CN218525635U - A combined cooling system device on an energy storage power system module - Google Patents

Abstract

The utility model proposes a combined cooling system device on an energy storage power supply system module, including: a box body, a cooling device, a fan, and a battery module, and two battery modules are installed on the side of the box body along the length direction of the box body. Inside, and located on both sides of the box, the cooling device is located between the two battery modules, and the cooling device is sealed and connected with the two battery modules and the box to form a ring-shaped guide perpendicular to the battery module. Flow cavity, the fan is installed on the outer wall of one end of the box, and the fan is connected to the flow guide cavity, and there are ventilation holes on both sides of the box. Driven by the fan, the cold air enters the inside of the box from the ventilation hole , through the battery module to the guide cavity and then discharged from the fan. The utility model can improve the fluidity of the air inside the energy storage power supply module, the uniformity of heat dissipation and the large-area heat exchange efficiency of the electric core.

Description

A combined cooling system device on an energy storage power system module

technical field

The utility model relates to the technical field of battery module heat dissipation, in particular to a combined cooling system device on an energy storage power supply system module.

Background technique

In recent years, with the rapid development of the energy storage industry, energy storage power system modules (batteries) have been more and more widely used. Among them, the energy storage power system module is composed of multiple batteries and assembled in a closed battery cluster space. During the charging and discharging process of the batteries, the energy storage power system module itself will generate a certain temperature, and the temperature will be Varies with work conditions.

However, the energy storage power system module itself has extremely high requirements on the uniformity of the ambient temperature. It is understood that after exceeding the predetermined tolerance range, the life of the energy storage power system module will be shortened by 5% for every 1°C increase in the temperature difference of the power system module , therefore, the temperature has a great influence on the service life of the power system module.

However, in practical applications, since the power system module is assembled in a closed space, the heat inside is difficult to be discharged to the outside, so there will be a problem of poor heat dissipation. Moreover, when the power system module is working, the temperature of each area is different. There are situations such as poor consistency and unevenness of the temperature collected by the NTC of the power system module itself, so it is difficult to use other measures to effectively dissipate heat from the power system module.

Therefore, it is necessary to provide a technical solution capable of cooling the power system module and ensuring the cooling effect.

Utility model content

The utility model proposes a combined cooling system device on an energy storage power supply system module to solve the problems of poor heat dissipation and unsatisfactory heat dissipation effect of the existing power supply system module.

The technical scheme adopted by the utility model is as follows: it includes a box body, a cooling device, a fan, and a battery module. The two battery modules are installed inside the box body along the length direction of the box body, and are respectively On both sides of the box, the cooling device is located between the two battery modules, and the cooling device is sealed and connected with the two battery modules and the box to form a The annular guide cavity of the battery module, the fan is installed on the outer wall of one end of the box, and the fan communicates with the guide cavity, and the two sides of the box are equipped with Air holes, driven by the fan, cold air enters the inside of the box through the ventilation holes, passes through the battery module to the guide cavity, and then is discharged from the fan.

Further, it also includes a low-voltage wire harness assembly, a low-voltage electrical connector and a battery management unit, the low-voltage electrical connector is installed on the outer wall of the same end of the box as the fan, one end of the low-voltage wire harness assembly is connected to the The battery module is connected, and the other end is connected to the low-voltage electrical connector, and the battery management unit is installed outside the low-voltage electrical connector.

Further, the box includes an upper case and a lower tray assembly, the upper case is installed on the top of the lower tray assembly, and forms a space with the lower tray assembly, the battery The modules are installed inside the space.

Further, the cooling device, the battery module, and the box are all sealed and connected by plugging foam to form the annular air guiding cavity.

Further, the battery module includes several battery cells arranged side by side, and every two battery cells are spaced apart so as to form an air inlet channel at the space.

Further, an air outlet is provided on the outer wall of the end of the lower tray assembly where the fan is installed, and an air inlet is provided on the inner wall of the end of the lower tray assembly where the fan is installed. The guide cavity communicates with and corresponds to the air inlet; the fan is installed in the air outlet.

Further, the air exchange holes are strip-shaped, and are arranged on the wall surfaces on both sides of the lower tray assembly, and the area of the air exchange holes on the same wall surface decreases successively toward the fan direction.

Further, the positions of the ventilation holes correspond to the positions of the air inlet channels one by one.

The beneficial effects of the utility model are:

In this application, through the work of the fan, suction is generated in the guide cavity, so that the outside air can enter the air intake channel of the battery module along the ventilation hole, and then pass through the two battery modules Finally, it enters the guide cavity and is discharged by the fan, so that the power system module can exchange air with the outside world, thereby realizing heat dissipation; and the air inlet channel is located between the two cells of the battery module. The contact area between the battery core and the air can be increased, so as to realize the large-area heat dissipation of the battery core and improve the heat dissipation efficiency. , the air flow rate is uniform, and after the external air enters the gap between the battery modules along the air inlet channel, it is discharged out along the guide cavity as much as possible, so as to ensure the heat dissipation effect and make the power system modules in each area The temperature difference is consistent to ensure the service life of the power system modules.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but should not be construed as limiting the utility model. In the attached picture:

Fig. 1 is an exploded view of the overall structure of an embodiment of the utility model;

Figure 2 is an internal sectional view of an embodiment of the utility model;

Fig. 3 is a structural schematic diagram of a battery module installed in a box according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of an embodiment of the utility model where the air duct plate is not installed on the box body;

Fig. 5 is a schematic diagram of the connection of the fan, the deflector plate, the air channel plate and the blocking foam in one embodiment of the present invention;

Fig. 6 is a schematic diagram of the installation of a fan according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of the air duct plate and the plugging foam according to an embodiment of the present invention;

Fig. 8 is a structural schematic diagram of an embodiment of the utility model after the air duct plate is connected with the blocking foam;

Fig. 9 is a schematic structural view of the side wall of the fan installed in the box according to an embodiment of the present invention;

Fig. 10 is a schematic structural view of a deflector according to an embodiment of the present invention;

Fig. 11 is a structural schematic diagram of another viewing angle of the air deflector according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of the connection between the air deflector and a crossbeam according to an embodiment of the present invention;

Fig. 13 is a structural schematic diagram of an air duct plate installed on a box body according to an embodiment of the present invention;

Fig. 14 is a schematic diagram of the connection between the deflector air plate and the air channel plate in an embodiment of the present invention;

Fig. 15 is a schematic diagram of the connection between the air duct plate and a beam according to an embodiment of the present invention;

Fig. 16 is a schematic structural view of a ventilation hole according to an embodiment of the present invention;

Fig. 17 is a schematic structural diagram of a ventilation hole in another embodiment of the present invention;

Fig. 18 is a schematic diagram of the gas flow in the box when the air is exhausted according to an embodiment of the present invention.

Description of drawings: 1. Box body; 11. Ventilation hole; 12. Air exhaust port; 13. Beam; 14. Connection hole; 15. Handle; 16. First installation hole; 17. Upper shell; 18. Lower tray assembly; 20. Cooling device; 2. Air channel plate; 21. Connecting plate; 3. Battery module; 31. Air intake channel; 4. Fan; 5. Blocking foam; 6. Air guide plate ;61. Air inlet; 62. Second mounting hole; 7. Fastening bolt; 8. Rib; 81. Card hole; 9. Sealing foam; Electrical connector; 50, battery management unit.

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

In order to facilitate the understanding of those skilled in the art, the present application describes the specific implementation process of the technical solution provided by the present application through the following examples.

Please refer to Figures 1-2, this application provides a combined cooling system device on an energy storage power system module, including: a box body 1, a cooling device 20, a fan 4, and a battery module 3, two battery modules 3 are installed inside the box 1 along the length direction of the box 1, and are respectively located on both sides of the box 1, the cooling device 20 is located between the two battery modules 3, and the cooling device 20 and the two battery modules 3 and the sealed connection between the box body 1 to form an annular flow guide cavity perpendicular to the battery module 3, the fan 4 is installed on the outer wall of one end of the box body 1, and the fan 4 communicates with the flow guide cavity, the box body 1 Ventilation holes 11 are provided on both sides of the box. Driven by the fan 4, cold air enters the interior of the box body 1 through the ventilation holes 11, and is discharged from the fan 4 after passing through the battery module 3 to the diversion cavity.

Further, it also includes a low-voltage wire harness assembly 30, a low-voltage electrical connector 40, and a battery management unit 50. The low-voltage electrical connector 40 is installed on the outer wall of the box body 1 at the same end as the fan 4, and one end of the low-voltage wire harness assembly 30 is connected to the battery. The module 3 is connected, and the other end is connected with the low-voltage electrical connector 40 , and the battery management unit 50 is installed outside the low-voltage electrical connector 40 .

Please refer to Figures 2-5 and 13, the cooling system device 20 includes a connecting plate 21, an air duct plate 2, a deflector plate 6, ribs 8, and a beam 13;

Wherein, two ribs 8 are juxtaposed and arranged at the bottom surface of the box body 1 at intervals, and are parallel to the length direction of the box body 1, and the two ends of the ribs 8 extend to both sides of the box body 1 respectively, and then each rib 8 are provided with a battery module 3, specifically, a plurality of clamping holes 81 for mounting screws are provided on the rib 8, and the battery module 3 is stably installed on the upper end surface of the rib 8 through screws, and at the same time , the space below the battery module 3 can be blocked by ribs 8 to limit the flow direction of the air; after the battery module 3 is installed, there is a gap between the two battery modules 3, and the gap is located between the two Between the ribs 8, at the same time, several air intake passages 31 are arranged side by side inside the battery module 3. Specifically, each battery module 3 includes several battery cells arranged side by side, and between every two battery cells Install at intervals to form an air inlet channel 31 in the middle of the two batteries, and then set several ventilation holes 11 on the front and rear walls of the box body 1, so that each ventilation hole 11 corresponds to an air inlet channel 31;

And the deflector air plate 6 is installed on the side wall of the box body 1, and is positioned at the inside of the box body 1, and the flow guide cavity is formed between the deflector air plate 6 and the wall surface of the box body 1, specifically, the air guide The connection method of the air flow plate is as follows: several first installation holes 16 are provided on the side wall of the box body 1 (see FIG. 9 ), and then several second installation holes are provided on both sides of the air deflector plate 6 62 (see Fig. 11), the first installation hole 16 corresponds to the second installation hole 62 one by one, then install the bolt 7 in the first installation hole 16 and the second installation hole 62, so that the deflector 6 is installed on the on the box body 1; and the fan 4 is installed on the outer side wall of the box body 1, and the air outlet of the fan 4 is connected with the guide cavity correspondingly, so that suction can be generated at the guide cavity during work; at the same time, the guide cavity On the side of the air flow plate 6 far away from the fan 4, an air inlet 61 communicating with the guide cavity is provided, and the air inlet 61 faces the gap between the battery modules 3, so that the suction of the fan 4 acts on the air through the air inlet 61. Inside of box 1;

In this embodiment, the air channel plate 2 is arranged in a bent structure, one end of which is fixed on the upper end of the air guide plate 6, and the other end is fixed on the bottom surface of the box body 1, and the air channel plate 2 is located between the two battery modules. 3, so as to block the air in the gap and play a guiding role.

In this application, through the operation of the fan 4, suction is generated in the guide cavity, so that the outside air can enter the air inlet channel 31 of the battery module 3 along the ventilation hole 11, and then pass through two The gap between the two battery modules 3 finally enters the guide cavity and is discharged by the fan 4, so as to allow the power system module to perform air conversion with the outside world, thereby realizing heat dissipation; and wherein, the air inlet channel 31 is located in the battery module. Between the two cells of group 3, the contact area between the cells and the air can be increased, so as to realize large-area heat dissipation of the cells and improve heat dissipation efficiency. At the same time, the space below the battery module 3 is sealed by ribs 8 and block the gap between the two battery modules 3 through the deflector air plate 6, so as to play a diversion effect, so that the fan 4 can let the external air enter along the air inlet channel 31 when the fan 4 is working After reaching the gap between the battery modules 3, it can be discharged into the guide cavity as much as possible (see Figure 18), so as to ensure the heat dissipation effect, and make the air flow rate uniform, so that the temperature difference of each area in the power system module is consistent, and In this way, the service life of the power system module is guaranteed.

Please refer to Figures 4-5, 7-8, and 13. In this embodiment, blocking foam 5 is provided on both sides of the air duct plate 2, and the length of the blocking foam 5 is the same as that of the air duct plate 2. Corresponding length, after installed in the box body 1, the plugging foam 5 will be close to the battery module 3, so as to improve the sealing between the air duct plate 2 and the battery module 3, so as to further ensure the operation of the fan 4 At this time, the air between the battery modules 3 can enter the guide cavity as far as possible and be discharged.

Please refer to Figures 3 and 9-12. In this embodiment, the cross-sectional shape of the deflector 6 is convex, and the protruding structure at the front protrudes into the gap between the two battery modules 3, and further The air inlet 61 is arranged at the protruding structure, so that the air inlet 61 faces the gap between the two battery modules 3, and at the same time, the height of the air inlet 61 is slightly smaller than or equal to the height of the gap between the battery modules 3, so as to This can make the suction force generated by the fan 4 at the guide cavity more evenly act on the gap between the two battery modules 3 through the air inlet 61, thereby improving the fluidity of the air. At the same time, the guide cavity formed between the guide air plate 6 and the box body 1 can make the suction force of the fan 4 act on the guide cavity, and a certain vacuum effect will be formed here, thereby increasing the suction force. Thereby, the fluidity of the air can be improved, and the heat dissipation efficiency can be improved.

It is worth mentioning that, in order to improve the installation convenience of the deflector 6 and improve the sealing performance of the deflector cavity, in this embodiment, sealing plates are provided at the upper and lower ports of the deflector 6, through the sealing The plate seals the guide cavity in the guide air plate 6, and sealant is arranged at the joint of the seal plate to improve the sealing effect. After the upper and lower ports of the guide air plate 6 are completely sealed, the guide The air flow plate 6 is installed on the box body 1 to improve the installation convenience of the air deflector plate 6 . Of course, in another embodiment, a sealing plate can be provided only at the upper port of the deflector 6, the upper port is sealed by the sealing plate, and then the lower port of the deflector 6 is directly welded to the box body 1 The bottom surface of the air deflector 6 is directly installed on the box body 1, and the lower port of the air deflector 6 is sealed through the bottom plate of the box body 1, and then the air deflector 6 and the box body 1 are sealed. A sealant is provided at the junction of the wind deflector 6 and a sealant at the junction of the air deflector 6 and the sealing plate, so as to improve the sealing effect.

Further, please refer to Fig. 4, the deflector 6 is provided with sealing foam 9 on both sides of the air inlet 61, and after installation, the sealing foam 9 is close to the side of the battery module 3, thereby improving Sealing between the deflector 6 and the battery module 33 .

In this application, through the setting of the blocking foam 5 and the sealing foam 9, the airtightness between the deflector wind sealing plate and the air channel plate 2 and the battery module 3 can be improved, so that the air inlet channel 31, the two The air in the gap between the battery modules 3 flows toward the fan 4 to the greatest extent, thereby improving the fluidity of the air, ensuring uniformity of heat dissipation, and improving heat exchange efficiency.

Please refer to FIG. 6 , in this embodiment, an air exhaust port 12 is provided on the side wall of the box body 11 where the air guide cavity is installed, and the air exhaust port 12 communicates with the air guide cavity and corresponds to the air inlet 61 , and the fan 4 is installed in the air outlet 12, so that the fan 4 can generate suction at the guide cavity, thereby performing heat dissipation in the box body 1. Specifically, the installation method of the fan 4 is set as follows: several connection holes 14 are provided on the side wall of the box body 1, and the connection holes 14 are arranged around the air outlet 12, and then several connection holes are provided on the fan 4 14 one-to-one corresponding holes, then install the fastening bolts 7 in the holes and the connecting holes 14, and install the fan 4 to the air outlet 12 of the box body 1 through the fastening bolts 7.

Please refer to Figures 2, 7, 13-15. In this embodiment, the air duct plate 2 is L-shaped, and the length of the air duct plate 2 corresponds to the length of the gap between the two battery modules 3. At the same time, the air duct plate The height of 2 corresponds to the height of the battery module 3, so that after the air duct plate 2 is installed, it will completely cover the gap above and one side of the gap between the two battery modules 3, thereby ensuring the battery module 3 The plugging and diversion effect of the gap between

Wherein, the specific installation method of the air duct plate 2 is as follows: a connecting plate 21 is arranged at both ends of the air duct plate 2, and holes for installing screws are arranged on the connecting plate 21, and then on the top of the air guide plate 6 A threaded hole corresponding to the hole on one connecting plate 21 is provided on the end face, and a threaded hole corresponding to the hole on the other connecting plate 21 is also provided on the box body 1, so as to give way to the air channel plate 2 The hole position of the connecting plate 21 on the left corresponds to the hole position of the air guide plate 6, so that screws are installed in the holes to fix one end of the air duct plate 2 on the air guide plate 6, and then the air duct plate 2 The hole position of the connecting plate 21 on the right corresponds to the threaded hole on the box body 1 , so that screws are installed in the holes to fix the other side of the air channel plate 2 to the box body 1 .

Please refer to Fig. 4, 12-13, in this embodiment, two beams 13 are arranged side by side at the bottom surface of box body 1 and spaced apart, and rib 8 is arranged between two beams 13, and is perpendicular to beam 13, with The enclosing forms a frame structure, thereby improving the sealing performance below the battery module 3 .

Wherein, the lower end of the air guide plate 6 is inwardly recessed to form a notch corresponding to the height of the beam 13, and the air guide plate 6 is lapped on a beam 13 at the notch (see FIG. 12 ), which is worth It should be noted that there is a distance between the crossbeam 13 and the side wall of the box body 1, so that the installation position of the air deflector 6 can be defined, and the air deflector 6 can be easily placed on the crossbeam 13 through the notch. Therefore, it can be quickly placed to the corresponding installation position, and through the limitation of the beam 13, the deflector 6 can be stably placed on the beam 13 and close to the side wall of the box body 1, so that the installation of the deflector 6 can be facilitated . The threaded holes for installing the air channel plate 2 on the box body 1 are provided on another beam 13 , so that the lower part of the air channel plate 2 is installed on the beam 13 .

Further, the height of the crossbeam 13 corresponds to the height of the rib 8, so as to prevent the height difference between the crossbeam 13 and the rib 8 from affecting the sealing performance under the battery module 3.

Please refer to Figures 16-17. In this embodiment, the air exchange holes 11 are arranged in a strip shape and correspond to the position of the air intake channel 31, so that the outside air can directly enter the air intake channel from the air exchange holes 11. 31, reduce air diversion. Further, the area of the ventilation hole 11 at the same wall decreases sequentially along the direction of the fan 4, because the suction force generated by the fan 4 during operation is the closer to the fan 4, the greater the suction force, which will cause each air inlet channel The wind speed at 31 also changes accordingly. Therefore, by adjusting the area of the ventilation hole 11, the wind speed at each air inlet channel 31 can be adjusted to ensure that the air volume passing through each air inlet channel 31 is consistent as far as possible, thereby ensuring the same heat dissipation effect. , and finally keep the temperature of each position of the battery module uniform.

Please refer to FIG. 2 , in this embodiment, a cable tie 10 is provided in the box body 1 , and the battery module 3 is bound by the cable tie 10 , which can further improve the installation stability of the battery module 3 in the box body 1 .

Please refer to FIG. 9 , in this embodiment, a handle 15 is provided on the outer side wall of the box body 1, and the handle 15 is in a U-shaped structure, and a grip position is provided by the handle 15, thereby facilitating the movement of the box body 1.

Compared with existing technology:

1. This application can improve the heat dissipation effect inside the energy storage power supply system module, and at the same time ensure its internal temperature balance, preventing performance degradation caused by large temperature differences.

2. This application can ensure effective heat dissipation and ventilation of the energy storage power system module when the temperature is too high, and at the same time, the harmful gas generated can be discharged in time.

3. This application can prevent the thermal runaway of the energy storage power supply system module, resulting in failure control or explosion.

4. The overall structure of the application is simple, the assembly process is easy to implement, easy to operate, easy to disassemble, and low in cost.

As long as it does not violate the idea created by the utility model, any combination of various embodiments of the utility model should be regarded as the disclosed content of the utility model; Any combination of simple modifications and different embodiments that do not violate the ideas created by the utility model should be within the scope of protection of the utility model.

Claims (8)

1. A combined cooling system device on an energy storage power system module, comprising: the battery cooling box comprises a box body (1), a cooling device (20), a fan (4) and battery modules (3), wherein the two battery modules (3) are arranged inside the box body (1) along the length direction of the box body (1) and are respectively arranged on two sides of the box body (1), the cooling device (20) is arranged between the two battery modules (3), the cooling device (20) is hermetically connected with the two battery modules (3) and the box body (1) to form an annular flow guide cavity perpendicular to the battery modules (3), the fan (4) is arranged on the outer wall of one end of the box body (1), the fan (4) is communicated with the flow guide cavity, ventilating holes (11) are formed in two sides of the box body (1), and cold air enters the box body (1) from the ventilating holes (11) under the driving of the fan (4) and is discharged from the fan (4) after passing through the battery modules (3) to the flow guide cavity.

2. The combined cooling system arrangement on a power storage system module as claimed in claim 1, wherein: the low-voltage wire harness assembly is characterized by further comprising a low-voltage wire harness assembly (30), a low-voltage electrical connector (40) and a battery management unit (50), wherein the low-voltage electrical connector (40) is installed on the outer wall of the same end of the box body (1) as the fan (4), one end of the low-voltage wire harness assembly (30) is connected with the battery module (3), the other end of the low-voltage wire harness assembly is connected with the low-voltage electrical connector (40), and the battery management unit (50) is installed outside the low-voltage electrical connector (40).

3. The combined cooling system arrangement on a power storage system module as claimed in claim 1, wherein: the box (1) comprises an upper shell (17) and a lower tray assembly (18), the upper shell (17) is installed at the top end of the lower tray assembly (18), a space is formed between the upper shell and the lower tray assembly (18), and the battery module (3) is installed inside the space.

4. The combined cooling system arrangement on a power storage system module as claimed in claim 1, wherein: the cooling device (20), the battery module (3) and the box body (1) are hermetically connected through the plugging foam (9) to form an annular flow guide cavity.

5. The combined cooling system arrangement on an energy storage power system module of claim 1, wherein: the battery module (3) comprises a plurality of battery cores which are arranged in parallel, and every two battery cores are arranged at intervals to form an air inlet channel (31) at the intervals.

6. The combined cooling system arrangement on an energy storage power system module of claim 3, wherein: an air outlet (12) is formed in the outer wall of one end, provided with the fan (4), of the lower tray assembly (18), an air inlet (61) is formed in the inner wall of one end, provided with the fan (4), of the lower tray assembly (18), and the air outlet (12) is communicated with the flow guide cavity and corresponds to the air inlet (61); the fan (4) is arranged in the air outlet (12).

7. The combined cooling system arrangement on an energy storage power system module of claim 3, wherein: the ventilating holes (11) are strip-shaped and are arranged on the wall surfaces of two sides of the lower tray assembly (18), and the areas of the ventilating holes (11) on the same wall surface are sequentially reduced towards the direction of the fan (4).

8. The combined cooling system arrangement on an energy storage power system module of claim 5, wherein: the positions of the air vent holes (11) correspond to the positions of the air inlet channels (31) one by one.

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