Button cell test fixture

Abstract

The utility model discloses a button cell test fixture, which comprises a lower cover and an upper cover covering the lower cover, the upper cover is provided with a bolt hole, the button cell test fixture also comprises an air pipe joint arranged on the lower cover and fixedly connected with the lower cover; the insulating bolt comprises a bolt head and a bolt rod arranged at the lower end of the bolt head, the bolt rod penetrates through the bolt hole from the upper part of the upper cover and is tightly inserted into the gas pipe joint, and the bolt head is blocked at the upper end of the bolt hole, so that the upper cover is fixed on the lower cover. The device is convenient to disassemble and assemble and low in cost.

Description

Technical Field

[0001] The utility model relates to a testing fixture, more specifically a button battery testing fixture. Background Art

[0002] A traditional button battery test fixture usually includes an upper cover and a lower cover. The upper cover is overlapped on the lower cover. After the upper cover and the lower cover are combined, the upper cover and the lower cover are fixed by a butterfly nut. However, since it takes a lot of time to tighten the nut, and the battery fixture needs to be frequently disassembled and assembled during testing, the test efficiency is very low. In addition, since the nut is usually made of metal, it cannot directly contact the battery fixture, otherwise it will cause a battery short circuit and needs to be separated by an insulating plastic part. Therefore, a circle of plastic insulating parts needs to be put on the nut, resulting in a large number of parts in the test fixture, which is not only inconvenient to disassemble and assemble, but also costly. Utility Model Content

[0003] The utility model provides a button battery test fixture to solve the technical problems that the button battery test fixture in the prior art is inconvenient to disassemble and assemble and has a high cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is to design a button battery test fixture, including a lower cover and an upper cover covering the lower cover, the upper cover is provided with a pin hole, and the button battery test fixture also includes:

[0005] An air pipe joint, which is arranged on the lower cover and fixedly connected to the lower cover;

[0006] The insulating plug includes a plug head and a plug rod arranged at the lower end of the plug head, the plug rod passes through the plug hole from above the upper cover and is tightly inserted into the air pipe joint, and the plug head blocks the upper end of the plug hole to fix the upper cover on the lower cover.

[0007] The lower cover is provided with a joint hole, and the air pipe joint is inserted into the joint hole and fixed at the joint hole.

[0008] The air pipe joint is made of insulating material.

[0009] The trachea connector is made of plastic.

[0010] The insulating plug is made of plastic.

[0011] The trachea joints include at least two, the insulating plugs include at least two, and the insulating plugs are arranged in a one-to-one correspondence with the trachea joints.

[0012] The air pipe joints and the insulating plugs each include four, and the four air pipe joints are evenly distributed around the lower cover.

[0013] The upper end of the lower cover is provided with a battery accommodating cavity; the lower end of the upper cover is provided with a spring accommodating cavity, and the upper end of the upper cover is provided with an upper cover hole communicating with the spring accommodating cavity; the upper cover and the lower cover are both made of conductive material;

[0014] The button battery test fixture also includes:

[0015] An insulating sleeve, which is arranged around the battery accommodating cavity, and the insulating sleeve is pressed onto the lower cover by the upper cover and isolates the upper cover from the lower cover;

[0016] An electrical connection column, the upper part of which is inserted into the hole of the upper cover, and the lower end of which is inserted into the battery accommodating cavity, and the electrical connection column can move up and down along the hole of the upper cover; a spring boss is arranged on the outer side of the electrical connection column; the electrical connection column is electrically connected to the upper cover;

[0017] A pressure spring, which is sleeved on the electrical connection column and compressed between the upper surface of the spring accommodating cavity and the spring boss;

[0018] A connection cap is connected to the upper end of the electrical connection column, the connection cap is made of insulating material, and the upper end of the connection cap extends out of the upper end of the upper cover hole.

[0019] A concave sealing groove is provided on the side of the electrical connection column; the button battery test fixture also includes:

[0020] A sealing ring is sleeved in the sealing groove, and the inner side of the insulating sleeve is sealed with the outer side of the sealing ring.

[0021] The button battery test fixture also includes:

[0022] A lower electrode column, which is disposed on the side of the lower cover and is electrically connected to the bottom of the battery accommodating cavity of the lower cover;

[0023] An upper electrode column is disposed on a side surface of the upper cover and is electrically connected to the electrical connection column.

[0024] The utility model provides a lower cover and an upper cover that fits on the lower cover, the upper cover is provided with a latch hole, and is provided with an air pipe joint and an insulating latch, the air pipe joint is provided on the lower cover and is fixedly connected to the lower cover; the insulating latch includes a latch head and a latch rod provided at the lower end of the latch head, the latch rod passes through the latch hole from above the upper cover and is inserted tightly into the air pipe joint, and the latch head blocks the upper end of the latch hole, so that the upper cover is fixed to the lower cover. Since the insulating latch is inserted tightly into the air pipe joint to fix the upper cover to the lower cover, it is not only convenient to disassemble and assemble, but also has fewer parts and lower cost than the nut and sealing ring method of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0026] Figure 1 It is a structural diagram of the button battery testing fixture of the utility model;

[0027] Figure 2 It is a cross-sectional view of the button battery test fixture of the utility model;

[0028] Figure 3 This is an exploded view of the button battery test fixture of the utility model;

[0029] Figure 4 It is an exploded view of the button battery test fixture of the utility model from another perspective. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings:

[0031] Please also see Figures 1 to 4 The button battery test fixture of the utility model comprises a lower cover 1, an upper cover 2, an air pipe joint 3 and an insulating plug 4. Among them:

[0032] The upper cover 2 is covered on the lower cover. The upper cover 1 is provided with a pin hole 21. In this specific embodiment, the lower cover 1 is provided with a joint hole 11, and the air pipe joint 3 is inserted into the joint hole and fixed at the joint hole. In this specific embodiment, the lower end of the air pipe joint is provided with a thread, which is threadedly connected with the joint hole.

[0033] The trachea connector 3 is arranged on the lower cover and fixedly connected to the lower cover. The trachea connector can be implemented by using an existing trachea connector. In this specific embodiment, the trachea connector is made of insulating material, so that the trachea connector is prevented from being conductive. Preferably, the trachea connector is made of plastic.

[0034] The insulating plug 4 includes a plug head 41 and a plug rod 42 disposed at the lower end of the plug head, wherein the plug rod 41 passes through the plug hole from above the upper cover and is inserted into the air pipe joint, and the plug head blocks the upper end of the plug hole to fix the upper cover to the lower cover. In this specific embodiment, the insulating plug is made of plastic.

[0035] When the upper cover and the lower cover are put together, the insulating plug is passed through the plug hole of the upper cover, inserted into the air pipe joint below, and pressed tightly, similar to the locking principle of inserting the air pipe into the air pipe joint, so that the upper cover and the lower cover are firmly fixed together. In addition, the plug is made of plastic, which can also play an insulating role. At the same time, the required installation time and installation parts are correspondingly reduced. When the upper cover and the lower cover need to be removed, the operation is the same as pulling out the air pipe at ordinary times, pressing the edge of the air pipe joint, and then the insulating plug can be taken down.

[0036] In order to achieve a stable connection, the trachea joints include at least two, the insulating plugs include at least two, and the insulating plugs are arranged in a one-to-one correspondence with the trachea joints.

[0037] In this specific embodiment, the air pipe joints and the insulating plugs each include four, and the four air pipe joints are evenly distributed around the lower cover.

[0038] The utility model is provided with a lower cover and an upper cover on the lower cover, wherein the upper cover is provided with a latch hole, and an air pipe joint and an insulating latch are provided, the air pipe joint is provided on the lower cover and fixedly connected to the lower cover; the insulating latch includes a latch head and a latch rod provided at the lower end of the latch head, the latch rod passes through the latch hole from above the upper cover and is inserted tightly into the air pipe joint, and the latch head blocks the upper end of the latch hole, so as to fix the upper cover on the lower cover. Since the insulating latch is inserted tightly into the air pipe joint to fix the upper cover on the lower cover, it is not only convenient to disassemble and assemble, but also has fewer parts and lower cost than the prior art method of nuts and sealing rings.

[0039] In this specific embodiment, the upper end of the lower cover 1 is provided with a battery accommodating cavity 12; the battery accommodating cavity is mainly used to place the battery material to be tested. The lower end of the upper cover 2 is provided with a spring accommodating cavity 22, and the upper end of the upper cover 2 is provided with an upper cover hole 23 communicating with the spring accommodating cavity. The upper cover and the lower cover are both made of conductive materials.

[0040] The button cell test fixture further includes an insulating sleeve 5, an electrical connection column 6, a pressure spring 7, a connection cap 8, a sealing ring 9, a lower electrode column 91 and an upper electrode column 92. Wherein:

[0041] The insulating sleeve 5 is arranged around the battery accommodating cavity, and the insulating sleeve is pressed on the lower cover by the upper cover and isolates the upper cover from the lower cover. By setting the insulating sleeve, when the upper cover is covered on the lower cover, there is no direct conduction between the upper cover and the lower cover.

[0042] The upper part of the electrical connection column 6 is inserted into the hole of the upper cover, and the lower end is inserted into the battery accommodating cavity. The electrical connection column can move up and down along the hole of the upper cover; a spring boss 61 is provided on the outer side of the electrical connection column. The electrical connection column is mainly used to convert the expansion deformation of the battery material into the displacement output of the electrical connection column. A concave sealing groove 62 is provided on the side of the electrical connection column 6. The electrical connection column is electrically connected to the upper cover.

[0043] The pressure spring 7 is sleeved on the electrical connection column and compressed between the upper surface of the spring accommodating cavity and the spring boss. The pressure spring is mainly used to make the electrical connection column press the battery material during testing.

[0044] The connection cap 8 is connected to the upper end of the electrical connection column. The connection cap is made of insulating material, and the upper end of the connection cap extends out of the upper end of the upper cover hole. The connection cap is mainly used to contact the external displacement sensor. The connection cap is made of insulating material to prevent electrical conduction to the displacement sensor.

[0045] The sealing ring 9 is sleeved in the sealing groove, and the inner side of the insulating sleeve is sealed with the outer side of the sealing ring. The sealing ring is mainly used to seal the battery material in the battery accommodating cavity to avoid the harm caused by the leakage of chemical substances in the battery material.

[0046] The lower electrode column 91 is disposed on the side of the lower cover and is electrically connected to the bottom of the battery receiving cavity of the lower cover.

[0047] The upper electrode column 92 is arranged on the side of the upper cover and is electrically connected to the electrical connection column. The lower electrode column and the upper electrode column are mainly used to connect the positive and negative electrodes of the battery material. At the same time, the use of the column can facilitate the connection with the external power supply, making the connection more convenient.

[0048] During the test, first remove the upper cover, place the battery material 10 to be tested in the battery accommodating cavity, then cover the upper cover so that the lower end surface of the electrical connection column presses the upper end surface of the battery material, and then insert the insulating plug into the air pipe joint to firmly connect the upper cover and the lower cover. Under the action of the top pressure spring, the electrical connection column is in close contact with the upper end surface of the battery material, and the positive and negative electrodes of the battery material are respectively connected to the electrical connection column and the bottom surface of the battery accommodating cavity. Then connect the upper and lower connection columns to the positive and negative electrodes of the external power supply, and place the probe of the displacement sensor at the upper end of the connection cap, and then start the test. When the battery material expands and deforms, the electrical connection column moves upward, and the upward displacement of the electrical connection column is the expansion deformation of the battery material.

[0049] The utility model is provided with a lower cover and an upper cover on the lower cover, wherein the upper cover is provided with a latch hole, and an air pipe joint and an insulating latch are provided, the air pipe joint is provided on the lower cover and fixedly connected to the lower cover; the insulating latch includes a latch head and a latch rod provided at the lower end of the latch head, the latch rod passes through the latch hole from above the upper cover and is inserted tightly into the air pipe joint, and the latch head blocks the upper end of the latch hole, so as to fix the upper cover on the lower cover. Since the insulating latch is inserted tightly into the air pipe joint to fix the upper cover on the lower cover, it is not only convenient to disassemble and assemble, but also has fewer parts and lower cost than the prior art method of nuts and sealing rings.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A button battery test fixture, comprising a lower cover and an upper cover covering the lower cover, characterized in that: The upper cover is provided with a pin hole, and the button battery test fixture further comprises: An air pipe joint, which is arranged on the lower cover and fixedly connected to the lower cover; The insulating plug includes a plug head and a plug rod arranged at the lower end of the plug head, the plug rod passes through the plug hole from above the upper cover and is tightly inserted into the air pipe joint, and the plug head blocks the upper end of the plug hole to fix the upper cover on the lower cover.

2. The button battery test fixture according to claim 1, characterized in that: The lower cover is provided with a joint hole, and the air pipe joint is inserted into the joint hole and fixed at the joint hole.

3. The button battery test fixture according to claim 1, characterized in that: The air pipe joint is made of insulating material.

4. The button battery test fixture according to claim 3, characterized in that: The trachea connector is made of plastic.

5. The button battery test fixture according to claim 1, characterized in that: The insulating plug is made of plastic.

6. The button battery test fixture according to claim 1, characterized in that: The trachea joints include at least two, the insulating plugs include at least two, and the insulating plugs are arranged in a one-to-one correspondence with the trachea joints.

7. The button battery test fixture according to claim 6, characterized in that: The air pipe joints and the insulating plugs each include four, and the four air pipe joints are evenly distributed around the lower cover.

8. The button battery test fixture according to claim 1, characterized in that: The upper end of the lower cover is provided with a battery accommodating cavity; the lower end of the upper cover is provided with a spring accommodating cavity, and the upper end of the upper cover is provided with an upper cover hole communicating with the spring accommodating cavity; the upper cover and the lower cover are both made of conductive material; The button battery test fixture also includes: An insulating sleeve, which is arranged around the battery accommodating cavity, and the insulating sleeve is pressed onto the lower cover by the upper cover and isolates the upper cover from the lower cover; An electrical connection column, the upper part of which is inserted into the hole of the upper cover, and the lower end of which is inserted into the battery accommodating cavity, and the electrical connection column can move up and down along the hole of the upper cover; a spring boss is arranged on the outer side of the electrical connection column; the electrical connection column is electrically connected to the upper cover; A pressure spring, which is sleeved on the electrical connection column and compressed between the upper surface of the spring accommodating cavity and the spring boss; A connection cap is connected to the upper end of the electrical connection column, the connection cap is made of insulating material, and the upper end of the connection cap extends out of the upper end of the upper cover hole.

9. The button battery test fixture according to claim 8, characterized in that: A concave sealing groove is provided on the side of the electrical connection column; the button battery test fixture also includes: A sealing ring is sleeved in the sealing groove, and the inner side of the insulating sleeve is sealed with the outer side of the sealing ring.

10. The button battery test fixture according to claim 9, characterized in that: The button battery test fixture also includes: A lower electrode column, which is disposed on the side of the lower cover and is electrically connected to the bottom of the battery accommodating cavity of the lower cover; An upper electrode column is disposed on a side surface of the upper cover and is electrically connected to the electrical connection column.

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