Cylindrical lithium ion battery air tightness test fixture
The cylindrical lithium-ion battery airtightness test fixture addresses the issue of inaccurate testing by incorporating a detection mechanism to identify gas leaks, ensuring precise air-tightness evaluation.
Patent Information
- Application Number
- CN202420712503.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-08
AI Technical Summary
Current cylindrical lithium-ion battery airtightness test fixtures lack gas leakage detection measures, leading to inaccurate test data during air-tightness testing.
A cylindrical lithium-ion battery airtightness test fixture equipped with an air tightness detection mechanism, comprising a base, placement mechanism, and air pump, which includes a pressing block, detection meter, and detection tube to detect gas leaks during the testing process.
Enables accurate air-tightness testing by detecting gas leaks through the gap between the pressing block and placement platform, ensuring reliable test results.
Smart Images
Figure CN222144438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to cylindrical lithium batteries, in particular to an airtightness testing fixture for cylindrical lithium-ion batteries. Background Art
[0002] Cylindrical lithium battery is a kind of battery that uses lithium metal or lithium alloy as positive / negative electrode material and non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996. Its safety, specific capacity, self-discharge rate and performance-price ratio are better than lithium ion batteries. When performing airtightness testing on cylindrical lithium batteries, an airtightness test fixture is required. Therefore, there is an urgent need for an airtightness test fixture for cylindrical lithium ion batteries.
[0003] The cylindrical lithium-ion battery air-tightness test fixture currently in use does not have any gas leakage detection measures on the outside of the device when performing air-tightness testing on cylindrical lithium batteries, resulting in inaccurate air-tightness test data. Utility Model Content
[0004] The purpose of the utility model is to provide a cylindrical lithium-ion battery airtightness test fixture to solve the problem of inaccurate airtightness test data due to the lack of gas leakage detection measures outside the device when performing airtightness test on cylindrical lithium batteries in the currently used cylindrical lithium-ion battery airtightness test fixture proposed in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cylindrical lithium-ion battery airtightness test fixture, comprising a base, a placement mechanism and an airtightness detection mechanism, an air pump is installed on the surface of the base, the placement mechanism is screwed to the top of the base, and a lithium battery is placed on the inner wall of the placement mechanism, columns are welded on both sides of the top of the base, and an operating table is welded on the top of the columns, a control panel is installed on the surface of the operating table, and cylinders are installed on both sides of the top of the operating table, lifting rods are installed on both sides of the bottom end of the operating table, and a lifting platform is installed at the bottom end of the lifting rod, the airtightness detection mechanism is screwed to the bottom end of the lifting platform, the airtightness detection mechanism comprises a pressing block, a fixing rod, a detection meter, a detection tube and a detection head, the pressing block is screwed to the bottom end of the lifting platform, the fixing rods are screwed on both sides of the top of the pressing block, and a detection meter is installed on the surface of the pressing block, the bottom end of the detection meter is connected to the detection tube, and the bottom end of the detection tube is provided with a detection head.
[0006] Preferably, the placement mechanism includes a placement table, a placement groove, a connecting seat and a fixing nut, the placement table is screwed to the top of the base, the inner wall of the placement table is provided with a placement groove, and connecting seats are welded on both sides of the front end of the placement table, and a fixing nut is installed at the front end of the connecting seat.
[0007] Preferably, the fixing nut and the connecting seat are threadedly connected, and the inner wall of the fixing nut and the outer wall of the connecting seat are both threaded.
[0008] Preferably, the lifting platform and the operating platform form a lifting structure through lifting rods, and the lifting rods are symmetrically arranged with the central axis of the lifting platform as the axis.
[0009] Preferably, the pressing block is threadedly connected to the lifting platform via a fixing rod, and the outer wall of the fixing rod and the inner wall of the lifting platform are both threadedly arranged.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] 1. This cylindrical lithium-ion battery air tightness test fixture is provided with an air tightness detection mechanism, so that when the cylindrical lithium battery is tested for air tightness through the device, the lifting rod is driven by the cylinder to drive the lifting platform and the pressing block in the air tightness detection mechanism to be pressed down, and the placement platform in the placement mechanism is inflated by the air pump, so that the lithium battery can be tested for air tightness. If the air tightness of the lithium battery is not good, the gas will leak through the gap between the pressing block and the placement platform, which can be detected by the detection head in the air tightness detection mechanism and transmitted to the detection meter through the detection tube. The rotation of the pointer of the detection meter can determine whether there is a gas leak;
[0012] 2. The cylindrical lithium-ion battery air tightness test fixture has a placement mechanism, so that during installation, the air pump pipeline can be fixed and tightened with the connecting seat at the front end of the placement table through the fixing nut in the placement mechanism. The installation steps are simple and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a front view of the utility model;
[0014] Figure 2 This is a top view of the parts diagram of the placement mechanism of the utility model;
[0015] Figure 3 This is a parts diagram of the air tightness detection mechanism of the utility model.
[0016] In the figure: 1. base; 2. air pump; 3. placement mechanism; 301. placement table; 302. placement slot; 303. connection seat; 304. fixing nut; 4. lithium battery; 5. column; 6. operating table; 7. control panel; 8. cylinder; 9. lifting rod; 10. lifting platform; 11. air tightness detection mechanism; 1101. pressure block; 1102. fixing rod; 1103. detection table; 1104. detection tube; 1105. detection head. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1-3 The utility model provides a technical solution: a cylindrical lithium-ion battery airtightness test fixture, comprising a base 1, a placement mechanism 3 and an airtightness detection mechanism 11, an air pump 2 is installed on the surface of the base 1, the placement mechanism 3 is screwed to the top of the base 1, the placement mechanism 3 comprises a placement table 301, a placement groove 302, a connection seat 303 and a fixing nut 304, the placement table 301 is screwed to the top of the base 1, the inner wall of the placement table 301 is provided with a placement groove 302, and both sides of the front end of the placement table 301 are welded A connecting base 303, a fixing nut 304 is installed at the front end of the connecting base 303, the fixing nut 304 and the connecting base 303 are threadedly connected, and the inner wall of the fixing nut 304 and the outer wall of the connecting base 303 are both threadedly arranged, and a lithium battery 4 is placed on the inner wall of the placement mechanism 3. Through the arranged placement mechanism 3, it is convenient to fix and tighten the pipeline of the air pump 2 to the connecting base 303 at the front end of the placement platform 3 through the fixing nut 304 in the placement mechanism 3 during installation. The installation steps are simple and easy to install.
[0019] The top of the base 1 is welded with columns 5 on both sides, and the top of the columns 5 is welded with an operating table 6, a control panel 7 is installed on the surface of the operating table 6, and cylinders 8 are installed on both sides of the top of the operating table 6, and lifting rods 9 are installed on both sides of the bottom of the operating table 6, and a lifting platform 10 is installed at the bottom of the lifting rod 9. The lifting platform 10 forms a lifting structure with the operating table 6 through the lifting rod 9, and the lifting rod 9 is symmetrically arranged with the central axis of the lifting platform 10 as the axis, and the airtightness detection mechanism 11 is screwed The airtightness detection mechanism 11 comprises a pressing block 1101, a fixing rod 1102, a detection gauge 1103, a detection tube 1104 and a detection head 1105. The pressing block 1101 is screwed to the bottom end of the lifting platform 10. The fixing rod 1102 is screwed to both sides of the top of the pressing block 1101. The detection gauge 1103 is installed on the surface of the pressing block 1101. The bottom end of the detection gauge 1103 is connected to the detection tube 1104. The detection tube 1104 is connected to the bottom end of the lifting platform 10. A detection head 1105 is provided at the bottom end of 104, the pressure block 1101 is threadedly connected to the lifting platform 10 through the fixing rod 1102, and the outer wall of the fixing rod 1102 and the inner wall of the lifting platform 10 are both threaded. Through the set airtightness detection mechanism 11, it is convenient to use the device to perform airtightness detection on the cylindrical lithium battery 4. The lifting rod 9 is driven by the cylinder 8 to drive the lifting platform 10 and the pressure block 1101 in the airtightness detection mechanism 11 to be pressed down, and the placement table 301 in the placement mechanism 3 is inflated by the air pump 2, so that the lithium battery 4 can be tested for airtightness. If the airtightness of the lithium battery 4 is not good, the gas will leak through the gap between the pressure block 1101 and the placement table 301, which can be detected by the detection head 1105 in the airtightness detection mechanism 11 and transmitted to the detection meter 1103 through the detection tube 1104. The pointer of the detection meter 1103 rotates to determine whether there is a gas leak.
[0020] Working principle: When in use, first fix and tighten the pipeline of the air pump 2 with the connecting seat 303 at the front end of the placement table 301 through the fixing nut 304 in the placement mechanism 3. The installation steps are simple and easy to install. Then place the lithium battery 4 in the placement groove 302 of the placement table 301, and drive the lifting rod 9 through the cylinder 8 to drive the lifting platform 10 and the pressing block 1101 in the air tightness detection mechanism 11 to press down, and inflate the placement table 301 in the placement mechanism 3 through the air pump 2, so as to perform an air tightness test on the lithium battery 4. If the air tightness of the lithium battery 4 is not good, the gas will leak through the gap between the pressing block 1101 and the placement table 301, which can be detected by the detection head 1105 in the air tightness detection mechanism 11 and transmitted to the detection meter 1103 through the detection tube 1104. The pointer of the detection meter 1103 rotates to determine whether there is a gas leakage. In this way, the operation process of a cylindrical lithium-ion battery air tightness test fixture is completed.
[0021] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cylindrical lithium-ion battery airtightness test fixture, characterized in that: The invention comprises a base (1), a placement mechanism (3) and an airtightness detection mechanism (11); an air pump (2) is installed on the surface of the base (1); the placement mechanism (3) is screwed to the top of the base (1); a lithium battery (4) is placed on the inner wall of the placement mechanism (3); columns (5) are welded on both sides of the top of the base (1); an operating table (6) is welded on the top of the columns (5); a control panel (7) is installed on the surface of the operating table (6); a cylinder (8) is installed on both sides of the top of the operating table (6); lifting rods (9) are installed on both sides of the bottom of the operating table (6); a lifting platform (10) is installed on the bottom of the lifting rods (9); the airtightness detection mechanism (11) is provided in the form of a plurality of air pumps (2); and a plurality of air pumps (3) are installed on the bottom of the operating table (6). The airtightness detection mechanism (11) is screwed to the bottom end of the lifting platform (10), and the airtightness detection mechanism (11) comprises a pressure block (1101), a fixing rod (1102), a detection gauge (1103), a detection tube (1104) and a detection head (1105). The pressure block (1101) is screwed to the bottom end of the lifting platform (10), the fixing rod (1102) is screwed to both sides of the top of the pressure block (1101), and the detection gauge (1103) is installed on the surface of the pressure block (1101), the bottom end of the detection gauge (1103) is connected to the detection tube (1104), and the bottom end of the detection tube (1104) is provided with a detection head (1105).
2. The cylindrical lithium-ion battery airtightness test fixture according to claim 1, characterized in that: The placement mechanism (3) comprises a placement platform (301), a placement groove (302), a connection seat (303) and a fixing nut (304); the placement platform (301) is screwed to the top of the base (1); the inner wall of the placement platform (301) is provided with a placement groove (302); the front ends of the placement platform (301) are both welded with connection seats (303); and the front ends of the connection seats (303) are installed with fixing nuts (304).
3. The cylindrical lithium-ion battery airtightness test fixture according to claim 2, characterized in that: The fixing nut (304) and the connecting seat (303) are threadedly connected, and the inner wall of the fixing nut (304) and the outer wall of the connecting seat (303) are both threadedly arranged.
4. The cylindrical lithium-ion battery airtightness test fixture according to claim 1, characterized in that: The lifting platform (10) forms a lifting structure with the operating platform (6) through the lifting rod (9), and the lifting rod (9) is symmetrically arranged with the central axis of the lifting platform (10) as the axis.
5. The cylindrical lithium-ion battery airtightness test fixture according to claim 1, characterized in that: The pressing block (1101) is threadedly connected to the lifting platform (10) via a fixing rod (1102), and the outer wall of the fixing rod (1102) and the inner wall of the lifting platform (10) are both threadedly arranged.