Device for detecting wettability of battery pole piece

Abstract

The utility model discloses a device for detecting the wettability of a battery pole piece, and the device comprises an electrolyte tank which is used for storing electrolyte; the support plate is arranged on one side of the electrolyte tank; the plurality of fixing pieces are arranged on the supporting plate, and the fixing pieces are used for fixing pole pieces and can enable the bottoms of the pole pieces to be soaked in the electrolyte of the electrolyte tank; the scale is arranged on the supporting plate, the scale distribution direction of the scale is parallel to the depth direction of the electrolyte tank, and the scale is used for reading infiltration data of the pole piece. According to the utility model, the pole piece is fixed through the fixing piece, so that part of the structure of the pole piece is soaked in the electrolyte tank, then the infiltration data of the pole piece is directly read through the scale, and the device has the advantages of simplicity in operation and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and further relates to a battery pole piece wetting performance detection device. Background Art

[0002] The wettability of lithium-ion battery electrodes in electrolytes is a key indicator for evaluating electrode materials. This often determines the performance of lithium-ion batteries. Poor electrode wettability results in a longer lithium-ion transmission path, hindering the movement of lithium ions between the positive and negative electrodes. Electrodes not in contact with the electrolyte cannot participate in the battery's electrochemical reactions, increasing the battery's interfacial resistance and affecting the battery's rate performance, discharge capacity, and service life.

[0003] Existing battery cell technology often uses a wetting angle meter to measure the wetting angle to evaluate the wetting performance. This method requires the use of a wetting angle tester, and its testing steps are not only relatively complicated, but also require specialized training to operate, resulting in high testing costs and low efficiency.

[0004] Therefore, it is necessary to design a battery electrode wetting performance detection device to solve the above problems. Utility Model Content

[0005] In response to the above technical problems, the purpose of the present utility model is to provide a battery electrode wetting performance detection device, which fixes the electrode by a fixing part so that part of the structure of the electrode is immersed in an electrolyte tank, and then the wetting data of the electrode is directly read by a ruler. It has the advantages of simple operation and low cost.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a battery electrode wettability detection device, comprising:

[0007] an electrolyte tank for storing electrolyte;

[0008] a support plate, disposed on one side of the electrolyte tank;

[0009] A plurality of fixing members are provided on the support plate, the fixing members are used to fix the electrode piece and enable the bottom of the electrode piece to be immersed in the electrolyte of the electrolyte tank;

[0010] A ruler is provided on the support plate, the scale distribution direction of the ruler is parallel to the depth direction of the electrolyte tank, and the ruler is used to read the wetting data of the electrode.

[0011] In some embodiments, the fixing member is movably or detachably provided on the support plate, so that the electrode can move toward or away from the electrolyte tank.

[0012] In some embodiments, the fixing member includes a magnetic member, the support plate is provided with a magnetic portion, and the pole piece is fixed to the support plate via the magnetic member.

[0013] In some embodiments, the magnetic member includes a magnet block, the magnetic portion includes a magnetic strip, the magnetic strip is fixed to the support plate, the length direction of the magnetic strip is parallel to the length direction of the scale, the magnet block is magnetically connected to the magnetic strip, so that the pole piece is sandwiched between the magnet block and the magnetic strip;

[0014] Alternatively, the magnetic component includes a magnetic block, the magnetic portion includes a magnet bar, the magnet bar is fixed to the support plate, the length direction of the magnet bar is parallel to the length direction of the ruler, and the magnetic block is magnetically connected to the magnet bar to clamp the pole piece between the magnetic block and the magnet bar.

[0015] In some embodiments, the fixing member includes a sliding member and an opening and closing clamp, the sliding member is arranged on the support plate, and the opening and closing clamp is connected to the support plate through the sliding member, so that the opening and closing clamp can move toward or away from the electrolyte tank, and the opening and closing clamp is used to fix the electrode.

[0016] In some embodiments, a plurality of the scales are provided, and the plurality of the scales are arranged in parallel, and each of the scales is located on one side of the fixing member, and is used to read the wetting data of the corresponding electrode.

[0017] In some embodiments, the further comprising: a slide bar assembly;

[0018] The slide bar assembly includes a cross bar, a slide rail and a slider. The slide rail is arranged on the support plate, and the slider is adapted to be installed on the slide rail. The cross bar is connected to the slider so that the cross bar can move back and forth along the axial direction of the slide rail. The cross bar is parallel to the scale distribution direction of the ruler.

[0019] In some embodiments, further comprising:

[0020] The base is provided with the electrolyte tank on the base, and the support plate is provided on the base and is provided at a preset angle with respect to the base.

[0021] In some embodiments, the base is provided with two spaced apart fixing ears, each of which is provided with a pin hole;

[0022] Pins are respectively provided on both sides of the bottom of the support plate, and the pins are respectively inserted into corresponding pin holes, so that the support plate is rotatably connected to the base.

[0023] In some embodiments, further comprising:

[0024] An electric push rod is fixed on the base and is located on a side of the support plate away from the electrolyte tank. The telescopic end of the electric push rod is connected to the support plate so that the electric push rod can adjust the angle between the support plate and the base.

[0025] Compared with the prior art, the battery electrode wettability detection device provided by the present invention has at least one of the following beneficial effects:

[0026] 1. The battery electrode wetting performance detection device provided by the utility model fixes the electrode by a fixing part so that part of the electrode structure is immersed in the electrolyte tank, and then the electrode wetting data is directly read by a ruler. It has the advantages of simple operation and low cost. In addition, the position of the fixing part relative to the support plate is adjustable, so that the device can be applied to electrodes of different specifications, thereby improving the scope of application of the device.

[0027] 2. The battery electrode wetting performance detection device provided by the present invention can detect multiple electrodes at the same time, and by setting a sliding rod assembly and moving the cross bar to the maximum wetting height, the difference in wetting height of different electrodes can be clearly compared, avoiding the problem of inaccuracy that may exist in naked eye observation.

[0028] 3. The battery electrode wetting performance detection device provided by the present invention sets the angle between the support plate and the base to be adjustable, so that the electrode can be in an inclined state during detection. The inclined support plate can facilitate the installation of the electrode and also facilitate the reading of data. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0030] Figure 1 This is a schematic structural diagram of a battery electrode wettability detection device according to a preferred embodiment of the present invention;

[0031] Figure 2 This is a top view of a battery electrode wettability detection device according to a preferred embodiment of the present invention;

[0032] Figure 3 This is a front view of a battery electrode wettability detection device according to a preferred embodiment of the present invention;

[0033] Figure 4 It is a side view of a battery electrode wettability detection device according to a preferred embodiment of the present invention.

[0034] Description of Figure Numbers:

[0035] Electrolyte tank 1, support plate 2, pin 21, fixing part 3, pole piece 31, magnetic part 32, magnetic part 33, scale 4, slide bar assembly 5, cross bar 51, slide rail 52, slider 53, base 6, fixing ear 61, electric push rod 7. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0037] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0038] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0039] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In one embodiment, the reference Figures 1 to 4The present invention provides a device for detecting the wettability of a battery electrode, comprising: an electrolyte tank 1, a support plate 2, a plurality of fixings 3, and a scale 4. The electrolyte tank 1 is used to store electrolyte; the support plate 2 is disposed on one side of the electrolyte tank 1; the fixings 3 are disposed on the support plate 2, and are used to secure an electrode 31 so that the bottom of the electrode 31 is immersed in the electrolyte in the electrolyte tank 1; the scale 4 is disposed on the support plate 2, with the scale distribution direction of the scale 4 parallel to the depth direction of the electrolyte tank 1, and is used to read the wettability data of the electrode 31.

[0042] In this embodiment, the electrode 31 is fixed by the fixing member 3 so that part of the structure of the electrode 31 is immersed in the electrolyte tank 1, and then the wetting data of the electrode 31 is directly read by the ruler 4, which has the advantages of simple operation and low cost.

[0043] In one embodiment, the reference Figures 1 to 4 The fixing member 3 is movably or detachably mounted on the support plate 2, allowing the electrode 31 to move toward or away from the electrolyte tank 1. By making the position of the fixing member 3 relative to the support plate 2 adjustable, the device can be applied to electrode 31 of different specifications, thereby increasing the applicability of the device.

[0044] For example, see the attached Figure 1 , the fixing member 3 includes a magnetic member 32, and a magnetic portion 33 is provided on the support plate 2. The pole piece 31 is fixed to the support plate 2 through the magnetic member 32. The magnetic member 32 includes a magnet block, and the magnetic portion 33 includes a magnetic strip. The magnetic strip can be a steel strip or a magnet strip, or other object that can be magnetically attracted to the magnet block. The magnetic strip is fixed to the support plate 2, and the length direction of the magnetic strip is parallel to the length direction of the scale 4. The magnet block is magnetically connected to the magnetic strip to sandwich the pole piece 31 between the magnet block and the magnetic strip. Alternatively, the magnetic member 32 includes a magnetic block. The magnetic block can be a steel block or a magnet block, or other object that can be magnetically attracted to the magnet strip. The magnetic portion 33 includes a magnet strip. The magnet strip is fixed to the support plate 2, and the length direction of the magnet strip is parallel to the length direction of the scale 4. The magnetic block is magnetically connected to the magnet strip to sandwich the pole piece 31 between the magnetic block and the magnet strip.

[0045] Illustratively, the fixing member 3 includes a sliding member and an opening and closing clamp. The sliding member is disposed on the support plate 2 and may be a slider rail structure. The opening and closing clamp is connected to the support plate 2 via the sliding member, allowing the opening and closing clamp to move toward or away from the electrolyte tank 1. The opening and closing clamp can be opened and closed to fix or release the electrode 31.

[0046] It should be pointed out that the specific structure of the fixing member 3 is described in accordance with the drawings in the specification. In actual use, any structure or device that can move the electrode 31 toward or away from the electrolyte tank 1 is acceptable. This is only for the purpose of better illustrating the present invention and should not constitute a limitation to the present invention.

[0047] In one embodiment, the reference Figures 1 to 4 Scale 4 is provided with graduations, and the distance between the bottom of the scale and the bottom of the electrolyte tank 1 is known. By providing graduations on the sidewalls of the electrolyte tank 1, the depth of the electrolyte in the electrolyte tank 1 can also be obtained, and thus the distance between the bottom of the scale 4 and the electrolyte surface can also be obtained. The infiltration distance is the reading on the scale 4 corresponding to the maximum infiltration height of the electrode 31 plus the distance between the bottom of the scale 4 and the electrolyte surface.

[0048] There are multiple scales 4, which are arranged in parallel. Each scale 4 is located on one side of a fixing member 3 and is used to read the wettability data of the corresponding electrode 31. This device can perform wettability tests on multiple electrode 31 at the same time, improving test efficiency.

[0049] Furthermore, the battery electrode wetting performance detection device also includes: a slide bar assembly 5; the slide bar assembly 5 includes a cross bar 51, a slide rail 52 and a slider 53, the slide rail 52 is arranged on the support plate 2, and the slider 53 is adapted to be installed on the slide rail 52, the cross bar 51 is connected to the slider 53, so that the cross bar 51 can move back and forth along the axial direction of the slide rail 52, and the cross bar 51 is parallel to the scale distribution direction of the ruler 4.

[0050] For example, see the attached Figures 1 to 4 Two slide rails 52 and two sliders 53 are provided. The two slide rails 52 are arranged in parallel and fixed to the two sides of the support plate 2. The two sliders 53 are respectively adapted to be connected to the corresponding slide rails 52. The two ends of the crossbar 51 are fixedly connected to the two sliders 53. By synchronously sliding the sliders 53 on both sides, the crossbar 51 can be driven to reciprocate along the axis of the slide rails 52. It is also possible to provide a damping member between the slider 53 and the slide rail 52 so that the slider 53 can hover at any position along the axis of the slide rail 52.

[0051] In this embodiment, multiple pole pieces 31 can be inspected simultaneously, and by setting the slide bar assembly 5 and moving the cross bar 51 to the maximum wetting height, the difference in wetting height of different pole pieces 31 can be clearly compared, avoiding the problem of inaccuracy in naked eye observation.

[0052] In one embodiment, the reference Figures 1 to 4The battery electrode wettability testing device further includes a base 6, an electrolyte tank 1 disposed on the base 6, and a support plate 2 disposed on the base 6 at a predetermined angle relative to the base 6. The angle between the support plate 2 and the base 6 is 0-90°, such as 30°, 45°, 60°, or 75°. By integrating the various components of the device on the base 6, the device can be easily moved and has a more compact and stable structure.

[0053] Furthermore, the base 6 is provided with two spaced-apart fixing ears 61, each of which is provided with a pin hole. Pins 21 are provided on either side of the bottom of the support plate 2, which are inserted into corresponding pin holes, thereby rotatably connecting the support plate 2 to the base 6. The fixing ears 61 are arranged along the sides of the electrolyte tank 1, so that when the support plate 2 is perpendicular to the top surface of the base 6, the side surface of the support plate 2 is flush with the side wall of the electrolyte tank 1. The fixing ears 61 can also be configured as an L-shaped structure, that is, when the support plate 2 is perpendicular to the top surface of the base 6, the support plate 2 is located above the electrolyte tank 1.

[0054] Furthermore, the battery electrode wetting performance detection device also includes: an electric push rod 7, which is fixed on the base 6 and is located on the side of the support plate 2 away from the electrolyte tank 1. The telescopic end of the electric push rod 7 is connected to the support plate 2, so that the electric push rod 7 can adjust the angle between the support plate 2 and the base 6.

[0055] It should be pointed out that the specific structure of the angle adjustment between the support plate 2 and the base 6 is described in accordance with the drawings in the specification. In actual use, other structures can also be adopted as long as they can achieve the above functions. This is only for the purpose of better illustrating the present invention and should not constitute a limitation to the present invention.

[0056] In this embodiment, by setting the angle between the support plate 2 and the base 6 to be adjustable, the support plate 2 can be tilted when testing or installing the electrode 31. Compared with a vertical support plate 2, the tilted support plate 2 makes the installation of the electrode 31 more convenient. At the same time, the tilted electrode 31 has a longer infiltration distance than the vertical electrode 31, which can more clearly see the infiltration difference between multiple electrode 31, facilitating data reading.

[0057] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0058] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A battery electrode wettability detection device, characterized in that: include: an electrolyte tank for storing electrolyte; a support plate, disposed on one side of the electrolyte tank; A plurality of fixing members are provided on the support plate, the fixing members are used to fix the electrode piece and enable the bottom of the electrode piece to be immersed in the electrolyte of the electrolyte tank; A ruler is provided on the support plate, the scale distribution direction of the ruler is parallel to the depth direction of the electrolyte tank, and the ruler is used to read the wetting data of the electrode.

2. The battery electrode wettability detection device according to claim 1, characterized in that: The fixing member is movably or detachably arranged on the support plate, so that the pole piece can move toward or away from the electrolyte tank.

3. The battery electrode wettability detection device according to claim 2, characterized in that: The fixing member includes a magnetic member, a magnetic portion is provided on the support plate, and the pole piece is fixed to the support plate through the magnetic member.

4. The battery electrode wettability detection device according to claim 3, characterized in that: The magnetic member includes a magnet block, the magnetic portion includes a magnetic strip, the magnetic strip is fixed to the support plate, the length direction of the magnetic strip is parallel to the length direction of the scale, the magnet block is magnetically connected to the magnetic strip, so that the pole piece is sandwiched between the magnet block and the magnetic strip; Alternatively, the magnetic component includes a magnetic block, the magnetic portion includes a magnet bar, the magnet bar is fixed to the support plate, the length direction of the magnet bar is parallel to the length direction of the ruler, and the magnetic block is magnetically connected to the magnet bar to clamp the pole piece between the magnetic block and the magnet bar.

5. The battery electrode wettability detection device according to claim 2, characterized in that: The fixing member includes a sliding member and an opening and closing clamp. The sliding member is arranged on the support plate. The opening and closing clamp is connected to the support plate through the sliding member, so that the opening and closing clamp can move toward or away from the electrolyte tank. The opening and closing clamp is used to fix the electrode.

6. The battery electrode wettability detection device according to claim 1, characterized in that: There are multiple scales, which are arranged in parallel. Each scale is located on one side of the fixing member and is used to read the wetting data of the corresponding electrode.

7. The battery electrode wettability detection device according to claim 6, characterized in that: Also includes: Slider assembly; The slide bar assembly includes a cross bar, a slide rail and a slider. The slide rail is arranged on the support plate, and the slider is adapted to be installed on the slide rail. The cross bar is connected to the slider so that the cross bar can move back and forth along the axial direction of the slide rail. The cross bar is parallel to the scale distribution direction of the ruler.

8. The battery electrode wettability detection device according to any one of claims 1 to 7, characterized in that: Also includes: The base is provided with the electrolyte tank on the base, and the support plate is provided on the base and is provided at a preset angle with respect to the base.

9. The battery electrode wettability detection device according to claim 8, characterized in that: The base is provided with two fixed ears arranged at intervals, and the fixed ears are provided with pin holes; Pins are respectively provided on both sides of the bottom of the support plate, and the pins are respectively inserted into corresponding pin holes, so that the support plate is rotatably connected to the base.

10. The battery electrode wettability detection device according to claim 9, characterized in that: Also includes: An electric push rod is fixed on the base and is located on a side of the support plate away from the electrolyte tank. The telescopic end of the electric push rod is connected to the support plate so that the electric push rod can adjust the angle between the support plate and the base.

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