A single-pole detection device

Abstract

The utility model provides a single-pole piece detection device, including a lower shell, a diaphragm clamping ring arranged in the lower shell, a push rod, an upper shell sealed and connected to the lower shell, and a diaphragm clamping ring cover and a conductive spring; through the arrangement of the diaphragm clamping ring and the diaphragm clamping ring cover, the leakage path of the electrolyte is divided into two paths, and at the same time, the path of the electrolyte leaking to the conductive spring is lengthened, effectively slowing down the leakage speed of the electrolyte, greatly improving the effectiveness of the use of the sealing ring, and avoiding the electrolyte from continuing to leak downward and contacting the conductive spring, affecting the accuracy of the detection result. By arranging the push rod into two pieces, the rod component is fixed in the chamber of the lower shell, so that the conductive spring is more stably abutted against the rod part and the lower shell, thereby making the conduction more stable; at the same time, the lower end face of the step portion of the rod component is in close contact with the bottom end face of the first chamber of the lower shell, which further prevents the leakage of the electrolyte.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a single-stage chip detection device. Background Art

[0002] The volume of the battery pole piece changes during the charging and discharging process, which has a significant impact on the electrical performance and installation performance of the entire battery. Therefore, when designing or producing products, the thickness change of the pole piece during charging and discharging is measured.

[0003] Button batteries require less materials and are easy to assemble. The results observed with button batteries can also be used as a reference for large-size batteries suitable for commercial applications, so button batteries are often used for testing. Existing detection devices usually stack the positive electrode, diaphragm, and negative electrode into a button fixture, drip electrolyte to simulate the battery, and then power on for testing; the displacement distance of the piston rod is measured to detect the volume change of the electrode during the charging and discharging process; however, this method can only measure the overall thickness change, which may be affected by the interference between the diaphragm, assembly, and electrode, and cannot evaluate and analyze the performance of a single electrode separately, which has limitations.

[0004] Although there are existing single-electrode sheet detection devices, for example, the patent with application number 202310074735.8 provides a single-electrode sheet detection fixture, which forms a detection cavity between the middle shell and the lower shell, and a sealed environment is formed between the middle shell and the lower shell and between the middle shell and the upper shell through a sealing ring, but because the electrolyte is corrosive, the electrolyte in the hard diaphragm will leak downward to the gap between the middle shell and the lower shell under long-term use and squeezing, directly contacting the sealing ring, causing corrosion of the sealing ring, and then leading to poor sealing; at the same time, the corrosion of the sealing ring causes the electrolyte to continue to leak downward and contact the conductive rod, affecting the accuracy of the detection result. Utility Model Content

[0005] In view of this, an object of the present invention is to provide a single-pole piece detection device to solve the above-mentioned problem.

[0006] The utility model adopts the following scheme:

[0007] The present application provides a single-pole piece detection device, comprising a lower shell, a diaphragm clamping ring and a push rod arranged in the lower shell, and an upper shell sealedly connected to the lower shell;

[0008] It also includes a diaphragm retaining ring cover and a conductive spring; a first chamber with an upper opening is provided on the lower shell; a conducting groove is provided at the bottom of the chamber; the diaphragm retaining ring is arranged in the first chamber, and a second chamber with an upper opening is provided on the diaphragm retaining ring, and a through hole connected to the conducting groove is provided at the bottom of the second chamber; the top rod is arranged in the second chamber, and its rod portion is placed in the conducting groove through the through hole, and its top portion is used to abut the reaction electrode; the rod portion and the through hole form a side seal through a first sealing ring; the conductive spring is arranged in the conducting groove, abutting against the rod portion and the lower shell; the top of the diaphragm retaining ring is used to support and place a hard diaphragm; the diaphragm retaining ring cover is placed in the first chamber to fix the hard diaphragm, and forms a seal with the diaphragm retaining ring through a second sealing ring.

[0009] Furthermore, it also includes a first spring; the top rod includes a rod component and a top component; the rod component includes the rod portion and a step portion connected to the top end of the rod portion; the top end surface of the top component is used to abut the reaction electrode; the first spring is arranged between the top component and the step portion; the lower end surface of the step portion is in close contact with the bottom end surface of the first chamber.

[0010] Furthermore, a first step is provided on the outside of the diaphragm retaining ring; a second step is provided inside the diaphragm retaining ring cover; the first step and the bottom end surface of the diaphragm retaining ring cover form a seal through the second sealing ring; the second step cooperates with the top end surface of the diaphragm retaining ring to fix the hard diaphragm.

[0011] Furthermore, a plurality of sealing rings are arranged between the bottom end surface of the upper shell and the upper end surface of the lower shell.

[0012] Furthermore, it also includes a rotary cover, a movable plug, a cover plate, a second spring, an upper conductive rod and a lower conductive rod; the upper shell is detachably connected to the lower shell through the rotary cover; the movable plug is passed through the upper shell, and its action part is placed in the diaphragm clamp ring to abut against the receiving and measuring electrode; the second spring is arranged between the action part and the upper shell; the cover plate is connected to the upper shell, and the upper conductive rod is connected to the cover plate; the lower conductive rod is connected to the lower shell.

[0013] Furthermore, a positioning plate is also included, which is arranged at the bottom of the lower shell and protrudes outward.

[0014] Furthermore, the hard diaphragm is a ceramic diaphragm for electrolysis.

[0015] Furthermore, the conductive spring is a helical thread spring.

[0016] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0017] 1. Through the setting of the diaphragm clamp ring and the diaphragm clamp ring cover, the leakage path of the electrolyte is divided into two paths, and at the same time, the path of the electrolyte leakage to the conductive spring is lengthened, which effectively slows down the leakage speed of the electrolyte, greatly improves the effectiveness of the use of the sealing ring, and avoids the electrolyte from continuing to leak downward and contacting the conductive spring, affecting the accuracy of the test results.

[0018] 2. By setting the top rod into two pieces and fixing the rod component in the chamber of the lower shell, the conductive spring can be more stably in contact with the rod part and the lower shell, thereby making the conduction more stable; at the same time, the lower end surface of the step portion of the rod component is in close contact with the bottom end surface of the first chamber of the lower shell, which further prevents leakage of the electrolyte.

[0019] 3. By setting the chamber opening on the lower shell, an end face seal is formed between the lower end face of the upper shell and the upper end face of the lower shell. Even if the electrolyte leaks, it will not contact the sealing ring between the lower end face of the upper shell and the upper end face of the lower shell, and will not cause sealing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the bottom structure of a single-pole piece detection device according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the lower shell of a single-pole piece detection device according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of a diaphragm clamp ring of a single-pole piece detection device according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic cross-sectional structure diagram of a diaphragm clamping ring cover of a single-pole piece detection device according to an embodiment of the utility model;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of a rod component of a single-pole piece detection device according to an embodiment of the utility model;

[0027] Icons: lower shell 1, diaphragm retaining ring 2, upper shell 3, diaphragm retaining ring cover 4, conductive spring 5, first sealing ring 6, second sealing ring 7, first spring 8, rod component 9, top component 10, third sealing ring 11, screw cover 12, second spring 13, movable plug 14, cover plate 15, upper conductive rod 16, lower conductive rod 17, positioning plate 18, first chamber 19, conducting groove 20, second chamber 21, through hole 22, first step 23, second step 24, rod portion 25, step portion 26, hard diaphragm 27. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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 making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Example

[0030] Combination Figures 1 to 6 As shown, this embodiment provides a single-pole piece detection device, comprising a lower shell 1, a diaphragm clamping ring 2 arranged in the lower shell 1, a push rod, and an upper shell 3 sealedly connected to the lower shell 1;

[0031] It also includes a diaphragm retaining ring cover 4 and a conductive spring 5; the lower shell 1 is provided with a first chamber 19 with an upper opening; the bottom of the first chamber 19 is provided with a conducting groove 20; the diaphragm retaining ring 2 is arranged in the first chamber 19, and is provided with a second chamber 21 with an upper opening, and the bottom of the second chamber 21 is provided with a through hole 22 connected with the conducting groove 20; the top rod is arranged in the second chamber 21, and its rod portion 25 is placed in the conducting groove 20 through the through hole 22, and its top is used to abut the reaction electrode; the rod portion 25 and the through hole 22 form a side seal through the first sealing ring 6; the conductive spring 5 is arranged in the conducting groove 20, and abuts against the rod portion 25 and the lower shell 1; the top of the diaphragm retaining ring 2 is used to support and place a hard diaphragm 27; the diaphragm retaining ring cover 4 is placed in the first chamber 19 for fixing the hard diaphragm 27, and forms a seal with the diaphragm retaining ring 2 through the second sealing ring 7.

[0032] Specifically, in this embodiment, Figures 3 to 5 As shown, the hard diaphragm 27 is a ceramic diaphragm for electrolysis; the outer side of the diaphragm retaining ring 2 is provided with a first step 23; the inside of the diaphragm retaining ring cover 4 is provided with a second step 24; the first step 23 and the bottom end face of the diaphragm retaining ring cover 4 form a seal through the second sealing ring 7; the second step 24 cooperates with the top end face of the diaphragm retaining ring 2 to fix the hard diaphragm 27. Through the arrangement of the diaphragm retaining ring 2 and the diaphragm retaining ring cover 4, the leakage path of the electrolyte is divided into two paths, and at the same time, the path of the electrolyte leakage to the conductive spring 5 is lengthened, which effectively slows down the leakage speed of the electrolyte, greatly improves the effectiveness of the use of the sealing ring, and avoids the electrolyte from continuing to leak downward and contacting the conductive spring 5, affecting the accuracy of the detection result. It should be noted that the amount of electrolyte during detection is not much, and the amount of electrolyte leaking to the first sealing ring 6 through the arrangement of the above structure is very small, or even no.

[0033] In this embodiment, a first spring 8 is also included; the conductive spring 5 is a helical spring; Figure 2 and Figure 6 As shown, the ejector pin includes a rod component 9 and an ejector component 10; the rod component 9 includes the rod portion 25 and a step portion 26 connected to the top of the rod portion 25; the top end surface of the ejector component 10 is used to abut the reaction electrode; the first spring 8 is arranged between the top component 10 and the step portion 26; the lower end surface of the step portion 26 is in close contact with the bottom end surface of the first chamber 19. By arranging the ejector pin into two pieces, the rod component 9 is fixed in the chamber of the lower shell 1, so that the oblique thread spring is more stably abutted with the rod portion 25 and the lower shell 1, thereby making the conduction more stable; at the same time, the lower end surface of the step portion 26 of the rod component 9 is in close contact with the bottom end surface of the first chamber 19 of the lower shell 1, which further prevents leakage of the electrolyte.

[0034] In this embodiment, it also includes a rotary cover 12, a movable plug 14, a cover plate 15, a second spring 13, an upper conductive rod 16 and a lower conductive rod 17; the upper shell 3 is detachably connected to the lower shell 1 through the rotary cover 12; the movable plug 14 is inserted into the upper shell 3, and its action part is placed in the diaphragm clamp ring 2, which is used to abut against the receiving electrode; the second spring 13 is arranged between the action part and the upper shell 3; the cover plate 15 is connected to the upper shell 3, the upper conductive rod 16 is connected to the cover plate 15; the lower conductive rod 17 is connected to the lower shell 1. A plurality of third sealing rings 11 are arranged between the bottom end surface of the upper shell 3 and the upper end surface of the lower shell 1. By setting the first chamber 19 opened on the lower shell 1, an end face seal is formed between the lower end face of the upper shell 3 and the upper end face of the lower shell 1. Even if the electrolyte leaks, it will not contact the sealing ring between the lower end face of the upper shell 3 and the upper end face of the lower shell 1, and will not cause sealing failure. In this embodiment, a positioning plate 18 is also included, which is arranged at the bottom of the lower shell 1 and protrudes outward; it is convenient for the entire detection device to be positioned and fixed on the platform.

[0035] The above are only preferred implementations of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

Claims

1. A single-pole piece detection device, comprising a lower shell, a diaphragm retaining ring and a push rod arranged in the lower shell, and an upper shell sealedly connected to the lower shell; characterized in that: It also includes a diaphragm retaining ring cover and a conductive spring; a first chamber with an upper opening is provided on the lower shell; a conducting groove is provided at the bottom of the first chamber; the diaphragm retaining ring is arranged in the first chamber, and is provided with a second chamber with an upper opening, and a through hole connected to the conducting groove is provided at the bottom of the second chamber; the top rod is arranged in the second chamber, and its rod portion is placed in the conducting groove through the through hole, and its top portion is used to abut the reaction electrode; the rod portion and the through hole form a side seal through a first sealing ring; the conductive spring is arranged in the conducting groove, abutting against the rod portion and the lower shell; the top of the diaphragm retaining ring is used to support and place a hard diaphragm; the diaphragm retaining ring cover is placed in the first chamber to fix the hard diaphragm, and forms a seal with the diaphragm retaining ring through a second sealing ring.

2. The monopole detection device according to claim 1, characterized in that: It also includes a first spring; the top rod includes a rod component and a top component; the rod component includes the rod portion and a step portion connected to the top end of the rod portion; the top end surface of the top component is used to abut the reaction electrode; the first spring is arranged between the top component and the step portion; the lower end surface of the step portion is in close contact with the bottom end surface of the first chamber.

3. The monopole detection device according to claim 1, characterized in that: A first step is arranged on the outside of the diaphragm retaining ring; a second step is arranged inside the diaphragm retaining ring cover; the first step and the bottom end surface of the diaphragm retaining ring cover form a seal through the second sealing ring; the second step cooperates with the top end surface of the diaphragm retaining ring to fix the hard diaphragm.

4. The monopole detection device according to claim 1, characterized in that: A plurality of sealing rings are arranged between the bottom end surface of the upper shell and the upper end surface of the lower shell.

5. The monopole detection device according to claim 1, characterized in that: It also includes a rotary cover, a movable plug, a cover plate, a second spring, an upper conductive rod and a lower conductive rod; the upper shell is detachably connected to the lower shell through the rotary cover; the movable plug is inserted into the upper shell, and its action part is placed in the diaphragm clamp ring for abutting against the receiving and measuring electrode; the second spring is arranged between the action part and the upper shell; the cover plate is connected to the upper shell, and the upper conductive rod is connected to the cover plate; the lower conductive rod is connected to the lower shell.

6. The monopole detection device according to claim 5, characterized in that: A positioning plate is also included, which is arranged at the bottom of the lower shell and protrudes outward.

7. The monopole detection device according to claim 1, characterized in that: The hard diaphragm is a ceramic diaphragm for electrolysis.

8. The monopole detection device according to claim 1, characterized in that: The conductive spring is a helical thread spring.

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