Lithium ion battery diaphragm ion permeability detection device

Abstract

The invention relates to the technical field of ion permeability detection, and discloses a lithium ion battery diaphragm ion permeability detection device, which comprises a detection box, and also comprises four batteries which are uniformly distributed at equal intervals in a straight line; the round roller is rotationally arranged above the detection box and the batteries, and the round roller is provided with a connecting assembly which is connected with the four batteries one by one in sequence; the detection assembly is arranged on the detection box, and the detection assembly is used for displaying the ion permeability in the detection box. The charging voltage can be changed by automatically changing the number of the batteries connected in series, and the electromagnet can generate magnetism which is in direct proportion to current, so that line segments at different positions can be drawn on the drawing paper by the drawing pen under the condition of different voltages, more clear and visual recording and observation can be realized, and the working efficiency is improved. Therefore, a worker can quickly calculate the permeability of the lithium ions, and the use effect of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of ion permeability detection technology, and more particularly to a device for detecting the ion permeability of lithium-ion battery separators. Background Technology

[0002] The ion permeability of a lithium-ion battery separator is one of the important parameters for evaluating its performance. The separator is a key component of a lithium-ion battery, which effectively isolates the positive and negative electrodes to prevent short circuits, while allowing lithium ions to pass through during charging and discharging. Ion permeability reflects the separator's ability to conduct ions while allowing lithium ions to pass through.

[0003] Current lithium-ion battery separator ion permeability detection devices can detect ion permeability using current and voltage methods, but they lack integrated operation during detection. This results in slow and inefficient detection, and the results are not intuitive, thus reducing the effectiveness of the detection. Therefore, there is an urgent need to design a lithium-ion battery separator ion permeability detection device. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art, and to propose a lithium-ion battery separator ion permeability detection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A lithium-ion battery separator ion permeability testing device, including a testing chamber, and also including: There are four batteries, which are evenly distributed in a straight line with equal spacing. Each battery is fixed with an L-shaped rod installed on the top of the test box for fixing the battery. A circular roller is rotatably positioned above the detection box and the battery. The roller is equipped with a connecting component that connects four batteries one by one in sequence, which is used to change the number of batteries connected in series to change the voltage. The detection component is installed on the detection chamber and is used to display the ion permeability inside the detection chamber, making the detection results more intuitive.

[0006] As a further technical solution of the present invention, negative and positive electrodes are vertically installed at both ends inside the detection box, and symmetrically arranged clamps are installed inside the detection box. The clamps are detachable, and a diaphragm is clamped between the two clamps. In addition, electrolyte and lithium atoms are also provided inside the detection box to simulate the charging state of a lithium battery.

[0007] As a further technical solution of the present invention, a first L-shaped conductor with electrical connection is installed on the top of the negative electrode, and a second L-shaped conductor with electrical connection is installed on the top of the positive electrode. The first L-shaped conductor and the second L-shaped conductor are used to allow electrons to pass through and transfer.

[0008] As a further technical solution of the present invention, side plates are vertically fixedly installed at both ends of the top of the detection box, and a circular roller is rotatably installed between the two side plates. A drive motor is installed on the outer side of one of the side plates, and the output shaft of the drive motor is installed at the center of the end face of the circular roller for driving the circular roller to rotate.

[0009] As a further technical solution of the present invention, the connecting component includes: a second conductive plate, there are six second conductive plates, the six second conductive plates are distributed in an increasing manner from zero to three around the roller, and the spacing between longitudinally adjacent second conductive plates is the same as the spacing between batteries, for connecting multiple batteries in series to increase the voltage, so as to realize the detection of ion permeability.

[0010] As a further technical solution of the present invention, a first conductive plate distributed around the roller is also installed on the roller, and the first conductive plate is arranged perpendicular to the roller. The four first conductive plates are evenly spaced circumferentially and axially. The width of the first conductive plate is smaller than that of the second conductive plate. It should be noted that the width of the first conductive plate is smaller than the distance between adjacent batteries, and the width of the second conductive plate is equal to the distance between adjacent batteries.

[0011] As a further technical solution of the present invention, straight guide posts are horizontally installed on the sides of the four first conductive plates away from the second conductive plates. The lengths of the four straight guide posts decrease sequentially from the direction without the second conductive plate. All four straight guide posts can contact the end face of the first L-shaped guide post, so as to enable electrons to pass through the first L-shaped guide post to the negative electrode.

[0012] As a further technical solution of the present invention, the detection component includes: an L-shaped plate, the horizontal side of which is fixedly installed on the side of the detection box; a U-shaped frame is slidably arranged on the top of the horizontal side of the L-shaped plate; a spring rod is vertically installed on the bottom of the horizontal side of the U-shaped frame; the fixed end and the telescopic end of the spring rod are slidably connected by a spline; a three-grip chuck is installed on the telescopic end of the spring rod; a pen is fixed on the three-grip chuck; and drawing paper is pasted on the inner side of the vertical side of the L-shaped plate for the pen to draw lines on the drawing paper; and a magnet is fixedly installed on the bottom of the three-grip chuck.

[0013] As a further technical solution of the present invention, an electromagnet is installed on the top of the lower horizontal side of the U-shaped frame, and a first cable and a second cable are respectively installed at both ends of the electromagnet. The first cable and the second cable are respectively installed on the second L-shaped guide post and the corresponding battery end. The first cable and the second cable are detachably connected to the second L-shaped guide post and the battery end.

[0014] As a further technical solution of the present invention, a groove is horizontally opened at the bottom of the horizontal side of the L-shaped plate, and a slider is slidably installed inside the groove. The top of the slider is fixedly installed at the bottom of the horizontal side of the U-shaped frame, and a reciprocating screw is rotatably installed inside the groove. The surface of the reciprocating screw is connected to the inside of the slider by a thread. A shaft is rotatably installed at the end of the horizontal side of the L-shaped plate. The shaft is fixedly installed at the center of the end of the reciprocating screw by a connecting shaft. A small pulley is fixedly installed at the end of the shaft, and a large pulley is rotatably installed on the corresponding outer side. The side of the large pulley is fixedly installed at the center of the end face of the roller by a connecting shaft. A belt is sleeved on the surface of the small pulley and the large pulley, which is used to simultaneously change the position of the pen when switching the number of batteries connected in series, so as to realize drawing lines on different parts of the drawing paper, making the detection structure more intuitive.

[0015] The beneficial effects of this invention are as follows: This invention, through the arrangement of batteries, rollers, and detection components, can automatically change the number of batteries connected in series to change the charging voltage. Furthermore, it can generate a magnetic field through an electromagnet that is proportional to the current, allowing a pen to draw line segments at different positions on the drawing paper under different voltage conditions. This enables clearer and more intuitive recording and observation, allowing staff to quickly calculate the lithium ion penetration rate, thereby improving the effectiveness of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the lithium-ion battery separator ion permeability detection device proposed in this invention.

[0017] Figure 2 This is a top view schematic diagram of the lithium-ion battery separator ion permeability detection device proposed in this invention.

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0019] Figure 4 This is a rear view schematic diagram of the lithium-ion battery separator ion permeability detection device proposed in this invention.

[0020] Figure 5 This is a schematic diagram of the L-shaped plate and its connection structure of the lithium-ion battery separator ion permeability detection device proposed in this invention.

[0021] Figure 6 This is a schematic diagram of the lithium-ion battery separator ion permeability detection device proposed in this invention after removing the L-shaped plate.

[0022] Figure 7 This is a schematic diagram of the roller and its connection structure of the lithium-ion battery separator ion permeability detection device proposed in this invention.

[0023] In the diagram: 1. Detection box; 2. Negative electrode; 3. Positive electrode; 4. Diaphragm; 5. Clamping plate; 6. Battery; 7. Circular roller; 8. Side plate; 9. Drive motor; 10. L-shaped plate; 11. First cable; 12. Second cable; 13. U-shaped frame; 14. Spring rod; 15. Three-grip chuck; 16. Pen; 17. Magnet block; 18. Electromagnet; 19. Slide groove; 20. Reciprocating lead screw; 21. First L-shaped guide post; 22. Second L-shaped guide post; 23. Belt; 24. First conductive plate; 25. Second conductive plate; 26. Straight guide post. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see the appendix Figure 1 -Appendix Figure 7 A lithium-ion battery separator ion permeability testing device includes a testing chamber 1, and further includes: batteries 6, a roller 7, and a testing component. There are four batteries 6, which are evenly distributed in a straight line with equal spacing. Each battery 6 is fixed with an L-shaped rod installed on the top of the testing chamber 1 for fixing the battery 6. The roller 7 is rotatably positioned above the testing chamber 1 and the batteries 6. The roller 7 is equipped with a connecting component that connects the four batteries 6 one by one in sequence, which is used to change the number of batteries 6 connected in series to change the voltage. The testing component is set on the testing chamber 1 and is used to display the ion permeability inside the testing chamber 1, making the test results more intuitive. It can automatically change the number of series-connected batteries 6 to change the charging voltage, and can generate a magnetic field and current proportional to the magnetism through electromagnet 18, so that the pen 16 can draw line segments at different positions on the drawing paper under different voltage conditions, so as to achieve clearer and more intuitive recording and observation, so that staff can quickly calculate the lithium ion penetration rate.

[0027] Please see the appendix Figure 2 -Appendix Figure 7 In a preferred embodiment, a negative electrode 2 and a positive electrode 3 are vertically installed at both ends inside the detection box 1, and symmetrically arranged clamping plates 5 are installed inside the detection box 1. The clamping plates 5 are detachable, and a diaphragm 4 is clamped between the two clamping plates 5. In addition, the detection box 1 is also provided with electrolyte and lithium atoms to simulate the charging state of a lithium battery.

[0028] Please see the appendix Figure 1 - Appendix Figure 7 In a preferred embodiment, a first L-shaped post 21 with electrical connection is installed on the top of the negative electrode 2, and a second L-shaped post 22 with electrical connection is installed on the top of the positive electrode 3. The first L-shaped post 21 and the second L-shaped post 22 are used to allow electrons to pass through and transfer.

[0029] Please see the appendix Figure 2 - Appendix Figure 7 In a preferred embodiment, side plates 8 are vertically fixed at both ends of the top of the detection box 1, and a circular roller 7 is rotatably installed between the two side plates 8. A drive motor 9 is installed on the outside of one of the side plates 8, and the output shaft of the drive motor 9 is installed at the center of the end face of the circular roller 7 to drive the circular roller 7 to rotate.

[0030] Please see the appendix Figure 1 - Appendix Figure 7 In a preferred embodiment, the connecting component includes: a second conductive plate 25, there are six second conductive plates 25, the six second conductive plates 25 are distributed in an increasing order from zero to three around the roller 7, and the spacing between longitudinally adjacent second conductive plates 25 is the same as the spacing between batteries 6, for connecting multiple batteries 6 in series to increase the voltage, so as to realize the detection of ion permeability.

[0031] Please see the appendix Figure 1 - Appendix Figure 6 In a preferred embodiment, the roller 7 is further provided with a first conductive plate 24 distributed around its perimeter, and the first conductive plate 24 is arranged perpendicular to the roller 7. The four first conductive plates 24 are evenly spaced circumferentially and axially. The width of the first conductive plate 24 is smaller than that of the second conductive plate 25. It should be noted that the width of the first conductive plate 24 is smaller than the distance between adjacent batteries 6, and the width of the second conductive plate 25 is equal to the distance between adjacent batteries 6.

[0032] Please see the appendix Figure 2 - Appendix Figure 7 In a preferred embodiment, straight guide posts 26 are horizontally mounted on the sides of the four first conductive plates 24 away from the second conductive plates 25. The lengths of the four straight guide posts 26 decrease sequentially from the direction without the second conductive plates 25. All four straight guide posts 26 can contact the end face of the first L-shaped guide post 21 to allow electrons to pass through the first L-shaped guide post 21 to the negative electrode 2.

[0033] Please see the appendix Figure 1 - Appendix Figure 6In a preferred embodiment, the detection assembly includes: an L-shaped plate 10, the horizontal side of which is fixedly installed on the side of the detection box 1; a U-shaped frame 13 is slidably arranged on the top of the horizontal side of the L-shaped plate 10; a spring rod 14 is vertically installed on the bottom of the horizontal side of the U-shaped frame 13; the fixed end and the telescopic end of the spring rod 14 are slidably connected by a spline; a three-grip chuck 15 is installed on the telescopic end of the spring rod 14; a pen 16 is fixed on the three-grip chuck 15; and drawing paper is pasted on the inner side of the vertical side of the L-shaped plate 10 for the pen 16 to draw lines on the drawing paper; and a magnet block 17 is fixedly installed on the bottom of the three-grip chuck 15.

[0034] Please see the appendix Figure 1 - Appendix Figure 7 In a preferred embodiment, an electromagnet 18 is installed on the top of the lower horizontal side of the U-shaped frame 13. A first cable 11 and a second cable 12 are respectively installed at both ends of the electromagnet 18. The first cable 11 and the second cable 12 are respectively installed at the second L-shaped guide post 22 and the corresponding battery 6 end. The first cable 11 and the second cable 12 are detachably connected to the second L-shaped guide post 22 and the battery 6 end.

[0035] Please see the appendix Figure 2 - Appendix Figure 7 In a preferred embodiment, a groove 19 is horizontally provided at the bottom of the horizontal side of the L-shaped plate 10. A slider is slidably installed inside the groove 19. The top of the slider is fixedly installed at the bottom of the horizontal side of the U-shaped frame 13. A reciprocating screw 20 is rotatably installed inside the groove 19. The surface of the reciprocating screw 20 is threadedly connected to the inside of the slider. A shaft is rotatably installed at the end of the horizontal side of the L-shaped plate 10. The shaft is fixedly installed at the center of the end of the reciprocating screw 20 via a connecting shaft. A small pulley is fixedly installed at the end of the shaft. A large pulley is rotatably installed on the corresponding outer side. The side of the large pulley is fixedly installed at the center of the end face of the roller 7 via a connecting shaft. A belt 23 is sleeved on the surface of the small pulley and the large pulley. This belt is used to simultaneously change the position of the pen 16 when switching the number of batteries 6 connected in series, so as to draw lines on different parts of the drawing paper, making the detection structure more intuitive.

[0036] The diaphragm 4 is placed between two clamping plates 5 and the electrolyte and lithium atoms are placed inside the detection box 1. The switch is then turned on. It should be noted that a switch is installed on the first L-shaped guide post 21. Since the corresponding first conductive plate 24 is in contact with the battery 6 near the positive electrode 3, only one battery 6 is charging the lithium battery 6. The lithium atoms will be divided into electrons and lithium ions. The electrons at the positive electrode 3 will flow to the negative electrode 2 through the second L-shaped guide post 22, the first cable 11, the electromagnet 18, the second cable 12, the battery 6, the first conductive plate 24 in contact with it, the straight guide post 26 in contact with it, and the first L-shaped guide post 21 (it should be noted that the four straight guide posts 26 will contact the first L-shaped guide post 21 in sequence according to the rotation of the roller 7). The lithium ions inside will combine with the electrons at the negative electrode 2 again through the separator 4. When the current passes through the electromagnet 18, the electromagnet 18 generates magnetic repulsion of the magnet block 17, causing the magnet block 17 to move upward. The upward movement of the magnet block 17 drives the three-grip chuck 15 and the pen 16 to move upward, so that the pen 16 can draw line segments on the drawing paper. The drive motor 9 is started and rotates 90 degrees. It should be noted that the drive motor 9 is an intermittent motor, rotating 90 degrees at a time. The drive motor 9's operation drives the roller 7 to rotate 90 degrees. The rotation of the roller 7 drives the large pulley, belt 23, small pulley, and shaft to rotate. The shaft's rotation drives the slider to move. The slider's movement drives the U-shaped frame 13, electromagnet 18, spring rod 14, three-grip chuck 15, and pen 16 to move horizontally, enabling the pen 16 to move horizontally, facilitating subsequent line drawing at different positions on the paper. When the roller 7 rotates the first 90 degrees, it will cause a first conductive plate 24 and... The second conductive plate 25 rotates to contact the battery 6. At this time, the second conductive plate 25 is used to connect the two batteries 6 close to the positive electrode 3, while the first conductive plate 24 is connected to the second battery 6 from the positive electrode 3. At this time, two batteries 6 will charge the lithium battery 6, and the two batteries 6 are connected in series, so the charging voltage will increase. In summary, the magnetism generated by the electromagnet 18 after being energized again will cause the pen 16 to move upward and draw a line on the drawing paper again. By comparing the current when the voltage is different through the two line segments, the permeability of lithium ions can be further calculated. In summary, when the drive motor 9 rotates 90 degrees for the second time, it not only moves the pen 16, but also connects the two second conductive plates 25 to the three batteries 6 near the positive electrode 3. The first conductive plate 24 is connected to the third battery 6 from the positive electrode 3. At this time, the three batteries 6 will charge the lithium battery 6, and since the three batteries 6 are connected in series, the charging voltage will increase again. In summary, the magnetism generated by the electromagnet 18 after it is energized again will cause the pen 16 to move upward and draw a line on the drawing paper again. By comparing the current when the voltage is different through the three line segments, the permeability of lithium ions can be calculated. When the drive rotates 90 degrees for the third time, it not only moves the pen 16, but also connects the three second conductive plates 25 to the four batteries 6. The first conductive plate 24 is connected to the fourth battery 6 from the positive terminal 3. At this time, the four batteries 6 will charge the lithium battery 6, and since the four batteries 6 are connected in series, the charging voltage will increase further. In summary, the magnetism generated by the electromagnet 18 after it is energized again will cause the pen 16 to move upward and draw lines on the drawing paper again. By comparing the current when the voltage is different through the four line segments, the permeability of lithium ions can be calculated. In summary, the device can automatically change the number of batteries 6 connected in series to change the charging voltage, and can generate a magnetic field and current proportional to the magnetism through the electromagnet 18, so that the pen 16 can draw line segments at different positions on the drawing paper under different voltage conditions, so as to achieve clearer and more intuitive recording and observation, so that the staff can quickly calculate the lithium ion penetration rate, thereby improving the use effect of the device.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 lithium-ion battery separator ion permeability detection device, comprising a detection chamber (1), characterized in that, Also includes: The battery (6) has four batteries (6), which are evenly distributed in a straight line with equal spacing. Each battery (6) is fixed with an L-shaped rod installed on the top of the test box (1). A circular roller (7) is rotatably positioned above the detection box (1) and the battery (6). A connecting assembly is installed on the circular roller (7) to connect four batteries (6) one by one in sequence. The detection component is disposed on the detection box (1) and is used to display the ion permeability inside the detection box (1).

2. The lithium-ion battery separator ion permeability detection device according to claim 1, characterized in that, The detection box (1) has a negative electrode (2) and a positive electrode (3) installed vertically at both ends, and symmetrically arranged clamping plates (5) are installed inside the detection box (1), with a diaphragm (4) clamped between the two clamping plates (5).

3. The lithium-ion battery separator ion permeability detection device according to claim 2, characterized in that, The negative electrode (2) is equipped with a first L-shaped conductor (21) for electrical connection, and the positive electrode (3) is equipped with a second L-shaped conductor (22) for electrical connection.

4. The lithium-ion battery separator ion permeability detection device according to claim 3, characterized in that, The top two ends of the test box (1) are vertically fixed with side plates (8), and the roller (7) is rotatably installed between the two side plates (8).

5. The lithium-ion battery separator ion permeability detection device according to claim 4, characterized in that, The connecting assembly includes: a second conductive plate (25), there are six second conductive plates (25), the six second conductive plates (25) are distributed in an increasing manner from zero to three around the roller (7), and the spacing between longitudinally adjacent second conductive plates (25) is the same as the spacing between batteries (6).

6. The lithium-ion battery separator ion permeability detection device according to claim 5, characterized in that, The roller (7) is also equipped with first conductive plates (24) distributed around its perimeter. The first conductive plates (24) are arranged perpendicular to the roller (7). The four first conductive plates (24) are distributed at equal intervals around the perimeter and at equal intervals along the axial direction.

7. The lithium-ion battery separator ion permeability detection device according to claim 6, characterized in that, Straight guide posts (26) are horizontally mounted on the sides of the four first conductive plates (24) away from the second conductive plate (25), and the lengths of the four straight guide posts (26) decrease sequentially from the direction where there is no second conductive plate (25).

8. The lithium-ion battery separator ion permeability detection device according to claim 7, characterized in that, The detection component includes: an L-shaped plate (10), the horizontal side of which is fixedly installed on the side of the detection box (1), a U-shaped frame (13) is slidably provided on the top of the horizontal side of the L-shaped plate (10), a spring rod (14) is vertically installed on the bottom of the horizontal side of the U-shaped frame (13), the fixed end and the telescopic end of the spring rod (14) are slidably connected by a spline, a three-grip chuck (15) is installed on the telescopic end of the spring rod (14), a paintbrush (16) is fixed on the three-grip chuck (15), and drawing paper is pasted on the inner side of the vertical side of the L-shaped plate (10), and a magnet block (17) is fixedly installed at the bottom of the three-grip chuck (15).

9. The lithium-ion battery separator ion permeability detection device according to claim 8, characterized in that, An electromagnet (18) is installed on the top of the lower horizontal side of the U-shaped frame (13). A first cable (11) and a second cable (12) are respectively installed at both ends of the electromagnet (18). The first cable (11) and the second cable (12) are respectively installed at the ends of the second L-shaped guide post (22) and the corresponding battery (6).

10. The lithium-ion battery separator ion permeability detection device according to claim 9, characterized in that, The L-shaped plate (10) has a horizontal groove (19) at the bottom of its horizontal side. A slider is slidably installed inside the groove (19). The top of the slider is fixedly installed at the bottom of the horizontal side of the U-shaped frame (13). A reciprocating screw (20) is rotatably installed inside the groove (19). The surface of the reciprocating screw (20) is connected to the inside of the slider by a thread. A shaft is rotatably installed at the end of the horizontal side of the L-shaped plate (10). The shaft is fixedly installed at the center of the end of the reciprocating screw (20) by a connecting shaft. A small pulley is fixedly installed at the end of the shaft. A large pulley is rotatably installed on the outer side of the corresponding side. The side of the large pulley is fixedly installed at the center of the end face of the round roller (7) by a connecting shaft. A belt (23) is sleeved on the surface of the small pulley and the large pulley.

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