A lithium battery with adjustable cooling method

Abstract

The present invention discloses a lithium battery with adjustable cooling mode, belonging to the field of lithium batteries. A lithium battery with adjustable cooling mode comprises a battery box and a plurality of adjustment mechanisms arranged in the battery box; the side wall of the battery box is provided with a through hole at a position corresponding to each adjustment mechanism. The adjustment mechanism comprises a rotating seat rotatably connected to the side wall of the battery box, and blades uniformly installed on the rotating seat along the circumferential direction; the rotating shaft of the rotating seat is perpendicular to the side wall of the battery box; the blades are axially movable and installed in the rotating seat; in a first state, the blades are parallel to and against the side wall of the battery box, at which time the rotating seat rotates, and the blades control the opening and closing of the through hole; in a second state, an angle is generated between the blades and the side wall of the battery box, at which time the rotating seat rotates, and the blades generate an axial airflow. The change of the blades is utilized to improve the cooling efficiency of the battery box.

Description

Technical Field

[0001] The invention belongs to the field of lithium batteries, and more specifically, relates to a lithium battery with an adjustable cooling method. Background Art

[0002] Lithium batteries generate heat when working. In order to prevent the internal temperature of lithium batteries from being too high, it is usually necessary to cool the inside of lithium batteries through external air. Different forms of cooling measures are required according to the different heating conditions of lithium batteries. However, the cooling measures of existing products are single, and only rely on wind power to cool lithium batteries. At the same time, external debris will usually enter the lithium battery through the air vents, which can easily cause short circuits. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a lithium battery with an adjustable cooling method, which can provide different forms of cooling measures and can be selected independently according to the heating situation.

[0004] The invention discloses a lithium battery with adjustable cooling mode, comprising a battery box and a plurality of regulating mechanisms arranged in the battery box; the side wall of the battery box is provided with openings corresponding to the positions of the respective regulating mechanisms.

[0005] The regulating mechanism comprises a rotating seat rotatably connected to the side wall of the battery box and blades uniformly installed on the rotating seat along the circumferential direction; the rotating axis of the rotating seat is perpendicular to the side wall of the battery box; the blades are movably installed in the rotating seat along the axial direction of the rotating seat; in a first state, the blades are parallel to and against the side wall of the battery box, at which time the rotating seat rotates, and the blades control the opening and closing of the passage; in a second state, an angle is generated between the blades and the side wall of the battery box, at which time the rotating seat rotates, and the blades generate axial airflow.

[0006] As a further improvement of the present invention, the side wall of the rotating seat is provided with a slide groove slidably connected to the blade; a rack distributed along the axial direction of the rotating seat is provided in the slide groove; and a gear meshing with the rack is coaxially provided on the blade.

[0007] As a further improvement of the present invention, the adjustment mechanism also includes a push plate connected to the rotating seat along the axial direction of the rotating seat for pushing the blade to move; a driving mechanism for driving each adjustment mechanism to move is installed in the battery box.

[0008] As a further improvement of the present invention, the driving mechanism includes a synchronous frame slidably connected in the battery box to drive each push plate to move, a screw rotatably connected in the battery box, and a motor driving the screw to rotate; the screw and each rotating seat are connected by a synchronous belt transmission.

[0009] As a further improvement of the present invention, the side wall of the push plate is provided with a synchronization groove along the circumferential direction for engaging with the synchronization frame; the adjustment mechanism also includes a spring installed between the blade and the side wall of the battery box.

[0010] As a further improvement of the present invention, a pin capable of plugging into a thread groove in the screw rod is slidably connected in the synchronous frame along the radial direction of the screw rod.

[0011] As a further improvement of the present invention, the driving mechanism further comprises a driving shell fixed in the battery box, and a driving piston sealingly and slidably connected in the driving shell; the latch slides synchronously with the driving piston.

[0012] As a further improvement of the present invention, an electric push rod and a pump housing are fixedly connected in the battery box; a push rod piston sealingly sliding in the pump housing is fixedly connected to the output shaft of the electric push rod; and the pump housing is connected to each drive housing.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: this solution controls the opening and closing of the passage by moving the blades so that when the blades are in the first state, the blades are sealed against the side walls of the battery box, and the opening is controlled. When the blades do not close the passage, the outside air enters the battery box to cool the internal lithium battery cells. When the blades close the passage, the outside debris is isolated from entering the battery box to avoid short circuits. When the blades are in the second state, the rotation of the rotating seat causes the blades to generate axial airflow, which speeds up the heat exchange between the battery box and the outside world and improves the cooling efficiency inside the battery box. The two states can be selected independently according to the temperature conditions in the battery box to cope with different usage scenarios and improve the versatility of lithium batteries.

[0014] Furthermore, when the heat of the lithium battery is low, the blades close the opening, and the heat inside the lithium battery is dissipated to the outside through the side wall of the battery box. When the heat of the lithium battery is normal, the blades no longer close the opening, and the heat can be freely discharged to the outside through the opening. When the heat of the lithium battery is high, the blades pass through the second state, generating axial airflow to accelerate the cooling of the lithium battery.

[0015] In this solution, the screw can drive each rotating seat to rotate, thereby driving the blade to rotate circumferentially, and can also drive the push plate to move through the synchronous frame, so that the blade switches between the first state and the second state.

[0016] This solution drives all the latches to move by changing the air pressure, so that the transmission relationship between the latches and the screw rods changes. The structure is stable and does not require multiple power units to drive the movement of each latch individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the decomposition structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the regulating mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the exploded structure of the driving mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the driving mechanism of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the electric push rod of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the blade of the present invention when it is in a first state;

[0024] Figure 8 It is a schematic diagram of the structure of the blade of the present invention when it is in the second state.

[0025] Description of the numbers in the figure:

[0026] 1. Battery box; 11. Through port; 12. Charging seat; 13. External module; 14. Cover; 2. Adjustment mechanism; 21. Rotating seat; 211. Slide groove; 212. Rack; 22. Push plate; 221. Synchronous groove; 23. Blade; 231. Gear; 24. Spring; 3. Driving mechanism; 31. Synchronous frame; 32. Screw; 33. Motor; 34. Latch; 35. Driving shell; 36. Driving piston; 361. Track; 37. Synchronous belt; 4. Electric push rod; 41. Push rod piston; 42. Pump shell. DETAILED DESCRIPTION

[0027] Specific embodiment 1: Please refer to Figure 1-Figure 8 A lithium battery with adjustable cooling method, comprising a battery box 1, and a plurality of adjustment mechanisms 2 arranged in the battery box 1; a lithium battery unit is installed in the battery box 1; a charging seat 12 for charging the lithium battery unit and an external module 13 for controlling the charging and discharging of the lithium battery are arranged on the side wall of the battery box 1; a cover 14 is detachably connected to the upper end of the battery box 1; and openings 11 are arranged on the side wall of the battery box 1 corresponding to the positions of the adjustment mechanisms 2.

[0028] The regulating mechanism 2 comprises a rotating seat 21 rotatably connected to the side wall of the battery box 1, and blades 23 uniformly installed on the rotating seat 21 along the circumferential direction; the rotating axis of the rotating seat 21 is perpendicular to the side wall of the battery box 1; the blades 23 are movably installed in the rotating seat 21 along the axial direction of the rotating seat 21; in a first state, the blades 23 are parallel to and against the side wall of the battery box 1, at which time the rotating seat 21 rotates, and the blades 23 control the opening and closing of the opening 11; in a second state, an angle is generated between the blades 23 and the side wall of the battery box 1, at which time the rotating seat 21 rotates, and the blades 23 generate axial airflow.

[0029] The side wall of the rotating seat 21 is provided with a slide groove 211 slidably connected to the blade 23 ; a rack 212 distributed along the axial direction of the rotating seat 21 is provided in the slide groove 211 ; and a gear 231 meshing with the rack 212 is coaxially provided on the blade 23 .

[0030] The adjusting mechanism 2 also includes a push plate 22 slidably connected to the rotating seat 21 along the axial direction of the rotating seat 21 for pushing the blade 23 to move; a driving mechanism 3 for driving each adjusting mechanism 2 to move is installed in the battery box 1.

[0031] The driving mechanism 3 includes a synchronous frame 31 slidably connected in the battery box 1 to drive each push plate 22 to move, a screw rod 32 rotatably connected in the battery box 1, and a motor 33 driving the screw rod 32 to rotate; the screw rod 32 and each rotating seat 21 are connected to each other through a synchronous belt 37.

[0032] The side wall of the push plate 22 is circumferentially provided with a synchronization groove 221 that is engaged with the synchronization frame 31, so that the push plate 22 moves axially synchronously relative to the synchronization frame 31 and rotates circumferentially relatively; the adjustment mechanism 2 also includes a spring 24 installed between the blade 23 and the side wall of the battery box 1; the spring 24 ensures that the blade 23 is always pressed against the push plate 22.

[0033] A latch pin 34 is slidably connected in the synchronous frame 31 along the radial direction of the screw rod 32 and can be plugged into the thread groove in the screw rod 32 .

[0034] The synchronous frame 31 is provided with screw rods 32 on both sides along the length direction of the battery box 1 , respectively. The synchronous frame 31 can move stably through the synchronous movement of the two screw rods 32 .

[0035] The adjustment mechanisms 2 in the battery box 1 are arranged in a matrix form; the battery box 1 has a plurality of driving mechanisms 3; and one driving mechanism 3 cooperates with the adjustment mechanisms 2 located in the same row.

[0036] The driving mechanism 3 further comprises a driving shell 35 fixed in the battery box 1 and a driving piston 36 sealingly and slidably connected in the driving shell 35 ; the latch 34 slides synchronously with the driving piston 36 .

[0037] The driving piston 36 is provided with a track 361 parallel to the sliding direction of the push plate 22 ; the latch 34 is slidably connected in the track 361 .

[0038] The battery box 1 is fixedly connected with an electric push rod 4 and a pump housing 42 ; the output shaft of the electric push rod 4 is fixedly connected with a push rod piston 41 that slides in a sealed manner in the pump housing 42 ; the pump housing 42 is connected to each drive housing 35 .

[0039] When the push rod piston 41 moves, the air pressure in the pump housing 42 changes, which in turn causes the air pressure in each drive housing 35 to change synchronously, ultimately driving the piston 36 to move.

[0040] A temperature sensor is installed in the battery box 1 to monitor the temperature change in the battery box 1 in real time.

[0041] In the initial state, each blade 23 is in the first state and closes each through port; the driving piston 36 separates the latch pin 34 from the screw rod 32 .

[0042] When the temperature sensor detects that the temperature inside the battery box 1 has risen, the motor 33 starts to work, driving the screw 32 to rotate a specified angle. The screw 32 drives the corresponding rotating seats 21 to rotate through the synchronous belt 37, so that the rotating seat 21 drives the blade 23 to rotate circumferentially by a certain angle, and then the blade 23 no longer closes the opening 11.

[0043] The outside air will enter the battery box 1 through the openings 11 , and the air in the battery box 1 will enter the outside through the openings 11 to achieve heat exchange and reduce the temperature in the battery box 1 .

[0044] When the temperature sensor detects that the temperature in the battery box 1 is continuously maintained at a high temperature, the electric push rod 4 works, driving the push rod piston 41 to move, and through the change of air pressure, driving each driving piston 36 to move, and the driving piston 36 drives the latch 34 to move synchronously, so that the latch 34 is plugged into the thread groove on the screw rod 32, and then the latch 34 is connected with the screw rod 32 in transmission.

[0045] Then the motor 33 works forward for a set time, the screw 32 drives the synchronous frame 31 to move forward through the latch 34, and the synchronous belt 37 drives each push plate 22 to move synchronously, and the push plate 22 moves away from the opening 11. At the same time, the spring 24 pushes the blade 23 to move, and the blade 23 moves away from the opening 11 along the slide slot 211. At the same time, through the meshing of the gear 231 and the rack 212, the blade 23 rotates during the movement, and then an angle is generated between the blade 23 and the side wall of the battery box 1, and then the blade 23 switches from the first state to the second state.

[0046] Then the electric push rod 4 works in the reverse direction, driving the push rod piston 41 to move in the reverse direction, so that each pin 34 is separated from the screw rod 32. Then the motor 33 works, driving each rotating seat 21 to rotate through the screw rod 32 and the synchronous belt 37, and the rotating seat 21 drives each blade 23 to rotate, so that the rotation of the blade 23 generates an axial airflow. The blades 23 on the side wall of one side of the battery box 1 draw the outside air into the battery box 1 through the opening 11, and the blades 23 on the side wall of the other side of the battery box 1 discharge the air in the battery box 1 to the outside, thereby accelerating the cooling speed in the battery box 1 and improving the efficiency.

[0047] After cooling, the electric push rod 4 drives the push rod piston 41 to move, so that the pin 34 is plugged into the screw 32, and then the motor 33 works in reverse for a set time. The screw 32 drives each synchronization frame 31 and the push plate 22 to move toward the opening 11, and the push plate 22 pushes each blade 23 to move synchronously toward the opening 11. Finally, each blade 23 abuts against the side wall of the battery box 1.

[0048] Then the electric push rod 4 works in the reverse direction, so that the latch 34 is separated from the screw rod 32. Then the motor 33 works, driving each rotating seat 21 to rotate, so that the blade 23 closes the passage 11 again and returns to the initial state.

Claims

1. A lithium battery with adjustable cooling mode, characterized in that: It comprises a battery box (1) and a plurality of adjustment mechanisms (2) arranged in the battery box (1); a through hole (11) is arranged on the side wall of the battery box (1) at a position corresponding to each adjustment mechanism (2); The regulating mechanism (2) comprises a rotating seat (21) rotatably connected to the side wall of the battery box (1), and blades (23) uniformly mounted on the rotating seat (21) along the circumferential direction; the rotating axis of the rotating seat (21) is perpendicular to the side wall of the battery box (1); the blades (23) are movably mounted in the rotating seat (21) along the axial direction of the rotating seat (21); in a first state, the blades (23) are parallel to and abut against the side wall of the battery box (1), at which time the rotating seat (21) rotates, and the blades (23) control the opening and closing of the opening (11); in a second state, an angle is generated between the blades (23) and the side wall of the battery box (1), at which time the rotating seat (21) rotates, and the blades (23) generate an axial airflow; The side wall of the rotating seat (21) is provided with a sliding groove (211) which is slidably connected to the blade (23); a rack (212) is provided in the sliding groove (211) and is distributed along the axial direction of the rotating seat (21); and a gear (231) which meshes with the rack (212) is coaxially provided on the blade (23); The adjusting mechanism (2) further comprises a push plate (22) slidably connected to the rotating seat (21) along the axial direction of the rotating seat (21) and used to push the blade (23) to move; a driving mechanism (3) for driving each adjusting mechanism (2) to move is installed in the battery box (1); The driving mechanism (3) comprises a synchronous frame (31) slidably connected in the battery box (1) and driving each push plate (22) to move, a screw rod (32) rotatably connected in the battery box (1), and a motor (33) driving the screw rod (32) to rotate; the screw rod (32) and each rotating seat (21) are connected to each other through a synchronous belt (37); The side wall of the push plate (22) is provided with a synchronization groove (221) along the circumferential direction for engaging with the synchronization frame (31); the adjustment mechanism (2) further comprises a spring (24) installed between the blade (23) and the side wall of the battery box (1); A latch pin (34) is slidably connected in the synchronous frame (31) along the radial direction of the screw rod (32) and can be plugged into a thread groove in the screw rod (32); The driving mechanism (3) further comprises a driving housing (35) fixed in the battery box (1), and a driving piston (36) sealingly and slidably connected in the driving housing (35); the latch (34) and the driving piston (36) slide synchronously; An electric push rod (4) and a pump housing (42) are fixedly connected inside the battery box (1); a push rod piston (41) is fixedly connected to the output shaft of the electric push rod (4) and is sealed and slides inside the pump housing (42); and the pump housing (42) is connected to each drive housing (35).

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