Air-cooled container type energy storage battery cabin energy-saving ventilation system

Abstract

The utility model belongs to the field of ventilation of container type battery cabins, and provides an energy-saving ventilation system of an air-cooled container type energy storage battery cabin in order to solve the problems that the cooling effect of a battery module at the bottom of the battery cabin is poor and the cooling energy consumption of an air conditioning system is high. The air conditioner comprises an air handling unit, a static pressure box, an air return pipe, an air supply pipe, a fresh air pipe, an axial flow fan, an electric air valve and a controller. The air handling unit is in a lower-air-supply and upper-air-return type. A first air opening of the air handling unit is connected with the static pressure box, and a second air opening of the air handling unit is connected with the air supply pipe. The static pressure box is arranged above the air handling unit; one end of the plenum chamber is connected with the fresh air pipe, and the other end is connected with the return air pipe; a first electric air valve is arranged on the fresh air pipe and is connected with the controller; a second electric air valve is arranged on the air return pipe and is connected with the controller; the air handling unit and the axial flow fan are both connected with the controller and the fire alarm system. And a natural cold source is fully utilized.

Description

Technical Field

[0001] The utility model belongs to the field of container-type battery cabin ventilation, and in particular relates to an air-cooled container-type energy storage battery cabin energy-saving ventilation system. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Containerized energy storage battery compartments have the characteristics of tightly arranged batteries and a relatively closed environment. In addition, a large amount of heat energy is released during the battery charging and discharging process. If the temperature cannot be effectively reduced, the operating temperature of the battery module will easily increase, which will affect the charging and discharging performance and safety of the system.

[0004] The inventors found that the conventional container-type energy storage battery cabin air cooling technology has the following problems:

[0005] (1) The top-supply and bottom-return air method is adopted. The hot air in the battery compartment rises and flows in the countercurrent with the cold air sent in from the top. The flow resistance of the cold air to the bottom of the battery compartment becomes larger, and there is heat exchange during the flow process, causing the temperature to rise, which can easily lead to poor cooling effect of the battery module at the bottom of the battery compartment.

[0006] (2) During the air-cooling process of the conventional containerized energy storage battery cabin, when the ambient temperature is lower than the designed air supply temperature, the natural cold source cannot be fully utilized, resulting in high cooling energy consumption of the air-conditioning system. Utility Model Content

[0007] In order to solve the technical problems of poor cooling effect of battery modules at the bottom of the battery compartment and high cooling energy consumption of the air-conditioning system existing in the above-mentioned background technology, the utility model provides an air-cooled container-type energy storage battery compartment energy-saving ventilation system, which adopts a downward air supply and upward air return method to realize replacement ventilation of the battery compartment, and solves the problem of poor cooling effect of battery modules at the bottom of the battery compartment caused by countercurrent of cold and hot air; and a fresh air system is added. When the ambient temperature is lower than the designed air supply temperature, the natural cold source (low-temperature ambient cold air) is fully utilized to reduce the operating time of the air-conditioning cold source equipment and save operating costs.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An air-cooled container-type energy storage battery cabin energy-saving ventilation system, comprising: an air handling unit, a static pressure box, a return air duct, an air supply duct, a fresh air duct, an axial flow fan, a first electric air valve, a second electric air valve and a controller;

[0010] The air handling unit is of the bottom air supply and top air return type; the first air outlet of the air handling unit is connected to the static pressure box, and the second air outlet of the air handling unit is connected to the air supply pipe;

[0011] The static pressure box is arranged above the air handling unit; one end of the static pressure box is connected to the fresh air duct, and the other end is connected to the return air duct; the fresh air duct is provided with a first electric air valve, and the first electric air valve is connected to the controller; the return air duct is provided with a second electric air valve, and the second electric air valve is connected to the controller;

[0012] The axial flow fan is arranged at the top of the side wall of the containerized energy storage battery compartment, and is used to discharge the hot air in the containerized energy storage battery compartment directly out of the compartment;

[0013] The air handling unit and the axial flow fan are both connected to the controller for communication; the air handling unit and the axial flow fan are both connected to the fire alarm system.

[0014] Among them, the air handling unit can complete functions such as air filtration, cooling and dehumidification, heating and aerodynamics. It is used to filter, dehumidify and adjust the temperature of the air to meet the preset cleanliness, temperature and humidity requirements in the energy storage battery compartment and deliver it into the battery compartment.

[0015] As an implementation manner, a first electric fire damper is provided at the outlet of the air supply duct.

[0016] As an implementation mode, the first electric fire damper is connected to a fire alarm system.

[0017] As an implementation mode, a second electric fire damper is provided on the return air duct.

[0018] As an implementation mode, the second electric fire damper is connected to a fire alarm system.

[0019] As an implementation manner, rainproof louvers are provided at the air inlet of the fresh air duct.

[0020] As an implementation mode, rainproof louvers are provided at the air outlet of the axial flow fan.

[0021] As an embodiment, the controller is also connected to a temperature detection device, and the temperature detection device is used to detect the temperature in the container-type energy storage battery compartment and transmit it to the controller.

[0022] As an implementation mode, the first air outlet of the air handling unit is connected to the static pressure box through a first flexible connection.

[0023] As an implementation mode, the second air outlet of the air handling unit is connected to the air supply pipe through a second flexible connection.

[0024] The beneficial effects of the utility model are:

[0025] The air handling unit of the utility model adopts a downward air supply and upward air return method. The cold air is delivered to the container-type energy storage battery compartment through the first air outlet at the bottom of the unit. Moreover, when the ambient temperature is lower than the designed air supply temperature, the outdoor fresh air can be directly delivered to the container-type energy storage battery compartment through the static pressure box and the air handling unit, making full use of the natural cold source (low-temperature air). It not only solves the problem of poor cooling effect of the battery module at the bottom of the battery compartment caused by the countercurrent of cold and hot air, but also reduces the operating time of the air-conditioning cold source facilities and saves operating costs.

[0026] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0028] Figure 1 It is a structural schematic diagram of an energy-saving ventilation system for an air-cooled containerized energy storage battery cabin according to an embodiment of the utility model.

[0029] Among them, 100, container-type energy storage battery compartment; 101, air handling unit; 102, first flexible connection; 103, air duct; 104, static pressure box; 105, air conditioning cold source; 106, refrigerant pipe; 201, second flexible connection; 202, air supply duct; 203, first electric fire damper; 301, first electric air valve; 302, fresh air duct; 401, second electric air valve; 402, second electric fire damper; 403, return air duct; 404, return air outlet; 501, third electric fire damper; 502, axial flow fan; 601, temperature detection device; 602, control box. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] according to Figure 1 As shown, this embodiment provides an air-cooled containerized energy storage battery cabin energy-saving ventilation system, including: an air handling unit 101, a static pressure box 104, a return air duct 403, an air supply duct 202, a fresh air duct 302, an axial flow fan 502, a first electric air valve 301, a second electric air valve 401 and a controller; the air handling unit 101 is a bottom-sending and top-returning type, and is arranged in the containerized energy storage battery cabin 100; the air handling unit 101 is connected to the air conditioning cold source 105 through a refrigerant pipe 106. The first air outlet of the air handling unit 101 is connected to the static pressure box 104 through a flexible connection (such as the first flexible connection 102) and an air duct 103 in sequence; the static pressure box 104 is arranged above the air handling unit 101; one end of the static pressure box 104 is connected to the fresh air duct 302, and the other end is connected to the return air duct 403; the second air outlet of the air handling unit 101 is connected to the supply air duct 202 through a flexible connection (such as the second flexible connection 201); the axial flow fan 502 is arranged at the top of the side wall of the containerized energy storage battery cabin 100, so as to directly discharge the hot air in the containerized energy storage battery cabin out of the cabin.

[0034] The first flexible connection 102 and the second flexible connection 201 can both be implemented by using hoses, and their structures and connection methods are both existing technologies.

[0035] In this embodiment, the return air duct 403 is connected to the return air port 404, and the opening of the return air port 404 is set downward, which is conducive to realizing the downward delivery and upward return circulation. Among them, the number and area of ​​the return air port 404 can be specifically set by those skilled in the art according to actual conditions.

[0036] In one or more embodiments, rainproof louvers are provided at the air inlet of the fresh air duct 302. Rainproof louvers are also provided at the air outlet of the axial flow fan 502.

[0037] In this embodiment, a controller, a fire alarm and a temperature detection device 601 are also provided inside the containerized energy storage battery compartment. The controller is connected to the air handling unit 101, the axial flow fan 502, the first electric air valve 301 and the second electric air valve 401 in communication. The temperature detection device 601 is used to detect the temperature inside the containerized energy storage battery compartment and transmit it to the controller. In this embodiment, the controller is provided in the control box 602.

[0038] In one or more embodiments, a first electric fire damper 203 is provided at the outlet of the air supply pipe 202, and the first electric fire damper 203 is connected to a fire alarm system.

[0039] In some embodiments, a first electric air valve 301 is provided on the fresh air duct 302, and the first electric air valve 301 is connected to a controller.

[0040] In other embodiments, the air handling unit 101 and the axial flow fan 502 are also connected to a fire alarm system. The return air duct 403 is provided with a second electric air valve 401 and a second electric fire damper 402, wherein the second electric fire damper 402 is connected to the fire alarm system, and the second electric air valve 401 is connected to a controller.

[0041] In one or more embodiments, a third electric fire damper is further provided on the axial flow fan 502, and the third electric fire damper is connected to the fire alarm system.

[0042] It should be noted here that the controller can be implemented using an existing programmable chip, such as FPGA, etc. The specific model can be specifically set by technical personnel in this field according to actual conditions, and will not be described in detail here.

[0043] In addition, the temperature detection device can be implemented by using an existing temperature sensor chip. The specific model can be set by those skilled in the art according to actual conditions, which will not be described in detail here.

[0044] The fire alarm system may be implemented using existing fire alarms, such as smoke alarms, etc. The specific model may be selected by technicians in this field according to specific working conditions.

[0045] It should be noted that in this embodiment, the first electric fire damper, the second electric fire damper, the first electric air valve and the second electric air valve are all existing equipment on the market. Technical personnel in this field can select the corresponding model according to specific working conditions, which will not be described in detail here.

[0046] The working process of the air-cooled containerized energy storage battery cabin energy-saving ventilation system of this embodiment is as follows:

[0047] (1) Outdoor low-temperature air or return air from the cooled battery compartment is directly delivered to the containerized energy storage battery compartment through the lower air outlet of the air handling unit 101. The hot air in the containerized energy storage battery compartment is directly discharged to the outside through the axial flow fan 502, or enters the air handling unit 101 through the return air outlet 404, the return air duct 403, the second electric fire damper 402, the second electric air valve 401, the static pressure box 104, the air duct 103 and the first flexible connection 102. The cold air is delivered by the lower air outlet of the fresh air unit and discharged by the upper return air outlet, and this cycle repeats.

[0048] (2) When the ambient temperature in the containerized energy storage battery compartment is higher than the design air supply temperature T0:

[0049] The air-cooled containerized energy storage battery cabin energy-saving ventilation system operates in cooling mode. At this time, the air conditioning cold source 105 is started, the air handling unit 101 is running, the second electric air valve 401 on the return air duct is opened, the first electric air valve 301 is closed, and the axial flow fan 502 of the energy storage container is turned off. The low-temperature refrigerant generated by the operation of the air conditioning cold source 105 is transported to the air handling unit 101 through the refrigerant pipe 106, and the return air is cooled, pressurized by the fan, and then sent into the containerized energy storage battery cabin through the second flexible connection 201, the air supply pipe 202 and the first electric fire damper 203. The hot air in the battery cabin enters the air handling unit 101 through the return air port 404, the return air duct 403, the second electric fire damper 402, the second electric air valve 401, the static pressure box 104, the air duct 103 and the first flexible connection 102. The refrigerant heated by the return air enters the air conditioning host for cooling, and this goes back and forth. Among them, the axial flow fan 502 is turned off and used for ventilation after fire extinguishing.

[0050] The temperature detection device 601 constantly monitors the temperature in the battery compartment, and when the designed temperature is reached, a control signal is fed back to the control box 602 to stop the operation of the fresh air unit 101, the air conditioning cold source 105, and the second electric air valve 401.

[0051] (3) When the ambient temperature in the containerized energy storage battery compartment is equal to or lower than the design air supply temperature T0:

[0052] The air-cooled containerized energy storage battery cabin energy-saving ventilation system operates in a fresh air mode. At this time, the air conditioning cold source 105 is turned off, the air handling unit 101 is running, the first electric air valve 301 is opened, the air valve 401 on the return air duct is closed, and the axial flow fan 502 of the energy storage container is turned on. The outdoor low-temperature air enters the air handling unit 101 through the fresh air duct 302, the first electric air valve 301, the static pressure box 104, the air duct 103 and the first flexible connection 102. After being pressurized by the fan, it is sent into the containerized energy storage battery cabin through the second flexible connection 201, the air supply duct 202 and the first electric fire damper 203. The hot air in the battery cabin is discharged to the outside through the axial flow fan 502 arranged at the top, and the residual heat in the cabin is discharged to ensure the set appropriate temperature for the normal operation of the battery. Among them, the axial flow fan 502 is also used for ventilation after fire extinguishing.

[0053] The temperature detection device 601 constantly monitors the temperature in the battery compartment, and when the designed temperature is reached, a control signal is fed back to the control box 602 to stop the operation of the fresh air unit 101, the first electric air valve 301 and the axial flow fan 502.

[0054] The air handling unit of this embodiment adopts a downward air supply and upward air return method, and the cold air transmitted by the air-conditioning main unit is transported to the container-type energy storage battery compartment through the supply air duct, and the air in the fresh air duct and the return air duct is also sent to the air handling unit through the static pressure box. In this way, replacement ventilation of the battery compartment and the ambient temperature are lower than the design working conditions, and the natural cold source (low temperature environment) is fully utilized. It not only solves the problem of poor cooling effect of the battery module at the bottom of the battery compartment caused by the countercurrent of cold and hot air, but also reduces the operating time of the air conditioner and saves operating costs.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air-cooled containerized energy storage battery cabin energy-saving ventilation system, characterized in that: include: Air handling unit, static pressure box, return air duct, supply air duct, fresh air duct, axial flow fan, first electric air valve, second electric air valve and controller; The air handling unit is of the bottom air supply and top air return type; the first air outlet of the air handling unit is connected to the static pressure box, and the second air outlet of the air handling unit is connected to the air supply pipe; The static pressure box is arranged above the air handling unit; one end of the static pressure box is connected to the fresh air duct, and the other end is connected to the return air duct; the fresh air duct is provided with a first electric air valve, and the first electric air valve is connected to the controller; the return air duct is provided with a second electric air valve, and the second electric air valve is connected to the controller; The axial flow fan is arranged at the top of the side wall of the containerized energy storage battery compartment to discharge the hot air in the containerized energy storage battery compartment directly out of the compartment; the air handling unit and the axial flow fan are both communicatively connected to the controller; the air handling unit and the axial flow fan are also connected to the fire alarm system.

2. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The outlet of the air supply pipe is provided with a first electric fire damper.

3. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 2, characterized in that: The first electric fire damper is connected to the fire alarm system.

4. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The return air duct is provided with a second electric fire damper.

5. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 4, characterized in that: The second electric fire damper is connected to the fire alarm system.

6. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The air inlet of the fresh air duct is provided with rainproof shutters.

7. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The air outlet of the axial flow fan is provided with rainproof shutters.

8. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The controller is also connected to a temperature detection device, which is used to detect the temperature in the container-type energy storage battery compartment and transmit it to the controller.

9. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The first air outlet of the air handling unit is connected to the static pressure box through a first flexible connection.

10. The air-cooled containerized energy storage battery cabin energy-saving ventilation system according to claim 1, characterized in that: The second air outlet of the air handling unit is connected to the air supply pipe through a second flexible connection.

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