Air-cooled energy storage battery cluster

Abstract

The utility model provides an air-cooled energy storage battery cluster which comprises a battery rack, a battery Pack high-voltage box, an inverter and heat insulation cotton, the battery Pack, the high-voltage box and the inverter are sequentially and fixedly placed on the battery rack from top to bottom, side heat dissipation holes are formed in the two ends of the battery Pack, and a vertical beam air channel on the back of the battery rack is communicated with the side heat dissipation holes and an air outlet in the front end of the battery Pack; an upper sealing plate, a side sealing plate and a local sealing plate are correspondingly arranged on the top and the side surface of the battery rack; and the heat insulation cotton is arranged on a local sealing plate on the side surface of the inverter 4. By adding the sealing plate on the battery rack, the heat dissipation efficiency of the direct-current part of the battery cluster can be improved, and the problem of simultaneous heat dissipation of the direct-current side and the alternating-current side of the battery cluster is solved; through the modular design, the inverter solves the wiring problem at the electrical wiring part, and the air duct sealing performance of the inverter can be easily realized by embedding the rubber gasket at the opening of the heat dissipation air duct of the inverter, so that the inverter has a good application prospect in the field of energy storage.

Description

Technical Field

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

[0002] With the rapid development of electric vehicles, the cost of lithium batteries has gradually decreased and their service life has gradually increased. The use of photovoltaic systems to store excess energy in batteries, power the loads with batteries at night or when there is insufficient light, or to use peak-valley price arbitrage and other application models are gradually being promoted. The battery cluster is an important part of the energy storage container. The battery cluster uses modular design to achieve rapid integration and rapid commissioning of battery packs, real-time data collection, status monitoring, control and protection, and high safety and reliability.

[0003] The battery cluster is generally in the form of battery rack + battery pack + high-voltage box. The temperature control system mainly conducts hot and cold air through the fan and air duct on the battery pack. On the one hand, the existing technology has a relatively simple module for the battery rack layout. The battery pack + high-voltage box form requires the entire system cluster to be connected before connecting to the inverter. The wiring will be very dense and has high requirements for the wiring at the bottom of the container. On the other hand, after the pack air duct design is complete, the electrical compartment in the container needs to make an independent air duct for the inverter, which will increase the cost. Summary of the invention

[0004] Purpose of the invention: In view of the deficiencies in the prior art, the purpose of the present invention is to provide an air-cooled energy storage battery cluster.

[0005] Technical solution: The utility model provides an air-cooled energy storage battery cluster, including a battery rack, a battery pack, a high-voltage box, an inverter, and thermal insulation cotton. The battery pack, the high-voltage box, and the inverter are fixedly placed on the battery rack in sequence from top to bottom. Side heat dissipation holes are provided at both ends of the battery pack. The back vertical beam air duct of the battery rack is connected with the side heat dissipation holes and the front air outlet of the battery pack; the top and sides of the battery rack are provided with corresponding upper sealing plates, side sealing plates, and local sealing plates to ensure that the battery pack has sufficient air-cooling flow space when the system is working, thereby increasing the air intake area of ​​the air conditioner.

[0006] The inverter is arranged at the bottom of the battery rack, and the heat insulation cotton is arranged on the local sealing plate on the side of the inverter, so as to create an independent space for the inverter to dissipate heat and will not affect the working state of the high-voltage box above.

[0007] The high-voltage box is set in the upper space of the inverter, so that the power and communication harnesses drawn from the high-voltage box can be directly connected, without passing through the high-voltage box and then through the container cable duct. When making an independent air duct for the inverter, in order to ensure the air duct sealing, it can be easily achieved by simply opening an additional hole and embedding a rubber gasket.

[0008] Furthermore, the battery pack, high-voltage box and inverter are fixed to the battery rack through rivet nuts and bolts on the hanging ears.

[0009] Furthermore, the battery rack is provided with a limiting assembly for guiding the installation and limiting the fixation of the battery pack, so as to improve the stability of the battery pack and reduce uncontrollable swinging and collision during transportation.

[0010] Furthermore, a fan is provided at the front air outlet of the battery pack for sucking air, and cold air from the air conditioner enters from the vertical beam air duct on the back of the battery rack, is sucked in by the fan at the front end of the battery pack, enters the side heat dissipation holes, is drawn out from the front air outlet of the battery pack, and then enters through the hot air suction port of the air conditioner, thereby realizing temperature control and regulation of the battery pack part and achieving the purpose of heat exchange.

[0011] Furthermore, a crossbeam air duct is provided on the back crossbeam of the battery rack and is connected and coordinated with the internal air duct to ensure the integrity and sealing of the internal air duct.

[0012] Furthermore, the battery pack is provided with multiple groups, and the positive and negative connectors on the battery pack are connected in series with cables and then connected to the high-voltage box to achieve electrical connection; the BMS slave controllers at the front end of each battery pack are connected together by using a low-voltage wiring harness, and finally connected to the high-voltage box.

[0013] Furthermore, the inverter is provided with a heat dissipation duct independent of the battery pack, and the two do not interfere with each other, thereby improving the efficiency of air cooling and heat dissipation. The air duct sealing of the inverter can be easily achieved by embedding a rubber gasket at the opening of the inverter heat dissipation duct.

[0014] Working principle: The utility model is provided with an air duct on the vertical beam at the back of the battery rack. The cold air from the air conditioner is sent out through the top of the battery rack and passes through the back of the battery pack. Then, it enters the side heat dissipation holes of the battery pack through the air duct of the vertical beam at the back of the battery rack 1, and contacts with the battery cells to realize heat exchange. At the same time, the battery rack provides an independent space for the heat dissipation of the DC part of the battery pack, which is isolated from the inverter air duct and does not interfere with each other, thereby improving the efficiency of air cooling and heat dissipation.

[0015] Beneficial effects: Compared with the prior art, the utility model has the following advantages: by adding a cover plate to the battery rack, the heat dissipation efficiency of the DC part of the battery cluster can be improved, and the problem of simultaneous heat dissipation of the DC and AC sides of the battery cluster is solved through a unique structural design; through a modular design, the inverter solves the problems of difficult wiring and high cable costs in the electrical wiring part, and embedding a rubber gasket in the opening of the inverter heat dissipation duct can easily achieve the duct sealing of the inverter; at the same time, the efficiency is greatly improved in terms of installation, and it has a good application prospect in the field of energy storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the air-cooled energy storage battery cluster provided by the utility model;

[0017] Figure 2 A schematic diagram of the air-cooled energy storage battery cluster framework structure provided by the utility model;

[0018] Figure 3 A front view of a battery pack in an air-cooled energy storage battery cluster provided by the utility model;

[0019] Figure 4 A side view of a battery pack in an air-cooled energy storage battery cluster provided by the utility model. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1-Figure 4 As shown, the utility model provides an air-cooled energy storage battery cluster, including a battery rack 1, a battery pack 2, a high-voltage box 3, an inverter 4, and a heat insulation cotton 5. The battery pack 2, the high-voltage box 3, and the inverter 4 are fixedly placed on the battery rack 1 from top to bottom, and the battery pack 2, the high-voltage box 3, and the inverter 4 are fixed to the battery rack 1 by the rivet nuts and bolts on the battery rack 1 through the hanging ears 201. The inverter 4 is arranged at the bottom of the battery rack 1, and the two ends of the battery pack 2 are provided with side heat dissipation holes 202. The back vertical beam air duct of the battery rack 1 is connected with the side heat dissipation holes 202 and the front air outlet of the battery pack 2; the top and side of the battery rack 1 are provided with corresponding upper sealing plates 101, side sealing plates 102, and partial sealing plates 103, so as to ensure that the battery pack 2 has sufficient air-cooling flow space when the system is working, and increase the air intake area of ​​the air conditioner. The heat insulation cotton 5 is arranged on the partial sealing plate 103 on the side of the inverter 4, creating an independent space for the inverter to dissipate heat, and will not affect the working state of the high-voltage box 3 above.

[0022] The high-voltage box 3 is arranged in the upper space of the inverter 4, so that the power and communication harnesses led out of the high-voltage box can be directly connected without passing through the high-voltage box 3 and then through the container cable duct.

[0023] The battery rack 1 is provided with a limiting assembly for guiding the installation and limiting the fixing of the battery Pack 2, so as to improve the stability of the battery Pack 2 and reduce uncontrollable swinging and collision during transportation.

[0024] The front air outlet of the battery Pack2 is provided with a fan 203 for sucking air. The cold air of the air conditioner enters from the vertical beam air duct on the back of the battery rack, and is sucked in by the fan 203 at the front end of the battery Pack2. The cold air enters the side heat dissipation holes 202, is drawn out from the front air outlet of the battery Pack2, and then enters through the hot air suction port of the air conditioner, thereby realizing temperature control and regulation of the battery Pack2 part and achieving the purpose of heat exchange.

[0025] A crossbeam air duct is provided on the back crossbeam of the battery rack 1 and is connected with the internal air duct to ensure the integrity and sealing of the internal air duct.

[0026] The battery Pack2 is provided with multiple groups, and the positive and negative connectors 204 on the battery Pack2 are connected in series with cables and then connected to the high-voltage box 3 to achieve electrical connection; the BMS slave controller 205 at the front end of each battery Pack2 is connected together by using a low-voltage wiring harness, and finally connected to the high-voltage box 3.

[0027] The inverter 4 is provided with a heat dissipation duct independent of the battery Pack 2, and the two do not interfere with each other, thereby improving the efficiency of air cooling and heat dissipation. The air duct sealing of the inverter 4 can be easily achieved by embedding a rubber gasket in the opening of the heat dissipation duct of the inverter 4.

[0028] During installation and fixing, first weld the battery rack 1 to the bottom surface of the container overhead layer, then install the battery Pack 2, high-voltage box 3 and inverter 3, and fix the reserved holes of the module on the battery rack 1 with bolts, and then use the positive and negative cables to connect each battery Pack 2, and then use the low-voltage wiring harness to connect each BMS slave control 205, and then pass the DC and communication wiring harness through the reserved holes on the air duct outlet of inverter 4 to connect to inverter 4.

[0029] The utility model is provided with an air duct on the back vertical beam of the battery rack. The air-conditioned cold air is sent out through the top of the battery rack and passes through the back of the battery pack. Then, it enters the side heat dissipation holes of the battery pack through the air duct of the back vertical beam of the battery rack 1, and contacts with the battery cells to achieve heat exchange. At the same time, the battery rack provides an independent space for the heat dissipation of the DC part of the battery pack, which is isolated from the inverter air duct and does not interfere with each other, thereby improving the efficiency of air cooling and heat dissipation. According to the arrangement of the battery pack 2, the setting of the high-voltage box 3 and the inverter 4, this modular inverter form greatly saves system costs. The air-cooled energy storage battery cluster provided by the utility model has a good application prospect in the field of energy storage.

Claims

1. An air-cooled energy storage battery cluster, characterized in that: The invention comprises a battery rack (1), a battery pack (2), a high-voltage box (3), an inverter (4), and heat-insulating cotton (5); the battery pack (2), the high-voltage box (3), and the inverter (4) are fixedly placed on the battery rack (1) in order from top to bottom; both ends of the battery pack (2) are provided with side heat dissipation holes (202); the back vertical beam air duct of the battery rack (1) is connected with the side heat dissipation holes (202) and the front air outlet of the battery pack (2); the top and side of the battery rack (1) are provided with corresponding upper sealing plates (101), side sealing plates (102), and partial sealing plates (103); the inverter (4) is arranged at the bottom of the battery rack (1), and the heat-insulating cotton (5) is arranged on the partial sealing plate (103) on the side of the inverter (4).

2. The air-cooled energy storage battery cluster according to claim 1, characterized in that: The battery pack (2), the high-voltage box (3) and the inverter (4) are fixed to the battery rack (1) via the hanging ears (201) and the rivet nuts and bolts.

3. The air-cooled energy storage battery cluster according to claim 1, characterized in that: The battery rack (1) is provided with a limiting assembly for guiding the installation and limiting and fixing the battery pack (2).

4. The air-cooled energy storage battery cluster according to claim 1, characterized in that: The front air outlet of the battery pack (2) is provided with a fan (203) for sucking air.

5. The air-cooled energy storage battery cluster according to claim 1, characterized in that: A crossbeam air duct is provided on the back crossbeam of the battery rack (1) and is in communication with the internal air duct, thereby ensuring the integrity and sealing of the internal air duct.

6. The air-cooled energy storage battery cluster according to claim 1, characterized in that: The battery pack (2) is provided with a plurality of groups, and the positive and negative electrode connectors (204) on the battery pack (2) are connected in series using cables and then connected to the high-voltage box (3) to achieve electrical connection; the BMS slave controller (205) at the front end of each battery pack (2) is connected together by using a low-voltage wiring harness, and finally connected to the high-voltage box (3).

7. The air-cooled energy storage battery cluster according to claim 1, characterized in that: The inverter (4) is provided with a heat dissipation duct independent of the battery pack (2).

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