Energy storage system

Abstract

The utility model discloses an energy storage system which comprises a container, multiple clusters of battery packs, an air duct, a plurality of air deflectors and an air conditioner, the air duct is arranged in the container and located at the top of each cluster of battery packs, the air duct is provided with a main air duct and an air inlet duct, and the main air duct is provided with an air duct cavity and a plurality of shunt air ports communicating the air duct cavity with battery cavities; the air guide plates are arranged in the air channel cavity and extend to the corresponding flow dividing air openings from the air inlet channel. According to the energy storage system, the multiple flow dividing air ports are formed in the main air duct, the air guide plate is arranged to actively intervene in air fluid flowing through the interior of the air duct cavity, and loss of cold air fluid generated by an air conditioner in the air duct is reduced. And the plurality of shunting air ports are arranged along the arrangement direction of each cluster of battery packs, so that flow equalization of inlet air of the cluster frame is realized. Therefore, the problem that in the prior art, due to nonuniformity of cold air of an air conditioner, the temperature difference value of different batteries in the working process is too large is solved, and the service life of an energy storage system is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and more specifically, to an energy storage system. Background Technology

[0002] In the current energy storage market, electrochemical energy storage dominates. A common large-scale electrochemical energy storage method uses containers as the integrated form of the energy storage system. However, batteries inevitably generate a large amount of heat during charging and discharging, thus requiring additional cooling solutions to address heat dissipation during operation. Using air conditioning for battery thermal management is an effective method. However, while direct airflow from an air conditioner has a temperature control effect, the lack of guidance during airflow can lead to significant differences in temperature control between different batteries. Large temperature differences between batteries can negatively impact the system's lifespan. To effectively solve this problem, the airflow direction of the air conditioner needs to be adjusted. Designing an effective airflow duct is a feasible solution for achieving uniform battery heat dissipation. Utility Model Content

[0003] To address one of the aforementioned technical deficiencies, this application provides an energy storage system.

[0004] The technical solution adopted in this application is as follows:

[0005] An energy storage system, comprising:

[0006] A container, the container having a battery compartment;

[0007] Multiple battery packs, each battery pack being disposed within the battery cavity;

[0008] The air duct is disposed in the container and located on top of each battery pack. The air duct has a main air duct and an inlet air duct. The main air duct has an air duct cavity and multiple branch air outlets connecting the air duct cavity and the battery cavity. Each branch air outlet is arranged sequentially along the arrangement direction of each battery pack. The inlet air duct is connected to the main air duct.

[0009] A plurality of air guide plates, each of which is disposed within the air duct cavity, and each of which extends from the air inlet duct to the corresponding air outlet;

[0010] An air conditioner is installed in the container, and the air conditioner's cold air outlet is connected to the air inlet duct.

[0011] Optionally, each of the said air vents extends along the length of the battery pack.

[0012] Optionally, the energy storage system includes a cluster frame, on which each cluster battery pack is mounted, with a gap cavity between two adjacent cluster battery packs, and a gap cavity between two cluster battery packs at both ends and a housing disposed outside the cluster frame;

[0013] Each of the aforementioned air vents is connected to a corresponding gap cavity, and each air vent extends along the corresponding gap cavity.

[0014] Optionally, the width of the split air vents at both ends is smaller than the width of the split air vent in the middle.

[0015] Optionally, the energy storage system includes two air guides that extend to the air vents at both ends.

[0016] Optionally, the main air duct has a bottom wall, a top wall, and a peripheral wall connecting the top wall and the bottom wall, and the bottom wall, top wall, and peripheral wall enclose the air duct cavity;

[0017] The air diversion vent is opened on the bottom wall, the air guide plate is connected to the bottom wall, and the air inlet duct is connected to the peripheral side wall.

[0018] Optionally, the air duct includes a baffle plate;

[0019] The peripheral sidewall has a rear sidewall opposite to the air inlet duct;

[0020] The wind baffle extends along the arrangement direction of each air vent, and the wind baffle is connected to the top wall and has a gap with the bottom wall;

[0021] The wind deflector is located between the rear sidewall and the air guide plate.

[0022] Optionally, the wind deflector is installed on the top wall at an adjustable tilt angle.

[0023] Optionally, there is an angle between the rear sidewall and the bottom wall, and the angle is an acute angle.

[0024] Optionally, the air conditioner has a return air vent;

[0025] The return air vents are located on the exhaust side of the cooling fans on each battery pack;

[0026] The air conditioner, the air duct, and the battery cavity form a circulating air path.

[0027] By adopting the above technical solution, this application has the following beneficial effects:

[0028] This application's energy storage system incorporates multiple branch air vents within its main air duct, along with air guide plates to actively regulate the airflow within the duct cavity, reducing the loss of cool air generated by the air conditioner within the duct. These branch air vents are positioned along the arrangement direction of each battery pack cluster, ensuring uniform airflow into the cluster rack. This solves the problem in existing technologies where the uneven distribution of cool air from the air conditioner leads to excessive temperature differences between different batteries during operation, thus extending the lifespan of the energy storage system.

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0031] Figure 1 A partial structural schematic diagram of an energy storage system provided in an embodiment of this disclosure is shown (the container has been removed from the figure);

[0032] Figure 2 A structural diagram showing the energy storage system provided in this embodiment of the present disclosure with the container and top wall removed is shown;

[0033] Figure 3 A cross-sectional view of a partial structure of an energy storage system provided in an embodiment of this disclosure is shown.

[0034] In the diagram: 1. Battery pack; 11. Cooling fan; 2. Main air duct; 21. Top wall; 22. Bottom wall; 221. Split air vent; 23. Rear side wall; 24. Air guide plate; 25. Baffle plate; 3. Air intake duct; 4. Air conditioner; 5. Outer shell; 6. Gap cavity.

[0035] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] See Figures 1 to 3 As shown in the figure, this application provides an energy storage system, including: a container (not shown), multiple battery packs 1, an air duct, several air guide plates 24, and an air conditioner 4. The container has a battery cavity, and each battery pack 1 is disposed in the battery cavity. The air duct is disposed in the container, and the air duct is located on top of each battery pack 1. The air duct has a main air duct 2 and an inlet air duct 3. The main air duct 2 has an air duct cavity and multiple branch air outlets 221 connecting the air duct cavity and the battery cavity. Each branch air outlet 221 is arranged sequentially along the arrangement direction of each battery pack 1. The inlet air duct 3 is connected to the main air duct 2. Each air guide plate 24 is disposed in the air duct cavity, and each air guide plate 24 extends from the inlet air duct 3 to the corresponding branch air outlet 221. The air conditioner 4 is disposed in the container, and the cold air outlet of the air conditioner 4 is connected to the inlet air duct 3. The inner walls of the main air duct 2 and the inlet air duct 3 can be lined with heat-insulating foam to reduce heat loss.

[0040] The energy storage system of this application has multiple branch air vents 221 installed in the main air duct 2, and a guide vane 24 is installed to actively intervene in the airflow within the main air duct, reducing the loss of cold air generated by the air conditioner 4 in the air duct. The multiple branch air vents 221 are arranged along the arrangement direction of each battery pack 1, realizing uniform airflow within the battery cavity. This solves the problem in the prior art where the unevenness of the cold air from the air conditioner 4 causes excessive temperature differences between different batteries during operation, thus extending the lifespan of the energy storage system.

[0041] In some possible implementations, the air vent 221 extends along the length of the battery pack 1. This allows each cell arranged sequentially along the length of the battery pack 1 to indirectly contact and dissipate heat with the flowing cool air, ensuring balanced heat dissipation for cells in different parts of the battery pack 1.

[0042] In some possible implementations, the energy storage system includes a housing 5 and a cluster frame. The housing 5 covers the outer side of the cluster frame, and each cluster battery pack 1 is mounted on the cluster frame. A gap cavity 6 exists between adjacent cluster battery packs 1, and a gap cavity 6 exists between two cluster battery packs 1 at each end and the housing 5 mounted on the outer side of the cluster frame. Each of the diversion vents 221 is connected to a corresponding gap cavity 6, and each diversion vent 221 extends along the corresponding gap cavity 6. The cold air entering the main air duct 2 is diverted to different cluster battery packs 1 through each diversion vent 221, achieving balanced heat dissipation for each cluster battery pack 1.

[0043] In some possible implementations, the width of the end air vents 221 is smaller than the width of the middle air vent 221. The end air vents 221 correspond only to one side of a battery pack 1, while each middle air vent 221 corresponds to the gap cavity 6 between two adjacent battery packs 1. Therefore, the width of the middle air vent 221 being greater than that of the end air vents 221 is more conducive to balanced heat dissipation for each battery pack 1. The area of ​​each air vent 221 ensures that the air velocity and flow rate into the battery pack rack are uniform across different air vents 221, guaranteeing that battery packs 1 in the same layer of the rack receive similar cooling capacity.

[0044] In some possible implementations, the energy storage system includes two air deflectors 24, each extending towards a split air outlet 221 at both ends. This directs the cold air to both sides, facilitating the even distribution of cold air to each split air outlet 221.

[0045] In some possible implementations, the main air duct 2 has a bottom wall 22, a top wall 21, and a peripheral wall connecting the top wall 21 and the bottom wall 22. The bottom wall 22, the top wall 21, and the peripheral wall enclose the air duct cavity. The bottom wall 22 is located at the top of the cluster frame. For the top of each cluster battery pack 1, the diversion air outlet 221 is opened on the bottom wall 22. The air guide plate 24 is connected to the bottom wall 22, and the air inlet duct 3 is connected to the peripheral wall.

[0046] The air guide plate 24 can be connected to the bottom wall 22 of the main air duct 2 by welding or hinge. It can be made into a fixed or deformable air guide plate 24. The fixed air guide plate is generally fixed by welding, screwing or other fixing methods.

[0047] In some possible implementations, the air duct includes a baffle plate 25, and the peripheral sidewall has a rear sidewall 23 opposite to the air inlet duct 3. The baffle plate 25 extends along the arrangement direction of each branch air outlet 221, is connected to the top wall 21 and has a gap with the bottom wall 22, and is located between the rear sidewall 23 and the guide plate 24. A portion of the cold air flowing from the air inlet duct 3 to the main air duct 2 is guided to each branch air outlet 221 by the baffle plate 25. The baffle plate 25 can be inclined, allowing the cold air to flow towards the bottom wall 22. The baffle plate 25 prevents the air rebounding from the rear sidewall 23 and flowing in the opposite direction from colliding with the newly introduced air to form a low-speed recirculation zone, thus facilitating the smooth introduction of cold air into the lower cluster.

[0048] In some possible implementations, the baffle 25 is mounted on the top wall 21 at an adjustable tilt angle. Adjusting the angle of the baffle 25 changes the direction of airflow at the top. This actively intervenes in the airflow through the main duct 2, reducing the loss of the flowing cold air generated by the air conditioner 4 within the duct.

[0049] The wind deflector 25 can be hinged to the top wall 21, and a telescopic component can be provided between the wind deflector 25 and the top wall 21. The angle of the wind deflector 25 can be adjusted by the telescopic movement of the component. The telescopic component can be an actuator, a telescopic cylinder, or a hydraulic cylinder, etc. The wind deflector 25 can generally be controlled electrically or manually.

[0050] In some possible implementations, there is an angle between the rear sidewall 23 and the bottom wall 22, and the angle is acute. The acute angle between the rear sidewall 23 and the bottom wall 22 reduces the rebound loss of the air and can smoothly guide the cold air to the diversion vent 221 on the bottom wall 22.

[0051] Optionally, the air conditioner 4 has a return air vent located on the exhaust side of the cooling fan 11 on each battery pack 1. The air conditioner 4, the air duct, and the battery cavity form a circulating air path. After the cold air entering the battery pack 1 exchanges heat with the battery cells, it is exhausted to the return air vent side of the air conditioner 4 under the action of the cooling fan 11. After entering the air conditioner 4 for heat exchange (cooling), it enters the exhaust air vent of the air conditioner 4 and is further introduced into the air intake duct 3 from the exhaust air vent of the air conditioner 4.

[0052] The main air duct 2 is connected to the cluster frame. The connection between the main air duct 2 and the cluster frame can be fixed with bolts of the same specifications as the cluster frame.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An energy storage system, characterized in that, include: A container, the container having a battery compartment; Multiple battery packs, each battery pack being disposed within the battery cavity; The air duct is disposed in the container and located on top of each battery pack. The air duct has a main air duct and an inlet air duct. The main air duct has an air duct cavity and multiple branch air outlets connecting the air duct cavity and the battery cavity. Each branch air outlet is arranged sequentially along the arrangement direction of each battery pack. The inlet air duct is connected to the main air duct. A plurality of air guide plates, each of which is disposed within the air duct cavity, and each of which extends from the air inlet duct to the corresponding air outlet; An air conditioner is installed in the container, and the air conditioner's cold air outlet is connected to the air inlet duct.

2. The energy storage system according to claim 1, characterized in that, Each of the aforementioned air vents extends along the length of the battery pack.

3. The energy storage system according to claim 1, characterized in that, It includes a cluster frame, each cluster battery pack is disposed on the cluster frame, there is a gap cavity between two adjacent cluster battery packs, and there is a gap cavity between the two cluster battery packs at both ends and the outer shell disposed on the outside of the cluster frame; Each of the aforementioned air vents is connected to a corresponding gap cavity, and each air vent extends along the corresponding gap cavity.

4. The energy storage system according to claim 3, characterized in that, The width of the split air vents at both ends is smaller than the width of the split air vent in the middle.

5. The energy storage system according to claim 3, characterized in that, It includes two air guide plates, which extend to the air outlets at both ends.

6. The energy storage system according to claim 1, characterized in that, The main air duct has a bottom wall, a top wall, and a peripheral wall connecting the top wall and the bottom wall, and the bottom wall, top wall, and peripheral wall enclose the air duct cavity; The air diversion vent is opened on the bottom wall, the air guide plate is connected to the bottom wall, and the air inlet duct is connected to the peripheral side wall.

7. The energy storage system according to claim 6, characterized in that, The air duct includes a wind deflector; The peripheral sidewall has a rear sidewall opposite to the air inlet duct; The wind baffle extends along the arrangement direction of each air vent, and the wind baffle is connected to the top wall and has a gap with the bottom wall; The wind deflector is located between the rear sidewall and the air guide plate.

8. The energy storage system according to claim 7, characterized in that, The wind deflector is installed on the top wall at an adjustable tilt angle.

9. The energy storage system according to claim 7, characterized in that, There is an angle between the rear sidewall and the bottom wall, and the angle is acute.

10. The energy storage system according to claim 1, characterized in that, The air conditioner has a return air vent; The return air vents are located on the exhaust side of the cooling fans on each battery pack; The air conditioner, the air duct, and the battery cavity form a circulating air path.

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