Emergency protection device of BMS module lithium battery equipment

Abstract

The invention discloses an emergency protection device for BMS module lithium battery equipment, and relates to the technical field of lithium battery equipment, the emergency protection device comprises a shell, the top end and the bottom end of the shell are detachably provided with a top cover and a bottom plate through screws respectively, rectangular grooves are symmetrically formed in the outer surfaces of the two opposite sides of the shell in a penetrating mode, and sliding blocks are slidably installed on the inner walls of the two rectangular grooves; sealing plates used for shielding the rectangular grooves are fixedly mounted on the outer surfaces of the sliding blocks, and a turning plate is rotationally mounted between the two sliding blocks through a rotating shaft; the upper surface of the turning plate is used for mounting a main battery pack; the lower surface of the turning plate is used for mounting an auxiliary battery pack; a turnover mechanism is installed between the sliding block and the shell, and a monitoring mechanism is installed on the top cover. The temperature of the main battery pack during working is monitored through the monitoring mechanism, when the temperature of the main battery pack during working sharply rises to an ignition point, the monitoring mechanism unlocks the sliding block through the limiting mechanism, the turnover mechanism drives the turnover plate to turn over by 180 degrees, the elastic conductive column of the main battery pack reaching the ignition point is disconnected from the conductive contact, and the main battery pack is prevented from being ignited. Meanwhile, the turnover plate, the baffle and the bottom of the shell form a closed space to isolate oxygen and avoid ignition and spontaneous combustion of the main battery pack.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery equipment, and in particular to an emergency protection device for BMS module lithium battery equipment. Background Art

[0002] BMS (Battery Management System) module pluggable lithium battery devices are usually used in systems that require efficient battery management, especially in application scenarios with removable battery designs. The BMS module itself is responsible for monitoring the battery status and managing parameters such as charging, discharging, temperature, and single cell voltage to ensure safe, long-lasting, and efficient battery operation.

[0003] Existing BMS modules with pluggable lithium battery devices may enter a thermal runaway state when overcharged, over-discharged, or subjected to external physical damage. At this time, the chemical reaction inside the battery will release a large amount of heat. When the temperature of the lithium battery device rises sharply to the ignition point, it will cause spontaneous combustion and cause the fire to spread rapidly. Summary of the invention

[0004] In order to make the use of BMS safer, the present application provides an emergency protection device for BMS module lithium battery equipment.

[0005] The present application provides an emergency protection device for BMS module lithium battery equipment, which adopts the following technical solution: An emergency protection device for BMS module lithium battery equipment comprises a shell, the top and bottom ends of the shell are detachably connected with a top cover and a bottom plate respectively, rectangular grooves are symmetrically penetrated on two opposite side surfaces of the shell, sliders are slidably connected to the inner walls of the two rectangular grooves, a flap is rotatably installed between the two sliders via a rotating shaft, the upper surface of the flap is used to install a main battery pack, and the lower surface of the flap is used to install a secondary battery pack; elastic conductive columns are installed on the sides of the main battery pack and the secondary battery pack, mounting grooves are opened on the outer surfaces of the opposite sides of the flap, baffles are slidably installed on the inner walls of the mounting grooves, a wedge block is fixedly installed on the inner wall of one side of the shell, a conductive contact matching the elastic conductive column is fixedly installed on the outer surface of the wedge block away from the shell, a flip mechanism for driving the rotating shaft to rotate is provided between the slider and the shell, and a monitoring mechanism is installed on the top cover.

[0006] Optionally, the flipping mechanism includes a worm gear fixedly mounted on the end of the rotating shaft, a worm is rotatably mounted on the outer surface of the slider, the worm is meshed with the worm gear, a force storage spring rod is fixedly mounted on the upper surface of the base plate, the telescopic end of the force storage spring rod is fixedly mounted on the lower surface of the slider, a transmission assembly is installed between the worm and the outer shell, and a limiting mechanism is installed on the outer surface of the outer shell close to the slider.

[0007] Optionally, the transmission assembly includes a transmission gear fixedly mounted on one end of the worm, and a transmission rack meshing with the transmission gear is fixedly mounted on the outer surface of the housing close to the rectangular groove.

[0008] Optionally, the limiting mechanism includes a fixed block fixedly mounted on the outer surface of the shell, a guide rod is slidably installed transversely on the outer surface of the fixed block, a trapezoidal block is fixedly installed on one end of the guide rod close to the slider, the lower surface of the trapezoidal block abuts against the upper surface of the slider, a compression spring is sleeved on the outer surface of the guide rod, the compression spring is arranged between the trapezoidal block and the fixed block, a pull rod is fixedly installed on one end of the guide rod away from the trapezoidal block, and a limiting ring is fixedly installed on one end of the pull rod away from the guide rod.

[0009] Optionally, the monitoring mechanism includes a fixed cylinder fixedly mounted on the upper surface of the top cover, one end of the fixed cylinder is a closed structure, and a heat-conducting block connected to the interior of the fixed cylinder is fixedly mounted on the lower surface of the fixed cylinder near the closed end, the heat-conducting block passes through the top cover, and a monitoring component is installed on the top of the top cover.

[0010] Optionally, the monitoring assembly includes a vertical plate fixedly mounted on the upper surface of the top cover, a moving rod is inserted transversely through the outer surface of the vertical plate, a piston is fixedly mounted on one end of the moving rod close to the fixed cylinder, the piston is slidably mounted on the inner wall of the fixed cylinder, mercury is filled between the interior of the fixed cylinder and the piston, a return spring is sleeved on the outer surface of the moving rod, the return spring is arranged between the vertical plate and the piston, and a toggle assembly is installed between the moving rod and the pull rod.

[0011] Optionally, the toggle assembly includes a door frame fixedly mounted on an end of the moving rod away from the piston, and both ends of the door frame are provided with a slot, and the pull rod is clamped in the slot.

[0012] Optionally, a plurality of thrust spring rods are evenly and fixedly installed between the baffle and the inner wall of the mounting groove.

[0013] Optionally, a plurality of gas cylinders are fixedly mounted on the outer surface of the shell, a connecting pipe connected to the interior of the bottom side of the shell is fixedly mounted on the gas outlet end of the gas cylinder, and a solenoid valve is installed on the connecting pipe.

[0014] Optionally, a cover shell is fixedly mounted on the outer surface of the shell, and the flip mechanism is installed inside the cover shell.

[0015] In summary, this application includes the following beneficial technical effects: The temperature of the main battery pack during operation is monitored by the monitoring mechanism. When the temperature of the main battery pack during operation rises sharply to the ignition point, the monitoring mechanism will unlock the slider through the limiting mechanism, so that the flip mechanism drives the flip plate to flip 180 degrees, disconnecting the elastic conductive column and the conductive contact of the main battery pack that has reached the ignition point, and at the same time forming an enclosed space among the flip plate, baffle and the bottom of the outer shell to isolate oxygen and prevent the main battery pack from catching fire and self-igniting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front structural schematic diagram of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 2 This is a rear structural schematic diagram of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 4 This is a schematic diagram of the split structure of the fixed cylinder and piston of a pluggable lithium battery device for a BMS module proposed by the present invention; Figure 5 A schematic diagram of the internal structure of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 6 A schematic diagram of a flip plate structure of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 7 This is a schematic diagram of a cross-sectional structure of a flip plate of a lithium battery device with a pluggable BMS module proposed by the present invention; Figure 8 A schematic diagram of the structure of a slider of a lithium battery device with a pluggable BMS module proposed by the present invention; Fig. 9 for Figure 5 A magnified view of the structure in the middle.

[0017] Description of reference numerals: 1. Shell; 2. Top cover; 3. Bottom plate; 4. Wedge block; 5. Conductive contact; 6. Rectangular groove; 7. Slider; 8. Flip plate; 9. Main battery pack; 10. Auxiliary battery pack; 11. Mounting groove; 12. Thrust spring rod; 13. Baffle; 14. Storage spring rod; 15. Sealing plate; 16. Worm gear; 17. Worm; 18. Transmission gear; 19. Transmission rack; 20. Fixed block; 21. Guide rod; 22. Trapezoidal block; 23. Compression spring; 24. Pull rod; 25. Limiting ring; 26. Fixed cylinder; 27. Heat-conducting block; 28. Moving rod; 29. ​​Piston; 30. Door frame; 31. Reset spring; 32. Vertical plate; 33. Slot; 34. Gas cylinder; 35. Connecting pipe; 36. Cover. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-9 This application is described in further detail.

[0019] The present application discloses an emergency protection device for BMS module lithium battery equipment, the device comprises a shell 1, a BMS module plug interface is installed on the outer side of the shell 1, and the BMS module is plugged into the BMS module plug interface; a top cover 2 and a bottom plate 3 are detachably installed on the top and bottom ends of the shell 1 by screws respectively, a heat dissipation hole is penetrated through the upper surface of the top cover 2, and a dustproof net is installed at the heat dissipation hole; rectangular grooves 6 are symmetrically penetrated through the outer surfaces of the opposite sides of the shell 1, and sliders 7 are slidably installed on the inner walls of the two rectangular grooves 6, and a sealing plate 15 for shielding the rectangular grooves 6 is fixedly installed on the outer surface of the slider 7, a flap 8 is rotatably installed between the two sliders 7 through a rotating shaft, and the rotating shaft is fixedly installed between the flap 8, and a main battery is fixedly installed on the upper surface of the flap 8 Group 9, a secondary battery pack 10 is fixedly installed on the lower surface of the flap 8, and elastic conductive columns are installed on the sides of the main battery pack 9 and the secondary battery pack 10. The outer surfaces of the two opposite sides of the flap 8 are provided with installation grooves 11, and the inner walls of the installation grooves 11 are slidably installed with baffles 13. A plurality of thrust spring rods 12 are evenly fixedly installed between the baffles 13 and the inner walls of the installation grooves 11. A wedge block 4 is fixedly installed on the inner wall of one side of the outer shell 1, and a conductive contact 5 matching the elastic conductive column is fixedly installed on the outer surface of the wedge block 4 away from the outer surface of the outer shell 1. The conductive contact 5 is connected to the power interface installed on the outside of the outer shell 1, so that the external device can be powered by the power interface; a flip mechanism is installed between the slider 7 and the outer shell 1, and a monitoring mechanism is installed on the top cover 2.

[0020] In this embodiment, the flipping mechanism includes a worm gear 16 fixedly mounted on the end of the rotating shaft away from the flap 8, a worm 17 is rotatably mounted on the outer surface of the slider 7, the worm 17 is meshed with the worm gear 16, a force storage spring rod 14 is fixedly mounted on the upper surface of the bottom plate 3, the telescopic end of the force storage spring rod 14 is fixedly mounted on the lower surface of the slider 7, a transmission assembly is installed between the worm 17 and the housing 1, a limiting mechanism is installed on the outer surface of the housing 1 near the slider 7, the transmission assembly includes a transmission gear 18 fixedly mounted on one end of the worm 17, a transmission rack 19 matching the transmission gear 18 is fixedly mounted on the outer surface of the housing 1 near the rectangular groove 6, and the limiting mechanism includes a fixed block fixedly mounted on the outer surface of the housing 1 20, a guide rod 21 is slidably installed transversely on the outer surface of the fixed block 20, a trapezoidal block 22 is fixedly installed on the end of the guide rod 21 close to the slider 7, the lower surface of the trapezoidal block 22 is against the upper surface of the slider 7, a compression spring 23 is sleeved on the outer surface of the guide rod 21, the compression spring 23 is arranged between the trapezoidal block 22 and the fixed block 20, a pull rod 24 is fixedly installed on the end of the guide rod 21 away from the trapezoidal block 22, a limit ring 25 is fixedly installed on the end of the pull rod 24 away from the guide rod 21, the toggle assembly includes a door frame 30 fixedly installed on the end of the moving rod 28 away from the piston 29, both end ends of the door frame 30 are provided with a card slot 33, and the pull rod 24 is clamped in the inside of the card slot 33.

[0021] During use, when the temperature of the main battery pack 9 rises sharply to the ignition point during operation, the mercury in the fixed cylinder 26 expands rapidly, causing the piston 29 to push the door frame 30 to move through the moving rod 28. Since the slots 33 at both ends of the door frame 30 are engaged with the pull rod 24, when the end of the door frame 30 moves to the limit ring 25, the door frame 30 will push the guide rod 21 through the limit ring 25 and the pull rod 24, so that the trapezoidal block 22 installed at the end of the guide rod 21 is moved away from above the slider 7, and the slider 7 is no longer limited. At this time, the force storage spring rod 14 will release the elastic force, so that the telescopic end of the force storage spring rod 14 pushes the slider 7 to move upward, so that the slider 7 can drive the flap 8, the main battery pack 9 and the auxiliary battery pack 10 to move upward as a whole through the rotating shaft. At the same time, the transmission gear 1 installed at the end of the worm 17 8 will roll on the transmission rack 19, so that the transmission gear 18 drives the worm 17 to rotate, so that the worm 17 can drive the worm wheel 16 meshing with it to rotate, so that the worm wheel 16 drives the flap 8 to rotate through the rotating shaft, so that the flap 8 flips 180 degrees, and the elastic conductive column of the main battery pack 9 that has reached the ignition point is disconnected from the conductive contact 5, and at the same time, the flap 8, the baffle 13 and the bottom of the shell 1 form a closed space to isolate oxygen and prevent the main battery pack 9 from catching fire and self-igniting; at the same time, when the elastic conductive column of the main battery pack 9 is disconnected from the conductive contact 5, the external controller will open the solenoid valve installed on the connecting pipe 35, so that the high-pressure carbon dioxide gas filled in the gas cylinder 34 is sprayed into the shell 1, and the main battery pack 9 flipped to the bottom of the shell 1 is extinguished and cooled, so as to further prevent the main battery pack 9 from catching fire and self-igniting.

[0022] In this embodiment, the monitoring mechanism includes a fixed cylinder 26 fixedly mounted on the upper surface of the top cover 2, one end of the fixed cylinder 26 is a closed structure, and a heat-conducting block 27 connected to the interior of the fixed cylinder 26 is fixedly mounted on the lower surface of the fixed cylinder 26 near its closed end, and the heat-conducting block 27 is arranged to penetrate the lower surface of the top cover 2, and a monitoring component is installed on the top of the top cover 2, and the monitoring component includes a vertical plate 32 fixedly mounted on the upper surface of the top cover 2, and a moving rod 28 is inserted and inserted transversely through the outer surface of the vertical plate 32, and a piston 29 is fixedly mounted on the end of the moving rod 28 near one end of the fixed cylinder 26, and the piston 29 is slidably installed with the inner wall of the fixed cylinder 26, and mercury is filled between the interior of the fixed cylinder 26 and the piston 29, and a return spring 31 is sleeved on the outer surface of the moving rod 28, and the return spring 31 is arranged between the vertical plate 32 and the piston 29. When the temperature drops and the mercury shrinks, the return spring 31 can push the piston 29 to retract into the fixed cylinder 26; a toggle assembly is installed between the moving rod 28 and the pull rod 24.

[0023] In this embodiment, a plurality of gas cylinders 34 are fixedly mounted on the outer surface of the housing 1 , a connecting pipe 35 communicating with the interior of the bottom side of the housing 1 is fixedly mounted on the gas outlet end of the gas cylinder 34 , and a solenoid valve is mounted on the connecting pipe 35 .

[0024] When the elastic conductive column of the main battery pack 9 is disconnected from the conductive contact 5, the external controller will open the solenoid valve installed on the connecting pipe 35, so that the high-pressure carbon dioxide gas filled in the gas cylinder 34 will be sprayed into the outer shell 1, and the main battery pack 9 flipped to the bottom of the outer shell 1 will be extinguished and cooled, so as to further prevent the main battery pack 9 from catching fire and self-igniting.

[0025] In this embodiment, a cover shell 36 is fixedly mounted on the outer surface of the housing 1 , and the flip mechanism is mounted inside the cover shell 36 . The cover shell 36 can protect the components of the flip mechanism.

[0026] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the working temperature of the main battery pack 9 is conducted to the mercury filled in the fixed cylinder 26 through the heat conductive block 27, so that the mercury expands due to heat and can push the piston 29 to move outward. When the working temperature of the main battery pack 9 rises sharply to the ignition point, the mercury expands rapidly, so that the piston 29 pushes the door frame 30 to move through the moving rod 28. Since the card grooves 33 at both ends of the door frame 30 are engaged with the pull rod 24, when the end of the door frame 30 moves to the limit ring 25, the door frame 30 will push the guide rod 21 through the limit ring 25 and the pull rod 24, so that the trapezoidal block 22 installed at the end of the guide rod 21 is moved away from above the slider 7, and the slider 7 is no longer limited. At this time, the force storage spring rod 14 will release the elastic force, so that the telescopic end of the force storage spring rod 14 pushes the slider 7 to move upward, so that the slider 7 can drive the flip through the rotating shaft. The plate 8, the main battery pack 9 and the auxiliary battery pack 10 move upward as a whole. At the same time, the transmission gear 18 installed at the end of the worm 17 will roll on the transmission rack 19, so that the transmission gear 18 drives the worm 17 to rotate, so that the worm 17 can drive the worm wheel 16 meshing with it to rotate, so that the worm wheel 16 drives the flap 8 to rotate through the rotating shaft, so that the flap 8 flips 180 degrees, and the elastic conductive column of the main battery pack 9 that has reached the ignition point is disconnected from the conductive contact 5, and at the same time, the flap 8, the baffle 13 and the bottom of the shell 1 form a closed space to isolate oxygen and prevent the main battery pack 9 from catching fire and self-igniting; at the same time, when the elastic conductive column of the main battery pack 9 is disconnected from the conductive contact 5, the external controller will open the solenoid valve installed on the connecting pipe 35, so that the high-pressure carbon dioxide gas filled in the gas cylinder 34 is sprayed into the shell 1, and the main battery pack 9 flipped to the bottom of the shell 1 is extinguished and cooled, and the main battery pack 9 is further prevented from catching fire and self-igniting; When the secondary battery pack 10 is turned over to the top of the housing 1, the elastic conductive column of the secondary battery pack 10 contacts the conductive contact 5. At this time, the maintenance personnel can reconnect the power supply between the secondary battery pack 10 and the external device, so that the external device can continue to operate normally, providing maintenance personnel with more time to deal with the faulty main battery pack 9, repair system problems or perform equipment maintenance, reducing downtime and preventing other potential problems; When the flap 8 flips over, the baffle 13 which is telescopically installed by means of a plurality of thrust spring rods 12 can automatically adjust the extension length according to the space inside the shell 1 so that the flap 8 can flip over normally; after the flap 8 flips into place, the baffle 13 will press against the inner wall of the shell 1 under the thrust of the thrust spring rods 12, so as to achieve the upper and lower partition effect inside the shell 1; when the baffle 13 close to the side of the wedge block 4 flips to the wedge block 4, the side edge of the baffle 13 will press against the inclined surface of the wedge block 4, so as to guide and push the baffle 13 so that the baffle 13 can pass over the wedge block 4.

[0027] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An emergency protection device for a BMS module lithium battery device, comprising a housing, the top and bottom ends of the housing being detachably connected to a top cover and a bottom plate, respectively, characterized in that: Rectangular grooves are symmetrically penetrated on two opposite side surfaces of the shell, and sliders are slidably connected to the inner walls of the two rectangular grooves. A flap is rotatably installed between the two sliders through a rotating shaft, and the upper surface of the flap is used to install the main battery pack, and the lower surface of the flap is used to install the auxiliary battery pack; elastic conductive columns are installed on the sides of the main battery pack and the auxiliary battery pack, and mounting grooves are opened on the outer surfaces of the opposite sides of the flap, and baffles are slidably installed on the inner walls of the mounting grooves, a wedge block is fixedly installed on the inner wall of one side of the shell, and a conductive contact matching the elastic conductive column is fixedly installed on the outer surface of the wedge block away from the shell, a flip mechanism for driving the rotating shaft to rotate is provided between the slider and the shell, and a monitoring mechanism is installed on the top cover.

2. The emergency protection device for BMS module lithium battery equipment according to claim 1, characterized in that: The flipping mechanism includes a worm gear fixedly mounted on the end of the rotating shaft, a worm is rotatably mounted on the outer surface of the slider, the worm is meshed with the worm gear, a force storage spring rod is fixedly mounted on the upper surface of the base plate, the telescopic end of the force storage spring rod is fixedly mounted on the lower surface of the slider, a transmission assembly is installed between the worm and the outer shell, and a limiting mechanism is installed on the outer surface of the outer shell close to the slider.

3. The emergency protection device for BMS module lithium battery equipment according to claim 2 is characterized in that: The transmission assembly comprises a transmission gear fixedly mounted on one end of the worm, and a transmission rack meshing with the transmission gear is fixedly mounted on the outer surface of the housing close to the rectangular groove.

4. The emergency protection device for BMS module lithium battery equipment according to claim 2, characterized in that: The limiting mechanism includes a fixed block fixedly installed on the outer surface of the shell, a guide rod is slidably installed transversely on the outer surface of the fixed block, a trapezoidal block is fixedly installed on one end of the guide rod close to the slider, the lower surface of the trapezoidal block is abutted against the upper surface of the slider, a compression spring is sleeved on the outer surface of the guide rod, the compression spring is arranged between the trapezoidal block and the fixed block, a pull rod is fixedly installed on one end of the guide rod away from the trapezoidal block, and a limiting ring is fixedly installed on one end of the pull rod away from the guide rod.

5. The emergency protection device for BMS module lithium battery equipment according to claim 1, characterized in that: The monitoring mechanism includes a fixed cylinder fixedly installed on the upper surface of the top cover, one end of the fixed cylinder is a closed structure, and a heat-conducting block connected to the interior of the fixed cylinder is fixedly installed on the lower surface of the fixed cylinder near its closed end, the heat-conducting block passes through the top cover, and a monitoring component is installed on the top of the top cover.

6. The emergency protection device for BMS module lithium battery equipment according to claim 5, characterized in that: The monitoring component includes a vertical plate fixedly installed on the upper surface of the top cover, a moving rod is inserted horizontally through the outer surface of the vertical plate, a piston is fixedly installed on one end of the moving rod close to the fixed cylinder, the piston is slidably installed on the inner wall of the fixed cylinder, mercury is filled between the interior of the fixed cylinder and the piston, a return spring is sleeved on the outer surface of the moving rod, the return spring is arranged between the vertical plate and the piston, and a toggle assembly is installed between the moving rod and the pull rod.

7. The emergency protection device for BMS module lithium battery equipment according to claim 6, characterized in that: The toggle assembly comprises a door frame fixedly mounted on an end of a moving rod away from an end of a piston, and both ends of the door frame are provided with a card slot, and the pull rod is card-connected inside the card slot.

8. The emergency protection device for BMS module lithium battery equipment according to claim 1, characterized in that: A plurality of thrust spring rods are evenly and fixedly installed between the baffle plate and the inner wall of the installation groove.

9. The emergency protection device for BMS module lithium battery equipment according to claim 1, characterized in that: A plurality of gas cylinders are fixedly mounted on the outer surface of the shell, a connecting pipe connected with the inside of the bottom side of the shell is fixedly mounted on the gas outlet end of the gas cylinder, and a solenoid valve is mounted on the connecting pipe.

10. The emergency protection device for BMS module lithium battery equipment according to claim 1, characterized in that: A cover shell is fixedly mounted on the outer surface of the shell, and the flip mechanism is mounted inside the cover shell.

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