Battery short circuit detection device

Abstract

The utility model provides a battery short circuit detection device, which comprises a test cabinet, a battery clamp and a short circuit mechanism, and is characterized in that the battery clamp is arranged in the test cabinet and is used for fixing a battery to be tested; the short circuit mechanism comprises a moving assembly and a contact assembly, the moving end of the moving assembly is connected with the contact assembly and used for moving the contact assembly towards the direction of the battery clamp, the contact assembly comprises a [-shaped frame, a conductive contact piece and a wire, and the bottoms of the two free ends of the [-shaped frame are connected with the conductive contact piece through hinges; a to-be-tested battery is fixed in the battery clamp, the moving assembly moves the [-shaped frame towards the battery clamp, the conductive contact pieces at the bottom of the [-shaped frame are connected with the positive electrode and the negative electrode of the to-be-tested battery respectively, the to-be-tested battery is short-circuited under the action of the wire, and the conductive contact pieces are connected with the positive electrode and the negative electrode of the to-be-tested battery under the action of the hinge and the torsion spring when the conductive contact pieces make contact with the polar end of the battery. And the conductive contact piece can always keep good contact with the polar end of the battery, so that the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the field of battery short - circuit detection, and particularly to a battery short - circuit detection device. Background Technique

[0002] In the fields of battery production and application, battery short - circuit detection is an important link to ensure battery quality and safety. With the continuous development of battery technology, especially the wide application of lithium - ion batteries in fields such as electric vehicles, energy storage systems, and portable electronic devices, the requirements for battery short - circuit detection technology are also increasing day by day;

[0003] The common detection method for batteries is external short - circuit testing. By directly connecting the positive and negative electrodes of the battery with a wire, the wire provides a path with almost zero resistance, allowing current to circulate inside and outside the battery at an extremely high speed, thus causing a short - circuit of the battery. Observing the behavior and temperature change of the battery during the short - circuit process is the detection result we need. Currently, when using a wire to connect the positive and negative electrodes of the battery with traditional detection equipment, the wire is prone to poor contact with the positive and negative electrodes of the battery, resulting in inaccurate detection results. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In order to solve the above problems of the prior art, the utility model provides a battery short - circuit detection device.

[0006] (II) Technical Solutions

[0007] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0008] A battery short - circuit detection device includes a test cabinet, a battery fixture, and a short - circuit mechanism;

[0009] The battery fixture is installed inside the test cabinet and is used to fix the battery to be tested;

[0010] The short - circuit mechanism includes a moving component and a contact component. The moving end of the moving component is connected to the contact component and is used to move the contact component towards the direction of the battery fixture;

[0011] The contact component includes a C - shaped frame, a conductive contact piece, and a wire;

[0012] The bottoms of the two free ends of the C - shaped frame are both connected to the conductive contact piece through hinges;

[0013] A torsion spring is installed on the hinge. One side force arm of the torsion spring is connected to the inner wall of the C - shaped frame, and the other side force arm of the torsion spring is connected to the conductive contact piece;

[0014] The two conductive contacts are connected by the wire.

[0015] Preferably, the moving component includes a motor, a lead screw, a slider and a connecting rod;

[0016] A moving groove is formed on the surface of the test cabinet;

[0017] The lead screw is installed in the moving groove, and one end of the lead screw is connected to the motor;

[0018] The slider is slidably installed in the moving groove and is threadedly connected to the lead screw;

[0019] One end of the connecting rod is connected to the slider, and the other end of the connecting rod is connected to the U-shaped frame.

[0020] Preferably, the U-shaped frame includes an upper L-shaped rod, a lower L-shaped rod, a sleeve and a fixing screw;

[0021] The sleeve is fixedly installed on the top of the lower L-shaped rod, and a telescopic groove corresponding to the vertical part of the upper L-shaped rod is formed on the top of the sleeve;

[0022] The vertical part of the upper L-shaped rod is installed in the telescopic groove;

[0023] The fixing screw is threadedly connected to one side of the top opening of the sleeve.

[0024] Preferably, the battery clamp includes a fixing rod, a fixing tube body, an arc-shaped clamping plate and a limiting screw;

[0025] The fixing rod is vertically arranged on the test cabinet;

[0026] The fixing tube body is installed on the top of the fixing rod;

[0027] The arc-shaped clamping plate is installed in the fixing tube body;

[0028] One end of the limiting screw is rotatably connected to the arc-shaped clamping plate, the other end of the limiting screw is sequentially threadedly connected to the fixing tube body and the fixing rod, and is fixedly connected with a handwheel.

[0029] Preferably, a temperature sensor is installed in the arc-shaped clamping plate, and the temperature sensor is electrically connected to a data recorder.

[0030] (III) Beneficial effects

[0031] The beneficial effects of the present utility model are as follows: By adopting the above technical solution, the battery to be tested is fixed in the battery fixture, and the moving component moves the U-shaped frame towards the battery fixture, so that the conductive contacts at the bottom of the U-shaped frame are respectively connected to the positive and negative electrodes of the battery to be tested. Under the action of the wire, the battery to be tested is short-circuited. When the conductive contact touches the polar end of the battery, under the action of the hinge and the torsion spring, the conductive contact can always maintain good contact with the polar end of the battery, ensuring the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 FIG. 6 is a schematic diagram of the result of a battery short-circuit detection device;

[0033] Figure 2 FIG. 10 is a front view schematic diagram of the result of a battery short-circuit detection device;

[0034] Figure 3 FIG. 14 is a schematic structural diagram of the contact component;

[0035] Figure 4 FIG. 18 is a schematic structural diagram of the U-shaped frame;

[0036] Figure 5 FIG. 22 is a schematic structural diagram of the battery fixture.

[0037]

DESCRIPTION OF THE REFERENCE NUMERALS

[0038] 1. Test cabinet;

[0039] 2. Short-circuit mechanism;

[0040] 21. Contact component; 211. U-shaped frame; 2111. Lower L-shaped rod; 2112. Sleeve; 2113. Fixed screw; 2114. Upper L-shaped rod; 212. Conductive contact; 213. Hinge; 214. Torsion spring; 215. Wire; 22. Moving component; 221. Motor; 222. Lead screw; 223. Slide block;

[0041] 224. Moving groove; 225. Connecting rod;

[0042] 3. Battery fixture;

[0043] 31. Fixed rod; 32. Fixed tube body; 33. Arc-shaped clamping plate; 34. Limit screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] In order to better explain the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings through specific embodiments.

[0045] Please refer to Figures 1 to 5 , the present utility model provides a battery short-circuit detection device, including a test cabinet 1, a battery fixture 3 and a short-circuit mechanism 2;

[0046] The battery fixture 3 is installed inside the test cabinet 1 and is used to fix the battery to be tested;

[0047] The short - circuit mechanism 2 includes a moving component 22 and a contact component 21. The moving end of the moving component 22 is connected to the contact component 21 and is used to move the contact component 21 towards the battery fixture 3;

[0048] The contact component 21 includes a U - shaped frame 211, a conductive contact piece 212, and a wire 215;

[0049] The bottoms of the two free ends of the U - shaped frame 211 are each connected to the conductive contact piece 212 through a hinge 213;

[0050] A torsion spring 214 is installed on the hinge 213. One side lever arm of the torsion spring 214 is connected to the inner wall of the U - shaped frame 211, and the other side lever arm of the torsion spring 214 is connected to the conductive contact piece 212;

[0051] The two conductive contact pieces 212 are connected to each other through a wire 215;

[0052] During use, the battery to be tested is fixed in the battery fixture 3. The moving component 22 moves the U - shaped frame 211 towards the battery fixture 3, so that the conductive contact pieces 212 at the bottom of the U - shaped frame 211 are respectively connected to the positive and negative electrodes of the battery to be tested. Under the action of the wire 215, the battery to be tested is short - circuited. When the conductive contact piece 212 contacts the polar end of the battery, under the action of the hinge 213 and the torsion spring 214, the conductive contact piece 212 can always maintain good contact with the polar end of the battery, ensuring the accuracy of the detection result.

[0053] In this embodiment, the moving component 22 includes a motor 221, a lead screw 222, a slider 223, and a connecting rod 225;

[0054] A moving groove 224 is formed on the surface of the test cabinet 1;

[0055] The lead screw 222 is installed in the moving groove 224, and one end of the lead screw 222 is connected to the motor 221;

[0056] The slider 223 is slidably installed in the moving groove 224 and is threadedly connected to the lead screw 222;

[0057] One end of the connecting rod 225 is connected to the slider 223, and the other end of the connecting rod 225 is connected to the U - shaped frame 211;

[0058] During use, the motor 221 drives the lead screw 222 to rotate, driving the slider 223 on the lead screw 222 to move along the length direction of the lead screw 222, so that the contact component 21 can move towards the battery fixture 3.

[0059] In this embodiment, the C-shaped frame 211 includes an upper L-shaped rod 2114, a lower L-shaped rod 2111, a sleeve 2112, and a fixing screw 2113;

[0060] The sleeve 2112 is fixedly installed at the top of the lower L-shaped rod 2111, and a telescopic groove corresponding to the vertical part of the upper L-shaped rod 2114 is formed at the top of the sleeve 2112;

[0061] The vertical part of the upper L-shaped rod 2114 is installed in the telescopic groove;

[0062] The fixing screw 2113 is threadedly connected to one side of the top opening of the sleeve 2112;

[0063] During use, loosen the fixing screw 2113 to adjust the distance between the upper L-shaped rod 2114 and the lower L-shaped rod 2111, and then tighten the fixing screw 2113 to achieve fixation, so as to meet the short-circuit test requirements of batteries of different specifications.

[0064] In this embodiment, the battery fixture 3 includes a fixing rod 31, a fixing tube 32, an arc-shaped clamping plate 33, and a limiting screw 34;

[0065] The fixing rod 31 is vertically arranged on the test cabinet 1;

[0066] The fixing tube 32 is installed at the top of the fixing rod 31;

[0067] The arc-shaped clamping plate 33 is installed in the fixing tube 32;

[0068] One end of the limiting screw 34 is rotatably connected to the arc-shaped clamping plate 33, the other end of the limiting screw 34 is sequentially threadedly connected to the fixing tube 32 and the fixing rod 31, and a handwheel is fixedly connected;

[0069] During use, place the battery to be tested into the fixing tube 32, and tighten the limiting screw 34 to make the arc-shaped clamping plate 33 clamp the battery in the fixing tube 32, so as to achieve effective fixation of the battery.

[0070] In this embodiment, a temperature sensor is installed in the arc-shaped clamping plate 33, and the temperature sensor is electrically connected to a data recorder. During use, the temperature information of the battery during short circuit is obtained through the temperature sensor and the data recorder and recorded.

[0071] The working principle of the present utility model is as follows:

[0072] Fix the battery to be tested in the battery fixture 3. The moving component 22 moves the C-shaped frame 211 towards the battery fixture 3, so that the conductive contacts 212 at the bottom of the C-shaped frame 211 are respectively connected to the positive and negative electrodes of the battery to be tested. Under the action of the wire 215, the battery to be tested is short-circuited. When the conductive contact 212 contacts the polar end of the battery, under the action of the hinge 213 and the torsion spring 214, the conductive contact 212 can always maintain good contact with the polar end of the battery, ensuring the accuracy of the detection result.

[0073] The circuits, electronic components and modules involved are all prior arts and can be fully implemented by those skilled in the art without further elaboration. The content protected by the present utility model does not involve the improvement of software and methods either.

[0074] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present utility model.

[0075] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A battery short circuit detection device, characterized in that, It includes a test cabinet, a battery fixture, and a short - circuit mechanism; The battery fixture is installed inside the test cabinet and is used to fix the battery to be tested; The short - circuit mechanism includes a moving component and a contact component. The moving end of the moving component is connected to the contact component and is used to move the contact component towards the battery fixture; The contact component includes a C - shaped frame, a conductive contact piece, and a wire; The bottoms of the two free ends of the C - shaped frame are both connected to the conductive contact piece through hinges; A torsion spring is installed on the hinge. One side force arm of the torsion spring is connected to the inner wall of the C - shaped frame, and the other side force arm of the torsion spring is connected to the conductive contact piece; The two conductive contact pieces are connected to each other through the wire; 2. The battery short-circuit detection device according to claim 1, characterized in that, The moving component includes a motor, a lead screw, a slider, and a connecting rod; A moving groove is formed on the surface of the test cabinet; The lead screw is installed in the moving groove, and one end of the lead screw is connected to the motor; The slider is slidably installed in the moving groove and is threadedly connected to the lead screw; One end of the connecting rod is connected to the slider, and the other end of the connecting rod is connected to the C - shaped frame; 3. The battery short circuit detection device according to claim 1, characterized in that, The C - shaped frame includes an upper L - shaped rod, a lower L - shaped rod, a sleeve, and a fixing screw; The sleeve is fixedly installed on the top of the lower L - shaped rod, and a telescopic groove corresponding to the vertical part of the upper L - shaped rod is formed on the top of the sleeve; The vertical part of the upper L - shaped rod is installed in the telescopic groove; The fixing screw is threadedly connected to one side of the top opening of the sleeve; 4. A battery short-circuit detection device according to claim 1, characterized in that, The battery fixture includes a fixing rod, a fixing tube body, an arc - shaped clamping plate, and a limit screw; The fixing rod is vertically arranged on the test cabinet; The fixing tube body is installed on the top of the fixing rod; The arc - shaped clamping plate is installed inside the fixing tube body; One end of the limit screw is rotatably connected to the arc - shaped clamping plate. The other end of the limit screw is sequentially threadedly connected to the fixing tube body and the fixing rod and is fixedly connected with a handwheel; 5. The battery short-circuit detection device according to claim 4, wherein A temperature sensor is installed inside the arc - shaped clamping plate, and the temperature sensor is electrically connected to a data recorder.

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