Large-tonnage forklift radiating and cooling device and method

Abstract

The invention relates to the technical field of forklift radiating and cooling devices, and discloses a large-tonnage forklift radiating and cooling device and method.The large-tonnage forklift radiating and cooling device comprises a first battery pack, a second battery pack is arranged on the outer wall of the first battery pack, a third battery pack is arranged on the outer wall of the second battery pack, and a fourth battery pack is arranged on the outer wall of the third battery pack; an air cooling assembly is installed at the bottom of the first battery pack, and a liquid cooling assembly is installed on the outer wall of the air cooling assembly. According to the large-tonnage forklift radiating and cooling device and method, an air cooling plate is arranged at the bottom of a first battery pack, so that air at the bottom of the first battery pack can enter an inner cavity of the air cooling plate and flow outwards along an air duct, and heat generated outside the first battery pack can be transferred outwards; and the water cooling plate is arranged at the top of the first battery pack, so that cooling liquid circulates in an inner cavity of the water cooling plate, and the top and the bottom of the first battery pack can be cooled under the combined action of the water cooling plate and the air cooling plate.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation and cooling devices for forklifts, and in particular to a heat dissipation and cooling device and method for large-tonnage forklifts. Background Art

[0002] A forklift is an industrial handling vehicle, which refers to various wheeled handling vehicles that load and unload, stack and short-distance transport of palletized goods. It is often used for the transportation of large objects in warehouses and is usually driven by a fuel engine or battery. Battery-driven forklifts require temperature control of the forklift's power battery during use, which requires the use of a heat dissipation cooling device.

[0003] When using traditional power battery heat dissipation and cooling equipment, air cooling equipment is often installed directly on the outside of the power battery pack to blow out the heat generated by the power battery. However, traditional air cooling equipment only removes the generated heat through air circulation, and the heat dissipation efficiency is low. During long-term high-intensity work, the temperature of the power battery will be high, which will lead to certain safety hazards in the use of the power battery. Summary of the invention

[0004] The present invention provides a large-tonnage forklift heat dissipation cooling device and method, which solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a heat dissipation and cooling device and method for a large-tonnage forklift, comprising a No. 1 battery pack, a No. 2 battery pack being provided on the outer wall of the No. 1 battery pack, a No. 3 battery pack being provided on the outer wall of the No. 2 battery pack, a No. 4 battery pack being provided on the outer wall of the No. 3 battery pack, an air cooling assembly being installed at the bottom of the No. 1 battery pack, a liquid cooling assembly being installed on the outer wall of the air cooling assembly, a monitoring assembly being installed on the top of the No. 1 battery pack, a contact column being fixedly mounted on the top of the No. 1 battery pack, and a connecting wire being movably sleeved on the outer wall of the contact column.

[0006] As a preferred technical solution of the present invention: the air cooling assembly includes an air cooling plate, the outer wall of the air cooling plate is fixedly equipped with a fixing frame, the top of the air cooling plate is fixedly equipped with a support block, the outer wall of the fixing frame is fixedly equipped with a filter plate, the inner cavity of the fixing frame is fixedly equipped with a guide fan, the inner cavity of the air cooling plate is provided with an air duct, and the outer wall of the air duct is provided with an air outlet.

[0007] As a preferred technical solution of the present invention: the liquid cooling component includes a coolant tank, a water pump is provided on the outer wall of the coolant tank, a connecting pipe is fixedly installed on the outer wall of the water pump, a water cooling plate is installed on the outer wall of the connecting pipe, a water cooling channel is opened in the inner cavity of the water cooling plate, a guide pipe is fixedly installed on the top of the water cooling plate, a radiator is fixedly installed on the outer wall of the guide pipe, a return pipe is fixedly installed on the outer wall of the radiator, a heat exhaust fan is fixedly installed on the outer wall of the radiator, and a transfer pipe is fixedly installed on the outer wall of the coolant tank.

[0008] As a preferred technical solution of the present invention: the monitoring component includes a heat-conducting plate, a heat-conducting tube is fixedly installed on the top of the heat-conducting plate, a sealed tube is fixedly installed on the top of the heat-conducting tube, a one-way valve is fixedly installed on the outer wall of the sealed tube, a limiting rod is fixedly installed on the inner wall of the one-way valve, a supporting spring is movably sleeved on the outer wall of the limiting rod, a movable plate is movably sleeved on the outer wall of the limiting rod, a closing plug is fixedly installed on the outer wall of the movable plate, an air guide tube is fixedly installed on the outer wall of the one-way valve, a driving tube is fixedly installed on the bottom of the air guide tube, a driving piston is movably sleeved in the inner cavity of the driving tube, a lifting plate is fixedly installed on the top of the driving piston, a guide rod is movably sleeved in the inner cavity of the lifting plate, and a lifting frame is installed on the outer wall of the lifting plate.

[0009] As a preferred technical solution of the present invention: the outlet position of the air duct corresponds to the installation position of the ducting fan, there are two fixing frames, and the two fixing frames are respectively installed on the outer walls on both sides of the air cooling plate.

[0010] As a preferred technical solution of the present invention: the outer wall of the connecting pipe away from the water pump is connected to the inner cavity of the water cooling channel, the outer wall of the guide pipe away from the water cooling plate is connected to the inner cavity of the radiator, the outer wall of the return pipe away from the radiator is connected to the outer wall of the coolant tank, and the outer wall of the transfer pipe away from the coolant tank is connected to the water pump.

[0011] As a preferred technical solution of the present invention: the inner cavity of the heat-conducting tube is filled with liquid mercury, the two ends of the outer wall of the support spring are respectively in contact with the outer wall of the movable plate and the inner wall of the one-way valve, the outer wall diameter of the closing plug is equal to the inner wall diameter of the sealed tube, and the inner cavity of the sealed tube is filled with compressed air.

[0012] As a preferred technical solution of the present invention: the inner wall diameter of the one-way valve is larger than the outer wall diameter of the closing plug, the inner wall diameter of the drive tube is smaller than the inner wall diameter of the air guide tube, and the outer wall diameter of the bottom of the drive piston is equal to the inner wall diameter of the drive tube.

[0013] As a preferred technical solution of the present invention: the bottom of the guide rod is connected to the top of the No. 1 battery pack, the bottom of the connecting wire is in contact with the outer wall of the bottom of the lifting frame, the inner wall diameter of the driving tube is smaller than the inner wall diameter of the air guide tube, and the lifting frame is made of ABS plastic.

[0014] A method for using a heat dissipation cooling device for a large-tonnage forklift includes the following steps:

[0015] S1: During the normal use of the No. 1 battery pack, the No. 2 battery pack, the No. 3 battery pack, and the No. 4 battery pack, cooling and heat dissipation are required. Through the air cooling plate provided on the bottom of the No. 1 battery pack and the air duct opened in the inner cavity of the air cooling plate, air can be blown or sucked into the inner cavity of the air duct under the action of the guide fan. When sucking air, the air in the inner cavity of the air duct can be extracted. The air outlet holes provided on the outer wall of the air duct, when the guide fan draws air outward, the hot air generated by the No. 1 battery pack, the No. 2 battery pack, the No. 3 battery pack, and the No. 4 battery pack is sucked into the inner cavity of the air duct, and flows outward along the inner cavity of the air duct, so that the heat can be discharged outward;

[0016] S2: When the ducting fans are blowing, the ducting fans on both sides draw external air into the inner cavity of the air duct. After the external air enters the inner cavity of the air duct, it is released to the bottom of the No. 1 battery pack through the air outlet. The external cold air can contact the bottom of the No. 1 battery pack, and can further achieve heat dissipation and cooling of the No. 1 battery pack. Under the action of the ducting fans, air can be blown and sucked, and the bottom of the No. 1 battery pack, the No. 2 battery pack, the No. 3 battery pack, and the No. 4 battery pack can be cooled;

[0017] S3: Secondly, during the heat dissipation process of the air-cooled plate, the water pump is started, and the coolant in the inner cavity of the coolant tank is pumped into the inner cavity of the water-cooled plate under the action of the water pump, so that the coolant flows along the inner wall of the water-cooled channel. The bottom of the water-cooled plate is directly attached to the top of the No. 1 battery pack. Under the action of the coolant, the temperature of the outer wall of the water-cooled plate is relatively low, and the tops of the No. 1 battery pack, the No. 2 battery pack, the No. 3 battery pack, and the No. 4 battery pack can be cooled and dissipated under the action of the water-cooled plate. After the coolant flows through the inner cavity of the water-cooled plate, it enters the inner cavity of the radiator through the guide pipe. Under the action of the radiator and the heat exhaust fan, the temperature of the coolant is reduced, and it flows back to the inner cavity of the coolant tank through the reflux pipe;

[0018] S4: During the normal heat dissipation process of the air cooling plate and the water cooling plate, the temperatures of the No. 1 battery pack, the No. 2 battery pack, the No. 3 battery pack, and the No. 4 battery pack are at normal operating temperatures. If the inner cavity of the No. 1 battery pack is abnormally overheated, it will cause a short circuit or bulge. At this time, the temperature in the inner cavity of the No. 1 battery pack cannot be reduced under the action of the air cooling plate and the water cooling plate, and the temperature will be transferred to the bottom of the heat conducting plate, and then transferred to the liquid mercury in the inner cavity of the heat conducting pipe under the action of the heat conducting plate, so that the volume of the liquid mercury expands, thereby squeezing the compressed air in the inner cavity of the heat conducting pipe and the sealed tube. The mercury will expand as the temperature rises, thereby continuously squeezing the compressed air in the inner cavity of the sealed tube. The compressed air can continuously push the movement of the sealing plug, so that the sealing plug moves along the inner wall of the sealed tube until it moves into the inner cavity of the one-way valve. At this time, the compressed air in the inner cavity of the sealed tube will be released and quickly enter the inner cavity of the air guide tube and the driving tube, and drive the driving piston, so that the driving piston moves upward along the inner wall of the driving tube, thereby lifting the lifting plate. Under the action of the lifting plate, the lifting frame can be driven to move upward, so that the connecting wire can be detached from the outer wall of the contact column, thereby realizing the power-off operation of the No. 1 battery pack, so that the inner cavity of the No. 1 battery pack can be powered off in time when an abnormal situation occurs.

[0019] The present invention has the following beneficial effects:

[0020] 1. The heat dissipation cooling device and method for a large-tonnage forklift can drive the air circulation in the inner cavity of the air cooling plate under the action of the ventilating fan by means of an air cooling plate arranged at the bottom of the No. 1 battery pack, so that the air at the bottom of the No. 1 battery pack can enter the inner cavity of the air cooling plate and flow outward along the air duct, so that the heat generated outside the No. 1 battery pack can be transferred outward, and a water cooling plate is arranged at the top of the No. 1 battery pack, so that the coolant circulates in the inner cavity of the water cooling plate, and a radiator is used to cool the coolant, and the top and bottom of the No. 1 battery pack can be cooled under the joint action of the water cooling plate and the air cooling plate, thereby avoiding the low cooling efficiency of traditional cooling equipment.

[0021] 2. The large-tonnage forklift heat dissipation cooling device and method, through the heat conductive plate installed in the inner cavity of the water-cooled plate, is directly installed on the top of the No. 1 battery pack. When the inner cavity of the No. 1 battery pack is abnormally high in temperature, it indicates that a short circuit has occurred inside the battery pack. At this time, the abnormally high temperature of the battery pack is transferred to the heat conductive plate under the action of the heat conductive plate, and the temperature is transferred to the heat conductive tube under the action of the heat conductive plate, so that the volume of liquid mercury expands, thereby allowing the compressed gas in the sealed tube to enter the drive tube, and the bulging short circuit of the battery pack can be monitored under the action of liquid mercury.

[0022] 3. The heat dissipation and cooling device and method for large-tonnage forklifts, through the air duct arranged on the outer wall of the sealed tube, after the volume of liquid mercury in the heat-conducting tube expands, it will cause the gas in the sealed tube to push the sealing plug, so that the sealing plug moves from the inner cavity of the sealed tube to the one-way valve, and the gas in the sealed tube can be released, so that the gas drives the driving piston, so that the driving piston can move along the guide rod, thereby driving the lifting frame, and under the action of the lifting frame, the connecting wire and the contact column can be separated to achieve the effect of power off, so that when a battery pack fails and shorts, the connecting wire and the contact column can be separated in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the fixed frame structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the air-cooling plate of the present invention;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the air-cooling plate of the present invention;

[0027] Figure 5 This is a schematic diagram of the support block structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the water cooling plate of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the return pipe of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the water cooling plate of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the heat conducting plate of the present invention;

[0032] Fig.10 It is a schematic diagram of the heat pipe structure of the present invention;

[0033] Fig.11 This is a schematic diagram of the closed tube structure of the present invention;

[0034] Fig.12 This is a schematic diagram of the airway structure of the present invention;

[0035] Fig.13 For the present invention Fig.10 Enlarged structural diagram at A in the middle.

[0036] In the figure: 1. Battery pack No. 1; 2. Battery pack No. 2; 3. Battery pack No. 3; 4. Battery pack No. 4; 5. Air cooling assembly; 6. Liquid cooling assembly; 7. Monitoring assembly; 8. Connecting wires; 9. Contact posts;

[0037] 501, air cooling plate; 502, fixing frame; 503, supporting block; 504, filter plate; 505, air guide fan; 506, air duct; 507, air outlet;

[0038] 601, coolant tank; 602, water pump; 603, connecting pipe; 604, water cooling plate; 605, water cooling channel; 606, guide pipe; 607, radiator; 608, return pipe; 609, heat exhaust fan; 6010, transfer pipe;

[0039] 701, heat transfer plate; 702, heat transfer pipe; 703, sealing pipe; 704, one-way valve; 705, limit rod; 706, support spring; 707, moving plate; 708, closing plug; 709, air guide tube; 7010, drive tube; 7011, drive piston; 7012, guide rod; 7013, lifting plate; 7014, lifting frame. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1 - Fig.13 A heat dissipation and cooling device and method for a large-tonnage forklift, comprising a No. 1 battery pack 1, a No. 2 battery pack 2 is arranged on the outer wall of the No. 1 battery pack 1, a No. 3 battery pack 3 is arranged on the outer wall of the No. 2 battery pack 2, a No. 4 battery pack 4 is arranged on the outer wall of the No. 3 battery pack 3, an air cooling component 5 is installed at the bottom of the No. 1 battery pack 1, a liquid cooling component 6 is installed on the outer wall of the air cooling component 5, a monitoring component 7 is installed on the top of the No. 1 battery pack 1, a contact column 9 is fixedly mounted on the top of the No. 1 battery pack 1, and a connecting wire 8 is movably sleeved on the outer wall of the contact column 9.

[0042] In the above structure, an air cooling plate 501 is arranged at the bottom of the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4, and a ventilator 505 is arranged on the outer wall of the air cooling plate 501. The ventilator 505 can be forward and reversed. When the ventilator 505 is reversed, it can ventilate the inner cavity of the air cooling plate 501, and after the air enters the inner cavity of the air duct 506, it is released outward through the air outlet 507 opened on the outer wall of the air duct 506, so that the air can fully contact the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 on the top of the air cooling plate 501, and perform preliminary circulation heat dissipation on the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4.

[0043] In a preferred embodiment: the air cooling component 5 includes an air cooling plate 501, the outer wall of the air cooling plate 501 is fixedly equipped with a fixing frame 502, the top of the air cooling plate 501 is fixedly equipped with a support block 503, the outer wall of the fixing frame 502 is fixedly equipped with a filter plate 504, the inner cavity of the fixing frame 502 is fixedly equipped with a guide fan 505, the inner cavity of the air cooling plate 501 is provided with an air duct 506, and the outer wall of the air duct 506 is provided with an air outlet 507.

[0044] In the above structure, through the air duct 506 opened in the inner cavity of the air-cooling plate 501 and the air outlet 507 opened on the outer wall of the air duct 506, the inner cavity of the air-cooling plate 501 can be ventilated under the action of the fan 505, and the air enters the inner cavity of the air duct 506 and circulates in the inner cavity of the air duct 506. In the process of circulation, the heat generated by the No. 1 battery pack 1 during use can be better taken away, thereby reflecting the cooling and heat dissipation of the No. 1 battery pack 1.

[0045] In a preferred embodiment: the liquid cooling component 6 includes a coolant tank 601, a water pump 602 is provided on the outer wall of the coolant tank 601, a connecting pipe 603 is fixedly installed on the outer wall of the water pump 602, a water cooling plate 604 is installed on the outer wall of the connecting pipe 603, a water cooling channel 605 is opened in the inner cavity of the water cooling plate 604, a guide pipe 606 is fixedly installed on the top of the water cooling plate 604, a radiator 607 is installed on the outer wall of the guide pipe 606, a return pipe 608 is fixedly installed on the outer wall of the radiator 607, a heat exhaust fan 609 is installed on the outer wall of the radiator 607, and a transfer pipe 6010 is fixedly installed on the outer wall of the coolant tank 601.

[0046] In the above structure, by means of the water cooling plate 604 disposed on the top of the No. 1 battery pack 1, the coolant in the inner cavity of the coolant tank 601 can enter the inner cavity of the water cooling plate 604 through the water cooling channel 605 under the action of the connecting pipe 603, so that the coolant circulates in the inner cavity of the water cooling plate 604, so that when the water cooling plate 604 contacts with the tops of the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4, the heat generated by the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 can be transferred to the inner cavity of the water cooling plate 604, thereby cooling down the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4, so that the No. 1 battery pack 1 can maintain a normal working temperature.

[0047] In a preferred embodiment, the monitoring assembly 7 includes a heat conducting plate 701, a heat conducting pipe 702 is fixedly mounted on the top of the heat conducting plate 701, a sealed pipe 703 is fixedly mounted on the top of the heat conducting pipe 702, a one-way valve 704 is fixedly mounted on the outer wall of the sealed pipe 703, a limiting rod 705 is fixedly mounted on the inner wall of the one-way valve 704, a supporting spring 706 is movably sleeved on the outer wall of the limiting rod 705, a moving plate 707 is movably sleeved on the outer wall of the limiting rod 705, and a movable plate 707 is movably sleeved on the outer wall of the limiting rod 705. The outer wall of the movable plate 707 is fixedly equipped with a closing plug 708, the outer wall of the one-way valve 704 is fixedly equipped with an air guide tube 709, the bottom of the air guide tube 709 is fixedly equipped with a driving tube 7010, the inner cavity of the driving tube 7010 is movably connected with a driving piston 7011, the top of the driving piston 7011 is fixedly equipped with a lifting plate 7013, the inner cavity of the lifting plate 7013 is movably connected with a guide rod 7012, and the outer wall of the lifting plate 7013 is installed with a lifting frame 7014.

[0048] In the above structure, the heat conducting plate 701 is arranged on the top of the No. 1 battery pack 1, so that the bottom of the heat conducting plate 701 is fully in contact with the top of the No. 1 battery pack 1, and the liquid mercury stored in the inner cavity of the heat conducting tube 702 will double in volume when the No. 1 battery pack 1 is at normal working temperature. At this time, the gas in the inner cavity of the heat conducting tube 702 will be squeezed outward, so that the gas enters the inner cavity of the sealed tube 703 and the one-way valve 704.

[0049] In a preferred embodiment, the outlet position of the air duct 506 corresponds to the installation position of the air guide fan 505 , there are two fixing frames 502 , and the two fixing frames 502 are respectively installed on the outer walls of both sides of the air cooling plate 501 .

[0050] In the above structure, through the air duct 506 opened in the inner cavity of the air cooling plate 501, under the action of the forward rotation of the fan 505 in the inner cavity of the fixed frame 502, the air in the inner cavity of the air duct 506 can be drawn outward, and move along the inner cavity of the air duct 506, and be discharged outward through the outlet of the air duct 506. At this time, under the action of the air outlet 507, the hot air at the bottom of the No. 1 battery pack 1 can be drawn into the inner cavity of the air duct 506, so that the hot air generated by the No. 1 battery pack 1 can be drawn outward, and the heat dissipation effect of the bottom of the No. 1 battery pack 1 can be achieved during the forward and reverse rotation of the fan 505.

[0051] In a preferred embodiment: the outer wall of the connecting pipe 603 at one end away from the water pump 602 is connected to the inner cavity of the water cooling channel 605, the outer wall of the guide pipe 606 at one end away from the water cooling plate 604 is connected to the inner cavity of the radiator 607, the outer wall of the return pipe 608 at one end away from the radiator 607 is connected to the outer wall of the coolant tank 601, and the outer wall of the transfer pipe 6010 at one end away from the coolant tank 601 is connected to the water pump 602.

[0052] In the above structure, the coolant tank 601 and the water pump 602 can be connected by the transfer pipe 6010 arranged on the outer wall of the coolant tank 601, and the water pump 602 and the water cooling plate 604 can be connected in series by the action of the connecting pipe 603. The guide pipe 606 arranged on the outer wall of the radiator 607 can connect the water cooling plate 604 and the radiator 607 by the action of the guide pipe 606. The reflux pipe 608 can connect the radiator 607 and the coolant tank 601 in series, so that the coolant tank 601 and the water pump 602, the water cooling plate 604 and the radiator 607 can be connected in series, so that a complete cooling cycle can be formed.

[0053] In a preferred embodiment: the inner cavity of the heat-conducting tube 702 is filled with liquid mercury, the two ends of the outer wall of the support spring 706 are respectively in contact with the outer wall of the movable plate 707 and the inner wall of the one-way valve 704, the outer wall diameter of the closing plug 708 is equal to the inner wall diameter of the sealed tube 703, and the inner cavity of the sealed tube 703 is filled with compressed air.

[0054] In the above structure, by means of the heat conducting plate 701 arranged on the top of the No. 1 battery pack 1 and the heat conducting tube 702 arranged on the top of the heat conducting plate 701, when a short circuit bulge appears inside the No. 1 battery pack 1, the temperature inside it will become abnormal and will rise sharply in a short time. At this time, the temperature can be transferred to the mercury in the inner cavity of the heat conducting tube 702 under the action of the heat conducting plate 701, so that it will expand due to the heat. At this time, the temperature in the inner cavity of the No. 1 battery pack 1 will be higher, and the mercury in the inner cavity of the heat conducting tube 702 will expand in volume when heated. The greater the volume expansion of mercury, the more air will be squeezed in the inner cavities of the heat conducting tube 702 and the sealed tube 703, so that the pressure in the inner cavities of the heat conducting tube 702 and the sealed tube 703 increases, thereby exceeding the support limit of the support spring 706, so that the closing plug 708 can move from the inner cavity of the sealed tube 703 into the inner cavity of the one-way valve 704.

[0055] In a preferred embodiment: the inner wall diameter of the one-way valve 704 is larger than the outer wall diameter of the closing plug 708, the inner wall diameter of the driving tube 7010 is smaller than the inner wall diameter of the air guide tube 709, and the outer wall diameter of the bottom of the driving piston 7011 is equal to the inner wall diameter of the driving tube 7010.

[0056] In the above structure, through the drive tube 7010 set on the outer wall of the air guide tube 709, when the liquid mercury in the inner cavity of the heat-conducting tube 702 expands due to heat, the air pressure in the inner cavities of the heat-conducting tube 702 and the sealed tube 703 increases, thereby breaking through the support limit of the support spring 706, so that the closing plug 708 moves from the inner cavity of the sealed tube 703 to the inner cavity of the one-way valve 704. Since the outer wall diameter of the closing plug 708 is smaller than the inner wall diameter of the one-way valve 704, there is a certain gap between the closing plug 708 and the one-way valve 704, so that the gas in the inner cavity of the sealed tube 703 passes into the inner cavity of the air guide tube 709 and the drive tube 7010, and drives the drive piston 7011.

[0057] In a preferred embodiment: the bottom of the guide rod 7012 is connected to the top of the No. 1 battery pack 1, the bottom of the connecting wire 8 is in contact with the outer wall of the bottom of the lifting frame 7014, the inner wall diameter of the driving tube 7010 is smaller than the inner wall diameter of the air guide tube 709, and the lifting frame 7014 is made of ABS plastic.

[0058] In the above structure, by means of the guide rod 7012 set on the top of the No. 1 battery pack 1, the guide rod 7012 can play a certain limiting role on the lifting plate 7013, so that the driving piston 7011 can move upward along the outer wall of the guide rod 7012, and the bottom of the lifting frame 7014 can contact the bottom of the connecting wire 8. When the driving piston 7011 is driven, the lifting plate 7013 can move upward, and then the connecting wire 8 is pulled up from the outer wall of the contact column 9 under the action of the lifting frame 7014, so that the connecting wire 8 is separated from the contact column 9.

[0059] A method for using a heat dissipation cooling device for a large-tonnage forklift includes the following steps:

[0060] S1: During the normal use of the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4, cooling and heat dissipation are required. Through the air cooling plate 501 set on the bottom of the No. 1 battery pack 1 and the air duct 506 opened in the inner cavity of the air cooling plate 501, the air guide fan 505 can blow or suck air into the inner cavity of the air duct 506. When sucking air, the air in the inner cavity of the air duct 506 can be extracted. The air outlet 507 opened on the outer wall of the air duct 506, when the air guide fan 505 draws air outward, the hot air generated by the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 is sucked into the inner cavity of the air duct 506, and flows outward along the inner cavity of the air duct 506, so that the heat can be discharged outward;

[0061] S2: When the guide fans 505 are blowing, the guide fans 505 on both sides draw external air into the inner cavity of the air duct 506. After the external air enters the inner cavity of the air duct 506, it is released to the bottom of the No. 1 battery pack 1 through the air outlet 507. The external cold air can contact the bottom of the No. 1 battery pack 1, and can further achieve heat dissipation and cooling of the No. 1 battery pack 1. Under the action of the guide fans 505, air can be blown and sucked, and the bottoms of the No. 1 battery pack 1, the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 can be cooled.

[0062] S3: Secondly, during the heat dissipation process of the air-cooled plate 501, the water pump 602 is started. Under the action of the water pump 602, the coolant in the inner cavity of the coolant tank 601 is pumped into the inner cavity of the water-cooled plate 604, so that the coolant flows along the inner wall of the water-cooled channel 605. The bottom of the water-cooled plate 604 is directly attached to the top of the No. 1 battery pack 1. Under the action of the coolant, the temperature of the outer wall of the water-cooled plate 604 is relatively low. Under the action of the water-cooled plate 604, the tops of the No. 1 battery pack 1, the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 can be cooled and dissipated. After the coolant flows through the inner cavity of the water-cooled plate 604, it enters the inner cavity of the radiator 607 through the guide pipe 606. Under the action of the radiator 607 and the heat exhaust fan 609, the temperature of the coolant is reduced, and it flows back to the inner cavity of the coolant tank 601 through the reflux pipe 608.

[0063] S4: During the normal heat dissipation process of the air cooling plate 501 and the water cooling plate 604, the temperatures of the No. 1 battery pack 1 and the No. 2 battery pack 2, the No. 3 battery pack 3, and the No. 4 battery pack 4 are at normal operating temperatures. If the inner cavity of the No. 1 battery pack 1 is abnormally overheated, it will cause a short circuit or bulging. At this time, the temperature in the inner cavity of the No. 1 battery pack 1 cannot be reduced under the action of the air cooling plate 501 and the water cooling plate 604, and the temperature will be transferred to the bottom of the heat conducting plate 701, and then transferred to the liquid mercury in the inner cavity of the heat conducting pipe 702 under the action of the heat conducting plate 701, so that the volume of the liquid mercury expands, thereby squeezing the compressed air in the inner cavities of the heat conducting pipe 702 and the sealed tube 703. The mercury will expand as the temperature rises, thereby continuously squeezing the compressed air in the inner cavity of the sealed tube 703, so that the compressed air The air can continuously push the movement of the sealing plug 708, so that the sealing plug 708 moves along the inner wall of the sealed tube 703 until it moves into the inner cavity of the one-way valve 704. At this time, the compressed air in the inner cavity of the sealed tube 703 will be released, and quickly enter the inner cavity of the air guide tube 709 and the driving tube 7010, and drive the driving piston 7011, so that the driving piston 7011 moves upward along the inner wall of the driving tube 7010, thereby lifting the lifting plate 7013. Under the action of the lifting plate 7013, the lifting frame 7014 can be driven to move upward, so that the connecting wire 8 can be detached from the outer wall of the contact column 9, thereby realizing the power-off operation of the No. 1 battery pack 1, so that the inner cavity of the No. 1 battery pack 1 can be powered off in time when an abnormal situation occurs.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-tonnage forklift heat dissipation cooling device and method, comprising a No. 1 battery pack (1), characterized in that: The outer wall of the No. 1 battery pack (1) is provided with a No. 2 battery pack (2), the outer wall of the No. 2 battery pack (2) is provided with a No. 3 battery pack (3), the outer wall of the No. 3 battery pack (3) is provided with a No. 4 battery pack (4), the bottom of the No. 1 battery pack (1) is provided with an air cooling component (5), the outer wall of the air cooling component (5) is provided with a liquid cooling component (6), the top of the No. 1 battery pack (1) is provided with a monitoring component (7), the top of the No. 1 battery pack (1) is fixedly equipped with a contact column (9), and the outer wall of the contact column (9) is movably sleeved with a connecting wire (8).

2. A large-tonnage forklift heat dissipation cooling device and method according to claim 1, characterized in that: The air cooling component (5) comprises an air cooling plate (501), the outer wall of the air cooling plate (501) is fixedly equipped with a fixing frame (502), the top of the air cooling plate (501) is fixedly equipped with a supporting block (503), the outer wall of the fixing frame (502) is fixedly equipped with a filter plate (504), the inner cavity of the fixing frame (502) is fixedly equipped with a guide fan (505), the inner cavity of the air cooling plate (501) is provided with an air duct (506), and the outer wall of the air duct (506) is provided with an air outlet (507).

3. A large-tonnage forklift heat dissipation cooling device and method according to claim 2, characterized in that: The liquid cooling component (6) includes a cooling liquid tank (601), the outer wall of the cooling liquid tank (601) is provided with a water pump (602), the outer wall of the water pump (602) is fixedly equipped with a connecting pipe (603), the outer wall of the connecting pipe (603) is fixedly equipped with a water cooling plate (604), the inner cavity of the water cooling plate (604) is provided with a water cooling channel (605), the top of the water cooling plate (604) is fixedly equipped with a guide pipe (606), the outer wall of the guide pipe (606) is installed with a radiator (607), the outer wall of the radiator (607) is fixedly equipped with a return pipe (608), the outer wall of the radiator (607) is fixedly equipped with a heat exhaust fan (609), and the outer wall of the cooling liquid tank (601) is fixedly equipped with a transfer pipe (6010).

4. A large-tonnage forklift heat dissipation cooling device and method according to claim 1, characterized in that: The monitoring assembly (7) comprises a heat conducting plate (701), a heat conducting pipe (702) is fixedly mounted on the top of the heat conducting plate (701), a sealed pipe (703) is fixedly mounted on the top of the heat conducting pipe (702), a one-way valve (704) is fixedly mounted on the outer wall of the sealed pipe (703), a limiting rod (705) is fixedly mounted on the inner wall of the one-way valve (704), a supporting spring (706) is movably sleeved on the outer wall of the limiting rod (705), a movable plate (707) is movably sleeved on the outer wall of the limiting rod (705), and the movable plate (707) is movably sleeved on the outer wall of the limiting rod (705). 07) is fixedly equipped with a closing plug (708) on its outer wall, an air guide tube (709) is fixedly equipped on its outer wall of the one-way valve (704), a driving tube (7010) is fixedly equipped at the bottom of the air guide tube (709), a driving piston (7011) is movably sleeved in the inner cavity of the driving tube (7010), a lifting plate (7013) is fixedly equipped on the top of the driving piston (7011), a guide rod (7012) is movably sleeved in the inner cavity of the lifting plate (7013), and a lifting frame (7014) is installed on the outer wall of the lifting plate (7013).

5. The large-tonnage forklift heat dissipation cooling device and method according to claim 2, characterized in that: The outlet position of the air duct (506) corresponds to the installation position of the air guide fan (505), there are two fixing frames (502), and the two fixing frames (502) are respectively installed on the outer walls of both sides of the air cooling plate (501).

6. A large-tonnage forklift heat dissipation cooling device and method according to claim 3, characterized in that: The outer wall of the connecting pipe (603) at one end away from the water pump (602) is connected to the inner cavity of the water cooling channel (605); the outer wall of the guide pipe (606) at one end away from the water cooling plate (604) is connected to the inner cavity of the radiator (607); the outer wall of the return pipe (608) at one end away from the radiator (607) is connected to the outer wall of the coolant tank (601); and the outer wall of the transfer pipe (6010) at one end away from the coolant tank (601) is connected to the water pump (602).

7. A large-tonnage forklift heat dissipation cooling device and method according to claim 4, characterized in that: The inner cavity of the heat-conducting tube (702) is filled with liquid mercury, the two ends of the outer wall of the supporting spring (706) are in contact with the outer wall of the movable plate (707) and the inner wall of the one-way valve (704) respectively, the outer wall diameter of the closing plug (708) is equal to the inner wall diameter of the sealed tube (703), and the inner cavity of the sealed tube (703) is filled with compressed air.

8. The large-tonnage forklift heat dissipation cooling device and method according to claim 4, characterized in that: The inner wall diameter of the one-way valve (704) is larger than the outer wall diameter of the closing plug (708), the inner wall diameter of the driving tube (7010) is smaller than the inner wall diameter of the air guide tube (709), and the outer wall diameter of the bottom of the driving piston (7011) is equal to the inner wall diameter of the driving tube (7010).

9. The large-tonnage forklift heat dissipation cooling device and method according to claim 4, characterized in that: The bottom of the guide rod (7012) is connected to the top of the No. 1 battery pack (1), the bottom of the connecting wire (8) is in contact with the outer wall of the bottom of the lifting frame (7014), the inner wall diameter of the driving tube (7010) is smaller than the inner wall diameter of the air guide tube (709), and the lifting frame (7014) is made of ABS plastic.

10. The method for using the heat dissipation cooling device for a large tonnage forklift according to claim 9, characterized in that: The following steps are involved: S1: During normal use of the No. 1 battery pack (1) and the No. 2 battery pack (2), the No. 3 battery pack (3), and the No. 4 battery pack (4), cooling and heat dissipation are required. Through the air cooling plate (501) provided on the bottom of the No. 1 battery pack (1) and the air duct (506) opened in the inner cavity of the air cooling plate (501), air can be blown or sucked into the inner cavity of the air duct (506) under the action of the guide fan (505). When sucking air, the air in the inner cavity of the air duct (506) can be drawn out. The air outlet (507) opened on the outer wall of the air duct (506) allows the hot air generated by the No. 1 battery pack (1) and the No. 2 battery pack (2), the No. 3 battery pack (3), and the No. 4 battery pack (4) to be drawn into the inner cavity of the air duct (506) and circulate outward along the inner cavity of the air duct (506), so that the heat can be discharged outward. S2: When the guide fans (505) are blowing, the guide fans (505) on both sides draw external air into the inner cavity of the air duct (506). After the external air enters the inner cavity of the air duct (506), it is released to the bottom of the No. 1 battery pack (1) through the air outlet (507). The external cold air can contact the bottom of the No. 1 battery pack (1), and can further achieve heat dissipation and cooling of the No. 1 battery pack (1). Under the action of the guide fans (505), air can be blown and sucked, and the bottoms of the No. 1 battery pack (1), the No. 2 battery pack (2), the No. 3 battery pack (3), and the No. 4 battery pack (4) can be cooled. S3: Secondly, during the heat dissipation process of the air-cooled plate (501), the water pump (602) is started. Under the action of the water pump (602), the coolant in the inner cavity of the coolant tank (601) is pumped into the inner cavity of the water-cooled plate (604), so that the coolant flows along the inner wall of the water-cooled channel (605). The bottom of the water-cooled plate (604) is directly attached to the top of the No. 1 battery pack (1). Under the action of the coolant, the temperature of the outer wall of the water-cooled plate (604) is lower, and the water-cooled plate (604) can be cooled by the water. The tops of the No. 1 battery pack (1), the No. 2 battery pack (2), the No. 3 battery pack (3), and the No. 4 battery pack (4) are cooled and dissipated under the action of the cold plate (604). After the coolant flows through the inner cavity of the water-cooled plate (604), it enters the inner cavity of the radiator (607) through the guide pipe (606). The temperature of the coolant is reduced under the action of the radiator (607) and the heat exhaust fan (609), and then flows back to the inner cavity of the coolant tank (601) through the return pipe (608); S4: During the normal heat dissipation process of the air cooling plate (501) and the water cooling plate (604), the temperatures of the No. 1 battery pack (1) and the No. 2 battery pack (2), the No. 3 battery pack (3), and the No. 4 battery pack (4) are at normal operating temperatures. If the inner cavity of the No. 1 battery pack (1) has an abnormally high temperature, it will cause a short circuit or bulge. At this time, the temperature in the inner cavity of the No. 1 battery pack (1) cannot be reduced under the action of the air cooling plate (501) and the water cooling plate (604), and the temperature will be transferred to the bottom of the heat conducting plate (701), and under the action of the heat conducting plate (701), the temperature will be transferred to the liquid mercury in the inner cavity of the heat conducting pipe (702), so that the volume of the liquid mercury expands, thereby squeezing the compressed air in the inner cavity of the heat conducting pipe (702) and the sealed pipe (703). The mercury will expand as the temperature rises, thereby continuously squeezing the compressed air in the inner cavity of the sealed pipe (703), so that the compressed air The sealing plug (708) can be continuously pushed to move, so that the sealing plug (708) moves along the inner wall of the sealed tube (703) until it moves into the inner cavity of the one-way valve (704). At this time, the compressed air in the inner cavity of the sealed tube (703) will be released and quickly enter the inner cavities of the air guide tube (709) and the drive tube (7010), and drive the drive piston (7011), so that the drive piston (7011) moves upward along the inner wall of the drive tube (7010), thereby lifting the lifting plate (7013). Under the action of the lifting plate (7013), the lifting frame (7014) can be driven to move upward, so that the connecting wire (8) can be detached from the outer wall of the contact column (9), and the power-off operation of the No. 1 battery pack (1) is realized, so that the inner cavity of the No. 1 battery pack (1) can be powered off in time when an abnormal situation occurs.

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