A lithium battery positive electrode material weighing detection device

Abstract

The present invention relates to the field of measurement technology, and specifically to a lithium battery positive electrode material weighing detection device. The solution of the present application enables the material to be continuously and automatically transported to the weighing position through the conveyor belt of the conveying mechanism. The application of the electromagnetic suction block enables the weighing bin to be firmly positioned in the placement slot without manual intervention, thus reducing labor costs and errors caused by human operation. The detachable design of the weighing bin makes it easy to replace and maintain. The device lifts the weighing bin upward through the lifting mechanism so that it contacts the weighing sensor, ensuring that the weighing process is not affected by the vibration of the conveyor belt, thereby improving the accuracy and stability of the weighing. This design can effectively reduce environmental interference and ensure the reliability of the measurement data.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a lithium battery positive electrode material weighing detection device. Background Art

[0002] With the widespread application of lithium batteries in various fields, precise control of each link in its production process is particularly important. The performance of lithium batteries depends largely on the precise ratio of their constituent materials, among which the weight of the positive electrode material directly affects the energy density and stability of the battery. Therefore, in the production process, accurate weighing and quality control of lithium battery positive electrode materials are key steps to ensure battery performance.

[0003] Traditional weighing methods rely on manual operation or simple automated equipment, which may have problems such as low efficiency, insufficient precision, and complex operation. In addition, production lines usually need to process a large amount of positive electrode materials. Frequent manual intervention not only increases labor costs, but may also lead to human errors and affect product quality. Therefore, it is of great practical significance to develop an efficient, accurate and easy-to-integrate automated weighing and detection device that can achieve rapid detection and real-time monitoring on the production line.

[0004] At present, there is a lack of devices on the market that can automatically weigh lithium battery positive electrode materials during transportation. Existing technologies often cannot balance weighing accuracy and production efficiency, and it is difficult to meet the needs of modern lithium battery production lines. Therefore, there is an urgent need for an innovative technical solution that can achieve automatic material transportation and weighing detection while maintaining high accuracy, so as to improve production efficiency and ensure the consistency and reliability of product quality. Summary of the invention

[0005] In order to solve the above problems, the present invention discloses a lithium battery positive electrode material weighing detection device.

[0006] In order to achieve the above-mentioned purpose, the present application discloses a lithium battery positive electrode material weighing detection device, comprising:

[0007] The conveying mechanism has a conveyor belt for feeding materials, and a plurality of placement slots are provided on the conveyor belt; a weighing bin is detachably provided in the placement slot, and the outer side surface of the bottom of the weighing bin contracts inward to form an inclined surface, and there are limit plates on both sides of the weighing bin, and the weighing bin is supported in the placement slot through the limit plates;

[0008] A plurality of electromagnetic suction blocks are evenly distributed along the length direction of the conveying belts below the two sides of the conveying mechanism, which are used to adsorb and fix the limit plates of the symmetrical heavy warehouses;

[0009] A lifting mechanism is provided in the conveying mechanism, and a weighing sensor is provided above the lifting mechanism for lifting the weighing bin upwards to weigh it;

[0010] The controller is electrically connected to the signal output terminal of the weighing sensor and is used to calculate and output weight data.

[0011] Furthermore, the weighing detection device also includes a feeding component, the outlet end of the feeding component is correspondingly arranged above the weighing bin, and the outlet end of the feeding component has a V-shaped outlet, and the controller is electrically connected to the feeding component for controlling the feeding speed of the feeding component.

[0012] In a possible embodiment, an identification module is provided at the bottom of each weighing bin, and an identification module cooperating with the identification module is provided above the lifting mechanism. The controller is electrically connected to the identification module for receiving identification data from the identification module to obtain corresponding weighing bin identification information.

[0013] At least two weighing sensors and two identification modules are arranged above the lifting mechanism. The two weighing sensors and the two identification modules are arranged at intervals and matched with two adjacent weighing bins on the conveyor belt, so as to respectively obtain the first weight data of the weighing bin in an empty bin state and the second weight data of the weighing bin in a storage state. The controller calculates and outputs the net weight of the positive electrode material of the lithium battery according to the second weight data and the first weight data.

[0014] The controller is electrically connected to the electromagnetic suction block, and when the identification module identifies that there is a corresponding weighing bin, the electromagnetic suction block is closed to release the weighing bin.

[0015] In the above solution, the top weighing part of the weighing sensor is provided with a positioning groove having the same cross-sectional shape as the bottom of the weighing bin.

[0016] The cross-sectional shape of the positioning groove is V-shaped or rectangular.

[0017] In addition, the controller further includes a gravity acceleration module, a tilt sensor and a calibration module, wherein the gravity acceleration module is used to obtain the precise geographic location of the device and calculate the local theoretical gravity acceleration value based on the gravity field data;

[0018] The tilt sensor and the weighing sensor are located in the same plane and are used to measure the tilt angle thereof;

[0019] The calibration module is used to perform corresponding vector decomposition of gravity acceleration according to the tilt angle information, compare the corrected gravity acceleration value with the standard gravity acceleration, and calculate the correction coefficient; then apply the correction coefficient to the weighing result in real time to convert the mass under local gravity into the mass under standard gravity.

[0020] The correction coefficient is determined according to the following formula:

[0021] C = (G / L) * cos(A) * [1 + F(B) - F(B0)];

[0022] Where G is the standard gravity acceleration; L is the local theoretical gravity acceleration value; A is the tilt angle of the measuring device; B is the current latitude of the device; B0 is the reference latitude;

[0023] F(B) = K * (sin²(B) - 1 / 3), K is the constant of the theoretical gravity model;

[0024] Multiply the measured mass m by the calibration factor C to obtain the corrected mass M.

[0025] The solution of the present application enables the material to be continuously and automatically transported to the weighing position through the conveyor belt of the conveying mechanism. The application of electromagnetic suction blocks enables the weighing bin to be firmly positioned in the placement slot without manual intervention, reducing labor costs and errors caused by human operation. The detachable design of the weighing bin makes it easy to replace and maintain. The device lifts the weighing bin upward through the lifting mechanism so that it contacts the weighing sensor, ensuring that the weighing process is not affected by the vibration of the conveyor belt, thereby improving the accuracy and stability of the weighing. This design can effectively reduce environmental interference and ensure the reliability of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the lithium battery positive electrode material weighing detection device in the embodiment of the present application;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure of the weighing detection device after the conveyor belt is removed;

[0028] Figure 3 This is a schematic diagram of the internal structure of the conveying mechanism in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the positions of the lifting mechanism and the weighing sensor in the embodiment of the present application;

[0030] Figure 5 It is a structural schematic diagram of the weighing bin in the embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The principles and features of the present invention are described below in conjunction with the drawings. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] The terms "including" and other expressions with similar meanings in the specification or claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions, such as a process, method or system, or device comprising a series of steps or units is not limited to the listed steps or units.

[0033] Example 1: Figure 1-3 As shown, a lithium battery positive electrode material weighing detection device specifically comprises:

[0034] The conveying mechanism 100 has a conveyor belt 101 for feeding materials. The conveyor belt 101 is provided with a plurality of placement slots 102. The placement slots 102 are detachably provided with weighing bins 103. Figure 5 As shown, the outer side of the bottom of the weighing bin 103 contracts inward to form an inclined surface 104, and there are limit plates 105 on both sides of the weighing bin 103, and the weighing bin 103 is supported in the placement groove 102 through the limit plates 105;

[0035] A plurality of electromagnetic suction blocks 106 are evenly distributed along the length direction of the conveying mechanism 100 below the corresponding conveyor belt 101 on both sides thereof, and are used to adsorb and fix the limit plates 105 of the symmetrical heavy bin 103;

[0036] The weighing bin 103 is located in the placement slot 102, which forms a preliminary limit for it; at the same time, multiple electromagnetic suction blocks 106 are evenly distributed along the length direction of the conveyor belt 101, which can further adsorb and fix the limit plates 105 on both sides of the weighing bin 103 to ensure the stability of the weighing bin 103 during transportation and prevent shaking and displacement. By controlling the switch of the electromagnetic suction block 106, the weighing bin 103 can be accurately positioned and released; at the same time, the weighing bin 103 is detachable for easy cleaning and maintenance.

[0037] The conveying mechanism 100 is provided with a lifting mechanism 107, and a weighing sensor 108 is provided above the lifting mechanism 107 for lifting the weighing bin 103 upwards to weigh it; the lifting mechanism 107 can specifically adopt a pneumatic cylinder lifting mechanism, an electric screw lifting mechanism, a gear rack lifting mechanism or a scissors-type lifting mechanism.

[0038] like Figure 3 As shown, during weighing, the lifting mechanism 107 lifts upward to separate the weighing bin 103 from the conveyor belt 101 to eliminate the influence of the conveyor belt vibration on the weighing accuracy. When the lifting mechanism 107 pushes the weighing bin 103 upward, due to the design of the inclined surface 104, the outer side of the bottom of the weighing bin 103 is gradually reduced from top to bottom, which can reduce the friction between the weighing bin 103 and the placement slot 102 during the rising process, so that the weighing bin 103 can be more smoothly separated from the placement slot 102, reducing the possibility of jamming.

[0039] The controller 109 is electrically connected to the signal output terminal of the weighing sensor 108 and is used to calculate and output weight data.

[0040] In the initial state, the weighing bin 103 is placed in the placement slot 102 , and the lifting mechanism 107 is in a descending state; during weighing, the lithium battery positive electrode material to be weighed is loaded into the weighing bin 103 .

[0041] The lifting mechanism 107 starts to move upward, and the weighing sensor 108 above the lifting mechanism 107 pushes the weighing bin 103 to gradually separate from the placement slot 102 upward; the weighing bin 103 completely separates from the placement slot 102, and the weight of the weighing bin 103 is now completely supported by the weighing sensor 108 above the lifting mechanism 107; the weighing sensor 108 and the controller 109 start to measure the total weight of the weighing bin 103 and its contents. After weighing is completed, the lifting mechanism 107 starts to descend, and the weighing bin 103 gradually returns to the placement slot 102.

[0042] The conveying mechanism 100 conveys the weighing bin 103 that has been weighed to the next station, and at the same time, the weighing bin 103 at the next position moves to the top of the lifting mechanism 107 to prepare for the next weighing.

[0043] The lifting mechanism 107 and the weighing sensor 108 are integrated in the conveying mechanism 100, so that online weighing can be realized without stopping the conveyor belt 101, which is beneficial to improving production efficiency.

[0044] In a specific implementation scheme, the weighing detection device also includes a feeding component 110, the outlet end of the feeding component 110 is correspondingly arranged above the weighing bin 103, and the outlet end of the feeding component 110 has a V-shaped outlet 111, and the controller 109 is electrically connected to the feeding component 110 for controlling the feeding speed of the feeding component 110.

[0045] Specifically, the main body of the feeding component 110 can be a funnel-shaped or cylindrical container, which may be equipped with a screw conveyor or a vibrating feeder inside. The discharge end is provided with a V-shaped discharge port 111, which is V-shaped and may be composed of two inclined metal plates. The controller 109 controls the running speed of the feeding component 110 through a frequency converter or a stepper motor, and multiple preset speed modes can be set: fast, medium, slow and fine-tuning speed. The design of the V-shaped discharge port 111 helps the material to fall steadily and reduce splashing and dust generation. In addition, a photoelectric sensor may be installed at the V-shaped discharge port 111 to detect the flow state of the material; the real-time data of the weighing sensor 108 is fed back to the controller 109 for dynamically adjusting the feeding speed. The controller 109 integrates feeding and weighing data to facilitate production management and quality control.

[0046] like Figure 4 As shown, the top weighing part of the weighing sensor 108 is provided with a positioning groove 112 that is consistent with the cross-sectional shape of the bottom of the weighing bin 103. The positioning groove 112 is consistent with the bottom shape of the weighing bin 103, and the two can better match when in contact, reducing the shaking or deviation of the weighing bin 103 on the weighing sensor 108, thereby improving the accuracy of weighing. Specifically, the cross-sectional shape of the positioning groove 112 is V-shaped or rectangular. The V-shaped or rectangular positioning groove design can adapt to weighing bins with different bottom shapes. Among them, the V-shaped design is particularly conducive to automatic centering, and even if the weighing bin 103 is slightly offset, it will naturally slide into the correct position.

[0047] Example 2: Figure 3-4 As shown, an identification module 113 is provided at the bottom of each weighing bin 103, and an identification module 114 cooperating with the identification module 113 is provided above the lifting mechanism 107. The controller 109 is electrically connected to the identification module 114 for receiving identification data from the identification module 114 to obtain corresponding weighing bin identification information.

[0048] Specifically, each weighing bin 103 has a unique identification module 113 at the bottom, which can be an RFID tag, a barcode or a QR code. The identification module 114 (such as an RFID reader or scanner) can read these identifications. The cooperation of the identification module 113 and the identification module 114 can realize the accurate identification and tracking of the weighing bin 103, facilitate the recording of the use history, cleaning cycle and other information of each weighing bin 103, and contribute to quality control and production management.

[0049] At least two weighing sensors 108 and two identification modules 114 are arranged above the lifting mechanism 107. The two weighing sensors 108 and the two identification modules 114 are arranged at intervals and aligned with two adjacent weighing bins 103 on the conveyor belt 101, so as to respectively obtain the first weight data of the weighing bin 103 in an empty bin state and the second weight data of the weighing bin 103 in a material storage state. The controller 109 calculates and outputs the net weight of the positive electrode material of the lithium battery according to the second weight data and the first weight data.

[0050] The two weighing sensors 108 and the two identification modules 114 correspond to two adjacent weighing bins 103, one for measuring the empty bin weight and the other for measuring the loaded weight. After each weighing and unloading of the weighing bin 103, the weight may change due to the adhesion of materials inside. Therefore, by measuring the empty bin weight and the full bin weight each time, the net weight of the material can be calculated more accurately.

[0051] The controller 109 is electrically connected to the electromagnetic suction block 106. When the identification module 114 identifies the existence of the corresponding weighing bin 103, the electromagnetic suction block 106 is turned off and the weighing bin 103 is released. The controller 109 not only receives weight data, but also receives identification information, and controls the switch of the electromagnetic suction block 106. The weighing parameters can be automatically adjusted or the data can be recorded according to the identification information. When the identification module 114 detects the weighing bin 103, the controller 109 automatically turns off the electromagnetic suction block 106. The precise positioning and release of the weighing bin 103 are achieved. Manual operations are reduced and the level of automation is improved.

[0052] During operation, two adjacent weighing bins 103 on the conveyor belt 101 are moved to the top of the lifting mechanism 107 in sequence and aligned with the two weighing sensors 108;

[0053] The identification module 114 reads the identification module 113 at the bottom of the weighing bin 103, obtains the identification information, and sends the identification data to the controller 109;

[0054] When the controller 109 identifies the weighing bin 103, it turns off the electromagnetic suction block 106 at the corresponding position to release the two weighing bins 103;

[0055] The lifting mechanism 107 synchronously lifts the weighing sensor 108 to the top of the empty weighing bin 103 and the weighing bin 103 to be tested; and simultaneously measures the weight of the empty bin and the weight of the bin filled with materials (first weight data and second weight data), and sends the measured data to the controller 109;

[0056] After the measurement is completed, the empty weighing bin 103 is moved to the feeding position to be filled with material, and the weight data is obtained by weighing it again, and then the weight data obtained previously is subtracted to calculate the net weight of the material.

[0057] Embodiment 3: In addition, the controller further includes a gravity acceleration module, a tilt sensor and a calibration module, wherein the gravity acceleration module is used to obtain the precise geographic location of the device and calculate the local theoretical gravity acceleration value based on the gravity field data;

[0058] The gravity acceleration module is used to obtain the precise geographic location of the device and calculate the local theoretical gravity acceleration value (L) using the gravity field data. Since gravity acceleration varies with geographic location, it is crucial to obtain the local value.

[0059] The tilt sensor and the weighing sensor are located in the same plane and are used to measure their tilt angles. The tilt of the weighing sensor will affect the measurement result, so the tilt angle needs to be monitored in real time.

[0060] The calibration module is used to perform corresponding vector decomposition of gravity acceleration according to the tilt angle information, compare the corrected gravity acceleration value with the standard gravity acceleration, and calculate the correction coefficient; then apply the correction coefficient to the weighing result in real time to convert the mass under local gravity into the mass under standard gravity.

[0061] The correction coefficient is determined according to the following formula:

[0062] C = (G / L) * cos(A) * [1 + F(B) - F(B0)];

[0063] Where G is the standard gravity acceleration; L is the local theoretical gravity acceleration value; A is the tilt angle of the measuring device; B is the current latitude of the device; B0 is the reference latitude;

[0064] F(B) = K * (sin²(B) - 1 / 3), K is the constant of the theoretical gravity model;

[0065] Multiply the measured mass m by the calibration factor C to obtain the corrected mass M.

[0066] In this embodiment, the correction coefficient (C) is calculated by a formula, and its purpose is to convert the weighing results from local gravity conditions to standard gravity conditions.

[0067] Among them, the variables in the formula: G is usually 9.81 m / s²; B0: is the commonly used standard latitude; F(B): is a correction function related to latitude; K: theoretical gravity model constant, the theoretical gravity model constant (usually represented by K, K0.001) is an important parameter used to calculate the local gravitational acceleration in geophysics and gravity research.

[0068] Among them, the theoretical gravity acceleration calculation formula is: L=G(1+αsin2(B)-βsin2(2B))

[0069] L: local theoretical gravitational acceleration value;

[0070] G: standard gravitational acceleration, usually 9.80665 m / s2;

[0071] B: local latitude;

[0072] α, β: Constants related to the shape and rotation of the Earth, usually determined by empirical formulas. For example, the internationally recognized values ​​are α=0.0053024 and β=0.0000058.

[0073] Calculation steps:

[0074] 1. Get latitude: determine the current latitude B of the device;

[0075] 2. Apply the formula: Substitute the latitude into the formula to calculate L. This calculation method takes into account the effects of the flattening and rotation of the earth, which makes the gravitational acceleration different with latitude.

[0076] Finally, the measured mass (m) is multiplied by the correction factor (C) to obtain the corrected mass (M). This ensures the consistency and accuracy of the weighing results under different geographical and tilt conditions. The calculation of F(B) depends on K, which can be used to derive the gravity correction at a specific latitude B. This correction can help scientists understand and predict changes in the gravity field more accurately.

[0077] For example, it is assumed that the current measurement conditions are as follows:

[0078] Standard gravity G = 9.81 m / s²; Local theoretical gravity L = 9.78 m / s²; Tilt angle of measuring device A = 10°; Current latitude B = 30°

[0079] Reference Latitude B 0 = 45°; Theoretical gravity model constant K = 0.001931851;

[0080] Calculation steps:

[0081] Calculate F(B) and F(B 0 ):

[0082] F(B) = K × (sin²(B) - 1 / 3)

[0083] Calculate F(B):

[0084] sin(30°) = 0.5, so sin²(30°) = 0.25

[0085] F(B) = 0.001931851 × (0.25 - 0.3333) ≈ 0.001931851 × (-0.0833) ≈-0.000161

[0086] F(B 0 ) = K × (sin²(B 0 ) - 1 / 3)

[0087] Calculate F(B 0 ):

[0088] sin(45°) ≈ 0.707, so sin²(45°) ≈ 0.5

[0089] F(B 0 ) = 0.001931851 × (0.5 - 0.3333) ≈ 0.001931851 × 0.1667 ≈ 0.000322

[0090] Calculate the correction factor C:

[0091] C = (G / L) × cos(A) × [1 + F(B) - F(B 0 )]

[0092] Calculate C:

[0093] cos(10°) ≈ 0.9848

[0094] 1 + F(B) - F(B 0 ) ≈ 1 - 0.000161 - 0.000322 ≈ 0.999517

[0095] C ≈ (9.81 / 9.78) × 0.9848 × 0.999517 ≈ 1.0029 × 0.9848 ×0.999517 ≈ 0.9864

[0096] Calculate the corrected mass M:

[0097] Assume the measured mass m = 1000g:

[0098] Then, M = m × C = 100 × 0.9864 ≈ 986.4 g

[0099] By applying the theoretical gravity model constant K and the related correction function F(B), the gravitational acceleration is accurately calculated. By monitoring the tilt angle in real time and correcting the gravitational acceleration, the measurement results can be adjusted dynamically, improving the flexibility and accuracy of weighing. This method is significantly superior to traditional static calibration techniques.

[0100] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A lithium battery positive electrode material weighing detection device, characterized in that: include: The conveying mechanism has a conveyor belt for feeding materials, and a plurality of placement slots are provided on the conveyor belt; a weighing bin is detachably provided in the placement slot, and the outer side surface of the bottom of the weighing bin contracts inward to form an inclined surface, and there are limit plates on both sides of the weighing bin, and the weighing bin is supported in the placement slot through the limit plates; A plurality of electromagnetic suction blocks are evenly distributed along the length direction of the conveying belts below the two sides of the conveying mechanism, which are used to adsorb and fix the limit plates of the symmetrical heavy warehouses; A lifting mechanism is provided in the conveying mechanism, and a weighing sensor is provided above the lifting mechanism for lifting the weighing bin upwards to weigh it; The controller is electrically connected to the signal output terminal of the weighing sensor and is used to calculate and output weight data.

2. The lithium battery positive electrode material weighing detection device according to claim 1, characterized in that: The weighing detection device also includes a feeding component, the outlet end of the feeding component is correspondingly arranged above the weighing bin, and the outlet end of the feeding component has a V-shaped outlet. The controller is electrically connected to the feeding component for controlling the feeding speed of the feeding component.

3. The lithium battery positive electrode material weighing detection device according to claim 1, characterized in that: An identification module is provided at the bottom of each weighing bin, and an identification module cooperating with the identification module is provided above the lifting mechanism. The controller is electrically connected to the identification module for receiving identification data from the identification module to obtain corresponding weighing bin identification information.

4. The lithium battery positive electrode material weighing detection device according to claim 3, characterized in that: At least two weighing sensors and two identification modules are arranged above the lifting mechanism. The two weighing sensors and the two identification modules are arranged at intervals and matched with two adjacent weighing bins on the conveyor belt, so as to respectively obtain the first weight data of the weighing bin in an empty bin state and the second weight data of the weighing bin in a storage state. The controller calculates and outputs the net weight of the positive electrode material of the lithium battery according to the second weight data and the first weight data.

5. The lithium battery positive electrode material weighing detection device according to claim 3 or 4, characterized in that: The controller is electrically connected to the electromagnetic suction block, and when the identification module identifies that there is a corresponding weighing bin, the electromagnetic suction block is closed to release the weighing bin.

6. The lithium battery positive electrode material weighing detection device according to claim 1, characterized in that: The top weighing part of the weighing sensor is provided with a positioning groove having the same cross-sectional shape as the bottom of the weighing bin.

7. The lithium battery positive electrode material weighing detection device according to claim 6, characterized in that: The cross-sectional shape of the positioning groove is V-shaped or rectangular.

8. The lithium battery positive electrode material weighing detection device according to claim 1, characterized in that: The controller further includes a gravity acceleration module, a tilt sensor and a calibration module, wherein the gravity acceleration module is used to obtain the precise geographic location of the device and calculate the local theoretical gravity acceleration value based on the gravity field data; The tilt sensor and the weighing sensor are located in the same plane and are used to measure the tilt angle thereof; The calibration module is used to perform corresponding vector decomposition of gravity acceleration according to the tilt angle information, compare the corrected gravity acceleration value with the standard gravity acceleration, and calculate the correction coefficient; The correction factor is then applied to the weighing result in real time to convert the mass under local gravity to the mass under standard gravity.

9. The lithium battery positive electrode material weighing detection device according to claim 8, characterized in that: The correction coefficient is determined according to the following formula: C = (G / L) * cos(A) * [1 + F(B) - F(B0)]; Where G is the standard gravity acceleration; L is the local theoretical gravity acceleration value; A is the tilt angle of the measuring device; B is the current latitude of the device; B0 is the reference latitude; F(B) = K * (sin²(B) - 1 / 3), K is the constant of the theoretical gravity model; Multiply the measured mass m by the calibration factor C to obtain the corrected mass M.

Images