Energy storage power pack with heat dissipation function and use method thereof

Abstract

The invention provides an energy storage power pack with a heat dissipation function and a use method thereof, and belongs to the technical field of power battery energy storage. The problems that an existing energy storage power pack is uneven in heat exchange, low in efficiency and short in service life are solved. The battery pack comprises an outer shell, a battery module, a plurality of heat dissipation plates, a plurality of metal plates, a heat dissipation device and a cooling assembly, the battery module is arranged between two adjacent heat dissipation plates and metal plates, the metal plates are uniformly arranged in the outer shell, the heat dissipation plates are uniformly arranged in the outer shell, the metal plates are in contact with the battery module, and the heat dissipation device is in contact with the cooling assembly. The heat dissipation plate is of a closed structure and is hollow, the heat dissipation plate is filled with cooling liquid, the heat dissipation plate is connected with the input end of the cooling assembly, the output end of the cooling assembly is connected with the heat dissipation device, and the heat dissipation device is arranged on the outer side of the outer shell. The heat dissipation device is mainly used for power battery pack heat dissipation.

Description

Technical Field

[0001] The present invention belongs to the technical field of power battery energy storage, and in particular relates to an energy storage power pack with a heat dissipation function and a use method thereof. Background Art

[0002] Energy storage is an inevitable trend of future development. Due to the need for large-scale access of new energy to the grid, peak load shaving, voltage and frequency regulation, and development of microgrids, energy storage will play an indispensable role in the future power system. It is also a forward-looking technology to promote future energy development. The energy storage industry will play a huge role in new energy grid connection, electric vehicles, microgrids, home energy storage systems, and grid support services. The core component of energy storage is the lithium-ion power pack. Lithium-ion batteries are widely used as energy storage power packs because of their high power and energy density and long life.

[0003] Since lithium batteries have a large amount of energy storage and generate a lot of heat during the charging and discharging process, the use environment of energy storage stations is changeable, and the layout space of energy storage containers is limited, which can easily lead to poor heat dissipation conditions, resulting in heat accumulation in the power pack and temperature rise, which in turn affects the performance, life and working efficiency of energy storage lithium batteries, and even causes thermal runaway. Summary of the invention

[0004] In view of this, the present invention aims to provide an energy storage power pack with heat dissipation function and a method of using the same, so as to solve the problems of uneven heat exchange, low efficiency and short service life of the existing energy storage power pack.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A power pack with a heat dissipation function comprises an outer shell, a battery module, a plurality of heat sinks, a plurality of metal plates, a heat sink and a cooling assembly, wherein the battery module is arranged between two adjacent heat sinks and the metal plates, the plurality of metal plates are evenly arranged in the outer shell, the plurality of heat sinks are evenly arranged in the outer shell, the metal plates are in contact with the battery module, the heat sink is a closed structure and is hollow inside, the heat sink is filled with coolant, the heat sink is connected to an input end of the cooling assembly, the output end of the cooling assembly is connected to the heat sink, and the heat sink is arranged outside the outer shell.

[0007] Furthermore, the cooling assembly includes a liquid inlet branch, a liquid inlet pipeline, a water pump and a liquid outlet pipeline. Each heat sink is connected to a liquid inlet branch, and each liquid inlet branch is connected to the liquid inlet pipeline. One end of the water pump is connected to the liquid inlet pipeline, and the other end is connected to the liquid outlet pipeline. The liquid outlet pipeline is connected to the heat dissipation device.

[0008] Furthermore, the heat dissipation device includes a plurality of heat sinks arranged in parallel.

[0009] Furthermore, a plurality of fans are arranged above the heat sink, and the fans are installed on the outside of the outer shell through a connecting structure.

[0010] Furthermore, the metal plate is provided with a groove for mounting a heat sink.

[0011] Furthermore, the heat sink and the battery module are connected via thermally conductive adhesive.

[0012] Furthermore, the length of the heat sink is greater than the length of the battery module.

[0013] A method for using an energy storage power pack with a heat dissipation function comprises the following steps:

[0014] Step 1: The heat sink and the metal plate are in contact with the sides of the battery module, and the heat of the battery module is transferred to the heat sink and the metal plate;

[0015] Step 2: The heat is taken out to the heat sink through the coolant in the heat sink;

[0016] Step 3: Reduce the temperature of the coolant through the heat sink:

[0017] Step 4: The cooled coolant circulates into the heat sink to continue cooling the battery module. The reciprocating circulation of the coolant achieves continuous cooling of the battery module.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention places a plurality of metal sheets side by side inside the outer shell, and also arranges a plurality of heat sinks side by side inside the outer shell, and at the same time arranges the battery module between two adjacent heat sinks and the metal sheets, thereby increasing the heat dissipation area; specifically, the heat sink and the metal sheets directly contact the battery module, and the heat generated by the battery is transferred to the external heat dissipation device through the heat sink and the metal sheets via pipes, and the total heat dissipation area is greatly increased. Therefore, the heat dissipation capacity of the entire power pack is high and the temperature uniformity is good. The present invention can effectively improve the temperature uniformity of the battery cells and the safety of the power pack. During cooling, the temperature of the battery cells in the power pack is more uniform, thereby increasing the service life of the power pack and greatly reducing the risk of heat diffusion in the power pack, or even avoiding heat diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of an energy storage power pack with heat dissipation function according to the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of an energy storage power pack with heat dissipation function according to the present invention. Figure 2 .

[0023] 1-outer shell, 2-battery module, 3-metal plate, 4-heat sink, 5-liquid inlet branch pipe, 6-liquid inlet pipeline, 7-water pump, 8-liquid outlet pipeline, 9-heat sink, 10-fan. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0025] See also Figure 1-2 The present embodiment is described as an energy storage power pack with a heat dissipation function, characterized in that it includes an outer shell 1, a battery module 2, a plurality of heat dissipation plates 4, a plurality of metal plates 3, a heat dissipation device and a cooling assembly, wherein the battery module 2 is arranged between two adjacent heat dissipation plates 4 and the metal plates 3, a plurality of metal plates 3 are evenly arranged in the outer shell 1, a plurality of heat dissipation plates 4 are evenly arranged in the outer shell 1, the metal plates 3 are in contact with the battery module 2, the heat dissipation plates 4 are a closed structure and are hollow inside, the heat dissipation plates 4 are filled with a coolant, the heat dissipation plates 4 are connected to the input end of the cooling assembly, and the output end of the cooling assembly The end is connected to the heat dissipation device, which is arranged on the outside of the outer shell 1. The heat dissipation device includes a plurality of heat sinks 9 arranged in parallel. A plurality of fans 10 are arranged above the heat sink 9. The fans 10 are installed on the outside of the outer shell 1 through a connecting structure. The cooling component includes a liquid inlet branch pipe 5, a liquid inlet pipeline 6, a water pump 7 and a liquid outlet pipeline 8. Each heat sink 4 is connected to a liquid inlet branch pipe 5, and each liquid inlet branch pipe 5 is connected to the liquid inlet pipeline 6. One end of the water pump 7 is connected to the liquid inlet pipeline 6, and the other end is connected to the liquid outlet pipeline 8. The liquid outlet pipeline 8 is connected to the heat dissipation device.

[0026] A plurality of heat sinks 4 are arranged side by side inside the outer shell 1, and the battery module 2 is arranged between two adjacent heat sinks 4 and the metal sheet 3, thereby increasing the heat dissipation area. Specifically, the heat sink 4, the metal sheet 3 and the side contact cooling of the battery module 2 are performed, and the heat is brought out to the heat dissipation device by the coolant in the heat sink 4 to reduce the temperature of the coolant. At the same time, the insulated cold enters the heat dissipation device through the liquid inlet pipe 6, and the heat sink 9 in the heat dissipation device dissipates heat, so the total heat dissipation area is greatly increased, and the heat dissipation position is omnidirectional, so the heat dissipation capacity of the entire power pack is high and the temperature uniformity is good. The present invention can effectively improve the temperature uniformity of the battery cells and the safety of the power pack. During cooling, the temperature of the battery cells in the power pack is more uniform, thereby increasing the service life of the power pack, greatly reducing the risk of thermal diffusion of the power pack, and even avoiding thermal diffusion, thereby improving the safety of the energy storage power pack and the energy storage station.

[0027] Furthermore, the heat dissipation device includes a plurality of heat sinks 9 arranged in parallel, a plurality of fans 10 are arranged above the heat sinks 9, and the fans 10 are installed on the outside of the outer shell 1 through a connecting structure. The plurality of heat sinks 9 are arranged side by side in parallel, and the pipeline repeatedly passes through the heat dissipation device. The fans 10 are arranged side by side in parallel above the heat dissipation device, and the fans continuously dissipate heat. The plurality of heat sinks are connected to the liquid inlet pipeline in parallel.

[0028] Furthermore, the liquid inlet pipeline 6 and the liquid outlet pipeline 8 are arranged on the outer wall of the outer shell 1 .

[0029] Furthermore, the liquid inlet branch pipe 5 and the liquid inlet pipeline 6 are placed on the same side of the outer shell 1, the heat sink 4 is provided with a first opening, the liquid inlet pipeline 6 is connected to the first opening, the liquid outlet branch pipe and the liquid outlet pipeline 8 are placed on one side of the outer shell 1, the heat sink 9 is provided with a second opening, and the liquid outlet branch pipe is connected to the second opening.

[0030] Furthermore, a mounting notch is provided on the upper side of the metal sheet 3 , and the end of the heat sink 4 is mounted in the outer shell 1 corresponding to the mounting notch.

[0031] Furthermore, the heat sink 4 and the battery module 2 are connected via a thermally conductive adhesive.

[0032] Furthermore, the length of the heat dissipation plate 4 is greater than the length of the battery module 2 .

[0033] Furthermore, a method for using an energy storage power pack with a heat dissipation function comprises the following steps:

[0034] Step 1: The heat sink 4 and the metal plate 3 are in contact with the side of the battery module 2, and the heat of the battery module 2 is transferred to the heat sink 4 and the metal plate 3;

[0035] Step 2: The heat is taken out to the heat dissipation device through the coolant in the heat dissipation plate 4;

[0036] Step 3: Reduce the temperature of the coolant through the heat sink:

[0037] Step 4: The cooled coolant circulates into the heat sink 4 to continue cooling the battery module 2 . The reciprocating circulation of the coolant achieves continuous cooling of the battery module 2 .

[0038] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. An energy storage power pack with heat dissipation function, characterized in that: The invention comprises an outer shell (1), a battery module (2), a plurality of heat sinks (4), a plurality of metal plates (3), a heat sink and a cooling assembly, wherein the battery module (2) is arranged between two adjacent heat sinks (4) and metal plates (3), the plurality of metal plates (3) are evenly arranged in the outer shell (1), the plurality of heat sinks (4) are evenly arranged in the outer shell (1), the metal plates (3) are in contact with the battery module (2), the heat sink (4) is a closed structure and is hollow inside, the heat sink (4) is filled with coolant, the heat sink (4) is connected to the input end of the cooling assembly, the output end of the cooling assembly is connected to the heat sink, and the heat sink is arranged outside the outer shell (1).

2. The energy storage power pack with heat dissipation function according to claim 1, characterized in that: The cooling assembly comprises a liquid inlet branch pipe (5), a liquid inlet pipeline (6), a water pump (7) and a liquid outlet pipeline (8); each heat sink (4) is connected to a liquid inlet branch pipe (5); each liquid inlet branch pipe (5) is connected to the liquid inlet pipeline (6); one end of the water pump (7) is connected to the liquid inlet pipeline (6) and the other end is connected to the liquid outlet pipeline (8); the liquid outlet pipeline (8) is connected to the heat dissipation device.

3. The energy storage power pack with heat dissipation function according to claim 2, characterized in that: The heat dissipation device comprises a plurality of heat dissipation fins (9) arranged in parallel.

4. The energy storage power pack with heat dissipation function according to claim 3, characterized in that: A plurality of fans (10) are arranged above the heat sink (9), and the fans (10) are installed on the outside of the outer shell (1) via a connecting structure.

5. The energy storage power pack with heat dissipation function according to claim 1, characterized in that: The metal plate (3) is provided with a groove for mounting a heat sink (4).

6. The energy storage power pack with heat dissipation function according to claim 1, characterized in that: The heat dissipation plate (4) and the battery module (2) are connected via heat-conducting glue.

7. The energy storage power pack with heat dissipation function according to claim 1, characterized in that: The length of the heat dissipation plate (4) is greater than the length of the battery module (2).

8. A method for using the energy storage power pack with heat dissipation function as claimed in any one of claims 1 to 7, characterized in that: It includes the following steps: Step 1: The heat dissipation plate (4) and the metal plate (3) are in contact with the side of the battery module (2), and the heat of the battery module (2) is transferred to the heat dissipation plate (4) and the metal plate (3); Step 2: The heat is taken out to the heat dissipation device through the coolant in the heat dissipation plate (4); Step 3: Reduce the temperature of the coolant through the heat sink: Step 4: The cooled coolant circulates into the heat sink (4) to continue cooling the battery module (2). The reciprocating circulation of the coolant achieves continuous cooling of the battery module (2).

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