An on-line large-current discharge detection tool for battery production and a quick change type probe

Abstract

This invention discloses an online high-current discharge testing fixture and a quick-change probe for battery production. Two types of probes are available for high-current discharge testing of batteries with tapered terminals and batteries with screw terminals, respectively. Both probes can be quickly and easily installed onto the testing probe arm via threads. The screw terminal battery testing probe features a circular recessed hole at the center of its bottom, allowing direct high-current discharge testing of screw terminal batteries. This eliminates the need for manual installation and removal of the discharge adapter copper ring for each battery, as required by traditional testing probes, thus improving production and testing efficiency and saving labor costs.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery manufacturing technology, specifically relating to a tooling and quick-change probe for online high-current discharge detection in battery production. Background Technology

[0002] Lead-acid batteries are widely used in transportation, communication, and energy storage due to their excellent performance, safety, reliability, and low cost. After battery manufacturing, a high-current discharge test is required before battery formation and packaging. This test simulates the instantaneous discharge current and duration during vehicle startup to verify the battery's ability to discharge normally. By detecting the battery's open-circuit voltage and the termination voltage at the end of discharge, internal defects can be detected or amplified, allowing defective batteries to be rejected and ensuring the quality of batteries leaving the factory.

[0003] Battery terminals come in various types, including not only the common tapered terminals but also angled and screw-type terminals. Current online high-current detection probes in battery production are cylindrical copper probes, which are convenient for discharging tapered terminal batteries. However, screw-terminal batteries have external threads that extend upwards to the upper surface of the terminal post, resulting in an uneven surface. Existing probes cannot make seamless, tight contact with the screw terminal surface, making direct testing impossible. A pair of copper ring fixtures is required for this purpose. Before testing, the copper rings must be manually fitted onto the two terminals of the screw-terminal battery, with the lower part of the ring contacting the base of the terminal. During testing, the probe contacts the upper part of the copper ring to achieve high-current discharge detection. After the discharge test, the copper rings are manually removed. This method is inconvenient for high-current detection of screw-terminal batteries, significantly reduces production efficiency, and increases labor costs. Summary of the Invention

[0004] The purpose of this invention is to provide an online high-current discharge detection fixture and a quick-change probe for battery production, which replaces the copper ring fixture for screw terminal battery installation and the method of switching and detecting, thereby improving the efficiency of high-current discharge detection of screw terminal batteries and reducing the labor cost in the battery manufacturing process.

[0005] The technical solution of this utility model is: an online high-current discharge testing fixture for battery production, including a high-current battery discharge testing device. The high-current battery discharge testing device includes a high-current charge / discharge machine, a frame, two testing probes, and two types of testing probes. The frame is located on the side of the roller conveyor of the battery production line. There is a fixing plate on the frame for mounting the testing probes. During testing, the fixing plate is located directly above the roller conveyor of the battery production line. The fixing plate is provided with an adjustment hole for adjusting the distance between the two testing probes. The upper ends of the two testing probes are mounted on the fixing plate through the adjustment hole. The two testing probes are connected to the positive and negative terminals of the high-current charge / discharge machine by two cables. The testing probe is a cylindrical rod with an internal threaded hole at the center of the bottom of the cylindrical rod. The two types of testing probes include a short cylindrical rod and a testing head connected to the lower part of the short cylindrical rod. The outer wall of the short cylindrical rod has external threads. The testing head of one type of testing probe has a cylindrical structure, and the testing head of the other type of testing probe has a bottom cylindrical structure. The testing probes are detachably mounted in the internal threaded hole of the testing probe via the short cylindrical rod.

[0006] Each type of detection probe has two parts, with one detection probe corresponding to one detection probe arm.

[0007] The fixing plate can be adjusted in three directions: X, Y, and Z.

[0008] During testing, adjust the position of the fixing plate and the distance between the two testing probes so that the two testing probes are directly above the positive and negative terminals of the battery to be tested, respectively.

[0009] When the positive and negative terminals of the battery to be tested are tapered terminals, the test head adopts a cylindrical structure with a diameter of 25~40mm and a length of 50mm; when the positive and negative terminals of the battery to be tested are screw terminals, the bottom of the test head has a cylindrical structure with an outer diameter of 25~40mm, an inner diameter of 16~20mm, and an inner diameter larger than the screw diameter of the screw terminal. The depth of the cylinder is 20~30mm, which is greater than the height of the screw terminal.

[0010] When testing the screw terminal, the lower end face of the cylinder abuts against the lead platform that surrounds the screw terminal; inside the battery, below the lead platform, it is fused together with the positive and negative terminals of the battery. The cylinder abuts against the lead platform, thus connecting the battery and the charger / discharger into a single circuit.

[0011] When testing tapered terminals, the diameter of the cylindrical base of the probe should be greater than or equal to the diameter of the top surface of the tapered terminal.

[0012] The detection probe and detection arm are made of copper. Copper material has low internal resistance, excellent conductivity during high current discharge, and good heat dissipation.

[0013] The diameter of the cylindrical rod of the detection probe is 25~40mm.

[0014] A quick-change probe includes a short cylindrical rod and a detection head connected to the lower part of the short cylindrical rod. The outer wall of the short cylindrical rod has external threads, and the detection head has a cylindrical or cylindrical structure. The short cylindrical rod can be detachably installed in the internal threaded hole of the detection probe arm.

[0015] A quick-change probe fixture for online high-current discharge detection in the production of batteries with tapered terminals and screw terminals includes two types of copper cylindrical detection probe fixtures. The detection probe fixtures are made of copper material, which has low resistivity and good conductivity.

[0016] Depending on the type of battery terminals produced, appropriate probe fixtures are selected and mounted on the two probe arms of the charge / discharge machine. During testing, both probe arms are pressed down simultaneously, contacting and connecting with the positive and negative terminals of the battery respectively to achieve battery discharge testing. After testing, the two probe arms retract upwards, disconnecting the contact, and the battery moves backward with the roller conveyor. When performing high-current discharge testing on batteries with tapered terminals, the lower surface of the cylindrical testing probe contacts the upper surface of the tapered terminal; when performing high-current discharge testing on batteries with screw terminals, the screw terminal is inserted into the circular recess at the bottom of the testing probe, and the lower surface of the probe contacts the lead platform at the root of the screw terminal, thus performing high-current discharge testing without the need for a cylindrical copper ring for discharge transfer.

[0017] This utility model features a simple structure and convenient operation. It is suitable for rapid replacement and testing of high-current discharge detection of batteries with screw terminals and other different types of terminals (including coarse and fine conical terminals and angle terminals). It can effectively improve the efficiency of high-current detection of screw terminal batteries and reduce the labor cost in the battery manufacturing process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of online high-current discharge testing during the production of tapered terminal batteries;

[0019] Figure 2 This is a schematic diagram of online high-current discharge testing in the production of screw-terminal batteries;

[0020] Figure 3 These are different views of the tooling for the conical terminal detection probe and the screw terminal battery detection probe of this utility model, as well as the detection probe arm used in conjunction with them;

[0021] Figure 4 This is a schematic diagram of the structure of the quick-change probe of this utility model;

[0022] Figure 5 This is a schematic diagram of the adapter copper ring used in traditional testing methods;

[0023] In the diagram: 1. Part of the high-current discharge battery testing equipment; 2. Conical terminal battery; 2-1. Conical positive terminal of the battery; 2-2. Conical negative terminal of the battery; 3. Screw terminal battery; 3-1. Screw terminals of the battery (positive and negative); 3-2. Screw terminal of the battery (negative); 3-3. Lead platform at the base of the positive screw terminal; 3-4. Lead platform at the base of the negative screw terminal; 4. Conical terminal battery testing probe; 4-1. Top screw of the conical terminal battery testing probe; 5. Screw terminal battery testing probe; 5-1. Top screw of the screw terminal battery testing probe; 5-2. Circular concave hole; 6. Testing probe arm; 6-1. Screw hole at the bottom of the testing probe arm; 7. Adapter copper ring used in traditional testing methods; 8. Roller conveyor of the battery production line. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] like Figure 1-3 This utility model includes two pairs of conical terminal battery detection probes 4, two pairs of screw terminal battery detection probes 5, and a pair of detection probe arms 6. The frame 1 has a fixed plate 101 that can be adjusted in three directions (X, Y, and Z). During testing, the fixed plate 101 is positioned directly above the roller conveyor 8 of the battery production line. The fixed plate 101 has adjustment holes for adjusting the distance between the two detection probe arms. The upper ends of the two detection probe arms are mounted on the fixed plate 101 through the adjustment holes to facilitate the testing of batteries of different sizes.

[0026] The conical terminal battery testing probe 4 is a cylindrical copper rod with a diameter of 20~40mm; the top of the testing probe has a screw for rotating and installing the testing probe onto the testing probe arm 6; the bottom of the testing probe is a solid structure and is flat.

[0027] The screw terminal battery detection probe 5 is a cylindrical copper rod with a diameter of 20~40mm; the top of the copper rod has a screw for rotating the detection probe onto the detection probe arm 6; the bottom of the detection probe has a circular concave hole with a diameter of 14~16mm and a depth of 18~30mm.

[0028] The detection probe arm 6 is made of copper, which provides good conductivity and rapid heat dissipation during high-current discharge. The detection probe arm 6 is cylindrical with a diameter of 20-40mm. A screw hole is located at the center of the bottom of the detection probe arm 6 for quick installation of the detection probe, enabling rapid model changeover. The detection probes include two pairs of tapered terminal battery detection probes 4 and two pairs of screw terminal battery detection probes 5.

[0029] When in use, when the battery runs on the production line roller conveyor 8 to the high current detection station, the positioning blocking cylinder on the roller conveyor will fix the battery. The two detection probes move downward and press against the top surfaces of the positive and negative terminals of the battery respectively. The high current detection equipment and the battery form a battery discharge circuit. The discharge machine performs a high current discharge test on the battery according to the set discharge process. The quality of the battery is determined according to the discharge termination voltage of each battery.

[0030] Traditional detection probes are made of copper cylinders (such as...) Figure 5 As shown, the bottom of a tapered terminal battery is a flat plane, and the top of the terminal is also a flat surface, allowing for direct high-current discharge testing. However, screw-terminal batteries have threads that extend upwards to the upper surface of the terminal post, resulting in an uneven upper surface. This prevents the bottom of the testing probe from making seamless, tight contact with the upper surface of the screw terminal, making direct testing impossible. A pair of copper rings is required for conversion testing. During testing, before the battery reaches the testing station, a worker manually places a pair of copper rings 7 onto the two screw terminals 3-1 and 3-2 of the screw-terminal battery 3, with the bottom of the two copper rings contacting the lead plates 3-3 and 3-4 at the roots of the positive and negative screw terminals. Then, the testing probe moves downwards to press against the top of the copper rings, achieving high-current discharge testing of the screw-terminal battery. After the discharge test, the two copper rings are manually removed from the positive and negative screw terminals. Traditional testing methods are inconvenient for high-current testing of screw-terminal batteries, significantly reducing production efficiency and increasing labor costs.

[0031] like Figure 4 In this invention, two types of detection probes 4 and 5 are used: a conical terminal battery detection probe 4 and a screw terminal battery detection probe 5, which are respectively used for high-current discharge detection of conical terminal batteries 2 and screw terminal batteries 3. Both detection probes 4 and 5 are cylindrical copper rods with a screw 4-1 and 5-1 at the top, respectively, and have the same outer diameter. The bottom of detection probe 4 is a solid structure, and the bottom of detection probe 5 has a circular recessed hole 5-2. A detection probe arm 6 for mounting the new detection probes has a screw hole 6-1 at its bottom, the diameter of which matches the screw 4-1 and 5-1 of detection probes 4 and 5.

[0032] Before using the detection head of this utility model for online high-current testing of batteries, workers select a pair of detection probes 4 or 5 according to the type of battery terminals being produced and install them onto two detection arms 6. When producing conical terminal batteries, the conical terminal battery detection probe 4 is rotated and installed onto the probe arm. During testing, the probe arm is pressed down, and the pair of detection probes 4 press against the top surfaces of the positive and negative conical terminals 2-1 and 2-2 of the conical terminal battery 2, respectively, forming a discharge circuit, thereby completing the high-current discharge test. When producing screw terminal batteries, the detection probe 4 is rotated off and then the detection probe 5 is rotated and installed onto the detection arm 6 for quick type change. The top screw 5-1 of the screw terminal battery detection probe is connected to the bottom screw hole 6-1 of the detection arm, and the bottom circular concave hole 5-2 of the screw terminal battery detection probe makes the detection probe 5 form a cylindrical structure. When testing the screw terminal battery, a pair of test probes 5 press against the positive and negative screw terminals 3-1 and 3-2 of the screw terminal battery 3, respectively. The circular concave hole 5-2 at the bottom of the test probe 5 is offset from the terminal post of the screw terminal. The annular surface at the bottom of the test probe 5 presses against the lead platform 3-3 and 3-4 at the root of the positive and negative screw terminals, forming a discharge circuit, thereby completing the high current discharge test.

[0033] The two detection probes of this invention enable rapid switching between different types of terminal batteries during high-current discharge testing. Compared with traditional screw terminal battery testing methods, this method offers higher production efficiency and reduces labor costs in the manufacturing process.

Claims

1. A high-current discharge detection fixture for battery production, characterized in that: The device includes a high-current discharge battery testing equipment, which comprises a high-current charge / discharge machine, a frame (1), two testing probes, and two types of testing probes. The frame is located on the side of the roller conveyor (8) of the battery production line. The frame (1) has a fixing plate (101) for mounting the testing probes. During testing, the fixing plate (101) is located directly above the roller conveyor (8) of the battery production line. The fixing plate (101) is provided with adjustment holes for adjusting the distance between the two testing probes. The upper ends of the two testing probes are adjusted... The hole is installed on the fixed plate (101), and the two detection probes are connected to the positive and negative terminals of the high current charge and discharge machine by two cables; the detection probe is a cylindrical rod, and an internal thread hole is opened at the center of the bottom of the cylindrical rod; the two detection probes include a short cylindrical rod and a detection head connected to the lower part of the short cylindrical rod. The outer wall of the short cylindrical rod has external threads. The detection head of one detection probe is a cylindrical structure, and the detection head of the other detection probe is a cylindrical structure; the detection probe can be detachably installed in the internal thread hole of the detection probe (6) through the short cylindrical rod.

2. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: Each type of detection probe has two parts, with one detection probe corresponding to one detection probe arm.

3. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: The fixed plate (101) can be adjusted in three directions: XYZ.

4. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: During testing, adjust the position of the fixing plate (101) and the distance between the two testing probes so that the two testing probes (6) are located directly above the positive and negative terminals of the battery to be tested.

5. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: When the positive and negative terminals of the battery to be tested are tapered terminals, the testing head adopts a cylindrical structure with a diameter of 25~40mm and a length of 50mm; when the positive and negative terminals of the battery to be tested are screw terminals, the testing head adopts a cylindrical structure with an outer diameter of 25~40mm, an inner diameter of 16~20mm, and an inner diameter larger than the screw diameter of the screw terminal. The cylinder depth is 20~30mm, which is greater than the height of the screw terminal.

6. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: When inspecting the screw terminal, the lower end face of the cylinder abuts against the lead platform that surrounds the screw rod of the screw terminal; When testing tapered terminals, the diameter of the cylindrical base of the probe should be greater than or equal to the diameter of the top surface of the tapered terminal.

7. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: The detection probe and detection arm are made of copper.

8. The online high-current discharge detection fixture for battery production according to claim 1, characterized in that: The diameter of the cylindrical rod of the detection probe is 25~40mm.

9. A quick-change probe, characterized in that: It includes a short cylindrical rod and a detection head connected to the lower part of the short cylindrical rod. The outer wall of the short cylindrical rod has external threads. The detection head is a cylindrical or cylindrical structure. The short cylindrical rod can be detachably installed in the internal threaded hole of the detection probe arm (6).

Images