Lithium iron phosphate raw material weighing and discharging device

By designing a lithium iron phosphate raw material weighing and feeding device, automated raw material weighing and proportioning were achieved, solving the problem of low efficiency in traditional manual operation, improving weighing efficiency and reducing errors.

CN224226009UActive Publication Date: 2026-05-12ZHEJIANG YOUSHAN NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG YOUSHAN NEW ENERGY TECHNOLOGY CO LTD
Filing Date
2025-06-16
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In the existing technology, the traditional battery raw material mixing process requires manual weighing of multiple raw materials, which is inefficient, labor-intensive, and prone to errors.

Method used

A lithium iron phosphate raw material weighing and feeding device was designed. By setting up a discharge tank, a receiving tank, a weighing structure and a control platform, the device can realize automated weighing and proportioning, reducing manual operation.

Benefits of technology

It improves weighing efficiency, reduces labor intensity, minimizes human error, and achieves automated raw material proportioning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of weighing, and particularly relates to a lithium iron phosphate raw material weighing and discharging device which comprises a discharging tank, a plurality of batching bins are installed in an inner cavity of the discharging tank, a material receiving tank is arranged below each batching bin, a discharging structure is arranged at the bottom of each material receiving tank, and the same weighing structure is arranged at the bottom of each discharging structure. A material storage part is arranged in an inner cavity of the discharging tank and is positioned below the weighing structure; according to the utility model, each raw material can be weighed through the arranged weighing structure, each raw material is discharged into the material storage part through the material discharging structure, and after the material is prepared, only the first electric valve is needed to stop blocking the discharge port of the discharge tank, so that the material can be discharged into the material storage part through the discharge structure, and the material can be discharged into the material storage part through the discharge port of the discharge tank. And each raw material does not need to be manually and personally proportioned, and the raw materials can be regulated and controlled only through a control platform.
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Description

Technical Field

[0001] This utility model belongs to the field of weighing technology, and in particular relates to a weighing and feeding device for lithium iron phosphate raw materials. Background Technology

[0002] New energy batteries are the core power source for electric vehicles, providing driving power for the entire vehicle. Compared with traditional fuel vehicles, electric vehicles do not produce exhaust emissions during operation, which can effectively reduce urban air pollution, help promote the green and low-carbon transformation of the transportation sector, and play an important role in improving environmental quality. In the battery manufacturing process, various raw materials need to be proportioned. The traditional proportioning method mainly relies on manual operation, requiring workers to weigh each raw material in turn. However, the entire proportioning process requires workers to weigh each raw material repeatedly for a long time, which is not only labor-intensive but also inefficient. Furthermore, workers are prone to fatigue under long-term operation, which can lead to errors in subsequent weighing. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] This invention addresses the problem that traditional battery raw material mixing processes require workers to weigh each material sequentially and repeatedly. This process is labor-intensive, inefficient, and prone to fatigue, leading to errors in subsequent weighings. The invention provides a lithium iron phosphate raw material weighing and feeding device.

[0005] (II) Technical Content

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lithium iron phosphate raw material weighing and feeding device includes a discharge tank, the inner cavity of which is equipped with several batching bins, each batching bin is provided with a receiving tank below it, the bottom of each receiving tank is provided with a discharge structure, and the bottom of the discharge structure is provided with the same weighing structure.

[0008] The inner cavity of the discharge tank is equipped with a material storage section, which is located below the weighing structure;

[0009] The bottom of the discharge tank has a discharge port that is connected to the storage section.

[0010] Furthermore, a central support is fixedly connected to the top of the inner cavity of the discharge tank, and multiple sets of suspended walls are fixedly connected to the inner wall of the discharge tank in a circular manner. The receiving tank is slidably connected between two suspended walls located on the same vertical horizontal line.

[0011] The top of the batching silo is fixedly connected to the discharge tank, and the bottom side wall is fixedly connected to the top of the corresponding hanging wall;

[0012] A control platform is installed on the outer wall of the discharge tank.

[0013] Furthermore, each of the multiple ingredient hoppers is equipped with an ingredient hopper outlet at its bottom, and a second electric valve is installed on the ingredient hopper outlet. The second electric valve is connected to the control platform via signal transmission.

[0014] Furthermore, limit grooves are provided on the side of the two suspended walls that are close to each other on the same vertical horizontal line. Slider blocks are symmetrically fixed to the outer wall of the receiving tank. The sliders are slidably connected in the corresponding limit grooves. A pressure sensor is installed in one of the limit grooves. The pressure sensor is located on the top of the corresponding slider.

[0015] A spring limiting rod is fixedly connected to the bottom of the slider. The bottom end of the spring limiting rod passes through the receiving tank. A return spring is sleeved on the spring limiting rod. The two ends of the return spring are fixedly connected to the top of the slider and the bottom of the limiting groove, respectively.

[0016] Furthermore, the upper and lower ends of the receiving tank are open, and the bottom of the outer wall of the receiving tank is integrally and symmetrically equipped with hydraulic supports. Each of the two hydraulic supports is equipped with a hydraulic rod, and the extension rods of the two hydraulic rods extend downward through the hydraulic supports and are fixedly connected to the same bottom plate of the receiving tank at their ends.

[0017] When the receiving tank, which is equipped with a hydraulic rod and a bottom plate, is not filled, it is in a balanced state with the reset spring, and at the same time, the top of the slider is in contact with the sensing end of the pressure sensor.

[0018] Both the hydraulic rod and the pressure sensor are connected to the control platform via signal transmission.

[0019] Furthermore, the bottom plate of the receiving tank is conical, and the inner wall of the receiving tank abuts against the outer wall of the bottom plate.

[0020] Furthermore, the outer wall of the discharge tank is integrally fixed with an outer edge, the outer edge is hollow inside and connected to the inner cavity of the discharge tank, and the weighing structure includes a support ring seat fixedly connected to the bottom of the inner cavity of the outer edge, a motor support seat is slidably connected to the top of the support ring seat, a drive motor connected to the control platform via signal transmission is installed on the motor support seat, and the output shaft of the drive motor passes through the motor support seat and is fixedly connected to a meshing gear at its end.

[0021] The outer wall of the support ring seat is fixedly connected to a meshing gear ring, and the meshing gear is slidably connected to the support ring seat and meshes with the meshing gear ring;

[0022] A sliding ring is slidably connected to the central support. The sliding ring is fixedly connected to the motor support with the same cross brace. The weighing structure also includes an electronic weighing scale that is connected to the control platform via signal transmission. Multiple first balls are slidably connected to the top of the electronic weighing scale. The first balls are in rolling contact with the bottom of the bottom plate of one of the receiving tanks.

[0023] The axes of the central support, meshing gear ring, and sliding ring are located at the same point.

[0024] Furthermore, a rolling groove is provided on the top of the support ring seat, and several second balls are slidably connected to the bottom of the motor support seat, with the second balls making rolling contact with the rolling groove.

[0025] The top of the electronic weighing scale and the bottom of the corresponding receiving tank are both electrically connected to position sensors, and the position sensors are connected to the control platform via signal transmission.

[0026] Furthermore, the control platform is fixedly mounted on the top of the outer edge.

[0027] Furthermore, a first electric valve is installed on the discharge port of the discharge tank, and the first electric valve is connected to the control platform via signal transmission.

[0028] The bottom outer wall of the central support is fixedly connected with several support rods in a circular shape. The free ends of the multiple support rods are fixedly connected to the inner wall of the discharge tank. The support rods are located below the weighing structure.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0031] I. In this utility model, each raw material can be weighed by the weighing structure and discharged into the storage section by the discharge structure. After the batching is completed, the first electric valve is used to stop the sealing of the discharge tank outlet, thereby obtaining the proportioned raw materials. There is no need for manual proportioning of each raw material; it can be controlled by the control platform.

[0032] Second, in this utility model, when the receiving tank discharges material, the extension rods of the hydraulic rods on both sides of the receiving tank extend. At this time, the corresponding bottom plate of the receiving tank stops contacting the receiving tank and gradually separates from the receiving tank as the extension rods of the hydraulic rods extend. At this time, the raw material in the receiving tank will be discharged along the gap between the receiving tank and the bottom plate of the receiving tank. The bottom plate of the receiving tank is conical so that the raw material can slide down along the conical surface of the bottom plate of the receiving tank, avoiding the accumulation of raw material on the bottom plate of the receiving tank.

[0033] Third, in this utility model, the outer wall of the receiving tank is symmetrically fixed with sliders, which are slidably connected in the corresponding limiting grooves, thereby limiting the corresponding receiving tank and preventing the receiving tank from swinging.

[0034] Fourth, in this utility model, the first ball bearing can prevent the top of the electronic weighing scale from frequently rubbing against the bottom of the receiving tank, thus avoiding damage. Attached Figure Description

[0035] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;

[0036] Figure 2 This is a partial cross-sectional view of the discharge tank in this utility model;

[0037] Figure 3 This is a schematic diagram showing the material receiving tank and its bottom plate separated in this utility model.

[0038] Figure 4 This is a partial cross-sectional view of the suspended wall in this utility model;

[0039] Figure 5 This is a schematic diagram of the weighing structure in this utility model;

[0040] Figure 6 This is a schematic diagram of the motor support and the second ball bearing in this utility model.

[0041] In the diagram: 1. Discharge tank; 101. Storage section; 102. Discharge tank outlet; 103. Outer edge; 11. Central support; 12. Suspension wall; 1201. Limiting groove; 13. Control platform; 14. Support ring seat; 1401. Rolling groove; 15. Motor support seat; 151. Second ball bearing; 16. Drive motor; 17. Meshing gear; 18. Meshing gear ring; 19. Sliding ring; 110. Cross brace; 111. First electric valve; 112. Support rod; 2. Batching bin; 201. Batching bin outlet; 21. Second electric valve; 3. Receiving tank; 31. Hydraulic support; 32. Hydraulic rod; 33. Receiving tank bottom plate; 34. Slider; 35. Spring limiting rod; 36. Return spring; 37. Pressure sensor; 4. Electronic weighing scale; 41. First ball bearing; 5. Position sensor. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Example 1

[0044] like Figures 1-6As shown, a lithium iron phosphate raw material weighing and feeding device includes a discharge tank 1, such as... Figure 1 and Figure 2 As shown, the inner cavity of the discharge tank 1 is equipped with several batching bins 2, and each batching bin 2 is provided with a receiving tank 3 below it. The bottom of the receiving tank 3 is provided with a discharge structure, and the bottom of the discharge structure is provided with the same weighing structure.

[0045] The inner cavity of the discharge tank 1 is provided with a material storage section 101, which is located below the weighing structure;

[0046] The bottom of the discharge tank 1 is provided with a discharge tank outlet 102 that is connected to the storage section 101.

[0047] Furthermore, such as Figure 2 As shown, a central support 11 is fixedly connected to the top of the inner cavity of the discharge tank 1. Multiple sets of hanging walls 12 are fixedly connected to the inner wall of the discharge tank 1 in a circular manner. The receiving tank 3 is slidably connected between two hanging walls 12 located on the same vertical horizontal line.

[0048] The top of the batching silo 2 is fixedly connected to the discharge tank 1, and the bottom sidewall is fixedly connected to the top of the corresponding hanging wall 12, providing support for the bottom of the batching silo 2; furthermore, such as Figure 3 As shown, each of the multiple batching bins 2 has a batching bin outlet 201 at its bottom. A second electric valve 21 is installed on the batching bin outlet 201, and the conduction state of the batching bin outlet 201 is controlled by the second electric valve 21.

[0049] like Figure 1 As shown, a control platform 13 is installed on the outer wall of the discharge tank 1.

[0050] Furthermore, such as Figure 3 and Figure 4 As shown, two hanging walls 12 located on the same vertical horizontal line have limit grooves 1201 on their adjacent sides. The outer wall of the receiving tank 3 is symmetrically fixed with sliders 34. The sliders 34 are slidably connected in the corresponding limit grooves 1201, thereby limiting the corresponding receiving tank 3 and preventing the receiving tank 3 from swinging. A pressure sensor 37 is installed in one of the limit grooves 1201. The pressure sensor 37 is located on the top of the corresponding slider 34.

[0051] A spring limiting rod 35 is fixedly connected to the bottom of the slider 34. The bottom end of the spring limiting rod 35 passes through the receiving tank 3. A reset spring 36 is sleeved on the spring limiting rod 35. The two ends of the reset spring 36 are fixedly connected to the top of the slider 34 and the bottom of the limiting groove 1201, respectively. The spring limiting rod 35 can prevent the reset spring 36 from bending during compression or reset.

[0052] Furthermore, such as Figure 3 As shown, the upper and lower ends of the receiving tank 3 are open. Hydraulic supports 31 are integrally and symmetrically arranged on the bottom of the outer wall of the receiving tank 3. Hydraulic rods 32 are installed on both hydraulic supports 31. The telescopic rods of the two hydraulic rods 32 extend downward through the hydraulic supports 31 and are fixedly connected to the same receiving tank bottom plate 33 at their ends. The receiving tank bottom plate 33 is conical. The inner wall of the receiving tank 3 abuts against the outer wall of the receiving tank bottom plate 33. When the receiving tank 3 with hydraulic rods 32 and receiving tank bottom plate 33 is not filled, it is in a balanced state with the return spring 36. At the same time, the top of the slider 34 is in contact with the sensing end of the pressure sensor 37.

[0053] When material needs to be discharged from receiving tank 3, the telescopic rods of hydraulic rods 32 on both sides of receiving tank 3 extend. At this time, the corresponding bottom plate 33 of receiving tank stops contacting receiving tank 3 and gradually separates from receiving tank 3 as the telescopic rods of hydraulic rods 32 extend. At this time, the raw material in receiving tank 3 will be discharged along the gap between receiving tank 3 and bottom plate 33. The bottom plate 33 of receiving tank is conical so that the raw material can slide down along the conical surface of the bottom plate 33 and avoid the raw material from accumulating on the bottom plate 33 of receiving tank.

[0054] Furthermore, such as Figure 1 and Figure 5 As shown, the outer wall of the discharge tank 1 is integrally fixed with an outer edge 103. The outer edge 103 is hollow and communicates with the inner cavity of the discharge tank 1. The weighing structure includes a support ring seat 14 fixedly connected to the bottom of the inner cavity of the outer edge 103. A motor support seat 15 is slidably connected to the top of the support ring seat 14. A drive motor 16 is installed on the motor support seat 15. The output shaft of the drive motor 16 passes through the motor support seat 15 and is fixedly connected to a meshing gear 17 at its end.

[0055] The outer wall of the support ring seat 14 is fixedly connected to a meshing gear ring 18, and the meshing gear 17 is slidably connected to the support ring seat 14 and meshes with the meshing gear ring 18.

[0056] A sliding ring 19 is slidably connected to the central support 11. The sliding ring 19 is fixedly connected to the motor support 15 by the same cross brace 110. The weighing structure also includes an electronic weighing scale 4. Multiple first balls 41 are slidably connected to the top of the electronic weighing scale 4. The first balls 41 roll in contact with the bottom of one of the receiving tank bottom plates 33. The first balls 41 can prevent the top of the electronic weighing scale 4 from frequently rubbing against the bottom of the receiving tank bottom plate 33 and causing damage.

[0057] The axes of the central support 11, the meshing gear ring 18, and the sliding ring 19 are located at the same point;

[0058] Furthermore, such as Figure 5 and Figure 6As shown, a rolling groove 1401 is provided on the top of the support ring seat 14, and a number of second balls 151 are slidably connected to the bottom of the motor support seat 15. The second balls 151 are in rolling contact with the rolling groove 1401.

[0059] Electricity Figure 3 and Figure 5 As shown, position sensors 5 are electrically connected to the top of the electronic weighing scale 4 and the bottom of the corresponding receiving tank bottom plate 33.

[0060] The drive motor 16, the second electric valve 21, the hydraulic rod 32, the pressure sensor 37, the electronic weighing scale 4, and the position sensor 5 are all connected to the control platform 13 via signal transmission, so that the staff can make unified control through the control platform 13.

[0061] Specifically, when raw material proportioning is required, the output shaft of the drive motor 16 drives the meshing gear 17 to rotate. Under the meshing action of the meshing gear 17 and the meshing gear ring 18, and with the cooperation of the sliding ring 19 and the cross brace 110, the electronic weighing scale 4 rotates around the axis of the meshing gear ring 18. As the electronic weighing scale 4 moves, the first ball 41 on the top of the electronic weighing scale 4 will contact the bottom of one of the receiving tank bottom plates 33. As the electronic weighing scale 4 moves, when the position sensor 5 on the electronic weighing scale 4 coincides with the position sensor 5 at the bottom of the receiving tank bottom plate 33, the receiving tank bottom plate 33 is located directly above the electronic weighing scale 4, and the drive motor 16 stops working. When the receiving tank bottom plate 33 moves directly above the electronic weighing scale 4, the electronic weighing scale 4 performs a zeroing adjustment.

[0062] At this time, the raw materials in the batching bin 2 above the receiving tank 3 are discharged into the receiving tank 3 under the action of the second electric valve 21. At this time, the weight of the receiving tank 3 increases, and the electronic weighing scale 4 starts to weigh. After the set weight is reached, the second electric valve 21 blocks the batching bin outlet 201 of the batching bin 2. At the same time, the drive motor 16, which was stopped, is turned on again to move the electronic weighing scale 4 to the bottom of the next receiving tank bottom plate 33 for the next weighing operation.

[0063] After the electronic weighing scale 4 separates from the weighed receiving tank 3, the corresponding receiving tank 3 will move down along the limit slide 1201 due to its weight, and the return spring 36 will be compressed. When the electronic weighing scale 4 starts weighing the next receiving tank 3, the control platform 13 controls the extension rods of the hydraulic rods 32 on both sides of the previously weighed receiving tank 3 to extend. At this time, the bottom plate 33 of the corresponding receiving tank stops contacting the receiving tank 3 and gradually separates from the receiving tank 3 as the extension rods of the hydraulic rods 32 extend. The raw material in the receiving tank 3 will flow along the space between the receiving tank 3 and the bottom plate 33. The material is discharged into the storage section 101 for temporary storage. As the material in the receiving tank 3 is gradually discharged, the weight of the receiving tank 3 will gradually decrease. At the same time, the return spring 36, which is in a compressed state, will push the receiving tank 3 to move upward along the limit slide groove 1201 to reset. After the material is discharged, the receiving tank 3 is also reset. At the same time, the top of the slider 34 contacts the sensing end of the pressure sensor 37. At this time, the pressure sensor 37 sends an electrical signal to the corresponding hydraulic rod 32 through the control platform 13, so that the corresponding hydraulic rod 32 retracts its extension rod and resets the bottom plate 33 of the corresponding receiving tank.

[0064] Furthermore, the control platform 13 is fixedly mounted on the top of the outer edge 103 for easy use by staff.

[0065] Furthermore, a first electric valve 111 is installed on the discharge tank outlet 102. The first electric valve 111 is connected to the control platform 13 via signal transmission. When the batching is completed, the first electric valve 111 is controlled to stop blocking the discharge tank outlet 102, thereby obtaining the proportioned raw materials.

[0066] The bottom outer wall of the central support 11 is fixedly connected with several support rods 112 in a circular shape. The free ends of the multiple support rods 112 are fixedly connected to the inner wall of the discharge tank 1. The bottom of the central support 11 can be supported by the support rods 112. The support rods 112 are located below the weighing structure to avoid the electronic weighing scale 4 from interfering with the support rods 112 when it moves.

[0067] However, as is well known to those skilled in the art, the working principles and wiring methods of the control platform 13, drive motor 16, first electric valve 111, second electric valve 21, hydraulic rod 32, pressure sensor 37, electronic weighing scale 4, and position sensor 5 are commonplace and belong to conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0068] The different embodiments described above can be combined, substituted, or used in combination with each other.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weighing and feeding device for lithium iron phosphate raw materials, characterized in that: Includes a discharge tank (1), the inner cavity of which is equipped with several batching bins (2), each batching bin (2) is provided with a receiving tank (3) below it, and the bottom of each receiving tank (3) is provided with a discharge structure, and the bottom of the discharge structure is provided with the same weighing structure; The inner cavity of the discharge tank (1) is provided with a storage section (101), which is located below the weighing structure; The bottom of the discharge tank (1) is provided with a discharge tank outlet (102) that is connected to the storage section (101).

2. The lithium iron phosphate raw material weighing and feeding device according to claim 1, characterized in that: The top of the inner cavity of the discharge tank (1) is fixedly connected to a central support (11), and the central support (11) and the inner wall of the discharge tank (1) are fixedly connected in a circular manner to multiple sets of hanging walls (12). The receiving tank (3) is slidably connected between two hanging walls (12) located on the same vertical horizontal line. The top of the batching silo (2) is fixedly connected to the discharge tank (1), and the bottom side wall is fixedly connected to the top of the corresponding hanging wall (12); The control platform (13) is installed on the outer wall of the discharge tank (1).

3. The lithium iron phosphate raw material weighing and feeding device according to claim 2, characterized in that: Each of the multiple ingredient bins (2) is provided with an ingredient bin outlet (201) at its bottom. A second electric valve (21) is installed on the ingredient bin outlet (201). The second electric valve (21) is connected to the control platform (13) via signal transmission.

4. The lithium iron phosphate raw material weighing and feeding device according to claim 2, characterized in that: Two suspended walls (12) located on the same vertical horizontal line are provided with limit grooves (1201) on their adjacent sides. The outer wall of the receiving tank (3) is symmetrically fixed with sliders (34). The sliders (34) are slidably connected in the corresponding limit grooves (1201). A pressure sensor (37) is installed in one of the limit grooves (1201). The pressure sensor (37) is located at the top of the corresponding slider (34). A spring limiting rod (35) is fixedly connected to the bottom of the slider (34). The bottom end of the spring limiting rod (35) passes through the receiving tank (3). A reset spring (36) is sleeved on the spring limiting rod (35). The two ends of the reset spring (36) are fixedly connected to the top of the slider (34) and the bottom of the limiting groove (1201), respectively.

5. The lithium iron phosphate raw material weighing and feeding device according to claim 4, characterized in that: The upper and lower ends of the receiving tank (3) are open. The bottom of the outer wall of the receiving tank (3) is integrally and symmetrically provided with hydraulic supports (31). Hydraulic rods (32) are installed on both hydraulic supports (31). The telescopic rods of the two hydraulic rods (32) extend downward through the hydraulic supports (31) and are fixedly connected to the same receiving tank bottom plate (33) at their ends. When the receiving tank (3), which is equipped with hydraulic rod (32) and receiving tank bottom plate (33), is not loaded, it is in a balanced state with the reset spring (36), and at the same time, the top of the slider (34) is in contact with the sensing end of the pressure sensor (37). The hydraulic rod (32) and pressure sensor (37) are both connected to the control platform (13) via signal transmission.

6. The lithium iron phosphate raw material weighing and feeding device according to claim 5, characterized in that: The bottom plate (33) of the receiving tank is conical, and the inner wall of the receiving tank (3) abuts against the outer wall of the bottom plate (33).

7. The lithium iron phosphate raw material weighing and feeding device according to claim 5, characterized in that: The outer wall of the discharge tank (1) is integrally fixed with an outer edge (103). The outer edge (103) is hollow inside and communicates with the inner cavity of the discharge tank (1). The weighing structure includes a support ring seat (14) fixedly connected to the bottom of the inner cavity of the outer edge (103). The top of the support ring seat (14) is slidably connected to a motor support seat (15). A drive motor (16) connected to the control platform (13) in a signal transmission manner is installed on the motor support seat (15). The output shaft of the drive motor (16) passes through the motor support seat (15) and is fixedly connected to a meshing gear (17) at its end. The outer wall of the support ring seat (14) is fixedly connected to a meshing gear ring (18), and the meshing gear (17) is slidably connected to the support ring seat (14) and meshes with the meshing gear ring (18); A sliding ring (19) is slidably connected to the central support (11). The sliding ring (19) and the motor support (15) are fixedly connected by the same cross brace (110). The weighing structure also includes an electronic weighing scale (4) that is connected to the control platform (13) via signal transmission. A plurality of first balls (41) are slidably connected to the top of the electronic weighing scale (4). The first balls (41) are in rolling contact with the bottom of one of the receiving tank bottom plates (33). The axes of the central support (11), the meshing gear ring (18), and the sliding ring (19) are located at the same point.

8. The lithium iron phosphate raw material weighing and feeding device according to claim 7, characterized in that: The top of the support ring seat (14) is provided with a rolling groove (1401), and the bottom of the motor support seat (15) is slidably connected with a number of second balls (151), and the second balls (151) are in rolling contact with the rolling groove (1401). The top of the electronic weighing scale (4) and the bottom of the corresponding receiving tank bottom plate (33) are electrically connected to position sensors (5), and the position sensors (5) are connected to the control platform (13) for signal transmission.

9. The lithium iron phosphate raw material weighing and feeding device according to claim 7, characterized in that: The control platform (13) is fixedly installed on the top of the outer edge (103).

10. The lithium iron phosphate raw material weighing and feeding device according to claim 2, characterized in that: A first electric valve (111) is installed on the discharge port (102) of the discharge tank, and the first electric valve (111) is connected to the control platform (13) via signal transmission. The bottom outer wall of the central support (11) is fixedly connected with several support rods (112) in a circular shape. The free ends of the multiple support rods (112) are fixedly connected to the inner wall of the discharge tank (1). The support rods (112) are located below the weighing structure.