A lithium battery safety explosion-proof device

Abstract

The present invention belongs to the technical field of battery explosion-proof, and relates to a lithium battery safety explosion-proof device, including an outer box body, a top cover, an inner frame, a partition, a battery, a connecting structure and a pushing mechanism, wherein the top of the outer box body is connected to the top cover, the inner frame is connected to the outer box body, a plurality of partitions are evenly spaced and connected to the inner frame, the partition divides the space in the inner frame into a plurality of storage chambers, each storage chamber is provided with a battery, a connecting structure is provided on the battery, and a pushing mechanism is provided on the battery. In the process of using the battery, after the gas inside the battery expands and causes the battery to expand, the present invention can squeeze the airbag, thereby injecting gas into the connecting box, thereby squeezing the piston plate, and driving the rotating disk to rotate through the internal threaded sleeve and the external threaded rod, so that the vent hole and the connecting hole are connected, and the gas inside the battery can be discharged, thereby avoiding the battery from expanding and exploding.

Description

Technical Field

[0001] The invention belongs to the technical field of battery explosion prevention and relates to a lithium battery safety explosion prevention device. Background Art

[0002] Lithium battery electric vehicles refer to electric vehicles equipped with lithium-ion batteries. In recent years, the environmental problems caused by traditional internal combustion engine vehicles and the shortage of oil resources have made people turn their attention to new energy vehicles. Among them, pure electric vehicles have become an important development direction for electric vehicles because they can truly achieve "zero emissions". Lithium-ion batteries have become the ideal power source for the new generation of electric vehicles due to their excellent performance.

[0003] At present, the lithium batteries used in electric vehicles fix multiple battery cells together by setting up brackets, and then place them together in the battery shell. Each battery is an independent battery pack. Each battery inside the battery pack is kept a certain distance from the battery shell by the bracket to facilitate heat dissipation. However, when the battery heats up after use, the heat inside the battery shell is not easy to dissipate. If this continues for a long time, the gas inside the battery will cause expansion. If the expanded gas inside the battery is not handled, it will easily cause the battery to explode, posing a certain safety hazard. Summary of the invention

[0004] In view of this, the present invention provides a lithium battery safety explosion-proof device.

[0005] The technical solution is: a lithium battery safety explosion-proof device, including an outer box body, a top cover, an inner frame, a partition, a battery, a connecting structure, a pushing mechanism and an extrusion mechanism, the top of the outer box body is connected to the top cover, the inner frame is connected to the outer box body, a plurality of partitions are evenly spaced and connected to the inner frame, the partitions divide the space in the inner frame into a plurality of storage chambers, a battery is placed in each storage chamber, a connecting structure for connecting the inside of the battery with the outside is provided on the battery, a pushing mechanism is provided on the battery, and an extrusion mechanism for opening the connecting structure is provided between the pushing mechanism and the connecting structure.

[0006] Furthermore, the connecting structure includes a rotating disk and an air leakage disk. The top of the battery is connected to the air leakage disk, and four air leakage holes are evenly spaced on the air leakage disk. The air leakage holes connect the inside of the battery with the outside. The air leakage disk is rotatably connected to the rotating disk, and the rotating disk is evenly spaced on the connecting holes.

[0007] Furthermore, the pushing mechanism includes a connecting box, a connecting pipe, a piston plate, an elastic member and an airbag, a connecting box is connected to the middle of the top of the battery, the connecting box cover is on the outside of the rotating disk, a piston plate is slidably connected inside the connecting box, an elastic member is connected between the piston plate and the connecting cover, an airbag is provided in each storage chamber of the inner frame, the airbag covers the battery, and a connecting pipe is connected between the airbag and the upper part of the connecting box.

[0008] Furthermore, the extrusion mechanism includes an externally threaded rod and an internally threaded sleeve, the internally threaded sleeve is connected to the middle of the top of the rotating disk, the externally threaded rod is connected to the middle of the bottom of the piston plate, and the externally threaded rod is threadedly matched with the internally threaded sleeve.

[0009] Furthermore, a heat dissipation mechanism is also included, which includes an outer shell, a fan and an air outlet pipe. The outer shell is installed on the outer box, a plurality of fans are evenly installed on the upper part of the outer shell, and a plurality of air outlet pipes are evenly spaced and connected to the bottom of the outer shell.

[0010] Furthermore, a plurality of ventilation holes are evenly spaced apart on the top cover and the outer box body, heat dissipation channels are evenly spaced apart on the inner frame and the partition, the upper and lower sides of the heat dissipation channels are respectively connected to the ventilation holes on the top cover and the outer box body, and the air outlet pipe is connected to the ventilation holes on the outer box body.

[0011] Furthermore, a cooling mechanism is also included, which includes a liquid storage frame, a liquid outlet pipe, heat dissipation fins, a water pump and a reflux pipe. The liquid storage frame is connected to the outer box body, a cooling chamber is opened at the inner bottom of the outer box body, heat dissipation fins are arranged in the liquid storage frame, a reflux pipe is connected between the liquid storage frame and the cooling chamber, a water pump is installed in the liquid storage frame, and a liquid outlet pipe is connected between the liquid outlet end of the water pump and the cooling chamber.

[0012] Furthermore, a filter screen is also included. The filter screens are evenly installed on the outer shell and are close to the air inlet end of the fan.

[0013] Compared with the prior art, the present invention has the following advantages: 1. During the use of the battery, after the gas inside the battery expands and causes the battery to expand, the present invention can squeeze the airbag, thereby injecting gas into the connecting box, thereby squeezing the piston plate, and driving the rotating disk to rotate through the internal threaded sleeve and the external threaded rod, so that the vent hole and the connecting hole are connected, and the gas inside the battery can be discharged to avoid the battery expansion and explosion.

[0014] 2. During use, the present invention can inject gas into the vents and heat dissipation channels through the operation of the fan to cool down and dissipate heat inside the device. At the same time, the cooling mechanism can cool the inside of the device and the injected gas, further assisting in the cooling process to avoid the battery from expanding due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is an exploded view of the present invention.

[0017] Figure 3 It is a cross-sectional view of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the pushing mechanism of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the connecting structure, the pushing mechanism and the extruding mechanism of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the extrusion mechanism of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the heat dissipation mechanism of the present invention.

[0022] Figure 8 It is a structural schematic diagram of the cooling mechanism of the present invention.

[0023] Fig. 9 It is a cross-sectional view of the cooling mechanism of the present invention.

[0024] Fig.10 It is a cross-sectional view of the cooling mechanism and the outer box body of the present invention.

[0025] Fig.11 It is a schematic diagram of the structure of the outer shell and the filter screen of the present invention.

[0026] The meanings of the reference numerals in the figure are: 1. outer box body, 2. top cover, 4. inner frame, 41. partition, 5. battery, 61. rotating disk, 62. vent disk, 63. internal threaded sleeve, 631. external threaded rod, 71. connecting box, 72. connecting pipe, 73. piston plate, 74. elastic member 1, 75. air bag, 81. outer box body, 82. fan, 83. air outlet pipe, 831. vent, 832. heat dissipation channel, 91. liquid storage frame, 92. reflux pipe, 93. heat dissipation fins, 94. water pump, 95. liquid outlet pipe, 11. filter. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] A lithium battery safety explosion-proof device, such as Figure 1-Figure 6 As shown, it includes an outer box body 1, a top cover 2, an inner frame 4, a partition 41, a battery 5, a connecting structure, a pushing mechanism and an extruding mechanism. The top of the outer box body 1 is connected to the top cover 2, the inner frame 4 is connected to the outer box body 1, and a plurality of partitions 41 are evenly spaced and connected to the inner frame 4. The partitions 41 divide the space in the inner frame 4 into a plurality of storage chambers, and a battery 5 is placed in each storage chamber. The battery 5 is provided with a connecting structure for connecting the inside of the battery 5 with the outside, the battery 5 is provided with a pushing mechanism, and an extruding mechanism for opening the connecting structure is provided between the pushing mechanism and the connecting structure.

[0029] like Figure 5 As shown, the connecting structure includes a rotating disk 61 and an air leakage disk 62. The top of the battery 5 is connected to the air leakage disk 62. The air leakage disk 62 is evenly spaced with four air leakage holes. The air leakage holes connect the inside of the battery 5 with the outside. The air leakage disk 62 is rotatably connected to the rotating disk 61. The rotating disk 61 is evenly spaced with connecting holes. The rotating disk 61 can block the air leakage holes. When the rotating disk 61 rotates, the connecting holes on it can be connected with the air leakage holes, so that the gas in the battery 5 can be discharged.

[0030] like Figure 3-Figure 6 As shown, the pushing mechanism includes a connecting box 71, a connecting pipe 72, a piston plate 73, an elastic member 74 and an airbag 75. The connecting box 71 is connected to the middle of the top of the battery 5, and the connecting box 71 covers the outside of the rotating disk 61. The piston plate 73 is slidably connected in the connecting box 71, and an elastic member 74 is connected between the piston plate 73 and the connecting cover. The elastic member 74 is a connecting spring. An airbag 75 is arranged in each storage chamber of the inner frame 4, and the airbag 75 covers the battery 5 so that the airbag 75 will be squeezed when the battery 5 expands. A connecting pipe 72 is connected between the airbag 75 and the upper part of the connecting box 71, so that after the airbag 75 is squeezed, the gas can be injected into the connecting box 71 through the connecting pipe 72, thereby squeezing the piston plate 73 to move downward.

[0031] like Figure 5 and Figure 6 As shown, the extrusion mechanism includes an externally threaded rod 631 and an internally threaded sleeve 63. The internally threaded sleeve 63 is connected to the middle of the top of the rotating disk 61, and the externally threaded rod 631 is connected to the middle of the bottom of the piston plate 73. The externally threaded rod 631 is threadedly matched with the internally threaded sleeve 63 so that the externally threaded rod 631 can squeeze the internally threaded sleeve 63 to rotate when it moves downward.

[0032] When using the lithium battery 5, the explosion-proof device of the lithium battery 5 can be used. When in use, the rotating disk 61 blocks the bleed hole of the bleed disk 62 in the initial state. During use, if the gas inside the battery 5 expands, the surface of the battery 5 will expand. After the surface of the battery 5 expands, it will squeeze the airbag 75, and the gas in the airbag 75 will be squeezed into the connecting box 71 through the connecting pipe 72, thereby squeezing the piston plate 73 to move downward. When the piston plate 73 moves downward, it will drive the external threaded rod 631 to move downward. When the external threaded rod 631 moves downward, it squeezes the internal threaded sleeve 63 to rotate. The rotation of the internal threaded sleeve 63 can drive the rotating disk 61 to rotate, so that the connecting hole on the rotating disk 61 is connected to the bleed hole on the bleed disk 62. At this time, the gas in the battery 5 will be discharged through the connecting hole and the bleed hole, thereby achieving the effect of pressure relief and explosion prevention, and avoiding the expansion and explosion of the internal structure of the lithium battery 5.

[0033] like Figure 7 As shown, a heat dissipation mechanism is also included, which includes an outer shell 81, a fan 82 and an air outlet pipe 83. The outer shell 81 is installed on the lower left side of the outer box body 1, and multiple fans 82 are evenly installed on the upper inner part of the outer shell 81. Multiple air outlet pipes 83 are evenly spaced and connected to the bottom of the outer shell 81. Multiple air vents 831 are evenly spaced on the top cover 2 and the outer box body 1, and heat dissipation channels 832 are evenly spaced on the inner frame 4 and the partition 41. The upper and lower sides of the heat dissipation channel 832 are respectively connected to the air vents 831 on the top cover 2 and the outer box body 1, and the air outlet pipe 83 is connected to the air vents 831 on the outer box body 1.

[0034] When in use, if the inside of the device needs to be cooled, the fan 82 can be controlled to start and inject gas into the vent 831 on the outer box 1 through the air outlet pipe 83. The gas will enter the heat dissipation channel 832 and finally be discharged through the vent 831 on the top cover 2, so that the partition 41 and the inner frame 4 inside the device dissipate heat, and the battery 5 is close to the partition 41 and the inner frame 4, dissipating the heat dissipated by the battery 5, so as to achieve the effect of dissipating heat for the battery 5.

[0035] like Figure 8-Figure 10 As shown, a cooling mechanism is also included, and the cooling mechanism includes a liquid storage frame 91, a liquid outlet pipe 95, a heat dissipation fin 93, a water pump 94 and a return pipe 92. The liquid storage frame 91 is connected to the middle of the left side of the outer box body 1, and a cooling chamber is opened at the bottom of the outer box body 1. The liquid storage frame 91 is provided with heat dissipation fins 93. The return pipe 92 is connected between the front side of the liquid storage frame 91 and the front side of the cooling chamber. A water pump 94 is installed on the rear side of the liquid storage frame 91, and a liquid outlet pipe 95 is connected between the liquid outlet end of the water pump 94 and the rear side of the cooling chamber.

[0036] During use, coolant can be added to the liquid storage frame 91, and the coolant can be dissipated through the cooling fins 93. Then, the water pump 94 can be controlled to inject the coolant into the cooling chamber through the liquid outlet pipe 95 to cool the outer box body 1. At the same time, since the cooling chamber is close to the air outlet pipe 83, the gas in the air outlet pipe 83 can also be cooled, and the coolant in the cooling chamber can flow back to the liquid storage frame 91 through the reflux pipe 92 to realize the circulation cooling of the coolant.

[0037] like Fig.11 As shown, a filter screen 11 is also included. The filter screens 11 are evenly spaced and installed on the outer shell 81. The filter screens 11 are close to the air inlet end of the fan 82, so that the fan 82 can filter impurities in the gas when taking in air.

[0038] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A lithium battery safety explosion-proof device, characterized in that: The invention comprises an outer box (1), a top cover (2), an inner frame (4), a partition (41), a battery (5), a connecting structure, a pushing mechanism and a squeezing mechanism, wherein the top of the outer box (1) is connected to the top cover (2), the inner frame (4) is connected to the inner frame (4), a plurality of partitions (41) are evenly spaced and connected to the inner frame (4), the partitions (41) divide the space in the inner frame (4) into a plurality of storage chambers, each storage chamber contains a battery (5), the battery (5) is provided with a connecting structure for connecting the inside of the battery (5) with the outside, the battery (5) is provided with a pushing mechanism, and a squeezing mechanism for opening the connecting structure is provided between the pushing mechanism and the connecting structure; The communication structure comprises a rotating disk (61) and an air leakage disk (62); the top of the battery (5) is connected to the air leakage disk (62); four air leakage holes are evenly spaced apart on the air leakage disk (62); the air leakage holes connect the inside of the battery (5) with the outside; the air leakage disk (62) is rotatably connected to the rotating disk (61); the rotating disk (61) is evenly spaced apart with communication holes; The pushing mechanism comprises a connection box (71), a connecting pipe (72), a piston plate (73), an elastic member (74) and an air bag (75); the connection box (71) is connected to the middle of the top of the battery (5); the connection box (71) covers the outside of the rotating disk (61); the piston plate (73) is slidably connected inside the connection box (71); an elastic member (74) is connected between the piston plate (73) and the connection cover; an air bag (75) is arranged in each storage chamber of the inner frame (4); the air bag (75) covers the battery (5); and a connecting pipe (72) is connected between the air bag (75) and the upper part of the connection box (71); The extrusion mechanism comprises an externally threaded rod (631) and an internally threaded sleeve (63); the internally threaded sleeve (63) is connected to the middle of the top of the rotating disk (61); the externally threaded rod (631) is connected to the middle of the bottom of the piston plate (73); and the externally threaded rod (631) is threadably matched with the internally threaded sleeve (63).

2. A lithium battery safety explosion-proof device according to claim 1, characterized in that: It also includes a heat dissipation mechanism, which includes an outer shell (81), a fan (82) and an air outlet pipe (83). The outer shell (81) is mounted on the outer box (1), a plurality of fans (82) are evenly spacedly mounted on the upper portion of the outer shell (81), and a plurality of air outlet pipes (83) are evenly spacedly connected to the bottom of the outer shell (81).

3. A lithium battery safety explosion-proof device according to claim 2, characterized in that: The top cover (2) and the outer box body (1) are both provided with a plurality of ventilation holes (831) at even intervals, the inner frame (4) and the partition plate (41) are both provided with heat dissipation channels (832) at even intervals, the upper and lower sides of the heat dissipation channels (832) are respectively connected to the ventilation holes (831) on the top cover (2) and the outer box body (1), and the air outlet pipe (83) is connected to the ventilation holes (831) on the outer box body (1).

4. A lithium battery safety explosion-proof device according to claim 3, characterized in that: The invention also comprises a cooling mechanism, the cooling mechanism comprising a liquid storage frame (91), a liquid outlet pipe (95), heat dissipation fins (93), a water pump (94) and a return pipe (92); the outer box body (1) is connected to the liquid storage frame (91); a cooling chamber is provided at the bottom of the outer box body (1); the liquid storage frame (91) is provided with heat dissipation fins (93); the return pipe (92) is connected between the liquid storage frame (91) and the cooling chamber; the liquid storage frame (91) is installed with a water pump (94); and the liquid outlet end of the water pump (94) is connected to the cooling chamber via a liquid outlet pipe (95).

5. A lithium battery safety explosion-proof device according to claim 4, characterized in that: It also includes a filter screen (11), the filter screens (11) being evenly spaced and installed on the outer shell (81), and the filter screens (11) being close to the air inlet end of the fan (82).

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