Weight measuring device for pole roll of winding machine

Abstract

The utility model discloses a winding machine pole roll weight measuring device which is used for obtaining the weight of a positive pole piece and a negative pole piece in a single roll core and comprises an air expansion shaft, a pole roll, a force measuring assembly and a power assembly used for driving the air expansion shaft to rotate, the pole roll is wound on the periphery of the air expansion shaft, and the force measuring assembly is arranged between the output end of the power assembly and the air expansion shaft. The force measuring assembly is used for measuring the weight of the pole roll, the force measuring assembly is a rotary dynamometer, the power assembly comprises a power shaft and a motor, one end of the power shaft is connected to one end of the inflatable shaft, the other end of the power shaft is connected to the output end of the motor, and the rotary dynamometer is arranged at the joint of the power shaft and the inflatable shaft; the pole roll weight measuring device indirectly obtains the weight of the positive and negative pole pieces in a single roll core, and provides data support for evaluating the capacity grading discharge capacity of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, in particular to a pole roll weight measuring device for a winding machine. Background Art

[0002] In the production process of lithium batteries, the winding machine is one of the main equipment for producing battery cells. Measuring the weight of the positive and negative electrode coils during the winding process can indirectly obtain the weight of the positive and negative electrode sheets of each battery cell, which is of great significance for evaluating the capacity of the battery.

[0003] During the winding process, the positive and negative electrode sheets are continuously fed. After the equipment detects the fixed cutting position, the electrode sheets will be cut into a single core. At this time, the positive and negative electrode sheets and the separator are wound together. Only the weight of the entire core can be obtained, and it is difficult to obtain the weight of the positive and negative electrode sheets in a single core. Utility Model Content

[0004] Based on the technical problems existing in the background technology, the utility model proposes a pole roll weight measuring device for a winding machine, which indirectly obtains the weight of the positive and negative pole sheets in a single winding core, and provides data support for evaluating the divided capacity discharge capacity of the battery.

[0005] The utility model proposes a pole roll weight measuring device for a winding machine, which is used to obtain the weight of the positive and negative pole sheets in a single winding core, and includes an air shaft, a pole roll, a force measuring component and a power component for driving the air shaft to rotate. The pole roll is wound around the outer periphery of the air shaft, and the force measuring component is arranged between the output end of the power component and the air shaft to measure the weight of the pole roll.

[0006] Furthermore, a pole winding drum is arranged on the outer periphery of the inflatable shaft, and the pole winding is wound around the outer periphery of the pole winding drum.

[0007] Furthermore, the force measuring assembly is a rotary dynamometer.

[0008] Furthermore, the power assembly includes a power shaft and a motor, one end of the power shaft is connected to one end of the inflatable shaft, and the other end is connected to the output end of the motor, and a rotary dynamometer is arranged at the connection between the power shaft and the inflatable shaft.

[0009] Furthermore, it also includes a motor controller for controlling the working state of the motor.

[0010] Furthermore, it also includes a collector and a processor. The collector is electrically connected to the rotary dynamometer and the motor controller respectively. The collector inputs the collected data into the processor to analyze the weight of the pole roll.

[0011] The advantage of the pole roll weighing device for a winding machine provided by the utility model is that the pole roll weighing device for a winding machine provided in the utility model structure measures the weight of the pole roll during the production of the winding machine through a force measuring component, thereby indirectly obtaining the weight of the positive and negative electrode sheets in a single winding core, providing data support for evaluating the divided capacity discharge capacity of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Among them, 1-inflatable shaft, 2-pole roll, 3-force measuring component, 4-power component, 5-pole roll drum, 41-power shaft. DETAILED DESCRIPTION

[0014] Below, the technical solution of the utility model is described in detail through specific embodiments. Many specific details are described in the following description to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation disclosed below.

[0015] like Figure 1 As shown, the utility model proposes a winding machine pole roll weight measuring device, which is used to obtain the weight of the positive and negative pole sheets in a single winding core, including an inflatable shaft 1, a pole roll 2, a force measuring component 3 and a power component 4 for driving the inflatable shaft 1 to rotate, the pole roll 2 is arranged on the outer periphery of the inflatable shaft 1, and the force measuring component 3 is arranged between the output end of the power component 4 and the inflatable shaft 1, and is used to measure the weight of the pole roll 2.

[0016] The pole roll 2 is wound around the outer periphery of the inflatable shaft 1 through the pole roll drum 5. The rotation of the inflatable shaft 1 drives the pole roll 2 to rotate, thereby realizing the winding operation of the pole piece. In this embodiment, the force measuring component 3 is used to measure the weight of the pole roll 2 during the production of the winding machine, thereby indirectly obtaining the weight of the positive and negative pole pieces in a single winding core, providing data support for evaluating the divided capacity discharge capacity of the battery.

[0017] The force measuring assembly 3 of this embodiment adopts a rotary dynamometer, and the force between the output end of the power assembly 4 and the air shaft 1 is indirectly established through the force measuring assembly 3, thereby providing a force basis for the weight measurement of the pole coil 2.

[0018] The power assembly 4 of this embodiment includes a power shaft 41 and a motor. One end of the power shaft 41 is connected to one end of the inflatable shaft 1, and the other end is connected to the output end of the motor. The rotary dynamometer is arranged at the connection between the power shaft 41 and the inflatable shaft 1. The power shaft 41 is driven to rotate by the motor, thereby driving the inflatable shaft 1 to rotate, and then the pole roll 2 is wound accordingly.

[0019] The power shaft 41 and the inflatable shaft 1 may be connected via a coupling, which is a commonly used connection method by those skilled in the art and will not be described in detail in this embodiment.

[0020] In this embodiment, the motor controller is provided to control the working state of the motor, and the motor controller is used to control the output of the motor, thereby obtaining the speed of the power shaft 41 accelerating from a stationary state for a certain period of time. The speed can be achieved not only by setting the control parameters of the motor controller, but also by setting a tachometer on the power shaft 41 to obtain the speed of the power shaft 41.

[0021] In this embodiment, a collector and a processor are provided. The collector is used to obtain the measurement results of the rotary dynamometer and the control parameters of the motor controller. The processor is used to process the data collected by the collector to analyze the weight of the pole roll 2 .

[0022] The specific analysis process of the weight of the pole roll 2 in the processor is as follows: the motor controller outputs instructions to the motor, so that the power shaft 41 accelerates from the speed V0 at the stationary state t0 to the speed V1 at time t1, and the value of the rotary dynamometer during the acceleration process is F1; the power shaft 41 accelerates from the speed V2 at the stationary state t2 to the speed V3 at t3, and the value of the rotary dynamometer during the acceleration process is F2; ​​and so on, the power shaft 41 accelerates from the stationary state t n Speed ​​V n Accelerate to t n+1 Speed ​​V n+1 , the value of the rotary dynamometer during acceleration is F n .

[0023] It is known that the weight of the inflatable shaft 1 is m1, the weight of the rotary dynamometer is m2, the weight of the pole roll drum 5 is m3, and the weight of the pole roll 2 to be obtained is m; based on the above parameters, the processor calculates the weight of the pole roll 2 by the following formula:

[0024]

[0025] This embodiment measures the weight of the pole coil at regular intervals without affecting the winding production, providing data support for evaluating the differentiated discharge capacity of the battery.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A winding machine pole roll weight measuring device, used to obtain the weight of the positive and negative pole sheets in a single winding core, characterized in that: The invention comprises an inflatable shaft (1), a pole roll (2), a force measuring assembly (3), and a power assembly (4) for driving the inflatable shaft (1) to rotate; the pole roll (2) is wound around the outer periphery of the inflatable shaft (1); the force measuring assembly (3) is arranged between the output end of the power assembly (4) and the inflatable shaft (1) and is used to indirectly obtain the weight of the pole roll (2).

2. The winding machine pole roll weight measuring device according to claim 1, characterized in that: A pole winding drum (5) is arranged on the outer periphery of the inflatable shaft (1), and the pole winding (2) is wound around the outer periphery of the pole winding drum (5).

3. The winding machine pole roll weight measuring device according to claim 1, characterized in that: The force measuring component (3) is a rotary force measuring instrument.

4. The winding machine pole roll weight measuring device according to claim 3, characterized in that: The power assembly (4) comprises a power shaft (41) and a motor, one end of the power shaft (41) is connected to one end of the inflatable shaft (1), and the other end is connected to the output end of the motor, and a rotary dynamometer is arranged at the connection between the power shaft (41) and the inflatable shaft (1).

5. The winding machine pole roll weight measuring device according to claim 4, characterized in that: A motor controller is also included for controlling the working state of the motor.

6. The winding machine pole roll weight measuring device according to claim 5, characterized in that: It also includes a collector and a processor. The collector is electrically connected to the rotary dynamometer and the motor controller respectively. The collector inputs the collected data into the processor to analyze the weight of the pole roll (2).

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