Hollow tubular probe structure

Abstract

The utility model relates to the technical field of battery probes, and particularly discloses a hollow tubular probe structure which comprises an insulating base, a current probe, a voltage probe and a negative pressure cup, two arc-shaped grooves are symmetrically formed in the two sides of the upper surface of the insulating base about the center of the insulating base, and two connecting parts for connecting the two arc-shaped grooves are formed on the upper surface of the insulating base; a through groove is formed in the center of the upper surface of the insulating base; a through cavity is formed in the current pin, two first avoiding grooves are symmetrically formed in the two sides of the upper surface of the current pin relative to the center of the current pin, the current pin penetrates out of the interiors of the two arc-shaped grooves and enables the two connecting parts to be inserted into the two first avoiding grooves respectively, and a positioning part is arranged on the side wall of the upper portion of the through cavity and is in lap joint with the upper surface of the insulating base; the negative pressure cup is arranged above the insulating base and penetrates through the through groove to extend downwards; the current probe is designed to be of a hollow structure, the voltage probe is placed beside the current probe, and a position is reserved in the middle to assemble the negative pressure cup, so that the problem of interference between the probe and the negative pressure cup is solved.

Description

Technical Field

[0001] This application relates to the field of battery probe technology, and more particularly to an empty tubular probe structure. Background Technology

[0002] The positive and negative electrodes of the new cylindrical battery are on the same side. In the battery capacity formation process, traditional probes are no longer applicable, and a new probe structure needs to be designed.

[0003] The invention patent application with publication number CN114509587A discloses a cylindrical battery combination probe. The test ends of the battery contact temperature needle, negative electrode probe, and positive electrode probe are all located on the same side of the probe base. The negative electrode probe and the battery contact temperature needle are positioned on opposite sides of the positive electrode probe. This probe is suitable for cylindrical batteries with the positive and negative electrodes on the same side. Referring to Figures 6 and 7 of the aforementioned patent application, the positive electrode probe is cylindrical and almost completely covers the positive electrode post, suggesting that the battery's electrolyte filling hole is located at the negative electrode.

[0004] Currently, some cylindrical batteries on the market have the electrolyte injection hole located on the positive electrode post. During the capacity formation process, it is necessary to extract the electrolytic gas and excess electrolyte bubbles. Therefore, a negative pressure cup that can cover the electrolyte injection hole needs to be installed in the probe module. The circular positive electrode probe described in the aforementioned patent application will interfere with the negative pressure cup and is not suitable for this type of cylindrical battery. Therefore, the structure of the cylindrical battery probe needs to be improved. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this application discloses a hollow tubular probe structure.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a hollow tubular probe structure, including an insulating base, a current needle, a voltage needle and a negative pressure cup, wherein two arc-shaped grooves are symmetrically formed on both sides of the upper surface of the insulating base about its center, and two connecting parts are formed on the upper surface of the insulating base to connect the two arc-shaped grooves, and a through groove is formed in the center of the upper surface of the insulating base.

[0007] The current needle has a through cavity inside. Two first clearance grooves are symmetrically opened on both sides of the upper surface of the current needle about its center. The current needle passes through the inside of the two arc-shaped grooves and the two connecting parts are respectively inserted into the two first clearance grooves. The upper side wall of the through cavity is provided with a positioning part that overlaps the upper surface of the insulating base.

[0008] The negative pressure cup is positioned above the insulating base and extends downward through the through groove;

[0009] The voltage needle is inserted through one side of the upper surface of the insulating base.

[0010] More preferably, the insulating base is made of plastic material.

[0011] More preferably, the upper part of the current needle is provided with two spaced protrusions, each with a braided wire welded on it, and the two braided wires are connected to the same connecting piece.

[0012] More preferably, the bottom of the current needle has at least a second clearance groove, and the detection head of the voltage needle extends into the second clearance groove.

[0013] More preferably, the lower sidewall of the cavity is integrally provided with a step, and a spring is provided above the step.

[0014] More preferably, an annular groove is provided on the upper side wall of the current needle cavity, and the positioning part is a C-shaped buckle embedded in the annular groove; the two fastening parts of the C-shaped buckle overlap the upper surface of the insulating base.

[0015] More preferably, the upper surface of the insulating base is integrally provided with a protrusion, and the through groove extends to the protrusion.

[0016] More preferably, the through groove has a rhomboid structure.

[0017] This application achieves the following beneficial effects:

[0018] 1. This application avoids the problem of interference between the probe and the negative pressure cup by designing the current needle as a hollow structure and placing the voltage needle next to the current needle, leaving a space in the middle for mounting the negative pressure cup.

[0019] 2. This application provides two spaced protrusions integrated above the current needle, which allow for direct welding of braided wire. This method is low-cost and highly practical.

[0020] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0022] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0023] Figure 2 This is a schematic diagram of a partial installation structure disclosed in this application;

[0024] Figure 3 This is a schematic diagram of the current needle structure disclosed in this application;

[0025] In the diagram: 10. Insulating base; 11. Arc groove; 12. Connecting part; 13. Through groove; 14. Protrusion; 20. Current needle; 21. Through cavity; 22. First clearance groove; 23. Annular groove; 24. C-shaped buckle; 241. Fastening part; 25. Protrusion piece; 26. Step; 27. Spring; 28. Second clearance groove; 30. Voltage needle; 40. Negative pressure cup; 50. Braided wire; 51. Connecting piece. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Example

[0029] To address the interference problem between the cylindrical probe and the negative pressure cup 40 in the existing technology, reference Figure 1 and Figure 2 As shown, this application discloses a hollow tubular probe structure, including an insulating base 10, a current needle 20, a voltage needle 30, and a negative pressure cup 40. Preferably, the insulating base 10 is made of plastic material. Two arc-shaped grooves 11 are symmetrically formed on both sides of the upper surface of the insulating base 10 about its center. Two connecting parts 12 are formed on the upper surface of the insulating base 10 to connect the two arc-shaped grooves 11. A through groove 13 is formed in the center of the upper surface of the insulating base 10.

[0030] The current needle 20 has a through cavity 21 inside. Two first clearance grooves 22 are symmetrically formed on both sides of the upper surface of the current needle 20 about its center. The current needle 20 passes through the inside of the two arc-shaped grooves 11 and the two connecting parts 12 are respectively inserted into the two first clearance grooves 22. The upper side wall of the through cavity 21 has a positioning part that overlaps the upper surface of the insulating base 10. Based on this structure, the current needle 20 and the insulating base 10 can be fixedly installed.

[0031] The negative pressure cup 40 is positioned above the insulating base 10 and extends downward through the through groove 13, which can avoid the problem of interference between the probe and the negative pressure cup 40;

[0032] The voltage needle 30 is inserted through one side of the upper surface of the insulating base 10, and the bottom of the current needle 20 has at least a second clearance groove 28. The detection head of the voltage needle 30 extends into the second clearance groove 28. Without affecting the function, space is made for the negative pressure cup 40.

[0033] In one embodiment, the present application has two spaced protrusions 25 integrally provided above the current needle 20. Braided wires 50 are welded onto the two protrusions 25 respectively, and the two braided wires 50 are connected to the same connecting piece 51. This method can reduce costs and has high practicality.

[0034] In one embodiment, the lower sidewall of the cavity 21 of this application is integrally provided with a step 26, and a spring 27 is provided above the step 26 to provide elastic support for the current needle 20.

[0035] To facilitate the disassembly and fixation of the current needle 20 to the insulating base 10, an annular groove 23 is provided on the upper side wall of the current needle cavity. The positioning part is a C-shaped buckle 24 embedded in the annular groove 23. The two fastening parts 241 of the C-shaped buckle 24 overlap the upper surface of the insulating base.

[0036] During the installation of the current needle 20, the operator only needs to clip the C-shaped buckle 24 into the annular groove 23 and place the buckling part 241 of the C-shaped buckle 24 on the upper surface of the insulating base 10. Conversely, during the disassembly of the current needle 20, the operator only needs to remove the C-shaped buckle 24 from the annular groove 23.

[0037] In order to achieve stable fixation of the negative pressure cup 40, this application has an integrally provided protrusion 14 on the upper surface of the insulating base 10, and a through groove 13 extends to the protrusion 14. Preferably, the through groove 13 of this application has a rhomboid structure, which can prevent the negative pressure cup 40 from rotating axially during installation and operation.

[0038] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A hollow tubular probe structure, comprising an insulating base, a current needle, a voltage needle, and a negative pressure cup, characterized in that: The upper surface of the insulating base has two arc-shaped grooves symmetrically formed on both sides about its center. The upper surface of the insulating base has two connecting parts that connect the two arc-shaped grooves. The upper surface of the insulating base has a through groove in the center. The current needle has a through cavity inside. Two first clearance grooves are symmetrically opened on both sides of the upper surface of the current needle about its center. The current needle passes through the inside of the two arc-shaped grooves and the two connecting parts are respectively inserted into the two first clearance grooves. The upper side wall of the through cavity is provided with a positioning part that overlaps the upper surface of the insulating base. The negative pressure cup is positioned above the insulating base and extends downward through the through groove; The voltage needle is inserted through one side of the upper surface of the insulating base.

2. The hollow tubular probe structure according to claim 1, characterized in that, The insulating base is made of plastic material.

3. The hollow tubular probe structure according to claim 1, characterized in that, The current needle has two spaced protrusions integrally formed above it, and braided wires are welded onto the two protrusions respectively. The two braided wires are connected to the same connecting piece.

4. The hollow tubular probe structure according to claim 1, characterized in that, The bottom of the current needle has at least a second clearance groove, and the detection head of the voltage needle extends into the second clearance groove.

5. The hollow tubular probe structure according to claim 1, characterized in that, The lower sidewall of the cavity is integrally provided with a step, and a spring is provided above the step.

6. The hollow tubular probe structure according to claim 1, characterized in that, An annular groove is provided on the upper side wall of the current needle cavity, and the positioning part is a C-shaped buckle embedded in the annular groove; the two fastening parts of the C-shaped buckle overlap the upper surface of the insulating base.

7. The hollow tubular probe structure according to claim 1, characterized in that, The upper surface of the insulating base is integrally provided with a protrusion, and the through groove extends to the protrusion.

8. The hollow tubular probe structure according to claim 1, characterized in that, The through groove has a rhomboid structure.

Images