WO2024050713A1 - Combined cooling system apparatus on energy storage power system module - Google Patents

Abstract

The present application provides a combined cooling system apparatus on an energy storage power system module, comprising: a box body, a fan, an air deflector plate, an air duct plate and ribs. In the present application, the power system module exchanges air with the outside by means of the fan to achieve heat dissipation. In addition, an air inlet channel is located between two cells of a battery module, so that the contact area of the cells and the air can be increased, large-area heat dissipation of the cells is achieved, and the heat dissipation efficiency is improved. Moreover, by means of the deflection of the air deflector plate and blocking of the ribs, the air velocity can be uniform when the fan is in operation, and after entering gaps between the battery modules along the air inlet channel, the external air is discharged along a deflector cavity as much as possible, so that the heat dissipation effect can be ensured, and the temperature difference of regions in the power system module is consistent so as to ensure the service life of the power system module.

Description

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

The invention relates to the technical field of battery module heat dissipation, and 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 increasingly widely used. Among them, the energy storage power supply system module is composed of multiple battery cells and is assembled in a closed battery cluster space. During the process of charging and discharging the battery cells, the energy storage power supply system module itself will generate a certain temperature, and this temperature will Varies with work conditions.

However, the energy storage power system module itself has extremely high requirements for 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, temperature has a great impact on the service life of the power system module.

technical problem

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 performance. Moreover, when the power system module is working, the temperature in each area is different, and there are The NTC collection temperature of the power system module itself has poor consistency and unevenness, 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 that can dissipate heat for the power system module and ensure the heat dissipation effect.

Technical solutions

The present invention proposes a combined cooling system device on an energy storage power supply system module to solve the problem of poor heat dissipation and unsatisfactory heat dissipation effect of existing power supply system modules.

The technical solution adopted by the present invention is as follows: a combined cooling system device on an energy storage power supply system module, including: a box, a fan, an air guide plate, an air duct plate and two ribs; the two ribs Intervals are provided at the bottom surface of the box, and a battery module is provided on each rib, and there is a gap between the two battery modules; several battery modules are arranged side by side. An air channel, the front and rear walls of the box are provided with several ventilation holes in parallel, and each ventilation hole corresponds to one of the air inlet channels;

The air guide plate is installed on one side wall of the box and is located inside the box, and a guide cavity is formed between the air guide plate and the wall of the box; the fan It is installed on the side wall of the box, and the air outlet of the fan is connected with the guide cavity; the side of the guide plate away from the fan is provided with an air guide connected with the guide cavity. an air inlet, and the air inlet faces the gap between the two battery modules;

The air duct plate is arranged in a bent structure, with one end fixed on the upper part of the air guide plate and the other end fixed on the bottom surface of the box, and the air duct plate is located on the two battery modules. in the gap between them to act as a diversion.

Further, the battery module includes a plurality of cells arranged in parallel, and every two cells are spaced apart to form the air inlet channel at intervals.

Further, the cross-sectional shape of the air deflector is convex, and the convex structure at the front extends into the gap between the two battery modules, and the air inlet is provided at the convex structure. .

Furthermore, the air guide plate is vertically provided with sealing foam on both sides of the air inlet, and the sealing foam is close to the battery module to improve the connection between the air guide plate and the battery module. Sealing between the battery modules.

Further, blocking foam is provided on both sides of the air duct plate, and the blocking foam is close to the battery module to improve the air duct plate and the battery module. Tightness.

Further, the air duct plate is L-shaped, and the length of the air duct plate corresponds to the length of the gap between the two battery modules, and the height of the air duct plate corresponds to the length of the battery module. height corresponding.

Further, an air outlet is provided on the side wall of the box on which the air guide plate is installed, and the air outlet is connected to the air guide cavity and corresponds to the air inlet; A fan is installed in the air outlet.

Further, two beams are arranged side by side and spaced apart on the bottom surface of the box; the ribs are arranged between the two beams and are perpendicular to the beams;

The lower end of the air guide plate is recessed inward to form a notch with a height corresponding to the height of the cross beam. The air guide plate overlaps one of the cross beams at the notch, and the ribs One end is mounted on the other said beam.

Further, the height of the cross beam corresponds to the height of the rib.

Further, the ventilation holes are arranged in a strip shape, and the areas of the ventilation holes at the same wall surface decrease sequentially along the direction of the fan.

beneficial effects

In this application, the fan works to generate suction in the diversion cavity, so that the outside air can enter the air inlet channel of the battery module along the ventilation hole, and then pass through the two battery modules. The air inlet channel is located between the two cells of the battery module. time, the contact area between the battery core and the air can be increased, thereby realizing large-area heat dissipation of the battery core and improving heat dissipation efficiency. At the same time, through the diversion of the air guide plate and the blocking of the ribs, the fan can be operated during operation. , the air flow speed is uniform, and after the external air enters the gap between the battery modules along the air inlet channel, it is discharged along the guide cavity as much as possible, thereby ensuring the heat dissipation effect and making the various areas in the power system module The temperature difference is consistent to ensure the service life of the power system module.

Description of the drawings

The drawings are used to provide a further understanding of the present invention and constitute a part of the description. They are used to explain the present invention together with the following specific embodiments, but should not constitute a limitation of the present invention. In the attached picture:

Figure 1 is an internal cross-sectional view of an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a battery module installed in a box according to an embodiment of the present invention;

Figure 3 is a schematic structural diagram of an embodiment of the present invention in which the air duct board is not installed on the box;

Figure 4 is a schematic diagram of the connection of the fan, air guide plate, air duct plate and blocking foam according to one embodiment of the present invention;

Figure 5 is a schematic diagram of the installation of a fan according to an embodiment of the present invention;

Figure 6 is a schematic structural diagram of the air duct plate and blocking foam according to an embodiment of the present invention;

Figure 7 is a schematic structural diagram of the air duct board and the blocking foam connected according to an embodiment of the present invention;

Figure 8 is a schematic structural diagram of the side wall of a box with a fan installed in one embodiment of the present invention;

Figure 9 is a schematic structural diagram of an air guide plate according to an embodiment of the present invention;

Figure 10 is a schematic structural diagram of the air deflector from another perspective according to an embodiment of the present invention;

Figure 11 is a schematic diagram of the connection between the air deflector and a cross beam according to an embodiment of the present invention;

Figure 12 is a schematic structural diagram of the air duct board installed on the box according to an embodiment of the present invention;

Figure 13 is a schematic diagram of the connection between the air guide plate and the air duct plate according to an embodiment of the present invention;

Figure 14 is a schematic diagram of the connection between the air duct plate and a cross beam according to an embodiment of the present invention;

Figure 15 is a schematic structural diagram of a ventilation hole according to an embodiment of the present invention;

Figure 16 is a schematic structural diagram of a ventilation hole according to another embodiment of the present invention;

Figure 17 is a schematic diagram of gas flow during exhaust in the box according to an embodiment of the present invention.

Notes on the drawings: 1. Box; 11. Ventilation holes; 12. Air outlet; 13. Cross beam; 14. Connection hole; 15. Handle; 16. The first mounting hole; 2. Air duct board; 21. Connecting plate; 3. Battery module; 31. Air inlet channel; 4. Fan; 5. Block foam; 6. Wind deflector; 61. Air inlet; 62. Second mounting hole; 7. Tighten the bolts; 8. Ribs; 81. Jam hole; 9. Sealing foam; 10. Ties.

Embodiments of the invention

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

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

Please refer to Figures 1-4 and 12. This application provides a combined cooling system device on an energy storage power system module, including: box 1, fan 4, air guide plate 6, air duct plate 2 and ribs 8; Among them, two ribs 8 are arranged side by side and spaced apart at the bottom surface of the box 1, and are parallel to the length direction of the box 1, and the two ends of the ribs 8 extend to both sides of the box 1 respectively, and then at each end. Each rib 8 is provided with a battery module 3. Specifically, the rib 8 is provided with several holes 81 for installing screws, and the battery module 3 is stably installed to the upper end surface of the rib 8 through screws. , at the same time, the space under the battery module 3 can be blocked by the ribs 8 to limit the flow of air; and after the battery module 3 is installed, there is a gap between the two battery modules 3, and the gap Located between the two ribs 8, at the same time, several air inlet channels 31 are arranged in parallel inside the battery module 3. Specifically, each battery module 3 includes several battery cells arranged in parallel, and every two battery cells They are installed at intervals to form an air inlet channel 31 in the middle of the two battery cells. Then, several ventilation holes 11 are provided on the front and rear walls of the box 1 so that each ventilation hole 11 corresponds to a Air inlet channel 31;

The air guide plate 6 is installed on one side wall of the box 1 and is located inside the box 1, and a guide cavity is formed between the air guide plate 6 and the wall of the box 1. Specifically, The connection method of the air flow plate is as follows: several first mounting holes 16 are provided on the side wall of the box 1 (see Figure 8), and then several second mounting holes are provided on both sides of the air flow plate 6 62 (see Figure 10), the first mounting hole 16 corresponds to the second mounting hole 62, and then install the bolts 7 in the first mounting hole 16 and the second mounting hole 62, thereby installing the air deflector 6 to On the box 1; and the fan 4 is installed on the outer wall of the box 1, and the air outlet of the fan 4 is connected to the diversion cavity, so that suction can be generated in the diversion cavity during operation; at the same time, the guide cavity An air inlet 61 connected to the air guide cavity is provided on the side of the air flow plate 6 away from the fan 4, and the air inlet 61 faces the gap between the battery modules 3, so that the suction force of the fan 4 is applied to the air flow plate 6 through the air inlet 61. Inside box 1;

In this embodiment, the air duct plate 2 is arranged in a bent structure, with one end fixed to the upper end of the air guide plate 6 and the other end fixed to the bottom surface of the box 1, and the air duct plate 2 is located between the two battery modules. 3, in order to block the air in the gap and act as a diversion.

In this application, the work of the fan 4 generates suction 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 the two The gap between the battery modules 3 finally enters the diversion cavity and is discharged by the fan 4, so that the power system module can exchange air with the outside world to achieve heat dissipation; among them, 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, thereby realizing large-area heat dissipation of the cells and improving heat dissipation efficiency. At the same time, the space below the battery module 3 is sealed by the ribs 8. The air guide plate 6 is used to block the gap between the two battery modules 3 to provide a diversion effect, thereby allowing the outside air to 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 diversion cavity as much as possible (see Figure 17), thereby ensuring the heat dissipation effect and making the air flow rate uniform, so that the temperature difference in each area within the power system module is consistent, and This ensures the service life of the power system module.

Please refer to Figures 3-4, 6-7, and 12. 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 equal to the length of the air duct plate 2. Corresponding to the length, after being installed in the box 1, the blocking foam 5 will be close to the battery module 3, thereby improving the sealing between the air duct plate 2 and the battery module 3, thereby further ensuring the operation of the fan 4 At this time, the air between the battery modules 3 can enter the diversion cavity as much as possible and be discharged.

Please refer to Figures 2 and 8-11. In this embodiment, the cross-sectional shape of the air deflector 6 is convex, and the convex structure at the front extends into the gap between the two battery modules 3. The air inlet 61 is disposed at the raised structure so that the air inlet 61 faces the gap between the two battery modules 3. At the same time, the height of the air inlet 61 is slightly less than or equal to the height of the gap between the battery modules 3, so that the air inlet 61 faces the gap between the two battery modules 3. This allows the suction force generated by the fan 4 at the flow guide cavity to act more evenly 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 plate 6 and the box 1 can cause the suction force of the fan 4 to act on the guide cavity, and a certain vacuum effect will be formed here, thereby increasing the suction force. This improves air flow and improves heat dissipation efficiency.

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

Further, please refer to Figure 3. The air guide plate 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 sides of the battery module 3, thereby improving The sealing between the air guide plate 6 and the battery module 33.

In this application, through the arrangement of the blocking foam 5 and the sealing foam 9, the sealing performance between the air guide and air sealing plate and the air duct plate 2 and the battery module 3 can be improved, thereby allowing the air inlet channel 31 and both The air in the gap between the battery modules 3 flows in the direction of the fan 4 to the greatest extent, thereby improving the fluidity of the air, ensuring uniform heat dissipation, and improving heat exchange efficiency.

Please refer to Figure 5. In this embodiment, an air outlet 12 is provided on the side wall of the box 11 where the air guide cavity is installed. The air outlet 12 is connected 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 dissipating heat in the box 1. Specifically, the installation method of the fan 4 is as follows: several connection holes 14 are provided on the side wall of the box 1, and the connection holes 14 are provided around the exhaust port 12, and then several connection holes are provided on the fan 4. 14, then install the fastening bolts 7 in the holes and the connecting holes 14, and install the fan 4 to the exhaust port 12 of the box 1 through the fastening bolts 7.

Please refer to Figures 1, 6, and 12-14. 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 2 is L-shaped. The height of 2 corresponds to the height of the battery module 3, so that after the air duct plate 2 is installed, it completely covers the gap between the two battery modules 3 and one side, thereby ensuring that the battery module 3 is The sealing and diversion effect of the gap between

Among them, the specific installation method of the air duct plate 2 is: a connecting plate 21 is provided at both ends of the air duct plate 2. The connecting plate 21 is provided with holes for installing screws, and then the air guide plate 6 is installed on the top of the air duct plate 6. The end face is provided with a threaded hole corresponding to the hole position on one connecting plate 21, and the box body 1 is also provided with a threaded hole corresponding to the hole position on the other connecting plate 21, thereby giving way to the air duct plate 2 The holes of the connecting plate 21 on the left correspond to the holes of the air guide plate 6, so install screws in the holes to fix one end of the air duct plate 2 to the air guide plate 6, and then tighten the screws located on the air duct plate 2 The hole position of the connecting plate 21 on the right side 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 duct plate 2 to the box body 1.

Please refer to Figures 3 and 11-12. In this embodiment, two cross beams 13 are arranged side by side and spaced apart on the bottom surface of the box 1, and the ribs 8 are arranged between the two cross beams 13 and are perpendicular to the cross beams 13. This enclosure forms a frame structure, thereby improving the sealing performance below the battery module 3 .

Among them, the lower end of the air guide plate 6 is recessed inward to form a notch with a height corresponding to the height of the cross beam 13, and the air guide plate 6 overlaps a cross beam 13 at the notch (see Figure 11). It is worth mentioning that It should be noted that there is a distance between the cross beam 13 and the side wall of the box 1, which can define the installation position of the air guide plate 6. At the same time, the air guide plate 6 can be easily placed on the cross beam 13 through the slot. Therefore, it can be quickly placed in the corresponding installation position, and through the limitation of the cross beam 13, the air guide plate 6 can be stably placed on the cross beam 13 and close to the side wall of the box 1, which can facilitate the installation of the air guide plate 6 . The threaded holes for installing the air duct plate 2 on the box 1 are provided on another cross beam 13, so that the lower part of the air duct plate 2 is installed on the cross beam 13.

Furthermore, the height of the cross beam 13 corresponds to the height of the ribs 8 to prevent the height difference between the cross beam 13 and the ribs 8 from affecting the sealing performance below the battery module 3 .

Please refer to Figures 15-16. In this embodiment, the ventilation holes 11 are arranged in a strip shape and correspond to the position of the air inlet channel 31, so that external air can directly enter the air inlet channel from the ventilation holes 11. 31, reduce air diversion. Furthermore, the area of the ventilation holes 11 on the same wall gradually decreases along the direction of the fan 4, because the suction force generated by the fan 4 during operation is greater as it is closer to the fan 4, thus causing each air inlet channel to The wind speed of 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 try to ensure that the air volume passing through each air inlet channel 31 is consistent, thereby ensuring the same heat dissipation effect. , ultimately keeping the temperature uniform at all locations of the battery module.

Please refer to FIG. 1 . In this embodiment, a cable tie 10 is provided in the box 1 . The battery module 3 is bundled with the cable tie 10 , which can further improve the installation stability of the battery module 3 in the box 1 .

Please refer to Figure 8. In this embodiment, a handle 15 is provided on the outer side wall of the box 1, and the handle 15 has a U-shaped structure. The handle 15 provides a holding position, thereby facilitating the movement of the box 1.

Compared with existing technology:

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

2. This application can ensure that the energy storage power supply system module can effectively dissipate heat and ventilate when the temperature is too high, and at the same time, the harmful gases generated can be discharged in a timely manner.

3. This application can prevent the energy storage power supply system module from thermal runaway, which may lead to failure of control or explosion.

4. The overall structure of this application is simple, the assembly process is easy to implement, easy to operate, easy to disassemble and assemble, and at the same time low cost.

As long as the creative ideas of the present invention are not violated, any combination of various embodiments of the present invention shall be regarded as the disclosed content of the present invention; within the scope of the technical concept of the present invention, various simple modifications and variations can be made to the technical solution. Any combination of different embodiments that does not violate the creative idea of the present invention should be within the protection scope of the present invention.

Claims (10)

A combined cooling system device on an energy storage power supply system module, which is characterized in that it includes: a box, a fan, an air guide plate, an air duct plate and two ribs; the two ribs are arranged at intervals. At the bottom of the box, a battery module is provided on each rib, and there is a gap between the two battery modules; several air inlet channels are arranged side by side on the battery modules, so Several ventilation holes are arranged side by side on the front and rear walls of the box, and each ventilation hole corresponds to one of the air inlet channels; The air guide plate is installed on one side wall of the box and is located inside the box, and a guide cavity is formed between the air guide plate and the wall of the box; the fan It is installed on the side wall of the box, and the air outlet of the fan is connected with the guide cavity; the side of the guide plate away from the fan is provided with an air guide connected with the guide cavity. an air inlet, and the air inlet faces the gap between the two battery modules; The air duct plate is arranged in a bent structure, with one end fixed on the upper part of the air guide plate and the other end fixed on the bottom surface of the box, and the air duct plate is located on the two battery modules. in the gap between them to act as a diversion. The combined cooling system device on the energy storage power supply system module according to claim 1, wherein the battery module includes a plurality of battery cells arranged in parallel, and each two battery cells are spaced apart. , to form the air inlet channel at intervals. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: the cross-sectional shape of the air guide plate is convex, and the convex structure at the front extends into the two In the gap between the battery modules, the air inlet is provided at the raised structure. The combined cooling system device on the energy storage power supply system module according to claim 1 or 3, characterized in that: the air guide plate is vertically provided with sealing foam on both sides of the air inlet, And the sealing foam is close to the battery module to improve the sealing between the air guide plate and the battery module. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: blocking foam is provided on both sides of the air duct plate, and the blocking foam is close to the The battery module is used to improve the sealing between the air duct plate and the battery module. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: the air duct plate is L-shaped, and the length of the air duct plate is equal to the length of the two battery modules. The length of the gap between the air duct plates corresponds to the height of the battery module. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: an air outlet is provided on the side wall of the box where the air guide plate is installed, and the air exhaust outlet The mouth is connected with the guide cavity and corresponds to the air inlet; the fan is installed in the air outlet. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: two cross beams are arranged side by side and spaced apart on the bottom surface of the box; and the ribs are arranged on the two between beams and perpendicular to said beams; The lower end of the air guide plate is recessed inward to form a notch with a height corresponding to the height of the cross beam. The air guide plate overlaps one of the cross beams at the notch, and the ribs One end is mounted on the other said beam. The combined cooling system device on the energy storage power supply system module according to claim 8, wherein the height of the cross beam corresponds to the height of the ribs. The combined cooling system device on the energy storage power supply system module according to claim 1, characterized in that: the ventilation holes are arranged in a strip shape, and the area of the ventilation holes on the same wall is along the direction of the fan. Decrease in turn.