Bottom heat dissipation device for new energy automobile battery

Abstract

The invention relates to the technical field of new energy automobile batteries, and discloses a bottom heat dissipation device for a new energy automobile battery, the bottom heat dissipation device comprises an automobile chassis, a mounting groove and a storage battery pack, a storage battery pack is mounted in the storage battery pack, a cooling mechanism is mounted in the mounting groove, and the cooling mechanism comprises a driving motor, a cooling shaft and a plurality of cooling fan blades; a plurality of ventilation pipes are arranged in the storage battery pack in a penetrating manner; cleaning mechanisms are mounted on the two sides of the mounting groove correspondingly, and each cleaning mechanism comprises a vertical groove, a sliding groove, a reciprocating lead screw, a guide rod and a driving assembly mounted on the inner wall of the vertical groove and used for driving the reciprocating lead screw to rotate; a moving frame is in threaded connection with the reciprocating lead screw and is in sliding connection with the guide rod; a mounting plate is mounted at the end, close to the storage battery pack, of the moving frame, a cleaning handle is mounted at the top of the mounting plate, and a brush is mounted at the top of the cleaning handle and can abut against the bottom of the storage battery pack. The heat dissipation effect of the storage battery pack of the new energy automobile can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle batteries, and in particular to a bottom heat dissipation device for new energy vehicle batteries. Background Art

[0002] At present, new energy vehicle batteries are one of the core components of new energy vehicles, and their performance directly affects many aspects such as the vehicle's range, safety, and cost.

[0003] However, most of the current heat dissipation devices for battery packs of new energy vehicles reduce the heat generated by the battery packs during operation by simply cooling the battery packs with air or water. However, such heat dissipation method has poor heat dissipation effect. Summary of the invention

[0004] The present application provides a bottom heat dissipation device for a new energy vehicle battery, which can improve the heat dissipation effect of a new energy vehicle battery pack, and adopts the following technical solutions: A bottom heat dissipation device for a new energy vehicle battery comprises a vehicle chassis, a mounting slot provided at the bottom of the vehicle chassis, and a battery pack bolted to the bottom of the mounting slot, wherein a battery pack is installed in the battery pack, a cooling mechanism is installed in the mounting slot, and the cooling mechanism comprises a driving motor installed on the top wall of the mounting slot, a cooling shaft installed on the output shaft of the driving motor, and a plurality of cooling fan blades fixedly connected to the side wall of the cooling shaft; a plurality of ventilation pipes are provided throughout the battery pack; and two sides of the mounting slot are respectively provided with cooling fans for cleaning the bottom of the battery pack. A cleaning mechanism, each group of the cleaning mechanism includes a vertical slot opened on one side of the installation slot, a slide slot opened at the bottom of the vertical slot, a reciprocating screw rotatably connected to the inner wall of the slide slot, a guide rod fixed to the inner wall of the slide slot, and a driving assembly installed on the inner wall of the vertical slot for driving the reciprocating screw to rotate; a movable frame is threadedly connected to the reciprocating screw, and the movable frame is slidably connected to the guide rod; a mounting plate is installed at one end of the movable frame close to the battery pack, a cleaning handle is installed on the top of the mounting plate, a brush is installed on the top of the cleaning handle, and the brush can abut against the bottom of the battery pack.

[0005] By adopting the above technical scheme, when the battery pack needs to be cooled, the driving motor is started first. At this time, the output shaft of the driving motor drives the cooling shaft to rotate, and the rotation of the cooling shaft drives the cooling fan blades to rotate. At this time, under the action of the ventilation pipe, the cooling fan blades rotate to cool the battery pack; in addition, when the cooling shaft rotates, the driving component drives the reciprocating screw to rotate under the action of the cooling shaft, and the reciprocating screw rotation drives the movable frame to move back and forth, the reciprocating movement of the movable frame drives the mounting plate to move back and forth, the reciprocating movement of the mounting plate drives the cleaning handle to move back and forth, and the reciprocating movement of the cleaning handle drives the brush to move back and forth, and the reciprocating movement of the brush can clean the bottom of the battery pack, thereby further cooling the battery pack; in summary, the provided cooling mechanism and cleaning mechanism can improve the heat dissipation effect of the battery pack of new energy vehicles.

[0006] Optionally, the driving assembly includes a first rotating shaft rotatably connected to the inner wall of the vertical groove near the mounting groove, a first bevel gear fixedly connected to the side wall of the cooling shaft, a second bevel gear installed on the first rotating shaft near one end of the cooling shaft, a third bevel gear installed on the other end of the first rotating shaft, a second rotating shaft rotatably connected to the inner wall of the vertical groove, a fourth bevel gear installed on the second rotating shaft near one end of the first rotating shaft, a fifth bevel gear fixedly connected to the other end of the second rotating shaft, and a sixth bevel gear fixedly connected to the side wall of the reciprocating screw; the two ends of the first rotating shaft are respectively in the vertical groove and the mounting groove, the first bevel gear is meshed with the second bevel gear, the third bevel gear is meshed with the fourth bevel gear, and the fifth bevel gear is meshed with the sixth bevel gear.

[0007] By adopting the above technical solution, the rotation of the cooling shaft drives the first bevel gear to rotate, the rotation of the first bevel gear drives the second bevel gear to rotate, the rotation of the second bevel gear drives the first rotating shaft to rotate, the rotation of the first rotating shaft drives the third bevel gear to rotate, the rotation of the third bevel gear drives the fourth bevel gear to rotate, the rotation of the fourth bevel gear drives the second rotating shaft to rotate, the rotation of the second rotating shaft drives the fifth bevel gear to rotate, the rotation of the fifth bevel gear drives the sixth bevel gear to rotate, and the rotation of the sixth bevel gear can drive the reciprocating screw to rotate; in summary, the set drive assembly is convenient for driving the reciprocating screw to rotate.

[0008] Optionally, a buffer mechanism for buffering the cleaning handle is installed in the mounting plate.

[0009] By adopting the above technical solution, the buffer mechanism is arranged so that when the cleaning handle touches a foreign object, it can move downward, thereby protecting the cleaning handle.

[0010] Optionally, the buffer mechanism includes a receiving groove opened at the top of the mounting plate, a buffer plate fixed to the bottom of the cleaning handle and slidably connected to the receiving groove, and a plurality of buffer springs fixed to the bottom of the buffer plate; one end of each buffer spring away from the buffer plate is fixed to the bottom of the receiving groove.

[0011] By adopting the above technical solution, the buffer plate and the plurality of buffer springs are provided, so that the cleaning handle can be buffered and thus the cleaning handle can be protected.

[0012] Optionally, the vertical groove and the mounting groove are connected via an inclined pipe.

[0013] By adopting the above technical solution, the inclined tube is provided, and the wind generated by the cooling fan blades can be blown toward the brush through the inclined tube and the vertical slot, thereby facilitating the cleaning of dust on the brush.

[0014] Optionally, a blocking mechanism for blocking the tops of multiple ventilation pipes is installed in the installation groove.

[0015] By adopting the above technical solution and setting up the blocking mechanism, when the electric vehicle needs to stop, it is convenient to block the tops of multiple ventilation pipes, thereby reducing the possibility of water entering the installation groove.

[0016] Optionally, the blocking mechanism includes a horizontal rod fixed to the inner wall of the mounting groove, a sliding sleeve slidably connected to the horizontal rod, a plurality of blocking springs fixed to the side of the sliding sleeve away from the cooling shaft, a blocking plate fixed to the bottom of the sliding sleeve, and an electromagnet installed on one side of the mounting groove; one end of each of the blocking springs away from the sliding sleeve is fixed to the inner wall of the mounting groove, a plurality of through holes are formed on the blocking plate, and the plurality of through holes are arranged one-to-one with the plurality of ventilation pipes; the blocking plate can be magnetically connected to the electromagnet.

[0017] By adopting the above technical solution, when it is necessary to block multiple ventilation pipes, the electromagnet is started first, and the electromagnet drives the blocking plate to move in a direction close to the electromagnet so that the electromagnet and the blocking plate are attracted. At this time, the multiple through holes on the blocking plate are misaligned with the multiple ventilation pipes, so that the multiple ventilation pipes can be blocked; in addition, the blocking plate moves in a direction close to the electromagnet to drive the sliding sleeve to move, and the movement of the sliding sleeve presses the multiple blocking springs; when the electric car is started, the electromagnet is turned off first, and the sliding sleeve is reset under the action of the multiple blocking springs. At this time, the multiple through holes are connected with the multiple ventilation pipes, which is convenient for cooling the battery pack; in summary, the provided blocking mechanism is convenient for blocking the tops of multiple ventilation pipes, thereby reducing the possibility of water entering the installation groove.

[0018] Optionally, a dust blocking mechanism is installed at the bottom of each ventilation pipe.

[0019] By adopting the above technical solution and providing a dust blocking mechanism, it is possible to reduce the amount of dust that enters the installation groove from the ventilation pipe.

[0020] Optionally, the dust blocking mechanism includes two clearance grooves respectively opened on both sides of the ventilation duct, two third rotating shafts respectively rotatably connected to the inner walls of the two clearance grooves, two dust blocking plates respectively fixed to the side walls of the two third rotating shafts and inclined, and two support springs respectively fixed to the bottom of the two dust blocking plates; one end of each support spring away from the dust blocking plate is fixed to the inner wall of the ventilation duct.

[0021] By adopting the above technical solution, the two dust baffles and the two supporting springs can reduce the dust from entering the installation groove through the ventilation pipe.

[0022] Optionally, the bottoms of the two ash baffles are fixedly connected to elastic water retaining blocks, and one end of the elastic water retaining blocks away from the ash baffles is installed on the inner wall of the ventilation pipe, and a transmission assembly for driving two third rotating shafts to rotate is installed at the bottom of the battery pack, and the transmission assembly includes a sink groove opened at the bottom of the battery pack, a through hole opened at the side of the sink groove close to the ventilation pipe, a rack slidably connected to the through hole, a driving plate fixed to the side of the rack away from the ventilation pipe and slidably connected to the inner wall of the sink groove, a bearing part fixedly connected to the bottom of the driving plate, and a return spring fixedly connected to the side of the driving plate close to the ventilation pipe; one end of the through hole away from the sink groove passes through one side wall of the ventilation pipe, and one end of the return spring away from the driving plate is fixedly connected to the side wall of the sink groove close to the ventilation pipe; a fourth rotating shaft is rotatably connected in the ventilation pipe, and a spur gear is fixedly connected to the top of the fourth rotating shaft. The gear train is meshed with the rack; a seventh bevel gear is fixedly connected to the bottom of the fourth rotating shaft, and the inner wall of the ventilation pipe is rotatably connected to the fifth rotating shaft, and the side wall of the fifth rotating shaft is fixedly connected to the eighth bevel gear, and the seventh bevel gear meshes with the eighth bevel gear; two ends of the fifth rotating shaft are respectively fixedly connected to a ninth bevel gear, and the side walls of the two third rotating shafts are respectively fixedly connected to the tenth bevel gear, and the two ninth bevel gears are respectively meshed with the two tenth bevel gears, and the two ninth bevel gears and the two tenth bevel gears drive the two ash baffles to rotate in opposite directions; a horizontal groove is provided on the top wall of the sink groove, and the top of the driving plate is slidably connected to the horizontal groove, and an electric push rod is installed in the horizontal groove, and the driving plate is slidably connected to the piston rod of the electric push rod, and the piston rod of the electric push rod is fixedly connected to a push plate, and the push plate can abut against the side of the driving plate close to the ventilation pipe.

[0023] When there is water underneath the electric vehicle while it is driving, the bearing part drives the driving plate to move under the thrust of the water, and the movement of the driving plate drives the rack to move, and the movement of the rack drives the spur gear to rotate, and the rotation of the spur gear drives the fourth rotating shaft to rotate, and the rotation of the fourth rotating shaft drives the seventh bevel gear to rotate, and the rotation of the seventh bevel gear drives the eighth bevel gear to rotate, and the rotation of the eighth bevel gear drives the fifth rotating shaft to rotate, and the rotation of the fifth rotating shaft drives the two ninth bevel gears to rotate, and the rotation of the two ninth bevel gears drives the two tenth bevel gears to rotate, and the rotation of the two tenth bevel gears drives the two third rotating shafts to rotate, and the rotation of the two third rotating shafts drives the two dust baffles to rotate, so that the bottom of the ventilation pipe can be blocked, thereby reducing the entry of water into the installation groove; in summary, by adopting the above technical scheme, the entry of water into the installation groove can be reduced.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the battery pack needs to be cooled, the driving motor is started first. At this time, the output shaft of the driving motor drives the cooling shaft to rotate, and the rotation of the cooling shaft drives the cooling fan blades to rotate. At this time, under the action of the ventilation pipe, the cooling fan blades rotate to cool the battery pack; in addition, when the cooling shaft rotates, the driving component drives the reciprocating screw to rotate under the action of the cooling shaft, and the reciprocating screw rotation drives the moving frame to move back and forth, and the reciprocating movement of the moving frame drives the mounting plate to move back and forth, and the reciprocating movement of the mounting plate drives the cleaning handle to move back and forth, and the reciprocating movement of the cleaning handle drives the brush to move back and forth, and the reciprocating movement of the brush can clean the bottom of the battery pack, thereby further cooling the battery pack; in summary, the cooling mechanism and cleaning mechanism provided can improve the heat dissipation effect of the battery pack of new energy vehicles; 2. When it is necessary to block multiple ventilation pipes, the electromagnet is started first, and the electromagnet drives the blocking plate to move in a direction close to the electromagnet so that the electromagnet and the blocking plate are attracted. At this time, multiple through holes on the blocking plate are misaligned with multiple ventilation pipes, so that multiple ventilation pipes can be blocked; in addition, the blocking plate moves in a direction close to the electromagnet to drive the sliding sleeve to move, and the sliding sleeve moves to press against multiple blocking springs; when the electric car is started, the electromagnet is turned off first, and the sliding sleeve is reset under the action of multiple blocking springs. At this time, multiple through holes are connected with multiple ventilation pipes, which is convenient for cooling the battery pack; in summary, the provided blocking mechanism is convenient for blocking the tops of multiple ventilation pipes, thereby reducing the possibility of water entering the installation groove; 3. When there is water underneath the electric vehicle while it is driving, the bearing part drives the driving plate to move under the thrust of the water, and the movement of the driving plate drives the rack to move, and the movement of the rack drives the spur gear to rotate, and the rotation of the spur gear drives the fourth rotating shaft to rotate, and the rotation of the fourth rotating shaft drives the seventh bevel gear to rotate, and the rotation of the seventh bevel gear drives the eighth bevel gear to rotate, and the rotation of the eighth bevel gear drives the fifth rotating shaft to rotate, and the rotation of the fifth rotating shaft drives the two ninth bevel gears to rotate, and the rotation of the two ninth bevel gears drives the two tenth bevel gears to rotate, and the rotation of the two tenth bevel gears drives the two third rotating shafts to rotate, and the rotation of the two third rotating shafts drives the two dust baffles to rotate, so that the bottom of the ventilation pipe can be blocked, thereby reducing the entry of water into the installation groove; in summary, by adopting the above technical scheme, the entry of water into the installation groove can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a structural schematic diagram highlighting the cleaning mechanism in the embodiment of the present application.

[0027] Figure 3 It is a structural schematic diagram highlighting the buffer mechanism in the embodiment of the present application.

[0028] Figure 4 It is a structural schematic diagram highlighting the blocking mechanism in the embodiment of the present application.

[0029] Figure 5 It is a structural schematic diagram highlighting the dust blocking mechanism in the embodiment of the present application.

[0030] Figure numerals: 1, automobile chassis; 11, mounting groove; 2, battery pack; 21, battery pack; 3, cooling mechanism; 31, driving motor; 32, cooling shaft; 33, cooling fan blade; 34, ventilation pipe; 35, inclined pipe; 4, cleaning mechanism; 41, vertical groove; 42, slide groove; 43, reciprocating screw; 44, guide rod; 45, moving frame; 46, mounting plate; 47, cleaning handle; 48, brush; 5, driving assembly; 51, first rotating shaft; 52, first bevel gear; 53, second bevel gear; 54, third bevel gear; 55, second rotating shaft; 56, fourth bevel gear; 57, fifth bevel gear; 58, sixth bevel gear; 6, buffer mechanism; 61, receiving groove; 62, buffer plate; 63, buffer Spring; 7, blocking mechanism; 71, horizontal rod; 711, limit ring; 72, sliding sleeve; 73, blocking spring; 74, blocking plate; 741, through hole; 75, electromagnet; 8, dust blocking mechanism; 81, give way groove; 82, third rotating shaft; 83, dust blocking plate; 84, supporting spring; 85, elastic water retaining block; 9, transmission assembly; 91, sinking groove; 911, perforation; 912, horizontal groove; 92, rack; 93, driving plate; 931, bearing part; 94, reset spring; 95, fourth rotating shaft; 951, spur gear; 952, seventh bevel gear; 96, fifth rotating shaft; 961, eighth bevel gear; 962, ninth bevel gear; 97, tenth bevel gear; 98, electric push rod; 99, push plate. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0032] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0033] The present application embodiment discloses a bottom heat dissipation device for a new energy vehicle battery, referring to Figure 1 , including a vehicle chassis 1, a mounting groove 11 opened at the bottom of the vehicle chassis 1, and a battery pack 2 bolted to the bottom of the mounting groove 11 by multiple countersunk bolts, a battery pack 21 is installed in the battery pack 2, and a cooling mechanism 3 is installed in the mounting groove 11.

[0034] Reference Figure 1The cooling mechanism 3 includes a driving motor 31 vertically mounted on the top wall of the mounting groove 11, a cooling shaft 32 vertically mounted on the output shaft of the driving motor 31, and a plurality of cooling fan blades 33 fixedly connected to the side wall of the cooling shaft 32; a plurality of ventilation pipes 34 are vertically arranged through the battery pack 2; the ventilation pipes 34 are square in shape, and cleaning mechanisms 4 for cleaning the bottom of the battery pack 2 are respectively installed on both sides of the mounting groove 11.

[0035] Reference Figure 1 and Figure 2 Each cleaning mechanism 4 includes a vertical slot 41 provided on one side of the mounting slot 11, a slide slot 42 provided at the bottom of the vertical slot 41, a reciprocating screw 43 horizontally rotatably connected to the inner wall of the slide slot 42 through a bearing, a guide rod 44 horizontally fixed to the inner wall of the slide slot 42, and a driving assembly 5 installed on the inner wall of the vertical slot 41 for driving the reciprocating screw 43 to rotate; a moving frame 45 is threadedly connected to the reciprocating screw 43, the guide rod 44 is arranged to pass through one end of the moving frame 45, and the moving frame 45 is slidably connected to the guide rod 44 in the horizontal direction; a mounting plate 46 is installed at one end of the moving frame 45 close to the battery pack 2, a cleaning handle 47 is installed on the top of the mounting plate 46, a brush 48 is installed on the top of the cleaning handle 47, and the brush 48 can abut against the bottom of the battery pack 2. When the battery pack 21 needs to be cooled, the drive motor 31 is started first. At this time, the output shaft of the drive motor 31 drives the cooling shaft 32 to rotate, and the cooling shaft 32 rotates to drive the cooling blades 33 to rotate. At this time, under the action of the ventilation pipe 34, the cooling blades 33 rotate to cool the battery pack 21; in addition, when the cooling shaft 32 rotates, the drive component 5 drives the reciprocating screw 43 to rotate under the action of the cooling shaft 32, and the reciprocating screw 43 rotates to drive the moving frame 45 to move back and forth, and the moving frame 45 reciprocates to drive the mounting plate 46 to move back and forth, and the mounting plate 46 reciprocates to drive the cleaning handle 47 to move back and forth, and the cleaning handle 47 reciprocates to drive the brush 48 to move back and forth, and the reciprocating movement of the brush 48 can clean the bottom of the battery pack 2, so as to further cool the battery pack 21; in summary, the cooling mechanism 3 and the cleaning mechanism 4 set can improve the heat dissipation effect of the battery pack 21 of the new energy vehicle.

[0036] Reference Figure 1 and Figure 2The driving assembly 5 includes a first rotating shaft 51 horizontally rotatably connected to the inner wall of the vertical groove 41 near the mounting groove 11 through a bearing, a first bevel gear 52 fixedly connected to the side wall of the cooling shaft 32, a second bevel gear 53 installed on one end of the first rotating shaft 51 near the cooling shaft 32, a third bevel gear 54 installed on the other end of the first rotating shaft 51, a second rotating shaft 55 vertically rotatably connected to the inner wall of the vertical groove 41 through a bearing, a fourth bevel gear 56 installed on the second rotating shaft 55 near one end of the first rotating shaft 51, a fifth bevel gear 57 fixedly connected to the other end of the second rotating shaft 55, and a sixth bevel gear 58 fixedly connected to the side wall of the reciprocating screw 43; the two ends of the first rotating shaft 51 are respectively located in the vertical groove 41 and the mounting groove 11, the first bevel gear 52 is meshed with the second bevel gear 53, the third bevel gear 54 is meshed with the fourth bevel gear 56, and the fifth bevel gear 57 is meshed with the sixth bevel gear 58. The rotation of the cooling shaft 32 drives the first bevel gear 52 to rotate, the first bevel gear 52 rotates to drive the second bevel gear 53 to rotate, the second bevel gear 53 rotates to drive the first rotating shaft 51 to rotate, the first rotating shaft 51 rotates to drive the third bevel gear 54 to rotate, the third bevel gear 54 rotates to drive the fourth bevel gear 56 to rotate, the fourth bevel gear 56 rotates to drive the second rotating shaft 55 to rotate, the second rotating shaft 55 rotates to drive the fifth bevel gear 57 to rotate, the fifth bevel gear 57 rotates to drive the sixth bevel gear 58 to rotate, and the sixth bevel gear 58 rotates to drive the reciprocating screw 43 to rotate; in summary, the set drive assembly 5 is convenient for driving the reciprocating screw 43 to rotate.

[0037] Reference Figure 2 and Figure 3 A buffer mechanism 6 for buffering the cleaning handle 47 is installed in the mounting plate 46; the buffer mechanism 6 is arranged so that when the cleaning handle 47 touches a foreign object, it can move downward, thereby protecting the cleaning handle 47.

[0038] Reference Figure 2 and Figure 3 The buffer mechanism 6 includes a receiving groove 61 opened at the top of the mounting plate 46, a buffer plate 62 fixed to the bottom of the cleaning handle 47 and connected to the receiving groove 61 along the vertical sliding direction, and a plurality of buffer springs 63 vertically fixed to the bottom of the buffer plate 62; one end of each buffer spring 63 away from the buffer plate 62 is fixed to the bottom of the receiving groove 61. The buffer plate 62 and the plurality of buffer springs 63 are provided to facilitate buffering the cleaning handle 47, thereby facilitating protection of the cleaning handle 47.

[0039] Reference Figure 1 The vertical slot 41 is connected to the mounting slot 11 through an inclined tube 35. The wind fanned by the cooling blade 33 can be blown toward the brush 48 through the inclined tube 35 and the vertical slot 41, so as to facilitate cleaning the dust on the brush 48.

[0040] Reference Figure 1and Figure 4 A blocking mechanism 7 for blocking the tops of the plurality of ventilation pipes 34 is installed in the installation groove 11. The blocking mechanism 7 is provided to block the tops of the plurality of ventilation pipes 34 when the electric vehicle needs to stop, thereby reducing the possibility of water entering the installation groove 11.

[0041] Reference Figure 1 and Figure 4 The sealing mechanism 7 includes a horizontal rod 71 horizontally fixed to the inner wall of the mounting groove 11, a sleeve 72 slidingly connected to the horizontal rod 71 along the horizontal direction, a plurality of sealing springs 73 horizontally fixed to the side of the sleeve 72 away from the cooling shaft 32, a sealing plate 74 fixed to the bottom of the sleeve 72, and an electromagnet 75 installed on one side of the mounting groove 11; one end of the horizontal rod 71 is threadedly connected to a limiting ring 711, one end of each sealing spring 73 away from the sleeve 72 is fixed to the inner wall of the mounting groove 11, and a plurality of through holes 741 are opened on the sealing plate 74, and the plurality of through holes 741 are arranged one by one corresponding to the plurality of ventilation pipes 34; the sealing plate 74 can be magnetically connected to the electromagnet 75. When it is necessary to block multiple ventilation pipes 34, the electromagnet 75 is started first. At this time, the electromagnet 75 drives the blocking plate 74 to move in a direction close to the electromagnet 75 so that the electromagnet 75 and the blocking plate 74 are attracted. At this time, the multiple through holes 741 on the blocking plate 74 are misaligned with the multiple ventilation pipes 34, so that the multiple ventilation pipes 34 can be blocked; in addition, the blocking plate 74 moves in a direction close to the electromagnet 75 to drive the sliding sleeve 72 to move, and the sliding sleeve 72 moves to press the multiple blocking springs 73; when the electric car is started, the electromagnet 75 is turned off first. At this time, the sliding sleeve 72 is reset under the action of the multiple blocking springs 73, and the multiple through holes 741 are connected with the multiple ventilation pipes 34, which is convenient for cooling the battery pack 21; in summary, the provided blocking mechanism 7 is convenient for blocking the tops of the multiple ventilation pipes 34, thereby reducing the possibility of water entering the mounting groove 11.

[0042] Reference Figure 1 and Figure 5 , a dust blocking mechanism 8 is installed at the bottom of each ventilation pipe 34; the dust blocking mechanism 8 can reduce dust from entering the installation slot 11 from the ventilation pipe 34. The dust blocking mechanism 8 includes two clearance grooves 81 respectively opened on both sides of the ventilation pipe 34, two third rotating shafts 82 respectively connected to the inner walls of the two clearance grooves 81 through bearings for horizontal rotation, two dust blocking plates 83 respectively fixed to the side walls of the two third rotating shafts 82, and two supporting springs 84 respectively fixed to the bottom of the two dust blocking plates 83 in an inclined manner; in the initial state, the dust blocking plates 83 are in an inclined state, and one end of each supporting spring 84 away from the dust blocking plates 83 is fixed to the inner wall of the ventilation pipe 34. The two dust blocking plates 83 and the two supporting springs 84 can reduce dust from entering the installation slot 11 from the ventilation pipe 34.

[0043] Reference Figure 5The bottom of the two ash baffles 83 are fixedly connected with elastic water retaining blocks 85, and one end of the elastic water retaining blocks 85 away from the ash baffles 83 is installed on the inner wall of the ventilation pipe 34. The bottom of the battery pack 2 is installed with a transmission assembly 9 for driving the two third rotating shafts 82 to rotate. The transmission assembly 9 includes a sink 91 opened at the bottom of the battery pack 2, a through hole 911 horizontally opened on the side of the sink 91 close to the ventilation pipe 34, a rack 92 slidingly connected to the through hole 911 in the horizontal direction, and a fixed rack 92 away from the side of the ventilation pipe 34 and slidingly connected in the horizontal direction. A driving plate 93 connected to the inner wall of the sink 91, a bearing portion 931 fixed to the bottom of the driving plate 93, and a return spring 94 fixed horizontally to the driving plate 93 near the ventilation pipe 34; the end of the through hole 911 away from the sink 91 passes through the side wall of the ventilation pipe 34, and the end of the return spring 94 away from the driving plate 93 is fixed to the side wall of the sink 91 near the ventilation pipe 34; a fourth rotating shaft 95 is vertically rotatably connected to the ventilation pipe 34 through a bearing, and a spur gear 951 is fixed to the top of the fourth rotating shaft 95, and the spur gear 951 is connected to the rack 92 meshes with each other; a seventh bevel gear 952 is fixedly connected to the bottom of the fourth rotating shaft 95, and the inner wall of the ventilation pipe 34 is horizontally rotatably connected to the fifth rotating shaft 96 through a bearing, and an eighth bevel gear 961 is fixedly connected to the side wall of the fifth rotating shaft 96, and the seventh bevel gear 952 meshes with the eighth bevel gear 961; both ends of the fifth rotating shaft 96 are respectively fixedly connected to ninth bevel gears 962, and the side walls of the two third rotating shafts 82 are respectively fixedly connected to tenth bevel gears 97, and the two ninth bevel gears 962 are respectively meshed with the two tenth bevel gears 97, and the two ninth bevel gears 9 62 and the two tenth bevel gears 97 drive the two ash baffles 83 to rotate in opposite directions; a horizontal groove 912 is provided on the top wall of the sink 91, and the top of the driving plate 93 is slidably connected to the horizontal groove 912 in the horizontal direction, and an electric push rod 98 is horizontally installed in the horizontal groove 912, and the piston rod of the electric push rod 98 penetrates the driving plate 93, and the driving plate 93 is slidably connected to the piston rod of the electric push rod 98 in the horizontal direction, and the piston rod of the electric push rod 98 is fixedly connected with a push plate 99, and the push plate 99 can abut against the side of the driving plate 93 close to the ventilation pipe 34.When there is water underneath the electric vehicle during driving, the bearing portion 931 drives the driving plate 93 to move under the thrust of the water, and the driving plate 93 moves to drive the rack 92 to move, and the rack 92 moves to drive the spur gear 951 to rotate, and the spur gear 951 rotates to drive the fourth rotating shaft 95 to rotate, and the fourth rotating shaft 95 rotates to drive the seventh bevel gear 952 to rotate, and the seventh bevel gear 952 rotates to drive the eighth bevel gear 961 to rotate, and the eighth bevel gear 961 rotates to drive the fifth rotating shaft 96 to rotate, and the fifth rotating shaft 96 rotates to drive the two ninth bevel gears 962 to rotate, and the two ninth bevel gears 962 rotate to drive the two tenth bevel gears 97 to rotate, and the two tenth bevel gears 97 rotate to drive the two third rotating shafts 82 to rotate, and the two third rotating shafts 82 rotate to drive the two ash baffles 83 to rotate, so that the bottom of the ventilation pipe 34 can be blocked, thereby reducing the water from entering the mounting groove 11; in summary, by adopting the above technical solution, the water from entering the mounting groove 11 can be reduced.

[0044] Working principle: when the battery pack 21 needs to be cooled, the drive motor 31 is started first. At this time, the output shaft of the drive motor 31 drives the cooling shaft 32 to rotate, and the cooling shaft 32 rotates to drive the cooling blades 33 to rotate. At this time, under the action of the ventilation pipe 34, the cooling blades 33 rotate to cool the battery pack 21; in addition, the cooling shaft 32 rotates to drive the first bevel gear 52 to rotate, the first bevel gear 52 rotates to drive the second bevel gear 53 to rotate, the second bevel gear 53 rotates to drive the first rotating shaft 51 to rotate, the first rotating shaft 51 rotates to drive the third bevel gear 54 to rotate, the third bevel gear 54 rotates to drive the fourth bevel gear 56 to rotate, and the fourth bevel gear 56 rotates to drive the second rotating shaft 55 to rotate The second rotating shaft 55 rotates to drive the fifth bevel gear 57 to rotate, the fifth bevel gear 57 rotates to drive the sixth bevel gear 58 to rotate, the sixth bevel gear 58 rotates to drive the reciprocating screw 43 to rotate, the reciprocating screw 43 rotates to drive the movable frame 45 to reciprocate, the movable frame 45 reciprocates to drive the mounting plate 46 to reciprocate, the mounting plate 46 reciprocates to drive the cleaning handle 47 to reciprocate, the cleaning handle 47 reciprocates to drive the brush 48 to reciprocate, the reciprocating movement of the brush 48 can clean the bottom of the battery pack 2, thereby further cooling the battery pack 21; in summary, the cooling mechanism 3 and the cleaning mechanism 4 are set to improve the heat dissipation effect of the battery pack 21 of the new energy vehicle.

[0045] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A bottom heat dissipation device for a new energy vehicle battery, comprising a vehicle chassis (1), a mounting groove (11) provided at the bottom of the vehicle chassis (1), and a battery pack (2) bolted to the bottom of the mounting groove (11), wherein a battery pack (21) is installed in the battery pack (2). It is characterized in that A cooling mechanism (3) is installed in the installation groove (11), and the cooling mechanism (3) comprises a driving motor (31) installed on the top wall of the installation groove (11), a cooling shaft (32) installed on the output shaft of the driving motor (31), and a plurality of cooling fan blades (33) fixedly connected to the side wall of the cooling shaft (32); a plurality of ventilation pipes (34) are provided through the battery pack (2); Cleaning mechanisms (4) for cleaning the bottom of the battery pack (2) are respectively installed on both sides of the installation groove (11), and each group of the cleaning mechanisms (4) comprises a vertical groove (41) opened on one side of the installation groove (11), a slide groove (42) opened at the bottom of the vertical groove (41), a reciprocating screw (43) rotatably connected to the inner wall of the slide groove (42), a guide rod (44) fixed to the inner wall of the slide groove (42), and a guide rod (45) installed on the inner wall of the vertical groove (41) for driving the reciprocating screw (43). 43) a driving assembly (5) for rotating; a movable frame (45) is threadedly connected to the reciprocating screw (43), and the movable frame (45) is slidably connected to the guide rod (44); a mounting plate (46) is installed at one end of the movable frame (45) close to the battery pack (2), a cleaning handle (47) is installed on the top of the mounting plate (46), and a brush (48) is installed on the top of the cleaning handle (47), and the brush (48) can abut against the bottom of the battery pack (2); A dust blocking mechanism (8) is installed at the bottom of each ventilation pipe (34); the dust blocking mechanism (8) comprises two clearance grooves (81) respectively opened on both sides of the ventilation pipe (34), two third rotating shafts (82) respectively rotatably connected to the inner walls of the two clearance grooves (81), two dust blocking plates (83) respectively fixed to the side walls of the two third rotating shafts (82) and arranged obliquely, and two supporting springs (84) respectively fixed to the bottom of the two dust blocking plates (83); one end of each supporting spring (84) away from the dust blocking plate (83) is fixed to the inner wall of the ventilation pipe (34); the bottoms of the two dust blocking plates (83) are fixedly connected to elastic water blocking blocks (85 ), one end of the elastic water retaining block (85) away from the dust retaining plate (83) is mounted on the inner wall of the ventilation pipe (34), and a transmission assembly (9) for driving the two third rotating shafts (82) to rotate is mounted on the bottom of the battery pack (2), and the transmission assembly (9) comprises a sink (91) provided at the bottom of the battery pack (2), a through hole (911) provided at a side of the sink (91) close to the ventilation pipe (34), a rack (92) slidably connected to the through hole (911), a driving plate (93) fixedly connected to the side of the rack (92) away from the ventilation pipe (34) and slidably connected to the inner wall of the sink (91), and a bearing portion fixedly connected to the bottom of the driving plate (93). (931) and a return spring (94) fixed to a side of the driving plate (93) close to the ventilation pipe (34); the end of the through hole (911) away from the sink (91) passes through a side wall of the ventilation pipe (34), and the end of the return spring (94) away from the driving plate (93) is fixed to a side wall of the sink (91) close to the ventilation pipe (34); a fourth rotating shaft (95) is rotatably connected in the ventilation pipe (34), a spur gear (951) is fixed to the top of the fourth rotating shaft (95), and the spur gear (951) is meshed with the rack (92); a seventh bevel gear (952) is fixed to the bottom of the fourth rotating shaft (95), The inner wall of the ventilation pipe (34) is rotatably connected to a fifth rotating shaft (96), the side wall of the fifth rotating shaft (96) is fixedly connected to an eighth bevel gear (961), and the seventh bevel gear (952) is meshed with the eighth bevel gear (961); both ends of the fifth rotating shaft (96) are respectively fixedly connected to a ninth bevel gear (962), the side walls of the two third rotating shafts (82) are respectively fixedly connected to a tenth bevel gear (97), the two ninth bevel gears (962) are respectively meshed with the two tenth bevel gears (97), and the two ninth bevel gears (962) and the two tenth bevel gears (97) drive the two dust baffles (83) to rotate in opposite directions;The top wall of the sink (91) is provided with a horizontal groove (912), the top of the driving plate (93) is slidably connected to the horizontal groove (912), an electric push rod (98) is installed in the horizontal groove (912), the driving plate (93) is slidably connected to the piston rod of the electric push rod (98), the piston rod of the electric push rod (98) is fixedly connected with a push plate (99), and the push plate (99) can abut against a side of the driving plate (93) close to the ventilation pipe (34).

2. A bottom heat dissipation device for a new energy vehicle battery according to claim 1, It is characterized in that The driving assembly (5) comprises a first rotating shaft (51) rotatably connected to the inner wall of the vertical groove (41) close to the mounting groove (11), a first bevel gear (52) fixedly connected to the side wall of the cooling shaft (32), a second bevel gear (53) installed on one end of the first rotating shaft (51) close to the cooling shaft (32), a third bevel gear (54) installed on the other end of the first rotating shaft (51), a second rotating shaft (55) rotatably connected to the inner wall of the vertical groove (41), and a first bevel gear (52) fixedly connected to the side wall of the cooling shaft (32). The first rotating shaft (51) comprises a fourth bevel gear (56) at one end, a fifth bevel gear (57) fixedly connected to the other end of the second rotating shaft (55), and a sixth bevel gear (58) fixedly connected to the side wall of the reciprocating screw (43); the two ends of the first rotating shaft (51) are respectively located in the vertical groove (41) and the mounting groove (11), the first bevel gear (52) is meshed with the second bevel gear (53), the third bevel gear (54) is meshed with the fourth bevel gear (56), and the fifth bevel gear (57) is meshed with the sixth bevel gear (58).

3. A bottom heat dissipation device for a new energy vehicle battery according to claim 1, It is characterized in that A buffer mechanism (6) for buffering the cleaning handle (47) is installed in the mounting plate (46).

4. A bottom heat dissipation device for a new energy vehicle battery according to claim 3, It is characterized in that The buffer mechanism (6) comprises a receiving groove (61) opened at the top of the mounting plate (46), a buffer plate (62) fixed to the bottom of the cleaning handle (47) and slidably connected to the receiving groove (61), and a plurality of buffer springs (63) fixed to the bottom of the buffer plate (62); one end of each buffer spring (63) away from the buffer plate (62) is fixed to the bottom of the receiving groove (61).

5. A bottom heat dissipation device for a new energy vehicle battery according to claim 4, It is characterized in that The vertical groove (41) is connected to the mounting groove (11) via an inclined pipe (35).

6. A bottom heat dissipation device for a new energy vehicle battery according to claim 1, It is characterized in that A blocking mechanism (7) for blocking the tops of a plurality of ventilation pipes (34) is installed in the installation groove (11).

7. A bottom heat dissipation device for a new energy vehicle battery according to claim 6, It is characterized in that The blocking mechanism (7) comprises a horizontal rod (71) fixedly connected to the inner wall of the mounting groove (11), a sliding sleeve (72) slidably connected to the horizontal rod (71), a plurality of blocking springs (73) fixedly connected to the side of the sliding sleeve (72) away from the cooling shaft (32), a blocking plate (74) fixedly connected to the bottom of the sliding sleeve (72), and an electromagnet (75) installed on one side of the mounting groove (11); one end of each of the blocking springs (73) away from the sliding sleeve (72) is fixedly connected to the inner wall of the mounting groove (11), and the blocking plate (74) is provided with a plurality of through holes (741), and the plurality of through holes (741) are arranged one-to-one corresponding to the plurality of ventilation pipes (34); the blocking plate (74) can be magnetically connected to the electromagnet (75).

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