Lithium ion battery energy storage cabinet capable of preventing thermal runaway

Abstract

The utility model relates to the technical field of battery energy storage cabinets, in particular to a lithium ion battery energy storage cabinet capable of preventing thermal runaway, which comprises a cabinet body provided with filter holes and an exhaust channel, an exhaust fan and a positioning shaft are arranged in the exhaust channel, and more than two air deflectors are arranged on the surface of the positioning shaft along the circumferential direction. The two air guide plates are in clearance fit with the two opposite inner walls of the exhaust channel correspondingly; and the driving motor is connected with the positioning shaft. The lithium ion battery energy storage cabinet capable of preventing thermal runaway provided by the utility model can effectively prevent external dust or impurities and the like from entering the cabinet body while ensuring the heat dissipation efficiency, so that the internal cleanliness of the cabinet body is remarkably improved; and direct contact of dust or impurities and possible damage or performance reduction to a battery pack, a circuit board and other precise electronic elements are successfully avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery energy storage cabinet technical field especially relates to a kind of lithium ion battery energy storage cabinet of heat runaway prevention. BACKGROUND

[0002] The lithium ion battery energy storage cabinet of heat runaway prevention is a kind of energy storage system integrated with lithium ion battery, energy storage inverter, energy management system, battery management system and other electrical equipment. It effectively prevents battery thermal runaway through advanced thermal management and battery management technology, and ensures the safe, reliable and efficient operation of the system. The lithium ion battery energy storage cabinet of heat runaway prevention adopts fan, liquid cooling and other heat dissipation modes to ensure that the battery pack operates within the appropriate temperature range, prevents thermal runaway due to high temperature, and through thermal management and battery management technology, not only effectively prevents battery thermal runaway and reduces the risk of fire and explosion, but also ensures that the battery operates within the optimal temperature range and improves energy storage and discharge efficiency.

[0003] Chinese patent publication No. CN219979681U discloses a lithium ion battery energy storage cabinet of heat runaway prevention, relating to the technical field of lithium ion battery energy storage cabinet structure, the energy storage cabinet includes cabinet, battery module and prevention and control system, battery module is equipped with multiple, is arranged in cabinet according to law, the battery module includes battery monomer, drawer cabinet and clamping assembly, the battery monomer is arranged in drawer cabinet, adjacent drawer cabinet is positioned by clamping assembly, the prevention and control system includes water tank, main pipeline, branch pipeline and nozzle, the water tank is arranged at the bottom in cabinet, the main pipeline is communicated with water tank, the branch pipeline is connected with nozzle, electromagnetic valve and nozzle are located at the inner and outer sides of side wall respectively, the water tank is provided with refrigeration part. The lithium ion battery energy storage cabinet of heat runaway prevention of the utility model can prevent the risk of lithium ion battery thermal runaway, avoid the risk of adjacent battery thermal runaway caused by battery monomer thermal runaway, and improve the safety and reliability of the energy storage system.

[0004] In actual use, the lithium ion battery energy storage cabinet of heat runaway prevention usually relies on air cooling technology to effectively dissipate the heat generated by the battery pack and ensure stable operation of the system. However, the existing lithium ion battery energy storage cabinet of heat runaway prevention often keeps the ventilation openings open in the non-working state. Although this design facilitates air circulation during heat dissipation, it also allows dust, fine particulate matter and various impurities from the outside to easily enter the energy storage cabinet through these open ventilation openings. Not only can they adhere to the surface of the battery pack, affecting the effective dissipation of heat, but also can penetrate into more precise electronic components, threatening their performance and lifespan. This not only reduces the overall efficiency of the battery energy storage system, but also may cause safety hazards such as short circuit and overheating, making the lithium ion battery energy storage cabinet of heat runaway prevention less practical. SUMMARY

[0005] The utility model wants to solve the technical problem that provides a lithium ion battery energy storage cabinet of preventing heat runaway, avoids that dust or impurity of outside easily enters lithium ion battery energy storage cabinet inside.

[0006] In order to solve the above technical problem, the utility model adopts the technical scheme that a lithium ion battery energy storage cabinet of preventing heat runaway, including:

[0007] Cabinet body is equipped with filter hole and exhaust passage, is equipped with exhaust fan and positioning shaft in exhaust passage, the surface of positioning shaft is equipped with two above-mentioned air deflector along the circumferential direction, and two air deflectors are respectively corresponding with the clearance fit of two inner walls opposite exhaust passage;

[0008] Driving motor is connected with positioning shaft.

[0009] Further, the two inner walls opposite exhaust passage are each equipped with arc slot, and the air deflector is clearance fit with the arc slot, and the central angle corresponding to the arc slot is greater than or equal to the included angle between adjacent two air deflectors.

[0010] Further, the number of air deflectors is greater than or equal to three, and the included angle between any two adjacent air deflectors is equal.

[0011] Further, filter plate is equipped in exhaust passage, and the two inner walls opposite exhaust passage are respectively equipped with spigot and positioning slot, one end of filter plate is clamped with positioning slot, and the other end of filter plate is from spigot and is stretched out cabinet body outside.

[0012] Further, mounting shaft is equipped in exhaust passage, driving motor is connected with mounting shaft through transmission assembly, and mounting shaft is screw threadedly cooperated with adjusting plate, adjusting plate is slidingly connected with the inner wall of exhaust passage, and cleaning brush is arranged on adjusting plate and is abutted with filter plate.

[0013] Further, the surface of mounting shaft is equipped with screw thread reciprocating groove, and adjusting plate is equipped with fixed pin and is screw threadedly cooperated with screw thread reciprocating groove.

[0014] Further, the inner wall of exhaust passage is equipped with limiting slot, and adjusting plate is equipped with limiting plate and is slidingly connected with limiting slot.

[0015] Further, the inner chamber of cabinet body is divided into electrical chamber and exhaust passage through partition plate, filter hole is located on the side wall of electrical chamber, and exhaust fan is installed on partition plate.

[0016] Further, cabinet body includes energy storage cabinet main body and exhaust box and is communicated with each other, partition plate is arranged in cabinet body, and partition plate and the inner wall of energy storage cabinet main body and the inner wall of exhaust box are enclosed to form exhaust passage, positioning shaft is arranged in exhaust box, and two air deflectors are respectively corresponding with the clearance fit of two inner walls opposite exhaust box.

[0017] Further, two above-mentioned bearing plates are equipped in cabinet body.

[0018] The utility model discloses a beneficial effect lies in: a kind of lithium ion battery energy storage cabinet of heat runaway prevention, when needing to heat dissipation to lithium ion battery energy storage cabinet, need to start exhaust fan, exhaust fan will pass through filter hole The cold air of outside is extracted to the cabinet, the hot air in the cabinet can be extracted to exhaust passage, then start drive motor and drive locating shaft rotation, locating shaft will drive multiple air deflector rotation, to be able to discharge hot air, when the cabinet stops heat dissipation, multiple air deflector cooperation exhaust passage is closed, can effectively avoid that dust or impurity etc. Into the cabinet, not only significantly improve the cleanliness of cabinet interior, but also successfully avoid dust or impurity direct contact and possibly cause damage or performance decline to battery pack, circuit board and other precision electronic components. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural diagram of lithium ion battery energy storage cabinet of heat runaway prevention;

[0020] Figure 2 It is the main view section schematic diagram of lithium ion battery energy storage cabinet of heat runaway prevention;

[0021] Figure 3 It is the appearance schematic diagram of exhaust box of lithium ion battery energy storage cabinet of heat runaway prevention;

[0022] Figure 4 It is the section schematic diagram of exhaust box of lithium ion battery energy storage cabinet of heat runaway prevention;

[0023] Label explanation:

[0024] 1, energy storage cabinet main part;2, cabinet door;3, bearing plate;4, battery pack;5, partition plate;6, exhaust fan;7, exhaust box;8, filter plate;9, locating shaft;10, mounting shaft;11, clamping plate;12, heat dissipation hole;13, filter hole;14, air deflector;15, drive motor;16, transmission belt;17, adjusting plate;18, cleaning brush;19, fixed pin;20, limit plate. DETAILED DESCRIPTION

[0025] To explain the technical content of the utility model, the purpose and effect realized, the following will be explained in conjunction with the drawings.

[0026] Please refer to Figures 1 to 4 The utility model discloses a lithium ion battery energy storage cabinet of heat runaway prevention, including:

[0027] Cabinet, be equipped with filter hole 13 and exhaust passage, be equipped with exhaust fan 6 and locating shaft 9 in exhaust passage, the surface of locating shaft 9 is equipped with two pieces above and beyond air deflector 14 along the circumferential direction, two pieces air deflector 14 respectively corresponding with the gap cooperation of two inner walls opposite exhaust passage;

[0028] The driving motor 15 is connected with the positioning shaft 9.

[0029] From the above description, the beneficial effects of the utility model lie in: when the lithium ion battery energy storage cabinet needs to be cooled, the exhaust fan 6 needs to be started, the exhaust fan 6 will draw the external cold air into the cabinet through the filter hole 13, the hot air in the cabinet can be drawn into the exhaust passage, then the driving motor 15 is started to drive the positioning shaft 9 to rotate, the positioning shaft 9 drives the multiple air deflectors 14 to rotate, so that the hot air can be discharged, when the cabinet stops cooling, the multiple air deflectors 14 cooperate to close the exhaust passage, which can effectively prevent the external dust or impurities from entering the cabinet, not only significantly improves the cleanliness of the cabinet, but also successfully avoids the direct contact of the dust or impurities with the battery pack 4, the circuit board and other precision electronic components, and the damage or performance decline caused by the direct contact.

[0030] In an optional embodiment, the two inner walls of the exhaust passage are each provided with an arc-shaped groove, the air deflector 14 is in clearance fit with the arc-shaped groove, and the central angle corresponding to the arc-shaped groove is greater than or equal to the included angle between the two adjacent air deflectors 14.

[0031] From the above description, through the design, the multiple air deflectors 14 matched with the arc-shaped groove can not only effectively discharge the heat in the energy storage cabinet main body 1 when rotating, but also can close the arc-shaped groove by locating the multiple air deflectors 14 in the arc-shaped groove when stopping cooling, so that the exhaust passage can be closed to prevent the external dust or impurities from entering the lithium ion battery energy storage cabinet.

[0032] In an optional embodiment, the number of the air deflectors 14 is greater than or equal to three, and the included angle between any two adjacent air deflectors 14 is equal.

[0033] From the above description, the above design can ensure that at least two air deflectors 14 cooperate to close the exhaust passage when stopping cooling.

[0034] In an optional embodiment, the exhaust passage is provided with a filter plate 8, the two inner walls of the exhaust passage are respectively provided with a socket and a positioning groove, one end of the filter plate 8 is clamped with the positioning groove, and the other end of the filter plate 8 extends out of the cabinet from the socket.

[0035] From the above description, through the detachable filter plate 8, the clogged dust or impurities on the filter plate 8 can be conveniently cleaned, so that the filter plate 8 can effectively filter the dust or impurities in the external environment and the energy storage cabinet main body 1.

[0036] In an optional embodiment, the air exhaust channel is provided with a mounting shaft 10, a driving motor 15 is connected with the mounting shaft 10 through a transmission assembly, an adjusting plate 17 is threadedly connected with the mounting shaft 10, the adjusting plate 17 is slidably connected with the inner wall of the air exhaust channel, and the adjusting plate 17 is provided with a cleaning brush 18 abutting against the filter plate 8.

[0037] From the above description, it can be known that, through the design, when the adjusting plate 17 moves, the cleaning brush 18 can be driven to move on one side of the filter plate 8, so that the dust or impurities blocked on the filter plate 8 can be conveniently and effectively cleaned, the dust or impurity filtering effect of the lithium ion battery energy storage cabinet is guaranteed, and the lithium ion battery energy storage cabinet can better prevent heat runaway.

[0038] In an optional embodiment, the surface of the mounting shaft 10 is provided with a threaded reciprocating groove, and the adjusting plate 17 is provided with a fixing pin 19 threadedly connected with the threaded reciprocating groove.

[0039] From the above description, it can be known that, when the mounting shaft 10 rotates, the fixing pin 19 can be driven to reciprocate left and right through the threaded reciprocating groove on the outside, so that the adjusting plate 17 and the cleaning brush 18 can be driven to move.

[0040] In an optional embodiment, the inner wall of the air exhaust channel is provided with a limiting groove, and the adjusting plate 17 is provided with a limiting plate 20 slidably connected with the limiting groove.

[0041] From the above description, it can be known that, the two limiting grooves cooperate with the two limiting plates 20 to limit the position of the adjusting plate 17, so that the position of the adjusting plate 17 is prevented from deviating, and the cleaning brush 18 can effectively clean the dust or impurities on the filter plate 8.

[0042] In an optional embodiment, the inner cavity of the cabinet body is divided into an electrical chamber and an air exhaust channel through a partition plate 5, the filter hole 13 is located on the side wall of the electrical chamber, and the air extractor 6 is mounted on the partition plate 5.

[0043] In an optional embodiment, the cabinet body is provided with a cabinet door 2 corresponding to the side wall of the electrical chamber.

[0044] In an optional embodiment, the cabinet body comprises an energy storage cabinet main body 1 and an air exhaust box 7 which are in communication with each other, the partition plate 5 is arranged in the cabinet body, the partition plate 5 and the inner walls of the energy storage cabinet main body 1 and the air exhaust box 7 form the air exhaust channel, the positioning shaft 9 is arranged in the air exhaust box 7, and the two air deflectors 14 are respectively gap-fitted with the two inner walls opposite to the air exhaust box 7.

[0045] Further, two or more bearing plates 3 are arranged in the cabinet body.

[0046] Please refer to Figures 1 to 4 The embodiment one of the utility model is:

[0047] The energy storage cabinet main body 1 is provided with a cabinet door 2 on the side wall, and is internally provided with a partition plate 5; an air extractor 6 is arranged on the partition plate 5, one end of the energy storage cabinet main body 1 is connected with an exhaust box 7, one end of the exhaust box 7 is provided with a filter plate 8, arc-shaped grooves are formed in the inner wall of the exhaust box 7, and a positioning shaft 9 is rotatably connected between the two arc-shaped grooves;

[0048] An installation shaft 10 is arranged at one end in the exhaust box 7, and the positioning shaft 9 and one end of the installation shaft 10 both penetrate through one side of the exhaust box 7 and extend to the outside.

[0049] As shown in Figure 2 , Figure 3 and Figure 4 , the circumferential surface of the positioning shaft 9 is provided with a plurality of air guide plates 14 matched with the arc-shaped grooves, and the plurality of air guide plates 14 are uniformly arranged on the outer side of the positioning shaft 9.

[0050] As shown in Figure 1 and Figure 3 , a driving motor 15 is mounted outside the exhaust box 7, one end of the positioning shaft 9 is arranged on the output end of the driving motor 15, the positioning shaft 9 and one end of the installation shaft 10 are both provided with belt pulleys, the two belt pulleys are provided with the same transmission belt 16, and the positioning shaft 9 can drive the installation shaft 10 to rotate synchronously through the transmission belt 16.

[0051] As shown in Figure 4 , the inner wall of the exhaust box 7 is provided with a positioning groove matched with the filter plate 8, the lower end of the filter plate 8 is inserted into the positioning groove, and the upper end of the filter plate 8 penetrates the insertion hole and extends to the outside.

[0052] As shown in Figure 2 and Figure 4 , an adjusting plate 17 is sleeved on the installation shaft 10, the adjusting plate 17 is provided with an installation hole threaded matched with the installation shaft 10, one side of the adjusting plate 17 is provided with a cleaning brush 18, and one side of the cleaning brush 18 abuts against one side of the filter plate 8.

[0053] As shown in Figure 4 , a threaded reciprocating groove is formed in the outer side of the installation shaft 10, a fixing pin 19 matched with the threaded reciprocating groove is arranged on one side of the installation hole, and one end of the fixing pin 19 is located in the threaded reciprocating groove and is slidably connected with the side wall of the threaded reciprocating groove.

[0054] Limiting grooves are formed in the upper and lower sides of the inner wall of the exhaust box 7, limiting plates 20 matched with the limiting grooves are arranged at both ends of the adjusting plate 17, and the two limiting plates 20 are respectively located in the two limiting grooves and are slidably connected with the side walls of the limiting grooves.

[0055] As shown in Figure 1 and Figure 2 , the second embodiment of the utility model is that a plurality of bearing plates 3 are arranged in the energy storage cabinet main body 1, and the plurality of bearing plates 3 are all provided with battery groups 4. Figure 2As shown, the inner wall of the energy storage cabinet body 1 is provided with clamping plates 11 on both sides, a plurality of clamping plates 11 are provided with clamping grooves matched with the bearing plate 3, and the two ends of the bearing plate 3 are located in the clamping grooves on both sides and are in sliding connection with the side walls of the clamping grooves. Through the plurality of clamping plates 11, the position of the bearing plate 3 and the battery pack 4 can be supported, and the bearing plate 3 can be moved outward, facilitating the placement or taking of the battery pack 4.

[0056] Please refer to Figure 1 and Figure 2 As shown, the plurality of bearing plates 3 are provided with a plurality of heat dissipation holes 12, the plurality of heat dissipation holes 12 can more effectively dissipate the heat generated by the battery pack 4, and the energy storage cabinet body 1 is provided with a plurality of filter holes 13 on both sides, and the plurality of filter holes 13 are located between the plurality of bearing plates 3. The plurality of filter holes 13 located between the plurality of bearing plates 3 not only prevent dust and impurities from entering the energy storage cabinet body 1, but also uniformly dissipate heat for the battery pack 4 at different positions, thereby effectively preventing the lithium ion battery energy storage cabinet from thermal runaway.

[0057] In summary, the lithium ion battery energy storage cabinet with heat runaway prevention of the utility model, through the positioning shaft arranged in the arc-shaped groove and the plurality of air deflectors, cooperating with the positioning groove matched with the air deflector, not only ensures that the hot air in the lithium ion battery energy storage cabinet can be smoothly and efficiently discharged, but also can close the arc-shaped groove by using the air deflector when the exhaust operation is not needed, thereby effectively blocking the dust, impurities and other potential pollutants in the outside from entering the inside of the lithium ion battery energy storage cabinet. Not only significantly improves the cleanliness of the inside of the energy storage cabinet, but also successfully avoids the damage or performance degradation of the battery pack, circuit board and other precision electronic components caused by direct contact with dust or impurities, thereby greatly enhancing the overall practicality, durability and operation stability of the lithium ion battery energy storage cabinet with heat runaway prevention. Through the threaded reciprocating groove opened on the outside of the mounting shaft, the fixed pin and the cleaning brush can be driven to move left and right reciprocally, which can effectively clean the dust, impurities and other particles that may be blocked on the filter plate. Not only convenient, but also very effective, significantly improves the permeability and working efficiency of the filter plate, so that it can more smoothly and effectively discharge the hot air generated in the lithium ion battery energy storage cabinet, thereby not only ensuring the heat dissipation effect of the lithium ion battery energy storage cabinet with heat runaway prevention, but also prolonging the service life of the filter plate, thereby improving the stability and reliability of the entire energy storage system.

[0058] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation or direct or indirect application in related technical fields based on the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A thermal runaway prevention lithium ion battery energy storage cabinet, characterized in that, The utility model relates to a cabinet, and more particularly to a cabinet with a filter hole and an exhaust channel. The utility model discloses a cabinet with a filter hole and an exhaust channel. The exhaust channel is provided with an exhaust fan and a positioning shaft.

2. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 1, wherein, The positioning shaft is provided with two or more than two air deflectors on its surface.

3. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 1, wherein, The exhaust channel is provided with an arc-shaped slot on its two opposite inner walls.

4. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 1, wherein, The air deflectors are in clearance fit with the arc-shaped slots.

5. The thermal runaway preventing lithium-ion battery energy storage cabinet of claim 4, wherein, The arc-shaped slots correspond to a central angle greater than or equal to the included angle between two adjacent air deflectors.

6. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 5, wherein, The number of air deflectors is greater than or equal to three.

7. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 5, wherein, The included angle between any two adjacent air deflectors is equal.

8. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 1, wherein, The exhaust channel is provided with a filter plate.

9. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 8, wherein, The two opposite inner walls of the exhaust channel are respectively provided with a socket and a positioning slot.

10. The thermal runaway resistant lithium-ion battery energy storage cabinet of claim 1, wherein, One end of the filter plate is in clamping connection with the positioning slot, and the other end of the filter plate extends out of the cabinet from the socket. The exhaust channel is provided with a mounting shaft. The drive motor is connected with the mounting shaft through a transmission assembly. The mounting shaft is provided with a regulating plate in screw thread fit. The regulating plate is in sliding connection with the inner wall of the exhaust channel. The regulating plate is provided with a cleaning brush in abutment with the filter plate. The surface of the mounting shaft is provided with a screw thread reciprocating groove. The regulating plate is provided with a fixing pin in screw thread fit with the screw thread reciprocating groove. The inner wall of the exhaust channel is provided with a limiting slot. The regulating plate is provided with a limiting plate in sliding connection with the limiting slot. The inner cavity of the cabinet is divided into an electrical chamber and an exhaust channel by a partition plate. The filter hole is located on the side wall of the electrical chamber. The exhaust fan is installed on the partition plate. The cabinet comprises an energy storage cabinet main body and an exhaust box in communication with each other. The partition plate is arranged in the cabinet. The partition plate, the inner wall of the energy storage cabinet main body and the inner wall of the exhaust box enclose to form an exhaust channel. The positioning shaft is arranged in the exhaust box. Two air deflectors are in clearance fit with the two opposite inner walls of the exhaust box respectively. The cabinet is provided with two or more than two bearing plates.

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