Distributed air-cooled industrial and commercial energy storage system

Abstract

The utility model provides a distributed air-cooled industrial and commercial energy storage system, which comprises a high-voltage box, a PCS and a plurality of energy storage modules which are positioned in an energy storage bin, and a plurality of air conditioners positioned outside the energy storage bin, and the air conditioners are in one-to-one correspondence with the energy storage modules and are communicated with the energy storage modules through distributed air ducts; the energy storage module is provided with a heat dissipation fan penetrating through the inside and the outside of the energy storage module, and the energy storage bin is provided with battery heat dissipation holes corresponding to the heat dissipation fan. Through the arrangement of the plurality of air conditioners and the distributed air ducts, the temperature consistency among the energy storage modules in the industrial and commercial energy storage system can be improved, the heat management balance of the energy storage modules is improved, and the cycle life, the capacity and the safety of the air-cooled industrial and commercial energy storage system are improved; the internal space utilization rate and the volume energy density of the energy storage system are improved, and the maintenance difficulty is reduced; through the design of the shape of the distributed air duct and the positions of the air inlet pipe and the air outlet pipe, the cooling efficiency and the cooling effect of the energy storage module are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to a distributed air-cooled industrial and commercial energy storage system. Background Technique

[0002] With the development of lithium battery energy storage technology, the requirements for high energy density, lithium battery safety and cycling are increasing continuously. At present, there is an urgent need to develop a distributed air-cooled industrial and commercial energy storage system with a precise temperature control system.

[0003] At present, when the air-cooled industrial and commercial energy storage system products are charging and discharging, the temperature consistency between the battery modules is relatively poor. The main reason is that its temperature control system performs thermal management on all battery modules through an air conditioner and a large air duct, resulting in a large difference in the thermal management effect between the battery modules closest to the air duct and the battery modules farthest from the air duct, which is not conducive to the thermal management of the battery modules, causing a relatively large temperature difference between the battery cores of the entire industrial and commercial energy storage system, and reducing the cycle life, capacity and safety of the air-cooled industrial and commercial energy storage system; at the same time, due to the relatively large overall mass of the air conditioner of the existing air-cooled industrial and commercial energy storage system, later, equipment such as forklifts are needed for the maintenance, disassembly and installation of the air conditioner, and its later maintenance cost is relatively high.

[0004] This obviously cannot meet the requirements of the market in recent years for the cycle life, capacity, safety and easy maintenance of the air-cooled industrial and commercial energy storage system. Content of the Utility Model

[0005] The purpose of the utility model is to provide a distributed air-cooled industrial and commercial energy storage system to solve the problems in the above background.

[0006] The technical solution of the utility model includes: a distributed air-cooled industrial and commercial energy storage system, which includes: a high-voltage box, a PCS and a number of energy storage modules located in an energy storage bin, and a number of air conditioners located outside the energy storage bin. The air conditioners correspond to the energy storage modules one by one and are connected through a distributed air duct.

[0007] Preferably, a heat dissipation fan penetrating inside and outside the energy storage module is provided on the energy storage module, and a battery heat dissipation hole corresponding to the heat dissipation fan is provided on the energy storage bin.

[0008] Preferably, the distributed air duct includes an air duct plate, an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are both connected to the inside of the air duct plate. The air outlet of the air conditioner is arranged at the air inlet pipe, and the air inlet of the energy storage module is arranged at the air outlet pipe.

[0009] Preferably, the airway plate extends along the length direction of the energy storage module, and its plate surface abuts the energy storage module. The air inlet pipe and the air outlet pipe are located on both sides of the energy storage module, and the cooling fan and the air inlet pipe are located on the same side of the energy storage module.

[0010] Preferably, the width of the airway plate gradually increases from the air inlet pipe end to the air outlet pipe end.

[0011] Preferably, the air inlet pipe is provided with a first air port and a second air port, the first air port is connected to the airway plate at the top of the air inlet pipe, and the second air port is provided on the side of the air inlet pipe away from the energy storage module and is connected to the air conditioner through a clamping part.

[0012] Preferably, the air outlet pipe is provided with a third air port and a fourth air port, the third air port is connected to the airway plate at the top of the air outlet pipe, and the fourth air port is provided on the side of the air outlet pipe close to the energy storage module and is connected to the energy storage module through a second clamping portion.

[0013] Preferably, an energy control area and an energy storage area are provided in the energy storage bin, the high-voltage box and the PCS are located in the energy control area, the energy storage module is located in the energy storage area, and a PCS heat dissipation mesh plate corresponding to the energy control area is provided on the energy storage bin.

[0014] Preferably, the air conditioner is a wall-mounted air conditioner that is detachably mounted on the energy storage bin.

[0015] The beneficial effects of the utility model are as follows: through the arrangement of multiple air conditioners and distributed air ducts, the temperature consistency between energy storage modules in industrial and commercial energy storage systems can be improved, the thermal management balance of energy storage modules can be improved, the cycle life, capacity and safety of air-cooled industrial and commercial energy storage systems can be improved, the internal space utilization and volume energy density of the energy storage system can be improved, and the difficulty of maintenance can be reduced; by designing the shape of the distributed air ducts and the positions of the air inlet and outlet pipes, the cooling efficiency and cooling effect of the energy storage modules can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an external structure diagram of an embodiment of the utility model;

[0017] Figure 2 It is an internal structure diagram of an embodiment of the utility model;

[0018] Figure 3 It is a plan view of a door panel in an embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the installation of the distributed air duct in the embodiment of the utility model;

[0020] Figure 5It is a positional relationship diagram of a distributed air duct and an energy storage module in an embodiment of the present utility model;

[0021] Figure 6 It is a structural disassembly diagram of a distributed air duct in an embodiment of the present utility model.

[0022] In the figure:

[0023] 1. Energy storage bin; 1-1. Energy control area; 1-2. Energy storage area; 1-3. Door panel; 1-4. PCS heat dissipation mesh panel; 1-5. Battery heat dissipation holes;

[0024] 2. High-voltage box;

[0025] 3. PCS;

[0026] 4. Energy storage module; 4-1. Housing; 4-2. Battery cell;

[0027] 5. Distributed air duct; 5-1. Air duct plate; 5-2. Intake pipe; 5-21. First air port; 5-22. Second air port; 5-23. First clamping part; 5-3. Exhaust pipe; 5-31. Third air port; 5-32. Fourth air port; 5-33. Second clamping part;

[0028] 6. Air conditioner;

[0029] 7. Cooling fan. Specific embodiments

[0030] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0033] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0034] Refer to the attached Figures 1-5 , the present utility model provides a distributed air-cooled industrial and commercial energy storage system, which includes an energy storage bin 1, a high-voltage box 2, a PCS 3, an energy storage module 4, a distributed air duct 5, and an air conditioner 6.

[0035] The energy storage bin 1 is a hollow shell internally divided into an energy control area 1-1 and an energy storage area 1-2, and is provided with a detachable door panel 1-3 thereon. The high-voltage box 2 and the PCS 3 are located in the energy control area 1-1. The high-voltage box 2 electrically connects high-voltage components through busbars and wire harnesses, providing functions such as charge and discharge control, high-voltage component power-on control, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control, and battery temperature regulation for the energy storage system, protecting and monitoring the operation of the high-voltage system. The PCS 3 is used to control the charging and discharging processes of the battery and perform AC-DC conversion. The door panel 1-3 is provided with a PCS heat dissipation mesh panel 1-4 (a plate-shaped structure with holes) corresponding to the energy control area 1-1, enabling the devices in the energy control area 1-1 to dissipate heat normally to ensure normal operation.

[0036] The energy storage module 4 and the distributed air duct 5 are located in the energy storage area 1-2. The number of energy storage modules 4 can be configured according to actual energy storage requirements. The air conditioner 6 is installed on the door panel 1-3, and its quantity is the same as that of the energy storage module 4, and the positions correspond to those of the energy storage module 4 one by one. The air conditioner 6 is connected to the energy storage module 4 one by one through the distributed air ducts 5 with the same quantity and positions. The energy storage module 4 includes a housing 4-1 and battery cells 4-2. A plurality of battery cells 4-2 are arranged in an orderly manner in the housing 4-1. The gaps between the battery cells 4-2 and the gaps between the battery cells 4-2 and the housing 4-1 are the air flow channels inside the energy storage module 4. A heat dissipation fan 7 penetrating the inside and outside is provided on the housing 4-1. A battery heat dissipation hole 1-5 corresponding to the heat dissipation fan 7 is provided on the door panel 1-3 of the energy storage bin 1. When the system operates, the cold air output by the air conditioner 6 enters the inside of the energy storage module 4 through the distributed air duct 5, and then the heat dissipation fan 7 takes the hot air inside the energy storage module 4 out of the energy storage bin 1. By configuring the distributed air ducts 5 and the air conditioners 6 corresponding to the energy storage modules 4 one by one, the temperature near each energy storage module 4 in the energy storage bin 1 can be independently controlled, and the cold air output by the air conditioner 6 can be effectively transmitted to the vicinity and inside of the energy storage module 4 responsible for cooling through the distributed air duct 5, avoiding the problem that the energy storage module 4 far from the large air duct in the traditional technology cannot be effectively cooled. This system is beneficial to improving the temperature consistency between the energy storage modules 4, improving the thermal management balance of the energy storage modules 4, and increasing the cycle life, capacity and safety of the air-cooled industrial and commercial energy storage system.

[0037] The distributed air duct 5 is distributed outside each energy storage module 4 and can be fixed to the housing 4-1 of the energy storage module 4 by means of riveting, screwing, etc. To improve the cooling effect on the energy storage module 4, the distributed air duct 5 in this embodiment is configured to include an air duct plate 5-1, an intake pipe 5-2, and an exhaust pipe 5-3. The plate surface of the air duct plate 5-1 abuts against the outer wall of the energy storage module 4 and extends along the length direction of the energy storage module 4. The intake pipe 5-2 and the exhaust pipe 5-3 are respectively located on both sides of the long end of the air duct plate 5-1 and are both in communication with the inside of the air duct plate 5-1. The air outlet of the air conditioner 6 is arranged at the intake pipe 5-2, and the air inlet of the energy storage module 4 is arranged at the exhaust pipe 5-3. The cooling fan 7 and the intake pipe 5-2 are located on the same side of the long end of the energy storage module 4. In this case, the cold air output by the air conditioner 6 first enters the air duct plate 5-1. Since the plate surface of the air duct plate 5-1 abuts against the outer wall of the energy storage module 4, the energy storage module 4 can be cooled and dissipated heat for the first time. Then, the cold air enters the energy storage module 4 through the exhaust pipe 5-3 of the air duct plate 5-1. Due to the action of the cooling fan 7 and the temperature difference and pressure difference of the internal air flow of the energy storage module 4, the cold air flows in the energy storage module 4 along a path opposite to the air flow direction in the air duct plate 5-1, directly contacting the battery cells 4-2 inside the energy storage module 4 and taking away their heat to cool and dissipate heat for the second time for the energy storage module 4. This system not only accurately adjusts the temperature and dissipates heat for each energy storage module 4 through multiple air conditioners 6 and distributed air ducts 5, but also improves the cooling efficiency and heat dissipation effect for each energy storage module 4 through the above two cooling and heat dissipation processes.

[0038] Since the cold air located in the air duct plate 5-1 does not directly contact the battery cells that generate heat, its cooling effect is lower than that of the above second cooling process and can be used as the main heat dissipation means. Therefore, by adjusting the shape and structure of the air duct plate 5-1 and changing the air flow speed therein, the cold air can enter the energy storage module 4 as soon as possible and directly contact the battery cells 4-2 for efficient cooling and heat dissipation. For example, the shape of the air duct plate 5-1 can be configured such that from the intake pipe 5-2 end to the exhaust pipe 5-3 end, the width of the air duct plate 5-1 gradually increases. The width of the air duct plate 5-1 is inversely proportional to the internal flow resistance. Such a gradually widened plate shape can improve the relative air flow speed while maintaining the effect of the first cooling.

[0039] Refer to the appendix Figure 6The air inlet pipe 5-2 is provided with a first air port 5-21 and a second air port 5-22. The first air port 5-21 is connected to the airway plate 5-1 at the top of the air inlet pipe 5-2. The second air port 5-22 is provided on the side of the air inlet pipe 5-2 away from the energy storage module 4, and is connected to the air conditioner 6 through a clamping part 1 5-23. The side of the air inlet pipe 5-2 away from the second air port 5-22 abuts against the energy storage module 4, thereby improving the connection tightness and integration of each component and improving the space utilization rate; the air outlet pipe 5-3 is provided with a third air port 5-31 and a fourth air port 5-32. The third air port 5-31 is connected to the airway plate 5-1 at the top of the air outlet pipe 5-3. The fourth air port 5-32 is provided on the side of the air outlet pipe 5-3 close to the energy storage module 4, and is connected to the energy storage module 4 through a clamping part 2 5-33.

[0040] The above-mentioned air conditioner 6 is a wall-mounted air conditioner, and is detachably arranged on the door panels 1-3 of the energy storage bin 1. Due to its large number and one-to-one correspondence with the distributed air ducts 5, the choices in size and model are more diverse. Due to the difference in power and internal structure, its size can be significantly smaller than the size of a single large air conditioner adopted by traditional technology, which not only reduces the difficulty of disassembly and assembly during maintenance by maintenance workers (traditionally, mechanical assistance such as cranes is required, but now one person and one tool kit can be completed), but also because the smaller air conditioners 6 are evenly arranged on the door panels 1-3 of the energy storage bin 1, the space they occupy in the depth direction of the energy storage bin 1 is significantly smaller than that of traditional large air conditioners, which can effectively improve the space utilization and volume energy density in the energy storage bin 1.

[0041] Compared with the prior art, the beneficial effects of the present invention are as follows: through the arrangement of multiple air conditioners 6 and distributed air ducts 5, the temperature consistency between the energy storage modules 4 in the industrial and commercial energy storage system can be improved, the thermal management balance of the energy storage module 4 can be improved, the cycle life, capacity and safety of the air-cooled industrial and commercial energy storage system can be improved, and the internal space utilization and volume energy density of the energy storage system can be improved, and the maintenance difficulty can be reduced; by designing the shape of the distributed air duct 5 and the position of the air inlet pipe 5-2 and the air outlet pipe 5-3, the cooling efficiency and cooling effect of the energy storage module 4 can be improved.

[0042] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A distributed air-cooled industrial and commercial energy storage system, characterized in that: include: A high-voltage box, a PCS and several energy storage modules are located in the energy storage bin, and several air conditioners are located outside the energy storage bin. The air conditioners correspond to the energy storage modules one by one and are connected through distributed air ducts.

2. The distributed air-cooled industrial and commercial energy storage system according to claim 1 is characterized in that: The energy storage module is provided with a heat dissipation fan penetrating the inside and outside thereof, and the energy storage bin is provided with battery heat dissipation holes corresponding to the heat dissipation fan.

3. The distributed air-cooled industrial and commercial energy storage system according to claim 2 is characterized in that: The distributed air duct includes an air duct plate, an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are both connected to the inside of the air duct plate. The air outlet of the air conditioner is arranged at the air inlet pipe, and the air inlet of the energy storage module is arranged at the air outlet pipe.

4. The distributed air-cooled industrial and commercial energy storage system according to claim 3 is characterized in that: The airway plate extends along the length direction of the energy storage module, and its plate surface abuts against the energy storage module. The air inlet pipe and the air outlet pipe are located on both sides of the energy storage module, and the heat dissipation fan and the air inlet pipe are located on the same side of the energy storage module.

5. The distributed air-cooled industrial and commercial energy storage system according to claim 3 or 4, characterized in that: From the air inlet pipe end to the air outlet pipe end, the width of the airway plate gradually increases.

6. The distributed air-cooled industrial and commercial energy storage system according to claim 5, characterized in that: The air inlet pipe is provided with a first air port and a second air port, the first air port is connected to the airway plate at the top of the air inlet pipe, and the second air port is provided on the side of the air inlet pipe away from the energy storage module and connected to the air conditioner through a clamping portion.

7. The distributed air-cooled industrial and commercial energy storage system according to claim 5, characterized in that: The air outlet pipe is provided with a third air port and a fourth air port, the third air port is connected to the airway plate at the top of the air outlet pipe, and the fourth air port is provided on the side of the air outlet pipe close to the energy storage module and is connected to the energy storage module through a second clamping portion.

8. The distributed air-cooled industrial and commercial energy storage system according to any one of claims 1-4, 6-7, characterized in that: An energy control area and an energy storage area are provided in the energy storage bin, the high-voltage box and the PCS are located in the energy control area, the energy storage module is located in the energy storage area, and a PCS heat dissipation mesh plate corresponding to the energy control area is provided on the energy storage bin.

9. The distributed air-cooled industrial and commercial energy storage system according to claim 8, characterized in that: The air conditioner is a wall-mounted air conditioner that is detachably mounted on the energy storage bin.

Images