Intelligent thermal control explosion-proof safety protection device for lithium battery

Abstract

The invention belongs to the technical field of lithium batteries, in particular to an intelligent thermal control explosion-proof safety protection device for a lithium battery, and provides the following scheme that the intelligent thermal control explosion-proof safety protection device comprises an explosion-proof metal shell, universal wheels are connected to four corners of the outer wall of the bottom of the explosion-proof metal shell through bolts, and a box cover is connected to one side of the top of the explosion-proof metal shell through a hinge; a base plate is connected to the position, close to the top, of the inner wall of the anti-explosion metal shell through bolts, telescopic rods are movably connected between the two sides of the top of the base plate and the two opposite sides of the box cover, a connecting opening is formed in one side of the top of the base plate, a panel is connected to the inner wall of the connecting opening through bolts, and an embedding groove is formed in one side of the top of the panel; and an alternating current input connector is embedded into the inlaying groove. Rainwater is effectively prevented from permeating into the device through the alternating current input connector, the direct current output parallel operation connector or the alternating current output connector, so that a lithium battery and electrical accessories in the device are prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the field of lithium batteries, and particularly to an intelligent thermal control explosion-proof safety protection device for lithium batteries. Background Art

[0002] The battery management system adopts bidirectional DC power conversion technology and has bidirectional step-up and step-down functions. Intelligent lithium batteries can be directly connected in parallel with the existing batteries at the site to meet the smooth capacity expansion requirements of site backup power. During the use of lithium batteries, accidents caused by lithium battery safety problems are also increasing. Among them, fire and explosion accidents of electric bicycles, new energy vehicles and other lithium battery energy storage devices are on the rise. Therefore, the safety of lithium batteries has become a key issue restricting the healthy development of the lithium battery industry. Once an accident such as a lithium battery explosion occurs, it will seriously endanger people's lives and property safety.

[0003] After retrieval, a Chinese patent application with the publication number of CN114678645A discloses an intelligent thermal control explosion-proof safety protection device for lithium batteries, which has an outer protective shell, an inner protective shell, an explosion-proof heat exchange module, a temperature controller, a three-color warning light and a buzzer installed on the top surface of the outer protective shell. A temperature sensor is fixed on the inner side surface of the inner protective shell, a heating resistance wire is wound and installed on the outer side surface of the inner protective shell, and a semiconductor refrigeration sheet connected to the explosion-proof heat exchange module is fixed; a safety detachment module is arranged on the outer side of the outer protective shell, and the safety detachment module has a spring for throwing the lithium battery away from the vehicle in the state of lithium battery explosion; the three-color warning light and the buzzer are connected to the temperature controller through circuits, and the temperature controller receives and processes the signals of the temperature sensor. The present invention can monitor the temperature of the lithium battery in real time and perform intelligent thermal control on the lithium battery to ensure that the lithium battery is at the best working temperature, judge and warn the danger level during the use of the lithium battery, ensure the personal safety of the vehicle and the user, and reduce the harm.

[0004] During the use of lithium batteries, the lithium batteries are usually connected through power lines, and during the connection process, the existing connectors are usually exposed outside. Therefore, when encountering rainy weather or the connectors come into contact with water, the water flow will penetrate into the interior of the lithium batteries through the connectors, thereby damaging the lithium batteries. Summary of the Invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An intelligent thermal control explosion-proof safety protection device for a lithium battery, comprising an explosion-proof metal shell. At the four corners of the outer wall of the bottom of the explosion-proof metal shell, universal wheels are connected by bolts. On one side of the top of the explosion-proof metal shell, a box cover is connected by a hinge. At a position near the top of the inner wall of the explosion-proof metal shell, a substrate is connected by bolts. Between the two sides of the top of the substrate and the opposite sides of the box cover, telescopic rods are movably connected. On one side of the top of the substrate, a connection port is provided, and a panel is connected by bolts to the inner wall of the connection port. On one side of the top of the panel, an inlay groove is provided, and an AC input connector is embedded in the inlay groove. The AC output connector is embedded in the top of the panel. An embedding port is provided between one side of the explosion-proof metal shell and the panel, and a DC output parallel connection joint is embedded in the embedding port. On one side of the top of the panel, an LED display screen is provided. The control switch is inlaid on the top of the panel. A socket is penetrated through the top of the substrate, and a lithium battery is inserted into the socket.

[0007] Preferably, on the outer walls of both sides of the explosion-proof metal shell near the top, pads are connected by bolts. On one side of each of the two pads, a pull ring is rotatably connected. Anti-slip sleeves are sleeved on the outer walls of the two pull rings. On one side of the box cover, a handle is connected by bolts.

[0008] Preferably, on both sides of the top of the substrate, buckle buttons are connected by bolts. On one side of the box cover, two slots adapted to the buckle buttons are provided, and the positions of the slots correspond to the positions of the buckle buttons.

[0009] Preferably, on one side of the box cover, a top limit frame for the lithium battery is connected by bolts. On one side of the inner wall of the bottom of the explosion-proof metal shell, a side limit frame for the lithium battery is connected by bolts. A cooperation is formed between the top limit frame for the lithium battery and the side limit frame for the lithium battery.

[0010] Preferably, on the rear side of the explosion-proof metal shell, a pull rod seat is connected by bolts. On the top of the pull rod seat, a pull rod is connected by bolts. The pull rod is made of telescopic material. On one side of the explosion-proof metal shell, a limit seat is connected by bolts. On both sides of the top of the limit seat, limit ports are penetrated. The two limit ports are slidably connected with the pull rod.

[0011] Preferably, between the bottom of the lithium battery and the inner wall of the bottom of the explosion-proof metal shell, a support mechanism is provided, and both sides of the support mechanism are slidably connected with one side inner wall of the explosion-proof metal shell and one side of the side limit frame for the lithium battery.

[0012] Preferably, the support mechanism includes a support plate, two limit clamping plates and two transmission components, and springs are connected between the two sides of the bottom of the support plate and the inner wall of the top of the explosion-proof metal shell by bolts. A plurality of anti-slip grooves are formed on the top of the support plate and one side of the two limit clamping plates. Sliding grooves are formed on both sides of the top of the support plate. Sliders are slidably connected to both sides of the inner walls of the two sliding grooves. The top of the slider is fixedly connected to the bottom of the limit clamping plate, and the bottom of the slider is connected to the bottom of the explosion-proof metal shell through a transmission component.

[0013] Preferably, the transmission component includes a guide rail, two push rods, a connecting frame, two support blocks, a first rack, a gear and a second rack. The bottom of the connecting frame is connected to the bottom of the explosion-proof metal shell by bolts. One side of the two push rods is rotatably connected to the connecting frame through a bearing. The top of the two push rods is hinged to the two support blocks. The inner wall of the guide rail is slidably connected to the support block. A sliding port is formed through the guide rail and the sliding groove. The first rack is slidably connected to the sliding port. One side of the top of the first rack is fixedly connected to the bottom of the slider by bolts. Rotating shafts are rotatably connected to both opposite sides of the guide rail through bearings. The gear is fixedly sleeved on the outer wall of the rotating shaft. The top of the gear meshes with the first rack. The bottom of the second rack is fixedly connected to the top of the support block. The second rack meshes with the gear.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. Through the embedded design of the AC input connector, the DC output parallel connection connector and the AC output connector, the device of the present invention is applicable to various scenarios, ensuring power supply and transportation safety. At the same time, it can safely use lithium batteries in rainy weather, effectively preventing rainwater from penetrating into the device through the AC input connector, the DC output parallel connection connector or the AC output connector, thereby damaging the lithium batteries and electrical accessories inside the device, and further affecting the operation of the lithium batteries. The settings of the LED display and the control switch can directly configure the energy backup parameters and adjust the output voltage;

[0016] 2. Through the provided support mechanism, when installing the lithium battery, the lithium battery is fixed inside the explosion-proof metal shell. The lithium battery is limited and fixed by the top limit frame and the side limit frame of the lithium battery, thus preventing the lithium battery from moving during transportation or handling, which may affect the operation of the lithium battery. During this period, the bottom of the lithium battery will rest on the support mechanism, and the support plate will slide downward under the gravity of the lithium battery. At this time, the two push rods will drive the support blocks to slide to both sides under the action of pressure, and the support blocks will drive the second rack to move synchronously when moving. When the second rack meshes with the gear during movement, the gear will rotate under the meshing action of the second rack. At this time, the gear drives the first rack to move through the meshing between the gear and the first rack, and the first rack will drive the slider and the limit clamping plate to move towards one side of the lithium battery when moving, so as to fix and limit the lithium battery through the limit clamping plate, in order to improve the stability of the lithium battery installation and prevent the lithium battery from reciprocating during transportation or handling, resulting in friction between the lithium battery and the inner wall of the explosion-proof metal shell due to movement, causing the lithium battery to heat up due to friction, and further leading to explosion or damage of the lithium battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0018] Figure 2 is a schematic partial structural diagram of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0019] Figure 3 is a schematic partial rear view structural diagram of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0020] Figure 4 is a schematic partial top view structural diagram of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0021] Figure 5 is a schematic structural diagram of the support mechanism of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0022] Figure 6 is a schematic structural diagram of the fixing component of an intelligent thermal control explosion-proof safety protection device for lithium batteries proposed by the present invention;

[0023] Figure 7 is Figure 6 a schematic structural diagram of the structure at position A proposed in

[0024] In the attached drawings: 1. Explosion-proof metal shell; 2. Pull ring; 3. Box cover; 4. Top limit bracket for lithium battery; 5. Handle; 6. Telescopic rod; 7. Substrate; 8. Snap fastener; 9. Panel; 10. AC input connector; 11. Universal wheel; 12. Side limit bracket for lithium battery; 13. DC output parallel connection joint; 14. Support mechanism; 15. Limit seat; 16. Pull rod; 17. Lithium battery; 18. LED display screen; 19. Control switch; 20. AC output connector; 21. Support plate; 22. Spring; 23. Chute; 24. Limit clamping plate; 25. Guide rail; 26. Transmission component; 27. Connecting frame; 28. Push rod; 29. Support block; 30. First rack; 31. Slide block; 32. Second rack; 33. Rotating shaft; 34. Gear. Detailed implementation manners

[0025] Example 1, referring to Figures 1 - 4 , an intelligent thermal control explosion-proof safety protection device for lithium batteries, comprising an explosion-proof metal shell 1. Universal wheels 11 are bolted to the four corners of the outer wall of the bottom of the explosion-proof metal shell 1. A box cover 3 is hinged to one side of the top of the explosion-proof metal shell 1. A substrate 7 is bolted to a position near the top of the inner wall of the explosion-proof metal shell 1. Telescopic rods 6 are movably connected between the two sides of the top of the substrate 7 and the opposite sides of the box cover 3. A connection port is formed on one side of the top of the substrate 7, and a panel 9 is bolted to the inner wall of the connection port. An inlay groove is formed on one side of the top of the panel 9, and an AC input connector 10 is embedded in the inside of the inlay groove. An AC output connector 20 is embedded in the top of the panel 9. An embedding opening is formed between one side of the explosion-proof metal shell 1 and the panel 9, and a DC output parallel connection joint 13 is embedded in the inside of the embedding opening. An LED display screen 18 is arranged on one side of the top of the panel 9, and a control switch 19 is inlaid on the top of the panel 9. A socket is formed through the top of the substrate 7, and a lithium battery 17 is inserted into the inside of the socket. Through the embedded design of the AC input connector 10, the DC output parallel connection joint 13 and the AC output connector 20, the device is applicable to various scenarios, ensuring power supply and transportation safety. At the same time, the lithium battery 17 can be safely used in rainy weather, effectively preventing rainwater from penetrating into the inside of the device through the AC input connector 10, the DC output parallel connection joint 13 or the AC output connector 20, thereby damaging the lithium battery 17 and electrical accessories inside the device and further affecting the operation of the lithium battery 17. The settings of the LED display 18 and the control switch 19 can directly configure the energy backup parameters and adjust the output voltage.

[0026] On the basis of the above, pads are bolted to the positions near the top of the outer walls on both sides of the explosion-proof metal shell 1, and pull rings 2 are rotatably connected to one side of each of the two pads. Anti-slip sleeves are sleeved on the outer walls of the two pull rings 2. A handle 5 is bolted to one side of the box cover 3.

[0027] On the basis of the above, buckle 8 is connected to both sides of the top of the substrate 7 by bolts. Two slots adapted to the buckle 8 are provided on one side of the box cover 3. The positions of the slots correspond to the positions of the buckle 8, which are used to fix the box cover 3 and the explosion-proof metal shell 1 to prevent the box cover 3 from opening during movement or handling, causing the lithium battery 17 to fall off.

[0028] On the basis of the above, a lithium battery top limiting frame 4 is connected to one side of the box cover 3 by bolts. One side of the inner wall of the bottom of the explosion-proof metal shell 1 is connected to a lithium battery side limiting frame 12 by bolts. A cooperation is formed between the lithium battery top limiting frame 4 and the lithium battery side limiting frame 12 to limit and fix the lithium battery 17 to prevent the lithium battery 17 from moving during movement or handling.

[0029] On the basis of the above, a pull rod seat is connected to the rear side of the explosion-proof metal shell 1 by bolts, and a pull rod 16 is connected to the top of the pull rod seat by bolts. The pull rod 16 is made of a telescopic material. A limiting seat 15 is connected to one side of the explosion-proof metal shell 1 by bolts. Limiting ports are penetrated through both sides of the top of the limiting seat 15, and the two limiting ports are slidably connected to the pull rod 16, which is convenient for moving the device.

[0030] Example 2, referring to Figures 1 - 7 , a lithium battery intelligent thermal control explosion-proof safety protection device. Compared with Example 1, on the basis of Example 1, a support mechanism 14 is provided between the bottom of the lithium battery 17 and the inner wall of the bottom of the explosion-proof metal shell 1, and both sides of the support mechanism 14 are slidably connected to one side inner wall of the explosion-proof metal shell 1 and one side of the lithium battery side limiting frame 12.

[0031] On the basis of the above, the support mechanism 14 includes a support plate 21, two limiting clamping plates 24 and two transmission components 26. Springs 22 are connected to both sides of the bottom of the support plate 21 and the inner wall of the top of the explosion-proof metal shell 1 by bolts. A plurality of anti-slip grooves are provided on the top of the support plate 21 and one side of the two limiting clamping plates 24. Sliding grooves 23 are provided on both sides of the top of the support plate 21. Sliders 31 are slidably connected to both sides of the inner walls of the two sliding grooves 23. The top of the slider 31 is fixedly connected to the bottom of the limiting clamping plate 24, and the bottom of the slider 31 is connected to the bottom of the explosion-proof metal shell 1 through the transmission component 26.

[0032] On the basis described above, the transmission assembly 26 includes a guide rail 25, two push rods 28, a connecting frame 27, two support blocks 29, a first rack 30, a gear 34 and a second rack 32. The bottom of the connecting frame 27 is bolted to the bottom of the explosion-proof metal housing 1. One side of each of the two push rods 28 is rotatably connected to the connecting frame 27 through a bearing. The tops of the two push rods 28 are hinged to the two support blocks 29. The inner wall of the guide rail 25 is slidably connected to the support blocks 29. A sliding opening is formed through the guide rail 25 and the sliding groove 23. The first rack 30 is slidably connected to the sliding opening. One side of the top of the first rack 30 is bolted to the bottom of the slider 31. Rotating shafts 33 are rotatably connected to opposite sides of the guide rail 25 through bearings. The gear 34 is fixedly sleeved on the outer wall of the rotating shaft 33. The top of the gear 34 meshes with the first rack 30. The bottom of the second rack 32 is fixedly connected to the top of the support block 29. The second rack 32 meshes with the gear 34. When installing the lithium battery 17, the lithium battery 17 is fixed inside the explosion-proof metal housing 1. The lithium battery 17 is limited and fixed by the top limiting frame 4 of the lithium battery and the side limiting frame 12 of the lithium battery, so as to prevent the lithium battery 17 from moving during movement or handling, which may affect the operation of the lithium battery 17. During this period, the bottom of the lithium battery 17 will be supported on the support mechanism 14, and the support plate 21 will slide downward under the action of the gravity of the lithium battery 17. At this time, the two push rods 28 will drive the support blocks 29 to slide to both sides under the action of pressure. When the support blocks 29 move, they will drive the second rack 32 to move synchronously. When the second rack 32 meshes with the gear 34 during movement, the gear 34 will rotate under the meshing action of the second rack 32. At this time, the gear 34 drives the first rack 30 to move through the meshing between the gear 34 and the first rack 30. When the first rack 30 moves, it will drive the slider 31 and the limiting clamping plate 24 to move towards one side of the lithium battery 17, so as to fix and limit the lithium battery 17 through the limiting clamping plate 24, in order to improve the installation stability of the lithium battery 17 and prevent the lithium battery 17 from reciprocating during handling or movement, resulting in friction between the lithium battery 17 and the inner wall of the explosion-proof metal housing 1 due to movement, so that the lithium battery 17 generates heat due to friction, and further causes the lithium battery 17 to explode or be damaged.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An intelligent thermal control explosion-proof safety protection device for a lithium battery, comprising an explosion-proof metal shell (1), characterized in that, Four corners of the outer wall of the bottom of the explosion-proof metal shell (1) are all connected with universal wheels (11) by bolts. One side of the top of the explosion-proof metal shell (1) is connected with a box cover (3) by a hinge. A substrate (7) is connected to the inner wall of the explosion-proof metal shell (1) near the top by bolts. Telescopic rods (6) are movably connected between two sides of the top of the substrate (7) and two opposite sides of the box cover (3). A connection port is formed on one side of the top of the substrate (7), and a panel (9) is connected to the inner wall of the connection port by bolts. An embedding groove is formed on one side of the top of the panel (9), and an AC input connector (10) is embedded in the embedding groove. An AC output connector (20) is embedded in the top of the panel (9). An embedding opening is formed between one side of the explosion-proof metal shell (1) and the panel (9), and a DC output parallel connection connector (13) is embedded in the embedding opening. An LED display screen (18) is arranged on one side of the top of the panel (9). A control switch (19) is embedded in the top of the panel (9). A socket is formed through the top of the substrate (7), and a lithium battery (17) is inserted into the socket.

2. The intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 1, wherein, Pads are connected to the outer walls of two sides of the explosion-proof metal shell (1) near the top by bolts. Pull rings (2) are rotatably connected to one side of each of the two pads. Anti-slip sleeves are sleeved on the outer walls of the two pull rings (2). A handle (5) is connected to one side of the box cover (3) by bolts.

3. An intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 1, characterized in that, Latch buckles (8) are connected to two sides of the top of the substrate (7) by bolts. Two slots adapted to the latch buckles (8) are formed on one side of the box cover (3). The positions of the slots correspond to the positions of the latch buckles (8).

4. An intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 1, characterized in that, A lithium battery top limit frame (4) is connected to one side of the box cover (3) by bolts. A lithium battery side limit frame (12) is connected to one side of the inner wall of the bottom of the explosion-proof metal shell (1) by bolts. A cooperation is formed between the lithium battery top limit frame (4) and the lithium battery side limit frame (12).

5. An intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 1, characterized in that, A pull rod seat is connected to the rear side of the explosion-proof metal shell (1) by bolts. A pull rod (16) is connected to the top of the pull rod seat by bolts. The pull rod (16) is made of telescopic material. A limit seat (15) is connected to one side of the explosion-proof metal shell (1) by bolts. Limit openings are formed through two sides of the top of the limit seat (15), and the two limit openings are slidably connected with the pull rod (16).

6. The intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 4, wherein, A support mechanism (14) is arranged between the bottom of the lithium battery (17) and the inner wall of the bottom of the explosion-proof metal shell (1). Two sides of the support mechanism (14) are slidably connected with one side of the inner wall of the explosion-proof metal shell (1) and one side of the lithium battery side limit frame (12).

7. An intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 6, characterized in that, The support mechanism (14) includes a support plate (21), two limit clamping plates (24) and two transmission components (26). Springs (22) are bolted between the two sides of the bottom of the support plate (21) and the top inner wall of the explosion-proof metal shell (1). A plurality of anti-slip grooves are formed on the top of the support plate (21) and on one side of the two limit clamping plates (24). Sliding grooves (23) are formed on both sides of the top of the support plate (21). Sliders (31) are slidably connected to both sides of the inner walls of the two sliding grooves (23). The top of the slider (31) is fixedly connected to the bottom of the limit clamping plate (24). The bottom of the slider (31) is connected to the bottom of the explosion-proof metal shell (1) through a transmission component (26).

8. An intelligent thermal control explosion-proof safety protection device for a lithium battery according to claim 7, characterized in that, The transmission component (26) includes a guide rail (25), two push rods (28), a connecting frame (27), two support blocks (29), a first rack (30), a gear (34) and a second rack (32). The bottom of the connecting frame (27) is bolted to the bottom of the explosion-proof metal shell (1). One side of the two push rods (28) is rotatably connected to the connecting frame (27) through a bearing. The tops of the two push rods (28) are hinged to the two support blocks (29). The inner wall of the guide rail (25) is slidably connected to the support block (29). A sliding port is formed through the guide rail (25) and the sliding groove (23). The first rack (30) is slidably connected to the sliding port. One side of the top of the first rack (30) is bolted to the bottom of the slider (31). Rotating shafts (33) are rotatably connected to both opposite sides of the guide rail (25) through bearings. The gear (34) is fixedly sleeved on the outer wall of the rotating shaft (33). The top of the gear (34) meshes with the first rack (30). The bottom of the second rack (32) is fixedly connected to the top of the support block (29). The second rack (32) meshes with the gear (34).

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