Positioning clamp and testing equipment

Abstract

The utility model provides a positioning clamp and test equipment. One side of the positioning clamp is provided with a first positioning groove, the first positioning groove is used for accommodating and limiting the battery, the opposite other side of the positioning clamp is provided with a second positioning groove, the second positioning groove is communicated with the first positioning groove, and the second positioning groove is used for accommodating and limiting the first probe structure. The first probe structure comprises a first probe seat and a first probe, a second probe structure is arranged on the side, away from the first probe structure, of the battery, the second probe structure comprises a second probe seat and a second probe, and the first probe is further used for being arranged right corresponding to the second probe. The orthographic projection of the first probe on the battery is located in the pole of the battery, so that the orthographic projection of the second probe on the battery is also located in the pole. According to the positioning clamp provided by the invention, the relative positions of the battery and the probes are limited, so that the positive probe can be accurately propped against the pole of the battery, the negative probe is propped against the shell of the battery, and the risk of short circuit of the battery in the formation process is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of batteries, and specifically relates to a positioning fixture and a testing device. Background Art

[0002] In the production of batteries, the performance of the batteries is generally activated through a forming process, and a preliminary capacity test and screening are carried out on the batteries. The fixture used in the forming process usually includes a positive probe structure and a negative probe structure. Generally, operators visually align the positive and negative probe structures with the positive and negative electrodes of the battery respectively. However, the pole column of a button battery is the positive electrode, and the outer shell is the negative electrode. The area of the positive electrode is small and the gap between the positive and negative electrodes of the battery is small. When manually aligning visually, the position of the positive probe is likely to deviate, resulting in a short circuit of the battery. Summary of the Utility Model

[0003] In view of this, in the first aspect of this application, a positioning fixture is provided. A first positioning groove is provided on one side of the positioning fixture. The first positioning groove is used to accommodate and limit the battery. A second positioning groove is provided on the opposite side of the positioning fixture. The second positioning groove communicates with the first positioning groove. The second positioning groove is used to accommodate and limit a first probe structure. The first probe structure includes a first probe base and a first probe. A second probe structure is provided on the side of the battery facing away from the first probe structure. The second probe structure includes a second probe base and a second probe. The first probe is also used to be correspondingly arranged with the second probe. The orthographic projection of the first probe on the battery is located within the pole column of the battery, so that the orthographic projection of the second probe on the battery is also located within the pole column.

[0004] The positioning fixture provided in the first aspect of this application makes the positional relationship between the battery and the positioning fixture relatively fixed through the first positioning groove, and makes the positional relationship between the first probe structure and the positioning fixture relatively fixed through the second positioning groove, thereby realizing the relatively fixed positional relationship between the battery and the first probe.

[0005] At the same time, the first probe is made to face the second probe, and the orthographic projection of the first probe is within the pole column. Therefore, the orthographic projection of the second probe must also be within the pole column. So in the forming process, one of the first probe or the second probe can accurately abut against the pole column of the battery, and the other can abut against the outer shell of the battery, avoiding the short circuit of the battery.

[0006] Moreover, since the battery does not move randomly relative to the probe during the forming process test, the probe can stably abut against the pole column throughout the test process, ensuring good contact between the probe and the pole column during the test, improving the accuracy and reliability of the battery forming test. And the structure of the positioning fixture is exquisitely designed and simple, which is convenient for manufacturing and maintenance, thereby reducing the production cost.

[0007] Wherein, the positioning fixture is provided with a through hole, the through hole passes through the bottom wall of the first positioning groove and the top wall of the second positioning groove, and the through hole is used for the first probe to pass through.

[0008] Wherein, the through hole is used to correspond to the pole.

[0009] The aperture of the first positioning groove is larger than the aperture of the second positioning groove, so that a step structure can be formed at the connection point between the first positioning groove and the second positioning groove.

[0010] The positioning fixture includes a first sub-positioning fixture and a second sub-positioning fixture that are detachably connected. The first sub-positioning fixture and the second sub-positioning fixture can be arranged on opposite sides of the battery to surround and form the first positioning groove and the second positioning groove.

[0011] Wherein, when the battery is arranged in the first positioning groove, the battery can protrude from the first positioning groove.

[0012] The second aspect of the present application provides a testing device, which includes a first probe structure, a second probe structure, and a positioning fixture as provided in the first aspect of the present application, wherein the first positioning groove of the positioning fixture is used to accommodate and limit the battery, the first probe structure is limited in the second positioning groove of the positioning fixture, the second probe structure is arranged on the side of the battery away from the first probe structure, and the first probe structure and the second probe structure are arranged in direct correspondence.

[0013] The test equipment provided in the second aspect of the present application, by adopting the positioning fixture provided in the first aspect of the present application, enables the positive electrode probe to be accurately held against the battery pole, and the negative electrode probe to be held against the battery shell. At the same time, the positioning fixture also limits the position of the battery and the probe, so that the battery and the probe will not move randomly during the test, thereby improving the consistency of battery performance and making the detection results of the formation process more accurate and reliable.

[0014] The first probe of the first probe structure is used to approach the pole of the battery, or the second probe of the second probe structure is used to approach the pole of the battery.

[0015] The test equipment meets at least one of the following conditions:

[0016] The first probe structure further includes a first elastic member, the first elastic member connects the first probe seat and the first probe, when the first probe abuts against the battery, a portion of the first probe can be retracted into the first probe seat, and the first elastic member is in a compressed state;

[0017] The second probe structure further includes a second elastic member, the second elastic member connecting the second probe base and the second probe. When the second probe abuts against the battery, a part of the second probe can retract into the second probe base, and the second elastic member is in a compressed state.

[0018] Wherein, when the first probe structure is disposed in the second positioning groove, the end of the first probe can be disposed in the first positioning groove and abut against the battery, so that a gap is provided between the battery and the bottom wall of the first positioning groove; when the second probe abuts against the battery, the battery can be supported on the bottom wall of the first positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0020] Figure 1 It is a schematic perspective view of a positioning fixture in an embodiment of the present application.

[0021] Figure 2 It is Figure 1 A schematic perspective view of another angle of the shown positioning fixture.

[0022] Figure 3 It is Figure 1 A schematic cross-sectional view of the shown positioning fixture.

[0023] Figure 4 It is a schematic perspective view of the positioning fixture, the first probe structure, the second probe structure, and the battery cooperating with each other in an embodiment of the present application.

[0024] Figure 5 It is Figure 4 A schematic cross-sectional view of the positioning fixture, the first probe structure, the second probe structure, and the battery cooperating with each other as shown.

[0025] Figure 6 It is Figure 5 A schematic cross-sectional view of the first probe structure and the second probe structure abutting against the battery as shown.

[0026] Figure 7 It is a schematic cross-sectional view of a positioning fixture in another embodiment of the present application.

[0027] Figure 8 It is a schematic perspective view of a positioning fixture in yet another embodiment of the present application.

[0028] Figure 9 It is Figure 8 A schematic perspective view of another angle of the shown positioning fixture.

[0029] Figure 10 In another embodiment of the present application Figure 4 The cross-sectional schematic diagram when the positioning fixture, the first probe structure, the second probe structure, and the battery cooperate as shown.

[0030] Label description:

[0031] Positioning fixture - 1, battery - 2, test equipment - 3, first positioning groove - 11, bottom wall - 110, second positioning groove - 12, top wall - 120, through hole - 13, step structure - 14, first sub-positioning fixture - 15, second sub-positioning fixture - 16, terminal post - 21, outer shell - 22, first probe structure - 30, first probe - 31, first probe seat - 32, first elastic member - 33, second probe structure - 40, second probe - 41, second probe seat - 42, second elastic member - 43. Specific embodiments

[0032] The following are the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present application.

[0033] Before introducing the technical solution provided by the present application, the technical problems in the related art will be introduced in detail.

[0034] With the miniaturization and portability of electronic devices, button batteries have been widely used in small electronic devices such as electronic watches, calculators, and Bluetooth earphones due to their small size, light weight, high energy density, etc. In the production process of button batteries, the formation process is a very important link, and its main purpose is to activate the performance of the battery by charging the battery, and to conduct preliminary capacity testing and screening on the battery.

[0035] The fixtures used in the current formation process usually include a positive electrode probe structure and a negative electrode probe structure. Operators generally visually align the positive and negative electrode probe structures with the positive and negative electrodes of the battery respectively. However, the terminal post of the button battery is the positive electrode, and the outer shell is the negative electrode. The area of the positive electrode is small and the gap between the positive and negative electrodes of the battery is small. When manually aligning visually, the position of the positive electrode probe is prone to deviation. When the probe position is incorrect, it is very easy to directly conduct the positive and negative electrodes, resulting in battery short circuit and even battery damage, thus affecting the performance and safety of the battery. At the same time, the current fixture cannot ensure the relative position stability between the battery and the probe during the test, thus affecting the accuracy and consistency of the test results.

[0036] In view of this, to solve the above problems, the present application provides a positioning fixture. Please refer to Figures 1-6 , Figure 1 The three-dimensional structure schematic diagram of the positioning fixture in an embodiment of the present application.Figure 2 is Figure 1 a schematic perspective view of another angle of the positioning fixture shown in Figure 1 . Figure 3 is Figure 1 a schematic cross-sectional view of the positioning fixture shown in Figure 1 . Figure 4 is a schematic perspective view of the positioning fixture, the first probe structure, the second probe structure, and the battery in cooperation in an embodiment of the present application. Figure 5 is Figure 4 a schematic cross-sectional view of the positioning fixture, the first probe structure, the second probe structure, and the battery in cooperation shown in Figure 4 . Figure 6 is Figure 5 a schematic cross-sectional view of the first probe structure and the second probe structure abutting against the battery shown in Figure 5 .

[0037] One side of the positioning fixture 1 provided in this embodiment is provided with a first positioning groove 11. The first positioning groove 11 is used to accommodate and limit the battery 2. The other side of the positioning fixture 1 opposite to it is provided with a second positioning groove 12. The second positioning groove 12 communicates with the first positioning groove 11. The second positioning groove 12 is used to accommodate and limit the first probe structure 30. The first probe structure 30 includes a first probe base 32 and a first probe 31. A second probe structure 40 is provided on the side of the battery 2 facing away from the first probe structure 30. The second probe structure 40 includes a second probe base 42 and a second probe 41. The first probe 31 is also used to be correspondingly arranged with the second probe 41. The orthographic projection of the first probe 31 on the battery 2 is located within the pole column 21 of the battery 2, so that the orthographic projection of the second probe 41 on the battery 2 is also located within the pole column 21.

[0038] The positioning fixture 1 is mainly applied to the formation process of the battery 2. When in use, it is mainly used to install and limit the battery 2 and the first probe structure 30. One side of the positioning fixture 1 in this embodiment has a first positioning groove 11, that is, one surface of the positioning fixture 1 has a recessed groove, and this groove is the first positioning groove 11. The first positioning groove 11 is used to accommodate the battery 2. When in use, part or all of the battery 2 can be installed in the first positioning groove 11. At the same time, the first positioning groove 11 also has a limiting effect on the battery 2, that is, after the battery 2 is installed in the first positioning groove 11, the battery 2 cannot move freely relative to the positioning fixture 1. For example, the battery 2 can be limited by methods such as contour positioning, gluing, tying, and increasing friction.

[0039] Optionally, the present embodiment uses a contour positioning method to position the battery 2. For example, the first positioning groove 11 can be set to a square, triangle or other shape, so that the circular circumferential side wall of the battery 2 is inscribed in the side wall of the positioning groove, and the battery 2 is limited by a plurality of side walls that jointly support the battery 2. The present embodiment only schematically illustrates that the first positioning groove 11 is circular, and the aperture of the first positioning groove 11 is the same as the outer diameter of the battery 2 to position the battery 2.

[0040] The battery 2 is used to be installed in the positioning fixture 1 and perform charge and discharge tests. The battery 2 includes a pole 21 and an integral shell 22 of the battery 2. The pole 21 of the battery 2 is the positive pole of the battery 2, and the shell 22 of the battery 2 is the negative pole of the battery 2. The shell 22 of the battery 2 has a top surface and a bottom surface, and a peripheral side surface that is curved to connect the top surface and the bottom surface, and the pole 21 protrudes from the top surface. The area of the pole 21 is small, and when it protrudes from the top surface, that is, when it protrudes from the shell 22 of the battery 2, the gap between the pole 21 and the shell 22 is small, that is, the positive pole area of the battery 2 is small, and the distance between the positive and negative poles of the battery 2 is small.

[0041] A second positioning groove 12 is provided on the other side opposite to the positioning fixture 1, that is, the positioning fixture 1 has a second positioning groove 12 on the side away from the first positioning groove 11. In other words, the positioning fixture 1 has a second positioning groove 12 on the back of the first positioning groove 11. The second positioning groove 12 is connected to the first positioning groove 11, that is, objects are allowed to pass between the first positioning groove 11 and the second positioning groove 12. The second positioning groove 12 is used to accommodate the first probe structure 30, that is, part or all of the first probe structure 30 can be installed in the second positioning groove 12. At the same time, the second positioning groove 12 can also limit the first probe structure 30, that is, after the positioning fixture 1 is assembled with the first probe structure 30, the positioning fixture 1 and the first probe structure 30 cannot move at will, for example, the first probe structure 30 can be limited by contour positioning, gluing, binding, increasing friction, etc. This embodiment is only schematically described by the contour positioning method, that is, the aperture of the second positioning groove 12 is the same as the outer diameter of the first probe structure 30 to limit the first probe structure 30.

[0042] The first probe structure 30 includes a first probe 31 and a first probe seat 32. The first probe 31 is used to approach and abut the battery 2 so that the first probe 31 is electrically connected to the battery 2, thereby realizing the charge and discharge test of the battery 2. The first probe 31 is generally a thin cylinder, and the surface used to contact the battery 2 is generally smaller than the area of the pole 21. The first probe seat 32 is used to limit the first probe 31. For example, the first probe seat 32 has a groove that limits the position of the first probe 31, so that after the first probe 31 is installed on the first probe seat 32, it cannot move freely relative to the first probe seat 32, and can only move slightly along the arrangement direction of the first probe 31 and the first probe seat 32, and cannot be separated from the first probe seat 32, that is, Figure 5As shown, the first probe 31 can only move slightly up and down.

[0043] In addition to the first probe structure 30, the probe structure may further include a second probe structure 40. The second probe structure 40 includes a second probe 41 and a second probe base 42. As for the specific structure of the second probe base 42 and the functions of the second probe 41 and the second probe base 42, they are the same as those of the first probe 31 assembly, and will not be elaborated herein in this embodiment. The second probe structure 40 is disposed on the side of the battery 2 away from the first probe structure 30, that is to say, the battery 2 is arranged between the first probe structure 30 and the second probe structure 40. At the same time, the first probe 31 is used to approach and abut against the battery 2, and the second probe 41 is also used to approach and abut against the battery 2. Therefore, both the first probe 31 and the second probe 41 point to the battery 2.

[0044] Moreover, based on the fact that both the first probe 31 and the second probe 41 point to the battery 2 in this embodiment, the first probe 31 can be made to face the second probe 41, and the orthographic projection of the first probe 31 is within the terminal post 21. Therefore, the orthographic projection of the second probe 41 must also be within the terminal post 21. That is to say, when the terminal post 21 of the battery 2 faces the second probe structure 40 and is limited in the positioning fixture 1, the first probe 31 abuts against the corresponding outer shell 22 on the back of the terminal post 21, and the second probe 41 can stably abut against the terminal post 21. Or when the terminal post 21 of the battery 2 faces the first probe structure 30 and is limited in the positioning fixture 1, the first probe 31 stably abuts against the terminal post 21, and the second probe 41 abuts against the corresponding outer shell 22 on the back of the terminal post 21.

[0045] Specifically, when the terminal post 21 of the battery 2 faces the first probe structure 30 and is limited and clamped in the positioning fixture 1, at this time, the first probe 31 abuts against the terminal post 21 of the battery 2, the first probe 31 is the positive electrode probe, and the second probe 41 abuts against the outer shell 22 of the battery 2, and the second probe 41 is the negative electrode probe. When the terminal post 21 of the battery 2 faces the second probe structure 40 and is limited and clamped in the positioning fixture 1, at this time, the second probe 41 abuts against the terminal post 21 of the battery 2, the second probe 41 is the positive electrode probe, and the first probe 31 abuts against the outer shell 22 of the battery 2, and the first probe 31 is the negative electrode probe.

[0046] In this embodiment, the relative position relationship between the battery 2 and the positioning fixture 1 is relatively fixed through the first positioning groove 11, and the relative position relationship between the first probe structure 30 and the positioning fixture 1 is relatively fixed through the second positioning groove 12. That is, through the positioning fixture 1, the consistency of the positions of the battery 2 and the positioning fixture 1, and the positioning fixture 1 and the first probe 31 is ensured at the same time, so as to realize the relative fixed position relationship between the battery 2 and the first probe 31.

[0047] At the same time, this embodiment makes the first probe 31 face the second probe 41, and the orthographic projection of the first probe 31 is within the pole 21, so the orthographic projection of the second probe 41 must also be within the pole 21. That is to say, when the first probe 31 is against the shell 22 corresponding to the back of the pole 21, the second probe 41 can be stably against the pole 21, or when the first probe 31 is stably against the pole 21, the second probe 41 is against the shell 22 corresponding to the back of the pole 21. Therefore, in the formation process, one of the first probe 31 or the second probe 41 can accurately against the pole 21 of the battery 2, and the other can be against the shell 22 of the battery 2, thereby avoiding a short circuit of the battery 2.

[0048] Furthermore, since the battery 2 will not move randomly relative to the probe during the formation process test, the probe can be stably held against the pole 21 during the entire test process, ensuring good contact between the probe and the pole 21 during the test process, thereby improving the accuracy and reliability of the formation test of the battery 2. Moreover, the positioning fixture 1 has a sophisticated and simple structural design, is easy to manufacture and maintain, and thus reduces the production cost.

[0049] In order to verify the effectiveness of the positioning fixture 1, this embodiment also performs charging and discharging tests on two groups of batteries 2 under the same test conditions, and records the current, voltage and other data during the test. In the test process of a group of tests that does not use the positioning fixture 1 of this embodiment, three short circuits occurred, and the accuracy and consistency of the test results are poor. However, in the test of a group of tests using the positioning fixture 1 of this embodiment, there was no short circuit phenomenon of the battery 2 throughout the whole process, the test results were accurate and reliable, and the performance activation effect of the battery 2 was good, so that the consistency of the performance of the battery 2 was significantly improved.

[0050] In summary, in this embodiment, the battery 2 is limited to the positioning fixture 1 and the first probe structure 30 is limited to the positioning fixture 1 by setting the first positioning groove 11 and the second positioning groove 12 of the positioning fixture 1, so that the positions of the battery 2 and the first probe 31 are relatively fixed. In addition, the first probe 31 is limited within the positive projection of the pole 21 and the first probe 31 is directly opposite to the second probe 41, so that the first probe 31 or the second probe 41 can be accurately positioned to the pole 21 of the battery 2, and the relative fixed position of the battery 2 and the probe also improves the stability of the connection between the battery 2 and the probe.

[0051] Please refer again Figure 3 , Figure 5 , Figure 6 In this embodiment, the positioning fixture 1 is provided with a through hole 13, and the through hole 13 passes through the bottom wall 110 of the first positioning groove 11 and the top wall 120 of the second positioning groove 12, and the through hole 13 is used for the first probe 31 to pass through.

[0052] As can be seen from the above, the first positioning groove 11 is connected to the second positioning groove 12. In this embodiment, the through hole 13 penetrates the bottom wall 110 of the first positioning groove 11 and the top wall 120 of the second positioning groove 12 to connect the first positioning groove 11 and the second positioning groove 12. The bottom wall 110 of the first positioning groove 11 is the side of the first positioning groove 11 away from its opening direction, that is, Figure 3 The bottom surface of the first positioning groove 11 is the bottom wall 110 of the first positioning groove 11. The top wall 120 of the second positioning groove 12 is the side of the second positioning groove 12 away from its opening direction, that is, Figure 3 The top surface of the second positioning groove 12 is the top wall 120 of the second positioning groove 12. The through hole 13 is used to allow the first probe 31 to pass through, that is, the first probe 31 of the first probe structure 30 installed in the second positioning groove 12 can pass from the second positioning groove 12 to the first positioning groove 11 through the through hole 13, that is, the first probe 31 passes through the through hole 13 and passes from the second positioning groove 12 to the first positioning groove 11.

[0053] In this embodiment, the first positioning groove 11 and the second positioning groove 12 are connected through the through hole 13, and the first probe 31 passes through the through hole 13 and enters the first positioning groove 11 from the second positioning groove 12, so that the first probe 31 can pass through the through hole 13 and abut against the battery 2, so that the probe abuts and electrically connects to the battery 2.

[0054] Please refer again Figure 5 In this embodiment, the through hole 13 is used to correspond to the pole 21.

[0055] From the above content, it can be known that the first positioning groove 11 and the second positioning groove 12 can be connected through the through hole 13, and the first probe 31 penetrates from the second positioning groove 12 into the first positioning groove 11 through the through hole 13 and abuts against and electrically connects to the battery 2. In this embodiment, on the basis of providing the through hole 13, the through hole 13 can also be made to correspond to the pole 21, that is, Figure 5 The through hole 13 is shown to be directly below the pole 21 . Optionally, the through hole 13 may be coaxially arranged with the pole 21 .

[0056] In this embodiment, the through hole 13 is aligned with the pole 21 , that is, the first probe 31 is opposite to the pole 21 , and the through hole 13 is also opposite to the pole 21 , so that the first probe 31 can pass through the through hole 13 and abut against the battery 2 , so that the first probe 31 will not contact the through hole 13 when passing through the through hole 13 , thereby reducing the risk of damage to the first probe 31 .

[0057] Please refer to Figure 7 , Figure 7 This is a cross-sectional schematic diagram of a positioning fixture in another embodiment of the present application. In this embodiment, the aperture of the first positioning groove 11 is larger than the aperture of the second positioning groove 12, so that a step structure 14 can be formed at the connection between the first positioning groove 11 and the second positioning groove 12.

[0058] As can be seen from the above, the first positioning groove 11 communicates with the second positioning groove 12. On this basis, in this embodiment, the bottom wall 110 of the first positioning groove 11 can coincide with the top wall 120 of the second positioning groove 12, and the aperture of the first positioning groove 11 is larger than that of the second positioning groove 12, so that a stepped structure can be formed at the position where the first positioning groove 11 and the second positioning groove 12 communicate.

[0059] When the bottom wall 110 of the first positioning groove 11 coincides with the top wall 120 of the second positioning groove 12, the first positioning groove 11 communicates directly with the second positioning groove 12. At this time, the aperture of the first positioning groove 11 can be made larger than that of the second positioning groove 12. That is, as Figure 7 shown, the aperture of the upper groove is larger than that of the lower groove, and the two grooves communicate directly, so that the first positioning groove 11 and the second positioning groove 12 together form a through hole 13 with a stepped structure 14, and the battery 2 can abut against the stepped structure 14.

[0060] In this embodiment, by making the aperture of the first positioning groove 11 larger than that of the second positioning groove 12 and the first positioning groove 11 communicating directly with the second positioning groove 12, the first positioning groove 11 and the second positioning groove 12 together form a through hole 13 that penetrates the positioning fixture 1 and has a stepped structure 14. Further, the battery 2 located in the first positioning groove 11 can abut against the stepped structure 14. The first probe 31 and the stepped structure 14 together abut against and carry the battery 2, reducing the pressure exerted by the battery 2 on the first probe 31 and reducing the risk of the first probe 31 bending.

[0061] Please refer to Figures 8-9 together with Figure 8 which is a schematic perspective view of the positioning fixture in another embodiment of the present application. Figure 9 is Figure 8 a schematic perspective view of another angle of the positioning fixture shown in. In this embodiment, the positioning fixture 1 includes a first sub-positioning fixture 15 and a second sub-positioning fixture 16 that are detachably connected. The first sub-positioning fixture 15 and the second sub-positioning fixture 16 can be arranged on opposite sides of the battery 2 and enclose to form the first positioning groove 11 and the second positioning groove 12.

[0062] In this embodiment, the positioning fixture 1 can be divided into a first sub-positioning fixture 15 and a second sub-positioning fixture 16, and the first sub-positioning fixture 15 and the second sub-positioning fixture 16 are respectively arranged on the left and right sides of the battery 2. As Figure 8 shown, the upper half of the first sub-positioning fixture 15 and the upper half of the second sub-positioning fixture 16 together enclose to form the first positioning groove 11. As Figure 9As shown, the lower half of the first sub-positioning fixture 15 and the lower half of the second sub-positioning fixture 16 are together arranged to form the second positioning groove 12. The first sub-positioning fixture 15 and the second sub-positioning fixture 16 are detachably connected. As for the specific connection method, this embodiment is not limited here. For example, they can be connected and assembled into one by means of slots, bolts, bonding, etc.

[0063] By dividing the positioning fixture 1 into the first sub-positioning fixture 15 and the second sub-positioning fixture 16, the positioning fixture 1 is more flexible during installation. The positioning fixture 1 can clamp the first probe structure 30 from both sides, thereby achieving the installation of the positioning fixture 1 on the first probe structure 30, reducing the difficulty of operation.

[0064] Please refer again Figures 4-5 In this embodiment, when the battery 2 is disposed in the first positioning groove 11 , the battery 2 can protrude from the first positioning groove 11 .

[0065] From the above content, it can be known that the battery 2 is installed in the first positioning groove 11. On this basis, this embodiment can make the battery 2 protrude from the first positioning groove 11 when the battery 2 is installed in the first positioning groove 11. Figure 4 As shown, when the battery 2 is installed in the first positioning groove 11, the upper surface of the battery 2 can be higher than the upper surface of the positioning fixture 1. Specifically, the depth of the first positioning groove 11 can be made smaller than the thickness of the battery 2, so that when the battery 2 is installed in the first positioning groove 11, the upper half of the battery 2 protrudes from the first positioning groove 11, that is, protrudes from the surface of the positioning fixture 1.

[0066] By making the battery 2 protrude from the first positioning groove 11 when the battery 2 is installed in the positioning fixture 1 , it is easier to remove the battery 2 from the first positioning groove 11 after the test, thereby reducing the difficulty of operation.

[0067] Please refer again Figures 4-6 This embodiment provides a testing device 3, which includes a first probe structure 30, a second probe structure 40, and a positioning fixture 1 as provided in the above embodiment of the present application, wherein the first positioning groove 11 of the positioning fixture 1 is used to accommodate and limit the battery 2, the first probe structure 30 is limited in the second positioning groove 12 of the positioning fixture 1, the second probe structure 40 is arranged on the side of the battery 2 away from the first probe structure 30, and the first probe structure 30 and the second probe structure 40 are arranged in correspondence.

[0068] The test device 3 provided in this embodiment is mainly used for the formation process of the battery 2. The positive electrode probe is accurately held against the pole 21 of the battery 2 and the negative electrode probe is held against the shell 22 of the battery 2 through the positioning fixture 1, and then the battery 2 is charged and discharged.

[0069] The test device 3 mainly includes a first probe structure 30, a second probe structure 40, and a positioning fixture 1. The specific structures and functions of the first probe structure 30, the second probe structure 40, and the positioning fixture 1 have been described in detail above, and will not be elaborated herein in this embodiment. By adopting the positioning fixture 1 provided in the above embodiment of the present application, the positive electrode probe in the test device 3 can accurately abut against the electrode post 21 of the battery 2, that is, the positive electrode of the battery 2, and the negative electrode probe can abut against the outer shell 22 of the battery 2, that is, the negative electrode of the battery 2. At the same time, the positioning fixture 1 also restricts the positions of the battery 2 and the probes, so that the battery 2 and the probes will not move randomly during the test process, improving the consistency of the performance of the battery 2 and making the detection results of the formation process more accurate and reliable.

[0070] Please refer to Figure 5 、 Figure 10 , Figure 10 in another embodiment of the present application Figure 4 is a cross-sectional schematic diagram when the positioning fixture, the first probe structure, the second probe structure, and the battery cooperate as shown. In this embodiment, the first probe 31 of the first probe structure 30 is used to approach the electrode post 21 of the battery 2, or the second probe 41 of the second probe structure 40 is used to approach the electrode post 21 of the battery 2.

[0071] In this embodiment, when the electrode post 21 of the battery 2 faces the first probe 31 assembly, that is, when the electrode post 21 is installed downward on the positioning fixture 1 as shown in Figure 10 , at this time, the first probe 31 is the positive electrode probe, which abuts against the electrode post 21 of the battery 2, that is, the positive electrode of the battery 2, and the second probe 41 of the second probe 41 assembly is the negative electrode probe, which abuts against the outer shell 22 of the battery 2, that is, the negative electrode of the battery 2. When the electrode post 21 of the battery 2 faces the second probe 41 assembly, that is, when the electrode post 21 is installed upward on the positioning fixture 1 as shown in Figure 5 , at this time, the second probe 41 is the positive electrode probe, which abuts against the electrode post 21 of the battery 2, that is, the positive electrode of the battery 2, and the first probe 31 of the first probe 31 assembly is the negative electrode probe, which abuts against the outer shell 22 of the battery 2, that is, the negative electrode of the battery 2.

[0072] In this embodiment, by flexibly setting the positive electrode probe and the negative electrode probe, the test assembly can adapt to two situations where the electrode post 21 of the battery 2 is placed upward or the electrode post 21 is placed downward, improving the applicability of the test device 3.

[0073] Please refer to again Figures 5-6, in this embodiment, the test device 3 satisfies at least one of the following conditions: The first probe structure 30 further includes a first elastic member 33, and the first elastic member 33 connects the first probe base 32 and the first probe 31. When the first probe 31 abuts against the battery 2, a part of the first probe 31 can retract into the first probe base 32, and the first elastic member 33 is in a compressed state. The second probe structure 40 further includes a second elastic member 43, and the second elastic member 43 connects the second probe base 42 and the second probe 41. When the second probe 41 abuts against the battery 2, a part of the second probe 41 can retract into the second probe base 42, and the second elastic member 43 is in a compressed state.

[0074] In this embodiment, the first probe structure 30 may include a first elastic member 33, and the first elastic member 33 is used for elastically connecting the first probe base 32 and the first probe 31. And when the first probe 31 abuts against the battery 2, the first elastic member 33 can be compressed, so that a part of the first probe 31 can retract into the first probe base 32. For example, the first elastic member 33 is a spring, and the side of the first probe base 32 close to the first probe 31 has a groove. One end of the spring is fixed in the groove, and the other end of the spring is sleeved and fixed on the first probe 31. A part of the probe is also arranged in the groove. When the first probe 31 abuts against the battery 2 and is pressed, the spring can contract so that a part of the first probe 31 can retract into the groove of the first probe base 32, that is, the part of the first probe 31 arranged in the groove becomes longer.

[0075] Similarly, the second probe structure 40 may also include a second elastic member 43, and the second elastic member 43 is used for elastically connecting the second probe base 42 and the second probe 41. When the second probe 41 abuts against the battery 2, the second elastic member 43 can be compressed, so that a part of the second probe 41 can retract into the second probe base 42. In this embodiment, there may be only the first elastic member 33, or only the second elastic member 43. Of course, there may also be both the first elastic member 33 and the second elastic member 43. This embodiment does not limit this here.

[0076] In this embodiment, by adding an elastic member to the probe structure, the positive and negative probes can undergo a certain contraction when abutting against the battery 2 and being pressed, that is, there is a certain elastic buffer when the positive and negative probes contact the battery 2, reducing the damage to the battery 2 caused by excessive pressure, and improving the production efficiency and product quality. At the same time, during the test process, even if there is a certain external force interference or the applied pressure is too large, the probe will not bend, enabling the positive and negative probes to maintain good contact with the positive and negative electrodes of the battery 2, and improving the accuracy of the test results.

[0077] Please refer to again Figures 5-6, in this embodiment, when the first probe structure 30 is disposed in the second positioning groove 12, the end of the first probe 31 can be disposed in the first positioning groove 11 and abut against the battery 2, so that a gap is provided between the battery 2 and the bottom wall 110 of the first positioning groove 11; when the second probe 41 abuts against the battery 2, the battery 2 can be supported on the bottom wall 110 of the first positioning groove 11.

[0078] As can be seen from the above, the first probe 31 abuts against the battery 2. On this basis, in this embodiment, the end of the first probe 31 can be disposed in the first positioning groove 11, that is, as Figure 5 shown, the top of the first probe 31 is disposed in the first positioning groove 11, which means that the first probe 31 penetrates from the second positioning groove 12 into the first positioning groove 11. The first probe 31 penetrates into the first positioning groove 11 and abuts against the battery 2, thereby providing a gap between the battery 2 and the bottom wall 110 of the first positioning groove 11, that is, the first probe 31 penetrates into the first positioning groove 11 and abuts against and supports the battery 2, so that there is a certain gap between the battery 2 and the bottom wall 110 of the first positioning groove 11, that is, at this time, the battery 2 does not contact the bottom wall 110 of the first positioning groove 11.

[0079] When the second probe 41 also abuts against the battery 2, the battery 2 is subjected to a downward pressure applied by the second probe 41, causing the battery 2 to move downward, and the first probe 31 also moves downward synchronously, as Figure 10 shown. Until the battery 2 abuts against the bottom wall 110 of the first positioning groove 11, that is, after the battery 2 contacts the bottom wall 110 of the first positioning groove 11, the battery 2 will no longer move downward.

[0080] In this embodiment, by disposing the end of the first probe 31 in the first positioning groove 11, when the battery 2 is disposed in the first positioning groove 11, it first contacts the first probe 31. During the process that the battery 2 is pressed to abut against the bottom wall 110 of the first positioning groove 11, the first probe 31 always abuts against the battery 2. This prevents the phenomenon that the first probe 31 has not contacted the battery 2 when the battery 2 is pressed against the bottom wall 110, so that the first probe 31 always abuts against the battery 2 during the test process, improving the accuracy of the test.

[0081] Moreover, in this embodiment, when the battery 2 moves toward the first probe 31, it can only move to abut against the bottom wall 110 of the first positioning groove 11, that is, when the battery 2 descends, it will be jointly supported by the bottom wall 110 of the first positioning groove 11 and the first probe 31, so that the first probe 31 will not bear too much pressure, preventing the first probe 31 from being bent and deformed.

[0082] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0083] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0084] In the present application, unless otherwise clearly defined and limited, terms such as "install", "connect", "join", "fix", etc. should be understood in a broad sense. For example, it can be a connection, a detachable connection, or integrated. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0085] The above has introduced in detail the content provided by the embodiments of the present application, and elaborated and explained the principles and embodiments of the present application. These explanations are only for helping to understand the method and its core idea of the present application. However, the content of this specification should not be construed as a limitation to the present application. Those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. These modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies.

Claims

1. A positioning fixture, characterized in that, One side of the positioning fixture is provided with a first positioning groove for accommodating and limiting the battery. On the opposite side of the positioning fixture, there is a second positioning groove communicating with the first positioning groove for accommodating and limiting the first probe structure. The first probe structure includes a first probe base and a first probe. On the side of the battery facing away from the first probe structure, there is a second probe structure including a second probe base and a second probe. The first probe is also arranged to correspond to the second probe. The orthographic projection of the first probe on the battery is located within the pole post of the battery, such that the orthographic projection of the second probe on the battery is also located within the pole post.

2. The positioning fixture according to claim 1, characterized in that, The positioning fixture is provided with a through hole penetrating the bottom wall of the first positioning groove and the top wall of the second positioning groove for the first probe to pass through.

3. The positioning fixture according to claim 2, characterized in that The through hole is arranged to correspond to the pole post.

4. The positioning fixture according to claim 1, characterized in that, The aperture of the first positioning groove is larger than that of the second positioning groove, so that a stepped structure can be formed at the connection between the first positioning groove and the second positioning groove.

5. The positioning fixture according to claim 1, characterized in that The positioning fixture includes a first sub-positioning fixture and a second sub-positioning fixture that are detachably connected. The first sub-positioning fixture and the second sub-positioning fixture can be arranged on opposite sides of the battery and enclose to form the first positioning groove and the second positioning groove.

6. The positioning fixture according to claim 1, characterized in that, When the battery is arranged in the first positioning groove, the battery can protrude from the first positioning groove.

7. A test device, characterized in that, The testing device includes a first probe structure, a second probe structure, and the positioning fixture according to any one of claims 1-6. The first positioning groove of the positioning fixture is used for accommodating and limiting the battery. The first probe structure is limited in the second positioning groove of the positioning fixture. The second probe structure is arranged on the side of the battery facing away from the first probe structure, and the first probe structure and the second probe structure are arranged to correspond to each other.

8. The test device according to claim 7, wherein The first probe of the first probe structure is used to approach the pole post of the battery, or the second probe of the second probe structure is used to approach the pole post of the battery.

9. The test device according to claim 7, wherein, The testing device satisfies at least one of the following conditions: The first probe structure further includes a first elastic member connecting the first probe base and the first probe. When the first probe abuts against the battery, a part of the first probe can retract into the first probe base, and the first elastic member is in a compressed state. The second probe structure further includes a second elastic member connecting the second probe base and the second probe. When the second probe abuts against the battery, a part of the second probe can retract into the second probe base, and the second elastic member is in a compressed state.

10. The test device according to claim 7, characterized in that, When the first probe structure is arranged in the second positioning groove, the end of the first probe can be arranged in the first positioning groove and abut against the battery, so that a gap is provided between the battery and the bottom wall of the first positioning groove. When the second probe abuts against the battery, the battery can be supported on the bottom wall of the first positioning groove.

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