Clamping device for lithium battery detection

Abstract

The utility model discloses a clamping device for lithium battery detection, which comprises a placement box, a lithium battery to be detected is placed in the placement box, the inner bottom wall of the placement box is in sliding connection with two limiting clamping plates which can be close to or far away from each other so as to clamp or loosen the lithium battery, water cooling pieces are arranged in the limiting clamping plates, and the water cooling pieces are communicated with a cooling source. Thus, the water cooling part is arranged in the limiting clamping plate, after the limiting clamping plate is used for limiting the lithium battery, the limiting clamping plate can make direct contact with the lithium battery, cooling water can be conveniently injected into the water cooling part after high-temperature detection is completed, the lithium battery can be directly and rapidly cooled, and the cooling efficiency of the lithium battery is effectively improved; and a good safety guarantee is provided for high-temperature detection of the lithium battery. The problems that the lithium battery is subjected to long-time cycle test and heat dissipation is not timely, so that the interior of the battery is further degraded, the internal resistance of the battery is possibly increased, even the dangerous phenomena of thermal runaway and the like are caused, and certain potential safety hazards exist are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery detection, in particular to a clamping device for lithium battery detection. Background Art

[0002] Currently, lithium batteries need to verify their cycle life, operating life or environmental adaptability before use, and lithium battery fixtures are needed during the testing process.

[0003] The traditional tooling fixture is only two steel plates, which only play the role of fixing the battery and have little effect on improving the battery's heat dissipation capacity. When placing the lithium battery in the current temperature detection equipment, it is necessary to use a clamping device to place it uniformly. During the high-temperature detection of the lithium battery, the temperature of the lithium battery will continue to rise. When the detection is completed, the temperature of the lithium battery cannot drop quickly. It is necessary to take it out and then cool it down separately, or it takes a long time to adapt to the environment and wait for the test sample to reach the target temperature. The process is cumbersome, resulting in the lithium battery cooling time being too long and the cooling efficiency is insufficient. If a long-term cycle test is carried out and the heat dissipation is not timely, it will cause further deterioration of the battery, which may eventually increase the internal resistance of the battery, and even dangerous phenomena such as thermal runaway. There are certain safety hazards. Utility Model Content

[0004] In order to solve the technical problems existing in the background technology, the utility model provides a clamping device for lithium battery detection.

[0005] The utility model provides a clamping device for lithium battery testing, comprising a placement box, in which a lithium battery to be tested is placed, wherein a bottom wall of the placement box is slidably connected with two limit clamps that can move closer to or farther away from each other to clamp or loosen the lithium battery, and a water cooling component is arranged in the limit clamp, which is connected to a cooling source.

[0006] Preferably, the bottom wall of the placement box is provided with two parallel and spaced sliding grooves, and two sliding blocks are fixed to the bottom end of each of the limiting clamps, and the two sliding blocks can extend into the two sliding grooves and slide respectively.

[0007] Preferably, the water-cooling component is configured as two staggered wavy cooling tubes, a connecting tube is provided between the two slide grooves close to each of the limiting clamps, the bottom ends of the two wavy cooling tubes are respectively connected to the two ends of the connecting tube, and the two connecting tubes close to the two limiting clamps are connected through a metal hose.

[0008] Preferably, a groove is further provided in the middle of the inner bottom wall of the placement box, in which a plurality of parallel supporting ribs for supporting the lithium battery are fixed, and a plurality of card slots which can respectively engage with a plurality of the supporting ribs are provided at the bottom end of the limiting clamp, and the bottom end of the limiting clamp is slidably connected to the supporting ribs through the card slots.

[0009] Preferably, an inverted U-shaped plate is fixed to the top of the limiting clamp, and the inverted U-shaped plate is clamped on the placement box. A plurality of positioning holes are opened at the front end of the placement box. The front side plate of the inverted U-shaped plate is threadedly connected with a fastening screw, and one end of the fastening screw can be clamped in the positioning hole.

[0010] Preferably, it also includes a cover plate, one end of which is rotatably connected to one side of the upper end of the placement box, a storage box for storing fire extinguishing powder is fixed to the top of the cover plate, the top opening of the storage box is threadedly connected to a box cover, the bottom end of the cover plate is provided with a through opening connected to the storage box, and a baffle that can be pulled back and forth to open or close the through opening is slidably connected to the front end of the cover plate.

[0011] Preferably, a handle is fixedly connected to the front end of the baffle.

[0012] Preferably, four corners of the bottom end of the cover plate are fixedly connected with rubber pads.

[0013] In summary, the utility model has the following beneficial effects: by setting two slidable limit clamps in the placement box, and setting a water cooling part in the limit clamps, the limit clamps can be directly in contact with the lithium battery after the lithium battery is limited by the limit clamps, and it is convenient to inject cooling water into the water cooling part after the high temperature detection is completed, so that the lithium battery can be directly cooled quickly, effectively improving the cooling efficiency of the lithium battery, shortening the cooling time of the lithium battery, and providing good safety protection for the high temperature detection of the lithium battery. It avoids the problem that the lithium battery is subjected to long-term cycle testing and the heat dissipation is not timely, which will cause further deterioration of the battery, which may eventually increase the internal resistance of the battery, and even dangerous phenomena such as thermal runaway, and there are certain safety hazards.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the clamping device for lithium battery detection in the embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure inside the placement box in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the interior of the limiting splint in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the bottom of the cover plate in the embodiment of the utility model.

[0019] In the figure:

[0020] 1. Placement box; 2. Limiting splint; 3. Cover plate; 4. Corrugated cooling pipe; 5. Connecting pipe; 6. Slider; 7. Slide groove; 8. Support rib; 9. Slot; 10. Fastening screw; 11. Positioning hole; 12. Storage box; 13. Handle; 14. Box cover; 15. Rubber pad; 16. Baffle. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] like Figure 1-4 As shown, a clamping device for lithium battery testing proposed in this embodiment includes a placement box 1, in which the lithium battery to be tested is placed, and the bottom wall of the placement box 1 is slidably connected with two limiting clamps 2 that can move closer or farther away from each other to clamp or loosen the lithium battery, and a water-cooling component is provided in the limiting clamp 2, which is connected to a cooling source.

[0023] Furthermore, if Figure 2 As shown, the bottom wall of the placement box 1 is provided with two parallel and spaced slide grooves 7, and two sliders 6 are fixed to the bottom end of each limiting clamp plate 2, and the two sliders 6 can respectively extend into the two slide grooves 7 and slide. The distance between the two limiting clamp plates 2 can be adjusted according to the size of the lithium battery to fix lithium batteries of different sizes and widths, and the application range is wide.

[0024] Furthermore, a groove is provided in the middle of the inner bottom wall of the placement box 1, in which a plurality of parallel supporting ribs 8 for supporting lithium batteries are fixed, and a plurality of slots 9 capable of respectively engaging with the plurality of supporting ribs 8 are provided at the bottom end of the limiting clamp 2, and the bottom end of the limiting clamp 2 is slidably connected with the supporting ribs 8 through the slots 9. The plurality of supporting ribs 8 are provided to support the lithium battery module, so that the temperature detection device can perform heating detection on the lithium battery, and after the detection is completed, it can also provide convenience for heat dissipation and cooling of the lithium battery module.

[0025] In this way, by setting two slidable limit clamps 2 in the placement box 1 and setting a water cooling part in the limit clamps 2, the limit clamps 2 can be directly in contact with the lithium battery after the lithium battery is limited by the limit clamps 2. After the high-temperature detection is completed, it is convenient to inject cooling water into the water cooling part, and the lithium battery can be directly cooled quickly, which effectively improves the cooling efficiency of the lithium battery, shortens the cooling time of the lithium battery, and provides good safety protection for the high-temperature detection of the lithium battery. It avoids the problem that the lithium battery is subjected to long-term cycle testing and the heat dissipation is not timely, which will cause further deterioration of the battery, which may eventually increase the internal resistance of the battery, or even dangerous phenomena such as thermal runaway, and there are certain safety hazards.

[0026] In this embodiment, Figure 3 As shown, the water cooling part is provided with two staggered wave-shaped cooling pipes 4, and a connecting pipe 5 is provided between two slide grooves 7 near each limit clamping plate 2. The bottom ends of the two wave-shaped cooling pipes 4 are respectively connected to the two ends of the connecting pipe 5, and the two connecting pipes 5 near the two limit clamping plates 2 are connected through a metal hose. The wave-shaped design increases the contact surface between the cooling pipe 4 and the limit clamping plate 2 when cooling water is injected into the wave-shaped cooling pipe 4, so as to improve the cooling effect of the limit clamping plate 2 on the lithium battery module.

[0027] like Figure 1 and Figure 3 As shown, an inverted U-shaped plate is fixed to the top of the limiting clamp plate 2, and the inverted U-shaped plate is clamped on the placement box 1. The front end of the placement box 1 is provided with a plurality of positioning holes 11. The front side plate of the inverted U-shaped plate is threadedly connected with a fastening screw 10, and one end of the fastening screw 10 can be clamped in the positioning hole 11. In this way, it is convenient to fasten the limiting clamp plate 2 after moving and adjusting its position, and it can be applied to limit the position of lithium batteries of different quantities and volumes, and the operation is simple and convenient.

[0028] In this embodiment, Figure 1 and Figure 4 As shown, it also includes a cover plate 3, one end of the cover plate 3 is rotatably connected to one side of the upper end of the placement box 1, a storage box 12 for storing fire extinguishing powder is fixed to the top of the cover plate 3, the top opening of the storage box 12 is threadedly connected to a box cover 14, the bottom end of the cover plate 14 is provided with a through opening connected to the storage box 12, and a baffle 16 that can be pulled back and forth to open or close the through opening is slidably connected to the front end of the cover plate 14.

[0029] Specifically, the four corners of the bottom end of the cover plate 3 are fixedly connected with rubber pads 15, and the front end of the baffle 16 is fixedly connected with a handle 13. The rubber pads 15 are set so that the cover plate 3 and the lithium battery module can maintain direct soft contact to prevent the cover plate 3 from rotating and causing damage to the lithium battery module.

[0030] In summary, when in use, first place the lithium battery to be tested in the placement box 1, and support its bottom with a plurality of supporting ribs 8, then move the limiting clamp 2 to fit the lithium battery, and fix the limiting clamp 2 by tightening the fastening screws 10 to the corresponding positioning holes 11, so that the limiting clamp 2 clamps and limits the lithium battery, and connects the wavy cooling pipe 4 in the limiting clamp 2 to the cooling water source through the connecting pipe, and then rotate the cover plate 3 to fit the top of the lithium battery, and place the After the box 1 is placed in the temperature detection equipment to perform high-temperature detection on the lithium battery, cooling water is injected into the wavy cooling tube 4 in the limiting clamp 2 through an external water pump, so that the cooling water passes through each wavy cooling tube 4 in the two limiting clamps 2 in turn to directly and quickly cool down the lithium battery. Secondly, when the lithium battery module accidentally ignites, the baffle 16 can be pulled out to allow the fire extinguishing powder in the storage box 12 to fall from the opening and quickly cover the flame. Combined with the cooling effect of the limiting clamp 2, the fire can be quickly extinguished.

[0031] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A clamping device for lithium battery testing, comprising a placement box, wherein the placement box is used to place the lithium battery to be tested, characterized in that: The bottom wall of the placement box is slidably connected with two limit clamps that can move closer to or farther away from each other to clamp or loosen the lithium battery. A water cooling component is arranged in the limit clamp, and the water cooling component is connected to a cooling source.

2. The lithium battery detection clamping device according to claim 1, characterized in that: The bottom wall of the placement box is provided with two parallel and spaced sliding grooves, and the bottom end of each of the limiting clamps is fixed with two sliding blocks, and the two sliding blocks can extend into the two sliding grooves and slide respectively.

3. The lithium battery testing clamping device according to claim 2, characterized in that: The water-cooling component is configured as two staggered wavy cooling tubes, and a connecting tube is provided between the two slide grooves close to each of the limiting clamps. The bottom ends of the two wavy cooling tubes are respectively connected to the two ends of the connecting tube, and the two connecting tubes close to the two limiting clamps are connected through a metal hose.

4. The lithium battery testing clamping device according to claim 1, characterized in that: A groove is also provided in the middle of the inner bottom wall of the placement box, in which a number of parallel supporting ribs for supporting lithium batteries are fixed, and a number of card slots that can respectively engage with a number of the supporting ribs are provided at the bottom end of the limiting clamp, and the bottom end of the limiting clamp is slidably connected to the supporting ribs through the card slots.

5. The lithium battery testing clamping device according to claim 1, characterized in that: An inverted U-shaped plate is fixed to the top of the limiting clamp, and the inverted U-shaped plate is clamped on the placement box. A plurality of positioning holes are opened at the front end of the placement box. The front side plate of the inverted U-shaped plate is threadedly connected with a fastening screw, and one end of the fastening screw can be clamped in the positioning hole.

6. The lithium battery testing clamping device according to claim 1, characterized in that: It also includes a cover plate, one end of which is rotatably connected to one side of the upper end of the placement box, a storage box for storing fire extinguishing powder is fixed to the top of the cover plate, a box cover is threadedly connected to the top opening of the storage box, a through opening connected to the storage box is opened at the bottom end of the cover plate, and a baffle that can be pulled back and forth to open or close the through opening is slidably connected to the front end of the cover plate.

7. The lithium battery testing clamping device according to claim 6, characterized in that: A handle is fixedly connected to the front end of the baffle.

8. The lithium battery testing clamping device according to claim 6, characterized in that: The four corners of the bottom end of the cover plate are fixedly connected with rubber pads.

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