Pluggable probe

Abstract

The utility model relates to the technical field of battery testing, in particular to a pluggable probe, which comprises a main body part, and a first annular bulge is arranged on the periphery of one end of the main body part; the current head is provided with a first stepped hole and a first inner hole which is coaxially arranged, and a first clamping groove is formed in the wall surface of the first inner hole in a surrounding mode in the circumferential direction; the current head is arranged on the first annular protrusion in a sleeving mode through the first stepped hole, and the shape of the first stepped hole is meshed with the shape of the first annular protrusion so that rotation of the current head can be limited. Therefore, the current head can be stably connected with the main body part without relative rotation through meshing with the first annular bulge and the first stepped hole, so that the possibility of loosening of the current head is reduced, and the stability and reliability of the plug-in probe are ensured; and the current head and the main body part are simpler in structure and convenient to install, and the cost can be saved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and more specifically, to a pluggable probe. Background Technology

[0002] Lithium-ion batteries have stood out among chemical energy storage devices due to their advantages such as high energy density, no memory effect, long cycle life, and environmental friendliness, and have attracted widespread attention from industries such as electric vehicles and 3C products.

[0003] The manufacturing process of lithium-ion batteries includes formation and capacity testing. During formation, it is necessary to monitor changes in the battery's current, voltage, and temperature. Typically, a battery detection probe is placed above the battery to be formed, and this probe is in contact with the battery's terminals to detect and control current and voltage changes. Only after formation and capacity testing are completed can the battery be used normally. Formation refers to the initial charging of the battery through contact between the probe assembly and the battery terminals to activate the battery. However, after repeated testing, the current probe tip can easily loosen, leading to inaccurate measurement results.

[0004] Therefore, there is an urgent need to invent a pluggable probe. Utility Model Content

[0005] One of the objectives of this invention is to provide a pluggable probe that addresses the shortcomings of existing technologies, ensuring that the current head of the pluggable probe remains stable after multiple uses, thereby improving the stability of the pluggable probe.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] A pluggable probe is provided, comprising: a main body having a through hole inside the main body, a voltage needle passing through the through hole, and a first annular protrusion on the outer periphery of one end of the main body; a current head having a first stepped hole and a first inner hole coaxially arranged, the wall of the first inner hole having a first groove arranged circumferentially; the current head being sleeved on the first annular protrusion through the first stepped hole, and the shape of the first stepped hole and the shape of the first annular protrusion engaging to restrict the rotation of the current head, a spring being provided in the first groove, and the current head being sleeved on one end of the main body through the spring.

[0008] Furthermore, the first annular protrusion has a plurality of protrusions projected along the axial direction of the main body, and the first stepped hole is provided with a recess at the corresponding position of the protrusion.

[0009] Further, the middle part of the main body is sleeved with a fixing sleeve, one end of the fixing sleeve is in abutment with the first annular protrusion through a first elastic member, and the other end is in abutment with a convex nut arranged at one end of the main body.

[0010] Further, a second stepped hole is arranged in the through hole, a first supporting member is arranged at the step of the second stepped hole, the first supporting member is centrally provided with an avoiding hole, the first supporting member is in abutment with a second elastic member, the second elastic member is in abutment with the voltage needle, and the second elastic member is used for providing elastic force for the voltage needle.

[0011] Further, the voltage needle is in the shape of a "T" character, the voltage needle comprises a rod body and a voltage needle head connected with each other, the voltage needle head is in abutment with the second elastic member through a second supporting member, the shape of the second supporting member matches the shape of the second elastic member and the voltage needle head, and the second supporting member is in the shape of a composite shape with a circular center and rectangular sides.

[0012] Further, the second supporting member is provided with a first recess, and the shape of the first recess matches the shape of the voltage needle head and is used for accommodating the voltage needle head.

[0013] Further, the main body is provided with a second recess, the shape of the second recess matches the shape of the second supporting member and is used for accommodating the second supporting member, and the supporting member moves along the axial direction of the main body in the second recess.

[0014] Further, a second inner hole coaxial with the second stepped hole is arranged in the through hole, a limiting member is arranged in the second inner hole, a limiting hole is arranged in the limiting member at a corresponding position of the voltage needle, a limiting pin is arranged in the limiting member, and the limiting pin is arranged in the limiting hole and the limiting member.

[0015] Further, the limiting hole is in the shape of a long strip, and the length direction of the limiting hole is consistent with the moving direction of the voltage needle.

[0016] Further, an outer thread is arranged at the outer periphery of one end of the main body away from the current head, the convex nut is threadedly connected with the main body through the outer thread, a positioning nut is arranged at the side of the convex nut away from the fixing sleeve, the positioning nut is threadedly connected with the main body, and a supporting frame is arranged between the positioning nut and the convex nut and is used for external electrical connection.

[0017] The utility model discloses beneficial effect lies in: the present application is connected to the main part through spring and current head and is set up, makes current head and main part can realize detachable connection, and when current head is damaged, the whole probe need not be replaced, only replaces current head to save the cost, and because detachable connection makes the stability between current head and main part decline, and through setting up first annular protrusion in main part, current head can realize the stable connection of current head and main part with the meshing of first annular protrusion and first step hole and can not rotate relatively, reduce the possibility of current head loosening, thereby guarantee the stability and reliability of probe, and the structure of current head and main part of the present application is simpler, and installation is convenient and can save the cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, and the illustrative embodiment and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0019] Figure 1 It is one of the structural schematic drawing of the utility model;

[0020] Figure 2 It is the second structural schematic drawing of the utility model;

[0021] Figure 3 It is the section view of the utility model;

[0022] Figure 4 It is the explosion drawing of the utility model;

[0023] Figure 5 It is the third structural schematic drawing of the utility model;

[0024] Figure 6 It is the fourth structural schematic drawing of the utility model;

[0025] Figure 7 It is the voltage needle structural schematic drawing of the utility model.

[0026] Wherein: 1-main part;11-pass hole;111-second step hole;112-second inner hole;12-first annular protrusion;121-protruding portion;13-external thread;2-voltage needle;21-first support piece;22-second support piece;221-first recess;23-second elastic member;24-voltage needle head;25-limiting piece;26-limiting hole;27-limiting pin;28-shaft;3-current head;31-first step hole;311-recessed portion;32-first inner hole;33-first clamping slot;34-spring;4-fixing sleeve;5-first elastic member;6-convex nut;7-positioning nut;8-support frame. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0028] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Although the present application is disclosed with the preferred embodiments as above, it is not intended to limit the claims, and any person skilled in the art can make several possible changes and modifications without departing from the concept of the present application, therefore the protection scope of the present application should be limited by the scope defined by the claims of the present application.

[0030] As shown in Figures 1-6 The present application provides a plug-in probe, comprising: a main body part 1, a through hole 11 is arranged inside the main body part 1, a voltage needle 2 is arranged in the through hole 11, the voltage needle 2 is the first part for measuring voltage after the plug-in probe is pressed and contacts the battery, a first annular protrusion 12 is arranged on one end of the main body part 1; a current head 3, the current head 3 is the second part for measuring current and contacts the battery, the current head 3 is provided with a first stepped hole 31 and a first inner hole 32 coaxially arranged, a first clamping groove 33 is circumferentially arranged on the wall surface of the first inner hole 32; the current head 3 is sleeved on the first annular protrusion 12 through the first stepped hole 31, and the shape of the first stepped hole 31 and the shape of the first annular protrusion 12 are engaged to limit the rotation of the current head 3, a spring 34 is arranged in the first clamping groove 33, a plurality of first clamping grooves 33 can be arranged to accommodate a plurality of springs 34 to ensure the stability of the connection between the current head 3 and the main body part 1, and the current head 3 is sleeved on one end of the main body part 1 through the spring 34.

[0031] The current head 3 is supported by the elastic force provided by the spring 34 to realize the clamping connection of the main body part 1 and the current head 3. Since the spring 34 can be deformed under force, the clamping state of the current head 3 and the spring 34 is changed, so that the current head 3 and the main body part 1 are detachably connected, and the current head 3 can be disassembled and assembled by pulling and inserting with force. Since the current head 3 and the main body part 1 are relatively rotatable due to the detachable connection, the current head 3 and the main body part 1 are prone to looseness. The first annular protrusion 12 can realize the engagement of the stepped hole and the shape of the first annular protrusion 12 to limit the rotation of the current head 3, thereby improving the stability of the current measurement.

[0032] Preferably, the middle part of the main body part 1 is sleeved with a fixing sleeve 4, which is a part for fixing the voltage needle 2 and external parts for moving the voltage needle 2. The fixing sleeve 4 is abutted with the first annular protrusion 12 at one end of the main body part 1 in the axial direction through the first elastic member 5. The first elastic member 5 is used to provide elastic force for the current head 3 to prevent the current head 3 from being in rigid contact with the battery. The other end is abutted with the convex nut 6 arranged at one end of the main body part 1. Since the first elastic member 5 is abutted with the first annular protrusion 12, the force of the first elastic member 5 will not act on the current head 3, thereby reducing the force acting on the current head 3 and reducing the looseness of the current head 3.

[0033] Preferably, the projection of the first annular protrusion 12 in the axial direction of the main body part 1 has a plurality of protruding parts 121, and the first stepped hole 31 is provided with a recess part 311 at the corresponding position of the protruding part 121. The plurality of protruding parts 121 can reduce the relative sliding between the current head 3 and the first annular protrusion 12 and improve the stability of the current head 3.

[0034] Preferably, the through hole 11 is provided with a second stepped hole 111, and the first support member 21 is arranged at the step of the second stepped hole 111. The first support member 21 is provided with an avoiding hole in the center, and the first support member 21 is abutted with the second elastic member 23. The second elastic member 23 is abutted with the voltage needle 2 to provide elastic force for the voltage needle 2. The second stepped hole 111 can be provided with the first support member 21, and the first support member 21 can well support the second elastic member 23 to make the supporting force of the second elastic member 23 to the voltage needle 2 not easy to deviate, so that the size of the force acting on the voltage needle 2 when the voltage needle 2 contacts the battery is appropriate, and the direction is accurate.

[0035] Preferably, the voltage needle 2 is in the shape of a "T", and the voltage needle 2 comprises a stem 28 and a voltage needle head 24 connected together. The shape of the voltage needle 2 is set to be a "T" shape, so that the width of the voltage needle head is larger, and the contact range is larger, so that the voltage needle head 24 is more likely to contact the appropriate position of the battery. Preferably, the stem 28 and the voltage needle head 24 are fixedly connected, so as to improve the stability of the voltage needle head 24, and the sampling is more accurate. The voltage needle head 24 is in abutment with the second elastic member 23 through the second support 22. The shape of the second support 22 matches the shape of the second elastic member 23 and the voltage needle head 24. The shape of the second support 22 is a composite shape with a circular center and rectangular sides. The circular center matches the shape of the second elastic member 23, so that the second elastic member 23 can uniformly provide elastic force for the voltage needle head 24 through the second support 22, so that the force of the voltage needle 2 on the battery is more uniform. The rectangular sides match the shape of the voltage needle head 24, so as to provide better support for the voltage needle head 24.

[0036] Preferably, the second support 22 is provided with a first recess 221, and the shape of the first recess 221 matches the shape of the voltage needle head 24, so as to accommodate the voltage needle head 24. The voltage needle head 24 can be stably installed on the second support 22. When the voltage needle 2 is pressed to contact the battery, the voltage needle head 24 remains stable, thereby improving the reliability and accuracy of the entire device.

[0037] Preferably, the main body 1 is provided with a second recess, and the shape of the second recess matches the shape of the second support 22, so as to accommodate the second support 22. The second support 22 moves in the axial direction of the main body 1 in the second recess, and the movement of the second support 22 in other directions is limited. The movement position of the voltage needle 2 can be controlled, so that the voltage needle 2 and the current head 3 can contact the battery in sequence.

[0038] Preferably, a second inner hole 112 is arranged in the through hole 11, a limiting piece 25 is arranged in the second inner hole 112, a limiting hole 26 is arranged in the corresponding position of the limiting piece 25, and a limiting pin 27 is arranged in the limiting piece 25. The limiting pin 27 passes through the limiting hole 26 and the limiting piece 25. The limiting hole 26 can limit the displacement of the voltage needle 2 and be used to control the position of the voltage needle 2 so as not to contact the through hole 11.

[0039] Preferably, the limiting hole 26 is in the shape of a long strip, and the length direction of the limiting hole 26 is consistent with the movement direction of the voltage needle 2, so that the voltage needle 2 can move more accurately within a certain range.

[0040] Preferably, the outer periphery of the main body 1 at the end away from the current head 3 is provided with external threads 13, the convex nut 6 is threadedly connected with the main body 1 through the external threads 13, a positioning nut 7 is arranged on the side of the convex nut 6 away from the fixing sleeve 4, the positioning nut 7 is threadedly connected with the main body 1, and a support frame 8 is arranged between the positioning nut 7 and the convex nut 6 for external electrical connection, which not only provides structural support, but also can help guide the current to the appropriate position, ensuring the stability and reliability of the current transmission.

[0041] The above description shows and describes several preferred embodiments of the present application, but as before, it should be understood that the present application is not limited to the forms disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be modified within the scope of the present application conceived herein, through the above teachings or related technical or knowledge. Any modification and change made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. A pluggable probe, characterized in that, include: The main body (1) has a through hole (11) inside, and a voltage needle (2) is inserted through the through hole (11). A first annular protrusion (12) is provided on the outer periphery of one end of the main body (1). The current head (3) is provided with a first stepped hole (31) and a first inner hole (32) coaxially arranged. The wall of the first inner hole (32) is provided with a first slot (33) around the periphery. The current head (3) is sleeved on the first annular protrusion (12) through the first stepped hole (31), and the shape of the first stepped hole (31) and the shape of the first annular protrusion (12) are engaged to restrict the rotation of the current head (3). A spring (34) is provided in the first slot (33), and the current head (3) is sleeved on one end of the main body (1) through the spring (34).

2. The pluggable probe according to claim 1, characterized in that: The first annular protrusion (12) has a plurality of protrusions (121) projected along the axial direction of the main body (1), and a recess (311) is provided in the first stepped hole (31) at the corresponding position of the protrusion (121).

3. The pluggable probe according to claim 1, characterized in that: A fixing sleeve (4) is fitted in the middle of the main body (1). One end of the fixing sleeve (4) along the axial direction of the main body (1) abuts against the first annular protrusion (12) through the first elastic element (5), and the other end abuts against the protruding nut (6) provided at one end of the main body (1).

4. The pluggable probe according to claim 1, characterized in that: The through hole (11) is provided with a second stepped hole (111), and a first support member (21) is provided at the step of the second stepped hole (111). The first support member (21) is provided with a clearance hole at its center. The first support member (21) abuts against the second elastic member (23), and the second elastic member (23) abuts against the voltage needle (2) to provide elastic force to the voltage needle (2).

5. The pluggable probe according to claim 4, characterized in that: The voltage needle (2) is T-shaped. The voltage needle (2) includes a connected rod body (28) and a voltage needle head (24). The voltage needle head (24) abuts against the second elastic member (23) through the second support member (22). The shape of the second support member (22) matches the shape of the second elastic member (23) and the voltage needle head (24). The shape of the second support member (22) is a composite shape with a circle in the center and rectangles on both sides.

6. The pluggable probe according to claim 5, characterized in that: The second support member (22) is provided with a first groove (221), and the shape of the first groove (221) matches the shape of the voltage needle (24) to accommodate the voltage needle (24).

7. The pluggable probe according to claim 5, characterized in that: The main body (1) is provided with a second groove (14), the shape of which matches the shape of the second support member (22) for accommodating the second support member (22), and the support member moves along the axial direction of the main body (1) within the second groove (14).

8. The pluggable probe according to claim 4, characterized in that: The through hole (11) is provided with a second inner hole (112) coaxially arranged with the second stepped hole (111). A limiting member (25) is provided in the second inner hole (112). The voltage needle (2) is provided with a limiting hole (26) at the corresponding position of the limiting member (25). A limiting pin (27) is provided in the limiting member (25). The limiting pin (27) passes through the limiting hole (26) and the limiting member (25).

9. The pluggable probe according to claim 8, characterized in that: The limiting hole (26) is elongated, and the length direction of the limiting hole (26) is consistent with the moving direction of the voltage needle (2).

10. The pluggable probe according to claim 3, characterized in that: The outer periphery of the main body (1) away from the current head (3) is provided with an external thread (13). The protruding nut (6) is threadedly connected to the main body (1) through the external thread (13). A positioning nut (7) is provided on the side of the protruding nut (6) away from the fixing sleeve (4). The positioning nut (7) is threadedly connected to the main body (1). A support frame (8) is provided between the positioning nut (7) and the protruding nut (6) for external electrical connection.

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