Air-cooled battery pack for energy storage

Abstract

The utility model belongs to the technical field of energy storage batteries, and particularly relates to an air-cooled battery pack for energy storage, which comprises a battery pack body, the battery pack body comprises a bottom support frame, a mounting plate is arranged at the front end of the bottom support frame, and a front panel is arranged at the front end of the mounting plate. Two groups of battery modules which are arranged side by side are arranged above the bottom support frame, an upper cover plate is arranged above the battery modules, and a first air duct is arranged between every two adjacent battery modules; and a second air duct and a third air duct are arranged between the outer sides of the two battery modules and the plane where the outer wall of the bottom support frame is located from left to right, a fire-fighting agent spray head is arranged on the portion, located above the air inlet, of the mounting plate, and a fire-fighting pipeline is arranged on the outer side of the fire-fighting agent spray head. The air cooling device is reasonable in design and simple in structure, the air cooling effect of equipment is improved, the overall structural weight of the battery pack is reduced, the energy efficiency is improved, and the use requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage batteries, and in particular relates to an air-cooled battery pack for energy storage. Background Art

[0002] In order to promote the development of the "dual carbon" strategic goal, renewable energy power generation and smart grid industries account for an increasing proportion of electricity consumption in various industries, and energy storage technology is the key to continuous, adjustable and stable renewable energy power generation. Therefore, there is an urgent need to improve the energy density of energy storage systems, battery balance and high safety factors of energy storage systems.

[0003] With the continuous progress and development of society, battery pack technology has also been gradually developed. In particular, there are still certain disadvantages in air-cooled battery pack technology: First, the fan of the air-cooled battery pack mostly uses a single-channel exhaust method between two modules to cool a single side of the battery cell, which can easily cause the temperature of other positions inside the battery cell that are not swept by the cold air to be too high, causing the battery cell capacity to decrease rapidly and affecting the number of cycles of the battery cell; second, the air-cooled battery pack equipped with a fan is large in size and cumbersome in structure, especially the operation of the fan occupies the battery pack storage power, which further reduces the energy efficiency; third, most conventional air-cooled battery packs lack fire-fighting equipment, which will lead to poor thermal runaway suppression effect and poor safety performance of the battery cell. For this reason, we provide a reasonable design, simple structure, convenient processing, and effective improvement of the air-cooling effect of the equipment, effectively increase the cooling area, ensure air-cooling performance, increase safety, and at the same time, reduce the overall structural weight of the battery pack, and to a certain extent reduce its own power consumption, improve energy efficiency, and have a good suppression effect on thermal runaway, effectively meeting the use needs of air-cooled battery packs for energy storage. Utility Model Content

[0004] In response to the technical problems existing in the use of the above-mentioned air-cooled battery pack, the utility model proposes an air-cooled battery pack with reasonable design, simple structure, convenient processing, and effective improvement of the air cooling effect of the equipment, effectively increasing the cooling area, ensuring the air cooling performance, and increasing safety. At the same time, the overall structural weight of the battery pack is reduced, and to a certain extent, the power consumption itself is reduced, the energy efficiency is improved, and the air-cooled battery pack for energy storage has a good inhibitory effect on thermal runaway, which effectively meets the use requirements.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is an air-cooled battery pack for energy storage, including a battery pack body, the battery pack body including a bottom support frame, a mounting plate is provided at the front end of the bottom support frame, a front panel is provided at the front end of the mounting plate, two groups of battery modules arranged side by side are provided above the bottom support frame, an upper cover plate is provided above the battery module, a first air duct is provided between two adjacent battery modules, a second air duct and a third air duct are provided from left to right between the outer sides of the two groups of battery modules and the plane where the outer wall of the bottom support frame is located, a plurality of air inlets in a hexagonal shape are evenly distributed in the mounting plate corresponding to the first air duct, a fire-fighting agent nozzle is provided on the mounting plate above the air inlet, and a fire-fighting pipeline is provided on the outer side of the fire-fighting agent nozzle.

[0006] Preferably, a spoiler assembly is provided in the first air duct, and the spoiler assembly includes a placement rack designed in a Y shape, a through hole designed in an elliptical shape is provided at the geometric center of the placement rack, a connecting plate is provided at the lower end of the placement rack, first heat sinks are provided on both sides of the placement rack, a second heat sink is provided above the placement rack, and spoiler grooves for spoiling the flow are provided on both end surfaces of the first heat sink and the second heat sink.

[0007] Preferably, a battery management system module is arranged on the inner side of one end of the mounting plate close to the battery module, and a positive terminal aviation plug and a negative terminal aviation plug are respectively arranged on the left and right sides of the mounting plate corresponding to the battery management system module.

[0008] Preferably, a series copper bus is provided at the rear end above the two groups of battery modules, a positive output copper bus is provided above the front end of one battery module, and a negative output copper bus is provided above the front end of the other battery module.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. The utility model provides an air-cooled battery pack for energy storage. By setting up three air ducts in the battery pack body, the cooling surface of the battery cell is increased, so that the temperature inside the battery cell is more balanced and the safety is improved. At the same time, the design also cancels the setting of conventional fans. On the one hand, it reduces the power consumption of the components of the equipment itself and improves the energy efficiency. On the other hand, it can reduce the weight of the battery pack body to a certain extent and meet the use requirements. By setting up a fire-fighting agent nozzle, the fire-fighting agent can be sprayed comprehensively, and the out-of-control battery cell can be better suppressed, thereby improving the safety level. The device has a reasonable design, a simple structure, and is easy to process. It can effectively improve the air-cooling effect of the equipment, effectively increase the cooling area, ensure the air-cooling performance, and increase safety. At the same time, it reduces the overall structural weight of the battery pack, reduces its own power consumption to a certain extent, improves energy efficiency, and has a good inhibitory effect on thermal runaway, effectively meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0012] Figure 1 It is a schematic diagram of the structure of an air-cooled battery pack for energy storage;

[0013] Figure 2 A top view of the internal structure of an air-cooled battery pack for energy storage (excluding the upper cover);

[0014] Figure 3 A schematic diagram of the internal structure of an air-cooled battery pack for energy storage (excluding the upper cover and front panel);

[0015] Figure 4 is a schematic diagram of the structure of the spoiler component;

[0016] In the above figures, 1. bottom support frame; 2. mounting plate; 21. air inlet; 3. front panel; 4. battery module; 5. first air duct; 6. second air duct; 7. third air duct; 8. fire agent nozzle; 81. fire pipeline; 9. battery management system module; 10. positive pole aviation plug; 11. negative pole aviation plug; 12. series copper busbar; 13. positive pole output copper busbar; 14. negative pole output copper busbar; 15. spoiler assembly; 151. placement rack; 1511. connecting plate; 152. first heat sink; 153. second heat sink; 154. spoiler groove; 155. through hole; 16. upper cover. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0019] Examples, such as Figure 1 to Figure 4As shown, an air-cooled battery pack for energy storage includes a battery pack body, the battery pack body includes a bottom bracket frame 1, and a mounting plate 2 is arranged at the front end of the bottom bracket frame 1, wherein, for the established mounting plate 2, a slot for easy pushing and pulling is opened at its bottom, so that to a certain extent, the frame structure constituting the battery pack body is used as a push-pull position during installation to replace the handle, the device design is more reasonable, and the weight of the battery pack body can be relatively reduced, and the practicality is strong. A front panel 3 is arranged at the front end of the mounting plate 2, and the front panel 3 uses a component with a mesh to improve the safety level of the equipment and the safety factor while ensuring the ventilation area; further, two groups of battery modules 4 arranged side by side are arranged above the bottom bracket frame 1, which are used to store power resources Source, and output of electric power resources in the subsequent use process to ensure the use effect, an upper cover plate 16 is arranged above the battery module 4, and the upper cover plate 16 is made of insulating material to ensure the safety performance of the battery pack body. A first air duct 5 is arranged between two adjacent battery modules 4, and a second air duct 6 and a third air duct 7 are arranged from left to right between the outer sides of the two groups of battery modules 4 and the plane where the outer wall of the bottom support frame 1 is located. Of course, according to the establishment of the battery pack body, the second air duct 6 and the third air duct 7 can also be constructed by utilizing the cabinet (or other battery modules 4 or the battery pack body) established on the outside of the battery pack body and the outer wall of the battery module 4, thereby improving the functionality of the device to a certain extent and making it convenient to use. And the device equipment is reasonably set up to meet different usage requirements in different scenarios. It is further described as follows: This design cancels the battery pack sheet metal shell and fan in the existing air-cooled battery pack, so that the battery pack module and the inner wall of the cabinet and the two side-by-side battery pack modules form an air duct for cooling the power core. In addition to the air duct between the two modules in the battery pack, each battery pack body contains three air ducts, and a uniquely designed three-duct layout is used to replace the single-duct exhaust of the traditional battery pack fan. The air outlet of the whole cabinet air conditioner is arranged at the front end of the battery pack, and the return air outlet of the whole cabinet air conditioner is arranged at the rear end of the battery pack. The air outlet of the air conditioner sends cold air to the front end of the battery pack, and the return air fan of the whole cabinet air conditioner is used to suck the cold air that has been sent to the front end of the battery pack through the three air ducts of the battery pack to the rear end of the battery pack and then return it to the air The cycle is completed by adjusting in this way. When the fan is eliminated, the increase in the cold air inlet area due to the increase in the air duct can also provide sufficient cooling for the battery cell. The design of three air ducts increases the cooling surface of the battery cell, making the temperature inside the battery cell more balanced. In addition, for the removed fan assembly, it reduces the power consumption of the components of the device itself and improves energy efficiency. The elimination of the sheet metal shell and the fan reduces the size of the battery pack and reduces the weight, thereby increasing the overall energy density of the battery pack. Furthermore, a plurality of hexagonal air inlets 21 are evenly distributed in the mounting plate 2 corresponding to the first air duct 5, which ensures the ventilation effect of the battery pack body to a certain extent, provides convenient conditions for realizing the cold cutting of the battery module 4, and improves the functionality of the device.A fire-fighting agent nozzle 8 is arranged on the mounting plate 2 above the air inlet 21, and a fire-fighting pipeline 81 is arranged outside the fire-fighting agent nozzle 8. Specifically, the fire-fighting pipeline 81 is connected to an external fire-fighting agent conveying device. The fire-fighting agent nozzle 8 and the fire-fighting pipeline 81 are configured to realize the spraying of the fire-fighting agent in the battery pack body, so that the fire-fighting agent can be sprayed to each battery cell, so as to better suppress the out-of-control battery cell and improve safety.

[0020] In the above process: by setting up three air ducts in the battery pack body, the cooling surface of the battery cell is increased, so that the temperature inside the battery cell is more balanced and the safety is improved. At the same time, the design also cancels the establishment of a conventional fan. On the one hand, it reduces the power consumption of the components of the equipment itself and improves the energy efficiency. On the other hand, it can reduce the weight of the battery pack body to a certain extent to meet the use requirements; through the fire-fighting agent nozzle 8, the fire-fighting agent is sprayed comprehensively, and the out-of-control battery cell is better suppressed, thereby improving the safety level; the device is reasonably designed, simple in structure, and easy to process, and it can effectively improve the air-cooling effect of the equipment, effectively increase the cooling area, ensure the air-cooling performance, and increase safety. At the same time, it reduces the overall structural weight of the battery pack, and to a certain extent reduces its own power consumption, improves energy efficiency, and has a good inhibitory effect on thermal runaway, effectively meeting the use requirements.

[0021] In order to further improve the cooling effect in the battery pack body, a spoiler assembly 15 is provided in the first air duct 5. The spoiler assembly 15 includes a placement frame 151 designed in a Y shape. An elliptical through hole 155 is provided at the geometric center of the placement frame 151. A connecting plate 1511 is provided at the lower end of the placement frame 151. First heat sinks 152 are provided on both sides of the placement frame 151. A second heat sink 153 is provided above the placement frame 151. Both end surfaces of the first heat sink 152 and the second heat sink 153 are provided with spoiler grooves 154 for spoiler function. The specific description is as follows: for the spoiler grooves 154 provided, , which makes the outer end surfaces of the first heat sink 152 and the second heat sink 153 form a wave shape, so that the cooling air entering through the vent has a certain turbulence effect when passing through the first heat sink 152 and the second heat sink 153 respectively, and relatively prolongs its residence time in the equipment components, thereby improving the cooling effect. The establishment of the through hole 155 ensures the fluidity during the air cooling process, and the functionality is strong. In addition, the ends of the first heat sink 152 are respectively against the two adjacent groups of battery modules 4, which provides convenient conditions for heat dissipation, that is, it brings the prerequisite for the heat to be carried when the air cools, thereby ensuring the functionality of use.

[0022] In order to ensure that the device has good performance, a battery management system module 9 is arranged on the inner side of one end of the mounting plate 2 close to the battery module 4, which conveniently controls the storage and output of power resources of the battery module 4 to meet the use requirements. Of course, the electrical component is an existing mature and conventional technical means. The specific working principle and working method can be effectively known to the technicians in the relevant technical field, and the details will not be repeated here. The mounting plate 2 corresponding to the battery management system module 9 is respectively provided with a positive electrode aviation plug 10 and a negative electrode aviation plug 11 on the left and right, the purpose of which is to prevent the operator from directly touching the battery pack body to ensure personal safety.

[0023] In order to further ensure that the battery pack body can play its good functionality, a series copper bus 12 is arranged at the rear end above the two groups of battery modules 4, which can connect the positive and negative poles of the two battery modules 4 set up side by side in series, providing convenient conditions for the storage and use of electric power resources. Furthermore, a positive output copper bus 13 is arranged above the front end of one battery module 4, and a negative output copper bus 14 is arranged above the front end of the other battery module 4, and the positive output copper bus 13 and the negative output copper bus 14 are respectively connected to the positive and negative poles. This design distinguishes the positive and negative poles of the battery pack body to facilitate subsequent power connection and use. Moreover, the use of the copper bus can effectively reduce energy loss and impedance, improve the efficiency of power transmission, and also reduce the load and energy consumption of the equipment to ensure the use needs.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An air-cooled battery pack for energy storage, comprising a battery pack body, characterized in that: The battery pack body includes a bottom support frame, a mounting plate is provided at the front end of the bottom support frame, a front panel is provided at the front end of the mounting plate, two groups of battery modules arranged side by side are provided above the bottom support frame, an upper cover plate is provided above the battery module, a first air duct is provided between two adjacent battery modules, a second air duct and a third air duct are provided from left to right between the outer sides of the two groups of battery modules and the plane where the outer wall of the bottom support frame is located, a plurality of air inlets in a hexagonal shape are evenly distributed in the mounting plate corresponding to the first air duct, a fire-fighting agent nozzle is provided on the mounting plate above the air inlet, and a fire-fighting pipeline is provided on the outer side of the fire-fighting agent nozzle.

2. The air-cooled battery pack for energy storage according to claim 1, characterized in that: A spoiler component is arranged in the first air duct, and the spoiler component includes a placement rack designed in a Y shape, a through hole designed in an elliptical shape is opened at the geometric center of the placement rack, a connecting plate is arranged at the lower end of the placement rack, first heat sinks are arranged on both sides of the placement rack, and a second heat sink is arranged above the placement rack, and spoiler grooves for spoiling the flow are opened on both end surfaces of the first heat sink and the second heat sink.

3. The air-cooled battery pack for energy storage according to claim 2, characterized in that: A battery management system module is arranged on the inner side of one end of the mounting plate close to the battery module, and a positive pole aviation plug and a negative pole aviation plug are arranged on the left and right sides of the mounting plate corresponding to the battery management system module, respectively.

4. The air-cooled battery pack for energy storage according to claim 3, characterized in that: A series copper bus is arranged at the rear end above the two groups of battery modules, a positive output copper bus is arranged above the front end of one battery module, and a negative output copper bus is arranged above the front end of the other battery module.

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