Storage battery short circuit detection and butt welding quality detection combined tool

Abstract

The utility model relates to a short circuit detection and butt welding quality detection combined tool for a storage battery. Belongs to the technical field of lead-acid storage batteries. The utility model mainly solves the problems of low equipment utilization rate, large occupied area and the like due to the need of two pieces of detection equipment for short circuit and butt welding quality detection. The device is mainly characterized by comprising a transverse telescopic cylinder, a longitudinal telescopic cylinder, an electrode stand, a short circuit detection electrode and a butt welding quality detection electrode, the transverse telescopic air cylinder is transversely arranged on the inner side of the electrode stand, the longitudinal telescopic air cylinder is longitudinally arranged above the electrode stand, the electrode stand is connected with the telescopic ends of the transverse telescopic air cylinder and the longitudinal telescopic air cylinder, the butt welding quality detection electrode is installed in the electrode stand through a first guide rod, and the short circuit detection electrode is installed in the electrode stand through a second guide rod. The utility model has the characteristics of realizing short circuit detection and large current detection functions by one device, improving the utilization rate of the device and reducing the occupied area of the device, and is mainly used for detecting the short circuit and the butt welding quality after the plate group enters the groove and is subjected to butt welding in the storage battery assembly process.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery technology, specifically relating to a combined tooling for battery short-circuit detection and welding quality inspection. Background Technology

[0002] In the lead-acid battery assembly process, after the electrode groups are placed into the tank and welded, they need to go through a short-circuit tester and a welding quality tester to perform short-circuit testing and welding quality testing, and to check for hard faults in the battery assembly process.

[0003] The purpose of short-circuit detection is to detect whether there is a short circuit between the positive and negative electrodes within the electrode group. Its working principle is to apply a high voltage of approximately 1.5KV between the positive and negative busbars of the same cell and monitor the leakage current value. Before the battery undergoes acid formation, the positive and negative electrodes of the same cell are separated by a separator, resulting in extremely high internal resistance. According to I=U / R, when the short-circuit detection current value is greater than the standard value, it indicates that the internal resistance R between the positive and negative electrodes of the electrode group is small, suggesting an internal short circuit.

[0004] The purpose of butt welding quality inspection is to check whether the welding quality of the butt joint is good. The working principle is: apply a current of about 40A to the busbars (adjacent cells) on both sides of the butt joint and monitor the voltage value. According to U=I*R, when the voltage on both sides of the butt joint is higher than the standard value, it proves that the internal resistance R of the butt joint is too large and the welding is poor.

[0005] Currently, short-circuit testing and weld quality testing are performed on separate short-circuit testing and weld quality testing machines, which are arranged sequentially on the production line. In reality, the short-circuit testing and weld quality testing machines have essentially the same structural components, both consisting of a horizontal telescopic cylinder, electrode frame, electrodes, wires, and current / voltage monitoring units. The current equipment arrangement results in low utilization and a large footprint, which is detrimental to production line layout and efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a combined fixture for battery short-circuit detection and welding quality inspection. This single device performs both short-circuit detection and high-current detection functions, improving equipment utilization and reducing footprint.

[0007] The technical solution of this utility model is: a combined tooling for battery short-circuit detection and welding quality inspection, characterized in that it consists of a transverse telescopic cylinder, a longitudinal telescopic cylinder, an electrode frame, a short-circuit detection electrode, and a welding quality inspection electrode; wherein, the transverse telescopic cylinder is arranged laterally and connected to the inner side of the electrode frame, controlling the extension and retraction of the electrode frame; the longitudinal telescopic cylinder is arranged longitudinally and connected to the top of the electrode frame, controlling the raising and lowering of the electrode frame; the welding quality inspection electrode is mounted inside the electrode frame via a first guide rod; the short-circuit detection electrode is mounted inside the electrode frame via a second guide rod.

[0008] In the technical solution of this utility model, both the short-circuit detection electrode and the welding quality detection electrode are composed of an electrode fixing block and positive and negative electrodes; the electrode fixing block of the short-circuit detection electrode is installed on the second guide rod; and the welding quality detection electrode is installed on the first guide rod.

[0009] In the technical solution of this utility model, the electrode fixing blocks of the short-circuit detection electrode and the welding quality detection electrode are respectively provided with positive and negative electrode connecting wires that are connected to the positive and negative electrodes.

[0010] In the technical solution of this utility model, the positive and negative electrode connecting wires of the short-circuit detection electrode are connected to the current monitoring unit; the positive and negative electrode connecting wires of the welding quality detection electrode are connected to the voltage monitoring unit.

[0011] In the technical solution of this utility model, the second guide rod is a straight rod; the short-circuit detection electrode corresponds to the positive and negative busbars of the battery cell to be tested.

[0012] In the technical solution of this utility model, the first guide rod is two parallel straight rods; the welding quality detection electrode is correspondingly matched with the busbars on both sides of the welding point to be tested in the battery.

[0013] In the technical solution of this utility model, the second guide rod is parallel to the first guide rod; there are 6 short-circuit detection electrodes; and there are 5 welding quality detection electrodes.

[0014] In the technical solution of this utility model, the electrode holder is a rectangular frame; the two ends of the first guide rod and the second guide rod are fixed on the opposing frame rods inside the electrode holder.

[0015] The electrode holder described in the technical solution of this utility model is a U-shaped rectangular frame.

[0016] In the technical solution of this utility model, the welding quality detection electrode is fixed to the first guide rod by screws, and its position corresponds to the busbar; the short circuit detection electrode is fixed to the second guide rod by screws, and its position corresponds to the busbar.

[0017] This invention employs a combined tooling for battery short-circuit detection and weld quality detection, comprising a lateral telescopic cylinder, a longitudinal telescopic cylinder, an electrode frame, a short-circuit detection electrode, and a weld quality detection electrode. The lateral telescopic cylinder is horizontally positioned inside the electrode frame, and the longitudinal telescopic cylinder is vertically positioned above the electrode frame. The electrode frame is connected to the telescopic ends of the lateral and longitudinal telescopic cylinders. The weld quality detection electrode is mounted inside the electrode frame via a first guide rod, and the short-circuit detection electrode is mounted inside the electrode frame via a second guide rod. Therefore, when detecting a battery short circuit, the electrode frame is moved horizontally by the lateral telescopic cylinder. The short-circuit detection electrodes are positioned above the battery and aligned with the positive and negative busbars of each individual cell. A longitudinal telescopic cylinder moves the electrode holder downwards, and the two short-circuit detection electrodes in the same group contact the positive and negative busbars of the same cell to identify short-circuit faults in that cell. When testing the welding quality of the battery, the electrode holder is moved horizontally by a lateral telescopic cylinder, positioning the welding quality detection electrodes above the battery and aligned with the welding points (crossing the cell partition walls of the battery compartment). A longitudinal telescopic cylinder moves the electrode holder downwards, and the two welding quality detection electrodes in the same group contact the busbars on both sides of the welding point to identify welding faults at the welding point.

[0018] This utility model features a single device that performs both short-circuit detection and high-current detection, improving equipment utilization and reducing equipment footprint. It is mainly used for short-circuit and welding quality detection after the electrode groups are placed in the tank and welded during the lead-acid battery assembly process. Attached Figure Description

[0019] Figure 1 This is an attached view of the structural device of this utility model.

[0020] Figure 2 This is a front view of the welding quality inspection electrode and the short circuit detection electrode.

[0021] Reference numerals: 1- Lateral telescopic cylinder; 2-Electrode holder; 3-Short circuit detection electrode; 4-Butt welding quality detection electrode; 5-Longitudinal telescopic cylinder. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a combined tooling for battery short-circuit detection and welding quality inspection, which consists of a transverse telescopic cylinder 1, an electrode frame 2, a short-circuit detection electrode 3, a welding quality inspection electrode 4, and a longitudinal telescopic cylinder 5.

[0024] The lateral telescopic cylinder is positioned laterally inside the electrode holder, and the longitudinal telescopic cylinder is positioned longitudinally above the electrode holder. The lateral telescopic cylinder controls the extension and retraction of the electrode holder, while the longitudinal telescopic cylinder controls the raising and lowering of the electrode holder.

[0025] Electrode holder 2 is a U-shaped rectangular frame, including side frame rods and side frame rods on both sides. The side frame rods of electrode holder 2 are connected to the telescopic ends of the transverse telescopic cylinder 1 and the longitudinal telescopic cylinder 5, and the telescopic cylinders control the horizontal forward and backward movement and the vertical up and down movement.

[0026] The welding quality detection electrode 4 consists of an electrode fixing block and positive and negative electrodes. The electrode fixing block is equipped with positive and negative electrode connecting wires that are respectively connected to the positive and negative electrodes. During testing, the positive and negative electrode connecting wires of the welding quality detection electrode 4 are connected to the voltage monitoring unit. The first guide rod consists of two parallel straight rods. There are five welding quality detection electrodes 4, which are fixed to the first guide rods by the electrode fixing blocks and screws, corresponding to the busbars on both sides of the welding point to be tested on the battery. The two ends of the first guide rod are fixed to the opposite side frame rods inside the electrode holder 2.

[0027] The short-circuit detection electrode 3 consists of an electrode fixing block and positive and negative electrodes. The electrode fixing block has positive and negative electrode connecting wires that connect to the positive and negative electrodes respectively. During testing, the positive and negative electrode connecting wires of the short-circuit detection electrode 3 are connected to the current monitoring unit. The second guide rod is a straight rod. There are six short-circuit detection electrodes 3, which are fixed to the second guide rod by the electrode fixing blocks and screws, corresponding to the positive and negative busbars of the battery cell to be tested. The two ends of the second guide rod are fixed to the opposite side frame rods inside the electrode holder 2. The second guide rod is parallel to the first guide rod.

[0028] During welding quality inspection, the lateral telescopic cylinder 1 extends to the welding quality inspection position, and the welding quality inspection electrode 4 is positioned above the battery. Each electrode corresponds to one welding point (spanning the single-cell partition wall of the battery compartment), and the electrode position corresponds to the busbar. The telescopic cylinder 5 controls the electrode holder 2 to move downwards as a whole, so that the electrode contacts the busbar. A current of approximately 40A is applied between each pair of electrodes through a wire, and the voltage value is monitored to identify welding faults at the welding points. After the test, the telescopic cylinder 5 controls the electrode holder 2 to rise.

[0029] During short-circuit testing, the lateral telescopic cylinder 1 extends to the short-circuit testing position, with the short-circuit testing electrode 3 positioned above the battery. Each electrode corresponds to one cell in the battery, and the terminal position corresponds to the busbar. The telescopic cylinder 5 controls the electrode holder 2 to move downwards, bringing the terminals into contact with the busbar. A high voltage of approximately 1.5KV is applied between each pair of terminals via wires to monitor the leakage current and identify short-circuit faults. After the test, the telescopic cylinder 5 controls the electrode holder 2 to rise.

[0030] The lateral telescopic cylinder 1 retracts to its initial state, and the short circuit detection and welding quality inspection are completed.

Claims

1. A combined tooling for battery short-circuit detection and welding quality inspection, characterized in that: It is composed of a transverse telescopic cylinder (1), an electrode frame (2), a short-circuit detection electrode (3), a butt welding quality detection electrode (4), and a longitudinal telescopic cylinder (5); wherein, the transverse telescopic cylinder (1) is arranged transversely and connected to the inner side of the electrode frame (2); the longitudinal telescopic cylinder (5) is arranged longitudinally and connected to the upper part of the electrode frame (2); the electrode frame (2) is connected to the telescopic ends of the transverse telescopic cylinder (1) and the longitudinal telescopic cylinder (5); the butt welding quality detection electrode (4) is installed in the electrode frame (2) through a first guide rod; the short-circuit detection electrode (3) is installed in the electrode frame (2) through a second guide rod.

2. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 1, characterized in that: The short-circuit detection electrode (3) and the welding quality detection electrode (4) are both composed of an electrode fixing block and positive and negative electrodes; the electrode fixing block of the short-circuit detection electrode (3) is installed on the second guide rod; the welding quality detection electrode (4) is installed on the first guide rod.

3. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 2, characterized in that: The electrode fixing blocks of the short-circuit detection electrode (3) and the welding quality detection electrode (4) are each provided with positive and negative electrode connecting wires that are respectively connected to the positive and negative electrodes.

4. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 3, characterized in that: The positive and negative electrode connecting wires of the short-circuit detection electrode (3) are connected to the current monitoring unit; the positive and negative electrode connecting wires of the welding quality detection electrode (4) are connected to the voltage monitoring unit.

5. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 4, characterized in that: The second guide rod is a straight rod; the short-circuit detection electrode (3) corresponds to the positive and negative busbars of the cell to be tested in the battery.

6. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 5, characterized in that: The first guide rod consists of two parallel straight rods; the welding quality detection electrode (4) corresponds to the busbars on both sides of the welding point to be tested on the battery.

7. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 6, characterized in that: The second guide rod is parallel to the first guide rod; there are 6 short-circuit detection electrodes (3); there are 5 welding quality detection electrodes (4).

8. A combined tooling for battery short-circuit detection and welding quality inspection according to any one of claims 1-7, characterized in that: The electrode holder (2) is a rectangular frame; the two ends of the first guide rod and the second guide rod are fixed on the opposing frame rods inside the electrode holder (2).

9. The combined tooling for battery short-circuit detection and welding quality inspection according to claim 8, characterized in that: The electrode holder (2) is a U-shaped rectangular frame.

10. A combined tooling for battery short-circuit detection and welding quality inspection according to any one of claims 1-7 and 9, characterized in that: The welding quality detection electrode (4) is fixed to the first guide rod by screws, and its position corresponds to the busbar; the short circuit detection electrode (3) is fixed to the second guide rod by screws, and its position corresponds to the busbar.

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