A battery clamp and test plate for preventing short - circuit

Abstract

The present invention belongs to the technical field of battery testing, and particularly relates to a short-circuit prevention battery fixture and a test plate. The short-circuit prevention battery fixture includes a fixture body, and the fixture body is provided with a positive terminal and a negative terminal; the positive terminal includes an insulating fixing part, a receiving position is arranged on one side of the insulating fixing part facing the battery, an elastic column is arranged at the center of the receiving position, the top of the elastic column is higher than the surface of the insulating fixing part, and in a stressed state, the elastic column is pressed into the receiving position; a pole piece is arranged on the surface of the insulating fixing part facing the battery, and in a test state, the pole piece is in contact with the positive electrode of the battery; during testing, the elastic column is connected to the current test end, and the pole piece is connected to the voltage test end. By providing a positive terminal including an elastic column and a pole piece, the present invention can effectively prevent short circuit during the battery installation process and ensure the safety of the test.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery testing, and particularly relates to a battery clamp for preventing short - circuit and a test tray. Background Art

[0002] Cylindrical batteries are the earliest mature industrialized battery products. After more than twenty years of development, the production process of cylindrical batteries is now mature, with high production efficiency, relatively low cost, and a higher battery yield rate compared to square batteries and soft - pack batteries. Their consistency and safety are relatively excellent.

[0003] Cylindrical batteries are generally encapsulated with a metal shell and have relatively high safety during use. However, when testing cylindrical batteries, traditional clamps use elastic - sheet contacts. During the process of inserting the battery into the clamp, at the positive - electrode end of the battery, the elastic - sheet contact first contacts the negative electrode at the edge of the battery end and then the positive electrode at the center of the battery end, which is extremely likely to cause short - circuit between the positive and negative electrodes of the battery, resulting in dangerous situations such as sparks and a sharp rise in battery temperature.

[0004] The prior art does not provide a corresponding solution for how to prevent battery short - circuit during battery testing with a clamp. Summary of the Invention

[0005] An object of an embodiment of the present invention is to provide a battery clamp for preventing short - circuit, aiming to solve the problem that the battery is prone to short - circuit when inserted into the clamp for testing in the prior art.

[0006] An embodiment of the present invention is implemented as follows. A battery clamp for preventing short - circuit includes a clamp body, and the clamp body is provided with a positive - electrode terminal and a negative - electrode terminal.

[0007] The positive - electrode terminal includes an insulating fixing part. On the side of the insulating fixing part facing the battery, there is a receiving position. At the center of the receiving position, there is an elastic column. In the non - stressed state, the top of the elastic column is higher than the surface of the insulating fixing part. In the stressed state, the elastic column is pressed into the receiving position, and the diameter of the elastic column is smaller than the distance between the grooves between the positive and negative electrodes of the used battery.

[0008] On the side surface of the insulating fixing part facing the battery, there is a pole piece. In the test state, the pole piece contacts the positive electrode of the battery.

[0009] During testing, the elastic column is connected to the current test terminal, and the pole piece is connected to the voltage test terminal.

[0010] Another object of an embodiment of the present invention is to provide a test tray, which includes a tray body and the battery clamp for preventing short - circuit as described in the present invention.

[0011] A number of groups of bayonets are provided on the disk body, and the bayonets are matched with the card seats at the bottom of the substrate of the anti-short-circuit battery fixture.

[0012] The anti-short-circuit battery fixture provided by the embodiment of the present invention ensures the prevention of battery short circuit by setting elastic columns so that the positive contact and the negative contact at the positive electrode end of the battery cannot be in contact with the elastic columns simultaneously during the battery loading process. On this basis, by setting the pole piece, with the cooperation of the elastic column, the positive contact and the negative contact at the positive electrode end of the battery cannot be in contact with the pole piece simultaneously, ensuring the safety during the battery loading process. At the same time, the cooperation of the elastic column and the pole piece can realize the four-wire detection of the battery, improving the detection accuracy. Description of the Drawings

[0013] Figure 1 is the three-dimensional structure of the upper side of the anti-short-circuit battery fixture provided by the embodiment of the present invention Figure 1 ;

[0014] Figure 2 is the three-dimensional structure of the upper side of the anti-short-circuit battery fixture provided by the embodiment of the present invention Figure 2 ;

[0015] Figure 3 is the three-dimensional structure diagram of the lower side of the anti-short-circuit battery fixture provided by the embodiment of the present invention;

[0016] Figure 4 is the three-dimensional structure diagram of the positive terminal;

[0017] Figure 5 is the three-dimensional structure diagram of the negative terminal;

[0018] Figure 6 is the three-dimensional structure diagram of the test disk provided by the embodiment of the present invention.

[0019] In the drawings: 1. Positive terminal; 11. Insulating fixing part; 12. Elastic column; 13. Pole piece; 14. First microcircuit board; 2. Negative terminal; 21. Fixed seat; 22. Telescopic column; 23. Second microcircuit board; 3. Placing groove; 4. Substrate; 5. Card seat; 6. Disk body; 7. Insertion interface. Detailed Embodiments

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0022] Such as Figures 1-6As shown in the figure, an embodiment of the present invention provides a battery fixture for preventing short - circuit. The battery fixture for preventing short - circuit includes a fixture body, and the fixture body is provided with a positive terminal 1 and a negative terminal 2;

[0023] The positive terminal 1 includes an insulating fixing part 11. On the side of the insulating fixing part 11 facing the battery, there is a receiving position. At the center of the receiving position, there is an elastic column 12. In the non - stressed state, the top of the elastic column 12 is higher than the surface of the insulating fixing part 11. In the stressed state, the elastic column 12 is pressed into the receiving position. The diameter of the elastic column 12 is smaller than the distance between the grooves between the positive and negative electrodes of the used battery;

[0024] On the surface of the insulating fixing part 11 facing the battery, there is a pole piece 13. In the test state, the pole piece 13 is in contact with the positive electrode of the battery;

[0025] During the test, the elastic column 12 is connected to the current test end, and the pole piece 13 is connected to the voltage test end.

[0026] In this embodiment, the positive terminal 1 and the negative terminal 2 are structures respectively used to contact the positive and negative terminals of the battery for detecting the battery. In this application, for a cylindrical battery, usually the metal outer skin of the battery including the bottom of the battery is used as the negative electrode, so the negative electrode extends to the positive end of the battery. The positive and negative electrodes of the battery are separated by a groove at the top of the battery. After the battery is externally plastic - encapsulated, except for the bottom of the battery, the negative electrode of the battery is not exposed. Therefore, even if a spring - type contact is used, no short - circuit problem will occur during the process of loading the battery into the fixture. However, the detection of the battery is often carried out before the battery is plastic - encapsulated. At this time, at the top of the battery, both the positive - electrode contact and the negative - electrode contact are exposed and are only separated by a groove. It is very easy to cause a short - circuit of the battery during the process of loading the battery into the fixture before the test. The present invention designs the positive terminal 1 in the form of an elastic column 12, so that the elastic column 12 cannot connect the positive and negative electrodes of the battery, solving the problem of short - circuit during the process of loading the battery into the test fixture.

[0027] In this embodiment, on the surface of the insulating fixing part 11 facing the battery, there is also a pole piece 13. On the fixture, the pole piece 13 and the elastic column 12 are insulated from each other. The elastic column 12 is used to detect the current of the battery, and the pole piece 13 is used to detect the voltage of the battery. Since there is a larger contact area between the pole piece 13 and the positive electrode of the battery, the contact resistance can be significantly reduced, thereby improving the detection accuracy. Using the battery fixture for preventing short - circuit of the present invention, the detection accuracy of general household batteries can reach one ten - thousandth.

[0028] In this embodiment, the insulating fixing portion 11 can be set as a square or rectangular structure with a certain thickness, and is made of common insulating materials such as plastics, silicon wafers, and fiberboards; the accommodating position can be set as a circular through-hole, and the elastic column 12 is concentrically arranged with the circle. The elastic column 12 and the pole piece 13 are made of metal materials with good electrical conductivity. In this embodiment, the conductive column can include a fixed section and a telescopic section. The fixed section is hollow, and the telescopic section is partially sleeved inside the fixed section. A spring is provided at the bottom of the telescopic section to keep the telescopic section in a popped-up state. Among them, the length of the telescopic section is greater than or equal to the length of the hollow part of the fixed section; the length of the fixed section is less than or equal to the thickness of the insulating fixing portion 11. In this embodiment, the diameter of the elastic column 12 is smaller than the distance between the grooves between the positive and negative electrodes of the battery used. Here, it refers to the diameter of the telescopic section being smaller than the distance between the grooves between the positive and negative electrodes of the battery used, and the size of the distance varies for different batteries.

[0029] The anti-short-circuit battery fixture provided by the embodiment of the present invention ensures the prevention of battery short-circuit by setting the elastic column 12 so that the positive electrode contact and the negative electrode contact at one end of the positive electrode of the battery cannot simultaneously contact the elastic column 12 during the battery loading process; on this basis, by setting the pole piece 13, in cooperation with the elastic column 12, the positive electrode contact and the negative electrode contact at one end of the positive electrode of the battery cannot simultaneously contact the pole piece 13, ensuring the safety during the battery loading process; at the same time, the elastic column 12 and the pole piece 13 cooperate to achieve four-wire detection of the battery, improving the detection accuracy.

[0030] As a preferred embodiment of the present invention, a first microcircuit board 14 is provided on the side of the insulating fixing portion 11 facing away from the battery. The bottom of the elastic column 12 is fixed on the first microcircuit board 14, and the pole piece 13 extends from the inner wall of the accommodating position to the first microcircuit board 14.

[0031] In this embodiment, the insulating fixing portion 11 is fixedly arranged on the first microcircuit board 14. The elastic column 12 and the pole piece 13 are respectively electrically connected to the first microcircuit board 14, and the first microcircuit board 14 is used to connect to a test device.

[0032] As a preferred embodiment of the present invention, the fixture body includes a placement groove 3. A first clamping position is provided at one end of the placement groove 3, and the first microcircuit board 14 is clamped in the first clamping position.

[0033] In this embodiment, the first microcircuit board 14 is clamped in the first clamping position. As a further preferred solution, a notch is provided above the pole piece 13. When the battery is inserted into the placement groove 3 from top to bottom, due to the notch above the pole piece 13, the pole piece 13 cannot be connected to the positive and negative electrodes of the battery simultaneously, thus avoiding short circuit; in other directions, since the battery cannot slide into the placement groove 3 from these directions, increasing the area of the pole piece 13 will not cause the pole piece 13 to contact the positive and negative electrodes of the battery simultaneously, avoiding short circuit, and increasing the area of the pole piece 13 can significantly reduce the contact resistance.

[0034] As a preferred embodiment of the present invention, the fixture further includes a substrate 4, and the placement groove 3 is provided on the substrate 4;

[0035] A first opening is provided on the substrate 4. After the first microcircuit board 14 is clamped in the first clamping position, the connection end of the first microcircuit board 14 passes through the first opening and extends to the bottom surface of the substrate 4, and is fixedly welded to the bottom of the substrate 4.

[0036] In this embodiment, the substrate 4 can be made of an insulating material, including but not limited to a silicon board, a plastic board, a fiber board, etc. For the convenience of later connection, the base material of a general circuit board can be used. Two copper sheets are provided at the connection end of the first microcircuit board 14. One copper sheet is electrically connected to the elastic column 12, and the other copper sheet is electrically connected to the pole piece 13.

[0037] As a preferred embodiment of the present invention, the negative terminal 2 includes a second microcircuit board 23, a fixing seat 21, and a telescopic column 22;

[0038] The fixing seat 21 is provided on the side of the second microcircuit board 23 facing the battery. A plurality of telescopic columns 22 are provided on the fixing seat 21. One end of the telescopic column 22 passes through the fixing seat 21 and is fixedly connected to the second microcircuit board 23, and the other end of the telescopic column 22 extends towards the battery.

[0039] In this embodiment, the structure of the telescopic column 22 can refer to the structure description of the elastic column 12. The difference is only in their sizes, and no further limitation is made in this embodiment.

[0040] As a preferred embodiment of the present invention, a second clamping position is provided at the other end of the placement groove 3, and the second microcircuit board 23 is clamped in the second clamping position;

[0041] A second opening is provided on the substrate 4. After the second microcircuit board 23 is clamped in the second clamping position, the connection end of the second microcircuit board 23 passes through the second opening and extends to the bottom surface of the substrate 4, and is fixedly welded to the bottom of the substrate 4.

[0042] In this embodiment, the function of the second card slot is equivalent to that of the first card slot. The second card slot is used for fixing the second microcircuit board 23. The second microcircuit board 23 and the first microcircuit board 14 may be the same or similar in overall structure, and the main difference lies in the arrangement of the internal conductive metal.

[0043] As a preferred embodiment of the present invention, four telescopic columns 22 are provided.

[0044] In this embodiment, after passing through the second microcircuit board, four telescopic columns 22 lead out two connection terminals. Each connection terminal is electrically connected to two telescopic columns 22 respectively. This can increase the contact area and stability between each connection terminal and the negative electrode of the battery, making the contact between the negative electrode of the battery and the telescopic columns 22 more reliable, and at the same time reducing the contact resistance.

[0045] As a preferred embodiment of the present invention, a card holder 5 is provided on the bottom surface of the substrate 4. Two card holders 5 are provided. One card holder 5 is electrically connected to the positive terminal 1, and the other card holder 5 is electrically connected to the negative terminal 2.

[0046] In this embodiment, the card holder 5 is provided on the substrate 4, which is convenient for the installation and fixation of the fixture, and the plug-in connection can be realized by using the card holder 5.

[0047] The embodiment of the present invention also provides a test plate, which includes a plate body 6 and a short-circuit prevention battery fixture as described in any one of the embodiments of the present invention;

[0048] A number of groups of bayonets are provided on the plate body 6, and the bayonets are matched with the card holders 5 at the bottom of the substrate 4 of the short-circuit prevention battery fixture.

[0049] In this embodiment, the plate body 6 is made of an insulating material. Through the arrangement of the bayonets and the card holders 5, it is convenient to insert and remove the fixture from the plate body 6.

[0050] As a preferred embodiment of the present invention, a number of through holes are evenly distributed on the plate body 6, and a number of plug-in interfaces 7 are provided on one side of the plate body 6. Each plug-in interface 7 is electrically connected to a group of bayonets on the plate body 6.

[0051] In this embodiment, a conductive layer is provided inside the plate body 6. The conductive layer is used to connect the plug-in interfaces 7 and the bayonets to realize the electrical connection between the two, so that the battery can be tested through the plug-in interfaces 7 by the test equipment.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery fixture for preventing short circuit, characterized in that, The anti-short-circuit battery fixture includes a fixture body, and the fixture body is provided with a positive terminal and a negative terminal; The positive terminal includes an insulating fixing part, a receiving position is arranged on one side of the insulating fixing part facing the battery, an elastic column is arranged at the center of the receiving position, in an unloaded state, the top of the elastic column is higher than the surface of the insulating fixing part, and in a loaded state, the elastic column is pressed into the receiving position, and the diameter of the elastic column is smaller than the distance between the grooves between the positive and negative electrodes of the battery used; A pole piece is arranged on the surface of the insulating fixing part facing the battery, and in a test state, the pole piece contacts the positive electrode of the battery; During testing, the elastic column is connected to the current test terminal, and the pole piece is connected to the voltage test terminal.

2. The anti-short-circuit battery fixture according to claim 1, wherein A first microcircuit board is arranged on the side of the insulating fixing part facing away from the battery, the bottom of the elastic column is fixed on the first microcircuit board, and the pole piece extends from the inner wall of the receiving position to the first microcircuit board.

3. The short-circuit prevention battery fixture according to claim 2, wherein The fixture body includes a placement groove, a first clamping position is arranged at one end of the placement groove, and the first microcircuit board is clamped in the first clamping position.

4. The short - circuit prevention battery fixture according to claim 3, wherein, The fixture further includes a substrate, and the placement groove is arranged on the substrate; A first opening is arranged on the substrate. After the first microcircuit board is clamped in the first clamping position, the connection end of the first microcircuit board passes through the first opening and extends to the bottom surface of the substrate, and is welded and fixed to the bottom of the substrate.

5. The anti-short-circuit battery fixture according to claim 4, wherein The negative terminal includes a second microcircuit board, a fixing seat and a telescopic column; The fixing seat is arranged on the side of the second microcircuit board facing the battery, several telescopic columns are arranged on the fixing seat, one end of the telescopic column passes through the fixing seat and is connected and fixed to the second microcircuit board, and the other end of the telescopic column extends towards the battery.

6. The anti-short-circuit battery fixture according to claim 5, wherein A second clamping position is arranged at the other end of the placement groove, and the second microcircuit board is clamped in the second clamping position; A second opening is arranged on the substrate. After the second microcircuit board is clamped in the second clamping position, the connection end of the second microcircuit board passes through the second opening and extends to the bottom surface of the substrate, and is welded and fixed to the bottom of the substrate.

7. The anti-short-circuit battery fixture according to claim 5, wherein, There are four telescopic columns.

8. The anti-short-circuit battery fixture according to any one of claims 4-7, characterized in that Two card seats are arranged on the bottom surface of the substrate, one card seat is electrically connected to the positive terminal, and the other card seat is electrically connected to the negative terminal.

9. A test plate, characterized in that, The test disk includes a disk body and the anti-short-circuit battery fixture according to any one of claims 1-8; A plurality of groups of bayonets are arranged on the disk body, and the bayonets are matched with the card seats at the bottom of the substrate of the anti-short-circuit battery fixture.

10. The test disk according to claim 9, characterized in that, A plurality of through holes are evenly distributed on the disk body, and a plurality of plug-in interfaces are arranged on one side of the disk body, and each plug-in interface is electrically connected to a group of bayonets on the disk body.

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