes can be calculated using the least squares method in a commonly used univariate linear regression model. For example, in a monitoring time window of Δt = 120 seconds, and with a fixed period t = 1 second for collecting and storing the values ​​of η and ΔTc, for n data points (t) collected at period t within the monitoring time window Δt... i y i The slope is calculated using the standard least squares formula b=[n*Σ(t)] i *y i )-(Σt i )*(Σy i )] / [n*Σ(t i 2 )-(Σt i ) 2 The calculation shows that t i Representing the i-th sampling time, y i Represents t i The parameter values ​​collected at each time step, i.e., η(t) i ) or ΔTc(t i ), where n represents the total number of valid data points collected within the evaluation window Δt, i.e., n = Δt / sampling period t. The calculated slope b (i.e., Slope_η and Slope_ΔTc) is used to determine the trend of parameter changes:

[0097] When the slope b is less than the set negative threshold, the trend is considered to be downward.

[0098] When the slope b is greater than the set positive threshold, the trend is considered to be upward.

[0099] Those falling between these two extremes are considered to be on a flat trend, but the heat source has not been eradicated.

[0100] Those skilled in the art will understand that the least squares method in a univariate linear regression model is a common calculation method. As not described in the examples above, those skilled in the art can use conventional methods of the prior art to substitute the relevant values ​​of the data points used in this embodiment to calculate the slope, which will not be elaborated on here.

[0101] The percentage decrease of η(t) and ΔTc(t) at the end of the monitoring time window Δt compared to the initial value of the monitoring time window Δt is calculated and denoted as Drop_η% and Drop_ΔTc% respectively. Drop_η% and Drop_ΔTc% are the percentage decrease of the value at the end of the monitoring time window compared to the initial value, representing the magnitude of improvement brought about by the intervention.

[0102] Determine the initiation criteria for secondary intervention. Secondary intervention should be initiated if the following conditions are met simultaneously:

[0103] e) Slope_η≥-0.001 and Slope_ΔTc≥-0.001. If this condition is met, it means that the trend is basically flat or is still deteriorating. In this condition, -0.001 is the slope threshold, which is a negative value close to zero. This condition is more lenient than using Slope_η≥0 and Slope_ΔTc≥0, allowing the parameters to improve very slowly and avoiding accidental upgrades due to small fluctuations.

[0104] f) If Drop_η% < 10% or Drop_ΔTc% < 10%, the improvement is not significant. 10% is the threshold for the percentage decrease. If the improvement is less than 10%, it is considered that the improvement is not significant, indicating that the primary intervention failed to bring about the expected parameter decline.

[0105] Initiate Level 2 intervention:

[0106] The swingable guide vane is controlled to swing to its mechanical limit angle so that the heat source air duct can obtain the maximum air intake.

[0107] Increase the operating power of the cooling fan of the air outlet group on the side where the heat source air duct is located to 80%-100% of the rated power, which directly enhances the suction force on the heat source air duct and the entire side area, and promotes the inflow of more cold air.

[0108] The power limit of the charging socket corresponding to the heat source air duct is set to 65% of the rated value. If the absolute temperature value of the heat source air duct is still rising after the preset limit time, the power limit of the charging socket corresponding to the heat source air duct is further reduced to 40% of the rated value. That is, while increasing the air intake, the heat source input is directly reduced, which can reduce ΔT1 or ΔT2 more quickly and significantly, thereby causing η and ΔTc to drop significantly. The step-by-step reduction of the rated value is to preserve the user's charging function as much as possible while ensuring the suppression effect.

[0109] During secondary intervention, if the absolute temperature of the heat source duct rises by more than 20°C within 120 seconds and reaches the safety threshold, then final intervention is initiated:

[0110] Disconnect the power supply to the charging socket corresponding to the heat source airflow duct, reset the swingable airflow guide plate to the neutral position, and maintain the corresponding side cooling fan at 70% rated power for at least 300 seconds for protective cooling. The advertising screen should display that the charging socket is in a faulty state. The temperature rise rate of 20°C (20°C / 120s≈0.167°C / s) far exceeds the normal charging temperature rise rate (usually <0.05°C / s), and the safety threshold of 90°C is close to the maximum junction temperature or casing temperature limit of commonly used electronic components. When the absolute temperature value of the heat source airflow duct rises by more than 20°C within 120 seconds and reaches the safety threshold, it indicates that even with secondary intervention (increased cooling, reduced power), the heat generation rate of the heat source still far exceeds the system's heat dissipation capacity, which is very likely a serious short circuit, continuous arcing, or malicious illegal use of electricity. Immediately disconnect the power supply to prevent fire.

[0111] This embodiment introduces dynamic evaluation indicators such as monitoring time window, linear regression slope, and percentage change to avoid overreacting to instantaneous fluctuations. Measures are only upgraded when intervention is truly ineffective. Power limiting is coupled with fan speed increase to maximize heat dissipation suppression at the expense of minimizing user disturbance.

[0112] In an optional embodiment, the charging management method further includes the following steps:

[0113] Obtain the temperature T in the left zone of the main air duct. L and right zone temperature T R T L and T R Temperature data is obtained from the left and right zone temperature monitoring points located upstream of the air intake paths corresponding to the left and right air outlet spaces, respectively.

[0114] Real-time calculation of the left and right temperature difference ΔT in the main air duct LR =|T L -T R |, when ΔT is satisfied LR >ΔT th When, ΔT th Based on a pre-set temperature difference threshold, a significant lateral shift in the heat load of the main air duct is determined:

[0115] If T L >T R If the heat load on the left side is higher, the power setting of the cooling fan in the left exhaust group is increased, while the power setting of the cooling fan in the right exhaust group is kept constant.

[0116] If T L <TR If the heat load on the right side is higher, the power setting of the cooling fan in the right exhaust group is increased, while the power setting of the cooling fan in the left exhaust group is maintained.

[0117] When ΔT LR ≤ΔT th At that time, the cooling fans of the left and right air outlet groups are controlled to operate at the same reference power.

[0118] In this embodiment, the temperature monitoring points in the left and right zones can be set at positions within the main air duct corresponding to the left and right airflow splits. Utilizing the independent controllability of the left and right dual fans, independent and differentiated adjustment of the overall heat dissipation intensity of the main air duct is achieved. This automatically compensates for uneven heat dissipation caused by minor differences in internal component layout, external obstruction, or slightly higher heat load on one side, ensuring that core components within the main air duct, such as PCBs and relays, operate in a uniform, low-temperature environment, thereby improving the overall reliability and lifespan of the device.

[0119] The above disclosures are merely one or more preferred embodiments of the present invention, intended to help understand the inventive concept of the technical solution, and are not intended to limit the present invention in any other way. Any other equivalent or conventional substitution schemes made by those skilled in the art based on the features defined by the present invention shall still fall within the scope of the present invention.

Claims

1. An advertising screen charging pile of an electric bicycle, comprising at least one first charging socket (210) located on a front panel (110) of a shell (100) and at least one second charging socket (220) located on a lower cover (120) of the shell (100) and at least one air outlet group (300) located on a back panel (130) of the shell (100), characterized in that, The front panel (110) is provided with a heat insulation plate protruding towards the back panel (130), and the heat insulation plate comprises: a first heat insulation plate (410) located in the middle of the shell (100) and distributed on both sides in the width direction, and a space between the first heat insulation plates (410) on both sides constitutes a main air duct (530); a second heat insulation plate (420) located on both sides of the main air duct (530) and separating the first charging socket (210) from the second charging socket (220) to form a first air duct (510) flowing through the first charging socket (210) and a second air duct (520) flowing through the second charging socket (220); There is a gap between the protruding top surface of the first heat insulation plate (410) and the second heat insulation plate (420) and the back panel (130), which constitutes a vertical plane air duct (540), the air outlet group (300) is provided with an air outlet (310) and a cooling fan (320), and the lower cover (120) is provided with an air inlet (600) corresponding to the main air duct (530), the first air duct (510) and the second air duct (520), respectively. Under the negative pressure provided by the cooling fan (320) and / or the natural upward force of the hot air flow, the air flow entering through the air inlet (600) flows through the main air duct (530), the first air duct (510) and the second air duct (520) respectively, and then enters the vertical plane air duct (540), and flows to the air outlet (310) in the vertical plane air duct (540); The air inlet (600) comprises a first air inlet (610) located in the first air duct (510) and a second air inlet (620) located in the second air duct (520), and a swingable guide plate (421) is arranged between the first air inlet (610) and the second air inlet (620). The swing axis of the swingable guide plate (421) is arranged on the second heat insulation plate (420), and the swing axis is drivingly connected to a micro motor (422) arranged on the front panel (110) through a transmission belt, so that the swingable guide plate (421) guides the air flow of the first air inlet (610) or the second air inlet (620) to the first air duct (510) or the second air duct (520) under the drive of the micro motor (422); The protruding top surface of the second heat insulation plate (420) protrudes beyond the second charging socket (220) in the protruding direction, so that the first charging socket (210) and the second charging socket (220) are separated; The back panel (130) is upwardly inclined and provided with a first connecting plate (131), the protruding end of the first connecting plate (131) is vertically upwardly extended and provided with a second connecting plate (132), the air outlet space between the back panel (130) and the second connecting plate (132) is open on both sides and is connected to the vertical surface air duct (540), the middle part of the air outlet space is provided with a third connecting plate (133), and the third connecting plate (133) separates the air outlet space into a left air outlet space and a right air outlet space, and the air outlet group (300) comprises a left air outlet group and a right air outlet group, and the left air outlet group and the right air outlet group are arranged in the left air outlet space and the right air outlet space respectively.

2. The advertising screen charging pile of the electric bicycle according to claim 1, characterized in that: The second connecting plate (132) is provided with a PCB plate group (800), the middle part of the back panel (130) is provided with a relay group (700) and is located below the first connecting plate (131), and the PCB plate group (800) and the relay group (700) are arranged in the main air duct (530).

3. The advertising screen charging pile of the electric bicycle according to claim 2, characterized in that: The top of the second connecting plate (132) is provided with a notch (134) corresponding to the left air outlet space and the right air outlet space, so that part of the airflow of the main air duct (530) enters the air outlet space from the air inlet (600) of the main air duct (530) and flows through the relay group (700) and the PCB plate group (800) and then enters the air outlet space through the notch (134).

4. The advertising screen charging pile of the electric bicycle according to claim 3, characterized in that: The air inlet (600) comprises a main air inlet located on the lower cover (120) and a hollow channel located on the column (900) fixedly connected to the bottom of the shell (100), and the hollow channel is used for mounting a cable, and the lower part of the column (900) is provided with a ventilation hole (910) which penetrates radially from the hollow channel.

5. A multi-socket charging management method, characterized in that: The steps performed by the advertising screen charging pile of the electric bicycle according to any one of claims 1-4 are as follows, comprising: Real-time monitoring of the temperature in the first air duct (510) and the second air duct (520) separated by the same second heat insulation plate (420) and calculating: a) the absolute temperature rise ΔT1 of the first air duct (510) = |the temperature at the rear end point T1 minus the temperature at the front end point T1' in a unit of time|; the absolute temperature rise ΔT2 of the second air duct (520) = |the temperature at the rear end point T2 minus the temperature at the front end point T2' in a unit of time|; b) the lateral temperature difference ΔTc between the first air duct (510) and the second air duct (520) = |T1-T2|; c) the imbalance degree η of the temperature rise of the first air duct (510) and the second air duct (520) = |ΔT1-ΔT2| / (ΔT1+ΔT2 +ε), wherein ε is a constant to prevent the divisor from being zero; When η exceeds the first threshold value and ΔTc continues to increase, it is determined that air duct inter-thermal pollution diffusion occurs inside the shell (100) where the second heat insulation plate (420) is located, wherein the air duct with higher temperature is marked as the heat source air duct, and the other air duct is the invaded air duct, and a first-level intervention is started: ​ ​ The swingable guide vanes (421) of the second heat insulation plate (420) are controlled to deflect to the corresponding side of the affected air duct, so that the air inlet of the affected air duct guides the airflow to the heat source air duct through the swingable guide vanes (421), increases the flow of cold air through the heat source air duct, strengthens the direct cooling capacity of the heat source and the carrying capacity of the heat flow, and at the same time, the advertisement screen displays an interactive prompt: local overheating is detected, and the system has automatically optimized heat dissipation.

6. The multi-socket charging management method of claim 5, wherein, Further comprising the following steps: After the first-level intervention is performed, the evaluation of the monitoring time window Δt is started, the imbalance degree η(t) and the lateral temperature difference ΔTc(t) are recorded once every t seconds, the linear regression slopes of η(t) and ΔTc(t) in the monitoring time window Δt are calculated, and are denoted as Slope_η and Slope_ΔTc respectively; the drop percentages of the values of η(t) and ΔTc(t) at the end of the monitoring time window Δt compared with the initial values of the monitoring time window Δt are calculated, and are denoted as Drop_η% and Drop_ΔTc% respectively; The starting condition of the second-level intervention is determined, and the second-level intervention is started when the following conditions are met: e) Slope_η≥-0.001 and Slope_ΔTc≥-0.001, if met, it means that the trend is basically flat or still deteriorating; f) Drop_η%<10% or Drop_ΔTc%<10%, if met, it means that the improvement is not obvious; The second-level intervention is started: The swingable guide vanes (421) are controlled to swing to the mechanical limit angle, so that the heat source air duct obtains the maximum air inlet; The operating power of the heat dissipation fan (320) of the air outlet group (300) corresponding to the side where the heat source air duct is located is increased to 80%-100% of the rated power; The upper limit of the power of the charging socket corresponding to the heat source air duct is set to 65% of the rated value, and if the absolute temperature value of the heat source air duct is still rising after the preset limit time, the upper limit of the power of the charging socket corresponding to the heat source air duct is further adjusted to 40% of the rated value; During the second-level intervention, if the absolute temperature value of the heat source air duct rises by more than 20°C within 120 seconds and reaches the safety threshold, the final intervention is started: The power supply of the charging socket corresponding to the heat source air duct is cut off, the swingable guide vanes (421) are reset to the neutral position, and the power of the corresponding side heat dissipation fan (320) is maintained at 70% of the rated power for continuous operation for at least 300 seconds, protective cooling is performed, and the advertisement screen displays that the charging socket is in a fault state.

7. The multi-socket charging management method of claim 6, wherein, Further comprising the following steps: obtaining a left zone temperature T L and a right zone temperature T R , wherein T L and T R are obtained respectively by a left zone temperature monitoring point and a right zone temperature monitoring point arranged upstream of the air inlet path corresponding to the left air outlet space and the right air outlet space; Real-time calculation of the temperature difference ΔT between the left and right of the main air duct (530) LR = |T L - T R |, when ΔT LR > ΔT th , ΔT th is a pre-set temperature difference threshold, and it is determined that the heat load of the main air duct (530) has a significant lateral deviation: If T L > T R , it is determined that the left side heat load is higher, and the power setting value of the heat dissipation fan (320) of the left air outlet group is increased, while the power setting value of the heat dissipation fan (320) of the right air outlet group is maintained. If T L If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R If T R When ΔT LR ≤ ΔT th , the cooling fans (320) of the left and right air outlet groups are controlled to operate at the same reference power.

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