Detection device for lithium battery production

Abstract

The utility model relates to the field of lithium battery production, and discloses a detection device for lithium battery production, which comprises a placing seat and a left abutting block welded on the left side above the placing seat, the right side surface of the left abutting block is provided with a positive electrode through four spring columns, a spring probe is fixed on the left abutting block, and the right side surface of the left abutting block is provided with a negative electrode through four spring columns. The left side of the left abutting block is provided with a positive electrode, the middle of the left side of the positive electrode is fixed to a probe head of a spring probe, a right abutting block is arranged above the placement seat in a left-right sliding mode, and the right abutting block is provided with a negative electrode. The positive electrode can shift left and right under the action of the spring column and the spring probe and can be quickly connected with the positive electrode and the negative electrode of the lithium battery, the positive electrode and the negative electrode are integrally widened and lengthened, quick connection with the lithium battery is facilitated, the arc-shaped surface is arranged above the positive electrode, the surface is smooth, and the positive electrode of the lithium battery cannot be scratched.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery production, in particular to a detection device for lithium battery production. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solutions. After processing and production, they also need to use a power detection system or a digital multimeter (with corresponding loads) for corresponding detection. In the Chinese utility model patent with announcement number CN215005507U, a cylindrical lithium battery detection tool is disclosed, including a detection base, an adjustment baffle, a positive spring needle and a negative spring needle. The size of the measurement position is changed by changing the position of the adjustment baffle and the positive and negative spring needles. With different output sources, it is suitable for the detection of voltage, current, and internal resistance of various types of cylindrical lithium batteries.

[0003] With respect to the above-mentioned related technologies, the inventor believes that there are the following defects: In the above-mentioned structure, the negative electrode spring pin and the positive electrode spring pin are used to contact the positive and negative electrodes of the lithium battery. Figure 2 It can be seen that the tops of the negative spring pins and the positive spring pins are sharp. When the lithium battery is pressed between the negative spring pins and the positive spring pins, it will scratch the positive and negative plates. In addition, the contact position between the negative spring pins and the positive spring pins and the lithium battery is small, so special attention needs to be paid to aligning them when placing them, which also makes the operation more complicated. For this reason, we designed a detection device for lithium battery production. Utility Model Content

[0004] In order to solve the technical problems that the negative electrode spring needle and the positive electrode spring needle may scratch the lithium battery pole piece and are difficult to place, the utility model provides a detection device for lithium battery production.

[0005] The utility model is implemented by the following technical scheme: a detection device for lithium battery production, including a placement seat, and a left abutment block welded on the left side above the placement seat, the right side surface of the left abutment block is provided with a positive electrode through four spring columns, a spring probe is fixed on the left abutment block, and the middle of the left side of the positive electrode is fixed to the needle head of the spring probe, a right abutment block is slidably arranged above the placement seat, and a negative electrode is provided on the right abutment block, and the positive electrode and the negative electrode are electrically connected to a battery tester through a wire.

[0006] As a further improvement of the above scheme, the upper part of the inward-facing surface of the positive electrode and the negative electrode are both designed with an inclined surface, and the upper edge of the inclined surface and the inward-facing surface is rounded to form an arc surface, and the positive electrode of the lithium battery (i.e., the end with the protrusion) is above the arc surface of the positive electrode. When pressed down, the positive electrode can be pushed to move to the left along the arc surface, and the surface is smooth, which will not cause scratches to the positive electrode of the lithium battery;

[0007] The positive electrode and the negative electrode have the same height and size, and both are widened and lengthened. The length, width and height of the entire positive electrode and negative electrode are relatively large, so that connection tests can be performed on lithium batteries of various sizes without having to be too precise in the installation position of the lithium battery, thereby improving convenience.

[0008] As a further improvement of the above scheme, the right side surface of the placement seat is recessed toward the left to form an adjustment groove, the cross-section of the adjustment groove is a convex structure, a bolt is arranged in the adjustment groove, the screw rod of the bolt passes through the extension plate on the right abutment block and is placed above it, and a nut is threadedly connected above the bolt, and by loosening the nut, the right abutment block can be moved left and right, thereby changing the distance between the left abutment block and the right abutment block, which is suitable for lithium batteries of different lengths.

[0009] As a further improvement of the above scheme, two sliding holes are provided on the rear sides of the left abutment block and the right abutment block, and the left contact plate is arranged on the rear side of the left abutment block for moving forward and backward through the sliding holes and the axle pin, and the right contact plate is arranged on the rear side of the right abutment block for moving forward and backward through the sliding holes and the axle pin.

[0010] As a further improvement of the above scheme, screw holes are provided on the outward surfaces of the left abutment block and the right abutment block, and the screw holes are connected to the sliding holes. A locking screw is threadedly connected in each screw hole, and the inward side of the locking screw is tightly pressed against the axle pins on the corresponding left contact plate and right contact plate. The left contact plate and the right contact plate can be moved backward as needed, so that a thicker lithium battery can be placed on the placement seat, and the positive and negative electrodes of the lithium battery can contact the positive electrode and the negative electrode.

[0011] As a further improvement of the above scheme, a positioning plate 1 is provided on the right side of the front side of the right contact plate, and the left surface of the positioning plate 1 is flush with the left surface of the negative electrode. The negative electrode of the lithium battery contacts the positioning plate 1 and moves downward, so that it can be connected to the negative electrode;

[0012] A positioning plate 2 is arranged on the left side of the front side of the left contact plate, and the distance between the right surface of the positioning plate 2 and the right surface of the positive electrode is 1-3mm. The positive electrode of the lithium battery contacts the positioning plate 2 and moves downward, and the positive electrode of the lithium battery will be placed above the arc surface, thereby pushing the positive electrode to move to the left and get stuck on the right side of the positive electrode.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model sets a negative electrode on the right abutment block and a positive electrode on the left abutment block, and the positive electrode can be offset left and right under the action of the spring column and the spring probe, so as to be able to quickly connect with the positive and negative electrodes of the lithium battery. The positive electrode and the negative electrode are designed to be widened and lengthened as a whole, which is convenient for quick connection with the lithium battery. The positive electrode is provided with an arc surface above and the surface is smooth, so as not to scratch the positive electrode of the lithium battery.

[0015] 2. By designing the right abutment block to slide left and right, it is suitable for lithium batteries of various lengths, and a left contact plate and a right contact plate are respectively provided on the left and right sides. Positioning plate 2 and positioning plate 1 are provided on the left contact plate and the right contact plate, which can quickly adjust the position of the right abutment block and ensure that the lithium battery can contact the positive electrode and the negative electrode, and also improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a lithium battery production detection device provided by the utility model;

[0017] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 for Figure 1 Front view of the diagram;

[0019] Figure 4 It is a structural schematic diagram of the placement seat and the left abutment block and the right abutment block;

[0020] Figure 5 for Figure 4 Left and right isometric drawings of the.

[0021] Description of main symbols:

[0022] 1. Battery tester; 2. Placement seat; 21. Adjustment slide; 3. Left abutment block; 4. Positive electrode; 41. Negative electrode; 5. Spring column; 6. Spring probe; 7. Right abutment block; 71. Extension plate; 8. Right contact plate; 81. Positioning plate one; 82. Locking screw; 9. Left contact plate; 91. Positioning plate two. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] Example:

[0025] Please combine Figure 1-Figure 5 A lithium battery production detection device of this embodiment includes a placement seat 2, and a left abutment block 3 welded on the left side above the placement seat 2, a positive electrode 4 is provided on the right surface of the left abutment block 3 through four spring columns 5, a spring probe 6 is fixed on the left abutment block 3, and the middle of the left side of the positive electrode 4 is fixed to the needle head of the spring probe 6, a right abutment block 7 is slidably arranged above the placement seat 2, and a negative electrode 41 is provided on the right abutment block 7, and the positive electrode 4 and the negative electrode 41 are electrically connected to the battery tester 1 through wires.

[0026] The upper part of the inward-facing surface of the positive electrode 4 and the negative electrode 41 is designed with an inclined surface, and the upper edge of the inclined surface and the inward-facing surface is rounded to form an arc surface. The positive electrode of the lithium battery (that is, the end of the lithium battery with a convexity) is above the arc surface of the positive electrode 4. When pressed down, the positive electrode 4 can be pushed to move to the left along the arc surface, and the surface is smooth, which will not cause scratches to the positive electrode of the lithium battery;

[0027] The positive electrode 4 and the negative electrode 41 have the same height and size, and both are widened and lengthened. The length, width and height of the entire positive electrode 4 and the negative electrode 41 are relatively large, which can perform connection tests on lithium batteries of various sizes without having to be too precise in the installation position of the lithium battery, thereby improving convenience.

[0028] The right side surface of the placement seat 2 is recessed toward the left to form an adjustment slot 21, and the cross-section of the adjustment slot 21 is a convex structure. A bolt is arranged in the adjustment slot 21, and the screw rod of the bolt passes through the extension plate 71 on the right abutment block 7 and is placed above it, and a nut is threadedly connected above the bolt. Loosening the nut can move the right abutment block 7 to the left or right, thereby changing the distance between the left abutment block 3 and the right abutment block 7, which is suitable for lithium batteries of different lengths.

[0029] Two sliding holes are provided on the rear sides of the left abutment block 3 and the right abutment block 7. The left contact plate 9 is arranged on the rear side of the left abutment block 3 and the right contact plate 8 is arranged on the rear side of the right abutment block 7 and can be moved forward and backward through the sliding holes and the axle pins.

[0030] The outward surfaces of the left abutment block 3 and the right abutment block 7 are provided with screw holes, and the screw holes are connected to the sliding holes. A locking screw 82 is threadedly connected in each screw hole. The inward side of the locking screw 82 is tightly pressed against the corresponding axle pins on the left contact plate 9 and the right contact plate 8. The left contact plate 9 and the right contact plate 8 can be moved backward as needed, so that a thicker lithium battery can be placed on the placement seat 2, and the positive and negative electrodes of the lithium battery can be in contact with the positive electrode 4 and the negative electrode 41.

[0031] A positioning plate 81 is provided on the right side of the front side of the right contact plate 8, and the left side surface of the positioning plate 81 is flush with the left side surface of the negative electrode 41. The negative electrode of the lithium battery contacts the positioning plate 81 and moves downward, so that it can be connected to the negative electrode 41;

[0032] A positioning plate 2 91 is provided on the left front side of the left contact plate 9. The right side surface of the positioning plate 2 91 is spaced 1-3 mm from the right side surface of the positive electrode 4. The positive electrode of the lithium battery contacts the positioning plate 2 91 and moves downward. The positive electrode of the lithium battery will be placed above the arc surface, thereby pushing the positive electrode 4 to move to the left and get stuck on the right side of the positive electrode 4.

[0033] The implementation principle of a detection device for lithium battery production in the embodiment of the present application is as follows: in actual use, the positions of the negative electrode 41 and the positioning plate one 81 and the positioning plate two 91 are adjusted according to the actual size of the lithium battery. Specifically, first, the locking screw 82 on the left abutment block 3 is rotated counterclockwise so that the left contact plate 9 can move backward. A lithium battery is held and the left end of the lithium battery is in contact with the positioning plate two 91 of the left contact plate 9, and the left side of the outer ring surface of the lithium battery is in contact with the front side surface of the left contact plate 9, while the positive electrode of the lithium battery is above the positive electrode 4. Then, the locking screw 82 is tightened, and then the nut on the bolt is loosened so that the right abutment block 7 can move left and right. The two locking screws 82 on the right contact plate 8 are also loosened. The right abutment block 7 is moved to the left and the right contact plate 8 is moved backward, so that the positioning plate two 91 is in contact with the right end of the lithium battery and the front side of the right contact plate 8 is in contact with the The outer surface of the lithium battery can be in contact, and then the positive electrode 4 and the negative electrode 41 on the left and right sides are connected to the corresponding wiring terminals of the battery tester 1 through wires. When testing the lithium battery, the left end of the lithium battery is attached to the left contact plate 9 and the positioning plate 1 81, and the right end of the lithium battery is attached to the right contact plate 8 and the positioning plate 2 91. The lithium battery is pressed downward, and the negative electrode of the lithium battery will contact the negative electrode 41, and the positive electrode of the lithium battery will move downward along the arc surface and contact the vertical surface of the positive electrode 4. At the same time, the positive electrode 4 will be compressed to the left, and then the lithium battery can be squeezed between the positive electrode 4 and the negative electrode 41, and connected to the positive and negative electrodes of the lithium battery to form a closed loop. The corresponding test results will be displayed on the battery tester 1. Then, the lithium battery can be pushed outward to make the lithium battery free from the squeezing of the positive electrode and the negative electrode, and the next lithium battery to be tested can be replaced;

[0034] By arranging a negative electrode 41 on the right abutment block 7 and a positive electrode 4 on the left abutment block 3, and the positive electrode 4 can be deflected left and right under the action of the spring column 5 and the spring probe 6, it can be quickly connected to the positive and negative electrodes of the lithium battery. The positive electrode 4 and the negative electrode 41 are designed to be widened and lengthened as a whole, which is convenient for quick connection with the lithium battery. The positive electrode 4 is provided with an arc surface on the top and the surface is smooth, which will not cause scratches to the positive electrode of the lithium battery.

[0035] By designing the right abutment block 7 to slide left and right, it is suitable for lithium batteries of various lengths, and a left contact plate 9 and a right contact plate 8 are respectively provided on the left and right sides. The left contact plate 9 and the right contact plate 8 are provided with a positioning plate 2 91 and a positioning plate 1 81, which can quickly adjust the position of the right abutment block 7 and ensure that the lithium battery can definitely contact the positive electrode 4 and the negative electrode 41, and also improve the detection efficiency.

[0036] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A detection device for lithium battery production, characterized in that: The invention comprises a placement seat (2), and a left abutment block (3) welded on the left side above the placement seat (2); a positive electrode (4) is arranged on the right side surface of the left abutment block (3) via four spring columns (5); a spring probe (6) is fixed on the left abutment block (3), and the middle of the left side of the positive electrode (4) is fixed to the needle head of the spring probe (6); a right abutment block (7) is arranged above the placement seat (2) so as to slide left and right, and a negative electrode (41) is arranged on the right abutment block (7); and both the positive electrode (4) and the negative electrode (41) are electrically connected to a battery tester (1) via a wire.

2. A lithium battery production detection device as claimed in claim 1, characterized in that: The upper part of the inward-facing surface of the positive electrode (4) and the negative electrode (41) are both designed to be inclined, and the inclined surface and the upper edge of the inward-facing surface are rounded to form an arc surface; The positive electrode (4) and the negative electrode (41) have the same height and size, and both are designed to be widened and lengthened.

3. A lithium battery production detection device as claimed in claim 1, characterized in that: The right side surface of the placement seat (2) is recessed toward the left to form an adjustment slot (21), the cross section of the adjustment slot (21) is a convex structure, a bolt is arranged in the adjustment slot (21), the screw rod of the bolt passes through the extension plate (71) on the right abutment block (7) and is placed above it, and a nut is threadedly connected above the bolt.

4. A lithium battery production detection device as claimed in claim 1, characterized in that: The rear sides of the left abutting block (3) and the right abutting block (7) are each provided with two sliding holes, and the left contact plate (9) is arranged on the rear side of the left abutting block (3) so as to move forward and backward through the sliding holes and the axle pin, and the right contact plate (8) is arranged on the rear side of the right abutting block (7) so as to move forward and backward through the sliding holes and the axle pin.

5. A lithium battery production detection device as claimed in claim 4, characterized in that: The outwardly facing surfaces of the left abutting block (3) and the right abutting block (7) are provided with screw holes, and the screw holes are connected to the sliding holes. A locking screw (82) is threadedly connected in each of the screw holes, and the inwardly facing side of the locking screw (82) is tightly abutted against the corresponding shaft pins on the left contact plate (9) and the right contact plate (8).

6. A lithium battery production detection device as claimed in claim 4, characterized in that: A positioning plate 1 (81) is provided on the right side of the front side of the right contact plate (8), and the left side surface of the positioning plate 1 (81) is flush with the left side surface of the negative electrode (41); A second positioning plate (91) is arranged on the left side of the front side of the left contact plate (9), and the distance between the right side surface of the second positioning plate (91) and the right side surface of the positive electrode (4) is 1-3 mm.

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