Battery drop detection device

Abstract

The present invention relates to the field of battery testing, and specifically to a battery drop detection device, comprising a support frame for installation and fixing and a test base plate for providing a test bottom surface, the test base plate is installed at the bottom of the inner side of the support frame, and also comprises a clamping mechanism for clamping a battery to be tested and providing rotational power, a loosening mechanism for cooperating with the clamping mechanism for instantaneous release, and a power mechanism for providing power for the clamping mechanism. A lifting mechanism is installed on the inner side of the support frame, a movable mechanism is installed at the front end of the lifting mechanism, a power mechanism is installed inside a fixed seat of the movable mechanism, a fixed frame of the movable mechanism is connected to the front end of the power mechanism, the fixed frame is divided into a sliding part and a clamping part, two clamping parts are symmetrically arranged at the front end of the sliding part, and the clamping mechanism is installed on the clamping part, so as to solve the technical problem that the existing equipment can only test vertical drop during battery testing and cannot effectively simulate the degree of damage of the battery after rotational drop.

Description

Technical Field

[0001] The invention relates to the field of battery testing, and in particular to a battery drop detection device. Background Art

[0002] In battery drop detection, the following important parameters generally need to be tested: Appearance inspection: Check whether the battery shell has obvious damage, deformation or cracks. Dimension measurement: Measure the size of the battery to ensure that the size has not changed significantly after the drop to ensure that the internal structure is not seriously damaged. Voltage detection: Detect the open circuit voltage and internal resistance of the battery to evaluate whether there is a battery short circuit or other internal faults. Internal structure inspection: Depending on the situation, X-rays or other non-destructive testing techniques can be used to check whether the internal structure of the battery is intact, displaced or damaged. Functional testing: For example, charge and discharge performance tests to confirm whether the battery can still work normally after falling. The detection of these parameters helps to determine whether the battery is still safe and usable after falling.

[0003] Compared with the prior art, a Chinese invention patent with publication number CN115235393B discloses a lithium battery pack detection device and a detection method thereof, which adjusts the angle of a clamping component to test the battery when it falls at different angles. When this type of structure performs a drop test on the battery, most of the structures of the lithium batteries of electronic devices are rolled up with thin films. The impact in a single direction is very susceptible to the force distribution of the film structure itself, and cannot effectively simulate the rotational stress caused by the rotational friction with the bottom surface during the actual use environment. Therefore, the existing equipment cannot effectively simulate the drop of electronic equipment during actual use and the drop test of the battery under the condition of rotational stress. Summary of the invention

[0004] The present invention provides a battery drop detection device to solve the technical problem that the existing equipment can only test the vertical drop during the battery test and cannot effectively simulate the damage degree of the battery after the rotation drop.

[0005] A battery drop detection device of the present invention adopts the following technical scheme: it includes a support frame for installation and fixing and a test bottom plate for providing a test bottom surface, the test bottom plate is installed at the bottom of the inner side of the support frame, and also includes a clamping mechanism for clamping the battery to be tested and providing rotational power, a loosening mechanism for cooperating with the clamping mechanism to release instantly, and a power mechanism for providing power for the clamping mechanism. A lifting mechanism is installed on the inner side of the support frame, a movable mechanism is installed at the front end of the lifting mechanism, the power mechanism is installed inside the fixed seat of the movable mechanism, and a fixed frame of the movable mechanism is connected to the front end of the power mechanism. The fixed frame is divided into a sliding part and a clamping part, two clamping parts are symmetrically arranged at the front end of the sliding part, the clamping mechanism is installed on the clamping part, and the two loosening mechanisms are symmetrically installed on the upper and lower end surfaces of the sliding part of the fixed frame;

[0006] The clamping mechanism includes two adjusting sleeves, which are symmetrically arranged. The adjusting sleeves are transversely arranged on the clamping part of the fixing frame. The inside of the adjusting sleeve is connected with a clamping screw through a thread. A chuck is installed in the opposite direction of the clamping screw. An extrusion ring is arranged on the inner side of the clamping part of the fixing frame on the adjusting sleeve. An extrusion block is arranged on the side of the extrusion ring facing the fixing seat. A driving component for driving the chuck forward and reverse is arranged at the front end of the fixing seat.

[0007] Furthermore, the driving assembly includes a ratchet, which is mounted on the adjusting sleeve and located on one side of the extrusion ring. The ratchet is slidably connected to the adjusting sleeve through a spline. The front end of the fixed seat corresponds to the two ratchets and is respectively provided with a first rack and a second rack. The first rack has a toothed section in the upper half and a smooth section in the lower half, and the second rack has a smooth section in the upper half and a toothed section in the lower half.

[0008] Furthermore, the tensioning mechanism includes an impact block, and impact blocks are slidably arranged on the upper and lower end surfaces of the fixed frame, a swing frame is arranged at the center position inside the fixed frame, and the upper and lower ends of the swing frame are connected to the impact block through an impact transmission frame, a return spring is vertically arranged at the center position inside the swing frame, and push rods are arranged on both sides of the swing frame corresponding to the positions of the extrusion rings, locking electromagnetic switches are installed on the upper and lower sides of the front end surface of the fixed seat, and a blocking electromagnetic switch is arranged on the inner side of the locking electromagnetic switch near the middle position.

[0009] Furthermore, the power mechanism includes a sliding rod, a connecting block is connected to the rear end of the fixed frame, the sliding rod is vertically connected to the connecting block, support springs are installed outside the sliding rod and on the upper and lower sides of the connecting block, a nut is installed on the top of the sliding rod, and a locking assembly is provided at the bottom of the sliding rod, and both ends of the support spring are respectively fixed to the connecting block and the fixed seat.

[0010] Furthermore, the locking assembly includes a fixed tooth block and a mating tooth block, the fixed tooth block is fixedly connected to the bottom of the fixed seat, the sliding rod passes through the fixed tooth block and is connected to the mating tooth block located on the lower side of the fixed tooth block, the tooth block on the bottom surface of the fixed tooth block is meshed with the tooth block on the top surface of the mating tooth block and both are square teeth.

[0011] Furthermore, the extrusion block is divided into an upper extrusion section, a central release section, and a lower extrusion section, and the upper extrusion section and the lower extrusion section are conical structures.

[0012] Furthermore, the two support springs corresponding to each slide rod have the same rotation direction.

[0013] Furthermore, the material of the chuck is rubber.

[0014] Furthermore, the swing frame is a quadrilateral frame mechanism, the frames are connected by pins, and the swing frame is connected to the push rod and the impact transmission frame by pins.

[0015] Furthermore, the blocking electromagnetic switch is a telescopic structure.

[0016] The beneficial effects of the present invention are as follows: after the fixing frame is driven to move up and down, through the cooperation of the ratchet on the clamping mechanism, when the fixing frame is reset by the power mechanism, the clamp and the battery inside are driven to rotate, and at the same time, they are released instantly after reaching the center position, so that the battery can be subjected to a simulation experiment of rotating upward or rotating downward. After the battery falls onto the test bottom plate, the degree of damage to the battery in the case of rotating fall can be judged by observing the battery and the deformation of the internal structure, thereby improving the authenticity and diversity of the equipment simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a battery drop detection device of the present invention;

[0019] Figure 2 A schematic diagram of the structure of the movable mechanism of an embodiment of a battery drop detection device of the present invention;

[0020] Figure 3 A schematic diagram of the structure of a clamping mechanism of an embodiment of a battery drop detection device of the present invention;

[0021] Figure 4 It is a schematic diagram of the matching structure of an extrusion ring and an extrusion block of an embodiment of a battery drop detection device of the present invention;

[0022] Figure 5 A schematic diagram of a fixing frame structure of an embodiment of a battery drop detection device of the present invention;

[0023] Figure 6 It is a front view of the interior of a fixing frame of an embodiment of a battery drop detection device of the present invention;

[0024] Figure 7 A top view of the interior of a fixing frame of an embodiment of a battery drop detection device of the present invention;

[0025] Figure 8 A schematic diagram of the power mechanism structure of an embodiment of a battery drop detection device of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of a locked state of a fixed tooth block and a matching tooth block in an embodiment of a battery drop detection device of the present invention;

[0027] Fig.10 It is a structural schematic diagram of a battery drop detection device according to an embodiment of the present invention, in which a fixed tooth block and a matching tooth block are separated;

[0028] Fig.11 The figure is a schematic diagram of the structure of an adjusting sleeve of an embodiment of a battery drop detection device of the present invention.

[0029] In the figure: 1. support frame; 2. lifting mechanism; 3. movable mechanism; 4. clamping mechanism; 5. tensioning mechanism; 6. power mechanism; 7. test base plate; 31. fixed seat; 32. fixed frame; 41. chuck; 42. adjusting sleeve; 43. clamping screw; 44. first rack; 45. second rack; 46. extrusion block; 461. extrusion ring; 47. ratchet; 51. impact block; 52. locking electromagnetic switch; 53. blocking electromagnetic switch; 54. push rod; 55. swing frame; 56. reset spring; 57. impact transmission frame; 61. slide rod; 62. support spring; 63. nut; 64. fixed tooth block; 65. matching tooth block; 66. connecting block. DETAILED DESCRIPTION

[0030] 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.

[0031] An embodiment of a battery drop detection device of the present invention is as follows Figures 1 to 11 As shown, it includes a support frame 1 for installation and fixing and a test base plate 7 for providing a test bottom surface, the test base plate 7 is installed at the bottom of the inner side of the support frame 1, and also includes a clamping mechanism 4 for clamping the battery to be tested and providing rotational power and a tensioning mechanism 5 for cooperating with the clamping mechanism 4 to release instantly and a power mechanism 6 for providing power to the clamping mechanism 4. A lifting mechanism 2 is installed on the inner side of the support frame 1, the movable mechanism 3 is installed at the front end of the lifting mechanism 2, the power mechanism 6 is installed inside the fixed seat 31 of the movable mechanism 3, and the front end of the power mechanism 6 is connected to a fixed frame 32 of the movable mechanism 3, the fixed frame 32 is divided into a sliding part and a clamping part, the two clamping parts are symmetrically arranged at the front end of the sliding part, the clamping mechanism 4 is installed on the clamping part, and the two tensioning mechanisms 5 are symmetrically installed on the upper and lower end surfaces of the sliding part of the fixed frame 32;

[0032] The clamping mechanism 4 includes two adjusting sleeves 42, and the two adjusting sleeves 42 are symmetrically arranged. The adjusting sleeve 42 is horizontally arranged on the clamping part of the fixed frame 32. The inside of the adjusting sleeve 42 is connected with a clamping screw 43 through a thread. The clamping screw 43 is installed with a chuck 41 in the opposite direction. The adjusting sleeve 42 is provided with an extrusion ring 461 on the inner side of the clamping part of the fixed frame 32, and the extrusion ring 461 is provided with an extrusion block 46 on the side facing the fixed seat 31. The front end of the fixed seat 31 is provided with a driving component that cooperates to drive the chuck 41 to rotate forward and reverse.

[0033] In this embodiment, the driving assembly includes a ratchet 47, which is installed on the adjusting sleeve 42 and located on one side of the extrusion ring 461. The ratchet 47 is slidably connected to the adjusting sleeve 42 through a spline. The front end of the fixed seat 31 corresponds to the two ratchets 47 and is respectively provided with a first rack 44 and a second rack 45. The first rack 44 has a toothed section in the upper half and a smooth section in the lower half. The second rack 45 has a smooth section in the upper half and a toothed section in the lower half.

[0034] In this embodiment, the tensioning mechanism 5 includes an impact block 51, and the impact block 51 is slidably arranged on the upper and lower end surfaces of the fixed frame 32. A swing frame 55 is arranged at the center position inside the fixed frame 32. The upper and lower ends of the swing frame 55 are connected to the impact block 51 through an impact transmission frame 57. A reset spring 56 is vertically arranged at the center position inside the swing frame 55. A push rod 54 is arranged at the position corresponding to the extrusion ring 461 on both sides of the swing frame 55. A locking electromagnetic switch 52 is installed on the upper and lower sides of the front end surface of the fixed seat 31. The inner side of the locking electromagnetic switch 52 is close to A blocking electromagnetic switch 53 is provided in the middle position. When the locking electromagnetic switch 52 on the lower side is released, the fixing frame 32 slides quickly due to the traction of the supporting spring 62. At this time, the blocking electromagnetic switch 53 on the upper side protrudes, and the impact block 51 impacts the blocking electromagnetic switch 53, instantly causing the impact block 51 to retract into the inside of the fixing frame 32. The impact block 51 squeezes the swing frame 55, thereby causing the push rods 54 on both sides to squeeze the squeezing ring 461, thereby causing the adjusting sleeve 42 and the chuck 41 to deviate outward, and the battery clamped by the chuck 41 is quickly loosened and thrown out.

[0035] In this embodiment, the power mechanism 6 includes a slide rod 61, a connecting block 66 is connected to the rear end of the fixed frame 32, the slide rod 61 is vertically connected to the connecting block 66, and support springs 62 are installed outside the slide rod 61 and on the upper and lower sides of the connecting block 66. A nut 63 is installed on the top of the slide rod 61, and a locking assembly is provided at the bottom of the slide rod 61. The two ends of the support spring 62 are respectively fixed to the connecting block 66 and the fixed seat 31.

[0036] In this embodiment, the locking assembly includes a fixed tooth block 64 and a mating tooth block 65. The fixed tooth block 64 is fixedly connected to the bottom of the fixed seat 31. The sliding rod 61 passes through the fixed tooth block 64 and is connected to the mating tooth block 65 located on the lower side of the fixed tooth block 64. The tooth block on the bottom surface of the fixed tooth block 64 is meshed with the tooth block on the top surface of the mating tooth block 65 and both are square teeth.

[0037] In this embodiment, the extrusion block 46 is divided into an upper extrusion section, a center release section, and a lower extrusion section. The upper extrusion section and the lower extrusion section are conical structures. When the fixing frame 32 drives the adjusting sleeve 42 and the extrusion ring 461 to slide up or down, the extrusion ring 461 is squeezed by the conical surface of the extrusion block 46, and the extrusion ring 461 drives the adjusting sleeve 42 and the clamp 41 to clamp inward, thereby further ensuring the clamping of the battery.

[0038] In this embodiment, the two support springs 62 corresponding to each slide bar 61 have the same rotation direction. When a heavy battery needs to be tested, the slide bar 61 can be rotated to make the elastic preload of the support spring 62 tighter, so that the support spring 62 can provide greater elastic force.

[0039] In this embodiment, the material of the clamp 41 is rubber, which increases the friction force and ensures the clamping effect.

[0040] In this embodiment, the swing frame 55 is a quadrilateral frame structure, the frames are connected by pins, and the swing frame 55 is connected to the top rod 54 and the impact transmission frame 57 by the pins.

[0041] In this embodiment, the blocking electromagnetic switch 53 is a telescopic structure.

[0042] The working principle is as follows: according to the weight of the battery to be tested and the rotation specification to be tested, first press the nut 63 downward to make the slide bar 61 drive the matching tooth block 65 to sink and disengage from the fixed tooth block 64, and then the fixed tooth block 64 and the matching tooth block 65 are disengaged. At this time, rotate the slide bar 61 to adjust the pre-tightening force of the support spring 62, and loosen the nut 63 to lock the fixed tooth block 64 and the matching tooth block 65 to ensure the elastic force of the support spring 62;

[0043] Place the battery between the two chucks 41 and rotate the clamping screw 43 to make the chuck 41 clamp the battery. Throw it up or down as needed, pull the fixing frame 32, and make the fixing frame 32 slide up or down. During the sliding of the fixing frame 32, the extrusion ring 461 is squeezed by the conical surface of the extrusion block 46, so that the extrusion ring 461 drives the clamping screw 43 and the chuck 41 to clamp the battery in this embodiment through the adjusting sleeve 42. At the same time, because the ratchet 47 is unidirectionally rotating, when the fixing frame 32 is driven to be pulled down, the ratchet 47 on the right side is idling in the initial stage, and the ratchet 47 on the left side does not contact the tooth groove and does not rotate until the fixing frame 32 is pulled to the locking electromagnetic switch 52 position at the bottom. The locking electromagnetic switch 52 locks the impact block 51, and the position is maintained at this time to prepare for testing.

[0044] The locking electromagnetic switch 52 on the lower side is controlled to open while the blocking electromagnetic switch 53 on the upper side protrudes. At this time, the fixed frame 32 is instantly reset by the elastic force of the supporting spring 62. While resetting, the ratchet 47 on the right cooperates with the second rack 45 to drive the adjusting sleeve 42 and the chuck 41 to rotate, thereby driving the battery to rotate. When the impact block 51 hits the blocking electromagnetic switch 53, the impact block 51 is instantly retracted into the inside of the fixed frame 32, and the impact block 51 squeezes the swing frame 55, so that the push rods 54 on both sides squeeze the squeezing ring 461, and then the adjusting sleeve 42 and the chuck 41 are offset to the outside, and the battery clamped by the chuck 41 is quickly loosened and thrown out. After the battery is thrown out, it rotates and falls on the test base plate 7. The pressure detection mechanism at the bottom of the test base plate 7 is not drawn to record the impact force, and then the battery that is rotated and thrown out is subjected to power-on detection and subsequent appearance detection.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery drop detection device, comprising a support frame (1) for mounting and fixing and a test base plate (7) for providing a test bottom surface, wherein the test base plate (7) is mounted on the bottom of the inner side of the support frame (1), characterized in that: It also includes a clamping mechanism (4) for clamping the battery to be tested and providing rotational power, a tensioning mechanism (5) for cooperating with the clamping mechanism (4) to release instantly, and a power mechanism (6) for providing power to the clamping mechanism (4); a lifting mechanism (2) is installed on the inner side of the support frame (1); the movable mechanism (3) is installed at the front end of the lifting mechanism (2); the power mechanism (6) is installed inside the fixed seat (31) of the movable mechanism (3); the front end of the power mechanism (6) is connected to a fixed frame (32) of the movable mechanism (3); the fixed frame (32) is divided into a sliding part and a clamping part; two clamping parts are symmetrically arranged at the front end of the sliding part; the clamping mechanism (4) is installed on the clamping part; and the two tensioning mechanisms (5) are symmetrically installed on the upper and lower end surfaces of the sliding part of the fixed frame (32); The clamping mechanism (4) comprises two adjusting sleeves (42), the two adjusting sleeves (42) are symmetrically arranged, the adjusting sleeves (42) are transversely arranged on the clamping portion of the fixing frame (32), the adjusting sleeve (42) is internally connected with a clamping screw (43) by means of a thread, a chuck (41) is mounted in the opposite direction of the clamping screw (43), an extrusion ring (461) is arranged on the inner side of the clamping portion of the fixing frame (32) on the adjusting sleeve (42), an extrusion block (46) is arranged on the side of the extrusion ring (461) facing the fixing seat (31), and a driving component for cooperating with the fixing seat (31) to drive the chuck (41) to rotate forward and reversely is arranged at the front end of the fixing seat (31); The driving assembly comprises a ratchet (47), the ratchet (47) being mounted on the adjusting sleeve (42) and located on one side of the extrusion ring (461), the ratchet (47) being slidably connected to the adjusting sleeve (42) via a spline, the front end of the fixing seat (31) corresponding to the two ratchet wheels (47) being respectively provided with a first rack (44) and a second rack (45), the first rack (44) having an upper portion being a toothed section and a lower portion being a smooth section, and the second rack (45) having an upper portion being a smooth section and a lower portion being a toothed section; The tensioning mechanism (5) comprises an impact block (51), the impact blocks (51) are slidably arranged on the upper and lower end surfaces of the fixing frame (32), a swing frame (55) is arranged at the center position inside the fixing frame (32), the upper and lower ends of the swing frame (55) are connected to the impact block (51) through an impact transmission frame (57), a return spring (56) is vertically arranged at the center position inside the swing frame (55), push rods (54) are arranged on both sides of the swing frame (55) corresponding to the positions of the extrusion ring (461), locking electromagnetic switches (52) are installed on the upper and lower sides of the front end surface of the fixing seat (31), and a blocking electromagnetic switch (53) is arranged near the middle position inside the locking electromagnetic switch (52); The power mechanism (6) comprises a slide bar (61), a connecting block (66) is connected to the rear end of the fixing frame (32), the slide bar (61) is vertically penetrated through the connecting block (66), a support spring (62) is installed outside the slide bar (61) and located on the upper and lower sides of the connecting block (66), a nut (63) is installed on the top of the slide bar (61), a locking assembly is arranged at the bottom of the slide bar (61), and two ends of the support spring (62) are respectively fixed to the connecting block (66) and the fixing seat (31); The locking assembly comprises a fixed tooth block (64) and a matching tooth block (65), wherein the fixed tooth block (64) is fixedly connected to the bottom of the fixed seat (31), the sliding rod (61) passes through the fixed tooth block (64) and is connected to the matching tooth block (65) located at the lower side of the fixed tooth block (64), and the tooth block on the bottom surface of the fixed tooth block (64) meshes with the tooth block on the top surface of the matching tooth block (65) and both are square teeth; The swing frame (55) is a quadrilateral frame mechanism, the frames are connected via pins, and the swing frame (55) is connected to the push rod (54) and the impact transmission frame (57) via the pins.

2. A battery drop detection device according to claim 1, characterized in that: The extrusion block (46) is divided into an upper extrusion section, a central release section, and a lower extrusion section, and the upper extrusion section and the lower extrusion section are conical structures.

3. A battery drop detection device according to claim 1, characterized in that: The two support springs (62) corresponding to each slide rod (61) have the same rotation direction.

4. A battery drop detection device according to claim 1, characterized in that: The material of the clamping head (41) is rubber.

5. A battery drop detection device according to claim 1, characterized in that: The blocking electromagnetic switch (53) is a telescopic structure.

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