Battery module mounting assembly in energy storage system

Abstract

The utility model discloses a battery module mounting assembly in an energy storage system, which comprises a box body, lining plates, a limiting plate and a protection control panel, the box body comprises a shell and a cover body, the limiting plate comprises a pressing plate and a top plate, the pressing plate is placed at a top opening of the shell and is contacted with the top of a battery cell, and the top plate is arranged at an opening at one side of the shell and is contacted with the lining plate at the outermost layer; the cover body is buckled on the shell, the protection control panel is arranged on the top plate, the charging and discharging socket and the heat dissipation window are arranged on the cover plate, the lining plate is a hollow plate, and the shell and the pressing plate are provided with ventilation holes correspondingly communicated with a hollow channel in the lining plate; the lining plate is improved and matched with the ventilation holes in the box body, air enters the hollow lining plate through the ventilation holes, flows in the hollow lining plate and is finally discharged through the heat dissipation window under the action of the fan of the heat dissipation window, and the lining plate is located between the battery cells, so that each battery cell is effectively cooled, and the service life of the battery cell is prolonged. The problem of uneven heat dissipation in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a battery module mounting assembly in an energy storage system. Background Technology

[0002] Energy storage systems include battery modules, BMS, PCS, EMS, cooling systems, fire protection systems, monitoring systems, and enclosures. In existing technologies, multiple battery modules are typically connected in series and placed inside an enclosure. These connected modules then communicate with the BMS, PCS, and EMS systems, and operate normally with the assistance of the cooling and fire protection systems. Each battery module consists of multiple cells separated by insulating sheets and fixed within the module enclosure. This assembly is completed with the help of a protection control board and a cooling system. Existing cooling systems include air cooling and liquid cooling. Air cooling is more widely used due to its simpler structure and lower cost compared to liquid cooling. However, in existing battery modules, because the cells are fixed close together, cooling air can only flow from the outer side of the cells to cool them. This results in poor cooling for cells in the middle, easily causing localized temperature increases and creating safety hazards. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing air-cooling effect of battery cells is not good, which easily causes local temperature rise.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A battery module mounting assembly in an energy storage system includes a housing, a liner, a limiting plate, and a protection control board. At least two liners isolate battery cells placed inside the housing from each other. The protection control board is located inside the housing to control the charging and discharging of the battery cells. A charging / discharging port is located on the housing. The housing has a heat dissipation window. The housing comprises a shell and a cover. The cover is L-shaped, and the shell is a rectangular structure with openings on adjacent sides. The limiting plate includes a pressure plate and a top plate. The pressure plate is placed at the top opening of the shell and contacts the top of the battery cell. The top plate is located at one side opening of the shell and contacts the outermost liner. The pressure plate, top plate, and shell press and fix the liner and battery cell within the shell. The cover is fastened to the shell to close the two openings on the shell. The protection control board is located within the space formed by the pressure plate, cover, and shell. The charging / discharging port and heat dissipation window are located on the cover. The liner is a hollow sheet material. Ventilation holes corresponding to and communicating with the hollow channels on the liner are provided on the shell and pressure plate.

[0006] Furthermore, the liner includes a front wall panel, a rear wall panel, and support blocks. The front wall panel and the rear wall panel are parallel to each other and are connected by support blocks. The support blocks are not connected to each other, forming a hollow channel between the front wall panel and the rear wall panel.

[0007] Furthermore, the ventilation hole is a single strip-shaped hole or a plurality of circular holes arranged in a strip shape.

[0008] Furthermore, the pressure plate has a Z-shaped cross-section, with its top resting on the top opening of the housing and its bottom contacting the top of the battery cell. A folding plate is provided on the top plate, which rests on the bottom of the pressure plate. The folding plate, the top and bottom of the pressure plate, and the pressure plate are provided with connecting through holes.

[0009] Furthermore, wiring boards are provided on the bottom of the pressure plate and the folding plate, and the wiring boards correspond vertically to the longitudinally arranged liner and press against the top of the battery cells on both sides of the liner.

[0010] Furthermore, the top plate is provided with a mounting bracket for installing the protection control board, so that there is a gap between the protection control board and the top plate, and the protection control board corresponds to the ventilation holes on the top plate.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This application improves the liner and, in conjunction with the ventilation holes on the housing, allows air to enter the hollow liner through the ventilation holes under the action of the exhaust fan, flow within the hollow liner, and finally be discharged through the ventilation window. Since the liner is located between the cells, it effectively cools each cell, solving the problem of uneven heat dissipation in the prior art.

[0013] 2. This application uses a pressure plate, a cover plate, and a housing to fix the battery cell, control the expansion size of the battery cell, and extend its service life. The pressure plate and the top plate are fixed to the housing with screws, and the top plate is placed on the cover plate and fixedly connected with screws to ensure connection stability.

[0014] 3. In this application, the ventilation hole is a single strip-shaped hole or multiple circular holes arranged in a strip shape. When the ventilation hole is a single strip-shaped hole, the size of the strip-shaped hole is smaller than the side dimension of the liner plate to prevent the liner plate from passing through the strip-shaped hole. In addition, the width of the strip-shaped hole cannot be too small to prevent the liner plate from shifting due to the displacement of the fixed battery cell or the expansion of the battery cell. The strip-shaped hole can still communicate with the hollow channel of the liner plate. However, when the ventilation hole is multiple circular holes arranged in a strip shape, there is no such problem. Therefore, the ventilation hole is preferably multiple circular holes arranged in a strip shape.

[0015] 4. In this application, the protection control board has a gap between the mounting bracket and the top plate, which allows the air flowing from the ventilation holes on the top plate to blow directly onto the protection control board, thereby cooling the protection control board.

[0016] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only four of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ;

[0020] Figure 3 Schematic diagram of the liner plate Figure 1 ;

[0021] Figure 4 Schematic diagram of the liner plate Figure 2 ;

[0022] Figure 5 Assembly for this application Figure 1 ;

[0023] Figure 6 Assembly for this application Figure 2 ;

[0024] Figure 7 Assembly for this application Figure 3 ;

[0025] Figure 8 Assembly for this application Figure 4 ;

[0026] Figure 9 Assembly for this application Figure 5 .

[0027] In the diagram: 1-shell, 2-cover, 3-pressure plate, 4-top plate, 5-liner, 6-heat dissipation window, 7-charging / discharging port, 8-ventilation hole, 9-connection through hole, 10-wiring board, 11-rib, 12-mounting bracket, 13-folding plate;

[0028] 51-Front wall panel, 52-Rear wall panel, 53-Support block. Detailed Implementation

[0029] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information. Example 1

[0032] like Figure 1-9 As shown, a battery module mounting assembly in an energy storage system is disclosed, including a housing, a liner 5, a limiting plate, and a protection control board. At least two liners 5 isolate the battery cells placed inside the housing from each other. The protection control board is located inside the housing to control the charging and discharging of the battery cells. A charging / discharging port 7 is located on the housing. The housing has a heat dissipation window 6. The housing includes a shell 1 and a cover 2. The cover 2 is L-shaped. The shell 1 is a rectangular structure with openings on adjacent sides. The limiting plate includes a pressure plate 3 and a top plate 4. The pressure plate 3 is placed at the top opening of the shell 1 and contacts the top of the battery cell. The top plate 4 is located at one side opening of the shell 1 and contacts the outermost liner 5. The pressure plate 3, the top plate 4, and the shell 1 hold the liner 5 and the battery cell together. The core is pressed and fixed inside the housing 1. The cover 2 is fastened to the housing 1 to seal the two openings on the housing 1. The protection control board is set in the space formed by the pressure plate 3, the cover 2 and the housing 1. The charging and discharging port 7 and the heat dissipation window 6 are set on the cover plate. The liner 5 is a hollow plate. The housing 1 and the pressure plate 3 are provided with ventilation holes 8 that correspond to and communicate with the hollow channels on the liner 5. With the help of the ventilation holes 8 on the housing, the air is forced to enter the hollow liner 5 through the ventilation holes 8 under the action of the fan at the heat dissipation window 6. The air flows in the hollow liner 5 and is finally discharged through the heat dissipation window 6. Since the liner 5 is between the cells, it can effectively cool each cell and solve the problem of uneven heat dissipation in the prior art.

[0033] The liner 5 includes a front wall panel 51, a rear wall panel 52, and a support block 53. The front wall panel 51 and the rear wall panel 52 are parallel to each other and are supported and connected by the support block 53. The support blocks 53 are not connected to each other, forming a hollow channel between the front wall panel 51 and the rear wall panel 52. The distance between the front wall panel 51 and the rear wall panel 52 forms an air circulation channel. The support block 53 supports the front wall panel 51 and the rear wall panel 52. The air circulation channel corresponds to the ventilation hole 8. Outside air enters the ventilation channel through the ventilation hole 8, and then the air enters the space formed by the shell 1 and the cover 2 through the ventilation channel. Finally, it is discharged to the outside through the heat dissipation window 6, carrying away the heat of the battery cell.

[0034] The pressure plate 3 has a Z-shaped cross-section, with its top resting on the top opening of the housing 1 and its bottom contacting the top of the battery cell. A folding plate 13 rests on the bottom of the pressure plate 3 on the top plate 4. Connecting through holes 9 are provided on the folding plate 13, the top and bottom of the pressure plate 3, and the pressure plate 3 itself. A wiring board 10 is provided on the bottom of the pressure plate 3 and on the folding plate 13. The wiring board 10 corresponds vertically to the longitudinally arranged liner 5 and presses against the top of the battery cell on both sides of the liner 5. Connecting through holes 9 are also provided on the wiring board 10, facilitating connection with screws. The battery cell is fixed by the pressure plate 3, the cover plate, the wiring board 10, and the housing 1, controlling the battery cell's expansion size and extending its service life. The pressure plate 3 and the top plate 4 are fixed to the housing 1 with screws, and the top plate 4 rests on the cover plate and is fixedly connected with screws to ensure connection stability. Two ribs 11 are provided on the wiring board 10, facilitating the placement of the wire harness within the groove formed by the two ribs 11. The ribs 11 increase the strength of the wiring board 10. Example 2

[0035] like Figure 1-9 As shown, this embodiment is obtained by describing the technical features such as the ventilation hole 8 in detail based on the first embodiment. The other technical features are the same as those in the first embodiment, and the similarities will not be repeated here. The difference between this embodiment and the first embodiment is that the ventilation hole 8 is a strip-shaped hole or multiple circular holes that are distributed in a strip shape.

[0036] In this embodiment, the ventilation hole 8 is a single strip-shaped hole or a plurality of circular holes arranged in a strip shape. When the ventilation hole 8 is a single strip-shaped hole, the size of the strip-shaped hole is smaller than the side dimension of the liner plate 5 to prevent the liner plate 5 from passing through the strip-shaped hole. The width of the strip-shaped hole cannot be too small to prevent the liner plate 5 from shifting due to the displacement of the fixed battery cell or the expansion of the battery cell. The strip-shaped hole can still communicate with the hollow channel of the liner plate 5. However, when the ventilation hole 8 is a plurality of circular holes arranged in a strip shape, there is no such problem. Therefore, the ventilation hole 8 is preferably a plurality of circular holes arranged in a strip shape. Example 3

[0037] like Figure 5-9As shown, this embodiment is obtained by adding technical features such as mounting bracket 12 on the basis of embodiment 2. The remaining technical features are the same as those in embodiment 2. The similarities will not be repeated here. The difference between this embodiment and embodiment 2 is that: a mounting bracket 12 for mounting the protection control board is provided on the top plate 4, so that there is a gap between the protection control board and the top plate 4, and the protection control board corresponds to the ventilation hole 8 on the top plate 4.

[0038] In this embodiment, the protection control board is fixed to the mounting bracket 12 with screws to protect the battery cells from overcharging and over-discharging. There is a gap between the protection control board and the top plate 4 through the mounting bracket 12, which allows the air flowing out of the ventilation holes 8 on the top plate 4 to flow directly onto the protection control board and cool it down.

[0039] The overall usage process formed by the above embodiments is as follows: the battery cells are neatly placed in two rows inside the housing 1, the liner 5 is placed between the battery cells and / or between the battery cells and the housing 1, then the pressure plate 3 is placed on the top opening of the housing 1, and the pressure plate 3 is fixed to the housing 1 with screws, the top plate 4 is placed on the outermost liner 5, the battery cell clamping opening is fixed to the housing 1 and the pressure plate 3 with screws, finally the wiring board 10 is fixed to the pressure plate 3 and the top plate 4 with screws, the protection control board is fixed to the mounting bracket 12 with screws, after the wiring harness is laid along the wiring board 10, the cover 2 is placed on the housing 1 and connected with screws to complete the assembly of the battery module.

[0040] When the fan at the heat dissipation window 6 is running, external air enters the ventilation channel from the outside air through the ventilation hole 8, and then the air enters the space formed by the housing 1 and the cover 2 through the ventilation channel, and finally is discharged to the outside through the heat dissipation window 6, carrying away the heat of the battery cell.

[0041] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A battery module mounting assembly in an energy storage system, comprising a housing, liners, limiting plates, and a protection control board, wherein at least two liners isolate battery cells placed inside the housing from each other, the protection control board is disposed inside the housing to control the charging and discharging of the battery cells, charging and discharging ports are disposed on the housing, and the housing is provided with heat dissipation windows, characterized in that: The housing includes a shell and a cover. The cover is L-shaped, and the shell is a rectangular structure with openings on both adjacent sides. The limiting plate includes a pressure plate and a top plate. The pressure plate is placed at the top opening of the shell and contacts the top of the battery cell. The top plate is set at one side opening of the shell and contacts the outermost liner. The liner and battery cell are pressed and fixed inside the shell by the pressure plate, the top plate, and the shell. The cover is fastened to the shell to close the two openings on the shell. The protection control plate is set in the space formed by the pressure plate, the cover, and the shell. The charging and discharging port and the heat dissipation window are set on the cover. The liner is a hollow plate. The shell and the pressure plate are provided with ventilation holes that correspond to and communicate with the hollow channels on the liner.

2. The battery module mounting assembly in an energy storage system according to claim 1, characterized in that: The liner includes a front wall panel, a rear wall panel, and support blocks. The front wall panel and the rear wall panel are parallel to each other and are connected by support blocks. The support blocks are not connected to each other, forming a hollow channel between the front wall panel and the rear wall panel.

3. The battery module mounting assembly in an energy storage system according to claim 2, characterized in that: The ventilation hole is a single strip-shaped hole or multiple circular holes arranged in a strip shape.

4. A battery module mounting assembly in an energy storage system according to claim 3, characterized in that: The pressure plate has a Z-shaped cross-section, with its top resting on the top opening of the housing and its bottom contacting the top of the battery cell. A folding plate is provided on the top plate, resting on the bottom of the pressure plate. The folding plate, the top and bottom of the pressure plate, and the pressure plate are provided with connecting through holes.

5. A battery module mounting assembly in an energy storage system according to claim 4, characterized in that: Wiring boards are provided on the bottom of the pressure plate and the folding plate. The wiring boards correspond vertically to the longitudinally arranged liner and press against the top of the battery cells on both sides of the liner.

6. A battery module mounting assembly in an energy storage system according to claim 4, characterized in that: The top plate is provided with a mounting bracket for installing the protection control board, so that there is a gap between the protection control board and the top plate, and the protection control board corresponds to the ventilation holes on the top plate.

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