A low resistance probe for blade battery

Abstract

The present invention relates to the field of battery manufacturing technology, and specifically to a low-resistance probe for a blade battery, comprising: a placement groove is provided on the surface of a test head, a placement plate is provided in the placement groove, a beveled tooth plate is provided on the surface of the placement plate, a needle tip is provided on the surface of the beveled tooth plate, and a second test head surface is provided with trapezoidal teeth; the beneficial effects are as follows: the low-resistance probe for a blade battery proposed by the present invention, when in use, the needle tip is arranged on the beveled tooth plate, and elastic deformation can occur due to the thin thickness of the beveled tooth plate. When the probe is tilted or unevenly stressed, more needle tips can contact the battery poles, thereby reducing the contact resistance of the product and meeting the needs of excessive current, and the height of the trapezoidal teeth is set 0.2 mm lower than the height of the needle tip, which can prevent the needle tip from being damaged due to elastic deformation due to single-sided stress when the initial pressing is relatively inclined.

Description

Technical Field

[0001] The invention relates to the technical field of battery manufacturing, in particular to a low-resistance probe for a blade battery. Background Art

[0002] As the new energy industry matures, battery types are becoming more diverse, and the current required for the capacity division of power batteries is getting larger and larger. The probes with the original structure cannot meet the needs of excessively large current meters, so a new probe structure needs to be designed.

[0003] China Patent Network CN208921755U discloses a large current detection probe, including a hollow needle rod and a copper needle, the copper needle is sleeved in the hollow needle rod, the copper needle is insulated and connected to the hollow needle rod and coaxially arranged, the bottom of the hollow needle rod is a waist-shaped platform, the middle of the waist-shaped platform is provided with a groove body, the outer periphery of the bottom end of the copper needle is connected with a terminal matching the inner contour of the groove body, the outer side of the terminal is sleeved with a front rubber sleeve, the outer side of the hollow needle rod is sleeved with a sleeve, and a large spring is provided between the bottom surface of the sleeve and the upper surface of the waist-shaped platform. The utility model has an optimized structure, good contact, and high test accuracy.

[0004] However, in the above technical solution, all the first conical needle tips are processed on the same plane. In actual use, if the probe has a slight deflection or uneven force, it is difficult to make more needle tips contact the battery pole, resulting in increased contact resistance and inability to meet the demand for excessive current. Summary of the invention

[0005] The object of the present invention is to provide a low-resistance probe for a blade battery to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-resistance probe for a blade battery, comprising a test head, a through hole is provided on the surface of the test head, a second test head is arranged in the through hole, a fixing plate is provided at one end of the through hole, a copper needle is inserted in the fixing plate, a placement groove is provided at one end of the test head, a vertical plate is provided at one end of the placement groove, a fixed tube body is provided on the side of the vertical plate, a placement plate is sleeved on the surface of the fixed tube body, an oblique tooth plate is provided on the surface of the placement plate, a needle tip is provided on the surface of the oblique tooth plate, a positioning rod is provided on the side of the test head, a threaded hole is provided on the surface of the positioning rod, and a second positioning bolt is screwed in the threaded hole;

[0007] The second test head has trapezoidal teeth on its surface, a sleeve is provided on the surface of the fixed plate, a slide groove is provided at one end of the sleeve, a damping bearing is provided at one end of the slide groove, a screw is inserted into the damping bearing, a moving plate is screwed on the surface of the screw, a push plate is provided on the side of the moving plate, and a sleeve is sleeved on the surface of the sleeve.

[0008] Preferably, a positioning plate is provided on the surface of the fixing plate, and the positioning plate is fixed to the surface of the test head by positioning bolts. The positioning plate is an "L"-shaped plate structure, and two groups of positioning plates are provided, and the two groups of positioning plates are symmetrically distributed about the copper needle.

[0009] Preferably, the bevel tooth plate is fixed on the surface of the placing plate at a certain angle, the bevel tooth plate is thin and can undergo elastic deformation at a certain angle, a spring sheet is arranged at the bottom of the bevel tooth plate, and multiple groups of bevel tooth plates are arranged linearly and regularly about the surface of the placing plate, a fixing hole is opened on the end face of the placing plate, and the placing plate is mounted on the fixed tube body using the fixing hole.

[0010] Preferably, one end of the fixed tube body is fixedly connected to the side of the vertical plate, and a second threaded hole is opened at the bottom of one end of the fixed tube body. One end of the second positioning bolt can be screwed into the second threaded hole, and the second positioning bolt can be screwed into the fixed tube body to fix the placement plate.

[0011] Preferably, the lower surface of the damping bearing is fixedly connected to the bottom of the slide groove, and one end of the screw is inserted into the inner ring surface of the damping bearing, and the movable plate can be moved up and down on the screw by rotating the screw.

[0012] Preferably, a spring is provided at one end of the sleeve, the spring is sleeved on the sleeve, one end of the spring is fixedly connected to the bottom of the sleeve, and the other end of the spring is fixedly connected to the surface of the fixing plate.

[0013] Preferably, the bottom of the trapezoidal teeth is fixedly connected to the surface of the second test head, and the height of the trapezoidal teeth is set to be 0.2 mm lower than the height of the needle tip.

[0014] Preferably, one end of the sleeve is fixedly connected to the surface of the fixed plate, one end of the sleeve is provided with an insulating sleeve, and the copper needle passes through the insulating sleeve and is inserted into the sleeve.

[0015] Preferably, the push plate is an annular plate structure, one end of the movable plate is fixedly connected to the inner side surface of the push plate, and the push plate is located on the upper surface of the sleeve.

[0016] Preferably, one end of the positioning rod is fixedly connected to the side of the test head, one end of the spring sheet is fixedly connected to the lower surface of the bevel tooth plate, and the other end of the spring sheet is fixedly connected to the surface of the placement plate, and the spring sheet is an arc-shaped plate structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention proposes a low-resistance probe for a blade battery. When in use, the present invention sets the needle tip on a bevel tooth plate. In addition, since the bevel tooth plate is thin and elastic deformation can occur, when the probe is tilted or unevenly stressed, more needle tips can contact the battery poles, thereby reducing the contact resistance of the product and meeting the needs of excessive current. In addition, the height of the trapezoidal teeth is set to be 0.2 mm lower than the height of the needle tip, which can prevent the needle tip from being damaged due to elastic deformation due to single-sided stress when the initial pressing is relatively oblique. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention after the sleeve is removed;

[0021] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4 This is a schematic diagram of the copper needle structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the test head of the present invention;

[0024] Figure 6 for Figure 5 Enlarged structural diagram at B in the middle.

[0025] In the figure: 1, test head; 2, through hole; 3, second test head; 4, fixing plate; 5, copper needle; 6, placement groove; 7, vertical plate; 8, fixed tube body; 9, placement plate; 10, bevel tooth plate; 11, positioning rod; 12, second positioning bolt; 13, trapezoidal teeth; 14, sleeve; 15, slide groove; 16, damping bearing; 17, screw; 18, moving plate; 32, push plate; 33, sleeve; 34, needle tip, 35, positioning plate; 36, spring; 37, fixing hole; 38, second threaded hole; 39, spring; 40, positioning bolt; 41, insulating sleeve; 42, threaded hole. DETAILED DESCRIPTION

[0026] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other. Embodiment 1

[0030] See also Figures 1 to 6The present invention provides a technical solution: a low-resistance probe for a blade battery, comprising a test head 1, a through hole 2 is provided on the surface of the test head 1, a second test head 3 is arranged in the through hole 2, a fixing plate 4 is provided at one end of the through hole 2, a copper needle 5 is inserted in the fixing plate 4, a placement groove 6 is provided at one end of the test head 1, a vertical plate 7 is provided at one end of the placement groove 6, a fixed tube body 8 is provided on the side of the vertical plate 7, a placement plate 9 is sleeved on the surface of the fixed tube body 8, a bevel tooth plate 10 is provided on the surface of the placement plate 9, and a needle tip 34 is provided on the surface of the bevel tooth plate 10, the test head 1 is provided with a through hole 2, a second test head 3 is arranged in the through hole 2, a fixing plate 4 is provided at one end of the through hole 2, a copper needle 5 is inserted in the fixing plate 4, a placement groove 6 is provided at one end of the placement groove 6, a vertical plate 7 is provided at one end of the vertical plate 7, a fixed tube body 8 is provided on the side of the vertical plate 7, a placement plate 9 is provided on the surface of the fixed tube body 8, a bevel tooth plate 10 is provided on the surface of the bevel tooth plate 10, and a needle tip 34 is provided on the surface of the bevel tooth plate 10, A positioning rod 11 is provided on the side of the head 1, a threaded hole 42 is provided on the surface of the positioning rod 11, and a second positioning bolt 12 is screwed in the threaded hole 42; a second test head 3, a trapezoidal tooth 13 is provided on the surface of the second test head 3, a sleeve 14 is provided on the surface of the fixing plate 4, a slide groove 15 is provided at one end of the sleeve 14, a damping bearing 16 is provided at one end of the slide groove 15, a screw 17 is inserted into the damping bearing 16, a moving plate 18 is screwed on the surface of the screw 17, a push plate 32 is provided on the side of the moving plate 18, and a sleeve 33 is sleeved on the surface of the sleeve 14;

[0031] When in use, the present invention sets the needle tip frame 4 on the bevel tooth plate 10. In addition, since the bevel tooth plate 10 is thin and can undergo elastic deformation, when the probe is tilted or unevenly stressed, more needle tips 34 can contact the battery poles, thereby reducing the contact resistance of the product and meeting the needs of excessive current. In addition, the height of the trapezoidal teeth 13 is set to be 0.2 mm lower than the height of the needle tip 34, which can prevent the single-sided needle tip 34 from being stressed when the initial pressing is relatively inclined, causing the needle tip 34 to be damaged due to elastic deformation. Embodiment 2

[0032] On the basis of the first embodiment, a fixing plate 4 is provided, a positioning plate 35 is provided on the surface of the fixing plate 4, the positioning plate 35 is fixed to the surface of the test head 1 by means of positioning bolts 40, the positioning plate 35 is in an "L"-shaped plate structure, two groups of positioning plates 35 are provided, the two groups of positioning plates 35 are symmetrically distributed about the copper needle 5, the beveled tooth plate 10 is tilted at a certain angle and fixed on the surface of the placement plate 9, the beveled tooth plate 10 is thin and can undergo elastic deformation at a certain angle, a spring sheet 36 is provided at the bottom of the beveled tooth plate 10, multiple groups of beveled tooth plates 10 are provided, the multiple groups of beveled tooth plates 10 are regularly arranged linearly about the surface of the placement plate 9, a fixing hole 37 is provided on the end face of the placement plate 9, and the placement plate 9 is sleeved on the fixing hole 37 On the fixed tube body 8, one end of the fixed tube body 8 is fixedly connected to the side of the vertical plate 7, a second threaded hole 38 is opened at the bottom of one end of the fixed tube body 8, one end of the second positioning bolt 12 can be screwed into the second threaded hole 38, and the second positioning bolt 12 can be screwed into the fixed tube body 8 to fix the placement plate 9, the bottom of the trapezoidal teeth 13 is fixedly connected to the surface of the second test head 3, the height of the trapezoidal teeth 13 is set to be 0.2mm lower than the height of the needle tip 34, one end of the positioning rod 11 is fixedly connected to the side of the test head 1, one end of the spring piece 36 is fixedly connected to the lower surface of the bevel tooth plate 10, and the other end of the spring piece 36 is fixedly connected to the surface of the placement plate 9, and the spring piece 36 is an arc-shaped plate structure;

[0033] When in use, the inclination angle of the bevel plate 10 can be utilized. In this way, when the probe for the blade battery is tilted or unevenly stressed, the inclined bevel plate 10 can also make more needle tips 34 contact the battery poles through its own elastic deformation. The setting of the spring piece 36 can help the bevel plate 10 to automatically reset after being squeezed, and also avoid the problem that the bevel plate 10 itself cannot be elastically deformed due to elastic failure. When the bevel plate 10 is damaged due to long-term use, the second positioning bolt 12 can be rotated to make one end of the second positioning bolt 12 disengage from the fixed tube body 8, so that the placement plate 9 can be removed from the fixed tube body 8 more conveniently. Embodiment 3

[0034] On the basis of the second embodiment, a damping bearing 16 is provided, the lower surface of the damping bearing 16 is fixedly connected to the bottom of the slide groove 15, one end of the screw 17 is inserted into the inner ring surface of the damping bearing 16, and the movable plate 18 can be moved up and down on the screw 17 by rotating the screw 17. A spring 39 is provided at one end of the sleeve 33, and the spring 39 is sleeved on the sleeve 14. One end of the spring 39 is fixedly connected to the bottom of the sleeve 33, and the other end of the spring 39 is fixedly connected to the surface of the fixed plate 4. One end of the sleeve 14 is fixedly connected to the surface of the fixed plate 4. An insulating sleeve 41 is provided at one end of the sleeve 14, and the copper needle 5 passes through the insulating sleeve 41 and is inserted into the sleeve 14. The push plate 32 is an annular plate structure, one end of the movable plate 18 is fixedly connected to the inner side surface of the push plate 32, and the push plate 32 is located on the upper surface of the sleeve 33;

[0035] When in use, the movable plate 18 can be moved upward on the screw 17 by rotating the screw 17, and then the push plate 32 can be driven to move up and down, so that the push plate 32 can press the sleeve 33 to different degrees, and the pressure on the sleeve 33 can be adjusted, and then the spring 39 can be squeezed to better fit the battery electrode to be tested.

[0036] In actual use, the present invention sets the needle tip frame 4 on the bevel tooth plate 10. In addition, since the bevel tooth plate 10 is thin and can undergo elastic deformation, when the probe is tilted or unevenly stressed, more needle tips 34 can contact the battery poles, thereby reducing the contact resistance of the product and meeting the needs of excessive current. In addition, the height of the trapezoidal teeth 13 is set to be 0.2 mm lower than the height of the needle tip 34, which can prevent the single-sided needle tip 34 from being stressed when the initial pressing is relatively oblique, causing the needle tip 34 to be damaged due to elastic deformation.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-resistance probe for a blade battery, comprising a test head (1), a through hole (2) being provided on the surface of the test head (1), a second test head (3) being arranged in the through hole (2), a fixing plate (4) being arranged at one end of the through hole (2), a copper needle (5) being inserted in the fixing plate (4), and characterized in that: The test head (1) has a placement groove (6) at one end, a vertical plate (7) at one end of the placement groove (6), a fixed tube body (8) at the side of the vertical plate (7), a placement plate (9) sleeved on the surface of the fixed tube body (8), a beveled tooth plate (10) at the surface of the placement plate (9), a needle tip (34) at the surface of the beveled tooth plate (10), a positioning rod (11) at the side of the test head (1), a threaded hole (42) at the surface of the positioning rod (11), a second positioning bolt (12) being screwed into the threaded hole (42); A second test head (3), the surface of the second test head (3) is provided with trapezoidal teeth (13), the surface of the fixed plate (4) is provided with a sleeve (14), one end of the sleeve (14) is provided with a slide groove (15), one end of the slide groove (15) is provided with a damping bearing (16), a screw rod (17) is inserted into the damping bearing (16), a moving plate (18) is screwed to the surface of the screw rod (17), a push plate (32) is provided on the side of the moving plate (18), and a sleeve (33) is sleeved on the surface of the sleeve (14); A positioning plate (35) is provided on the surface of the fixing plate (4), and the positioning plate (35) is fixed to the surface of the test head (1) by means of positioning bolts (40). The positioning plate (35) is an "L"-shaped plate structure. Two groups of positioning plates (35) are provided, and the two groups of positioning plates (35) are symmetrically distributed about the copper needle (5); The beveled tooth plate (10) is fixed on the surface of the placement plate (9) at a certain angle. The beveled tooth plate (10) is relatively thin and can undergo elastic deformation at a certain angle. A spring sheet (36) is provided at the bottom of the beveled tooth plate (10). The beveled tooth plate (10) is provided with a plurality of groups. The plurality of groups of beveled tooth plates (10) are regularly arranged linearly with respect to the surface of the placement plate (9). A fixing hole (37) is provided on the end surface of the placement plate (9). The placement plate (9) is sleeved on the fixed tube body (8) using the fixing hole (37). One end of the fixed tube body (8) is fixedly connected to the side of the vertical plate (7); a second threaded hole (38) is provided at the bottom of one end of the fixed tube body (8); one end of the second positioning bolt (12) can be screwed into the second threaded hole (38); the second positioning bolt (12) can be screwed into the fixed tube body (8) to fix the placement plate (9); The lower surface of the damping bearing (16) is fixedly connected to the bottom of the slide groove (15), and one end of the screw rod (17) is inserted into the inner ring surface of the damping bearing (16). The movable plate (18) can be moved up and down on the screw rod (17) by rotating the screw rod (17); A spring (39) is provided at one end of the sleeve (33), the spring (39) is sleeved on the sleeve (14), one end of the spring (39) is fixedly connected to the bottom of the sleeve (33), and the other end of the spring (39) is fixedly connected to the surface of the fixing plate (4); The bottom of the trapezoidal teeth (13) is fixedly connected to the surface of the second test head (3), and the height of the trapezoidal teeth (13) is set to be 0.2 mm lower than the height of the needle tip (34); One end of the sleeve (14) is fixedly connected to the surface of the fixed plate (4), one end of the sleeve (14) is provided with an insulating sleeve (41), and the copper needle (5) passes through the insulating sleeve (41) and is inserted into the sleeve (14); The push plate (32) is an annular plate-shaped structure, one end of the moving plate (18) is fixedly connected to the inner side surface of the push plate (32), and the push plate (32) is located on the upper surface of the sleeve (33).

2. The low-resistance probe for blade battery according to claim 1, characterized in that: One end of the positioning rod (11) is fixedly connected to the side of the test head (1), one end of the spring sheet (36) is fixedly connected to the lower surface of the bevel tooth plate (10), and the other end of the spring sheet (36) is fixedly connected to the surface of the placement plate (9), and the spring sheet (36) is an arc-shaped plate-like structure.

Images