Sodium ion battery charging and discharging testing device

Abstract

The invention belongs to the technical field of batteries, and discloses a sodium ion battery charging and discharging testing device which comprises a testing cylinder, a PLC is installed on the outer wall of the testing cylinder, and multiple layers of annular rotating platforms distributed up and down are connected into the testing cylinder at equal intervals through rotating driving assemblies. A plurality of fixing and clamping assemblies used for fixing and clamping a battery to be tested are arranged on the peripheral edge of each layer of annular rotating platform at equal intervals, and test material inlets and test material outlets corresponding to the multiple layers of annular rotating platforms one to one are symmetrically formed in the test barrel. According to the invention, multiple layers of annular rotating platforms are arranged in the testing cylinder, multiple to-be-tested batteries can be carried on each layer of annular rotating platform for synchronous testing, the testing cylinder is compact in structure, multi-station testing can be realized, the space utilization rate and high-throughput parallel testing are improved, the testing efficiency of the batteries is improved, and the testing efficiency of the batteries is improved. And the polarity of the battery is automatically matched through the arranged self-adaptive electrode contact module, so that manual misoperation is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a sodium ion battery charging and discharging test device. BACKGROUND

[0002] The sodium ion battery is a kind of secondary battery (rechargeable battery), mainly relying on sodium ions to move between the positive electrode and the negative electrode to work, and has the advantages of low price and rich resources. Compared with the ternary positive electrode material of the lithium ion battery, the raw material cost of the sodium ion battery is equivalent to that of the original battery, and the cost can be reduced by half. After the sodium ion battery is produced and processed, the finished product needs to be charged and discharged to ensure that the quality of the sodium ion battery meets the standard.

[0003] The sodium ion battery has the advantages of low cost and rich resources, and becomes an important supplement of the lithium ion battery. In the mass production process, the battery needs to be charged and discharged for cycle test to verify its capacity, service life and safety. The existing test device has the following defects: a single fixed test station is generally used, high-throughput parallel test cannot be realized, the test efficiency is low, manual feeding and discharging are needed, the electrode contact needs to be manually adjusted, poor contact or damage to the battery is easily caused, the degree of automation is insufficient, and the test efficiency of the sodium ion battery is indirectly affected. The existing technology (such as application No. CN202410458584.0) adopts a horizontal transmission belt cooperating with a linear pushing assembly, the battery needs to pass through a single test station in sequence, the efficiency is limited and is easily affected by mechanical vibration. SUMMARY

[0004] In order to overcome the technical defects of the prior art, the application provides a sodium ion battery charging and discharging test device.

[0005] The technical solution adopted by the application is as follows: a sodium ion battery charging and discharging test device, which comprises a test cylinder body, a PLC controller is installed on the outer wall of the test cylinder body, a plurality of fixed clamping assemblies for fixing and clamping the battery to be tested are equidistantly arranged on the periphery edge of each annular rotating platform connected by a rotating drive assembly and distributed in layers, a plurality of inlet and outlet test material ports corresponding to the plurality of annular rotating platforms are symmetrically arranged on the test cylinder body, a plurality of battery test machines are installed on the outer wall of the test cylinder body and located on the two sides of the symmetrically arranged two rows of inlet and outlet test material ports, and a self-adaptive electrode contact module electrically connected with the battery test machine is arranged on the inner wall of the test cylinder body; the device further comprises an inlet and outlet material conveying mechanism for conveying the battery to be tested to the fixed clamping assembly of the annular rotating platform through the inlet and outlet test material port, the inlet and outlet material conveying mechanism comprises an inlet conveying assembly and an outlet conveying assembly, a horizontal conveying assembly for horizontally conveying the battery to be tested and a battery transfer assembly for conveying the battery to be tested on the horizontal conveying assembly to the fixed clamping assembly through the inlet and outlet test material port are arranged between the inlet conveying assembly and the outlet conveying assembly.

[0006] Preferably, the rotating driving assembly comprises a rotating shaft arranged in the middle of the test cylinder body, and a plurality of annular rotating platforms are fixedly sleeved on the rotating shaft; the top end of the test cylinder body is provided with a U-shaped support, and the top end of the support is provided with a DD direct drive motor for driving the rotating shaft to rotate; the DD direct drive motor is provided with a rotary encoder for feeding back the rotating angle of the shaft of the DD direct drive motor in real time.

[0007] Preferably, the fixed clamping assembly comprises an arc-shaped fixed clamping plate arranged at the peripheral edge of the annular rotating platform; the top end of the annular rotating platform is provided with a first telescopic cylinder corresponding to the arc-shaped fixed clamping plate; the output shaft of the first telescopic cylinder is connected with an arc-shaped movable clamping plate matched with the arc-shaped fixed clamping plate.

[0008] Preferably, the arc-shaped movable clamping plate is internally provided with a limiting support plate which is arc-shaped and supports the battery to be tested; the bottom end of the arc-shaped fixed clamping plate is provided with a test inlet; the bottom end of the arc-shaped movable clamping plate is provided with a T-shaped guide sliding block; the top end edge of the annular rotating platform is provided with a guide sliding groove matched with the guide sliding block for sliding.

[0009] Preferably, the self-adaptive electrode contact module comprises a first electrode contact assembly abutting against the first electrode of the battery to be tested and a second electrode contact assembly abutting against the second electrode; the first electrode contact assembly comprises a second telescopic cylinder mounted on the inner wall of the test cylinder body and facing the battery to be tested; the output shaft of the second telescopic cylinder is connected with an elastic conductive sheet which extends into the test inlet and contacts the first electrode of the battery to be tested.

[0010] Preferably, the second electrode contact assembly comprises an annular mounting plate arranged on the inner wall of the test cylinder body; the bottom end inner edge of the annular mounting plate is provided with a third telescopic cylinder vertically downward; the output shaft of the third telescopic cylinder is connected with a sleeve; the inside of the sleeve is provided with a reset spring; the bottom of the sleeve is provided with a telescopic connecting rod connected with the reset spring; the bottom end of the telescopic connecting rod is provided with a conductive block contacting the second electrode.

[0011] Preferably, the feeding conveying assembly comprises a feeding conveying support arranged near the test material inlet and outlet; the feeding conveying support is provided with a plurality of groups of feeding protection plates corresponding to a plurality of test material inlets and outlets on the same side; each group of feeding protection plates is provided with two feeding protection plates, and a feeding conveyor belt is arranged between the two feeding protection plates.

[0012] The discharging conveying assembly comprises a discharging conveying support arranged near the test material inlet and outlet; the discharging conveying support is provided with a plurality of groups of discharging protection plates corresponding to a plurality of test material inlets and outlets on the same side; each group of discharging protection plates is provided with two discharging protection plates, and a discharging conveyor belt is arranged between the two discharging protection plates.

[0013] The horizontal conveying assembly includes a horizontal conveying plate arranged between the feeding conveying support and the discharging conveying support, the bottom end of the horizontal conveying plate is embedded with an electric guide rail, a slider of the electric guide rail is provided with a fourth telescopic cylinder vertically downward, and the output shaft of the fourth telescopic cylinder is provided with a first electric clamp.

[0014] The battery transfer assembly includes a horizontal mounting plate arranged between the feeding conveying support and the discharging conveying support, the horizontal mounting plate is provided with a fifth telescopic cylinder facing the feeding and discharging test opening, and the output shaft of the fifth telescopic cylinder is connected with a second electric clamp.

[0015] The beneficial effects of the present application are: by arranging a plurality of annular rotating platforms in the interior of the test cylinder body, a plurality of batteries to be tested can be carried on each annular rotating platform for synchronous testing, the test cylinder body structure is compact, multi-station testing can be realized, the space utilization rate is improved, high-throughput parallel testing is realized, and the battery testing efficiency is improved, the self-adaptive electrode contact module is arranged, the battery polarity is automatically matched, manual misoperation is avoided, the feeding and discharging conveying mechanism including the feeding conveying assembly, the discharging conveying assembly, the horizontal conveying assembly and the battery transfer assembly can convey the battery to be tested, convey the battery to be tested to the annular rotating platform, after the test is completed, the tested battery can also be conveyed out and placed on the discharging conveying assembly for conveying out, the battery to be tested can be automatically conveyed, and the battery testing efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only, and not for the purposes of limitation of the embodiments, elements having the same reference numbers in the drawings represent similar elements, unless otherwise specifically noted, the drawings in the drawings do not constitute a proportional limit.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a sectional view of the connection structure of the test cylinder and the rotating drive assembly of the present application;

[0019] Figure 3 It is a top view of the annular rotating platform of the present application;

[0020] Figure 4 It is a schematic diagram of the feeding and discharging conveying mechanism structure of the present application;

[0021] Figure 5 It is a sectional view of the horizontal conveying assembly structure of the present application;

[0022] Figure 6 It is a schematic diagram of the battery transfer assembly structure of the present application;

[0023] Figure 7 For the purposes of the present invention, Figure 2 Enlarged structural sectional view at A in Fig.

[0024] Reference signs: In the figures: 1, test cylinder; 2, rotary drive assembly; 201, rotary shaft; 202, U-shaped support; 203, DD direct drive motor; 204, rotary encoder; 3, annular rotary platform; 4, fixed clamping assembly; 401, arc-shaped fixed clamping plate; 402, first telescopic cylinder; 403, arc-shaped movable clamping plate; 404, limiting support plate; 405, test inlet; 406, guide sliding block; 407, guide sliding groove; 5, inlet and outlet test material port; 6, battery testing machine; 7, self-adaptive electrode contact module; 701, first electrode contact assembly; 7011, second telescopic cylinder; 7012, elastic conductive sheet; 702, second electrode contact assembly; 7021, annular mounting plate; 7022, third telescopic cylinder; 7023, sleeve; 7024, return spring; 7025, telescopic connecting rod; 7026, conductive block; 8, inlet and outlet material conveying mechanism; 801, inlet conveying assembly; 8011, inlet conveying support; 8012, inlet protection plate; 8013, inlet conveyor belt; 802, outlet conveying assembly; 8021, outlet conveying support; 8022, outlet protection plate; 8023, outlet conveyor belt; 803, horizontal conveying assembly; 8031, horizontal conveying plate; 8032, electric guide rail; 8033, fourth telescopic cylinder; 8034, first electric clamp; 804, battery transfer assembly; 8041, horizontal mounting plate; 8042, fifth telescopic cylinder; 8043, second electric clamp. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present application clearer, the various embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that, in the various embodiments of the present application, many technical details are presented in order to make the reader better understand the present application. However, the technical solutions claimed by the various claims of the present application can be implemented even without these technical details and based on various changes and modifications of the following various embodiments.

[0026] As Figure 1 , Figure 2 and Figure 4As shown, the embodiment provides a sodium ion battery charge-discharge testing device, which comprises a test cylinder 1, the outer wall of the test cylinder 1 is provided with a PLC controller (not shown in the figure), the inside of the test cylinder 1 is connected with a plurality of layers of annular rotating platforms 3 distributed upwards and downwards through a rotating drive assembly 2, a plurality of fixed clamping assemblies 4 for clamping the battery to be tested are equidistantly arranged at the periphery edge of each layer of annular rotating platforms 3, a plurality of test inlet and outlet ports 5 corresponding to the plurality of layers of annular rotating platforms 3 are symmetrically arranged on the test cylinder 1, a plurality of battery testers 6 are arranged on the outer wall of the test cylinder 1 and located on both sides of the two rows of test inlet and outlet ports 5, and a self-adaptive electrode contact module 7 electrically connected with the battery tester 6 is arranged on the inner wall of the test cylinder 1; further comprising an inlet and outlet conveying mechanism 8 for conveying the battery to be tested to the fixed clamping assembly 4 of the annular rotating platform 3 through the test inlet and outlet port 5, the inlet and outlet conveying mechanism 8 comprises an inlet conveying assembly 801 and an outlet conveying assembly 802, a horizontal conveying assembly 803 for horizontally conveying the battery to be tested and a battery transfer assembly 804 for conveying the battery to be tested on the horizontal conveying assembly 803 to the fixed clamping assembly 4 through the test inlet and outlet port 5 are arranged between the inlet conveying assembly 801 and the outlet conveying assembly 802, through the plurality of layers of annular rotating platforms 3 and the symmetrically arranged test inlet and outlet ports 5, the space is utilized in three dimensions, the space utilization rate of the test is improved, the self-adaptive electrode contact module 7 automatically matches the polarity of the battery, the manual misoperation is avoided, and the test efficiency is improved, the inlet and outlet conveying mechanism 8 is fully automated, the manual intervention is reduced, and the battery test efficiency is further improved.

[0027] Specifically, as shown in the figure, Figure 2 The rotating drive assembly 2 comprises a rotating shaft 201 arranged in the middle of the test cylinder 1, the plurality of layers of annular rotating platforms 3 are fixedly sleeved on the rotating shaft 201, a U-shaped support 202 is arranged at the top end of the test cylinder 1, a DD direct drive motor 203 for driving the rotating shaft 201 to rotate is arranged at the top end of the support 202, a rotary encoder 204 for feeding back the rotation angle of the DD direct drive motor 203 in real time is arranged on the DD direct drive motor 203, the output shaft of the DD direct drive motor 203 drives the rotating shaft 201 to rotate, the rotating shaft 201 drives the plurality of layers of annular rotating platforms 3 to rotate, high-precision angle control is provided, the positioning of the plurality of layers of annular rotating platforms 3 is accurate, the electrode contact failure caused by the displacement of the battery is avoided, two charge-discharge stations and a static station located between the two charge-discharge stations are arranged between the two test inlet and outlet ports 5 on the same side and at the same height, the static station makes the ion concentration on the electrode surface balanced, and ensures the accuracy of the subsequent test data.

[0028] Specifically, as shown in the figure, Figure 3 and Figure 7As shown, the fixed clamping assembly 4 comprises an arc-shaped fixed clamping plate 401 arranged at the peripheral edge of the annular rotating platform 3, a first telescopic cylinder 402 corresponding to the arc-shaped fixed clamping plate 401 is mounted at the top end of the annular rotating platform 3, an arc-shaped movable clamping plate 403 matched with the arc-shaped fixed clamping plate 401 is connected to the output shaft of the first telescopic cylinder 402, the arc-shaped movable clamping plate 403 is internally provided with an arc-shaped limiting support plate 404 for limiting and supporting the battery to be tested, the bottom end of the arc-shaped fixed clamping plate 401 is provided with a test inlet 405, the bottom end of the arc-shaped movable clamping plate 403 is provided with a T-shaped guide sliding block 406, the top end edge of the annular rotating platform 3 is provided with a guide sliding groove 407 matched with the guide sliding block 406 for sliding, after the battery to be tested is placed on the limiting support plate 404 inside the arc-shaped movable clamping plate 403, the output shaft of the first telescopic cylinder 402 drives the arc-shaped movable clamping plate 403 to move towards the arc-shaped fixed clamping plate 401, so as to complete the fixed clamping of the battery to be tested, the arc-shaped fixed clamping plate 401 and the arc-shaped movable clamping plate 403 are adapted to the curved surface of the battery, the clamping force is uniformly distributed, the T-shaped guide sliding block 406 and the guide sliding groove 407 are matched, so that the stability of the movement of the arc-shaped movable clamping plate 403 is improved, the clamping deviation is prevented, and the center of the battery is ensured to be aligned with the electrode contact point.

[0029] Specifically, as shown in Figure 2 and Figure 7 The adaptive electrode contact module 7 comprises a first electrode contact assembly 701 abutting against the first electrode of the battery to be tested and a second electrode contact assembly 702 abutting against the second electrode; the first electrode contact assembly 701 comprises a second telescopic cylinder 7011 mounted on the inner wall of the test cylinder 1 and facing the battery to be tested, an elastic conductive sheet 7012 connected to the output shaft of the second telescopic cylinder 7011 and extending into the test inlet 405 and contacting the first electrode of the battery to be tested, when the first electrode of the battery to be tested contacts the elastic conductive sheet 7012, the output shaft of the second telescopic cylinder 7011 drives the elastic conductive sheet 7012 to extend into the test inlet 405 and makes the elastic conductive sheet 7012 contact the first electrode of the battery to be tested.

[0030] The second electrode contact assembly 702 comprises an annular mounting plate 7021 arranged on the inner wall of the test barrel 1, a third telescopic cylinder 7022 is arranged on the bottom end inner edge of the annular mounting plate 7021 and vertically downward, the output shaft of the third telescopic cylinder 7022 is connected with a sleeve 7023, the inside of the sleeve 7023 is provided with a reset spring 7024, the bottom of the sleeve 7023 is provided with a telescopic connecting rod 7025 connected with the reset spring 7024, the bottom end of the telescopic connecting rod 7025 is provided with a conductive block 7026 in contact with the second electrode, when the second electrode of the battery to be tested is in contact with the conductive block 7026, the output shaft of the third telescopic cylinder 7022 drives the sleeve 7023 to move, so that the telescopic connecting rod 7025 and the conductive block 7026 move downward until the conductive block 7026 is in contact with the second electrode of the battery to be tested, and the reset spring 7024 is compressed, which can ensure the contact stability of the conductive block 7026 and the second electrode of the battery to be tested, and can be suitable for testing batteries of different size specifications, buffer electrode contact impact force, prevent battery deformation or electrode damage, and the independent driving design of the first electrode and the second electrode improves the contact reliability.

[0031] Specifically, as Figure 4 , Figure 5 and Figure 6As shown, the feeding conveying assembly 801 includes a feeding conveying support 8011 arranged near the access test material port 5, and a plurality of feeding protection plates 8012 corresponding to the plurality of access test material ports 5 on the same side are arranged on the feeding conveying support 8011, each group of feeding protection plates 8012 includes two feeding protection plates 8012, and a feeding conveying belt 8013 is arranged between the two feeding protection plates 8012, and the outer surface of the feeding conveying belt 8013 is provided with a positioning groove for positioning the battery to be tested, preventing the battery from toppling over, ensuring the vertical conveying of the battery, facilitating the clamping of the battery to be tested by the first electric clamp 8034, the discharging conveying assembly 802 includes a discharging conveying support 8021 arranged near the access test material port 5, and a plurality of discharging protection plates 8022 corresponding to the plurality of access test material ports 5 on the same side are arranged on the discharging conveying support 8021, each group of discharging protection plates 8022 includes two discharging protection plates 8022, and a discharging conveying belt 8023 is arranged between the two discharging protection plates 8022, the horizontal conveying assembly 803 includes a horizontal conveying plate 8031 arranged between the feeding conveying support 8011 and the discharging conveying support 8021, and an electric guide rail 8032 is embedded at the bottom end of the horizontal conveying plate 8031, a slide block of the electric guide rail 8032 is provided with a fourth telescopic cylinder 8033 arranged vertically downward, an output shaft of the fourth telescopic cylinder 8033 is provided with the first electric clamp 8034, the battery transfer assembly 804 includes a horizontal mounting plate 8041 arranged between the feeding conveying support 8011 and the discharging conveying support 8021, and a fifth telescopic cylinder 8042 is mounted on the horizontal mounting plate 8041 and faces the access test material port 5, and an output shaft of the fifth telescopic cylinder 8042 is connected with a second electric clamp 8043, when feeding, the feeding conveying belt 8013 conveys the battery to be tested to the access test material port 5, after the slide block of the electric guide rail 8032 drives the first electric clamp 8034 to move above the feeding conveying belt 8013, the output shaft of the fourth telescopic cylinder 8033 drives the first electric clamp 8034 to move downward, the first electric clamp 8034 clamps the upper part of the battery to be tested, the output shaft of the fourth telescopic cylinder 8033 drives the first electric clamp 8034 clamping the battery to be tested to move upward, after the slide block of the electric guide rail 8032 drives the fourth telescopic cylinder 8033 to move horizontally to the middle part, the output shaft of the fifth telescopic cylinder 8042 drives the second electric clamp 8043 to move, the second electric clamp 8043 fixes and clamps the battery to be tested clamped by the first electric clamp 8034, the output shaft of the fifth telescopic cylinder 8042 pushes the battery to be tested clamped by the second electric clamp 8043 to enter the access test material port 5, and places the clamped battery to be tested into the arc-shaped fixed clamp plate 401 and the arc-shaped movable clamp plate 403 for fixing.

[0032] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0033] In operation, when feeding, the feeding conveyor 8013 carries the battery to be tested to the feeding and discharging test material port 5, the slider of the electric guide rail 8032 drives the first electric clamp 8034 to move above the feeding conveyor 8013, the output shaft of the fourth telescopic cylinder 8033 drives the first electric clamp 8034 to move downward, the first electric clamp 8034 clamps the upper part of the battery to be tested, the output shaft of the fourth telescopic cylinder 8033 drives the first electric clamp 8034 clamping the battery to be tested to move upward, the slider of the electric guide rail 8032 drives the fourth telescopic cylinder 8033 to move horizontally to the middle part, the output shaft of the fifth telescopic cylinder 8042 drives the second electric clamp 8043 to move, the second electric clamp 8043 fixes and clamps the battery to be tested clamped by the first electric clamp 8034, the output shaft of the fifth telescopic cylinder 8042 pushes the battery to be tested clamped by the second electric clamp 8043 to enter the feeding and discharging test material port 5, and places the clamped battery to be tested in the arc-shaped fixed clamp plate 401 and the arc-shaped movable clamp plate 403, after placing the battery to be tested on the limiting support plate 404 inside the arc-shaped movable clamp plate 403, the output shaft of the first telescopic cylinder 403 pushes the arc-shaped movable clamp plate 403 to move toward the arc-shaped fixed clamp plate 401, so that the fixing and clamping of the battery to be tested can be completed, the arc-shaped fixed clamp plate 401 and the arc-shaped movable clamp plate 403 are adapted to the curved surface of the battery, the clamping force is uniformly distributed, the T-shaped guide slider 406 and the guide slot 407 are matched, the stability of the movement of the arc-shaped movable clamp plate 403 is improved, when the first electrode of the battery to be tested contacts the elastic conductive sheet 7012, the output shaft of the second telescopic cylinder 7011 pushes the elastic conductive sheet 7012 to extend into the test inlet 405 and makes the elastic conductive sheet 7012 contact the first electrode of the battery to be tested, when the second electrode of the battery to be tested contacts the conductive block 7026, the output shaft of the third telescopic cylinder 7022 pushes the sleeve 7023 to move, so that the telescopic connecting rod 7025 and the conductive block 7026 move downward until the conductive block 7026 contacts the second electrode of the battery to be tested, and the reset spring 7024 is compressed, which can ensure the contact stability of the conductive block 7026 and the second electrode of the battery to be tested, and can be suitable for testing batteries of different sizes, buffer electrode contact impact force, prevent battery deformation or electrode damage, the first electrode and the second electrode are independently driven, which improves the contact reliability, the output shaft of the DD direct drive motor 203 drives the rotating shaft 201 to rotate, the rotating shaft 201 rotates 60°, the rotating shaft 201 drives the multi-layer annular rotating platform 3 to rotate, provides high-precision angle control, ensures accurate positioning of the multi-layer annular rotating platform 3, avoids electrode contact failure caused by battery displacement, and the battery tester 6 can test the battery to be tested.

[0034] Those skilled in the art can understand that the above embodiments are specific examples for implementing the present application, and various changes can be made in form and details in actual application without departing from the spirit and scope of the present application.

Claims

1. A sodium ion battery charge and discharge test device, characterized in that: The invention comprises a test cylinder (1), wherein a PLC controller is installed on the outer wall of the test cylinder (1), wherein the interior of the test cylinder (1) is equidistantly connected to multiple layers of annular rotating platforms (3) distributed up and down via a rotating drive assembly (2), wherein multiple fixing clamping assemblies (4) for fixing and clamping batteries to be tested are equidistantly provided at the peripheral edge of each layer of the annular rotating platform (3), wherein the test cylinder (1) is symmetrically provided with inlet and outlet test ports (5) corresponding to the multiple layers of the annular rotating platforms (3), wherein the outer wall of the test cylinder (1) is provided with multiple battery testers (6) located on both sides of two symmetrical rows of inlet and outlet test ports (5), and wherein the inner wall of the test cylinder (1) is provided with an adaptive electrode contact module (7) electrically connected to the battery tester (6); The invention also includes an in-and-out material conveying mechanism (8) for conveying the battery to be tested to the fixed clamping assembly (4) of the annular rotating platform (3) through the in-and-out test material inlet (5), wherein the in-and-out material conveying mechanism (8) includes a feed conveying assembly (801) and a discharge conveying assembly (802), and a horizontal conveying assembly (803) for horizontally conveying the battery to be tested and a battery transfer assembly (804) for conveying the battery to be tested conveyed by the horizontal conveying assembly (803) to the fixed clamping assembly (4) through the in-and-out test material inlet (5) is provided between the feed conveying assembly (801) and the discharge conveying assembly (802).

2. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The rotary drive assembly (2) comprises a rotary shaft (201) arranged in the middle of the test cylinder (1); the multi-layer annular rotary platforms (3) are all fixedly sleeved on the rotary shaft (201); a U-shaped bracket (202) is provided at the top end of the test cylinder (1); a DD direct drive motor (203) for driving the rotary shaft (201) to rotate is installed at the top end of the bracket (202); and a rotary encoder (204) for real-time feedback of the rotation angle of the DD direct drive motor (203) is provided on the DD direct drive motor (203).

3. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The fixed clamping assembly (4) comprises an arc-shaped fixed clamping plate (401) arranged at the peripheral edge of the annular rotating platform (3); a first telescopic cylinder (402) corresponding to the arc-shaped fixed clamping plate (401) is installed on the top of the annular rotating platform (3); and an output shaft of the first telescopic cylinder (402) is connected to an arc-shaped movable clamping plate (403) matching the arc-shaped fixed clamping plate (401).

4. A sodium ion battery charge and discharge test device according to claim 3, characterized in that: The interior of the arc-shaped movable splint (403) is provided with an arc-shaped limiting support plate (404) for limiting support of the battery to be tested, the bottom end of the arc-shaped fixed splint (401) is provided with a test entrance (405), the bottom end of the arc-shaped movable splint (403) is provided with a T-shaped guide slider (406), and the top edge of the annular rotating platform (3) is provided with a guide slot (407) that slides in matching fashion with the guide slider (406).

5. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The adaptive electrode contact module (7) comprises a first electrode contact component (701) abutting against a first electrode of a battery to be tested and a second electrode contact component (702) abutting against a second electrode; The first electrode contact assembly (701) comprises a second telescopic cylinder (7011) mounted on the inner wall of the test cylinder (1) and facing the battery to be tested, and an output shaft of the second telescopic cylinder (7011) is connected to an elastic conductive sheet (7012) extending from a test inlet (405) and contacting a first electrode of the battery to be tested.

6. A sodium ion battery charge and discharge test device according to claim 5, characterized in that: The second electrode contact assembly (702) comprises an annular mounting plate (7021) arranged on the inner wall of the test cylinder (1); a third telescopic cylinder (7022) is mounted vertically downward at the inner edge of the bottom end of the annular mounting plate (7021); an output shaft of the third telescopic cylinder (7022) is connected to a sleeve (7023); a reset spring (7024) is provided inside the sleeve (7023); a telescopic connecting rod (7025) connected to the reset spring (7024) is provided at the bottom of the sleeve (7023); and a conductive block (7026) in contact with the second electrode is provided at the bottom end of the telescopic connecting rod (7025).

7. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The feed conveying assembly (801) includes a feed conveying bracket (8011) located near the inlet and outlet test material port (5), and the feed conveying bracket (8011) is provided with a plurality of groups of feed protection plates (8012) corresponding one to one to the plurality of inlet and outlet test material ports (5) on the same side, each group of feed protection plates (8012) is provided with two, and a feed conveyor belt (8013) is provided between the two feed protection plates (8012).

8. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The discharge conveying assembly (802) includes a discharge conveying bracket (8021) located near the inlet and outlet test material port (5), and the discharge conveying bracket (8021) is provided with a plurality of groups of discharge protection plates (8022) corresponding one to one to the plurality of inlet and outlet test material ports (5) on the same side, each group of discharge protection plates (8022) is provided with two, and a discharge conveyor belt (8023) is provided between the two discharge protection plates (8022).

9. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The horizontal transport assembly (803) includes a horizontal transport plate (8031) arranged between a feed transport bracket (8011) and a discharge transport bracket (8021); an electric guide rail (8032) is embedded at the bottom end of the horizontal transport plate (8031); a fourth telescopic cylinder (8033) extending vertically downward is provided on a slider of the electric guide rail (8032); and a first electric clamp (8034) is provided on an output shaft of the fourth telescopic cylinder (8033).

10. A sodium ion battery charge and discharge test device according to claim 1, characterized in that: The battery transfer assembly (804) includes a horizontal mounting plate (8041) disposed between a feed conveying support (8011) and a discharge conveying support (8021), a fifth telescopic cylinder (8042) facing the inlet and outlet test port (5) being mounted on the horizontal mounting plate (8041), and an output shaft of the fifth telescopic cylinder (8042) being connected to a second electric clamp (8043).

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