Hardness detection equipment

Abstract

The utility model discloses hardness detection equipment which comprises a test assembly, the test assembly comprises a hardness tester and at least two connecting claws, the connecting claws are arranged on a test needle of the hardness tester, the at least two connecting claws are annularly arranged at intervals around the central axis of a battery to be detected, and each connecting claw comprises an abutting piece and a first elastic piece. The abutting piece is connected with the test needle through a first elastic piece, the first elastic piece can be bent, so that the abutting piece extends between a convex part of a pole of the to-be-tested battery and a sealing piece of the to-be-tested battery, the end part of the abutting piece abuts against the sealing piece, and the first elastic piece and the abutting piece are spaced from the pole; the first elastic piece is used for transmitting pressure borne by the abutting piece to the hardness tester. By arranging the first elastic piece and the abutting piece, the shape of the first elastic piece is changed in a bending mode, so that the abutting piece can extend into the position between the pole protruding part and the sealing piece by avoiding the limitation of the pole protruding part, and the basic performance test of the sealing piece after sintering is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a hardness detection device. Background Art

[0002] Reference Figure 1 The sealed battery includes a metal cap 100, a seal 200 and a metal pole 300, wherein the seal 200 may be made of glass, ceramic, plastic, etc. Taking glass as an example, the seal 200 is a glass member, and the seal 200 is annular. The seal 200 is arranged between the pole 300 and the cap 100, and the seal 200 is sealed and connected to the cap 100 and the pole 300 respectively. The seal 200 plays the role of sealing the gap and insulating the cap 100 and the pole 300. Therefore, the seal 200 is not only required to have a certain mechanical strength, but also required to have excellent air tightness, sealing strength and other characteristics under high vacuum.

[0003] At present, glass powder is usually placed in a mold (the mold contains the cap 100 and the pole 300 ), and the mold is sintered to obtain the battery cap 100 .

[0004] Since the basic performance of the sealant 200 is directly related to the performance of the battery, and in existing mechanical performance tests, hardness is one of the basic tests of glass performance, the hardness of the sealant 200 (glass) can be tested to assist in judging the performance of a batch of sealants 200 (glass).

[0005] However, the protrusion 400 at the end of the pole 300 will block the seal 200, and the hardness of the seal 200 cannot be directly measured. Only the corresponding characterization test can be performed on the glass powder sintered modules of the same batch. The sintered modules are only suitable for the same batch of glass powder to be sintered into standard size modules different from the seal 200 (glass) under the same sintering parameters. However, in the process of sintering the glass powder into the seal 200 (glass), there are differences in properties between the sintered modules and the glass powder. The hardness data of the glass powder cannot be directly characterized as the hardness data of the corresponding seal 200 (glass), and it is difficult to determine whether the seal 200 meets the design requirements. Utility Model Content

[0006] The purpose of the embodiment of the utility model is to provide a hardness testing device, which can perform hardness testing on the sealing part of the battery after sintering.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A hardness testing device is provided, comprising a test assembly, the test assembly comprising a hardness tester and at least two connecting claws, the connecting claws being arranged on a test needle of the hardness tester, at least two of the connecting claws being arranged in a ring-shaped interval around the central axis of a battery to be tested, the connecting claws comprising an abutment member and a first elastic member, the abutment member being connected to the test needle via the first elastic member, the first elastic member being bendable so that the abutment member extends between a convex portion of a pole of the battery to be tested and a sealing member of the battery to be tested, an end portion of the abutment member abuts against the sealing member, the first elastic member and the abutment member are both spaced from the pole, and the first elastic member is used to transmit the pressure exerted on the abutment member to the hardness tester.

[0009] As a preferred solution of the hardness testing equipment, the test assembly also includes a connecting piece, all of the connecting claws are arranged on the connecting piece, the connecting piece is connected to the test needle through a second elastic piece, and the elastic force direction of the second elastic piece is parallel to the axial direction of the test needle.

[0010] As a preferred solution of the hardness testing device, an escape groove is recessed at one end of the connecting member away from the testing needle, and the escape groove is used to accommodate the pole.

[0011] As a preferred solution of the hardness testing device, all the connecting claws are evenly arranged in a ring shape around the central axis of the battery to be tested.

[0012] As a preferred solution of the hardness testing device, the abutment member has a pointed head, and the end of the pointed head is tightly abutted against the sealing member.

[0013] As a preferred solution of the hardness testing device, the first elastic member is a spring, and the axis of the spring is parallel to the axis of the testing needle.

[0014] As a preferred solution of the hardness testing equipment, the testing needle is arranged vertically.

[0015] As a preferred solution of the hardness testing equipment, a level meter is provided on the test bench, and the level meter is used to detect the levelness of the test bench surface.

[0016] As a preferred solution of the hardness testing equipment, a fixing fixture is arranged on the test bench, and the fixing fixture includes at least two clamping plates, and the clamping plates have a clamping surface, and the clamping surface is a curved surface, and the clamping surface is in contact with the outer side surface of the battery to be tested.

[0017] As a preferred solution of the hardness testing equipment, the fixing fixture also includes a first adjustment component, and the first adjustment component is provided corresponding to each of the clamps. The first adjustment component includes a screw and a connecting seat, and the connecting seat is fixedly set on the test bench. The screw and the connecting seat are threadedly connected, and the end of the screw is hinged to the clamp, and the lower surface of the clamp is in contact with the table top of the test bench.

[0018] The beneficial effects of the utility model are as follows: by setting a first elastic member and abutment member, the first elastic member changes its own shape by bending, so that the abutment member can avoid the restriction of the pole protrusion and extend between the pole protrusion and the sealing member, so that the abutment member can contact and press tightly with the sintered sealing member, and the elastic forces at both ends of the first elastic member are consistent. When the abutment member transfers pressure to the first elastic member, the first elastic member will deform, and the elastic force generated by the first elastic member is consistent with the pressure exerted on the first elastic member. The first elastic member can transfer the pressure exerted on the abutment member to the hardness tester, and the hardness of the sintered sealing member is tested by the hardness tester to complete the basic performance test of the sintered sealing member; by setting at least two connecting claws arranged at annular intervals around the central axis of the battery to be tested, the influence of the bending of the first elastic member on the test results during the detection process can be reduced, thereby improving the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below based on the drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the cap, seal and pole described in the embodiment of the utility model.

[0021] Figure 2 This is a schematic diagram of the hardness testing equipment described in an embodiment of the utility model.

[0022] Figure 3 This is a schematic diagram of a battery to be tested and a test assembly according to an embodiment of the utility model.

[0023] Figure 4 for Figure 3 An enlarged schematic diagram of point A.

[0024] Figure 5 This is a schematic diagram of the test assembly and the second elastic member described in an embodiment of the utility model.

[0025] Figure 6 It is a top view and cross-sectional schematic diagram of the fixing fixture and the first adjustment component described in the embodiment of the utility model.

[0026] Figure 7 It is a schematic front view of the fixing fixture and the first adjustment component described in an embodiment of the utility model.

[0027] In the figure:

[0028] 1. Test bench; 2. Hardness tester; 21. Test needle; 3. Connecting claw; 31. First elastic member; 32. Abutting member; 321. Pointed head; 4. Connecting member; 41. Avoidance groove; 5. Second elastic member; 6. First adjustment component; 61. Screw rod; 62. Connecting seat; 7. Fixing fixture; 71. Clamping plate; 711. Clamping surface; 8. Second adjustment component; 81. Clamping member;

[0029] 100, cover cap; 200, seal; 300, pole; 400, convex part. DETAILED DESCRIPTION

[0030] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 2 to 3 As shown, the utility model provides a hardness testing device for testing the hardness of the sealing member 200 of the battery to be tested, referring to Figure 1The battery to be tested includes a cap 100, a seal 200 and a pole 300, wherein the cap 100 and the pole 300 are both made of metal, the seal 200 is a glass piece, that is, the seal 200 is made of glass, the seal 200 is annular, the pole 300 is arranged in the center hole of the seal 200, the seal 200 is arranged between the pole 300 and the cap 100, and the seal 200 is sealed and connected to the cap 100 and the pole 300 respectively. The hardness testing equipment includes a test bench 1 and a test assembly, the test bench 1 is used to place the battery to be tested, the test assembly includes a hardness tester 2 and at least two connecting claws 3, the hardness tester 2 is a hardness The connecting claw 3 is arranged on the test needle 21 of the hardness tester 2, and at least two connecting claws 3 are arranged in a ring-shaped interval around the central axis of the battery to be tested. The connecting claw 3 includes an abutment 32 and a first elastic member 31. The abutment 32 is connected to the test needle 21 through the first elastic member 31. The first elastic member 31 can be bent so that the abutment 32 extends between the protrusion 400 of the pole 300 of the battery to be tested and the sealing member 200 of the battery to be tested. The end of the abutment 32 abuts the sealing member 200. The first elastic member 31 and the abutment 32 are both spaced from the pole 300. The first elastic member 31 is used to transmit the pressure exerted on the abutment 32 to the hardness tester 2.

[0033] By setting the first elastic member 31 and the abutment member 32, the first elastic member 31 changes its shape by bending, so that the abutment member 32 can avoid the restriction of the protrusion 400 of the pole 300 and extend between the protrusion 400 of the pole 300 and the sealing member 200 (i.e., the glass member), so that the abutment member 32 can contact and press against the sintered sealing member 200. It can be understood that the elastic forces at both ends of the first elastic member 31 are consistent. When the abutment member 32 transfers the pressure to the first elastic member 31, the first elastic member 31 will deform. The elastic force generated by the first elastic member 31 is consistent with the pressure on the first elastic member 31. Then, the first elastic member 31 can transfer the pressure on the abutment member 32 to the hardness tester 2, and the hardness of the sintered sealing member 200 is tested by the hardness tester 2, so as to complete the basic performance test of the sintered sealing member 200. By setting at least two connecting claws 3 arranged at annular intervals around the central axis of the battery to be tested, the influence of the bending of the first elastic member 31 on the test results during the detection process can be reduced, thereby improving the accuracy of the data.

[0034] Furthermore, the test assembly also includes a connecting member 4, all the connecting claws 3 are arranged on the connecting member 4, the connecting member 4 is connected to the test needle 21 through the second elastic member 5, and the elastic force direction of the second elastic member 5 is parallel to the axial direction of the test needle 21. It can be understood that during the hardness test, the first elastic member 31 may bend to a certain extent, and the bent first elastic member 31 may generate a lateral shear force on the test needle 21 of the hardness tester 2. The second elastic member 5 can reduce the transmission of the lateral shear force and improve the accuracy of the hardness test.

[0035] In this embodiment, the first elastic member 31 is a spring, the axis of the spring is parallel to the axis of the test needle 21, and the second elastic member 5 can be a rubber block or a spring. The spring has a simple structure and is easy to process, which can reduce the cost of the hardness testing equipment.

[0036] Preferably, the test needle 21 is vertically arranged, then the first elastic member 31 and the second elastic member 5 are also correspondingly vertically arranged, and the axial direction of the first elastic member 31 and the second elastic member 5 is parallel to the vertical direction, so as to avoid the first elastic member 31 being bent due to its own weight of the abutment member 32, and also avoid the second elastic member 5 being bent due to its own weight of the connecting member 4 and the connecting claw 3.

[0037] In this embodiment, the end of the connector 4 away from the test needle 21 is recessed to be provided with an escape groove 41, and the escape groove 41 is used to accommodate the pole 300. By providing the escape groove 41, when the test needle 21 drives the test assembly to be pressed down, the escape groove 41 can accommodate a part of the pole 300, so that the length of the first elastic member 31 can be shortened, thereby reducing the bending degree of the first elastic member 31 during the test process, thereby reducing the influence of the first elastic member 31 on the test result, and improving the accuracy of the test.

[0038] Preferably, all the connecting claws 3 are evenly arranged in a ring shape around the central axis of the battery to be tested. By arranging all the connecting claws 3 to be evenly arranged in a ring shape around the central axis of the battery to be tested, the pressure on the connecting member 4 can be more balanced, reducing the probability of the connecting member 4 being distorted due to pressure, thereby reducing the bending degree of the second elastic member 5 and improving the accuracy of the detection.

[0039] Furthermore, the accuracy of detection can be improved by increasing the number of connecting claws 3. Two to nine connecting claws 3 can be set. For example, three, four, five, nine or even more connecting claws 3 can be set. Exemplarily, the connecting claws 3 can also be set to eight.

[0040] Reference Figure 4 and Figure 5The abutment member 32 has a pointed tip 321, and the end of the pointed tip 321 is pressed against the sealing member 200 (i.e., the glass member). By providing the pointed tip 321, it is possible to avoid contact between the abutment member 32 and other components other than the sealing member 200 during the detection process, thereby improving the accuracy of the detection result. In this embodiment, the abutment member 32 is tapered as a whole.

[0041] In other embodiments, the abutment member 32 can be configured to be detachably connected to the first elastic member 31. For example, the abutment member 32 is bonded to the first elastic member 31 by glue. When replacement is required, a disintegrant can be used to separate the abutment member 32 from the first elastic member 31.

[0042] Preferably, a level is provided on the test bench 1, and the level is used to detect the levelness of the surface of the test bench 1. By providing the level, the levelness of the surface of the test bench 1 can be conveniently adjusted, thereby confirming that the battery to be tested can be placed horizontally, reducing the influence of the horizontal angle on the test data during the test process.

[0043] Reference Figure 2 , Figure 6 and Figure 7 The test bench 1 is provided with a fixing fixture 7, which includes at least two clamping plates 71, and the clamping plates 71 have a clamping surface 711, which is an arc surface, and the clamping surface 711 is in contact with the outer side surface of the battery to be tested. In this embodiment, the battery to be tested is a cylindrical battery to be tested. By setting the clamping surface 711 of the clamping plate 71 to an arc surface, the shape of the clamping surface 711 can be more in contact with the shape of the battery to be tested, thereby ensuring that the clamping plate 71 can stably clamp the battery to be tested.

[0044] Furthermore, the fixing fixture 7 also includes a first adjustment component 6, and each clamping plate 71 is provided with a first adjustment component 6, and the first adjustment component 6 includes a screw 61 and a connecting seat 62, and the connecting seat 62 is fixedly provided on the test bench 1, and the screw 61 and the connecting seat 62 are threadedly connected, and the end of the screw 61 is hinged with the clamping plate 71, and the lower surface of the clamping plate 71 is in contact with the table surface of the test bench 1. By setting the first adjustment component 6, the position of the clamping plate 71 can be adjusted, so that the clamping plate 71 can clamp batteries of different models and sizes to be tested, thereby improving the versatility of the hardness testing equipment. When in use, the screw 61 can be rotated. Since the lower surface of the clamping plate 71 is in contact with the table surface of the test bench 1, the clamping plate 71 cannot rotate with the screw 61. At this time, the rotational movement of the screw 61 will be converted into the horizontal movement of the clamping plate 71, thereby adjusting the distance between the two clamping plates 71, and then clamping batteries of different models and sizes to be tested.

[0045] In this embodiment, the hardness tester 2 is an existing testing instrument, and a second adjustment component 8 is also provided on the test bench 1. The second adjustment component 8 includes a fixed rod, and a clamping member 81 is provided on the fixed rod. The clamping member 81 is used to clamp the hardness tester 2. The height of the hardness tester 2 can be adjusted by adjusting the clamping position of the hardness tester 2 by the clamping member 81, so as to detect batteries to be tested at different heights.

[0046] In this embodiment, the hardness testing device can test batteries with a height of 200 mm-650 mm and a diameter of 13 mm-35 mm.

[0047] The hardness testing device in this embodiment can be used to test the hardness of the seal 200 of the 1 / 2AA lithium thionyl chloride battery to be tested. The test steps are as follows:

[0048] Observe the level gauge on test bench 1 to confirm that the surface of test bench 1 remains level;

[0049] Take a 1 / 2AA lithium thionyl chloride battery to be tested, and adjust the fixing fixture 7 so that the fixing fixture 7 can stably clamp the battery to be tested;

[0050] The hardness tester 2 with the test assembly installed is set on the second adjustment assembly 8, and the abutment member 32 is extended under the protrusion 400 of the 1 / 2AA type battery pole 300 to be tested by adjusting the height. The hardness tester 2 is pressed down, and the reading in the hardness tester 2 is read after the indication of the hardness detection equipment is stable. In one embodiment, multiple measurements are performed, and the hardness of the seal 200 of the 1 / 2AA type lithium thionyl chloride battery to be tested is 53HD, 51HD, and 50HD respectively.

[0051] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, 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, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0052] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0053] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A hardness testing device, characterized in that: The invention comprises a test assembly, wherein the test assembly comprises a hardness tester and at least two connecting claws, wherein the connecting claws are arranged on the test needle of the hardness tester, and at least two of the connecting claws are arranged in a ring-shaped interval around the central axis of the battery to be tested, and the connecting claws comprise an abutment member and a first elastic member, wherein the abutment member is connected to the test needle through the first elastic member, and the first elastic member can be bent so that the abutment member extends between the protrusion of the pole of the battery to be tested and the sealing member of the battery to be tested, and the end of the abutment member abuts against the sealing member, and the first elastic member and the abutment member are both spaced from the pole, and the first elastic member is used to transmit the pressure exerted on the abutment member to the hardness tester.

2. The hardness testing device according to claim 1, characterized in that: The test assembly also includes a connecting piece, all of the connecting claws are arranged on the connecting piece, the connecting piece is connected to the test needle through a second elastic piece, and the elastic force direction of the second elastic piece is parallel to the axial direction of the test needle.

3. The hardness testing device according to claim 2, characterized in that: An end of the connecting piece away from the testing needle is recessed and provided with an escape groove, and the escape groove is used to accommodate the pole.

4. The hardness testing device according to claim 1, characterized in that: All the connecting claws are evenly arranged in a ring shape around the central axis of the battery to be tested.

5. The hardness testing device according to claim 1, characterized in that: The abutment member has a pointed tip, and an end of the pointed tip is tightly abutted against the sealing member.

6. The hardness testing device according to claim 1, characterized in that: The first elastic member is a spring, and the axis of the spring is parallel to the axis of the test needle.

7. The hardness testing device according to any one of claims 1 to 6, characterized in that: The test needle is arranged vertically.

8. The hardness testing device according to any one of claims 1 to 6, characterized in that: It also includes a test bench, on which a level meter is provided, and the level meter is used to detect the levelness of the test bench surface.

9. The hardness testing device according to any one of claims 1 to 6, characterized in that: It also includes a test bench for placing the battery to be tested. The test bench is provided with a fixing fixture, which includes at least two clamping plates. The clamping plates have clamping surfaces, which are arc surfaces and fit the outer side surfaces of the battery to be tested.

10. The hardness testing device according to claim 9, characterized in that: The fixing fixture also includes a first adjustment component, and each of the clamps is provided with the first adjustment component. The first adjustment component includes a screw and a connecting seat. The connecting seat is fixedly provided on the test bench, the screw and the connecting seat are threadedly connected, the end of the screw is hinged to the clamp, and the lower surface of the clamp is in contact with the table top of the test bench.

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