Auxiliary device for detecting explosion-proof performance of lithium battery

Abstract

The utility model relates to the field of battery detection, in particular to an auxiliary device for detecting the explosion-proof performance of a lithium battery, and adopts the technical scheme that the auxiliary device for detecting the explosion-proof performance of the lithium battery comprises a numerical control computer, a positive electrode chuck, a negative electrode chuck and an infrared temperature detector, a protection circuit is arranged in the numerical control computer, a positive wire and a negative wire which are symmetrically distributed left and right are installed at the rear end of the numerical control computer, a positive chuck is fixedly connected to the positive wire, and a negative chuck is fixedly connected to the negative wire. Through the positive wire, the negative wire, the negative chuck and the positive chuck, a user can conveniently and electrically connect the numerical control computer, the numerical control computer performs charging detection on the lithium battery, and the infrared temperature detector performs temperature detection on the charged lithium battery so as to monitor the surface temperature of the lithium battery. A risk of potential overheat explosion is identified.

Description

Technical Field

[0001] The utility model belongs to the field of battery detection, and in particular relates to an auxiliary device for detecting the explosion-proof performance of a lithium battery. Background Art

[0002] Lithium batteries are often favored for their high energy density, low self-discharge rate and long service life. However, since they can also be dangerous during use, lithium batteries generally need to undergo explosion-proof testing before leaving the factory to check whether they can be used safely under extreme conditions such as high temperature, short circuit, and overcharge.

[0003] When existing lithium battery detection devices perform explosion-proof detection on lithium battery packs, their detection method is often to observe the appearance of the lithium battery when it is charging. However, the visual observation method is often difficult to detect the heating conditions inside the lithium battery. However, the main reason for the explosion of lithium batteries is usually that during the charging and discharging process, the battery cells generate high temperatures due to short circuits or other circuit problems. The high temperature will ignite the battery cells, causing the lithium battery to explode. Therefore, the single detection method of observing whether the appearance of the lithium battery has changed is not effective for lithium battery explosion-proof monitoring.

[0004] Therefore, in order to address the problem that the detection structure on the above-mentioned existing lithium battery detection device is difficult to monitor the explosion-proof performance of the lithium battery during charging, an auxiliary device for detecting the explosion-proof performance of the lithium battery is developed. By adding an infrared temperature detection structure, a safety power supply structure and a numerical control analysis structure to the lithium battery explosion-proof detection device, the existing lithium battery detection device can perform real-time detection of the temperature inside the lithium battery in the charging state, so as to identify the potential risk of overheating and explosion during the charging process. Utility Model Content

[0005] In order to overcome the problem that the detection structure of the existing lithium battery detection device is difficult to perform anti-explosion monitoring on the lithium battery during charging.

[0006] The technical solution of the utility model is: an auxiliary device for detecting the explosion-proof performance of a lithium battery, comprising a numerical control computer, a positive electrode clamp, a negative electrode clamp and an infrared temperature detector, the infrared temperature detector being installed at the lower end of the numerical control computer, a protection circuit being provided inside the numerical control computer, positive and negative electrode wires being installed at the rear end of the numerical control computer, the positive electrode clamp being fixedly connected to the positive electrode wire, and the negative electrode clamp being fixedly connected to the negative electrode wire.

[0007] Preferably, the positive electrode wire, negative electrode wire, negative electrode clamp and positive electrode clamp can facilitate the user to electrically connect the CNC computer, and the CNC computer can perform charging detection for the lithium battery, and the infrared temperature detector can perform temperature detection on the lithium battery during charging to monitor the surface temperature of the lithium battery and identify potential overheating and explosion risks.

[0008] Preferably, a first slot is provided through the upper end of the test box, and a left-right symmetrical exhaust slot is provided through the rear end of the test box. When in use, the first slot can facilitate the user to install the CNC computer into the test box, so that the user can electrically connect the CNC computer to the lithium battery for explosion-proof testing.

[0009] Preferably, a circulation fan is installed in the exhaust slot, and the CNC computer is installed in the first slot body. When in use, the circulation fan can discharge the toxic gas in the test box to the outside when the lithium battery explodes.

[0010] Preferably, the protective shell is installed on the upper inner wall of the detection box, and the central groove of the protective shell fits with the outer wall of the infrared temperature detector. When in use, the protective shell can protect the infrared temperature detector and the CNC computer when the lithium battery explodes.

[0011] Preferably, a carrying platform is fixedly connected to the inner wall of the lower end of the test box, a storage slot is opened at the upper end of the carrying platform, and two sets of rotating frames symmetrically distributed on the left and right are fixedly connected to the four corner edges of the front end of the test box. When in use, the square lithium battery can be better supported by the carrying platform and the storage slot to prevent the lithium battery from being displaced during explosion.

[0012] Preferably, a box door is hinged on the rotating frame, and a handle is fixed to the front end of the box door. When in use, workers can open the test box and take out or put in lithium batteries by rotating the box door.

[0013] Preferably, a mobile platform is fixedly connected to the lower end of the detection box, and moving wheels are fixedly connected to the four corner edges of the lower end of the mobile platform. A self-locking structure is provided on the moving wheels. When in use, the mobile platform and the moving wheels can facilitate the user to push the detection box for flexible movement, so that the user can use it easily.

[0014] Beneficial effects of the utility model:

[0015] 1. Through the positive and negative wires and the negative and positive clamps, users can easily connect the CNC computer to the battery, and the CNC computer will perform charging detection for the lithium battery. The infrared temperature detector will detect the temperature of the lithium battery during charging to monitor the surface temperature of the lithium battery. Compared with existing lithium battery testing equipment, it can identify the potential risk of overheating and explosion of lithium batteries during charging.

[0016] 2. The protective shell can protect the infrared temperature detector and the CNC computer when the lithium battery explodes. Compared with the existing lithium battery detection structure, the service life of the detection structure can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Shown is a schematic diagram of the three-dimensional structure of the auxiliary device for detecting the explosion-proof performance of lithium batteries of the present invention;

[0018] Figure 2 Shown is a schematic diagram of the exploded three-dimensional structure of the auxiliary device for detecting the explosion-proof performance of lithium batteries of the present invention;

[0019] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the mobile platform and mobile wheels of the auxiliary device for detecting the explosion-proof performance of lithium batteries of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the auxiliary device for testing the explosion-proof performance of lithium batteries of the present invention, including the test box, circulating fan, rotating frame and supporting platform;

[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the auxiliary device for testing the explosion-proof performance of lithium batteries of the present invention, which includes a CNC computer, a positive electrode chuck, a negative electrode chuck, and an infrared temperature detector;

[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the box door and handle of the auxiliary device for explosion-proof performance testing of lithium batteries of the present invention.

[0023] Explanation of the accompanying drawings: 1-mobile platform, 2-detection box, 3-CNC computer, 4-box door, 5-moving wheel, 6-rotating frame, 7-carrying platform, 8-storage slot, 9-first slot body, 10-exhaust slot, 11-circulation fan, 12-positive electrode wire, 13-positive electrode clamp, 14-negative electrode wire, 15-negative electrode clamp, 16-protective shell, 17-infrared temperature detector, 18-handle. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1-6The utility model provides an embodiment: an auxiliary device for detecting the explosion-proof performance of a lithium battery, comprising a numerical control computer 3, a positive electrode clamp 13, a negative electrode clamp 15 and an infrared temperature detector 17. The infrared temperature detector 17 is installed at the lower end of the numerical control computer 3, and a protection circuit is provided in the numerical control computer 3. The rear end of the numerical control computer 3 is installed with positive and negative electrode wires 12 and 14 symmetrically distributed on the left and right. The positive electrode clamp 13 is fixedly connected to the positive electrode wire 12, and the negative electrode clamp 15 is fixedly connected to the negative electrode wire 14. The positive electrode wire 12, the negative electrode wire 14, the negative electrode clamp 15 and the positive electrode clamp 13 can facilitate the user to electrically connect the numerical control computer 3, and the numerical control computer 3 is used to perform charging detection for the lithium battery, and the infrared temperature detector 17 is used to detect the temperature of the lithium battery during charging, so as to monitor the surface temperature of the lithium battery and identify the potential risk of overheating and explosion.

[0026] See also Figure 4-5 In this embodiment, a first slot body 9 is provided through the upper end of the detection box 2, and a left-right symmetrical exhaust slot 10 is provided through the rear end of the detection box 2. When in use, the first slot body 9 can facilitate the user to install the CNC computer 3 into the detection box 2, so that the user can electrically connect the CNC computer 3 to the lithium battery for explosion-proof testing. A circulation fan 11 is installed in the exhaust slot 10, and the CNC computer 3 is installed in the first slot body 9. When in use, the circulating fan 11 can be used to discharge the toxic gas in the detection box 2 when the lithium battery explodes. The protective shell 16 is installed on the inner wall of the upper end of the detection box 2, and the central slot body of the protective shell 16 is in contact with the outer wall of the infrared temperature detector 17. When in use, the protective shell 16 can be used to protect the infrared temperature detector 17 and the CNC computer 3 when the lithium battery explodes.

[0027] See also Figure 3-Figure 6 In this embodiment, a carrying platform 7 is fixed to the inner wall of the lower end of the detection box 2, and a storage groove 8 is opened at the upper end of the carrying platform 7. Two sets of rotating frames 6 with left and right symmetrical distribution are fixed at the four corner edges of the front end of the detection box 2. When in use, the square lithium battery can be better carried by the carrying platform 7 and the storage groove 8 to prevent the lithium battery from being displaced when it explodes. A box door 4 is hinged on the rotating frame 6, and a handle 18 is fixed to the front end of the box door 4. When in use, it is convenient for workers to open the detection box 2 and take out or put the lithium battery from the detection box 2 by rotating the box door 4. The lower end of the detection box 2 is fixed with a mobile platform 1, and the four corner edges of the lower end of the mobile platform 1 are fixed with moving wheels 5. The moving wheels 5 are provided with a self-locking structure. When in use, the mobile platform 1 and the moving wheels 5 can facilitate the user to push the detection box 2 for flexible movement, so that the user can use it conveniently.

[0028] When in use, first pull the handle 18 to rotate the two doors 4 open, and then put the lithium battery to be tested into the storage slot 8, and then clamp the negative electrode clamp 15 and the positive electrode clamp 13 onto the positive and negative electrodes of the lithium battery respectively, and then rotate the two doors 4 to close;

[0029] Next, the CNC computer 3 is started, and the CNC computer 3 transmits the mains electricity to the lithium battery through the positive wire 12 and the negative wire 14 to power it. The CNC computer 3 simulates the charging voltage required by different types of lithium batteries, and then the infrared temperature detector 17 detects the temperature of the lithium battery surface under constant voltage charging to detect the potential risk of overheating and explosion of the lithium battery under constant voltage.

[0030] Through the above steps, the positive electrode wire 12, the negative electrode wire 14 and the negative electrode clamp 15 and the positive electrode clamp 13 can be conveniently connected by the user to the numerical control computer 3, and the numerical control computer 3 is used to perform charging detection for the lithium battery, and the infrared temperature detector 17 is used to detect the temperature of the lithium battery during charging to monitor the surface temperature of the lithium battery and identify potential risks of overheating and explosion, thereby solving the problem that the detection structure on the existing lithium battery detection device is difficult to perform anti-explosion monitoring of the lithium battery during charging.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An auxiliary device for detecting the explosion-proof performance of a lithium battery, comprising a numerical control computer (3), characterized in that: The invention also includes a positive electrode clamp (13), a negative electrode clamp (15) and an infrared temperature detector (17). The infrared temperature detector (17) is installed at the lower end of the numerical control computer (3). A protection circuit is provided in the numerical control computer (3). A positive electrode wire (12) and a negative electrode wire (14) symmetrically distributed on the left and right are installed at the rear end of the numerical control computer (3). The positive electrode clamp (13) is fixedly connected to the positive electrode wire (12), and the negative electrode clamp (15) is fixedly connected to the negative electrode wire (14).

2. The auxiliary device for detecting the explosion-proof performance of a lithium battery according to claim 1, characterized in that: A first slot body (9) is provided through the upper end of the detection box (2), and a left-right symmetrical exhaust slot (10) is provided through the rear end of the detection box (2).

3. The auxiliary device for detecting the explosion-proof performance of a lithium battery according to claim 2, characterized in that: A circulating fan (11) is installed in the exhaust trough (10), and the numerical control computer (3) is installed in the first trough body (9).

4. The auxiliary device for detecting the explosion-proof performance of a lithium battery according to claim 3, characterized in that: The protective shell (16) is installed on the inner wall of the upper end of the detection box (2), and the central groove of the protective shell (16) is in contact with the outer wall of the infrared temperature detector (17).

5. The auxiliary device for detecting explosion-proof performance of lithium batteries according to claim 4, characterized in that: A bearing platform (7) is fixedly connected to the inner wall of the lower end of the detection box (2), a storage groove (8) is provided at the upper end of the bearing platform (7), and two groups of rotating frames (6) symmetrically distributed on the left and right are fixedly connected to the four corner edges of the front end of the detection box (2).

6. The auxiliary device for detecting explosion-proof performance of a lithium battery according to claim 5, characterized in that: A box door (4) is hinged on the rotating frame (6), and a handle (18) is fixed to the front end of the box door (4).

7. The auxiliary device for detecting explosion-proof performance of a lithium battery according to claim 6, characterized in that: The lower end of the detection box (2) is fixedly connected to a mobile platform (1), and the four corner edges of the lower end of the mobile platform (1) are fixedly connected to mobile wheels (5), and a self-locking structure is provided on the mobile wheels (5).

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