Rapid detection mechanism for battery aluminum wire

Abstract

The utility model provides a rapid detection mechanism for a battery aluminum wire, which belongs to the technical field of lithium battery welding quality detection and comprises a detection assembly, a connection assembly, a glass fiber plate and a placement box. The detection assembly is composed of a high-precision internal resistance tester, and the surface of the high-precision internal resistance tester is provided with a wiring port. According to the utility model, the tested body is a lithium battery, the positive electrode and the negative electrode of the battery are respectively connected in parallel to the circuit copper foil on the surface of the PCB through aluminum wires, the battery cell, the aluminum wires and the circuit copper foil have internal resistance, the internal resistance of the positive electrode and the negative electrode of the parallel circuit copper foil is tested by using a high-precision internal resistance tester, and the test value is recorded after the test so as to be compared with the internal resistance value in other strings. The tested internal resistance difference is compared, whether the aluminum wire is subjected to false soldering and solder skips or not can be quickly known, original single aluminum wire inspection is optimized to single aluminum wire inspection, and the detection efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery welding quality detection technical field, concretely is a kind of for the quick detection mechanism of battery aluminium wire. BACKGROUND

[0002] With the continuous popularity of electronic products, lithium battery plays a more and more important role in life. In the manufacturing process of lithium battery, welding is one of the most critical steps, and the quality of welding affects the service life and safety of the battery. During the welding process of the battery, there are some false welding or broken welding. At present, the market detection of aluminum wire for false welding and missed welding is almost visual inspection, or using tweezers to detect each aluminum wire. This operation leads to slow production efficiency, and it is easy to miss detection of large number of aluminum wires. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of quick detection mechanism for battery aluminium wire to solve the problem that the market detection of aluminum wire for false welding and missed welding is almost visual inspection, or using tweezers to detect each aluminum wire. This operation leads to slow production efficiency, and it is easy to miss detection of large number of aluminum wires.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a kind of quick detection mechanism for battery aluminium wire, including detection component, connecting component, glass fiber plate and placing box;

[0005] Among them: detection component is composed of high-precision internal resistance tester, the surface of high-precision internal resistance tester is provided with wiring port, the surface of high-precision internal resistance tester is equipped with adjusting knob, the side of adjusting knob is equipped with display screen, the inside of wiring port is inserted with test stylus;

[0006] Connecting component includes PCB board, the surface of PCB board is equipped with circuit copper foil, the surface of circuit copper foil is also equipped with aluminum wire, and the aluminum wire is arranged on the surface of PCB board;

[0007] The surface of glass fiber plate is placed with cylindrical lithium battery;

[0008] High-precision internal resistance tester is stored in the inside of placing box.

[0009] As a preferred scheme of the utility model: the top of placing box is hinged with box cover, and the inside of placing box and box cover is equipped with sponge lining.

[0010] As a preferred scheme of the utility model: the surface of sponge lining is provided with placing groove, and high-precision internal resistance tester and test stylus are placed in the inside of placing groove.

[0011] As one preferred scheme of the utility model: the surface of the placing box is provided with a lock catch, a hook is arranged on one side of the box cover, and the lock catch is buckled with the hook.

[0012] As one preferred scheme of the utility model: a handle is further arranged on one side of the high-precision internal resistance tester.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) the measured body is a lithium battery, the positive and negative of the battery are connected in parallel to the circuit copper foil on the surface of the PCB board through aluminum wires, the internal resistance of the battery, the aluminum wire and the circuit copper foil is measured, the high-precision internal resistance tester is used to test the internal resistance of the positive and negative of the circuit copper foil after parallel connection, the test value is recorded after testing, so as to compare with the internal resistance value of other strings, if the test value of each string is 4mΩ, one of the strings is 4.3mΩ, the false welding and the missing welding of the aluminum wire are checked, the internal resistance parallel connection formula (R1*R2) / (R1+R2) principle is used, the more the parallel resistance is, the smaller the resistance value is, and the smaller the relative resistance value difference is, the internal resistance difference is compared, and it is known whether the aluminum wire is false welded or missing welded, the single aluminum wire checking is optimized to single parallel checking, and the detection efficiency is greatly improved.

[0015] (2) the top of the placing box is hingedly connected with a box cover, sponge lining is arranged in the placing box and the box cover, the surface of the sponge lining is provided with a placing groove, the high-precision internal resistance tester is placed in the placing groove, the equipment is conveniently stored and placed, the sponge lining is soft, and the equipment is protected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the detection assembly structure schematic view of the utility model;

[0018] Figure 3 It is the connection assembly structure schematic view of the utility model;

[0019] Figure 4 It is the lock catch installation structure schematic view of the utility model.

[0020] In the drawing: 1, detection assembly; 101, high-precision internal resistance tester; 102, wiring port; 103, adjusting knob; 104, display screen; 105, test pen; 2, connection assembly; 201, PCB board; 202, circuit copper foil; 203, aluminum wire; 3, glass fiber plate; 4, cylindrical lithium battery; 5, placing box; 51, box cover; 52, sponge lining; 53, placing groove; 6, lock catch; 7, hook; 8, handle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 A kind of quick detection mechanism for battery aluminum wire, comprising: detection component 1, connecting component 2, glass fiber plate 3 and placement box 5;

[0023] Please refer to Figure 1 , Figure 2 Detection component 1 is composed of high-precision internal resistance tester 101, the surface of high-precision internal resistance tester 101 is provided with wiring port 102, high-precision internal resistance tester 101 is installed with adjusting knob 103 on the surface, the side of adjusting knob 103 is equipped with display screen 104, test pen 105 is inserted in the inside of wiring port 102.

[0024] Specific use time: detection component 1 includes high-precision internal resistance tester 101, high-precision internal resistance tester 101 is provided with wiring port 102, test pen 105 is inserted in the inside of wiring port 102, test resistance is facilitated by test pen 105, the current size of test pen 105 can be adjusted by adjusting knob 103, and the resistance value detected can be displayed and recorded by display screen 104, to facilitate detection personnel to view.

[0025] Please refer to Figure 1 , Figure 3 Connecting component 2 includes PCB board 201, PCB board 201 is installed with circuit copper foil 202 on the surface, circuit copper foil 202 is also installed with aluminum wire 203 on the surface, and aluminum wire 203 is distributed and arranged on the surface of PCB board 201.

[0026] Specific use time: PCB board 201 is installed with circuit copper foil 202 on the surface, and aluminum wire 203 is installed on the surface of circuit copper foil 202, before monitoring, the positive and negative poles of cylindrical lithium battery 4 are connected in parallel to circuit copper foil 202 by aluminum wire 203, to facilitate detection.

[0027] Please refer to Figure 1 Glass fiber plate 3 is placed with cylindrical lithium battery 4 on the surface.

[0028] Specific use time: lithium battery 4 is placed on glass fiber plate 3, and glass fiber plate 3 has insulation, so that cylindrical lithium battery 4 is kept insulated from the outside during the testing process.

[0029] Please refer to Figure 4 , the high-precision internal resistance tester 101 is accommodated inside the placing box 5, the top of the placing box 5 is hinged with a box cover 51, sponge linings 52 are installed inside the placing box 5 and the box cover 51, and placing grooves 53 are formed in the surfaces of the sponge linings 52, and the high-precision internal resistance tester 101 and the test pen 105 are placed inside the placing grooves 53.

[0030] In specific use, the top of the placing box 5 is hinged with the box cover 51, the sponge linings 52 are installed inside the placing box 5 and the box cover 51, the placing grooves 53 are formed in the surfaces of the sponge linings 52, and the high-precision internal resistance tester 101 is placed inside the placing grooves 53, so that the equipment can be conveniently accommodated and placed, and the sponge linings 52 are soft and can protect the equipment.

[0031] Please refer to Figure 4 , the surface of the placing box 5 is provided with a lock catch 6, one side of the box cover 51 is provided with a hook 7, and the lock catch 6 is buckled with the hook 7.

[0032] In specific use, the surface of the placing box 5 is provided with the lock catch 6, one side of the box cover 51 is provided with the hook 7, and the box cover 51 is buckled with the lock catch 6 through the hook 7 after being covered on the surface of the placing box 5, so that the internal equipment can be prevented from falling.

[0033] Please refer to Figure 2 , one side of the high-precision internal resistance tester 101 is further provided with a handle 8.

[0034] In specific use, the handle 8 installed on one side of the high-precision internal resistance tester 101 can be conveniently held.

[0035] The measured body is a cylindrical lithium battery 4, and the positive and negative electrodes of the battery are connected in parallel to the circuit copper foil 202 on the surface of the PCB board 201 through aluminum wires 203, wherein the battery cell, the aluminum wires 203 and the circuit copper foil 202 all have internal resistance, the high-precision internal resistance tester 101 is used to test the internal resistance of the positive and negative electrodes of the circuit copper foil 202 connected in parallel, the test value is recorded after the test, and the internal resistance value of other strings is compared, for example, the test value of each string is 4 mΩ, one of the strings is 4.3 mΩ, and whether the aluminum wires 203 have false welding or missing welding is checked, according to the principle of the internal resistance parallel connection formula: (R1*R2) / (R1+R2), the more the parallel resistances are, the smaller the resistance value is, and the smaller the relative resistance difference is, the test resistance difference is compared, and whether the aluminum wires 203 have false welding or missing welding is quickly known, and the single aluminum wire 203 checking is optimized to single parallel checking, so that the detection efficiency is greatly improved.

[0036] The content not described in detail in the specification belongs to the prior art known to those skilled in the art, although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick detection mechanism for battery aluminum wire, characterized in that, Include: Detection assembly (1), the detection assembly (1) is composed of high-precision internal resistance tester (101), the surface of high-precision internal resistance tester (101) is provided with wiring port (102), the surface of high-precision internal resistance tester (101) is installed with adjusting knob (103), the side of adjusting knob (103) is equipped with display screen (104), the inside of wiring port (102) is inserted with test pen (105); Connecting assembly (2), the connecting assembly (2) includes PCB board (201), the surface of PCB board (201) is installed with circuit copper foil (202), the surface of circuit copper foil (202) is also installed with aluminum wire (203), and the aluminum wire (203) is arranged on the surface of PCB board (201); Glass fiber plate (3), the surface of glass fiber plate (3) is placed with cylindrical lithium battery (4); Placement box (5), the high-precision internal resistance tester (101) is stored in the inside of placement box (5).

2. A rapid detection mechanism for battery aluminum wire according to claim 1, characterized in that: The top of the placement box (5) is hinged with a box cover (51), and the inside of the placement box (5) and the box cover (51) is installed with a sponge lining (52).

3. A rapid detection mechanism for battery aluminum wire according to claim 2, characterized in that: The surface of the sponge lining (52) is provided with a placing groove (53), and the high-precision internal resistance tester (101) and the test pen (105) are placed in the placing groove (53) respectively.

4. A rapid detection mechanism for battery aluminum wire according to claim 2, characterized in that: The surface of the placement box (5) is installed with a lock catch (6), one side of the box cover (51) is installed with a hook (7), and the lock catch (6) is buckled with the hook (7).

5. The rapid detection mechanism for battery aluminum wire according to claim 1, characterized in that: The side of the high-precision internal resistance tester (101) is also installed with a handle (8).

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