Charging and discharging testing device of lithium battery

Abstract

The invention discloses a lithium battery charge and discharge test device, and relates to the field of lithium battery charge and discharge test, the lithium battery charge and discharge test device comprises a support base, a console and a to-be-tested battery, the console is arranged outside the support base, the top of the to-be-tested battery is provided with a charge and discharge interface, and the top of the support base is rotatably connected with a test board. The test bench is driven by a motor, eight test grooves are annularly formed in the top of the test bench at equal intervals, and the to-be-tested batteries are placed in the test grooves. According to the charging and discharging testing device for the lithium battery, through mutual cooperation of the testing table, the charging and discharging testing unit, the discharging unit and the material distributing unit, feeding and discharging operation can be automatically carried out in the charging and discharging testing process of the lithium battery, so that the lithium battery testing work can be continuously carried out; and the tested batteries can be classified and conveyed, so that the testing process of the lithium batteries is more convenient, the safety is better, and the efficiency is higher.

Description

Technical Field

[0001] The invention relates to a lithium battery charge and discharge test technology, and in particular to a lithium battery charge and discharge test device. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. In addition, with the development of science and technology, lithium batteries have become mainstream. In order to evaluate the performance, reliability, and safety of batteries, lithium batteries need to be subjected to charge and discharge tests after production.

[0003] At present, the charging and discharging tests of lithium batteries are mostly carried out in test cabinets, which require operators to place lithium batteries in independent cabinets, connect the test wires to the lithium battery interfaces, and carry lithium batteries, which is time-consuming and laborious, and cannot form an assembly line test process. In the face of large batches of lithium battery production and testing needs, multiple people are required to operate at the same time, and the efficiency is low. In addition, the charging and discharging process of lithium batteries is a live operation, so manual removal and placement of lithium batteries is prone to safety accidents, which is not conducive to the continuous progress of lithium battery charging and discharging tests. Summary of the invention

[0004] The purpose of the present invention is to provide a charge and discharge test device for a lithium battery to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery charge and discharge test device, comprising a support base, a control console and a battery to be tested, wherein the control console is arranged outside the support base, a charge and discharge interface is arranged on the top of the battery to be tested, a test bench is rotatably connected to the top of the support base, the test bench is driven by a motor, the top of the test bench is in a circular ring shape and has eight test slots equidistantly provided thereon, the battery to be tested is placed in the test slots, a charge and discharge test unit corresponding to the test slots is arranged on the top of the test bench, and a material discharge unit is arranged at the bottom of the test slots;

[0006] The charge-discharge test unit comprises a mounting seat fixedly mounted on the top of the test bench, a bracket fixedly mounted on the top of the mounting seat, a test cylinder fixedly mounted on the bottom of the bracket, a test column fixedly mounted on the bottom of the telescopic end of the test cylinder, a charge-discharge test connector fixedly mounted on the bottom of the test column, and the charge-discharge test connector is electrically connected to the console;

[0007] The unloading unit comprises an operation chamber opened at the bottom of the test slot, the inner side surface of the test slot is slidably connected to two combined support plates, two sides of the inner wall of the operation chamber are symmetrically rotatably connected to two unloading cylinders, the telescopic ends of the two unloading cylinders are respectively rotatably connected to the bottoms of the two combined support plates, separation transverse grooves are symmetrically opened on both sides of the inner wall of the operation chamber, and the side surfaces of the combined support plates are fixedly connected to guide blocks adapted to the separation transverse grooves;

[0008] A feeding unit is disposed outside the support base, and the feeding unit is used to transport the battery to be tested to the test bench;

[0009] A material distribution unit is disposed outside the support base, and the material distribution unit is used to distribute and transport the tested batteries;

[0010] The positions of the feeding unit and the dividing unit correspond to two adjacent groups of test slots, and the feeding unit is arranged at the front side of the rotation direction of the test bench.

[0011] Furthermore, the combined shape and size of the two combined support plates are compatible with the test slot, the guide block is slidably connected to the inner side of the separation transverse slot, and when the telescopic end of the unloading cylinder contracts, the guide blocks on both sides move away from each other along the separation transverse slot.

[0012] Furthermore, a horizontal plate is fixedly connected to the bottom of the telescopic end of the test cylinder, a vertical guide groove corresponding to the position of the horizontal plate is opened on the side of the mounting seat, and a limiting slider is fixedly connected to the side of the horizontal plate and slidably connected to the inner side of the vertical guide groove.

[0013] Furthermore, the feeding unit includes a feeding conveyor platform, a feeding conveyor belt is arranged on the feeding conveyor platform, the top surface of the feeding conveyor belt is flush with the top surface of the test bench, side panels are symmetrically fixedly installed on both sides of the feeding conveyor platform, the same top plate is fixedly installed on the top of the two side plates, a vertically arranged lifting cylinder is installed on the top plate, the bottom of the telescopic end of the lifting cylinder is fixedly connected to a connecting plate, the side of the connecting plate is fixedly installed with a pushing cylinder, and the telescopic end of the pushing cylinder is fixedly connected to a push plate.

[0014] Furthermore, a supporting vertical groove is provided on the side facing each other of the side plates at both sides, and supporting clamping strips are symmetrically fixedly connected to both ends of the connecting plate, and the supporting clamping strips are slidably connected to the inner side surfaces of the supporting vertical grooves.

[0015] Furthermore, a positioning bar adapted to the test slot is fixedly installed on the top of the test bench. The positioning bar is U-shaped, and both side ends of the positioning bar are fixedly connected with guide bevel bars. The guide bevel bars on both sides are outwardly expanded away from the positioning bar, and the distance between the ends of the guide bevel bars on both sides that are away from each other is greater than the width of the feeding conveyor belt.

[0016] Furthermore, a lifting groove connected to the separation transverse groove is provided on the inner side surface of the test groove, and the size of the lifting groove is adapted to the guide block. When the telescopic end of the unloading cylinder is extended, the guide block moves up along the inner wall of the lifting groove and drives the combined support plate to move up to the top surface and be flush with the top surface of the test bench.

[0017] Furthermore, the material dividing unit includes a receiving plate arranged below the test bench, and the two sides of the receiving plate are symmetrically rotatably connected with the unloading plates, and the two sides of the top of the receiving plate and the two sides of the top of the unloading plate are provided with baffles, and a qualified product conveying platform and a defective product conveying platform corresponding to the unloading plates on both sides are installed below the test bench, and the qualified product conveying platform and the defective product conveying platform are provided with unloading conveyor belts, and support frames are fixedly installed on the opposite sides of the qualified product conveying platform and the defective product conveying platform, and the support frames on both sides are rotatably connected with material dividing cylinders, and the bottom surfaces of the two unloading plates are rotatably connected with connecting shafts, and the telescopic ends of the material dividing cylinders on both sides are fixedly connected to the connecting shafts on both sides.

[0018] Furthermore, the bottoms of the blanking plates on both sides are slidably connected to the surfaces of the qualified product conveying platform and the defective product conveying platform respectively.

[0019] Furthermore, the dimension of the receiving plate is greater than the dimension of the test slot, and the position of the receiving plate corresponds to the test slot.

[0020] Compared with the prior art, the lithium battery charge and discharge test device provided by the present invention has the following beneficial effects:

[0021] 1. The lithium battery charge and discharge test device can automatically load and unload materials during the lithium battery charge and discharge test through the cooperation between the test bench, the charge and discharge test unit, the unloading unit and the material dividing unit, so that the lithium battery test work can be carried out continuously, and the tested batteries can be transported by category, thereby making the lithium battery test process more convenient, safer and more efficient.

[0022] 2. The lithium battery charge and discharge test device, through the cooperation of the support card strip and the support vertical slot, enables the push plate to provide a stable supporting force to the push cylinder when pushing the lithium battery, so that the push plate can smoothly push the lithium battery to be tested into the test slot.

[0023] 3. The charging and discharging test device for lithium batteries, through the mutual cooperation between the positioning bars and the guiding oblique bars, enables the lithium batteries to reach the test slot position more accurately when the push plate pushes the lithium batteries to be tested, and there will be no positional deviation, thereby ensuring the smooth loading of the lithium batteries to be tested.

[0024] 4. The charging and discharging test device for lithium batteries is provided with a lifting slot, so that when the lithium batteries to be tested are loaded, the lithium batteries can be first pushed to the surface of the combined support plate, and then the lithium batteries are transported to the test slot through the cooperation of the unloading cylinder and the lifting slot, thereby ensuring the accuracy of lithium battery loading and facilitating the efficient testing of lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the structure of a test bench provided in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a partial cross-section of a test bench is provided for an embodiment of the present invention;

[0029] Figure 4 The embodiment of the present invention provides Figure 3 The enlarged structural diagram at A in the middle;

[0030] Figure 5 A schematic diagram of a structure of a side plate and a top plate in a separated state provided by an embodiment of the present invention;

[0031] Figure 6 An overall bottom view provided for an embodiment of the present invention;

[0032] Figure 7 A schematic diagram of the structure of a material distribution unit provided in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Support base; 2. Test table; 21. Test slot; 22. Charge and discharge test unit; 221. Mounting seat; 222. Bracket; 223. Test cylinder; 224. Test column; 225. Charge and discharge test connector; 226. Horizontal plate; 227. Vertical guide groove; 228. Limiting slider; 23. Unloading unit; 231. Combined support plate; 232. Unloading cylinder; 233. Separation horizontal groove; 234. Guide block; 3. Control console; 4. Feeding unit; 41. Feeding conveyor; 42 , feeding conveyor belt; 43, side plate; 44, top plate; 45, lifting cylinder; 46, connecting plate; 47, pushing cylinder; 48, pushing plate; 49, supporting vertical groove; 410, supporting card strip; 411, positioning strip; 412, guiding oblique strip; 413, lifting groove; 5, material distribution unit; 51, receiving plate; 52, unloading plate; 53, blocking bar; 54, qualified product conveying platform; 55, defective product conveying platform; 56, unloading conveyor belt; 57, supporting frame; 58, material distribution cylinder; 59, connecting shaft. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Embodiment 1:

[0037] See also Figure 1-Figure 7 A lithium battery charge and discharge test device comprises a support base 1, a control console 3 and a battery to be tested, wherein the control console 3 is arranged outside the support base 1, a charge and discharge interface is arranged on the top of the battery to be tested, a test bench 2 is rotatably connected to the top of the support base 1, the test bench 2 is driven by a motor, and eight test slots 21 are equidistantly provided on the top of the test bench 2 in a circular shape, the battery to be tested is placed in the test slot 21, a charge and discharge test unit 22 corresponding to the test slot 21 is arranged on the top of the test bench 2, and a material discharge unit 23 is arranged at the bottom of the test slot 21;

[0038] The charge and discharge test unit 22 includes a mounting base 221 fixedly mounted on the top of the test bench 2, a bracket 222 fixedly mounted on the top of the mounting base 221, a test cylinder 223 fixedly mounted on the bottom of the bracket 222, a test column 224 fixedly mounted on the bottom of the telescopic end of the test cylinder 223, a charge and discharge test connector 225 fixedly mounted on the bottom of the test column 224, and the charge and discharge test connector 225 is electrically connected to the console 3;

[0039] The unloading unit 23 includes an operation chamber opened at the bottom of the test slot 21, two combined support plates 231 are slidably connected to the inner side surface of the test slot 21, two unloading cylinders 232 are symmetrically rotatably connected to the two sides of the inner wall of the operation chamber, the telescopic ends of the two unloading cylinders 232 are respectively rotatably connected to the bottom of the two combined support plates 231, separation transverse grooves 233 are symmetrically opened on the two sides of the inner wall of the operation chamber, and the side surfaces of the combined support plates 231 are fixedly connected with guide blocks 234 adapted to the separation transverse grooves 233;

[0040] A feeding unit 4 is provided outside the supporting base 1, and the feeding unit 4 is used to convey the battery to be tested to the test bench 2;

[0041] A material distribution unit 5 is provided outside the support base 1, and the material distribution unit 5 is used to distribute and transport the tested batteries;

[0042] The positions of the feeding unit 4 and the dividing unit 5 correspond to two adjacent groups of test slots 21 , and the feeding unit 4 is arranged at the front side of the test table 2 in the rotation direction.

[0043] It should be noted that when the motor drives the test bench 2 to rotate, the single driving rotation angle of the test bench 2 is 45°. In addition, the rotation speed of the test bench 2 driven by the motor is set according to the time required for the actual test, and the number of test slots 21 on the test bench 2 can also be set according to the time required for the actual lithium battery test, so that the test device can perform continuous tests on lithium batteries more efficiently.

[0044] In this embodiment, the combined shape and size of the two combined support plates 231 are compatible with the test slot 21, the guide block 234 is slidably connected to the inner side surface of the separation transverse groove 233, and when the telescopic end of the unloading cylinder 232 contracts, the guide blocks 234 on both sides move along the separation transverse groove 233 in a direction away from each other.

[0045] In this embodiment, a horizontal plate 226 is fixedly connected to the bottom of the telescopic end of the test cylinder 223, a vertical guide groove 227 corresponding to the position of the horizontal plate 226 is opened on the side of the mounting seat 221, and a limiting slider 228 is fixedly connected to the side of the horizontal plate 226 and is slidably connected to the inner side of the vertical guide groove 227.

[0046] It should be supplemented that the feeding unit 4 includes a feeding conveyor platform 41, on which a feeding conveyor belt 42 is arranged, the top surface of the feeding conveyor belt 42 is flush with the top surface of the test bench 2, and side panels 43 are symmetrically fixedly installed on both sides of the feeding conveyor platform 41, and the top of the two side panels 43 is fixedly installed with the same top plate 44, and a vertically arranged lifting cylinder 45 is installed on the top plate 44, and the bottom of the telescopic end of the lifting cylinder 45 is fixedly connected to a connecting plate 46, and a pushing cylinder 47 is fixedly installed on the side of the connecting plate 46, and the telescopic end of the pushing cylinder 47 is fixedly connected to a push plate 48.

[0047] Furthermore, the material dividing unit 5 includes a receiving plate 51 arranged below the test bench 2, and the receiving plate 51 is symmetrically rotatably connected to the two sides of the receiving plate 51. Both sides of the top of the receiving plate 51 and both sides of the top of the blanking plate 52 are provided with blocking bars 53. A qualified product conveying platform 54 and a defective product conveying platform 55 corresponding to the blanking plates 52 on both sides are installed below the test bench 2. The qualified product conveying platform 54 and the defective product conveying platform 55 are provided with a blanking conveyor belt 56. Support frames 57 are fixedly installed on the opposite sides of the qualified product conveying platform 54 and the defective product conveying platform 55. The support frames 57 on both sides are rotatably connected to the material dividing cylinders 58. The bottom surfaces of the two blanking plates 52 are rotatably connected to the connecting shafts 59, and the telescopic ends of the material dividing cylinders 58 on both sides are fixedly connected to the connecting shafts 59 on both sides.

[0048] It should be noted that the two material dividing cylinders 58 are electrically connected to the control console 3, so that the control console 3 can control the operation of the material dividing cylinders 58 at the corresponding positions according to the actual test results, so that the tested lithium batteries can fall on the corresponding qualified product conveying platform 54 or the surface of the unloading conveyor belt 56 on the defective product conveying platform 55.

[0049] In order to ensure the stability of the blanking plate 52 during movement, the bottoms of the blanking plates 52 on both sides are slidingly connected to the surfaces of the qualified product conveying platform 54 and the defective product conveying platform 55 respectively, so that the blanking plate 52 carrying the lithium battery can be auxiliary supported by the qualified product conveying platform 54 or the defective product conveying platform 55, so that the blanking plate 52 can maintain a stable moving state.

[0050] In order to ensure that the tested lithium battery can fall smoothly on the receiving plate 51, the size of the receiving plate 51 is larger than the size of the test slot 21, and the position of the receiving plate 51 corresponds to the test slot 21, so that the tested lithium battery in the test slot 21 can fall more smoothly on the receiving plate 51.

[0051] During operation, the test bench 2 is driven to rotate by the motor, so that the test slot 21 without the battery to be tested is rotated to the position corresponding to the feeding conveyor belt 42. At this time, under the conveyance of the feeding conveyor belt 42, the battery to be tested is conveyed to partly contact with the test bench 2. At this time, the telescopic end of the lifting cylinder 45 extends downward and drives the connecting plate 46 to move downward, so that the push cylinder 47 and the push plate 48 move downward synchronously. When the push plate 48 moves to the position height corresponding to the battery to be tested on the feeding conveyor belt 42, the telescopic end of the lifting cylinder 45 no longer extends downward, and the telescopic end of the push cylinder 47 extends and drives the push plate 48 to move. The push plate 48 moves and pushes the battery to be tested to move toward the test slot 21 until the battery to be tested falls into the test slot 21, and then the telescopic end of the push cylinder 47 retracts and drives the push plate 48 to move in the opposite direction to reset. At the same time, the telescopic end of the lifting cylinder 45 also contracts and drives the push cylinder 47 and the push plate 48 to move upward to reset.

[0052] After the battery to be tested falls into the test slot 21, the test cylinder 223 at the position corresponding to the test slot 21 is started, and its telescopic end moves downward and drives the horizontal plate 226 to move downward. The horizontal plate 226 moves downward and drives the test column 224 and the charge-discharge test connector 225 to move downward synchronously, so that the charge-discharge test connector 225 can move downward to be plugged into the charge-discharge interface on the battery to be tested. When the charge-discharge test connector 225 is plugged into the charge-discharge interface, the charge-discharge test of the lithium battery begins;

[0053] When the test bench 2 continues to rotate and drives the test slot 21 to rotate to a position corresponding to the receiving plate 51, the test of the lithium battery in the test slot 21 is completed, and the test result is transmitted to the control console 3 through the charge and discharge test connector 225. At this time, the test slot 21 rotates to the end of the test stroke along with the test bench 2, and the telescopic end of the test cylinder 223 contracts upward to drive the charge and discharge test connector 225 below it to move upward and separate from the charge and discharge interface on the lithium battery. At the same time, the telescopic end of the unloading cylinder 232 below the test slot 21 contracts and drives the two combined support plates 231 to move away from each other, so that they are gradually separated from the lithium battery after the test is completed, so that the lithium battery eventually loses support and moves downward along the inner wall of the test slot 21, and finally falls on the surface of the receiving plate 51;

[0054] After the tested lithium battery falls on the surface of the receiving plate 51, the control console 3 controls the starting of the material dividing cylinder 58 on the corresponding side according to the actual detection result. When the material dividing cylinder 58 is started, its telescopic end extends outward and drives the bottom end of the unloading plate 52 on this side to slide along the surface of the qualified product conveying platform 54 or the defective product conveying platform 55 on this side, so that the end of the receiving plate 51 connected to its top end rotates downward, thereby making the receiving plate 51 and the unloading plate 52 on this side rotate synchronously until the surfaces of the two remain in a relatively flat state. At this time, the lithium battery on the receiving plate 51 will slide downward under the action of its own weight, and finally slide from the bottom end of the unloading plate 52 to the unloading conveyor belt 56, and be transported by the unloading conveyor belt 56;

[0055] After the lithium battery in the test slot 21 is taken out, the corresponding unloading cylinder 232 is started again, and its telescopic end extends outward, thereby driving the two combined support plates 231 to move towards each other, so that they can continue to carry the lithium battery dropped into the test slot 21. As the test bench 2 continues to rotate, the test slot 21 will rotate again to a position corresponding to the feeding conveyor belt 42, so that the lithium battery can continue to be placed and tested, so that the charging and discharging test of the lithium battery can be carried out continuously.

[0056] Embodiment 2:

[0057] See also Figure 5 This embodiment provides a technical solution based on the above embodiment: a support vertical groove 49 is opened on the opposite side of the side panels 43, and support clips 410 are symmetrically fixedly connected to the two ends of the connecting plate 46, and the support clips 410 are slidably connected to the inner side surface of the support vertical groove 49.

[0058] It should be noted that, through the cooperation between the support bar 410 and the support vertical slot 49 , the push plate 48 can provide a stable supporting force to the push cylinder 47 when pushing the lithium battery, so that the push plate 48 can smoothly push the lithium battery to be tested into the test slot 21 .

[0059] Embodiment 3:

[0060] See also Figure 2, this embodiment provides a technical solution based on the above embodiment: a positioning bar 411 adapted to the test slot 21 is fixedly installed on the top of the test bench 2, the positioning bar 411 is U-shaped, and both side ends of the positioning bar 411 are fixedly connected with guide bevel bars 412, the guide bevel bars 412 on both sides are outwardly expanded away from the side of the positioning bar 411, and the distance between the ends of the guide bevel bars 412 on both sides away from each other is greater than the width of the feeding conveyor belt 42, so that when the push plate 48 pushes the lithium battery to be tested, the lithium battery can reach the position of the test slot 21 more accurately, and there will be no positional deviation, thereby ensuring the smooth loading of the lithium battery to be tested.

[0061] Embodiment 4:

[0062] See also Figure 4 The present embodiment provides a technical solution based on the above embodiment: a lifting groove 413 connected to the separation transverse groove 233 is provided on the inner side of the test slot 21, and the size of the lifting groove 413 is adapted to the guide block 234. When the telescopic end of the unloading cylinder 232 is extended, the guide block 234 moves up along the inner wall of the lifting groove 413 and drives the combined support plate 231 to move up to the top surface flush with the top surface of the test bench 2, so that when the lithium battery to be tested is loaded, the lithium battery can be first pushed to the surface of the combined support plate 231, and then the lithium battery is transported to the test slot 21 through the cooperation of the unloading cylinder 232 and the lifting groove 413, thereby ensuring the stability of the lithium battery loading work.

[0063] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium battery charge and discharge test device, comprising a support base (1), a control console (3) and a battery to be tested, wherein the control console (3) is arranged outside the support base (1), and a charge and discharge interface is arranged on the top of the battery to be tested, characterized in that: The top of the support base (1) is rotatably connected to a test bench (2), the test bench (2) is driven by a motor, the top of the test bench (2) is provided with eight test slots (21) at equal intervals in a circular ring shape, the battery to be tested is placed in the test slot (21), the top of the test bench (2) is provided with a charge and discharge test unit (22) corresponding to the test slot (21), and the bottom of the test slot (21) is provided with a material unloading unit (23); The charge-discharge test unit (22) comprises a mounting seat (221) fixedly mounted on the top of the test bench (2); a bracket (222) is fixedly mounted on the top of the mounting seat (221); a test cylinder (223) is fixedly mounted on the bottom of the bracket (222); a test column (224) is fixedly mounted on the bottom of the telescopic end of the test cylinder (223); a charge-discharge test connector (225) is fixedly mounted on the bottom of the test column (224); and the charge-discharge test connector (225) is electrically connected to the console (3); The unloading unit (23) comprises an operation chamber provided at the bottom of the test slot (21); two combined support plates (231) are slidably connected to the inner side surface of the test slot (21); two unloading cylinders (232) are symmetrically rotatably connected to the two sides of the inner wall of the operation chamber; the telescopic ends of the two unloading cylinders (232) are respectively rotatably connected to the bottoms of the two combined support plates (231); separation transverse grooves (233) are symmetrically provided on the two sides of the inner wall of the operation chamber; and guide blocks (234) adapted to the separation transverse grooves (233) are fixedly connected to the sides of the combined support plates (231); A feeding unit (4) is arranged outside the support base (1), and the feeding unit (4) is used to transport the battery to be tested to the test bench (2); A material distribution unit (5) is arranged outside the support base (1), and the material distribution unit (5) is used to distribute and transport the batteries after testing; The positions of the feeding unit (4) and the dividing unit (5) correspond to two adjacent groups of test slots (21), and the feeding unit (4) is arranged at the front side of the rotation direction of the test bench (2).

2. A lithium battery charge and discharge test device according to claim 1, characterized in that: The combined shape and size of the two combined support plates (231) are compatible with the test slot (21), the guide block (234) is slidably connected to the inner side surface of the separation transverse slot (233), and when the telescopic end of the unloading cylinder (232) is retracted, the guide blocks (234) on both sides move along the separation transverse slot (233) in directions away from each other.

3. A lithium battery charge and discharge test device according to claim 1, characterized in that: A horizontal plate (226) is fixedly connected to the bottom of the telescopic end of the test cylinder (223), a vertical guide groove (227) corresponding to the position of the horizontal plate (226) is opened on the side of the mounting seat (221), and a limiting slider (228) is fixedly connected to the side of the horizontal plate (226) and is slidably connected to the inner side of the vertical guide groove (227).

4. A lithium battery charge and discharge test device according to claim 1, characterized in that: The feeding unit (4) comprises a feeding conveying platform (41), a feeding conveying belt (42) is arranged on the feeding conveying platform (41), the top surface of the feeding conveying belt (42) is flush with the top surface of the test bench (2), side panels (43) are symmetrically fixedly installed on both sides of the feeding conveying platform (41), the top of the two side panels (43) is fixedly installed with the same top panel (44), a vertically arranged lifting cylinder (45) is installed on the top panel (44), the bottom of the telescopic end of the lifting cylinder (45) is fixedly connected to a connecting plate (46), a pushing cylinder (47) is fixedly installed on the side of the connecting plate (46), and the telescopic end of the pushing cylinder (47) is fixedly connected to a pushing plate (48).

5. A lithium battery charge and discharge test device according to claim 4, characterized in that: The side panels (43) on both sides are provided with supporting vertical grooves (49) on the sides facing each other, and the two ends of the connecting plate (46) are symmetrically fixedly connected with supporting clamping strips (410), and the supporting clamping strips (410) are slidably connected to the inner side surfaces of the supporting vertical grooves (49).

6. A lithium battery charge and discharge test device according to claim 4, characterized in that: A positioning bar (411) adapted to the test slot (21) is fixedly mounted on the top of the test bench (2); the positioning bar (411) is arranged in a U shape, and both ends of the positioning bar (411) are fixedly connected to guide bevel bars (412); the guide bevel bars (412) on both sides are arranged in an outwardly expanded shape away from the positioning bar (411); and the distance between the ends of the guide bevel bars (412) on both sides that are away from each other is greater than the width of the feeding conveyor belt (42).

7. A lithium battery charge and discharge test device according to claim 4, characterized in that: The inner side surface of the test slot (21) is provided with a lifting slot (413) connected to the separation transverse slot (233), and the size of the lifting slot (413) is matched with the guide block (234). When the telescopic end of the unloading cylinder (232) is extended, the guide block (234) moves up along the inner wall of the lifting slot (413) and drives the combined support plate (231) to move up to the top surface and flush with the top surface of the test bench (2).

8. A lithium battery charge and discharge test device according to claim 1, characterized in that: The material distribution unit (5) comprises a receiving plate (51) arranged below the test bench (2), and the receiving plate (51) is symmetrically rotatably connected to the two sides with a material discharge plate (52), and the two sides of the top of the receiving plate (51) and the two sides of the top of the material discharge plate (52) are both provided with blocking bars (53), and a qualified product conveying platform (54) and a defective product conveying platform (55) corresponding to the material discharge plates (52) on both sides are installed below the test bench (2), and the qualified product conveying platform (5 4) and the defective product conveying platform (55) are both provided with a material unloading conveying belt (56), a support frame (57) is fixedly installed on the opposite side of the qualified product conveying platform (54) and the defective product conveying platform (55), and a material distribution cylinder (58) is rotatably connected to the support frame (57) on both sides, and the bottom surfaces of the two material unloading plates (52) are rotatably connected to the connecting shaft (59), and the telescopic ends of the material distribution cylinder (58) on both sides are respectively fixedly connected to the connecting shaft (59) on both sides.

9. A lithium battery charge and discharge test device according to claim 8, characterized in that: The bottoms of the blanking plates (52) on both sides are respectively slidably connected to the surfaces of the qualified product conveying platform (54) and the defective product conveying platform (55).

10. A lithium battery charge and discharge test device according to claim 9, characterized in that: The dimension value of the receiving plate (51) is greater than the dimension value of the test slot (21), and the position of the receiving plate (51) corresponds to the test slot (21).

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