JP3241999U - Energy storage type container equipment - Google Patents

Abstract

The present invention provides an energy storage container device that overcomes the defect that the storage space of the energy storage container is too small. Kind Code: A1 An energy storage type container device includes a housing and a load body 20 installed in the housing, suitable for storing cells, and having a heat exchanger installed thereon, the heat exchanger having flame retardant properties. at least one loading body in which the working material for heat exchange flows through the heat exchanger and the heat exchanger is provided with a relief valve; 50 and a control module 70 communicatively connected to the relief valve and suitable for controlling the opening and closing of the relief valve. The working material for heat exchange in the temperature control system is also for fire extinguishing, so there is no need to additionally install a fire extinguishing system, and the investment for extinguishing can be saved. [Selection drawing] Fig. 2

Description

TECHNICAL FIELD The present invention relates to the field of energy storage technology, specifically to an energy storage container device.

Renewable energy power plants generally combine and set a certain scale of energy storage devices so as to avoid the randomness and variability of wind power and solar power from affecting the stable operation of the power grid. Therefore, the electrochemical energy storage placed in the container has the advantages of high energy density, high efficiency and low construction cost, so it becomes the first choice for energy storage combination set. However, after the energy storage container gradually develops in the direction of large scale and high cell density, it will cause the following two problems.

First, electrochemical energy storage cells are more sensitive to temperature and present a serious potential fire hazard when temperatures are relatively high. The dense stacking of cells in the container further increases the local heat exchange pressure, thus affecting the temperature control inside the container. Therefore, it is necessary to install a temperature regulation system inside the container so as to control the temperature inside the container.

Secondly, since the cells are densely piled up, if a misfire accident occurs in a part of the cells, the surrounding cells are easily ignited and the fire spreads easily. Therefore, it is necessary to install a fire extinguishing system in the container so as to quickly and accurately complete the extinguishing at the initial stage of misfire.

To the above problems, the current mainstream solution is to install a temperature control device and a gas fire extinguishing device in the container respectively. The temperature control device mainly uses a conventional wall-mounted air conditioner or an integrated air conditioner, and blows air to one side inside the container by a fan coil. The gas fire extinguishing system mainly uses a fire extinguishing agent represented by bromochlorodifluoromethane, bromotrifluoromethane or 1,2-dibromotetrafluoroethane, and fills the entire container with the extinguishing agent in the event of a fire. The fire is extinguished by The temperature control device and the fire extinguishing device must be installed independently, and the heat exchange system and fire extinguishing system must be placed in the container at the same time, occupying the effective storage space of the energy storage container, and the energy storage of the energy storage container. reduce efficiency.

Therefore, the problem to be solved by the present invention is to overcome the shortcomings of the prior art in which the temperature control device and the fire extinguishing device in the energy storage container are installed independently, so that the storage space of the energy storage container is too small. It is therefore an object of the present invention to provide an energy storage type container device.

An energy storage type container device according to the present invention,
a housing;
A loading body installed in the housing, suitable for storing cells, on which a heat exchanger is installed, wherein a flame-retardant heat exchange working material flows through the heat exchanger, and the heat is at least one load on which the exchanger is fitted with a relief valve;
a cooler in communication with the heat exchanger and suitable for cooling the heat exchange working material;
a control module communicatively connected to the relief valve and suitable for controlling opening and closing of the relief valve.

Optionally, said working substance for heat exchange is carbon dioxide.

Optionally, the heat exchanger comprises a supply pipe and a return pipe, the outlet of the cooler communicates with the supply pipe, the inlet of the cooler communicates with the return pipe, and the supply pipe and the return pipe are connected. communicate through at least two intermediate connecting tubes installed in parallel.

optionally, fins are connected to the surface of at least one of said intermediate connecting tubes;
and/or the intermediate connecting pipe is a tube sheet, and micro-channels are installed in the tube sheet for communicating the supply pipe and the return pipe.

Optionally, said energy storage container device further comprises a storage tank in communication with said heat exchanger and suitable for replenishing working material for heat exchange in said heat exchanger.

As an option, the heat exchangers of different loads are connected in parallel and both communicate with the cooler, and between the cooler and the heat exchangers of different loads none of the control A solenoid valve is provided in communication with the module.

optionally, a temperature sensor is located within the housing and is communicatively connected to the control module;
and/or a gas detector communicatively connected to the control module is located within the housing.

Optionally, the energy storage container device further comprises a cell placed on the load and communicatively connected to the control module, the control module adapted to control the cell to store electrical energy.

Optionally, a partition plate is installed in the housing, the partition plate being suitable for partitioning the stack and the cooler and/or the stack and the control module.

As an option, a fan is installed in the load.

The present invention has the following advantages.

First, in the energy storage container device according to the present invention, a load body for storing cells is installed in the housing, a heat exchanger is installed in the load body, the heat exchanger communicates with a cooler, and a heat exchanger is installed. A combustible heat exchange working material flows through it, and a relief valve is installed in the heat exchanger, so that the heat exchange working material can not only lower the temperature of the cell by heat exchange during the flow process, When the cell suddenly misfires, the relief valve of the heat exchanger opens to discharge the heat exchange working material, and the flame-retardant heat exchange working material separates the air to complete the fire extinguishing. can also be, the working material for heat exchange in the temperature control system is also for fire extinguishing, no need to install additional fire extinguishing system, not only can save the investment for fire extinguishing, It can also reduce the volume occupied by the temperature control system and the fire extinguishing system, which contributes to efficient utilization of the internal space of the energy storage container device and increases the energy storage capacity per unit volume inside the enclosure. .

Second, in the energy storage container system of the present invention, carbon dioxide is selected as the working material for heat exchange, converting waste emissions in conventional energy systems, such as carbon dioxide, into a usable resource. It can support the development of low-carbon and renewable energy, carbon dioxide is naturally present in nature, has almost zero ozone depletion potential and global warming potential, and emissions and leakage during use will not affect the environment. and the cooling capacity per unit volume of carbon dioxide is high, and if installed in the energy storage type container device, the volume required for the temperature control system can be reduced.

Thirdly, in the energy storage type container device according to the present invention, the heat exchanger comprises a supply pipe and a return pipe, the supply pipe and the return pipe communicate through at least two intermediate connection pipes, and may be installed in parallel to improve the heat exchange efficiency of the heat exchanger.

Fourthly, in the energy storage container device according to the present invention, the fins connected to the surface of the intermediate connecting pipe can increase the heat exchange area to improve the heat exchange efficiency of the heat exchanger.

Fifth, in the energy storage container device according to the present invention, a plurality of micro-channels may be installed in the tube sheet to further improve the heat exchange performance of the heat exchanger.

Sixth, in the energy storage type container device according to the present invention, the storage tank can be replenished with the heat exchange working material in the piping, and the system is immediately replenished after the heat exchange working material is consumed. to restore the system to normal operation quickly and ensure the stable operation of the system.

Seventh, in the energy storage type container apparatus according to the present invention, the heat exchanger for each load is independently installed with a solenoid valve, and the temperature control system for each load can be independently managed and centralized. Compared to the cooling method, the target high temperature cell area can be directionally adjusted by releasing supercritical carbon dioxide, avoiding potential safety hazards due to local high temperatures, and mutual interference between payloads To avoid.

Eighth, in the energy storage container device according to the present invention, a partition plate is installed in the housing, and the partition plate can separate the load body storing the cells from other control devices and cooling devices, and the cells are Ensure that other equipment is not damaged in the event of a misfire.

Ninth, in the energy storage type container device according to the present invention, the fan is installed on the back plate of the load body, and can blow air from the back plate side to the load body, and when used in combination with a heat exchanger, The temperature lowering effect of the device can be further improved.

In order to describe the specific embodiments of the present invention or the technical solutions of the prior art more clearly, the following briefly describes the drawings required for the description of the specific embodiments or the prior art. The drawings described in are examples of embodiments of the present invention, and those skilled in the art can further obtain other drawings based on these drawings without creative efforts.
1 is a structural schematic diagram of an energy storage container device according to an embodiment of the present invention; FIG. FIG. 2 is a plan view of the energy storage container device in FIG. 1; FIG. 1 is a structural schematic diagram 1 of a loading body of an energy storage container device according to an embodiment of the present invention; FIG. 2 is a structural schematic view 2 of the loading body of the energy storage container device according to an embodiment of the present invention; FIG. 1 is a structural schematic diagram of a heat exchanger of an energy storage container device according to an embodiment of the present invention; 1 is a front view of a heat exchanger of an energy storage container device according to an embodiment of the present invention; FIG. FIG. 7 is a cross-sectional view along AA in FIG. 6; 1 is a system schematic diagram of an energy storage container device according to an embodiment of the present invention; FIG.

The following clearly and completely describes the technical solution of the present invention with reference to the drawings, and of course, the described embodiments are part of the embodiments of the present invention, not all of the embodiments.

Any other embodiments obtained by those skilled in the art based on the embodiments of the present invention without the need for inventive effort shall fall within the protection scope of the present invention.

In describing the invention, what is to be described is the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc. Any orientation or positional relationship shown is that shown in the drawings, and is merely for the purpose of facilitating and simplifying the description of the invention, and any device or element indicated must have a specific orientation. , is not to be construed as limiting the invention, by designating or implying that it must be constructed and operated in any particular orientation. Also, the terms "first", "second" and "third" are for descriptive purposes only and should not be understood to indicate or imply any relative importance.

In the description of the present invention, the terms "attachment", "coupling", and "connection" should be broadly understood, unless otherwise explicitly defined and limited, and include fixed connection, removable connection, integral connection, mechanical connection, electrical connection, direct connection, indirect connection through an intermediate element, or internal communication between two elements. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

Also, technical features related to different embodiments of the present invention described below may be combined with each other unless they conflict with each other.

Embodiment Referring to FIGS. 1 to 8, an energy storage container device according to an embodiment of the present invention, comprising:
a housing 10;
A loading body 20 installed in the housing 10, suitable for storing the cells 30, and on which the heat exchanger 40 is installed, wherein a flame-retardant heat exchange working material flows through the heat exchanger 40. at least one load 20 in which a relief valve 44 is installed in the flow and heat exchanger 40;
a cooler 50 that communicates with the heat exchanger 40 and is suitable for cooling the working material for heat exchange;
a control module 70 communicatively connected to the relief valve 44 and suitable for controlling the opening and closing of the relief valve 44 ;

In this embodiment, a load body 20 for storing cells 30 is installed in the housing 10, a heat exchanger 40 is installed in the load body 20, the heat exchanger 40 communicates with a cooler 50, and is flame retardant. The heat exchange working material flows through it, and a relief valve 44 is installed in the heat exchanger 40, so that the heat exchange working material can not only lower the temperature of the cell 30 by heat exchange during the flow process, When the cell 30 suddenly misfires, the relief valve 44 of the heat exchanger 40 opens to discharge the heat exchange working material, and the flame-retardant heat exchange working material separates the air. Fire extinguishing can also be completed, the working material for heat exchange in the temperature adjustment system is also for fire extinguishing, no need to install additional fire extinguishing system, can only save investment for extinguishing In addition, the volume occupied by the temperature control system and the fire extinguishing system can be reduced, and the internal space of the energy storage container device can be efficiently used to increase the energy storage capacity per unit volume inside the housing 10. contribute to

In this embodiment, _the material of the working substance for heat exchange is not specifically limited as long as it is flowable and flame- _retardant . Alternatively, in another embodiment, the working substance for heat exchange is carbon dioxide.

In this example, carbon dioxide is selected as the working material for heat exchange, which can convert waste emissions in conventional energy systems, such as carbon dioxide, into usable resources, and provide low-carbon and renewable energy. Support development, carbon dioxide naturally exists in nature, ozone depletion potential and global warming potential are almost zero, emissions and leakage in the process of use do not affect the environment, and the unit volume of carbon dioxide It has a high cooling capacity per unit and can be installed in an energy storage container device to reduce the volume required for the temperature control system.

In this embodiment, the cooler 50 ensures that the pressure of the carbon dioxide working material to be supplied is in the range of 8 MPa to 12 MPa, the temperature is in the range of 2° C. to 7° C., and the working material is in a supercritical state. ensure as in

As a preferred embodiment, the heat exchanger 40 comprises a supply pipe 41 and a return pipe 42, the outlet of the cooler 50 communicates with the supply pipe 41, the inlet of the cooler 50 communicates with the return pipe 42, and the supply pipe 41 and the return pipe 42 communicate through at least two intermediate connecting pipes installed in parallel.

In this embodiment, the heat exchanger 40 includes a supply pipe 41 and a return pipe 42. The supply pipe 41 and the return pipe 42 communicate with each other via at least two intermediate connection pipes, and a plurality of intermediate connection pipes are installed in parallel. may be used to improve the heat exchange efficiency of the heat exchanger 40 .

Based on the above embodiments, in one preferred embodiment, refer to the fins 431 connected to the surface of at least one intermediate connecting tube, specifically refer to FIGS. 5 and 6, the fins 431 may be installed between two adjacent intermediate connecting tubes, installed at an angle, and connected to each other end-to-end.

In this embodiment, the fins 431 connected to the surface of the intermediate connecting pipe can increase the heat exchange area and improve the heat exchange efficiency of the heat exchanger 40 .

In this embodiment, the structure of the intermediate connection pipe is not specifically limited, and it is sufficient that the structure allows the fluid to flow. , FIG. 7, the intermediate connection pipe is a tube plate 43, in which microchannels 432 are installed for communicating the supply pipe 41 and the return pipe 42, and the microchannels 432 are connected as needed. Diameter and number can be adjusted.

In this embodiment, a plurality of micro-channels 432 may be installed in the tube sheet 43 to further improve the heat exchange performance of the heat exchanger 40 .

As a preferred embodiment, the energy storage container device further comprises a storage tank 60 in communication with the heat exchanger 40 and suitable for replenishing the working material for heat exchange in the heat exchanger 40 . Referring to FIG. 8, when the pressure of carbon dioxide in the system is lower than 8 MPa to 12 MPa, the on-off valve 61 opens to allow the system to be replenished with carbon dioxide in the storage tank 60 .

In this embodiment, the storage tank 60 can replenish the heat exchange working material in the pipe, and immediately replenish the system after the heat exchange working material is consumed, so that the system can quickly return to normal operation. recover and ensure that the system can operate stably.

In a preferred embodiment, the heat exchangers 40 of different loads 20 are connected in parallel and are all in communication with the chiller 50, and between the chiller 50 and the heat exchangers 40 of different loads 20 any A solenoid valve 51 is also provided which is communicatively connected to the control module 70 . Specifically, referring to FIGS. 1, 2 and 8, 10 stacks 20 are arranged in the housing 10, and the 10 stacks 20 are divided into 2 rows, 5 in each row. Yes, the main supply pipe and the main return pipe are each divided into two branches, respectively connected to the cooler 50, each branch is connected to the heat exchangers 40 of the five load bodies 20, and has the function of supplying and refluxing carbon dioxide. , the heat exchangers 40 of each loading body 20 are arranged in parallel, and each heat exchanger 40 is provided with an electromagnetic valve 51 . The solenoid valve 51 receives the flow control signal of the control module 70 and can be adjusted from fully open to fully closed, thereby changing the supply of carbon dioxide, and the carbon dioxide working material is transferred to the heat exchange of the load body 20. After flowing through vessel 40, it returns to chiller 50 via the main return line.

In this embodiment, the electromagnetic valve 51 is independently installed in each heat exchanger 40 of each loading body 20, and the temperature control system in each loading body 20 can be managed independently. By releasing critical carbon dioxide, the target hot cell area can be directionally adjusted, avoiding potential safety hazards due to localized high temperatures and also avoiding mutual interference between payloads 20 .

As a preferred embodiment, a temperature sensor is installed within the housing 10 and is communicatively connected to the control module 70 . Specifically, the temperature sensor is a thermistor located in relief valve 44 .

In this embodiment, the temperature sensor can sense the temperature of the cells 30 in the load 20, and when the temperature of the cells 30 is abnormal, it will send a signal to the control module 70 to open the relief valve 44.

In a preferred embodiment, housing 10 contains a gas detector communicatively connected to control module 70 . Specifically, an infrared gas detector is placed in the relief valve 44 .

In this embodiment, the gas detector can continuously monitor the concentration of carbon dioxide and the concentration of oxygen in the corresponding load 20 after the relief valve 44 is opened in the event of a fire. provides a reference basis for the control of the open state of the valve by the control module 70 of .

In this embodiment, the energy storage container device further comprises a cell 30 placed on the load 20 and communicatively connected to the control module 70, the control module 70 controlling the cell 30 to store electrical energy. Suitable.

In this embodiment, the structure of the load body 20 is not specifically limited. As an embodiment, referring to FIGS. The cells 30 are placed on the support plate 22 . Specifically, the stack 20 includes 10 layers of support plates 22 , and 12 cells 30 are arranged on each support plate 22 .

In this embodiment, the cell 30 may be a lithium iron phosphate cell, a solid state lithium ion cell, or even a sodium ion cell, and is not specifically limited herein.

As a preferred embodiment, referring to FIGS. 1 and 2 , a partition plate 11 is installed inside the housing 10 , and the partition plate 11 can separate the load 20 and the cooler 50 . Similarly, the partition plate 11 can separate the stack 20 and the control module 70 . As long as the partition plate 11 has fireproof performance, in one embodiment, the partition plate 11 may be a cement plate. In another embodiment, the partition plate may be a metal plate, specifically a steel plate. may be

In this embodiment, a partition plate 11 is installed in the housing 10, and the partition plate 11 can separate the load body 20 that stores the cell 30 from other control devices and cooling devices. Ensure that other equipment is not damaged.

Based on the above embodiments, in one preferred embodiment, a fan 231 is installed on the load 20 . Specifically, referring to FIG. 3 , the back plate 23 is fixed on one side of the stacking body 20 , and the fan 231 is installed on the back plate 23 to blow air from the back plate 23 side to the stacking body 20 for heat exchange. When used in combination with the vessel 40, the temperature lowering effect of the device can be further improved.

Based on the above specific embodiments, the operation process of the energy storage container device according to this embodiment is as follows.

1. Operation Situation During Misfire A relief valve 44 is arranged in the return pipe 42 and the supply pipe 41 of the heat exchanger 40, and when the relief valve 44 detects that the temperature of the cell 30 reaches the misfire temperature, the corresponding relief valve 44 is The misfire cell 30 is extinguished and cooled by releasing supercritical carbon dioxide. After completing the extinguishing and cooling, the relief valve 44 continuously monitors the concentration of carbon dioxide and the concentration of oxygen in the corresponding area of the load 20, and intermittently releases carbon dioxide to reduce the concentration of air in the area. Ensure that the oxygen concentration is less than 12% and the carbon dioxide concentration is greater than 35% to ensure that the area does not reignite.

2. Normal Operating Situation Two sets of fans 231 are installed on the back plate 23 of the load 20 so that the air in the enclosure 10 is cooled by the heat exchanger 40 and then provides cooling capacity to the cells 30 . can. The relief valve 44 monitors the temperature of the cell 30 in the corresponding area in real time, and the control module 70 controls the speed of the fan 231 installed on the back plate 23 based on the temperature signal, so that the temperature of the cell 30 is controlled based on the temperature of the cell 30. It realizes dynamically adjusting the cooling effect.

Obviously, the above examples are merely illustrative examples and are not intended to limit the embodiments. Still other different types of changes or variations can be made by those skilled in the art based on the above description. It is not possible, nor necessary, to exhaustively illustrate all embodiments here. And the obvious changes or variations that can be conceived are still within the creative protection scope of the present invention.

10 Housing 11 Partition Plate 20 Loading Body 21 Holder 22 Support Plate 23 Back Plate 231 Fan 30 Cell 40 Heat Exchanger 41 Supply Pipe 42 Return Pipe 43 Tube Sheet 431 Fins 432 Micro Channel 44 Relief Valve 50 Cooler 51 Solenoid Valve 60 Storage Tank 61 On-off valve 70 Control module

Claims (10)

An energy storage container device,
a housing (10);
A load (20) installed in said housing (10) suitable for storing a cell (30) and having a heat exchanger (40) installed thereon, said load body (20) for heat exchange having flame retardant properties. at least one load (20) through which a working substance flows through said heat exchanger (40), said heat exchanger (40) being provided with a relief valve (44);
a cooler (50) in communication with the heat exchanger (40) and suitable for cooling the heat exchange working material;
a control module (70) communicatively connected to said relief valve (44) and suitable for controlling the opening and closing of said relief valve (44). 2. An energy storage type container apparatus according to claim 1, wherein said working material for heat exchange is carbon dioxide. The heat exchanger (40) comprises a supply pipe (41) and a return pipe (42), the outlet of the cooler (50) communicates with the supply pipe (41), and the inlet of the cooler (50) is 2. The method according to claim 1, characterized in that it communicates with said return pipe (42), said supply pipe (41) and said return pipe (42) communicating via at least two intermediate connecting pipes installed in parallel. An energy storage container device as described. fins (431) are connected to the surface of at least one of said intermediate connecting tubes;
and/or said intermediate connecting pipe is a tube sheet (43), and said tube sheet (43) is provided with micro-channels (432) communicating said supply pipe (41) and said return pipe (42). The energy storage type container device according to claim 3, characterized in that The energy storage container device further comprises a storage tank (60) communicating with the heat exchanger (40) and suitable for replenishing the working material for heat exchange in the heat exchanger (40). The energy storage type container apparatus according to claim 1. The heat exchangers (40) of different load bodies (20) are connected in parallel and all communicate with the cooler (50), and the heat exchangers (40) of the load bodies (20) different from the cooler (50) are connected in parallel. The energy storage type container system according to claim 1, characterized in that a solenoid valve (51) is installed between the heat exchanger (40) and both of which are communicatively connected to the control module (70). A temperature sensor communicatively connected to the control module (70) is installed in the housing (10),
and/or a gas detector is installed in the housing (10) and is communicatively connected to the control module (70). The energy storage container device further comprises a cell (30) placed on the load (20) and communicatively connected to the control module (70), wherein the control module (70) controls the cell (30). The energy storage container device according to claim 1, which is suitable for controlling and storing electrical energy. A partition plate (11) is installed in the housing (10), and the partition plate (11) separates the load body (20) and the cooler (50), and/or the load body (20) and the Energy storage container device according to any one of the preceding claims, characterized in that it is suitable for partitioning a control module (70). The energy storage container system according to any one of claims 1 to 8, characterized in that a fan (231) is installed on the load (20).

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