A device for measuring the flexibility of a battery electrode sheet

Abstract

The utility model provides a kind of device for measuring battery pole piece flexibility, including signal receiving processing mechanism, base, pedestal, range finder, fixed base, driving mechanism and press plate;Pedestal is horizontally arranged above base;Pedestal top surface transverse arrangement guide rail, fixed base is located on the guiding path of guide rail one end, its side towards guide rail is sequentially connected with pressure sensor and fixed plate;Press plate is slidably connected on guide rail, and parallel to fixed plate;Driving mechanism is connected on pedestal, and is connected with press plate, for driving press plate along guide rail sliding to make it close to or away from fixed plate;Range finder is located on the side of guide rail, for real-time measurement the moving distance of press plate;Signal receiving processing mechanism is used to receive and process the measurement value of pressure sensor and range finder.The device of the application, when measuring, only needs to clamp the cut battery pole piece to be measured on press plate and fixed base respectively, easy to operate, accurate measurement.

Description

Technical Field

[0001] This utility model relates to the technical field of battery electrode performance testing devices, and more specifically, to a device for measuring the flexibility of battery electrodes. Background Technology

[0002] Battery electrodes are a crucial component of batteries, and their flexibility is paramount, directly impacting product quality. Currently, devices for measuring battery electrode flexibility, such as the battery electrode flexibility characterization method and flexibility testing device disclosed in patent CN201210111542.7, require the electrode to be rolled into a single-layer cylindrical surface during measurement. This process is cumbersome, and the orientation of the seam on the cylindrical surface can affect the accuracy of the measurement data.

[0003] In view of this, the applicant hereby submits this application after studying the existing technology. Utility Model Content

[0004] This invention provides a device for measuring the flexibility of battery electrodes, aiming to improve at least one of the aforementioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a device for measuring the flexibility of battery electrode sheets, including a signal receiving and processing mechanism, a base, a base, a ranging mechanism, a fixing seat, a driving mechanism, and a pressure plate;

[0006] The base is provided with a first mounting part and a second mounting part;

[0007] The base has a guide rail on its top surface and a first connecting part and a second connecting part on its bottom. The first connecting part and the second connecting part are respectively connected to the first mounting part and the second mounting part, so that the base can be arranged horizontally above the base.

[0008] The fixing base is connected to one end of the base and is located on the guide path of the guide rail. A pressure sensor and a fixing plate are connected in sequence on the side facing the guide rail.

[0009] The pressure plate is slidably connected to the guide rail and parallel to the fixed plate. The two ends of the battery electrode to be tested can be clamped on the pressure plate and the fixed plate respectively.

[0010] The drive mechanism is connected to the base and to the pressure plate, and is used to drive the pressure plate to slide along the guide rail to move closer to or away from the fixed plate.

[0011] The ranging mechanism is located on one side of the guide rail and is used to measure the moving distance of the pressure plate in real time.

[0012] The signal receiving and processing mechanism is used to receive and process the measurement values ​​of the pressure sensor and the ranging mechanism.

[0013] As a further optimization, the first mounting part and the first connecting part are detachably connected by a knob bolt.

[0014] As a further optimization, the second mounting part and the second connecting part are hinged by a flip axis, and after the first mounting part and the first connecting part are disassembled, the base can be flipped around the flip axis.

[0015] As a further optimization, the base has a receiving groove at one end near the fixed seat, which can accommodate the fixed seat when the base is flipped to a vertical plane.

[0016] As a further optimization, the base is provided with a third mounting part, which can be detachably connected to the base via a knob bolt when the base is flipped to a vertical plane.

[0017] As a further optimization, an offline clamping mechanism is also included, which includes two clamping plates arranged opposite each other. The side of the two clamping plates that is close to each other is provided with clamping pieces for clamping the battery electrode sheet to be tested, and the side that is far away from each other can be connected to the fixing plate and the pressure plate respectively.

[0018] As a further optimization, the offline clamping mechanism also includes a positioning plate, and the top of the two clamping plates is provided with a positioning groove that matches the positioning plate.

[0019] As a further optimization, the drive mechanism includes a motor and a rotary screw, the pressure plate is connected to the rotary screw, and the motor can drive the rotary screw to rotate, thereby causing the pressure plate to slide along the guide rail.

[0020] As a further optimization, the ranging mechanism is a grating ruler, a magnetic grating ruler, or a laser rangefinder.

[0021] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0022] This application discloses a device for measuring the flexibility of battery electrode sheets. A base is horizontally arranged above a subbase, with a guide rail and a fixed seat on the base. A pressure sensor and a fixed plate are connected to the fixed seat. A pressure plate is slidably connected to the guide rail. A distance measuring mechanism is located on one side of the guide rail to measure the displacement distance of the pressure plate. During measurement, one end of the cut battery electrode sheet to be tested is fixed to the fixed plate, and the other end is fixed to the pressure plate. A drive mechanism then drives the pressure plate at a constant speed to move along the guide rail towards the fixed plate, thus applying horizontal pressure to the battery electrode sheet. A data receiving and processing mechanism receives and processes the measurement values ​​from the pressure sensor and the distance measuring mechanism to determine the flexibility of the electrode sheet. This device eliminates the need to first roll the battery electrode sheet into a cylindrical shape, making operation simple, convenient, and accurate. In a further design, the base can be flipped, allowing the device to perform both horizontal and vertical pressure testing scenarios, meeting the testing requirements of personnel for both horizontal and vertical pressure applications on the electrode sheet. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 This is a front view of the second embodiment of the present utility model;

[0026] Figure 3 This is a structural schematic diagram of two embodiments of the present invention from a second perspective;

[0027] Figure 4 This is a schematic diagram of the structure of the base of the device for measuring the flexibility of battery electrodes after it has been flipped to a vertical plane.

[0028] Figure 5 This is a schematic diagram of the offline clamping mechanism;

[0029] In the diagram, the markings are: 1-base; 11-first mounting part; 12-second mounting part; 13-flipping shaft; 14-accommodating groove; 15-third mounting part; 2-base; 21-first connecting part; 22-second connecting part; 23-guide rail; 24-knob bolt; 3-fixed seat; 31-high-precision pressure sensor; 32-fixed plate; 4-distance measuring mechanism; 5-pressure plate; 6-motor; 61-rotating screw; 7-battery electrode to be tested; 8-offline clamping mechanism; 81-clamping plate; 82-clamping piece; 83-positioning plate; 84-positioning groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Example 1

[0032] Depend on Figure 1 , Figure 2 As shown in the figure, this utility model embodiment provides a device for measuring the flexibility of battery electrode sheets, including a signal receiving and processing mechanism (not shown), a base 1, a base 2, a ranging mechanism 4, a fixing seat 3, a driving mechanism, and a pressure plate 5; the base 1 is provided with a support foot 16 at the bottom and a first mounting part 11 and a second mounting part 12 on the top surface; the base 2 is provided with a first connecting part 21 and a second connecting part 22 at the bottom, and the first connecting part 21 and the second connecting part 22 are respectively connected to the first mounting part 11 and the second mounting part 12, so that the base 2 can be arranged horizontally above the base 1;

[0033] A guide rail 23 is horizontally arranged on the top surface of the base 2. A fixed base 3 is connected to one end of the base 2 and is located on the guide path of the guide rail 23. A high-precision pressure sensor 31 and a fixed plate 32 are sequentially connected to the side facing the guide rail 23. A pressure plate 5 is slidably connected to the guide rail 23 and is parallel to the fixed plate 32. A slot can be set on the top of the side of the pressure plate 5 and the fixed plate 32 that are close to each other for clamping the battery electrode to be tested. Other clamping structures can also be used to clamp the electrode. The driving mechanism includes a motor 6 and a rotating screw 61. The motor 6 is connected to the base 2 and is connected to the pressure plate 5 through the rotating screw 61, so that the motor 6 can drive the rotating screw 61 to rotate, thereby driving the pressure plate 5 to slide along the guide rail 23 closer to or away from the fixed plate 32. A ranging mechanism 4 is located on one side of the guide rail 23 and is used to measure the moving distance of the pressure plate 5 in real time. A signal receiving and processing mechanism is used to receive and process the measurement values ​​of the high-precision pressure sensor 31 and the ranging mechanism 4. Among them, the ranging mechanism 4 can be a ranging device such as a grating ruler, a magnetic grating ruler, or a laser rangefinder.

[0034] In this embodiment, during measurement, the distance between the pressure plate 5 and the fixing plate 32 is first adjusted. Then, one end of the cut battery electrode 7 to be tested is clamped on the fixing plate 32, and the other end is clamped on the pressure plate 5. The motor 6 is turned on, and the motor 6 drives the pressure plate 5 towards the fixing plate 32 at a constant speed through the rotating screw 61, so that the pressure plate 5 applies a horizontal pressure to the battery electrode 7 to be tested. The battery electrode 7 bends under the force, and the high-precision pressure sensor 31 senses the force value of the battery electrode 7 to be tested. The distance measuring mechanism 4 measures the displacement distance of the pressure plate 5 in real time. Both transmit the measured pressure value and displacement distance value to the signal receiving and processing mechanism, respectively. The signal receiving and processing mechanism receives the measurement data and processes and calculates it, thereby measuring the flexibility of the battery electrode 7 to be tested. This device is simple and convenient to operate and provides accurate measurements.

[0035] Reference Figure 2 , Figure 3 , Figure 4 As shown, the first mounting part 11 and the first connecting part 21 are detachably connected by a knob bolt 24, and the second mounting part 12 and the second connecting part 22 are hinged by a flip shaft 13; the base 1 has a receiving groove 14 at one end near the fixed seat 3. When it is necessary to apply vertical pressure to the battery electrode 7 under test, the first mounting part 11 and the first connecting part 21 are removed by rotating the knob bolt 24, and the base 2 is pulled upward to rotate it 90° around the flip shaft 13. After the base 2 is rotated to the vertical plane, the fixed seat 3 can be placed in the receiving groove 14.

[0036] Furthermore, a third mounting part 15 is provided on the base 1. The third mounting part 15 can be detachably connected to the base 2 via a knob bolt 24 when the base 2 is flipped to the vertical plane, thereby fixing the flipped base 2.

[0037] Example 2

[0038] Reference Figure 3 and Figure 5 As shown, this application can also provide an offline clamping mechanism 8 for clamping the electrode to be tested. The offline clamping mechanism 8 includes two clamping plates 81 arranged opposite to each other. The side of the two clamping plates 81 that is close to each other is provided with clamping pieces 82 for clamping the electrode to be tested. The side that is far away can be connected to the pressure plate 5 and the fixing plate 32 respectively. During measurement, the two ends of the battery electrode 7 to be tested are first clamped on the two clamping plates 81 by the clamping pieces 82 respectively. Then the back sides of the two clamping plates 81 are fixed on the fixing plate 32 and the pressure plate 5 respectively. The clamping plates 81 and the fixing plate 32 and the pressure plate 5 can be fixed with bolts. The offline clamping mechanism 8 can make the clamping more stable.

[0039] Furthermore, the offline clamping mechanism 8 also includes a positioning plate 83. The top of the two clamping plates 81 is provided with positioning grooves 84 that are adapted to the positioning plate 83. After the battery electrode 7 to be tested is clamped between the two clamping plates 81, the positioning plate 83 is inserted into the positioning groove 84 for positioning. At the same time, it can prevent the two clamping plates 81 from shifting during movement and installation. After the two pressure plates 81 are fixed on the fixing plate 32 and the pressure plate 5 respectively, the positioning plate 83 is removed.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for measuring the flexibility of battery electrodes, characterized in that: It includes a signal receiving and processing mechanism, a base, a base, a ranging mechanism, a fixed base, a drive mechanism, and a pressure plate; The base is provided with a first mounting part and a second mounting part; The base has a guide rail on its top surface and a first connecting part and a second connecting part on its bottom. The first connecting part and the second connecting part are respectively connected to the first mounting part and the second mounting part, so that the base can be arranged horizontally above the base. The fixing base is connected to one end of the base and is located on the guide path of the guide rail. A pressure sensor and a fixing plate are connected in sequence on the side facing the guide rail. The pressure plate is slidably connected to the guide rail and parallel to the fixed plate. The two ends of the battery electrode to be tested can be clamped on the pressure plate and the fixed plate respectively. The drive mechanism is connected to the base and to the pressure plate, and is used to drive the pressure plate to slide along the guide rail to move closer to or away from the fixed plate. The ranging mechanism is located on one side of the guide rail and is used to measure the moving distance of the pressure plate in real time. The signal receiving and processing mechanism is used to receive and process the measurement values ​​of the pressure sensor and the ranging mechanism; It also includes an offline clamping mechanism, which includes two clamping plates arranged opposite each other. The side of the two clamping plates that is close to each other is provided with clamping pieces for clamping the battery electrode sheet to be tested, and the side that is far away from each other can be connected to the fixing plate and the pressure plate respectively. The offline clamping mechanism also includes a positioning plate, and the top of the two clamping plates is provided with a positioning groove that is adapted to the positioning plate.

2. The device for measuring the flexibility of battery electrodes according to claim 1, characterized in that... The first mounting part and the first connecting part are detachably connected by a knob bolt.

3. The device for measuring the flexibility of battery electrodes according to claim 2, characterized in that... The second mounting part and the second connecting part are hinged by a flip axis. After the first mounting part and the first connecting part are disassembled, the base can be flipped around the flip axis.

4. The device for measuring the flexibility of battery electrodes according to claim 3, characterized in that... The base has a receiving groove at one end near the fixed seat, which can accommodate the fixed seat when the base is flipped to a vertical plane.

5. The device for measuring the flexibility of battery electrodes according to claim 4, characterized in that... The base is provided with a third mounting part, which can be detachably connected to the base by a knob bolt when the base is flipped to a vertical plane.

6. The device for measuring the flexibility of battery electrodes according to claim 1, characterized in that... The driving mechanism includes a motor and a rotating lead screw. The pressure plate is connected to the rotating lead screw. The motor can drive the rotating lead screw to rotate, thereby causing the pressure plate to slide along the guide rail.

7. The device for measuring the flexibility of battery electrodes according to claim 1, characterized in that... The ranging mechanism is an optical grating ruler, a magnetic grating ruler, or a laser rangefinder.

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