Explosion-proof detection device for lithium battery

Abstract

The utility model relates to a lithium battery explosion-proof detection device, which comprises a detection chassis and a pricking needle, a high-order platform is arranged on the right side of the detection chassis, a mounting plate is arranged on the left side of the top of the detection chassis, two limiting frames are arranged on the right side of the mounting plate and are divided into an adjustable limiting frame and a fixed limiting frame, sliding rails are symmetrically arranged on the left sides in the limiting frames, and positioning rollers are arranged in the sliding rails in a sliding manner. A hinge seat is arranged at the top of the high-order table, a push rod is installed on the hinge seat, a clamping bolt is connected to the left side of the push rod, and a positioning block is arranged on the clamping bolt. By arranging the two positioning rollers connected through the spring, when the battery moves leftwards, the positioning rollers can be extruded to be opened, two positioning points are formed around the left side of the battery, meanwhile, the movable positioning block is arranged on the right side of the battery, and the left side of the positioning block is in a 90-degree bevel shape, that is, after the positioning block moves leftwards to abut against the battery, the positioning points are formed. And therefore, three-point limiting can be formed by matching with the positioning roller, and the most stable limiting mode is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery detection, and specifically relates to an explosion-proof detection device. Background Art

[0002] Before leaving the factory, lithium batteries need to undergo a certain degree of explosion-proof testing to ensure the safety of the batteries under various extreme conditions. These tests mainly include mechanical tests such as extrusion tests, puncture tests, and drop tests. The specific operation of the puncture test is to pierce the lithium battery with a sharp object and observe the performance of the battery during the puncture process to ensure that it does not cause unsafe phenomena such as fire and explosion.

[0003] Patent CN220603657U discloses a square battery needle puncture test fixture, which breaks through the conventional process of using bolts to connect the fixing plate and the clamping plate, making the clamping process of the square battery easy to adjust, and the clamping and loosening actions are also faster, which is used to improve the efficiency of the test. However, lithium batteries have diverse shapes, and cylindrical batteries are more common than square batteries, such as laptops, mobile phones, etc., and the above-disclosed technical solution is not applicable to the explosion-proof detection of cylindrical batteries. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery explosion-proof detection device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery explosion-proof detection device, comprising a detection chassis and a puncture needle, a high-level platform is provided on the right side of the detection chassis, a mounting plate is provided on the left side of the top of the detection chassis, two limit frames are provided on the right side of the mounting plate, the limit frames are divided into adjustable limit frames and fixed limit frames, slide rails are symmetrically provided on the left side of the limit frame, positioning rollers are slidably provided in the slide rails, springs are connected between the positioning rollers, an articulated seat is provided on the top of the high-level platform, a push rod is installed on the articulated seat, a bolt is connected to the left side of the push rod, and a positioning block is provided on the bolt.

[0006] Preferably, the upper portion of the mounting plate is symmetrically provided with adjustment grooves, and the adjustable limit frame is rotatably installed in the adjustment groove via a locking bolt.

[0007] Preferably, the left side of the fixed limiting frame is connected to a receiving base via a connecting plate.

[0008] Preferably, the left side of the positioning block is set at a 90° angle.

[0009] Preferably, a puncture groove is provided in the middle of the mounting plate, and the puncture groove is located on the right side of the puncture needle.

[0010] Preferably, a clamping block is provided on the right side of the bottom inner portion of the articulated seat, a hinge head is rotatably provided on the left side of the top portion of the articulated seat, and internal threads are provided on the top of the clamping block and the inner side of the hinge head.

[0011] Preferably, the push rod is wound with an external thread.

[0012] Preferably, a hollow turning handle is provided on the right side of the push rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model sets two positioning rollers connected by springs. When the battery moves to the left, the positioning rollers are squeezed to open and two positioning points are formed around the left side of the battery. At the same time, a movable positioning block is set on the right side of the battery. The left side of the positioning block is in a 90° angle shape, that is, after the positioning block moves to the left and presses against the battery, it can cooperate with the positioning rollers to form a three-point limit, thereby realizing the most stable limit mode; then the upper limit frame is set to a slidable and adjustable type, the positioning block on the right is set to be driven to move to the left after rotation, and a hole for the needle to pass through is replaced with a puncture groove, which can meet the puncture of batteries of different specifications, heights and diameters to the maximum extent, thereby improving the puncture efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model;

[0016] Figure 3 It is an exploded view of the limit frame in the utility model;

[0017] Figure 4 It is another partial three-dimensional structural schematic diagram of the utility model.

[0018] Numbers in the figure: 1-detection chassis, 2-puncture needle, 3-high-level platform, 4-mounting plate, 5-limit frame, 501-adjustable limit frame, 502-fixed limit frame, 6-slide rail, 7-positioning roller, 8-spring, 9-hinge seat, 10-push rod, 11-bolt, 12-positioning block, 13-adjustment slot, 14-locking bolt, 15-receiving base, 151-connecting plate, 16-puncture slot, 17-hinge head, 18-block, 19-internal thread, 20-external thread, 21-hollow turning handle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example 1

[0021] like Figures 1 to 4 The lithium battery explosion-proof detection device shown in the figure includes a detection chassis 1 and a puncture needle 2. A high-level platform 3 is provided on the right side of the detection chassis 1. A mounting plate 4 is provided on the left side of the top of the detection chassis 1. Two limit frames 5 are provided on the right side of the mounting plate 4, which are divided into an adjustable limit frame 501 and a fixed limit frame 502. A slide rail 6 is symmetrically provided on the left side of the limit frame 5. A positioning roller 7 is slidably provided in the slide rail 6. A spring 8 is connected between the positioning rollers 7. An articulated seat 9 is provided on the top of the high-level platform 3. A push rod 10 is installed on the articulated seat 9. A clamping bolt 11 is connected to the left side of the push rod 10. A positioning block 12 is provided on the clamping bolt 11. The upper part of the mounting plate 4 is opposite to the upper part of the mounting plate 4. An adjustment slot 13 is provided, in which an adjustable limit frame 501 is rotatably installed through a lock bolt 14; the left side of the fixed limit frame 502 is connected to a receiving base 15 through a connecting plate 151; the left side of the positioning block 12 is set at a 90° angle; a puncture slot 16 is provided in the middle of the mounting plate 4, and the puncture slot 16 is located on the right side of the puncture needle 2; a clamping block 18 is provided on the right side of the bottom of the hinge seat 9, and a hinge head 17 is rotatably provided on the left side of the top of the hinge seat 9, and an internal thread 19 is provided on the top of the clamping block 18 and the inner side of the hinge head 17; an external thread 20 is wound around the push rod 10; a hollow turning handle 21 is provided on the right side of the push rod 10.

[0022] The utility model sets two positioning rollers 7 connected by springs 8. When the battery moves to the left, the positioning rollers 7 are squeezed to open and two positioning points are formed around the left side of the battery. At the same time, a movable positioning block 12 is set on the right side of the battery. The left side of the positioning block 12 is in a 90° angle shape, that is, after the positioning block 12 moves to the left and abuts against the battery, it can cooperate with the positioning rollers 7 to form a three-point limit, thereby realizing the most stable limit mode. Then, the upper limit frame 5 is set to be slidable and adjustable, the positioning block 12 on the right is set to be driven to move to the left after rotation, and a hole for the needle 2 to pass through is replaced with a puncture groove 16, so as to meet the puncture of batteries of different specifications, different heights and different diameters to the maximum extent, thereby improving the puncture efficiency.

[0023] Example 2

[0024] like Figures 1 to 4The lithium battery explosion-proof detection device shown includes a detection chassis 1 and a puncture needle 2. It is known that the puncture test needs to penetrate the center of the battery, and the penetration direction can be the top or the side. However, common lithium batteries are long strips. If the top of the battery is penetrated, a needle of a certain length is required, which is more troublesome to handle. Therefore, in this embodiment, the puncture direction from the side is adopted. The battery is placed on the detection chassis 1, and then the puncture needle 2 is used to penetrate the left side of the battery until the battery is penetrated. The performance of the battery during the puncture process is observed to ensure that it does not have unsafe phenomena such as fire and explosion, and it is a qualified product.

[0025] Generally, in order to achieve accurate puncture, the operator needs to support and limit the battery to drive the battery to be fixed in a certain place. However, there are too many manual operations in this way, which not only easily causes the safety hazard of the needle 2 stabbing the hand, but also causes the defective product to accidentally injure the operator or even the operating room when it catches fire. Therefore, it is necessary to limit the battery. A mounting plate 4 is provided on the left side of the top of the detection chassis 1. The mounting plate 4 is in a vertical shape and is used to receive the limiting component. A limiting frame 5 is provided on the right side of the mounting plate 4. The limiting frame 5 is in the shape of an opening on the right side, which can provide the initial entry of the battery. Then, the right opening of the limiting frame 5 will be larger than the diameter of most batteries. The limiting frame 5 is symmetrically provided with a slide rail 6 on the left side. The slide rail 6 is arranged front and back, and a positioning roller 7 is slidably provided in the slide rail 6. The positioning roller 7 is a vertical cylindrical shape. In the initial state, the positioning roller 7 in the same limiting frame 5 will be kept in a close state by the connected spring 8, but because there is a certain distance between the slide rails 6, there will also be a certain distance area between the positioning rollers 7, which is used to cooperate with the battery to move to the left to perform the action of clamping and limiting.

[0026] When a puncture test is required, the battery on the test chassis 1 can be pushed to the left until the battery is pushed into between the positioning rollers 7 through the right opening of the limit frame 5, and then the positioning rollers 7 are squeezed to move outward. While moving outward, the positioning rollers 7 will also include the outer wall of the battery to limit the left side of the battery.

[0027] Next, the positioning roller 7 will realize the front and rear limit of the left side of the battery, but the right side of the battery still lacks the limit force, and the puncture of the puncture needle 2 is also a rightward force, and cannot effectively realize the limit of the battery, and thus cannot cooperate with the puncture test of the battery. Therefore, a high-level platform 3 is provided on the right side of the detection chassis 1, and a component that can limit the right side of the battery is provided on the top of the high-level platform 3. The high-level platform 3 is not only for receiving the above-mentioned components, but also for raising the horizontal position of the above-mentioned components so that the limiting point on the right side falls on the middle part of the battery, thereby realizing more comprehensive and effective limiting. The above-mentioned components are specifically as follows: a hinge seat 9 is provided on the top of the high-level platform 3, a push rod 10 is installed on the hinge seat 9, a bolt 11 is provided on the left side of the push rod 10, a positioning block 12 is provided on the bolt 11, and a positioning area on the left side of the positioning block 12 is a recessed 90° angle, and then when the push rod 10 is pushed to drive the bolt 11 and the positioning block 12 to move to the left, the angle on the positioning block 12 will be driven to contact the battery and be stuck on the right side of the battery, and cooperate with the positioning roller 7 to form a three-point limit, thereby realizing the most stable limit mode.

[0028] In addition, when the positioning block 12 is against the battery, due to the special angle design of the positioning block 12, there is a certain gap between the rightmost side of the battery and the positioning block 12, which can provide storage space for the thorn 2 after it is completely penetrated, and can also be used to observe whether the thorn 2 can be completely penetrated, and then choose whether to replace it with a longer thorn 2 at a later time.

[0029] Example 3

[0030] In Example 2, it is shown that "when the push rod 10 drives the latch 11 and the positioning block 12 to move to the left, the corner of the positioning block 12 will be driven to contact the battery and get stuck on the right side of the battery, and cooperate with the positioning roller 7 to form a three-point limit to achieve the most stable limit mode". It can be seen that the technical solution of Example 2 can complete the limit and needle puncture test of the battery of the specified height, but for batteries of different specifications, it is necessary to adjust the distance between the two limit frames 5 and the horizontal position of the positioning block 12 to adapt the height and diameter of the battery. Therefore, this embodiment aims to make improvements on the basis of Example 2 to meet the limit of batteries of different specifications.

[0031] It is known that there are two limit frames 5, which are arranged one above and one below. Then, the upper limit frame 5 can be arranged to be slidably adjustable, that is, it is divided into an adjustable limit frame 501 and a fixed limit frame 502. As the name implies, the lower fixed limit frame 502 is fixedly arranged, and a receiving base 15 is connected to the left side of the fixed limit frame 502 through a connecting plate 151. The right edge of the receiving base 15 is rounded and used to place batteries. It can completely offset the distance between the bottom of the battery and the fixed limit frame 502, so that no matter how short the battery is, it can be stuck between the two limit frames 5. Then, by adjusting the height position of the upper adjustable limit frame 501, the two limit frames 5 are stuck between the heights of the batteries to achieve effective limit.

[0032] The upper part of the mounting plate 4 is symmetrically provided with adjustment slots 13, which are arranged front and back, and an adjustable limit frame 501 is rotatably installed in the adjustment slot 13 through a lock bolt 14, that is, the adjustable limit frame 501 is only in contact with the mounting plate 4. The operator can place the adjustable limit frame 501 against the right side of the mounting plate 4, and align the left lock of the adjustable limit frame 501 with the adjustment slot 13, and then insert the lock bolt 14 into the lock through the adjustment slot 13, and then rotate the lock bolt 14 to complete the fastening installation of the adjustable limit frame 501. Similarly, the operator can adjust the height of the adjustable limit frame 501 through the above actions. Correspondingly, the original hole position for the needle 2 to pass through needs to be replaced with a puncture slot 16, which is opened in the middle of the mounting plate 4 and located between the adjustment slots 13 to achieve the center puncture of the battery; and the lowest height of the puncture slot 16 is only higher than the fixed limit frame 502, which can meet the puncture of batteries of different heights to the greatest extent.

[0033] Example 4

[0034] While the technical effect of "setting the upper limit frame 5 to a slidable and adjustable type, and replacing a hole for the needle 2 to pass through with a puncture groove 16 to maximize the satisfaction of battery punctures of different heights" is achieved in Example 3, it is understandable that the movement of the positioning block 12 driven by the right push rod 10 also needs to be effectively processed.

[0035] A clamping block 18 is provided on the right side of the bottom inner side of the hinged seat 9. When an internal thread 19 is provided on the top of the clamping block 18 and an external thread 20 is wound around the push rod 10 accordingly, the push rod 10 can be placed on the clamping block 18. By rotating the push rod 10, the push rod 10 can be automatically moved to the left, and the positioning block 12 thereon can be moved to the left. By setting a certain length of the push rod 10, the operator can be driven to maintain a certain distance from the acupuncture test to avoid personal injury caused by sparks during the test. After the push rod 10 is against the battery, the hinged joint 17 can be rotated again to reset, and then the push rod 10 can be rotated again to realize the continued leftward movement of itself and the positioning block 12, thereby completing the overall positioning of the battery.

[0036] It should be noted that there is a space on the right side of the bolt 11 for the diameter of the push rod 10, so that when the push rod 10 is inserted into the bolt 11 and rotates, the bolt 11 is no longer affected by it and rotates easily. Then, when the positioning block 12 is against the battery, the bolt 11 is fixed horizontally and will not rotate circumferentially. It will only be affected by the horizontal force of the push rod 10, driving the positioning hole to press against the battery and continue to move to the left, forming a three-point limit with the positioning roller 7, thereby realizing the most stable limit mode.

[0037] Furthermore, a hollow turning handle 21 is provided on the right side of the turning rod, and the operator can easily rotate the turning rod through the hollow turning handle 21, thereby reducing the manpower consumption.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A lithium battery explosion-proof detection device, comprising a detection chassis (1) and a puncture needle (2), wherein a high-level platform (3) is provided on the right side of the detection chassis (1), characterized in that: The detection chassis (1) is provided with a mounting plate (4) on the left side of the top, and two limit frames (5) are provided on the right side of the mounting plate (4). The limit frames (5) are divided into an adjustable limit frame (501) and a fixed limit frame (502). A slide rail (6) is symmetrically provided on the left side of the limit frame (5). Positioning rollers (7) are slidably provided in the slide rail (6). Springs (8) are connected between the positioning rollers (7). A hinge seat (9) is provided on the top of the high-level platform (3). A push rod (10) is installed on the hinge seat (9). A latch bolt (11) is connected to the left side of the push rod (10), and a positioning block (12) is provided on the latch bolt (11).

2. A lithium battery explosion-proof detection device according to claim 1, characterized in that: The upper part of the mounting plate (4) is symmetrically provided with adjustment grooves (13), and the adjustable limit frame (501) is rotatably mounted in the adjustment groove (13) via a locking bolt (14).

3. A lithium battery explosion-proof detection device according to claim 1, characterized in that: The left side of the fixed limiting frame (502) is connected to a receiving base (15) via a connecting plate (151).

4. A lithium battery explosion-proof detection device according to claim 1, characterized in that: The left side of the positioning block (12) is arranged at a 90° angle.

5. A lithium battery explosion-proof detection device according to claim 1, characterized in that: A puncture groove (16) is provided in the middle of the mounting plate (4), and the puncture groove (16) is located on the right side of the puncture needle (2).

6. A lithium battery explosion-proof detection device according to claim 1, characterized in that: A clamping block (18) is provided on the right side of the bottom of the hinge seat (9), and a hinge head (17) is rotatably provided on the left side of the top of the hinge seat (9). Internal threads (19) are provided on the top of the clamping block (18) and the inner side of the hinge head (17).

7. A lithium battery explosion-proof detection device according to claim 1, characterized in that: The push rod (10) is wound with an external thread (20).

8. A lithium battery explosion-proof detection device according to claim 7, characterized in that: A hollow turning handle (21) is provided on the right side of the push rod (10).

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