Multifunctional detection clamp for cylindrical batteries capable of being connected in series

Abstract

The utility model discloses a multifunctional detection clamp for cylindrical batteries capable of being connected in series, relates to the field of battery safety and electrical performance testing, and solves the technical problem that an existing clamp cannot meet the requirement for testing a plurality of batteries. The device comprises a base, a negative electrode movable plate and a positive electrode fixed plate, the positive electrode fixed plate is fixedly installed at one end above the base, the negative electrode movable plate is adjustably installed at the other end above the base, a plurality of guide rods are fixedly installed on one side of the positive electrode fixed plate, and the other ends of the guide rods are movably inserted in the negative electrode movable plate in a penetrating mode. A battery mounting groove is formed among the plurality of guide rods; a copper column for fixing a battery anode is mounted on the anode fixing plate, conical teeth are arranged on the surface of one end, far away from the threads, of the copper column, and an elastic conductor for fixing a battery cathode is mounted on the cathode movable plate. According to the utility model, the mounting requirements of a plurality of batteries are met, the adjustable length range is large, manual welding is avoided, the mounting is convenient, and safety and high efficiency are realized.

Description

Technical Field

[0001] The utility model relates to the field of battery safety and electrical performance testing, and more specifically, to a multifunctional testing fixture capable of serially connecting cylindrical batteries. Background Art

[0002] The technology of electrical appliances using batteries as power sources is becoming more and more mature, with more and more categories, which has promoted the wider application of batteries in production and life, and improved their electrical properties such as capacity and discharge capacity.

[0003] Cylindrical battery testing fixtures are used in battery electrical performance and safety testing to facilitate battery testing, and some batteries need to be tested in series. The current series connection methods include using a soldering machine to connect batteries in series and using manual spot welding. The operation is difficult, time-consuming, and the welding quality is not guaranteed. It is easy to increase the resistance of the circuits connected between the batteries. In addition, high temperatures during the welding process may cause battery damage and internal short circuits, which can easily cause personal injury. In addition, existing fixtures generally have a fixed length and width, and can only meet the testing of batteries of one specification, which is inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a multifunctional detection fixture for serially connecting cylindrical batteries in view of the deficiencies of the prior art, so as to solve the technical problem that the prior fixture cannot meet the requirements of multiple battery tests.

[0005] The utility model discloses a multifunctional detection fixture for cylindrical batteries that can be connected in series, which comprises a base, a negative electrode movable plate and a positive electrode fixed plate, wherein the positive electrode fixed plate is fixedly mounted on one end above the base, and the negative electrode movable plate is adjustably mounted on the other end above the base, and a plurality of guide rods are fixedly mounted on one side of the positive electrode fixed plate, and the other ends of the plurality of guide rods are movably inserted in the negative electrode movable plate, and a battery mounting groove is formed between the plurality of guide rods; a copper column for fixing the positive electrode of the battery is mounted on the positive electrode fixed plate, and a conical tooth is provided on the surface of the copper column away from the threaded end, and an elastic conductor for fixing the negative electrode of the battery is mounted on the negative electrode movable plate.

[0006] As a further improvement, the positive electrode fixing plate is provided with a through hole, the copper column is provided with a side plate which is an integral structure therewith, one end of the copper column is provided with a thread, and the copper column is installed in the through hole by a nut screwed on the thread.

[0007] Furthermore, the guide rod is made of tungsten steel.

[0008] Furthermore, the elastic conductor includes a pin holder, a cavity shell, a spring, a slider and a needle body, the bottom of the pin holder is fixedly mounted on the negative electrode movable plate, the side of the pin holder away from the negative electrode movable plate is fixedly mounted with a cavity shell, the slider is slidably mounted inside the cavity shell, one end of the spring is fixedly mounted on the bottom of the cavity shell, the other end of the spring is fixedly connected to the slider, the needle body is fixedly mounted on the slider, and the needle body movably penetrates the cavity shell, the pin holder and the negative electrode movable plate.

[0009] Furthermore, the base is provided with two slide grooves passing through the base, and the bottom of the negative electrode movable plate is fixedly installed with two positioning blocks that are integrated with it. The positioning block is provided with a threaded hole passing through the positioning block, and a bolt is screwed into the threaded hole. A nut is screwed on one end of the bolt located at the bottom of the slide groove.

[0010] Furthermore, an insulating coating layer is provided on the surface of the guide rod.

[0011] Furthermore, a battery tray adapted for batteries of different models is installed in the battery installation slot, and a heat dissipation slot is provided on the battery tray.

[0012] Beneficial Effects

[0013] The advantages of the utility model are:

[0014] 1. The utility model sets a base, a positive electrode fixing plate, an adjustable negative electrode movable plate and a battery installation slot. The battery is installed in the battery installation slot. The positive electrode fixing plate and the negative electrode movable plate fix the battery. The length of the battery installation slot is adjusted by the adjustable negative electrode movable plate, thereby meeting the installation requirements of multiple batteries. The adjustable length range is large, manual welding is avoided, and the installation is convenient, safe and efficient.

[0015] 2. The utility model solves the installation problem of cylindrical batteries of different models by providing a battery installation slot with adjustable length and a battery tray adapted to batteries of different models. The heat dissipation slot on the battery tray is conducive to heat dissipation when the battery is working.

[0016] 3. The utility model provides a pin holder, a cavity shell, a spring, a slider and a pin body, and uses the spring to make the positive and negative electrodes of the battery contact more closely, thereby fixing the negative electrode of the battery. A copper column with conical teeth on the surface is provided to prevent the battery from sliding, ensure that the battery is installed firmly, and increase reliability during the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the detection fixture of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the elastic conductor in the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the copper column in the utility model;

[0020] Figure 4 This is a schematic diagram of a battery tray of the utility model;

[0021] Figure 5 This is a schematic diagram of the plug-in terminal structure of the utility model;

[0022] Figure 6 It is a schematic diagram of the clamp structure and battery installation structure of the utility model.

[0023] Among them: 1-base, 2-negative electrode movable plate, 3-positive electrode fixed plate, 4-guide rod, 41-battery mounting slot, 5-copper column, 51-side plate, 52-thread, 53-conical tooth, 6-elastic conductor, 61-thimble holder, 62-cavity shell, 63-spring, 64-slider, 65-needle body, 7-slide groove, 8-positioning block, 9-bolt, 10-battery tray, 11-heat dissipation slot, 12-male head, 121-wire terminal, 122-female head, 123-matching hole. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the embodiments, but does not constitute any limitation to the utility model. Any limited modifications made by anyone within the scope of the claims of the utility model are still within the scope of the claims of the utility model.

[0025] See also Figure 1-Figure 6 The utility model discloses a multifunctional detection fixture for cylindrical batteries that can be connected in series, which comprises a base 1, a negative electrode movable plate 2 and a positive electrode fixed plate 3. The base 1 has a total length of 360 mm, a width of 42 mm and a thickness of 10 mm.

[0026] The positive electrode fixing plate 3 is fixedly mounted on one end above the base 1, and the negative electrode movable plate 2 is adjustably mounted on the other end above the base 1. Three guide rods 4 are fixedly mounted on one side of the positive electrode fixing plate 3. One end of the three guide rods 4 is movably inserted into the negative electrode movable plate 2. The diameter of the guide rods 4 is 3 mm. A battery mounting groove 41 is formed between the three guide rods 4. The guide rods 4 are made of tungsten steel. The surface of the guide rods 4 is provided with an insulating coating layer, so that the battery is heated evenly when working, which is beneficial to heat dissipation when the battery is working.

[0027] A copper column 5 for fixing the positive electrode of the battery is installed on the positive electrode fixing plate 3, and an elastic conductor 6 for fixing the negative electrode of the battery is installed on the negative electrode movable plate 2. The battery is installed in the battery installation groove 41, and the copper column 5 and the elastic conductor 6 fix the positive electrode and the negative electrode of the battery respectively. The length of the battery installation groove 41 is adjusted by the detachable negative electrode movable plate 2.

[0028] like Figure 1 As shown, the base 1 is provided with two slide grooves 7 penetrating the base 1, and the depth of the slide grooves 7 is 3 mm. Two positioning blocks 8 integrally formed with the negative electrode movable plate 2 are fixedly installed at the bottom thereof, and the positioning blocks 8 are provided with threaded holes penetrating the positioning blocks 8, and bolts 9 are screwed into the threaded holes, and a nut is screwed into one end of the bolt 9 located at the bottom of the slide groove 7. The negative electrode movable plate 2 is fixed by the bolts and nuts.

[0029] like Figure 2 As shown, the elastic conductor 6 includes an ejector holder 61, a cavity shell 62, a spring 63, a slider 64 and a needle body 65. The radius of the ejector holder 61 is 7 mm and the thickness is 2 mm. The bottom of the ejector holder 61 is fixedly mounted on the negative electrode movable plate 2. The side of the ejector holder 61 away from the negative electrode movable plate 2 is fixedly mounted with the cavity shell 62. The slider 64 is slidably mounted inside the cavity shell 62. One end of the spring 63 is fixedly mounted on the bottom of the cavity shell 62. The other end of the spring 63 is fixedly connected to the slider 64. The diameter of the slider 64 is 3.5 mm and the thickness is 2 mm. The needle body 65 is fixedly mounted on the slider 64. The radius of the needle body 65 is 1 mm, the length is 30 mm, and the needle head is a fillet with a radius of 1 mm. The needle body 65 movably penetrates the cavity shell 62, the ejector holder 61 and the negative electrode movable plate 2. The outer side of the cavity shell 62 has threads to facilitate the user to move. The ejector holder 61, the cavity shell 62, the spring 63 and the slider 64 are all made of Hastelloy, and the elastic conductor 6 makes the battery contact more closely.

[0030] like Figure 3 As shown, a through hole is provided on the positive electrode fixing plate 3, and a side plate 51 is provided on the copper column 5 as an integral structure therewith, and the side plate 51 is used to fix the copper column 5, and the diameter of the side plate 51 is larger than the diameter of the through hole. A thread 52 is provided at one end of the copper column 5, and the copper column 5 is installed in the through hole by a nut screwed on the thread 52.

[0031] The surface of the copper column 5 away from the thread 52 is provided with a bevel tooth 53, which can prevent the battery from sliding, ensure that the battery is not loose when installed, and increase the reliability during the test process.

[0032] like Figure 4 As shown, a battery tray 10 adapted to different types of batteries is installed in the battery installation slot 41, and a heat dissipation slot 11 is provided on the battery tray 10. The battery tray 10 is made of phenolic plastic and is hollowed out in a semicircular ring. It is divided into two types, 5mm and 7mm, according to different inner diameters. The battery tray 10 is the same length as the corresponding battery height, and can realize the installation of No. 5 and No. 7 dry batteries.

[0033] Before connecting multiple cylindrical batteries to an external circuit, first connect the positive and negative crimping terminals 121 of the male plug 12 of the plug-in terminal to the load or charging and discharging equipment circuit, and finally engage the male plug 12 of the plug-in terminal with the female clamp connection 122. The female plug 122 is provided with a matching hole 123 corresponding to the male plug 12. The plug-in terminal and the external circuit form a complete electrical circuit to achieve the corresponding test function.

[0034] The plug-in terminal in the utility model is a prior art, and the utility model does not improve it.

[0035] The working principle of the utility model is:

[0036] When it is necessary to install multiple cylindrical batteries into the fixture, first remove the bolts screwed on the positioning block 8 and the nuts at the bottom of the slide groove 7, then move the negative electrode movable plate 2, adjust the length of the battery mounting groove 41 so that all the cylindrical batteries can be placed in the battery mounting groove 41, and then place multiple cylindrical batteries in the battery mounting groove 41 (if it is a No. 7 battery or a No. 5 battery, you need to select a battery tray 10 of the corresponding model for installation, and then place it in the battery mounting groove 41), the positive poles of the multiple cylindrical batteries face the positive electrode fixing plate 3, and the negative poles of the multiple cylindrical batteries face the negative electrode movable plate 2, and then move the negative electrode movable plate 2 so that the positive pole of the cylindrical battery contacts the conical tooth 53, and the negative pole of the cylindrical battery contacts the needle body 65 of the elastic conductor 6, and finally screw and fix the bolts on the positioning block 8 and the nuts at the bottom of the slide groove 7.

[0037] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A multifunctional testing fixture for cylindrical batteries connected in series, characterized in that: It comprises a base (1), a negative electrode movable plate (2) and a positive electrode fixing plate (3), wherein the positive electrode fixing plate (3) is fixedly mounted on one end above the base (1), and the negative electrode movable plate (2) is adjustably mounted on the other end above the base (1); a plurality of guide rods (4) are fixedly mounted on one side of the positive electrode fixing plate (3), and the other ends of the plurality of guide rods (4) are movably inserted in the negative electrode movable plate (2), and a battery mounting groove (41) is formed between the plurality of guide rods (4); a copper column (5) for fixing the positive electrode of the battery is mounted on the positive electrode fixing plate (3), and a conical tooth (53) is provided on the surface of the copper column (5) at one end away from the thread (52); and an elastic conductor (6) for fixing the negative electrode of the battery is mounted on the negative electrode movable plate (2).

2. A multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 1, characterized in that: The positive electrode fixing plate (3) is provided with a through hole, the copper column (5) is provided with a side plate (51) which is an integral structure with the copper column (5), one end of the copper column (5) is provided with a thread (52), and the copper column (5) is installed in the through hole by means of a nut screwed onto the thread (52).

3. A multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 2, characterized in that: The guide rod (4) is made of tungsten steel.

4. A multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 1, characterized in that: The elastic conductor (6) comprises a pin holder (61), a cavity shell (62), a spring (63), a slider (64) and a needle body (65); the bottom of the pin holder (61) is fixedly mounted on the negative electrode movable plate (2); the side of the pin holder (61) away from the negative electrode movable plate (2) is fixedly mounted with the cavity shell (62); the slider (64) is slidably mounted inside the cavity shell (62); one end of the spring (63) is fixedly mounted on the bottom of the cavity shell (62); the other end of the spring (63) is fixedly connected to the slider (64); the needle body (65) is fixedly mounted on the slider (64); and the needle body (65) is movably inserted into the cavity shell (62), the pin holder (61) and the negative electrode movable plate (2).

5. The multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 1, characterized in that: The base (1) is provided with two slide grooves (7) penetrating the base (1); the bottom of the negative electrode movable plate (2) is fixedly mounted with two positioning blocks (8) which are integrally formed therewith; the positioning block (8) is provided with a threaded hole penetrating the positioning block (8); a bolt (9) is screwed into the threaded hole; and a nut is screwed onto one end of the bolt (9) located at the bottom of the slide groove (7).

6. A multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 1, characterized in that: The surface of the guide rod (4) is provided with an insulating coating layer.

7. A multifunctional testing fixture for cylindrical batteries capable of being connected in series according to claim 1, characterized in that: A battery tray (10) adapted for batteries of different models is installed in the battery installation slot (41), and a heat dissipation slot (11) is provided on the battery tray (10).

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