Device for testing sealing performance of steel-shell cylindrical battery

Abstract

The utility model relates to the technical field of battery detection equipment, and discloses a steel shell cylindrical battery sealing performance testing device which comprises a bottom plate, a testing mechanism is arranged at the top end of the bottom plate and comprises an annular testing box body fixedly connected to the top wall of the bottom plate, and an annular observation window is arranged in the middle of the outer side of the annular testing box body. A battery placement lifting mechanism is fixedly connected to the center of the top wall of the bottom plate and comprises an annular battery placement rack arranged in the annular test box body. According to the utility model, the annular test box body structure design is adopted, the annular observation window is arranged in the middle of the outer side of the annular test box body, and the annular battery placement rack is arranged in cooperation with the annular test box body, so that a plurality of steel shell cylindrical batteries to be subjected to a sealing test can be placed in a single-row annular manner; compared with a rectangular test box body structure design with the same volume, the test structure can carry out more steel shell cylindrical battery sealing performance tests at a time.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection equipment, in particular to a sealing test device for a steel shell cylindrical battery. Background Art

[0002] Cylindrical batteries are primarily steel-cased cylindrical lithium iron phosphate batteries. These batteries are characterized by high capacity, high output voltage, excellent charge-discharge cycle performance, stable output voltage, high current discharge capability, electrochemical stability, safety during use (no combustion or explosion due to improper operation such as overcharging, overdischarging, or short-circuiting), a wide operating temperature range, and environmental friendliness. Currently, the production of steel-cased cylindrical batteries requires testing their sealing properties, which necessitates the use of a steel-cased cylindrical battery sealing tester.

[0003] The existing steel shell cylindrical battery sealing test device still has the following problems when in use: when the sealing test adopts the immersion test method, it is usually provided with a rectangular immersion box structure for immersion sealing test of the steel shell cylindrical battery. Since it is necessary to observe whether bubbles are generated, and bubbles are often generated for a short time and in small quantities, if steel shell cylindrical batteries are placed in multiple rows for immersion testing, when bubbles are generated, it is impossible to determine which steel shell cylindrical battery in which column of the multiple rows of steel shell cylindrical batteries has an airtightness problem. Therefore, multiple steel shell cylindrical batteries need to be placed in a single row for immersion testing. However, when testing a large number of steel shell cylindrical batteries, it seriously affects the test efficiency. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a sealing test device for steel-shell cylindrical batteries, which solves the problems raised in the background art.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steel shell cylindrical battery sealing test device, comprising a base plate, a testing mechanism is provided on the top of the base plate, the testing mechanism comprises an annular test box body fixedly connected to the top wall of the base plate, an annular observation window is provided in the middle part of the outer side of the annular test box body, a battery placement and lifting mechanism is fixedly connected to the center position of the top wall of the base plate, the battery placement and lifting mechanism comprises an annular battery placement rack provided in the annular test box body, and the annular battery placement rack and the annular test box body are arranged concentrically.

[0008] As a further solution of the present invention: mounting holes are opened between the upper and lower side walls at the four corners of the base plate, and four reinforcement blocks are fixedly connected at equal angles below the annular outer wall of the inner ring of the annular test box, and the bottom ends of the four reinforcement blocks are fixedly connected to the base plate.

[0009] As a further solution of the present invention: a plurality of limit placement holes are opened at equal angles between the upper and lower side walls of the annular battery placement rack, and the bottom wall of the annular battery placement rack is fixedly connected to two connecting plates at both ends of each limit placement hole opening, and the bottom ends of the two connecting plates are fixedly connected to the same battery bracket.

[0010] As a further solution of the present invention: the battery placement and lifting mechanism includes a hydraulic lifting mechanism, and the hydraulic lifting mechanism includes a hydraulic driving machine fixedly connected to the center position of the top wall of the bottom plate, the hydraulic driving machine and the annular test box are arranged concentrically, and a hydraulic driving shaft is provided at the top of the hydraulic driving machine, and the upper movable end of the hydraulic driving shaft is fixedly connected to a connecting frame, and each of the two ends of the bottom wall of the connecting frame is fixedly connected to a connecting seat, and the bottom ends of the two connecting seats are fixedly connected to the top of the annular battery placement frame.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. In the present invention, a ring-shaped test box structure is adopted, and a ring-shaped observation window is provided in the middle of the outer side of the ring-shaped test box. In addition, a ring-shaped battery placement rack is provided in conjunction with the ring-shaped test box, which can place multiple steel-shell cylindrical batteries to be tested for sealing in a single row. Compared with a rectangular test box structure design of the same volume, its test structure can perform more steel-shell cylindrical battery sealing tests at a time.

[0013] 2. In the present invention, a hydraulic lifting mechanism is provided at the center position of the annular test box body, and the hydraulic driving end at the top is fixedly connected to a connecting frame, and the connecting frame is connected to the annular battery placement rack via a connecting seat, so that the annular battery placement rack can be lifted and lowered. The hydraulic lifting mechanism is provided inside the annular test box body, does not occupy external space, and does not affect the sealing test work. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall three-dimensional Figure 1 ;

[0015] Figure 2 The overall three-dimensional Figure 2 ;

[0016] Figure 3 This is a three-dimensional diagram of the testing mechanism of the present utility model;

[0017] Figure 4 This is a three-dimensional diagram of the battery placement mechanism of the present utility model.

[0018] In the figure: 1. Base plate; 2. Annular test box; 3. Hydraulic drive mechanism; 4. Mounting hole; 5. Reinforcement block; 31. Hydraulic drive motor; 32. Hydraulic drive shaft; 33. Connecting frame; 34. Connecting seat; 35. Annular battery placement rack; 36. Limit placement hole; 37. Connecting plate; 38. Battery bracket. DETAILED DESCRIPTION

[0019] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] See also Figures 1 to 4In an embodiment of the utility model, a steel shell cylindrical battery sealing test device includes a base plate 1, and a testing mechanism is provided on the top of the base plate 1. The testing mechanism includes an annular test box 2 fixedly connected to the top wall of the base plate 1, and an annular observation window is provided in the middle part of the outer side of the annular test box 2. A battery placement lifting mechanism 3 is fixedly connected to the center position of the top wall of the base plate 1. The battery placement lifting mechanism 3 includes an annular battery placement rack 35 arranged in the annular test box 2. The annular battery placement rack 35 is concentrically arranged with the annular test box 2. It adopts an annular test box structure design, and an annular observation window is provided in the middle part of the outer side of the annular test box 2. In addition, an annular battery placement rack is provided in conjunction with its annular test box, which can place multiple steel shell cylindrical batteries to be tested for sealing in a single row in an annular manner. Compared with the rectangular test box structure design of the same volume, its test structure can perform more steel shell cylindrical battery sealing tests at a single time.

[0023] Mounting holes 4 are provided between the upper and lower side walls at the four corners of the base plate 1, and the base plate 1 can be fixedly installed on the corresponding work station through the four mounting holes 4 of the base plate 1 with mounting bolts. Four reinforcement blocks 5 are fixedly connected at equal angles to the lower annular outer wall of the inner ring of the annular test box 2. The bottom ends of the four reinforcement blocks 5 are fixedly connected to the base plate 1, which plays a role in reinforcing the connection between the annular test box 2 and the base plate 1.

[0024] A plurality of limit placement holes 36 are provided at equal angles between the upper and lower side walls of the annular battery placement rack 35. Two connecting plates 37 are fixedly connected to the bottom wall of the annular battery placement rack 35 and are located at both ends of the opening of each limit placement hole 36. The bottom ends of the two connecting plates 37 are fixedly connected to the same battery bracket 38. Steel-shell cylindrical batteries to be tested for sealing can be placed through the plurality of limit placement holes 36. The circumferential sides of the steel-shell cylindrical batteries are limited by the limit placement holes 36, and the bottom ends of the steel-shell cylindrical batteries are supported by the battery bracket 38.

[0025] The battery placement and lifting mechanism 3 includes a hydraulic lifting mechanism, and the hydraulic lifting mechanism includes a hydraulic driving machine 31 fixedly connected to the center position of the top wall of the base plate 1, the hydraulic driving machine 31 and the annular test box 2 are arranged concentrically, and a hydraulic driving shaft 32 is provided at the top of the hydraulic driving machine 31, and the upper movable end of the hydraulic driving shaft 32 is fixedly connected to a connecting frame 33, and each end of the bottom wall of the connecting frame 33 is fixedly connected to a connecting seat 34, and the bottom ends of the two connecting seats 34 are fixedly connected to the top of the annular battery placement frame 35. A hydraulic lifting mechanism is provided at the center position of the annular test box 2, and the hydraulic driving end at the top is fixedly connected to the connecting frame 33. The connecting frame 33 is connected to the annular battery placement frame via the connecting seat 34, and the annular battery placement frame 35 can be lifted and lowered. The hydraulic lifting mechanism is arranged on the inner side of the annular test box 2, does not occupy external space, and does not affect the sealing test work.

[0026] The working principle of the present invention is as follows: an appropriate amount of water is injected into the annular test box 2, and at this time, the steel shell cylindrical battery to be tested for sealing can be placed through multiple limit placement holes 36, and the circumference of the steel shell cylindrical battery is limited by the limit placement holes 36, and the bottom end of the steel shell cylindrical battery is supported by the battery bracket 38. A hydraulic lifting mechanism is provided at the center position of the annular test box 2, and the hydraulic drive end at the top is fixedly connected to the connecting frame 33, and the connecting frame 33 is connected to the annular battery placement rack via the connecting seat 34, and the annular battery placement rack 35 can be lowered to immerse multiple steel shell cylindrical batteries in water. Observe whether there are bubbles. If there is a leak in the battery, the liquid will enter the battery and the gas inside the battery will escape to form bubbles, completing the sealing test of the steel shell cylindrical battery. Because it adopts a ring-shaped test box structure design, and a ring-shaped observation window is provided in the middle of the outer side of the ring-shaped test box 2, in addition, a ring-shaped battery placement rack is provided in conjunction with its ring-shaped test box, which can place multiple steel shell cylindrical batteries to be tested for sealing in a single row in a ring. Compared with the rectangular test box structure design of the same volume, its test structure can perform more steel shell cylindrical battery sealing tests at a single time.

[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing test device for a steel-shell cylindrical battery, comprising a bottom plate (1), wherein a testing mechanism is provided on the top of the bottom plate (1); Its characteristics are: The testing mechanism comprises an annular testing box (2) fixedly connected to the top wall of the base plate (1); an annular observation window is provided in the middle of the outer side of the annular testing box (2); and a battery placement lifting mechanism (3) is fixedly connected to the center of the top wall of the base plate (1); The battery placement and lifting mechanism (3) comprises an annular battery placement rack (35) arranged in the annular test box (2), wherein the annular battery placement rack (35) and the annular test box (2) are arranged concentrically; The battery placement and lifting mechanism (3) comprises a hydraulic lifting mechanism, and the hydraulic lifting mechanism comprises a hydraulic driving machine (31) fixedly connected to the center position of the top wall of the base plate (1), and the hydraulic driving machine (31) and the annular test box (2) are arranged concentrically.

2. The sealing test device for a steel-shell cylindrical battery according to claim 1, characterized in that: Mounting holes (4) are provided between the upper and lower side walls at the four corners of the bottom plate (1).

3. The sealing test device for a steel-shell cylindrical battery according to claim 1, characterized in that: Four reinforcement blocks (5) are fixedly connected at equal angles to the lower side of the annular outer side wall of the inner ring of the annular test box (2), and the bottom ends of the four reinforcement blocks (5) are fixedly connected to the bottom plate (1).

4. The sealing test device for a steel-shell cylindrical battery according to claim 1, characterized in that: A plurality of position limiting placement holes (36) are provided between the upper and lower side walls of the annular battery placement rack (35) at equal angles.

5. The sealing test device for a steel-shell cylindrical battery according to claim 1, characterized in that: The bottom wall of the annular battery placement rack (35) is fixedly connected to two connecting plates (37) at both ends of the opening of each limiting placement hole (36), and the bottom ends of the two connecting plates (37) are fixedly connected to the same battery bracket (38).

6. The sealing test device for a steel-shell cylindrical battery according to claim 1, characterized in that: A hydraulic drive shaft (32) is provided at the top of the hydraulic drive machine (31), and a connecting frame (33) is fixedly connected to the upper movable end of the hydraulic drive shaft (32).

7. The sealing test device for steel-shell cylindrical batteries according to claim 6, characterized in that: The two ends of the bottom wall of the connecting frame (33) are each fixedly connected to a connecting seat (34), and the bottom ends of the two connecting seats (34) are fixedly connected to the top end of the annular battery placement frame (35).

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