Starting control system of container cooling fan

Abstract

The utility model relates to the technical field of transformer heat dissipation, in particular to a starting control system of a container heat dissipation fan, which is applied to a battery energy storage container and comprises an electrical cabin, a power supply and a battery cabin, and a plurality of groups of heat dissipation fan components, a power supply switch and a control component are arranged in the electrical cabin; the power supply switch is electrically connected with a power supply; current detection is achieved through a current relay through a starting control circuit used for controlling starting and stopping of a cooling fan assembly, and therefore starting of the cooling fan assembly is controlled through current; when the current or the power exceeds a preset threshold value, the purpose of predicting the temperature rise is achieved, so that the cooling fan assembly is started in advance; the cooling fan assembly is started until the temperature rise caused by heat accumulation is avoided; therefore, the working state and the potential heat generation of the equipment can be predicted. And meanwhile, the fan is stopped after the heat is completely dissipated through the temperature controller.

Description

Technical Field

[0001] This utility model relates to the field of transformer heat dissipation technology, specifically to a start-up control system for a container cooling fan. Background Technology

[0002] Battery energy storage containers are widely used in industrial and commercial applications and new energy support. They mainly consist of a battery compartment and an electrical compartment, with the electrical compartment including a bidirectional power converter, an auxiliary power supply section, and a communication section.

[0003] Due to the characteristics of batteries, the battery compartment and the electrical compartment are generally completely separated. The optimal operating temperature of a battery is typically 20-25°C, therefore air conditioning is installed in the battery compartment for cooling; alternatively, liquid-cooled batteries are used. The electrical compartment usually uses fan cooling to expel hot air from the compartment, ensuring the optimal operating temperature of all electrical components. Since the electrical compartment uses fan cooling, a fan activation logic needs to be configured. This solution uses a temperature sensor to determine when the fan should start. The temperature sensor monitors the ambient temperature in real time; when the temperature exceeds a set value, the fan starts; when the temperature falls below the set value, the fan stops.

[0004] like Figure 4 As shown, in the prior art, when the temperature sensor detects that the temperature has reached the limit, sensor-K changes from open to closed; thus, the coil of contactor KM is energized, and the contacts (1-2, 3-4) of KM close, thereby energizing the fan and starting it for cooling; when the temperature drops below the limit, sensor-K changes from closed to open, thus de-energizing the coil of contactor KM, and the contacts (1-2, 3-4) of KM open, thereby de-energizing the fan and stopping it for cooling.

[0005] Although the solution is simple, it also has limitations. For example, because the temperature rise is a continuous process with "inertia," when the temperature probe detects that the actual temperature has reached the set value, it means that the cabinet environment has already started to heat up, and the components have been forced to withstand high temperatures for a period of time. When the temperature reaches the sensor's activation threshold, the fan starts to dissipate heat. However, due to the accumulation of heat, the temperature will not stop rising immediately, but will continue to rise until heat generation and heat dissipation reach a balance. Then, due to the fan's heat dissipation capacity, the heat will be exhausted outside the cabinet until the temperature drops to the set value. At this point, the temperature controller stops the fan, thus achieving a dynamic balance.

[0006] During this process, because the cooling fan cannot predict the heat generation, it often only turns on after the heat has accumulated and the temperature has risen. This can cause electrical components to overheat for a period of time, which is detrimental to the operation and normal lifespan of the electrical components. Utility Model Content

[0007] To address the shortcomings and deficiencies of existing technologies, this invention provides a container cooling fan start-up control system that can predict temperature rise in advance, activate the cooling fan ahead of time, reduce temperature rise, and extend the lifespan of electrical components.

[0008] To achieve the above objectives, the present invention provides a starting control system for a container cooling fan, applicable to a battery storage container. The starting control system includes an electrical compartment, a power supply, and a battery compartment. The electrical compartment contains multiple sets of cooling fan assemblies, a power switch, and a control component. The power switch is electrically connected to the power supply. The system also includes a starting control circuit for controlling the opening and closing of the cooling fan assemblies, which is electrically connected to the fan assemblies. The starting control circuit includes a starting contactor, a first intermediate relay, a second intermediate relay, a current relay, a temperature controller for detecting the internal temperature of the electrical compartment, and a temperature control switch. The current relay is electrically connected to the control component.

[0009] Further; the first intermediate relay includes an intermediate relay coil KA1, the second intermediate relay includes an intermediate relay coil KA2; the starting contactor includes a starting contactor coil KM, the power supply switch includes a first control contact and a second control contact; one end of the intermediate relay coil KA1 is electrically connected to the cooling fan assembly, and the other end is electrically connected to the neutral wire N; the first control contact is disposed between the intermediate relay coil KA1 and the neutral wire N; one end of the intermediate relay coil KA2 is electrically connected to the temperature control switch, and the other end is electrically connected to the intermediate relay coil KA1; one end of the starting contactor coil KM is electrically connected to the intermediate relay coil KA1, and the other end is electrically connected to the live wire L; the second control contact is disposed between the starting contactor coil KM and the live wire L.

[0010] Furthermore, the starting contactor also includes a first contact and a second contact. One end of the first contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the temperature control switch. One end of the second contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the common terminal of the temperature controller and the intermediate relay coil KA2.

[0011] Furthermore, the first intermediate relay also includes a first contact, a second contact, and a third contact; one end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the starting contactor coil KM; the second contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA2; one end of the third contact is electrically connected to the second contact, and the other end is electrically connected to the current relay.

[0012] Furthermore, the second intermediate relay also includes a first contact, which is electrically connected to the second contact of the first intermediate relay, and the other end is electrically connected to the intermediate relay coil KA1.

[0013] Furthermore, the current relay includes a current relay coil, a first contact, and a second contact. The current relay coil is electrically connected to the control component. One end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA1. One end of the second contact is electrically connected to the temperature controller, and the other end is electrically connected to the third contact of the first intermediate relay.

[0014] The beneficial effects of this utility model are:

[0015] This invention provides a start-up control system for a container cooling fan. The start-up control circuit controls the on / off operation of the cooling fan assembly. A current relay detects current, allowing the cooling fan assembly to be started based on current. When the current or power exceeds a preset threshold, the system predicts the temperature rise and starts the cooling fan assembly in advance, preventing heat accumulation and temperature increases before activation. This allows for prediction of the equipment's operating status and potential heat generation. Simultaneously, a temperature controller ensures that all heat is dissipated before stopping the fan. This minimizes the risk of overheating in the battery storage container's cabinet, enabling early temperature rise prediction and timely activation of the cooling fan assembly, thus reducing temperature rise and extending the lifespan of electrical components. Attached Figure Description

[0016] Figure 1 This is a block diagram of the start-up control system for a container cooling fan according to the present invention;

[0017] Figure 2 This is a circuit diagram of the start-up control system for a container cooling fan according to the present invention.

[0018] Figure 3 This is a circuit diagram of another embodiment of the starting control system for a container cooling fan according to the present invention;

[0019] Figure 4 This is a circuit diagram of the prior art in the start-up control system of a container cooling fan according to the present invention. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] This utility model proposes a start-up control system for a container cooling fan.

[0024] In the embodiments of this utility model, such as Figure 1-2 As shown, a starting control system for a container cooling fan is applied to a battery storage container. The starting control system includes an electrical compartment, a power supply, and a battery compartment. Multiple cooling fan assemblies, a power switch, and a control component are installed within the electrical compartment. The power switch is electrically connected to the power supply. The system is characterized by further including a starting control circuit for controlling the on / off operation of the cooling fan assemblies, which is electrically connected to the fan assemblies. The starting control circuit includes a starting contactor, a first intermediate relay, a second intermediate relay, a current relay, a temperature controller for detecting the internal temperature of the electrical compartment, and a temperature control switch. The current relay is electrically connected to the control component.

[0025] In this embodiment, the first intermediate relay includes an intermediate relay coil KA1, and the second intermediate relay includes an intermediate relay coil KA2; the starting contactor includes a starting contactor coil KM, and the power supply switch includes a first control contact and a second control contact; one end of the intermediate relay coil KA1 is electrically connected to the cooling fan assembly, and the other end is electrically connected to the neutral wire N; the first control contact is disposed between the intermediate relay coil KA1 and the neutral wire N; one end of the intermediate relay coil KA2 is electrically connected to the temperature control switch, and the other end is electrically connected to the intermediate relay coil KA1; one end of the starting contactor coil KM is electrically connected to the intermediate relay coil KA1, and the other end is electrically connected to the live wire L; the second control contact is disposed between the starting contactor coil KM and the live wire L.

[0026] In this embodiment, the start contactor further includes a first contact and a second contact. One end of the first contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the temperature control switch. One end of the second contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the common terminal of the temperature controller and the intermediate relay coil KA2.

[0027] In this embodiment, the first intermediate relay further includes a first contact, a second contact, and a third contact; one end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the starting contactor coil KM; the second contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA2; one end of the third contact is electrically connected to the second contact, and the other end is electrically connected to the current relay.

[0028] In this embodiment, the second intermediate relay further includes a first contact, which is electrically connected to the second contact of the first intermediate relay, and the other end is electrically connected to the intermediate relay coil KA1.

[0029] In this embodiment, the current relay includes a current relay coil, a first contact, and a second contact. The current relay coil is electrically connected to the control component. One end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA1. One end of the second contact is electrically connected to the temperature controller, and the other end is electrically connected to the third contact of the first intermediate relay.

[0030] Specifically, the current relay of this application can also replace the success rate relay. In order to achieve the purpose of predicting temperature rise, it is necessary to sense the change of current in real time. When the current exceeds the set value, the cooling fan is started immediately, instead of waiting for the temperature to rise before turning on the cooling fan assembly. The current detection is achieved by using a current relay or a power relay. When the current reaches the set value, a node signal is output to turn on the cooling fan assembly.

[0031] Meanwhile, in order to ensure that the cooling fan assembly can dissipate all the heat, a traditional temperature sensor can be used to detect the temperature. When the current decreases, the temperature sensor will determine the temperature; the cooling fan assembly will only stop when the temperature drops to the set value.

[0032] In this application, the cooling fan assembly can start immediately as long as the current is greater than the set value, without waiting for the temperature to rise before turning on the cooling fan assembly; at the same time, a temperature judgment is added, and the cooling fan assembly will not stop rotating until the temperature drops below the set temperature value; this design ensures that the cooling fan assembly dissipates all heat; thereby achieving the purpose of predicting and controlling the temperature rise in a timely manner through current or power control, and reducing the internal temperature of the cabinet.

[0033] It should be noted that the current relay coil used to sample the current in the circuit of the control component in this application is not shown in this application; the first contact (1-2) of the current relay LJ is a normally open contact, and the second contact (3-4) of the current relay LJ is a normally closed contact. When the current value in the battery storage container reaches the set limit, the first contact (1-2) of the current relay LJ changes from the normally open state to the closed state; the second contact (3-4) of the current relay LJ changes from the normally closed state to the open state, so that the temperature controller sensor will not be energized and start; the intermediate relay coil KA1 is energized, and the first contact (1-2), second contact (3-4), and third contact (5-6) of the intermediate relay are normally open contacts, and the first contact (1-2), second contact (3-4), and third contact (5-6) of the intermediate relay are closed. This causes the first intermediate relay to self-lock and start the contactor coil KM, thereby causing the cooling fan assembly to start cooling.

[0034] When the main circuit current of the control component decreases during system operation, the first contact (1-2) of the current relay LJ opens and the second contact (3-4) closes; the first intermediate relay remains self-locking and energized, thus keeping the cooling fan assembly running; at the same time, the temperature controller sensor is energized and starts. If the temperature does not reach the low-temperature limit during the current reduction process, the cooling fan assembly will continue to run, thus ensuring heat dissipation.

[0035] If the temperature drops to the set limit, the temperature control switch sensor-K changes from the open state to the closed state, energizing the intermediate relay coil KA2. This immediately releases the self-locking of the first intermediate relay and de-energizes the starting contactor. Consequently, the starting contactor coil KM is de-energized, and the first contact (1-2) and the second contact (3-4) of the starting contactor disconnect, causing the cooling fan assembly to lose power and stop cooling. The temperature controller sensor returns to its original state, allowing the battery storage container to return to its initial state.

[0036] like Figure 3 As shown, it should be noted that in actual use, a time relay can be used instead of a temperature controller; the current relay LJ is still used as the starting element of the cooling fan assembly; only the temperature controller is replaced by a time relay; the current is still used as the starting and stopping criterion for the cooling fan assembly; when the current decreases, the cooling fan assembly is not stopped immediately; at this time, the time relay starts to delay, and after the delay time is reached, the cooling fan assembly is stopped; the purpose is to allow the cooling fan assembly to expel the remaining heat outside the cabinet during the delay time.

[0037] When the current value in the system reaches the set limit, the first contact (1-2) of the current relay LJ changes from the normally open state to the closed state; the second contact (3-4) of the current relay LJ changes from the normally closed state to the open state, preventing the temperature controller sensor from being energized and starting; the intermediate relay coil KA1 is energized, and the first contact (1-2), second contact (3-4), and third contact (5-6) of the intermediate relay become normally open contacts, closing. This causes the first intermediate relay to self-lock and then energize the contactor coil KM, thereby activating the cooling fan assembly for heat dissipation.

[0038] When the main circuit current of the control component decreases during system operation, the first contact (1-2) of the current relay LJ opens and the second contact (3-4) closes; the first intermediate relay remains in a self-locking energized state, thus keeping the cooling fan assembly running; simultaneously, the time controller ST is energized and starts. The time controller ST begins to close after a delay, and the cooling fan continues to run to dissipate heat. When the time controller ST reaches the delay time, the time controller ST contact (1-2) closes, and the intermediate relay coil KA2 is energized, immediately releasing the self-locking of the first intermediate relay, causing the intermediate relay coil KA1 to be de-energized; thus, the starting contactor coil KM is de-energized, and the first contact (1-2) and the second contact (3-4) of the starting contactor open, thereby de-energizing the cooling fan assembly and stopping the cooling fan assembly from dissipating heat; the time controller ST returns to its original state, allowing the battery energy storage container to return to its initial state.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A start-up control system for a container cooling fan, applied to a battery storage container, the start-up control system comprising an electrical compartment, a power supply, and a battery compartment, wherein the electrical compartment is equipped with multiple sets of cooling fan assemblies, a power supply switch, and control components; the power supply switch is electrically connected to the power supply, characterized in that... It also includes a start-up control circuit for controlling the on and off of the cooling fan assembly, the start-up control circuit being electrically connected to the fan assembly; the start-up control circuit includes a start-up contactor, a first intermediate relay, a second intermediate relay, a current relay, a temperature controller for detecting the internal temperature of the electrical compartment, and a temperature control switch, the current relay being electrically connected to the control assembly.

2. The start-up control system for a container cooling fan as described in claim 1, characterized in that, The first intermediate relay includes an intermediate relay coil KA1, and the second intermediate relay includes an intermediate relay coil KA2; the starting contactor includes a starting contactor coil KM, and the power supply switch includes a first control contact and a second control contact; one end of the intermediate relay coil KA1 is electrically connected to the cooling fan assembly, and the other end is electrically connected to the neutral wire N; the first control contact is located between the intermediate relay coil KA1 and the neutral wire N; one end of the intermediate relay coil KA2 is electrically connected to the temperature control switch, and the other end is electrically connected to the intermediate relay coil KA1; one end of the starting contactor coil KM is electrically connected to the intermediate relay coil KA1, and the other end is electrically connected to the live wire L; the second control contact is located between the starting contactor coil KM and the live wire L.

3. The start-up control system for a container cooling fan as described in claim 2, characterized in that, The starting contactor further includes a first contact and a second contact. One end of the first contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the temperature control switch. One end of the second contact is electrically connected to the cooling fan assembly, and the other end is electrically connected to the common terminal of the temperature controller and the intermediate relay coil KA2.

4. The start-up control system for a container cooling fan as described in claim 3, characterized in that, The first intermediate relay further includes a first contact, a second contact, and a third contact; one end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the starting contactor coil KM; the second contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA2. One end of the third contact is electrically connected to the second contact, and the other end is electrically connected to the current relay.

5. The start-up control system for a container cooling fan as described in claim 4, characterized in that, The second intermediate relay also includes a first contact, which is electrically connected to the second contact of the first intermediate relay, and the other end is electrically connected to the intermediate relay coil KA1.

6. The start-up control system for a container cooling fan as described in claim 5, characterized in that, The current relay includes a current relay coil, a first contact, and a second contact. The current relay coil is electrically connected to the control component. One end of the first contact is electrically connected to the second control contact, and the other end is electrically connected to the intermediate relay coil KA1. One end of the second contact is electrically connected to the temperature controller, and the other end is electrically connected to the third contact of the first intermediate relay.

Images