WO2019001062A1

WO2019001062A1 - Battery energy storage container

Info

Publication number: WO2019001062A1
Application number: PCT/CN2018/081623
Authority: WO
Inventors: 熊磊; 黄煜
Original assignee: 深圳市拓邦锂电池有限公司
Priority date: 2017-06-27
Filing date: 2018-04-02
Publication date: 2019-01-03
Also published as: CN206976530U

Abstract

A battery energy storage container, comprising a container body. The container body comprises an electrical chamber and a battery chamber adjacent to the electrical chamber. The battery chamber is provided with a cooling system configured to lower a temperature of battery cells in the battery chamber, and a heat dissipation system in communication with the cooling system. The cooling system comprises a cooling host machine located at one end of the battery chamber, and a step-type air duct provided on an upper portion of the battery chamber and connected to the cooling host machine to guide an airflow. The height of the step-type air duct decreases in steps along an airflow direction. Multiple air outlets are provided on two sides of the step-type air duct. The air outlets are in communication with the heat dissipation system to dissipate heat in the battery chamber. By means of the step-type air duct having the height decreased in steps, the present invention enables cool air to uniformly flow into the heat dissipation system and enter the battery chamber, thus realizing uniform heat dissipation for all battery cells in the chamber.

Description

Battery energy storage container

Technical field

The utility model relates to an energy storage container, and more particularly to a battery energy storage container.

Background technique

The container energy storage system is an electric energy storage and transfer device, which can be configured at the power generation end, the power transmission and distribution end, and the user end, and is used for expanding the power supply system capacity, helping to improve the power quality of the power grid, and improving the reliability of power supply to the load. The energy storage container is composed of two parts: an electric warehouse and a battery compartment. The power distribution cabinet and the inverter are placed in the electric warehouse. The heat resistance of these equipments is good, so the electric warehouse does not perform forced cooling; the battery rack is arranged on both sides of the walkway of the battery compartment, the battery compartment is placed horizontally in the battery rack, and the battery compartment is placed in the sealed battery compartment. Due to the dense arrangement of the cells, the temperature rise of the cell is high, and excessive temperature rise will seriously affect the performance and life of the cell. Therefore, a suitable cooling scheme must be used to control the temperature rise of the battery.

When the energy storage system is running, the heat radiated by the battery cells is collected in the sealed battery compartment, and a proper cooling scheme must be adopted to control the temperature rise of the battery. At present, there are many cases for the heat dissipation of the battery compartment: Case 1, the air conditioner is arranged at the end or the top of the aisle to supply air to the aisle. The solution is to reduce the temperature of the cell by lowering the temperature of the whole body, the temperature of the cooling is too slow, and the heat dissipation effect of the cell near the wall is poor; in the second case, the air conditioner is arranged diagonally diagonally on both sides of the battery compartment to supply air to the aisle. Due to the limited size of the air outlet, a few battery boxes are excessively cooled, most of the battery boxes can not be fully cooled, and the heat dissipation effect of the battery near the wall is also poor. In the third case, the air conditioner is arranged at one end of the walkway, and the top air supply is used. The wind sends back the air, and the air duct at the top of the air conditioner delivers cold air to the top of the battery rack. Although the scheme guides the cold air to the part that needs to be cooled, except for the top battery box, the cooling effect of the other battery cases is poor, and the use of the equal-section air duct cannot uniformly distribute the cold air flow on the top of each battery rack. In summary, the existing solutions cannot efficiently and uniformly reduce the battery temperature.

technical problem

Technical solution

The technical problem to be solved by the present invention is to provide a battery energy storage container capable of effectively reducing the battery temperature.

The technical solution adopted by the utility model to solve the technical problem is to construct a battery energy storage container, which comprises a box body, the box body comprises an electric warehouse and a battery compartment adjacent to the electric warehouse; the battery compartment Provided therein is a refrigeration system for reducing the temperature of the battery cells in the battery compartment, and a heat dissipation system in communication with the refrigeration system, the refrigeration system including a refrigeration host at one end of the battery compartment, and a top of the battery compartment And the stepped air duct for guiding air is connected to the refrigerating main engine; the height of the stepped air duct is gradually decreased along the airflow direction; and the plurality of air outlets are provided on both sides of the stepped air duct, and the outflow A tuyere is in communication with the heat dissipation system to dissipate heat from the battery compartment.

Preferably, the battery compartment includes a walkway disposed between the battery compartment to divide the battery compartment into front and rear sides, a battery rack disposed on both sides of the walkway, and a battery case placed on the battery rack The cooling main unit is located at one end of the walkway, and the stepped air duct is disposed at two sides of the walkway and is installed above the battery rack.

Preferably, the stepped air duct includes a first section air duct and a second section air duct respectively disposed on the two side battery racks, and a communication passage connecting the first section air duct and the second section air duct; The communication channel is located above one end of the walkway and communicates with the refrigeration host; the first section of the duct and the second section of duct are stepped, and the first section of the duct and the first section The step distribution on the second duct is gradually reduced in the airflow direction; the air outlet is distributed outside the first duct and the second duct.

Preferably, the heat dissipation system includes a wind wall disposed between each of the battery racks and a wall of the battery compartment, and at least one heat dissipation passage disposed in the battery box in communication with the wind wall; The wind wall is in communication with the air outlet, and the edge of the unsealed side of the wind wall is seamlessly welded to the battery rack.

Preferably, the battery box comprises cells arranged side by side, and the heat dissipation channels are arranged between the two cells arranged side by side.

Preferably, the heat dissipation channel connects the wind wall and the walkway.

Preferably, the refrigeration host is an industrial air conditioner.

Preferably, the industrial air conditioner top air supply port is in communication with the communication passage to guide the cold air flow along the first section air duct and the second section air duct.

Preferably, the maximum cooling capacity of the refrigerating mainframe is consistent with the maximum heating power of all the cells in the battery compartment.

Preferably, the front case and the rear case of the battery case are respectively provided with heat dissipation holes for heat dissipation of the battery core.

Beneficial effect

The battery energy storage container of the present invention has the following beneficial effects: the utility model provides a cooling system with a stepped air duct at the top of the battery compartment and a heat dissipation system connected with a plurality of air outlets of the air duct. The utility model can improve the cooling efficiency of the battery energy storage container. Furthermore, the utility model reduces the height of the air duct in the airflow direction step by step, effectively equalizes the wind pressure, realizes uniform distribution of the cold air flow in the heat dissipation system, and the cold air is accurately guided. The battery that is heated in the battery compartment achieves efficient heat dissipation; the cold air is overflowed by the heat dissipation system, and uniformly enters each battery box, thereby improving the heat dissipation consistency of the battery.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural view of a battery energy storage container of the present invention;

2 is a schematic structural view of a battery storage box for a battery storage container of the present invention;

3 is a schematic structural view of a battery rack in a battery energy storage container of the present invention;

Figure 4 is a front elevational view of the battery case of the battery energy storage container of the present invention;

Fig. 5 is a structural schematic view of the air duct of the battery storage container of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Figure 1 illustrates a preferred embodiment of a battery energy storage container of the present invention.

As shown in FIG. 1 , the battery energy storage container can be used for electric energy storage and transfer, and can be configured at a power generation end, a power transmission and distribution end, and a user end, for expanding power supply system capacity, helping to improve power quality of the power grid, and improving load. Power supply reliability; includes a cabinet that can be used to store batteries. The cabinet includes an electrical compartment 20 and a battery compartment 10 adjacent the electrical compartment 20; the electrical compartment 20 is separated from the battery compartment 10 by a fire wall. The battery compartment 10 can be used to house a battery compartment that can be used to house a power distribution cabinet and an inverter.

As shown in FIG. 1 and FIG. 2, the battery compartment 10 includes a walkway 11 disposed between the battery compartment 10 to divide the battery compartment 10 into front and rear sides, and a battery rack 12 disposed on both sides of the walkway 11. And a battery case 13 placed on the battery holder 12. In addition, the battery compartment 10 is further provided with a refrigeration system 14 and a heat dissipation system 15 in communication with the refrigeration system 14. The walkway 11 can be used to divide the battery compartment into two parts and can serve as a passage for the battery compartment to dissipate heat. The battery holder 12 can be used to house the battery case 13 and function to accommodate the battery case 13. The battery case 13 can be used to house a battery. The refrigeration system 14 can be used to reduce the cell temperature in the battery compartment 10, avoiding excessive temperature effects affecting battery performance and life. The heat dissipation system 15 can be used to cooperate with the refrigeration system 14 to dissipate heat from the battery in the battery compartment.

The walkway 11 is disposed at a central axis of the battery compartment, and divides the battery compartment 10 into a front side compartment and a rear side compartment. The width of the walkway 11 can be set according to the width in the battery compartment 10.

As shown in FIG. 3, the battery rack 12 can be divided into two columns, and is divided into eight levels. It can be understood that the number of columns and the number of layers of the battery rack 12 are not limited, and may be according to the height of the battery compartment 10 and The height of the battery case 13 is set.

As shown in FIG. 4, the battery case 13 is provided with a plurality of slots arranged side by side. The battery case 13 includes battery cells 131 arranged side by side, and the battery cells 131 can be placed in the slots of the battery case 13. The front and rear casings of the battery case 13 are provided with heat dissipation holes 132. The number of the heat dissipation holes 132 is not limited to facilitate heat dissipation of the battery cells 131 in the battery case 13. A heat dissipation channel 152 is also disposed between each of the two rows of battery cells 131 arranged side by side to improve the uniformity of heat dissipation of the battery core. The heat dissipation holes 132 may be distributed in the heat dissipation passage 152.

As shown in FIGS. 1 and 2, the refrigeration system 14 includes a cooling main unit 141 at one end of the battery compartment 10, and a stepped air duct 142 located at the top of the battery compartment 10 and connected to the refrigerating main unit 141. The cooling main unit is configured to supply a cold air flow to the battery compartment 10; the height of the stepped air duct 142 is gradually decreased in the airflow direction; so that the wind pressure of the stepped air duct 142 is uniform, and the cold air can be uniformly discharged.

The cooling main unit 141 may be an industrial air conditioner, disposed at one end of the walkway 11 , and the top of the industrial air conditioner is provided with an air supply port, and the air supply port is in communication with the stepped air duct 142, and the cold air flow is sent through the step type air duct 142. To each of the battery boxes; the maximum cooling capacity of the cooling main unit 141 is consistent with the maximum heating power of all the batteries in the battery compartment 10 to ensure that the refrigerating main machine can smoothly operate and cool.

As shown in FIG. 1 and FIG. 5, the stepped air duct 142 is disposed on both sides of the walkway 11 and is mounted above the battery rack 12. The stepped air duct 142 includes a first set on the two side battery racks 12. a section of the duct 1421 and the second section of the duct 1422 and a communication passage 1423 that communicates the first section of the duct 1421 with the second section of the duct 1422; the communication passage 1423 is located above one end of the aisle 11 and communicates with the refrigerating main unit 141. The first section of the duct 1421 and the second section of the duct 1422 are stepped, and the steps of the first section and the second section of the duct are gradually reduced in the airflow direction; A plurality of air outlets 1424 are provided. The air outlets 1424 communicate with the heat dissipation system to dissipate heat from the batteries in the battery compartment 10. Specifically, the air outlet 1424 is distributed outside the first air duct 1421 and the second air duct 1422, and the height of the stepped air duct 142 is gradually lowered in the airflow direction, so that the wind pressure of each air outlet 1424 is determined. Consistently, it is ensured that the cold air flow can uniformly flow out from the respective air outlets 1424.

The heat dissipation system 15 includes a wind wall 151 disposed between each of the battery racks 12 and the wall of the battery compartment 10, and at least one heat dissipation passage 152 communicating with the wind wall 151 and disposed in the battery compartment 13; the wind wall 151 Communicating with the air outlet 1424; the edge of the unsealed side of the wind wall 151 is seamlessly welded to the battery frame 12 to guide the cold airflow uniformly from the stepped air duct 142 into each of the battery cases 13; The number of walls 151 is the same as the number of steps on the stepped air duct 142, and is independently set; specifically distributed under each step, and each wind wall corresponds to an air outlet 1424, which is connected to the wind wall and The walkway increases the heat dissipation surface of the battery core, which is conducive to uniform heat dissipation. The air conditioning and refrigeration are turned on, and the cold airflow uniformly flows into the heat dissipation channel 152 of each of the battery boxes 13 through the stepped air duct 142 and the independent wind wall 151 of the battery rack 12 from the top of the air conditioner, thereby achieving efficient and uniform heat dissipation for all the batteries.

Further, the housing of the case is provided with a louver that can dissipate heat from the battery compartment 10.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention; it should be noted that The technical personnel can freely combine the above technical features without departing from the concept of the present invention, and can also make some modifications and improvements, which are all within the scope of protection of the present invention; Equivalent transformations and modifications made within the scope of the novel claims are intended to be included within the scope of the appended claims.

Claims

A battery energy storage container includes a cabinet, the cabinet including an electrical compartment (20) and a battery compartment (10) adjacent to the electrical compartment (20); wherein the battery compartment (10) Provided therein is a refrigeration system (14) for reducing the temperature of the battery cells in the battery compartment (10), and a heat dissipation system (15) in communication with the refrigeration system (14), the refrigeration system (14) including the location a cooling main unit (141) at one end of the battery compartment (10), and a stepped air duct (142) located at the top of the battery compartment (10) and connected to the cooling main unit (141) for guiding air; The height of the air duct (142) is gradually decreased in the airflow direction; the air duct (1424) is disposed on both sides of the stepped air duct (142), and the air outlet (1424) and the heat dissipation system (15) Connected to dissipate heat from the battery compartment (10).
The battery energy storage container according to claim 1, wherein the battery compartment (10) comprises a compartment disposed between the battery compartment (10) to divide the battery compartment (10) into front and rear sides ( 11) a battery rack (12) disposed on both sides of the walkway (11) and a battery case (13) placed on the battery rack (12); the cooling main unit (141) is located in the walkway ( At one end of 11), the stepped air duct (142) is disposed on both sides of the walkway (11) and mounted above the battery rack (12).
The battery energy storage container according to claim 2, wherein said stepped air duct (142) comprises a first section of duct (1421) and a second section respectively disposed on the side battery racks (12) a duct (1422) and a communication passage (1423) communicating the first duct (1421) and the second duct (1422); the communication passage (1423) is located at one end of the walkway (11) Upper and communicating with the cooling main unit (141); the first section of the duct (1421) and the second section of the duct (1422) are stepped, and the first section of the duct (1421) and the The step distribution on the second duct (1422) is gradually decreased in the airflow direction; the air outlet (1424) is distributed outside the first duct (1421) and the second duct (1422) .
The battery energy storage container of claim 1 wherein said heat dissipation system (15) includes a wind disposed between each of said battery holder (12) and said battery compartment (10) a wall (151) and at least one heat dissipation passage (152) disposed in the battery box in communication with the wind wall (151); the wind wall (151) is in communication with the air outlet (1424), the wind The battery holder (12) is seamlessly welded to the edge of the unsealed side of the wall (151).
The battery energy storage container according to claim 4, wherein said battery case (13) comprises battery cells (131) arranged side by side, and said battery cells (131) are arranged between two columns arranged side by side. Cooling channel (152).
A battery energy storage container according to claim 5, wherein said heat dissipation passage (152) connects said wind wall (151) and said walkway (11).
The battery energy storage container according to claim 3, wherein the refrigeration host (141) is an industrial air conditioner.
The battery energy storage container according to claim 7, wherein the industrial air conditioner top air supply port is in communication with the communication passage (1423) to pass the cold air flow along the first section air duct (1421) and The second section of the duct (1422) is led out.
The battery energy storage container according to claim 7, wherein the maximum cooling capacity of the cooling main unit (141) is the same as the maximum heating power of all the batteries in the battery compartment (10).
The battery energy storage container according to claim 2, wherein the front case and the rear case of the battery case (13) are each provided with a heat dissipation hole (132) for dissipating heat from the battery core.