Diaphragm quality tester

Abstract

The utility model provides a diaphragm quality tester. The diaphragm quality tester comprises a power supply, a conductive plate, a conductive piece and a galvanometer, the current-conducting plate is electrically connected to the power supply and used for placing the diaphragm; the conductive part is electrically connected to the power supply, is used for being in contact with a to-be-detected area on the diaphragm and can move relative to the diaphragm; the galvanometer is electrically connected to the conductive member. The quality tester provided by the utility model can be used for detecting the short circuit rate of the diaphragm after Hi-pot test.

Description

Technical Field

[0001] The utility model relates to the technical field of cell production, and more specifically, to a separator quality tester. Background Art

[0002] After the finished separator is shipped to the client by the supplier, it is wound together with the positive and negative electrodes and then undergoes hot / cold pressing. Subsequently, a Hi-pot (insulation withstand voltage) test is carried out to determine whether the winding of this cell is qualified. Only the qualified cells will enter the next process. The separator disassembled from the unqualified cells will have "carbonized small black dots", which are actually breakdown points (edge carbonization) caused by the current piercing the separator during short circuit. If the short circuit rate is high, it will affect the quality of the final cell product. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] The technical problem to be solved by the utility model is how to detect the short circuit rate of the separator.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides a separator quality tester, which includes a power supply, a conductive plate, a conductive member and a galvanometer; the conductive plate is electrically connected to the power supply and is used for placing the separator; the conductive member is electrically connected to the power supply and is used for contacting the area to be detected on the separator and can move relative to the separator; the galvanometer is electrically connected to the conductive member.

[0008] Preferably, the separator quality tester further includes a protective cover, and the conductive plate, the conductive member and the separator are placed inside the protective cover.

[0009] Preferably, the conductive member includes a roller and a handle, and the roller is rotatably connected to the handle.

[0010] Preferably, the separator quality tester further includes a wire. The handle is made of insulating material, and a connection hole is provided on the handle. One end of the wire is electrically connected to the power supply, and the other end of the wire passes through the connection hole and is electrically connected to the conductive member.

[0011] Preferably, the conductive member is a conductive metal plate.

[0012] Preferably, the separator quality tester further includes a driving device, and the driving device is used to drive the separator to move so as to generate relative movement between the separator and the conductive member.

[0013] Preferably, the diaphragm quality tester further includes a driving device for driving the conductive member to move so as to generate relative movement between the diaphragm and the conductive member.

[0014] Preferably, the conductive plate is a copper plate or an aluminum plate.

[0015] (III) Advantageous Effects

[0016] The above technical solution of the present utility model has at least the following advantages:

[0017] After the unqualified diaphragm passes the Hi-pot test, it will be broken down to form small black carbonized dots. The diaphragm is placed on the conductive plate, and the small black carbonized dots on the diaphragm will come into contact with the conductive plate; the conductive member also contacts the diaphragm. When there are small black carbonized dots in the corresponding area of the contacted diaphragm, a circuit is formed by conduction between the conductive member, the conductive plate and the small black carbonized dots, and the current generated by the power supply passes through this circuit to cause the galvanometer to deflect. Then, the detection of different areas on the diaphragm is realized by driving the relative movement between the conductive member and the diaphragm. According to the above principle, if the diaphragm is unqualified, the galvanometer will deflect; if the diaphragm is qualified, the galvanometer will not deflect. Thus, the short-circuit rate of the diaphragm can be detected by this diaphragm quality tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of the diaphragm quality tester provided in Embodiment 1 of the present utility model.

[0020] Figure 2 is a schematic structural diagram of the diaphragm quality tester provided in Embodiment 2 of the present utility model.

[0021] The reference numerals in the drawings are as follows:

[0022] 1, power supply; 2, conductive plate; 3, conductive member; 4, galvanometer; 10, diaphragm; 31, roller; 32, handle; 5, wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical problems, technical solutions and advantageous effects to be solved by the present utility model more clearly understood, the following further describes the present utility model in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.

[0025] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not indicate that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating relative importance or indicating the quantity of technical features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. The following describes the specific implementation of the present utility model in more detail with reference to specific embodiments:

[0027] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a diaphragm quality tester, which includes a power supply 1, a conductive plate 2, a conductive member 3, and a galvanometer 4; the conductive plate 2 is electrically connected to the power supply 1 and is used for placing the diaphragm 10; the conductive member 3 is electrically connected to the power supply 1 and is used to contact the area to be detected on the diaphragm 10 and can move relative to the diaphragm 10; the galvanometer 4 is electrically connected to the conductive member 3. Specifically, the implementation principle of the present utility model is as follows: After an unqualified diaphragm passes the Hi-pot test, it will be broken down to form carbonized small black dots. The diaphragm 10 is placed on the conductive plate 2, and the carbonized small black dots on the diaphragm will contact the conductive plate 2; the conductive member 3 also contacts the diaphragm 10. When there are carbonized small black dots in the corresponding area contacted by the diaphragm 10, a circuit is formed by conduction between the conductive member 3, the conductive plate 2, and the carbonized small black dots, and the current generated by the power supply 1 passes through this circuit to cause the galvanometer 4 to deflect. Then, by driving the conductive member 3 to move relative to the diaphragm 10, different areas on the diaphragm 10 can be detected. According to the above principle, if the diaphragm 10 is unqualified, the galvanometer 4 will deflect; if the diaphragm 10 is qualified, the galvanometer 4 will not deflect. Thus, the short-circuit rate of the diaphragm 10 can be detected by this diaphragm quality tester. During the test, it should be noted that the conductive plate 2 and the conductive member 3 should not be in direct contact to avoid generating invalid test results.

[0028] As an alternative implementation of this embodiment, the diaphragm quality tester further includes a protective cover (not shown), and the conductive plate 2, the conductive member 3, and the diaphragm 10 are placed inside the protective cover. The protective cover is used to ensure personal safety and prevent foreign objects from entering and affecting the test results.

[0029] As Figure 1 shown, as an alternative implementation of this embodiment, the conductive member 3 includes a roller 31 and a handle 32, and the roller 31 is rotatably connected to the handle 32.

[0030] As an alternative implementation of this embodiment, the diaphragm quality tester further includes a wire 5. The handle 32 is made of insulating material, and a connection hole is provided on the handle 32. One end of the wire 5 is electrically connected to the power supply 1, and the other end of the wire 5 passes through the connection hole and is electrically connected to the conductive member 3. The handle 32 can be connected to a corresponding driving device to drive the conductive member 3.

[0031] As Figure 2 shown, as an alternative implementation of this embodiment, the conductive member 3 is a conductive metal plate. Specifically, the conductive metal plate is preferably a copper plate or an aluminum plate.

[0032] As an alternative implementation of this embodiment, the diaphragm quality tester further includes a driving device, which is used to drive the diaphragm 10 to move so as to generate relative movement between the diaphragm 10 and the conductive member 3. Specifically, the driving device includes but is not limited to a lead screw motor, a linear motor, a telescopic cylinder, etc. It should be noted that the connection between the driving device and the conductive member 3 should be insulated.

[0033] As an alternative implementation of this embodiment, the diaphragm quality tester further includes a driving device, which is used to drive the conductive member 3 to move so as to generate relative movement between the diaphragm 10 and the conductive member 3.

[0034] As an alternative implementation of this embodiment, the conductive plate 2 is a copper plate or an aluminum plate. Specifically, the driving device includes but is not limited to a reel for winding the diaphragm 10, or other pulling mechanisms, etc.

[0035] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A diaphragm quality tester, characterized in that: include: power supply; A conductive plate, electrically connected to the power source, for placing the diaphragm; A conductive member, electrically connected to the power source, used to contact the area to be detected on the diaphragm and capable of generating relative movement with the diaphragm; An ammeter is electrically connected to the conductive member.

2. The diaphragm quality tester according to claim 1, characterized in that: The diaphragm quality tester also includes a protective cover, and the conductive plate, the conductive member and the diaphragm are placed in the protective cover.

3. The diaphragm quality tester according to claim 1, characterized in that: The conductive member includes a roller and a handle, and the roller is rotatably connected to the handle.

4. The diaphragm quality tester according to claim 3, characterized in that: The diaphragm quality tester also includes a wire. The handle is made of insulating material. A connecting hole is provided on the handle. One end of the wire is electrically connected to the power supply, and the other end of the wire passes through the connecting hole to be electrically connected to the conductive member.

5. The diaphragm quality tester according to claim 1, characterized in that: The conductive member is a conductive metal plate.

6. The diaphragm quality tester according to claim 1, characterized in that: The diaphragm quality tester further comprises a driving device, and the driving device is used for driving the diaphragm to move so as to generate relative movement between the diaphragm and the conductive member.

7. The diaphragm quality tester according to claim 1, characterized in that: The diaphragm quality tester also includes a driving device, which is used to drive the conductive member to move so as to generate relative movement between the diaphragm and the conductive member.

8. The diaphragm quality tester according to any one of claims 1 to 7, characterized in that: The conductive plate is a copper plate or an aluminum plate.

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