CN211045655U - Energy storage container temperature control system - Google Patents

Abstract

The utility model provides a temperature control system for an energy storage container. The temperature control system includes an air inlet part, an air outlet part, a control part and an air duct part inside the box body, and is composed of an external air inlet module and an air outlet of an air conditioner. As the air intake part, the external air intake module is composed of a first electric louver installed on the air intake channel and a number of air intake fans. The air module is composed of a second electric louver installed on the air outlet channel and several air outlet fans. The air outlet of each air conditioner is connected with the air inlet of the air duct part, and the air inlet of each air conditioner is connected with the air outlet of the air duct part. . The utility model greatly reduces the power consumption of the system while ensuring the operation and storage temperature of the battery, effectively improves the work efficiency of the energy storage system, and increases the income of the product; meanwhile, the utilization rate of the air conditioner is reduced, and the service life of the air conditioner is prolonged.

Description

Energy storage container temperature control system

technical field

The utility model belongs to the technical field of electric energy storage, in particular to a temperature control system for an energy storage container.

Background technique

In recent years, with the increasing demand for power plant frequency regulation, demand regulation, peak regulation and new wind and solar energy, the demand for power energy storage system products is increasing. Among them, lithium battery energy storage products are known for their high performance, long life, clean Advantages such as pollution become the first choice.

However, after a series of project verifications, although the efficiency of lithium battery energy storage products is higher than that of other energy storage systems, there is still a large energy loss. In addition to the inevitable losses such as internal resistance, the power consumption of system thermal management has a particularly significant impact on system efficiency. Since the battery will generate a lot of heat during the charging and discharging process, in order to ensure that the battery operates within the optimum temperature range, ensure the normal operation of the system, improve product reliability, and reduce battery life attenuation, the existing lithium battery energy storage container systems are basically equipped with There are high-power industrial air-conditioning systems (the power of an ordinary industrial air-conditioning system is generally tens of kilowatts), and the industrial air-conditioning system is controlled by the overall switch according to the battery temperature. This design leads to extremely high thermal management power consumption of the system, which seriously affects the product revenue.

Utility model content

In order to solve the above problems, one of the purposes of the present invention is to provide a temperature control system for an energy storage container. By adding an external air inlet module and an external air outlet module, when the external ambient temperature meets the requirements, the external air intake can be preferentially controlled. The battery cabinets and battery modules in the container cool down, reduce the utilization rate of air conditioners, effectively improve the work efficiency of the energy storage system, and then increase the revenue of the product.

A temperature control system for an energy storage container adopts the following technical solutions:

The temperature control system includes a box body and a control part matched with the box body. The box body is provided with a number of battery cabinets, a number of battery modules, and an air duct part, and the air duct part also includes an air inlet channel, a cooling air There are several air conditioners installed on the outer wall or inner space of the box body, wherein the air outlet of each air conditioner is connected with the air inlet of the air duct part, and the air inlet of each air conditioner is connected with the air duct part of the outlet. The air outlet is connected, and an external air intake module composed of a first electric louver and a plurality of air intake fans is installed on the air intake channel. There is an external air outlet module composed of a second electric louver and a number of air outlet fans, and the external air outlet module and the air inlet of the air conditioner together serve as the air outlet part; the external air inlet module and the external air outlet module are respectively connected with the control part. Electrical connections.

Preferably, the plurality of battery cabinets and battery modules are divided and evenly arranged according to regions, one or more air conditioners are correspondingly installed in each region, and correspondingly, one or more external air inlet modules and external air outlet modules are installed in each region. module. This design can target the cooling of the battery where the local temperature is too high, thereby reducing the energy consumption of the system.

Preferably, the plurality of battery cabinets are arranged symmetrically along the air outlet air duct, which facilitates centralized control and processing of the hot air after heat exchange.

The control part includes a control module, a detection module 1, and a detection module 2, wherein the detection module 1 is a plurality of temperature sensors evenly arranged on the outside of the box body, used to detect the external ambient temperature, and adjust the external ambient temperature. The signal is transmitted to the control module; the detection module 2 is a plurality of temperature sensors 2 evenly arranged on the battery module, used to detect the temperature of the battery module, and transmit the temperature signal of the battery module to the control module. This design can realize dual monitoring of the temperature inside and outside the container, so as to provide a basis for the control module to control when to cool down and which cooling method (air conditioning cooling method or external air cooling method).

The air inlet channel is the container air inlet channel, the container air inlet channel is a closed channel connected by the air inlet of the air channel to the air inlet of each cooling air channel, the air inlet of the container air inlet channel is the air outlet of the air conditioner and the external air inlet. The module is airtightly matched, and the air outlet of the container air inlet duct is airtightly matched with the air inlet of the cooling air duct.

The cooling air duct includes a battery cabinet air duct and a module air duct. The battery cabinet air duct is a closed channel connected from the air outlet of the container air inlet duct to the air inlet of each module air duct. The air inlet is airtightly matched with the air outlet of the air inlet duct of the container, and the air outlet of the air duct of the battery cabinet is matched with the air inlet of the air duct of the module; the air duct of the module is the passage connecting the air outlet of the air duct of the battery cabinet to the air outlet. The air inlet of the group air duct is matched with the air outlet of the battery cabinet air duct, and the air outlet of the module air duct is connected with the air outlet air duct.

Another object of the present invention is to provide an energy storage container, which adopts the temperature control system for the energy storage container.

The technical effect of the present utility model:

1. The present invention judges according to the external environmental temperature signal and the temperature signal of the battery module, controls the opening and closing status and the number of opening and closing of the air conditioner, electric louver, air inlet fan, and air outlet fan in the corresponding area, and controls the opening and closing number of the air conditioner, electric louver, air inlet fan, and air outlet fan in the corresponding area. If the air inlet temperature range meets the battery cooling requirements, the external air inlet module and the external air outlet module are preferentially used to cool the batteries inside the container. The fans used in the external air inlet module and the external air outlet module have a single operating power of only Dozens of watts, compared to tens of kilowatts of operating power of the air conditioner, the system energy consumption is greatly reduced; when the external ambient temperature cannot meet the air inlet temperature range required for battery cooling, turn off the external air inlet module and the external air outlet module, and the air conditioner The battery inside the container is cooled. Therefore, the present invention greatly reduces the utilization rate of the air conditioner, reduces the power consumption of the system, effectively improves the efficiency of the energy storage system, and improves the income of the product while ensuring the operation and storage temperature of the battery. The utilization rate prolongs the life of the air conditioner;

2. Compared with the existing single air-conditioning cooling container design, the present invention can effectively reduce the power consumption of the system by increasing the design of the external air inlet module and the external air outlet module and adjusting the system control strategy, the system adjustment range is small, and the appearance changes. small, low cost;

3. The detection module of the present invention adopts multiple redundancy, which can quickly identify the failure of the temperature sensor, improve the temperature detection accuracy, and reduce the influence of the failure of the temperature sensor on the system.

Description of drawings

Fig. 1 is an axonometric view of the energy storage container in the embodiment of the present invention.

Fig. 2 is an exploded axonometric view of the energy storage container in the embodiment of the present invention.

FIG. 3 is a block diagram of the temperature control system described in the embodiment of the present invention.

FIG. 4 is a flowchart of a control method in an embodiment of the present invention.

In the picture: 1-air conditioner, 2-rainproof cover, 3-first electric louver, 4-air intake fan, 5-container air intake duct, 6-battery cabinet air duct, 7-module air duct, 8-container Aisle, 9-second electric louver, 10-exhaust fan, 11-box.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, an energy storage container temperature control system adopts the following technical solutions:

The temperature control system includes a box body 11 and a control part matched with the box body 11. The box body 11 is provided with a number of battery cabinets, a number of battery modules, and an air duct part, and the air duct part also includes an air inlet channel. , cooling air duct and air outlet air duct, several air conditioners 1 are installed on the outer wall or inner space of the box 11, wherein the air outlet of each air conditioner 1 is connected with the air inlet of the air duct part, and the air inlet of each air conditioner 1 is connected. The air outlet is communicated with the air outlet of the air duct part, and an external air intake module composed of a first electric louver 3 and a plurality of air intake fans 4 is installed on the air intake channel, and the external air intake module and the air outlet of the air conditioner 1 together serve as In the air inlet part, an external air outlet module composed of a second electric louver 9 and a plurality of air outlet fans 10 is installed on the air outlet channel, and the external air outlet module and the air inlet of the air conditioner 1 together serve as the air outlet part; the The external air inlet module and the external air outlet module are respectively electrically connected with the control part.

The air inlet part is composed of two parts, an air conditioner 1 and an external air inlet module, and further description is made. Among them, the air conditioner 1 adopts the corresponding industrial air conditioner 1 according to the heating power of the battery and the cooling air volume required by each battery cabinet. The external air intake module is composed of a rain cover 2, a first electric louver 3 and an air intake fan 4. The rain cover 2 is located outside the first electric louver 3 and is connected to the outer wall of the container side panel by bolts. The inner side of the first electric louver 3 is installed with a dust filter and a dehumidification layer according to the working conditions. The first electric louver 3 and the air intake fan 4 are controlled by the control module to open and close synchronously to ensure that the first electric louver 3 is opened when the air intake fan 4 is working. , the external air intake is sufficient; the first electric louver 3 is closed when the air conditioner 1 is working to prevent the air-conditioning wind from leaking out; when the product is on fire and the fire-fighting gas is released, the first electric louver 3 and the intake fan 4 are closed to prevent gas leakage.

The air outlet part is composed of two parts, an air conditioner 1 and an external air outlet module, and further description is made. The external air outlet module is composed of a second electric louver 9 and an air outlet fan 10. The inner side of the second electric louver 9 is installed with a dustproof net and a dehumidification layer according to the working conditions. The second electric louver 9 and the air outlet fan 10 are controlled by the control module. At the same time, the opening and closing are controlled to ensure that the air outlet fan 10 and the second electric louver 9 are both turned on when the air cooling system is used to quickly discharge the heat from the internal container aisle 8; when the product is on fire, the second electric louver 9 and the air outlet are released. The fan 10 is closed to prevent gas leakage. The air inlet of the air conditioner 1 is used for the recovery of heat in the container aisle 8 when the air conditioner is cooled.

Further instructions are given to the air duct section. The air duct is composed of a container air duct 5 , a battery cabinet air duct 6 , a module air duct 7 and a container aisle 8 . The container air inlet duct 5 is a closed passage that is connected to the air inlet of each battery cabinet air duct 6 by the air inlet of the air duct part. The air inlet of the container air inlet duct 5 is tightly matched with the air outlet of the air conditioner 1 and the external air inlet module. The air outlet of the air inlet duct 5 of the container is tightly matched with the air inlet of the air duct 6 of the battery cabinet, so as to introduce the air volume entered by the air inlet module into the battery cabinet. The battery cabinet air duct 6 is a closed channel connected by the air outlet of the container air inlet duct 5 to the air inlet of each module air duct 7. The air inlet of the battery cabinet air duct 6 is sealed with the air outlet of the container air inlet duct 5. In cooperation, the air outlet of the battery cabinet air duct 6 cooperates with the air inlet of the module air duct 7 to introduce the air volume entering the container air duct 5 into the module air duct 7; The structure composed of batteries, etc. is the channel connecting the air outlet of the battery cabinet air duct 6 to the container aisle 8. The air inlet is matched with the air outlet of the battery cabinet air duct 6, and the air outlet is connected to the container aisle 8 to connect the battery cabinet air duct. 6 The incoming air volume is introduced, the battery heat is taken away, and it is led out to the container aisle 8, which reduces the battery operating temperature, optimizes the working conditions, improves the battery performance, and reduces the battery decay rate, thereby prolonging the life. The container aisle 8 is a channel composed of battery cabinets on both sides and the upper and lower shells of the container, and the air outlet of the module is led to the air outlet part through the container aisle 8 .

Further instructions are given to the control section. The control part includes a control module, a detection module 1, and a detection module 2, wherein the detection module 1 is a plurality of temperature sensors evenly arranged on the outside of the box body 11, which are used to detect the external environment temperature, and adjust the external environment. The temperature signal is transmitted to the control module; the detection module 2 is a plurality of temperature sensors 2 evenly arranged on the battery module, used to detect the temperature of the battery module, and transmit the temperature signal of the battery module to the control module.

The plurality of battery cabinets and battery modules are divided and evenly arranged according to regions. One or more air conditioners 1 are installed in each region. Correspondingly, each region is installed with one or more external air inlet modules and external air outlet modules.

The plurality of battery cabinets and battery modules are symmetrically arranged along the air outlet duct.

A temperature control method for an energy storage container is shown in Figures 3 and 4, and the specific technical solutions are as follows:

The temperature control system of the energy storage container is adopted, and the specific control method is as follows:

(1) A pair of external ambient temperature is detected by the detection module, and the external ambient temperature signal is transmitted to the control module;

(2) Detect the temperature of the battery module through the second detection module, and transmit the temperature signal of the battery module to the control module;

(3) The control module judges according to the external ambient temperature signal and the temperature signal of the battery module transmitted by the detection module 1 and the detection module 2, and determines the opening and closing status and the opening and closing status of the air conditioner, electric louver, air inlet fan and air outlet fan in the corresponding area. The number of closed boxes is controlled, and if the external ambient temperature meets the air inlet temperature range required for battery cooling, the external air inlet module and external air outlet module are preferentially used to cool the batteries inside the container; if the external ambient temperature cannot meet the battery cooling requirements In the case of the inlet air temperature range, close the external air inlet module and the external air outlet module, and let the air conditioner cool the battery inside the container;

(4) If the fire alarm system is activated, all air conditioners, electric shutters and fans of the container will be turned off.

In the step 1, the detection module 1 detects a plurality of external environment temperature values, removes abnormal values according to the difference between the temperatures and gives an alarm, and at the same time averages the normal values and transmits them to the control module.

In the step 2, first set the thermal management cooling opening temperature, and then according to the number of battery cabinets in which the highest battery temperature in each independent control management area detected by the detection module 2 exceeds the set thermal management cooling opening temperature, and the number of battery cabinets that account for the total battery cabinet in this area. The ratio of the number to determine whether the air conditioner or the external air inlet module and the external air outlet module need to be turned on in this area, and the number of fans that need to be turned on for the external air inlet module and the external air outlet module.

An energy storage container adopts the temperature control system of the energy storage container.

Claims (7)

1. A temperature control system for an energy storage container, comprising a box body (11) and a control part matched with the box body (11), wherein the box body (11) is provided with a number of battery cabinets, a number of battery modules, a wind The air duct part includes an air inlet channel, a cooling air duct and an air outlet air duct. Several air conditioners (1) are installed on the outer wall or the inner space of the box body (11). The air outlet is communicated with the air inlet of the air duct part, and the air inlet of each air conditioner (1) is communicated with the air outlet of the air duct part. An external air intake module composed of an air intake fan (4), the external air intake module and the air outlet of the air conditioner (1) together serve as the air intake part, and a second electric louver (9) and a plurality of air outlets are installed on the air outlet channel. An external air outlet module composed of an air outlet fan (10), the external air outlet module and the air inlet of the air conditioner (1) together serve as an air outlet part; the external air inlet module and the external air outlet module are respectively electrically connected to the control part . 2. The temperature control system for an energy storage container according to claim 1, wherein the plurality of battery cabinets and battery modules are divided and evenly arranged according to regions, and one or more air conditioners ( 1), correspondingly, install one or more external air inlet modules and external air outlet modules in each area. 3 . The temperature control system for an energy storage container according to claim 1 or 2 , wherein the plurality of battery cabinets and battery modules are symmetrically arranged along the air outlet duct. 4 . 4 . The temperature control system for an energy storage container according to claim 1 , wherein the control part comprises a control module, a first detection module, and a second detection module, wherein the first detection module is evenly arranged on the box body. 5 . (11) The first multiple temperature sensors on the outside are used to detect the external ambient temperature and transmit the external ambient temperature signal to the control module; the second detection module is a plurality of temperature sensors evenly arranged on the battery module. It is used to detect the temperature of the battery module and transmit the temperature signal of the battery module to the control module. 5. The temperature control system for an energy storage container according to claim 1, wherein the air inlet channel is a container air inlet channel (5), and the container air inlet channel (5) is a The air outlet is connected to the airtight passage of the air inlet of each cooling air duct, the air inlet of the container air inlet duct (5) is tightly matched with the air outlet of the air conditioner (1) and the external air inlet module, and the air outlet of the container air inlet duct (5) is connected to the cooling The air duct air inlet is airtightly matched. 6. The temperature control system for an energy storage container according to claim 1 or 5, wherein the cooling air duct comprises a battery cabinet air duct (6) and a module air duct (7), and the battery cabinet The air duct (6) is a closed channel connected from the air outlet of the container air inlet duct (5) to the air inlet of each module air duct (7). The air inlet of the battery cabinet air duct (6) is connected to the container air inlet duct ( The air outlet of 5) is airtightly matched, and the air outlet of the battery cabinet air duct (6) is matched with the air inlet of the module air duct (7); the module air duct (7) is the battery cabinet air duct (6) The air outlet is connected to the outlet. For the passage of the air duct, the air inlet of the module air duct (7) is matched with the air outlet of the battery cabinet air duct (6), and the air outlet of the module air duct (7) is connected with the air outlet air duct. 7. An energy storage container, characterized in that: the temperature control system for an energy storage container according to any one of claims 1-6 is adopted.

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