Charging and discharging testing device applied to battery cell

Abstract

The utility model discloses a charge and discharge testing device applied to a battery cell, which comprises a base frame structure and an assembling structure, a stepping motor drives a fluted disc to rotate, the fluted disc drives a column casing, an annular tooth groove, a clamping groove, a mounting frame, a frame disc and a cell assembly to sequentially rotate by 60 degrees, and then a hydraulic cylinder device drives a placing disc and a cable contact piece assembly to move downwards to reset. The cable contact piece assembly arranged at the rear end is matched with external charging equipment to charge the six battery cell assemblies arranged in the device in sequence, and the cable contact piece assembly arranged at the front end is matched with external discharging equipment to discharge the six battery cell assemblies arranged in the device in sequence. Through the arrangement, the device main body is convenient to distribute and place the battery cell components, the device can carry out rotation replacement of charge and discharge tests on the battery cell components, manual intervention is reduced, and the device is suitable for carrying out cyclic charge and discharge tests on the battery cell components.

Description

Technical Field

[0001] This utility model relates to the field of battery cell testing technology, specifically to a charge and discharge testing device for battery cells. Background Technology

[0002] During the batch production of battery cells, it is necessary to sample and select battery cells for charge and discharge testing in order to study the battery's lifespan degradation and thus determine the battery's charge and discharge status and capacity. This can be taken as an example of a charge and discharge testing device for battery cells.

[0003] Some battery cell placement devices used in charge-discharge testing of battery cells are not convenient for distributing and placing battery cell components, and the devices are not convenient for rotating and replacing battery cell components for charge-discharge testing, resulting in a lot of manual intervention. Therefore, in order to address the above problems, a charge-discharge testing device for battery cells is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a charge and discharge testing device for battery cells, which solves the problem that the main body of the cell placement device in some battery cell charge and discharge testing devices is not convenient for distributing and placing the cell components, and the device is not convenient for rotating and replacing the cell components for charge and discharge testing, resulting in a lot of manual intervention.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A charge / discharge testing device for battery cells includes a base frame structure and an assembly structure. The assembly structure is located on the top of the base frame structure. The base frame structure includes a pad, a sleeve, a hydraulic cylinder device, a ring bar, a mounting plate, and cable contact assemblies. The sleeve and hydraulic cylinder device are fixedly mounted on the top of the pad. The hydraulic cylinder device is located inside the sleeve. A ring bar is fixedly mounted on the outside of the sleeve. The mounting plate is fixedly mounted on the top of the hydraulic cylinder device. Two cable contact assemblies are symmetrically and fixedly mounted on the front and rear ends of the top of the mounting plate. The assembly structure includes a stepper motor, a geared disc, a cylindrical column, an annular toothed groove, a slot, a mounting bracket, a frame, and a battery cell assembly. The bottom end of the stepper motor is fixedly mounted to the top of the pad. A geared disc is fixedly mounted on the end of the stepper motor spindle. A cylindrical column is located on the right end of the geared disc. An annular toothed groove is formed on the outside of the cylindrical column. A slot is formed on the inner wall of the cylindrical column. Six mounting brackets are symmetrically and fixedly mounted on the outside of the cylindrical column. A frame is fixedly mounted between adjacent mounting brackets. A battery cell assembly is slidably placed inside the frame.

[0007] Preferably, the teeth fixedly disposed on the outer side of the toothed disc engage with the tooth grooves disposed inside the annular tooth groove.

[0008] Preferably, the ring bar is rotatably configured with a groove on the inner wall of the column, and the outer side of the sleeve is rotatably configured with respect to the inner wall of the column.

[0009] Preferably, the bottom of the rear-end contact assembly of the cable contact assembly is fixedly placed in contact with the top conductive contact of the rear-end battery cell assembly, and the top of the rear-end cable contact assembly is electrically connected to an external charging test device.

[0010] Preferably, the bottom of the front-end contact assembly of the cable contact assembly is fixedly placed in contact with the top conductive contact of the front-end battery cell assembly, and the top of the front-end cable contact assembly is electrically connected to the external discharge test equipment.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, after each battery cell assembly is fully charged, the hydraulic cylinder drives the placement plate and cable contact assembly to move upwards, and the stepper motor drives the gear plate to rotate. Because the teeth fixed on the outer side of the gear plate mesh with the grooves inside the annular toothed groove, the gear plate drives the column, annular toothed groove, slot, mounting bracket, frame, and battery cell assembly to rotate 60 degrees sequentially. The annular strip rotates with the slot on the inner wall of the column, and the outer side of the sleeve rotates with the inner wall of the column. Subsequently, the hydraulic cylinder drives the placement plate and cable contact assembly to move downwards and reset. The cable contact assembly at the rear end, in cooperation with an external charging device, sequentially charges the six battery cell assemblies inside the device. Similarly, the cable contact assembly at the front end, in cooperation with an external discharging device, sequentially discharges the six battery cell assemblies inside the device. This design allows for convenient distribution of battery cell assemblies, enables rotational replacement of battery cell assemblies for charge / discharge testing, reduces manual intervention, and is suitable for cyclic charge / discharge testing of battery cell assemblies. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the upper and lower split structure of the battery cell assembly of this utility model;

[0015] Figure 3 This is a schematic diagram of some components of the base frame structure of this utility model;

[0016] Figure 4 This is a cross-sectional schematic diagram of some components of the base frame structure of this utility model;

[0017] Figure 5 This utility model Figure 4A magnified structural diagram at point A;

[0018] Figure 6 This is a schematic diagram of some components of the assembly structure of this utility model;

[0019] Figure 7 This is a cross-sectional schematic diagram of some components of the assembly structure of this utility model;

[0020] Figure 8 This utility model Figure 7 A magnified structural diagram at point B;

[0021] Figure 9 This is a combined cross-sectional schematic diagram of the base frame structure and assembly structure of this utility model;

[0022] Figure 10 This utility model Figure 9 A magnified structural diagram at point C.

[0023] In the diagram: 1. Base frame structure; 11. Pad; 12. Sleeve; 13. Hydraulic cylinder device; 14. Ring bar; 15. Plate; 16. Cable contact assembly; 2. Assembly structure; 21. Stepper motor; 22. Gear plate; 23. Column; 24. Annular toothed groove; 25. Slot; 26. Mounting bracket; 27. Frame plate; 28. Battery cell assembly. Detailed Implementation

[0024] 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.

[0025] In the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the position or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Similarly, words such as "a," "one," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0026] Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Please see Figure 1-10 This utility model provides a technical solution:

[0028] A charge / discharge testing device for battery cells includes a base frame structure 1 and an assembly structure 2. The assembly structure 2 is located on top of the base frame structure 1. The base frame structure 1 includes a pad 11, a sleeve 12, a hydraulic cylinder device 13, a ring bar 14, a mounting plate 15, and cable contact assembly 16. The sleeve 12 and the hydraulic cylinder device 13 are fixedly mounted on the top of the pad 11. The hydraulic cylinder device 13 is located inside the sleeve 12. The ring bar 14 is fixedly mounted on the outside of the sleeve 12. The mounting plate 15 is fixedly mounted on the top of the hydraulic cylinder device 13. Two cable contact assemblies 16 are symmetrically and fixedly mounted on the front and rear ends of the top of the mounting plate 15. Assembly structure 2 includes a stepper motor 21, a gear plate 22, a column cylinder 23, an annular toothed groove 24, a slot 25, a mounting bracket 26, a frame plate 27, and a battery cell assembly 28. The bottom end of the stepper motor 21 is fixedly mounted to the top end of the pad 11. A gear plate 22 is fixedly mounted at the end of the main shaft of the stepper motor 21. A column cylinder 23 is mounted at the right end of the gear plate 22. An annular toothed groove 24 is opened on the outer side of the column cylinder 23. A slot 25 is opened on the inner wall of the column cylinder 23. Six mounting brackets 26 are symmetrically distributed and fixedly mounted on the outer side of the column cylinder 23. A frame plate 27 is fixedly mounted between adjacent mounting brackets 26. The battery cell assembly 28 is slidably placed inside the frame plate 27.

[0029] The teeth fixed on the outer side of the toothed disc 22 mesh with the tooth grooves inside the annular tooth groove 24. Through the above arrangement, the toothed disc 22 and the annular tooth groove 24 are meshing and rotating.

[0030] The ring bar 14 is rotatably connected to the groove 25 provided on the inner wall of the column cylinder 23, and the outer side of the sleeve 12 is rotatably connected to the inner wall of the column cylinder 23. Through the above settings, the column cylinder 23, the annular toothed groove 24, the groove 25, the mounting bracket 26, the frame plate 27, and the battery cell assembly 28 are rotated and limited.

[0031] The bottom of the rear-mounted contact assembly of the cable contact assembly 16 is placed in contact with the top conductive contact of the rear-mounted battery cell assembly 28. The top of the cable contact assembly 16 is electrically connected to the external charging test equipment. Through the above arrangement, an electrical connection structure is formed between the rear-mounted cable contact assembly 16 and the external charging test equipment.

[0032] The bottom of the front-end fixed contact assembly of the cable contact assembly 16 is placed in contact with the top conductive contact of the front-end battery cell assembly 28. The top of the front-end fixed cable contact assembly 16 is electrically connected to the external discharge test equipment. Through the above arrangement, an electrical connection structure is formed between the front-end cable contact assembly 16 and the external discharge test equipment.

[0033] Workflow: This utility model provides a charge and discharge testing device for battery cells. The main body of the device facilitates the distribution and placement of the cell assembly 28. The device can rotate and replace the cell assembly 28 for charge and discharge testing, reducing manual intervention. It is suitable for cyclic charge and discharge testing of the cell assembly 28.

[0034] The hydraulic cylinder device 13 and stepper motor 21 installed inside the device are controlled by an external PLC controller. The hydraulic cylinder device 13 and stepper motor 21 are electrically connected to an external power supply. The cable assembly fixed at the top of the cable contact assembly 16 at the rear is electrically connected to an external charging test device. The cable assembly fixed at the top of the cable contact assembly 16 at the front is electrically connected to an external discharge test device.

[0035] Before the device is used, the hydraulic cylinder device 13 drives the placement plate 15 and the cable contact assembly 16 to move upward, leaving a certain space at the top of the frame plate 27 for vertically placing the battery cell assembly 28 to be charged and discharged. Then, the hydraulic cylinder device 13 drives the placement plate 15 and the cable contact assembly 16 to move downward to reset, so that the bottom of the contact assembly fixed at the rear end of the cable contact assembly 16 contacts the top conductive contact of the battery cell assembly 28, and the bottom of the contact assembly fixed at the front end of the cable contact assembly 16 contacts the top conductive contact of the battery cell assembly 28. The external charging test equipment charges the battery cell assembly 28 through the cable contact assembly 16.

[0036] After each battery cell assembly 28 is fully charged, the hydraulic cylinder device 13 drives the placement plate 15 and the cable contact assembly 16 to move upward, and the stepper motor 21 drives the gear plate 22 to rotate. Since the teeth fixed on the outer side of the gear plate 22 mesh with the grooves inside the annular tooth groove 24, the gear plate 22 drives the column cylinder 23, the annular tooth groove 24, the slot 25, the mounting bracket 26, the frame plate 27, and the battery cell assembly 28 to rotate 60 degrees in sequence. Among them, the ring bar 14 rotates with the slot 25 on the inner wall of the column cylinder 23, and the outer side of the sleeve 12 rotates with the inner wall of the column cylinder 23. Then, the hydraulic cylinder device 13 drives the placement plate 15 and the cable contact assembly 16 to move downward and reset. The six battery cell assemblies 28 inside the device are charged in sequence by the cooperation of the cable contact assembly 16 at the rear end and the external charging equipment. The six battery cell assemblies 28 inside the device are discharged in sequence by the cooperation of the cable contact assembly 16 at the front end and the external discharging equipment. This reduces manual intervention and is suitable for cyclic charging and discharging tests of the battery cell assembly 28.

[0037] 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 charge-discharge testing device applied to a battery cell, comprising a base frame structure (1) and an assembly structure (2), characterized in that: The base frame structure (1) top is provided with assembly structure (2), the base frame structure (1) includes pad (11), sleeve (12), hydraulic cylinder device (13), ring strip (14), disc (15) and cable contact piece assembly (16), the pad (11) top is fixedly provided with sleeve (12), hydraulic cylinder device (13), the hydraulic cylinder device (13) is located inside sleeve (12), the outside of sleeve (12) is fixedly provided with ring strip (14), the top of hydraulic cylinder device (13) is fixedly provided with disc (15), the top of disc (15) is fixedly provided with two cable contact piece assemblies (16) at the front end of top, the back end of top, the assembly structure (2) includes stepper motor (21), gear disc (22), cylinder (23), annular gear slot (24), clamping groove (25), mounting bracket (26), frame disc (27) and electric core assembly (28), the bottom of stepper motor (21) is fixedly provided with pad (11) top, the main shaft end of stepper motor (21) is fixedly provided with gear disc (22), the right end of gear disc (22) is provided with cylinder (23), the outside of cylinder (23) is provided with annular gear slot (24), the inner wall of cylinder (23) is provided with clamping groove (25), the outside of cylinder (23) is fixedly provided with six mounting brackets (26), the mounting bracket (26) is fixedly provided with frame disc (27) between adjacent settings, the inside of frame disc (27) is slidably placed with electric core assembly (28). 2.The charging and discharging test device applied to a battery cell of claim 1, wherein: The gear teeth fixedly provided outside the gear disc (22) are engaged with the gear slot provided inside the annular gear slot (24). 3.The charging and discharging test device applied to a battery cell of claim 1, wherein: The ring strip (14) is rotationally arranged with the clamping groove (25) provided on the inner wall of the cylinder (23), and the outside of the sleeve (12) is rotationally arranged with the inner wall of the cylinder (23).

4. The charging and discharging test device for battery cells of claim 1, wherein: The bottom of the contact piece assembly fixedly provided at the rear end of the cable contact piece assembly (16) is in contact with the top conductive contact block of the electric core assembly (28) arranged at the rear, and the cable assembly fixedly provided at the top of the cable contact piece assembly (16) arranged at the rear is electrically connected with the external charging test equipment.

5. The charging and discharging test device for battery cells of claim 1, wherein: The bottom of the contact piece assembly fixedly provided at the front end of the cable contact piece assembly (16) arranged at the front is in contact with the top conductive contact block of the electric core assembly (28) arranged at the front, and the cable assembly fixedly provided at the top of the cable contact piece assembly (16) arranged at the front is electrically connected with the external discharge test equipment.

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