Lithium battery energy storage device

Abstract

The invention discloses a lithium battery energy storage device, and relates to the technical field of lithium batteries, the lithium battery energy storage device comprises a heat conduction rack, the heat conduction rack comprises a transverse heat conduction plate and a plurality of vertical heat conduction plates, the top end of the transverse heat conduction plate is fixedly provided with a second communication plate, and the bottom end of the transverse heat conduction plate is fixedly provided with a first communication plate; the first communication plate is fixedly mounted on the bottom plate, and a piston frame is mounted in the heat conduction frame in a liftable manner; wherein a plurality of second heat dissipation blades are fixedly installed on the upper surface of the second communication plate, a plurality of first heat dissipation blades are fixedly installed on the lower surface of the first communication plate, a first piston rod is slidably installed in each first heat dissipation blade, and a first spring is fixedly installed between each first piston rod and the corresponding first heat dissipation blade; and the multiple energy storage units are distributed in the height direction of the heat conduction frame at equal intervals, and the heat dissipation speed of the lithium battery can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to a lithium battery energy storage device. Background Art

[0002] The working principle of lithium battery energy storage equipment is to move lithium ions from the positive electrode through the electrolyte to the negative electrode for storage during charging, and flow in the opposite direction during discharge. This chemical reaction enables lithium batteries to charge and discharge quickly, and has the characteristics of high energy density and long cycle life. Currently, lithium battery energy storage equipment can be used for energy storage in home, commercial and industrial fields, such as solar photovoltaic power generation systems.

[0003] Lithium battery energy storage devices have a wide range of applications, and people are more concerned about the safety performance of lithium battery energy storage devices. Lithium batteries generate heat during operation. If the heat dissipation is poor or the ambient temperature is too high, it will lead to thermal runaway of the battery, that is, the internal temperature of the battery continues to rise and cannot be effectively controlled, eventually causing spontaneous combustion, and in severe cases, explosion; existing lithium battery energy storage devices mainly rely on air cooling for heat dissipation, and a plurality of lithium batteries are installed in the lithium battery energy storage device. The plurality of lithium batteries are neatly arranged inside the energy storage device, and there is no gap between two adjacent lithium batteries, resulting in a slow heat dissipation speed of the lithium battery. Therefore, in order to solve the above technical problems, the present invention provides a lithium battery energy storage device. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a lithium battery energy storage device that can accelerate the heat dissipation speed of the lithium battery.

[0005] To achieve the above object, the present invention provides the following technical solution: a lithium battery energy storage device, comprising: A heat-conducting frame, the heat-conducting frame comprises a transverse heat-conducting plate and a plurality of vertical heat-conducting plates, the plurality of vertical heat-conducting plates are fixedly installed at equal intervals in the length direction of the transverse heat-conducting plate, and an installation space is formed between two adjacent vertical heat-conducting plates, a second connecting plate is fixedly installed on the top end of the transverse heat-conducting plate, a first connecting plate is fixedly installed on the bottom end of the transverse heat-conducting plate, and the first connecting plate is fixedly installed on the bottom plate, a piston frame is installed inside the heat-conducting frame in a movably manner, and a temperature sensor is fixedly installed on the upper surface and the lower surface of the piston frame; A plurality of second heat dissipation blades are fixedly mounted on the upper surface of the second connecting plate, a plurality of first heat dissipation blades are fixedly mounted on the lower surface of the first connecting plate, a first piston rod is slidably mounted inside each first heat dissipation blade, and a first spring is fixedly mounted between the first piston rod and the first heat dissipation blade; The energy storage unit is provided in plurality, and the plurality of energy storage units are evenly spaced and distributed in the height direction of the heat conducting frame, wherein the energy storage unit comprises: The mounting frame includes a second mounting plate and a first mounting plate detachably connected to the second mounting plate, wherein a plurality of support platforms are fixedly mounted on the second mounting plate; A plurality of lithium batteries are provided, and two adjacent lithium batteries are fixedly connected via a first connecting plate. The lithium batteries are installed on a support platform, and the lithium batteries are arranged in an installation space.

[0006] Preferably, the first mounting plate, the second mounting plate and the plurality of lithium batteries form a heat dissipation channel, a bending tube is fixedly installed inside the transverse heat conducting plate, an air pump is fixedly installed on the bottom plate, one end of the bending tube is fixedly connected to the air delivery end of the air pump, an exhaust pipe is fixedly installed on the other end of the bending tube, a plurality of air outlet holes are provided on the exhaust pipe, and a channel opening is provided on the bottom plate.

[0007] Preferably, a second piston rod is slidably installed inside each second heat dissipation blade, and a second spring is fixedly installed between the second piston rod and the second heat dissipation blade; a plurality of drain pipes are arranged on the vertical heat conduction plate, and a drain pipe is correspondingly arranged above each lithium battery, a plurality of spray heads are fixedly installed on the drain pipes, a connecting pipe is fixedly installed on one end of each drain pipe, the drain pipe is connected with the interior of the vertical heat conduction plate through the connecting pipe, an electric control valve is fixedly installed on the connecting pipe, and a first smoke sensor is fixedly installed on the electric control valve.

[0008] Preferably, the heat-conducting frame is filled with insulating heat-dissipating liquid.

[0009] Preferably, a threaded rod is rotatably installed in the transverse heat conducting plate, one end of the threaded rod passes through the interior of the piston frame and is threadedly connected to the piston frame, a motor is fixedly installed on the bottom plate, and the output end of the motor is fixedly connected to one end of the threaded rod.

[0010] Preferably, a plurality of pressure rods are fixedly mounted on the first mounting plate.

[0011] Preferably, three or more universal wheels are installed on the lower surface of the base plate.

[0012] Compared with the prior art, the present invention provides a lithium battery energy storage device, which has the following beneficial effects: The heat conducting frame is configured to be composed of a transverse heat conducting plate and a plurality of vertical heat conducting plates, and a piston frame is installed in the heat conducting frame so as to be liftable, a plurality of second heat dissipation blades are fixedly installed on the upper surface of the second connecting plate, a plurality of first heat dissipation blades are fixedly installed on the lower surface of the first connecting plate, a first piston rod is slidably installed inside each first heat dissipation blade, a first spring is fixedly installed between the first piston rod and the first heat dissipation blade, the first heat dissipation blade and the second heat dissipation blade can dissipate heat in the liquid, so that there is always liquid with a low temperature in the heat conducting frame, so that the heat conducting frame can fully and comprehensively absorb the heat from the lithium battery, and avoid partial areas on the lithium battery being blocked, resulting in the blocked part of the lithium battery being prone to accumulate a large amount of heat, and the accumulation of heat not only affects the service life of the lithium battery, but may even cause the risk of spontaneous combustion; A bent tube is fixedly installed inside the transverse heat conducting plate, an exhaust pipe is fixedly installed on the other end of the bent tube, a plurality of air outlet holes are opened on the exhaust pipe, a channel opening is opened on the bottom plate, and an air pump is used to transport the outside air into the bent tube. The liquid in the transverse heat conducting plate can absorb the heat in the air, so that the temperature of the air entering the heat dissipation channel is lower, thereby improving the heat dissipation speed of the lithium battery; A second piston rod is slidably installed inside each second heat dissipation blade, and a second spring is fixedly installed between the second piston rod and the second heat dissipation blade; a plurality of drain pipes are arranged on the vertical heat conduction plate, a plurality of spray heads are fixedly installed on the drain pipes, a connecting pipe is fixedly installed on one end of each drain pipe, an electric control valve is fixedly installed on the connecting pipe, and a first smoke sensor is fixedly installed on the electric control valve; the liquid in the heat conduction frame is set as insulating heat dissipation liquid, the piston frame can press the insulating heat dissipation liquid in the heat conduction frame into the drain pipe, and the plurality of spray heads spray it on the self-igniting lithium battery to prevent the fire from increasing and avoid threatening people's lives and property.

[0013] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the lithium battery energy storage device of the present invention; Figure 3 It is a structural schematic diagram of the lower surface of the bottom plate of the present invention; Figure 4 It is a schematic diagram of the disassembled structure of the first heat dissipation blade, the first piston rod and the first spring in the present invention; Figure 5 It is a schematic diagram of the disassembled structure of the second heat dissipation blade, the second piston rod and the second spring in the present invention; Figure 6 It is a schematic diagram of the structure of the heat conducting frame and the lithium battery in the present invention; Figure 7 It is a schematic diagram of the structure of the heat conducting frame in the present invention; Figure 8 It is a schematic diagram of the structure of the liquid discharge pipe, the electric control valve and the first smoke sensor in the present invention; Fig. 9 is a schematic diagram of the cross-sectional structure of the heat conducting frame in the present invention; Fig.10 It is a schematic diagram of the structure of the piston frame, the air delivery pump, the bending pipe and the exhaust pipe in the present invention; Fig.11 It is a schematic diagram of the structure of the first mounting plate, the second mounting plate and the support platform in the present invention; Fig.12 It is a schematic structural diagram of the second mounting plate in the present invention.

[0015] In the figure: 10. Bottom plate; 101. Passage opening; 102. Universal wheel; 11. First mounting plate; 111. Pressure rod; 12. Second mounting plate; 13. Support platform; 14. Fixing rod; 15. Connecting block; 16. Sealing rod; 20. lithium battery; 21. first connecting plate; 22. second connecting plate; 23. third connecting plate; 30. Horizontal heat conduction plate; 31. Vertical heat conduction plate; 32. First connecting plate; 33. Second connecting plate; 34. Second heat dissipation blade; 341. Second piston rod; 342. Second spring; 35. First heat dissipation blade; 351. First piston rod; 352. First spring; 36. Piston rack; 40. Motor; 41. Threaded rod; 50. air pump; 51. bending pipe; 52. exhaust pipe; 60. Drain pipe; 601. Sprinkler head; 602. Connecting pipe; 63. Electric control valve; 64. First smoke sensor. DETAILED DESCRIPTION

[0016] The following is combined with Figures 1 to 12The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0017] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Example

[0019] Please combine Figures 1 to 12 As shown, the present invention provides a lithium battery energy storage device, which includes: A heat conducting frame, the heat conducting frame comprises a transverse heat conducting plate 30 and a plurality of vertical heat conducting plates 31, the plurality of vertical heat conducting plates 31 are fixedly installed at equal intervals in the length direction of the transverse heat conducting plate 30, and an installation space is formed between two adjacent vertical heat conducting plates 31, a second connecting plate 33 is fixedly installed on the top end of the transverse heat conducting plate 30, a first connecting plate 32 is fixedly installed on the bottom end of the transverse heat conducting plate 30, and the first connecting plate 32 is fixedly installed on the bottom plate 10; Among them, a plurality of second heat dissipation blades 34 are fixedly installed on the upper surface of the second connecting plate 33, a second spring 342 is fixedly installed between the second piston rod 341 and the second heat dissipation blade 34, a plurality of first heat dissipation blades 35 are fixedly installed on the lower surface of the first connecting plate 32, each first heat dissipation blade 35 is connected to the internal cavity of the first connecting plate 32, a first piston rod 351 is slidably installed inside each first heat dissipation blade 35, and a first spring 352 is fixedly installed between the first piston rod 351 and the first heat dissipation blade 35; the heat conduction frame A piston rack 36 is slidably arranged inside, a threaded rod 41 is rotatably arranged inside the transverse heat conducting plate 30, one end of the threaded rod 41 penetrates the inside of the piston rack 36 and is threadedly connected to the piston rack 36, a motor 40 is fixedly installed on the bottom plate 10, and the output end of the motor 40 is fixedly connected to one end of the threaded rod 41, so that the piston rack 36 is lifted and lowered inside the heat conducting rack, and the liquid in the heat conducting rack is transported to the plurality of second heat dissipation blades 34 or the plurality of first heat dissipation blades 35, and the heat in the liquid is dissipated by the plurality of second heat dissipation blades 34 or the plurality of first heat dissipation blades 35; The lithium battery energy storage device also includes an energy storage unit, and a plurality of energy storage units are provided. The plurality of energy storage units are evenly spaced and distributed in the height direction of the heat conducting frame, wherein the energy storage unit includes: The mounting frame includes a first mounting plate 11 and a second mounting plate 12, a pair of second mounting plates 12 are provided, the two second mounting plates 12 are fixedly connected by a fixing rod 14, the first mounting plate 11 and the two second mounting plates 12 are fixedly connected by a plurality of bolts, a plurality of support platforms 13 are fixedly mounted on the fixing rod 14, each support platform 13 can be inserted into the mounting space, and a sealing rod 16 is fixedly connected between two adjacent support platforms 13; A plurality of lithium batteries 20 are provided, and two adjacent lithium batteries 20 are fixedly connected by a first connecting plate 21. The lithium batteries 20 are installed on the support platform 13. The lithium batteries 20 are arranged in the installation space. Each lithium battery 20 is attached to the outer surface of the heat-conducting frame. When the lithium battery energy storage device is used, the heat generated by the lithium battery 20 will be transferred to the heat-conducting frame, and finally the heat will be absorbed by the liquid in the heat-conducting frame. The temperature of the liquid in the heat-conducting frame will continue to rise. Since temperature sensors are fixedly installed on the upper surface and the lower surface of the piston frame 36, The temperature sensor is not shown in the figure. The piston rack 36 divides the internal cavity of the heat-conducting rack into two parts. When the temperature sensor on the lower surface of the piston rack 36 detects that the temperature of the liquid is too high, the motor 40 drives the threaded rod 41 to rotate, so that the piston rack 36 moves from the top end of the transverse heat-conducting plate 30 to the bottom end of the transverse heat-conducting plate 30. The piston rack 36 presses the liquid in the heat-conducting rack down to the multiple first heat-dissipating blades 35, and the multiple first heat-dissipating blades 35 dissipate the heat in the liquid. The liquid in the multiple second heat-dissipating blades 34 enters the heat-conducting plate 30 under the action of gravity. When the temperature sensor on the upper surface of the piston frame 36 detects that the temperature of the liquid is too high, the piston frame 36 moves from the bottom end of the transverse heat conducting plate 30 to the top end of the transverse heat conducting plate 30, and the piston frame 36 pushes the liquid in the heat conducting frame to the plurality of second heat dissipating blades 34, and the heat in the liquid is dissipated by the plurality of second heat dissipating blades 34. During the rising process of the piston frame 36, the first piston rod 351 moves toward the top of the first heat dissipating blade 35 under the elastic force of the first spring 352, and the first heat dissipating blade 35 is dissipated. The liquid in the sheet 35 is pushed into the heat-conducting frame, so that there is always liquid with a low temperature in the heat-conducting frame. The liquid is used to quickly absorb the heat from the lithium battery 20, so that the lithium battery 20 is quickly cooled down. The heat-conducting frame can be in full contact with multiple lithium batteries 20, so that the heat-conducting frame can fully and comprehensively absorb the heat from multiple lithium batteries 20, avoiding partial areas on the lithium battery 20 from being blocked, resulting in the blocked parts of the lithium battery 20 easily accumulating a large amount of heat. The accumulation of heat not only affects the service life of the lithium battery 20, but may even cause the risk of spontaneous combustion.

[0020] It should be noted that the connection method between two adjacent energy storage units is now introduced. The two second mounting plates 12 in the two energy storage units are connected by a connecting block 15 and bolts; the lithium batteries 20 between the two energy storage units located on the same plane are connected by a second connecting plate 22, and the two energy storage units are connected in the height direction by a third connecting plate 23.

[0021] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working method, as described below for details. Example

[0022] The first mounting plate 11, the second mounting plate 12 and the plurality of lithium batteries 20 form a heat dissipation channel. A bent tube 51 is fixedly installed inside the transverse heat conducting plate 30. An air pump 50 is fixedly installed on the bottom plate 10. One end of the bent tube 51 is fixedly connected to the air supply end of the air pump 50. An exhaust pipe 52 is fixedly installed on the other end of the bent tube 51. The exhaust pipe 52 is arranged at the top of the heat dissipation channel. The exhaust pipe 52 is provided with a plurality of air outlets. A channel opening 101 is provided on the bottom plate 10. A large amount of heat is also generated at the connection of the plurality of lithium batteries 20. The air pump 50 transports the outside air into the bent tube 51. Since the bent tube 51 is located inside the transverse heat conducting plate 30, the liquid in the transverse heat conducting plate 30 can absorb the heat in the air and cool down the air entering the heat dissipation channel, so that the temperature of the air entering the heat dissipation channel is lower, which can improve the heat dissipation speed of the lithium batteries 20 and avoid the problem that the air temperature entering the heat dissipation channel is higher and the heat dissipation speed of the plurality of lithium batteries 20 is slower. Example

[0023] When the lithium battery energy storage device is in use, if spontaneous combustion occurs, people's life safety will be seriously threatened. In order to prevent the lithium battery energy storage device from spontaneous combustion, each second heat dissipation blade 34 is connected to the inner cavity of the second connecting plate 33, and a second piston rod 341 is slidably installed inside each second heat dissipation blade 34; A plurality of drain pipes 60 are arranged on the vertical heat conducting plate 31, and a drain pipe 60 is arranged above each lithium battery 20. A plurality of spray heads 601 are fixedly mounted on the drain pipe 60. A connecting pipe 602 is fixedly mounted on one end of each drain pipe 60. The drain pipe 60 is connected to the interior of the vertical heat conducting plate 31 through the connecting pipe 602. An electric control valve 63 is fixedly mounted on the connecting pipe 602. A first smoke sensor 64 is fixedly mounted on the electric control valve 63. When one or more lithium batteries 20 in the lithium battery energy storage device spontaneously ignite, When the lithium battery 20 starts to self-ignite, smoke will be generated, and the smoke will contact the nearest first smoke sensor 64. When the first smoke sensor 64 detects smoke, it will control the corresponding electric control valve 63 to open, and then the motor 40 drives the threaded rod 41 to rotate, so that the piston frame 36 rises or falls inside the heat-conducting frame. Since the second heat dissipation blade 34 is provided with a second piston rod 341, and the first heat dissipation blade 35 is provided with a first piston rod 351, it can prevent liquid from entering the second heat dissipation blade 34 or the first heat dissipation blade 35, so that The liquid in the heat-conducting frame is pressed into the drain pipe 60 and sprayed on the self-igniting lithium battery 20 by multiple spray heads 601 to prevent the fire from increasing and avoid threatening people's lives and property. The liquid in the heat-conducting frame can be set to an insulating heat-dissipating liquid. The insulating heat-dissipating liquid can be selected from 3M fluoride liquid. 3M fluoride liquid has excellent thermal conductivity and can effectively absorb the heat from the lithium battery 20. 3M fluoride liquid is insulating and non-flammable. After the 3M fluoride liquid is sprayed in the lithium battery energy storage device, it can not only effectively extinguish the fire, but also will not cause the lithium battery to burn. In the event of a short circuit in the battery 20, even if the 3M fluoride liquid insulation comes into contact with other normal lithium batteries 20, it will not affect the normal use of the lithium battery 20. You only need to replace the spontaneously combusted lithium battery 20 to continue using it normally, avoiding the entire lithium battery energy storage device from being unable to continue using due to damage to individual lithium batteries 20, causing economic losses. In addition, when one or more lithium batteries 20 spontaneously combust, only a few discharge pipes 60 that are close to the lithium battery 20 spray out the 3M fluoride liquid, so the utilization rate of the 3M fluoride liquid is high.

[0024] Finally, it should be noted that a plurality of pressure rods 111 are fixedly mounted on the first mounting plate 11. After the first mounting plate 11 is mounted on the second mounting plate 12, the pressure rods 111 fit against the top of the lithium battery 20 to fix the lithium battery 20 in the installation space to prevent the lithium battery 20 from shaking during transportation. More than three universal wheels 102 are installed on the lower surface of the base plate 10 to reduce the difficulty of moving the lithium battery energy storage device.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A lithium battery energy storage device, characterized in that: include: A heat-conducting frame, the heat-conducting frame comprising a transverse heat-conducting plate (30) and a plurality of vertical heat-conducting plates (31), the plurality of vertical heat-conducting plates (31) being fixedly installed at equal intervals in the length direction of the transverse heat-conducting plate (30), and an installation space being formed between two adjacent vertical heat-conducting plates (31), a second connecting plate (33) being fixedly installed on the top end of the transverse heat-conducting plate (30), a first connecting plate (32) being fixedly installed on the bottom end of the transverse heat-conducting plate (30), the first connecting plate (32) being fixedly installed on the bottom plate (10), a piston frame (36) being installed inside the heat-conducting frame in a movably movable manner, and temperature sensors being fixedly installed on the upper surface and the lower surface of the piston frame (36); A plurality of second heat dissipation blades (34) are fixedly mounted on the upper surface of the second connecting plate (33), a plurality of first heat dissipation blades (35) are fixedly mounted on the lower surface of the first connecting plate (32), a first piston rod (351) is slidably mounted inside each first heat dissipation blade (35), and a first spring (352) is fixedly mounted between the first piston rod (351) and the first heat dissipation blade (35); The energy storage unit is provided in plurality, and the plurality of energy storage units are evenly spaced and distributed in the height direction of the heat conducting frame, wherein the energy storage unit comprises: The mounting frame comprises a second mounting plate (12) and a first mounting plate (11) detachably connected to the second mounting plate (12), wherein a plurality of support platforms (13) are fixedly mounted on the second mounting plate (12); A plurality of lithium batteries (20) are provided, and two adjacent lithium batteries (20) are fixedly connected via a first connecting plate (21). The lithium batteries (20) are mounted on a support platform (13), and the lithium batteries (20) are arranged in the installation space.

2. A lithium battery energy storage device according to claim 1, characterized in that: The first mounting plate (11), the second mounting plate (12) and the plurality of lithium batteries (20) form a heat dissipation channel; a bent tube (51) is fixedly mounted inside the transverse heat conducting plate (30); an air pump (50) is fixedly mounted on the bottom plate (10); one end of the bent tube (51) is fixedly connected to an air supply end of the air pump (50); an exhaust pipe (52) is fixedly mounted on the other end of the bent tube (51); a plurality of air outlet holes are provided on the exhaust pipe (52); and a channel opening (101) is provided on the bottom plate (10).

3. A lithium battery energy storage device according to claim 1, characterized in that: A second piston rod (341) is slidably mounted inside each second heat dissipation blade (34), and a second spring (342) is fixedly mounted between the second piston rod (341) and the second heat dissipation blade (34); A plurality of drain pipes (60) are arranged on the vertical heat conduction plate (31), a drain pipe (60) is arranged above each lithium battery (20), a plurality of spray heads (601) are fixedly mounted on the drain pipes (60), a connecting pipe (602) is fixedly mounted on one end of each drain pipe (60), the drain pipe (60) is connected to the interior of the vertical heat conduction plate (31) via the connecting pipe (602), an electric control valve (63) is fixedly mounted on the connecting pipe (602), and a first smoke sensor (64) is fixedly mounted on the electric control valve (63).

4. A lithium battery energy storage device according to claim 3, characterized in that: The heat-conducting frame is filled with insulating heat-dissipating liquid.

5. A lithium battery energy storage device according to claim 1, characterized in that: A threaded rod (41) is rotatably mounted inside the transverse heat conducting plate (30), one end of the threaded rod (41) passes through the interior of the piston frame (36) and is threadedly connected to the piston frame (36), and a motor (40) is fixedly mounted on the bottom plate (10), an output end of the motor (40) is fixedly connected to one end of the threaded rod (41).

6. A lithium battery energy storage device according to claim 1, characterized in that: A plurality of pressure rods (111) are fixedly mounted on the first mounting plate (11).

7. A lithium battery energy storage device according to claim 1, characterized in that: More than three universal wheels (102) are installed on the lower surface of the base plate (10).

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