Battery capacity grading testing device

Abstract

The utility model discloses a battery capacity grading testing device, which comprises a bottom plate, a first surface of the bottom plate is provided with a plurality of detection stations, and the detection stations are used for bearing and fixing batteries; the test plate is arranged on one side of the first surface of the bottom plate and is provided with test probes of which the number corresponds to that of the detection stations; and the driving mechanism is connected with the test plate and is used for driving the test plate to be close to or far away from the detection station. According to the battery capacity grading test device provided by the invention, the bottom plate is provided with the plurality of detection stations, each detection station can detect the battery, the battery capacity grading detection efficiency is improved, meanwhile, the driving mechanism automatically drives the test plate to be close to or far away from the bottom plate, so that the test probes on the test plate are close to the test end of the battery to carry out capacity grading detection, and the test efficiency is improved. Therefore, the battery can be conveniently assembled and disassembled, the labor cost is saved, the detection efficiency of battery capacity grading detection is greatly improved, and wide application is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery, in particular to a battery capacity grading test device. BACKGROUND

[0002] Battery capacity grading refers to the process of screening and grading batteries through charge and discharge test. The process includes charging and discharging each lithium battery, recording data of each test point by computer, and determining the capacity and internal resistance of each battery and the quality grade of lithium battery.

[0003] In the prior art, when the staff performs capacity grading on the battery, the staff usually connects the two end poles of the battery with a wire, a connecting sheet and a screw to charge and discharge. However, the staff needs to assemble and disassemble the battery in the formation and capacity grading workshop, the working environment of the workshop is poor, and the staff has low working efficiency and high labor intensity.

[0004] Therefore, there is an urgent need for a battery capacity grading test device to solve the above problems. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model embodiment is to provide a battery capacity grading test device, which can improve the detection efficiency of battery capacity grading detection.

[0006] In order to solve the above technical problem, the utility model provides a battery capacity grading test device, which comprises a bottom plate, a plurality of detection stations are arranged on the first surface of the bottom plate, and the detection stations are used for bearing and fixing batteries; a test plate is arranged on one side of the first surface of the bottom plate, and the test plate is provided with test probes corresponding to the number of detection stations; a driving mechanism is connected with the test plate and used for driving the test plate to approach or move away from the detection stations.

[0007] In a feasible implementation manner, the battery capacity grading test device further comprises a support and a bearing assembly, the support is fixedly connected with the bottom plate, and the bearing assembly is adjustably arranged on the support; a fixed end of the driving mechanism is fixedly connected with the bearing assembly, and a movable end of the driving mechanism is fixedly connected with the test plate.

[0008] In a feasible implementation manner, the driving mechanism comprises at least one toggle clamp, the toggle clamp comprises a driving rod, a connecting rod, a push-pull rod and a fixing piece, the driving rod has a first end, a second end and a third end, the first end of the driving rod is hingedly connected with the first end of the push-pull rod, and the second end of the push-pull rod is fixedly connected with the test plate; the fixing piece is sleeved outside the push-pull rod and fixedly connected with the bearing assembly, the first end of the connecting rod is fixedly hingedly connected with the fixing piece, and the second end of the connecting rod is hingedly connected with the second end of the driving rod.

[0009] In a feasible implementation, the bearing assembly is provided with a through hole, and the second end of the push-pull rod penetrates through the through hole and is fixedly connected with the test plate.

[0010] In a feasible implementation, the driving mechanism further comprises at least one guide assembly arranged between the bearing assembly and the test plate and used for guiding the moving direction of the test plate towards or away from the base plate.

[0011] In a feasible implementation, the guide assembly comprises a guide column and a guide sleeve, the first end of the guide column penetrates through the bearing assembly and is fixedly connected with the test plate, the guide sleeve is fixedly connected with the bearing assembly and is sleeved outside the second end of the guide column, and the guide sleeve is in clearance fit with the guide column.

[0012] In a feasible implementation, the battery capacity testing device further comprises a limiting assembly, the limiting assembly comprises a plurality of limiting plates, the plurality of limiting plates are uniformly arranged on the first surface of the base plate along a first direction, the length direction of each limiting plate is arranged along a second direction, and the detection station is formed between adjacent two limiting plates, and the first direction is perpendicular to the second direction.

[0013] In a feasible implementation, a moving assembly is further arranged between the support and the bearing assembly, and the moving assembly is used for adjusting the distance between the bearing assembly and the base plate.

[0014] In a feasible implementation, the moving assembly comprises a sliding block and a sliding rail, the sliding rail is fixedly connected with the support, the sliding block is fixedly connected with the bearing assembly, and the sliding block is in sliding connection with the sliding rail.

[0015] In a feasible implementation, each test probe comprises two sub-probes arranged in pairs, and the test plate is further provided with a plurality of adjusting pieces, each sub-probe is fixedly connected with the adjusting piece, and the adjusting piece is in sliding connection with the test plate.

[0016] The utility model has the advantages that:

[0017] The battery capacity testing device provided by the embodiment of the application has the following advantages: the base plate is provided with a plurality of detection stations, each detection station can detect the battery, the capacity detection efficiency of the battery is improved, the test plate is automatically driven by the driving mechanism to approach or move away from the base plate, the test probe on the test plate approaches or moves away from the test end of the battery for capacity detection, the battery is convenient to load and unload, the labor cost is saved, the capacity detection efficiency of the battery is greatly improved, and the battery capacity testing device is conducive to wide application.

[0018] It should be understood that the general description and detailed description below are only exemplary and explanatory, and do not limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated in the specification include exemplary embodiments consistent with the present application and serve to explain the principles of the present application, and do not constitute an improper limitation of the present application, together with the specification.

[0020] Figure 1 is an exemplary perspective structural schematic diagram of a battery capacity test device provided by some embodiments of the present application;

[0021] Figure 2 is Figure 1 is a perspective structural schematic diagram of a battery capacity test device after removing some components shown in

[0022] Figure 3 is Figure 2 is another perspective structural schematic diagram of a battery capacity test device shown in

[0023] Figure 4 is Figure 2 is an enlarged view of A in

[0024] Reference numerals in the drawings:

[0025] 100-battery capacity test device;

[0026] 110-bottom plate;

[0027] 120-test plate; 121-test probe, 122-adjusting plate, 123-through hole;

[0028] 130-driving mechanism; 1311-driving rod, 1312-connecting rod, 1313-pull rod, 1314-fixing piece, 1315-handle; 132-guiding assembly, 1321-guide column, 1322-guide sleeve;

[0029] 140-support, 141-vertical plate;

[0030] 150-bearing assembly, 151-bearing plate;

[0031] 160-limiting assembly;

[0032] 170-moving assembly, 171-sliding block, 172-sliding rail;

[0033] 200-battery. DETAILED DESCRIPTION

[0034] For the above purposes, features and advantages of the present application to be more apparent and understandable, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the above, below, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0038] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Please refer to Figures 1 to 4The embodiment of the application provides a battery capacity test device 100, which is used for clamping a plurality of batteries 200 and performing capacity test on each battery 200. The battery capacity test device 100 comprises a bottom plate 110, a test plate 120 and a driving mechanism 130. A first surface of the bottom plate 110 is provided with four detection stations, each of which can carry and fix one battery 200. The test plate 120 is arranged on one side of the first surface of the bottom plate 110, and the test plate 120 is provided with test probes 121 corresponding to the number of detection stations. The driving mechanism 130 is connected with the test plate 120. The driving mechanism 130 is used for driving the test plate 120 to be close to or away from the bottom plate 110, so that the test probes 121 on the test plate 120 are close to or away from the test end of the battery 200.

[0040] The battery capacity test device 100 provided by the embodiment of the application is provided with a plurality of detection stations on the bottom plate 110, each detection station can detect the battery 200, the capacity detection efficiency of the battery 200 is improved, meanwhile, the test plate 120 is automatically driven by the driving mechanism 130 to be close to or away from the bottom plate 110, so that the test probes 121 on the test plate 120 are close to or away from the test end of the battery 200 for capacity detection, the battery 200 is convenient to load and unload, the labor cost is saved, the capacity detection efficiency of the battery 200 is greatly improved, and the battery capacity test device 100 is conducive to wide application.

[0041] In a feasible implementation, the battery capacity test device 100 further comprises a support 140 and a bearing assembly 150. The support 140 is fixedly connected with the bottom plate 110, the bearing assembly 150 is movably connected with the support 140, a fixed end of the driving mechanism 130 is fixedly connected with the bearing assembly 150, and a movable end of the driving mechanism 130 is fixedly connected with the test plate 120. The support 140 can be arranged to firmly fix the bottom plate 110, the test plate 120 and the driving mechanism 130, so that the battery capacity test device 100 can be kept stable during work, displacement or damage caused by vibration or external force is avoided, the overall equipment is improved, the battery capacity test device 100 is compact in structure and small in occupied space, and is convenient to transport and move.

[0042] In a feasible implementation, the support 140 includes two vertical plates 141 arranged in pairs along the first direction X. The bearing assembly 150 includes two bearing plates 151 arranged in pairs along the first direction X. Each vertical plate 141 is fixedly connected to the bottom plate 110 and connected to one bearing plate 151. In order to better illustrate the present application, a rectangular coordinate system is established with the first face of the bottom plate as the XY plane, the Z axis being perpendicular to the XY plane, the direction parallel to the X axis being the first direction X, the direction parallel to the Y axis being the second direction Y, and the third direction Z being perpendicular to the XY plane. In this way, by arranging the vertical plates and the bearing plates in pairs, the structural stability of the battery capacity grading testing device can be improved, and the operation stability of the driving mechanism when driving the test plate to move closer to or farther away from the bottom plate can also be improved. Further, the support 140 can further include a reinforcing plate connecting the two vertical plates 141 and the bottom plate 110. The structural strength of the battery capacity grading testing device can be further improved, and the stability of the operation of the battery capacity grading testing device can be improved. In addition, by arranging the support 140, the battery capacity grading testing device can also have a height adjustment function. The support 140 is movably connected to the bearing assembly, and the height between the bearing plate 151 and the bottom plate 110 can be adjusted as needed to ensure that the battery capacity grading testing device 100 is in the best working position, or the height can be adjusted according to different specifications of the battery 200 to be tested to meet the capacity grading detection requirements of batteries 200 of multiple specifications. In addition, the support 140 and the bearing assembly 150 are simple in design and easy to install, can quickly fix the equipment, reduce installation time and cost, and make maintenance and repair of the equipment easier. Further, the support 140 and the bearing assembly 150 can be made of rust-proof treated or stainless steel materials, which are suitable for humid or corrosive environments. Further, the support 140 can be fixed on the bottom plate 110 by welding, which is suitable for permanent fixation. The support 140 can also be fixed to the bottom plate 110 by bolts, which is convenient for disassembly and replacement.

[0043] In a feasible implementation, the support 140 and the bearing assembly 150 are further provided with a moving assembly 170. The moving assembly 170 is used to adjust the distance between the bearing assembly 150 and the bottom plate 110.

[0044] In one possible implementation, the moving assembly 170 includes a slider 171 and a slide rail 172. The slide rail 172 is fixedly connected to the bracket 140, and the slider 171 is fixedly connected to the bearing assembly 150 and slidably connected to the slide rail 172. Specifically, the length direction of the slide rail 172 is arranged along the third direction Z on the bracket 140, the slider 171 is slidably connected to the slide rail 172 along the third direction Z, and the slider 171 is fixedly connected to the bearing plate 151. The third direction Z is perpendicular to the first direction X and the second direction Y. In this way, the low friction between the slider 171 and the slide rail 172 can significantly reduce energy loss and improve the efficiency of the system. The precise fit of the slider 171 and the slide rail 172 can achieve high-precision linear motion and ensure accurate movement of the moving components on the predetermined path. The slider 171 and the slide rail 172 have good repeatability, which can ensure consistent position and force of each movement and improve the consistency and quality of detection. The low friction and smooth surface of the slider 171 and the slide rail 172 can reduce vibration during movement and improve the stability and reliability of the system. The slider 171 and the slide rail 172 are designed to withstand large vertical and horizontal loads and are suitable for heavy load and high rigidity requirements. The slider 171 and the slide rail 172 are usually designed to be compact and occupy less space, which is suitable for use in limited space working environment. The slider 171 and the slide rail 172 have simple structure, easy installation, easy cleaning and maintenance, which reduces downtime and maintenance cost. The slider 171 and the slide rail 172 are made of rust-proof treatment or stainless steel material, which is suitable for humid or corrosive environment.

[0045] In a feasible implementation, the driving mechanism 130 includes two toggle clamps arranged in pairs along the first direction X. Each of the toggle clamps includes a driving rod 1311, a connecting rod 1312, a push-pull rod 1313, and a fixing member 1314. The first end of the driving rod 1311 is hinged to the first end of the push-pull rod 1313, and the second end of the push-pull rod 1313 is fixedly connected to the test plate 120. The fixing member 1314 is sleeved outside the push-pull rod 1313 and is fixedly connected to the carrier plate 151. The first end of the connecting rod 1312 is fixedly hinged to the fixing member 1314, and the second end of the connecting rod 1312 is hinged to the second end of the driving rod 1311. Such a driving mechanism 130 can realize the pushing and pulling of the movable end through a simple pushing action, thereby realizing the approach and departure of the test plate 120 and the bottom plate 110. The driving mechanism 130 utilizes the principle of leverage, and the operator can generate a larger pushing and pulling force with a smaller force, thereby reducing physical exertion. The driving mechanism 130 is a push-pull type toggle clamp. The driving mechanism 130 of such a structure is compact in design and is suitable for use in a working environment with limited space. The structure is simple and easy to install, and the carrier plate 151 and the test plate 120 can be easily fixed. Through the principle of leverage, a larger extension force can be generated. The push-pull type toggle clamp has good repeatability and can ensure the accuracy of the height between the test plate 120 and the carrier plate 151 each time, thereby improving the consistency and quality of the battery capacity test. The two toggle clamps are arranged in pairs and drive the test plate to move from both sides along the first direction X. The two-sided driving can more evenly distribute the force applied to the test plate, thereby reducing deformation or stress concentration caused by uneven force on one side, thereby protecting the test plate and ensuring the movement accuracy and stability of the test plate. Further, the toggle clamps can be made of stainless steel, galvanized steel, or other high-strength materials, which have high durability and wear resistance. In addition, the toggle clamps have a simple structure and are easy to maintain and maintain, thereby prolonging the service life. Further, the push-pull type toggle clamp can also have a self-locking function and is not easy to loosen after being pushed and pulled to the position, thereby ensuring the stability and safety of the carrier plate 151 and the test plate 120 during the battery 200 capacity test. In addition, if a component is damaged, the toggle clamp can be replaced individually without the need for overall replacement, thereby reducing maintenance costs. Further, the handle 1315 part of the toggle clamp is designed with anti-slip and shock absorption functions, thereby improving the comfort of the operator.

[0046] In a feasible implementation, the driving mechanism can also include only one toggle clamp. The toggle clamp can be arranged on one side or in the middle of the test plate along the first direction X or the second direction Y and can drive the test plate to approach or depart from the bottom plate. The single toggle clamp can save costs and simplify the structure of the equipment.

[0047] In a feasible implementation, the driving mechanism 130 can also be other structures that can push and pull the test plate 120 to move, such as a pneumatic cylinder drive, a hydraulic cylinder drive, an electric push rod drive, a lead screw drive, a rack and pinion drive, a ball screw drive, a hydraulic motor drive, etc. The specific structure of the driving mechanism 130 is not described here.

[0048] In a feasible implementation, the second end of the push-pull rod 1313 is fixedly connected with the test plate 120. Specifically, a through hole 123 is formed on the carrier plate 151, and the second end of the push-pull rod 1313 penetrates through the through hole 123 and is fixedly connected with the bottom surface of the test plate 120. The fixed connection mentioned here can be achieved by screwing the push-pull rod 1313 to the carrier plate 151. This connection method is simple, firm, and convenient for installation and maintenance. The bottom surface fixation can better disperse the force exerted by the push-pull rod 1313, reducing the bending and deformation of the plate. The bottom surface fixation can enhance the structural rigidity of the plate, making it more stable when subjected to external forces. The bottom surface fixation can reduce the vibration of the plate during movement, improving the stability of the system. The push-pull rod 1313 fixed at the bottom of the plate can hide the installation, making the appearance more neat and beautiful. The push-pull rod 1313 fixed at the bottom is usually easier to check and maintain because it is not obscured by other components. The bottom surface fixation can reduce the direct contact between the push-pull rod 1313 and the surface of the plate, reducing wear. The push-pull rod 1313 fixed at the bottom is less likely to be accidentally touched, reducing the risk of accidents. The push-pull rod 1313 fixed at the bottom reduces the potential threat to the operator, improving safety. The bottom surface fixation installation is completed, and the later maintenance and use are more convenient. At the same time, the through hole 123 can also play a certain guiding and fixing role.

[0049] In a feasible implementation, the second end of the push-pull rod 1313 can also be connected with the bottom surface, top surface, or side edge of the test plate 120, which is not described here.

[0050] In a feasible implementation, the driving mechanism 130 further includes at least one guide assembly 132, which is arranged between the carrier assembly 150 and the test plate 120. Specifically, the driving mechanism 130 includes four guide assemblies 132. Two guide assemblies 132 are arranged between each carrier plate 151 and the test plate 120. In other words, two guide assemblies 132 are arranged on each carrier plate 151. The guide assembly 132 is used to guide the movement direction of the test plate 120 towards or away from the bottom plate 110. The guide assembly 132 is used in mechanical systems to ensure that moving parts move accurately along a predetermined path and direction. By arranging two guide assemblies 132 on each carrier plate 151, the movement of the test plate in multiple directions can be more evenly guided, improving the running accuracy and stability of the battery capacity test device.

[0051] In one possible implementation, each guide assembly 132 includes a guide post 1321 and a guide sleeve 1322. The guide post 1321 is fixedly connected to the test board 120 at a first end thereof, and the guide sleeve 1322 is fixedly connected to the carrier plate 151 and is sleeved outside a second end of the guide post 1321, and the guide sleeve 1322 is in clearance fit with the guide post 1321.

[0052] In one possible implementation, in addition to the guide post 1321 and the guide sleeve 1322, the guide assembly 132 can also be other structures, for example, a linear guide rail and a sliding block 171, a linear bearing, a linear module, a ball screw, a hydraulic and pneumatic guide assembly 132, a sliding guide rail, a roller guide rail, a needle bearing, an elastic guide assembly 132, etc. The guide function can also be achieved through these common guide structures, which will not be described here.

[0053] In one possible implementation, the battery capacity test device can be provided with one or more detection stations, and each detection station can carry and fix at least one battery. When each detection station can carry and fix one battery, the number of test probes provided on the test board is the same as the number of batteries to be tested, that is, the number of detection stations. When each detection station can carry and fix more than one battery, the number of test probes provided on the test board is the same as the number of batteries to be tested, that is, the corresponding multiple test probes are more than the number of detection stations. For example, when each detection station can carry and fix two batteries, the number of test probes on the test board is twice the number of test stations; when each detection station can carry and fix three batteries, the number of test probes on the test board is three times the number of test stations, and so on. Further, when each detection station can fix more than one battery, the batteries on each detection station can be placed continuously or can be provided with a spacer between adjacent batteries. When the batteries on a detection station are placed with intervals, the position of the spacer can be adjusted to adapt to different specifications of batteries, thereby improving the flexibility and compatibility of the battery capacity test device.

[0054] In an implementation, the battery capacity testing device 100 further comprises a limiting assembly 160. The limiting assembly 160 comprises a plurality of limiting plates. The plurality of limiting plates are uniformly arranged along the first direction X on the first surface of the bottom plate 110, and the length direction of the limiting plates is along the second direction Y. The detection station is formed between two adjacent limiting plates, and the battery 200 is fixed between the limiting plates. The limiting assembly 160 can set the maximum and minimum positions of the moving parts, prevent them from exceeding the predetermined range, and avoid equipment damage or failure caused by excessive movement. By limiting the stroke, the key parts of the equipment can be protected from overload or impact damage. The limiting assembly 160 can prevent accidents caused by out-of-control moving parts and improve the safety of operation. The limiting assembly 160 can ensure that the moving parts stop at the predetermined position, improve the motion accuracy and repeatability of the system. By precise limiting, the cumulative error in the movement process can be reduced, and the machining and assembly accuracy can be improved.

[0055] In an implementation, the bottom plate 110 can also have a plurality of recesses, and the battery 200 is accommodated in the recesses. Such recess structure can also form a detection station to carry and limit the battery 200.

[0056] In an implementation, each test probe 121 comprises two sub-probes arranged in pairs along the second direction Y. The test plate 120 is also provided with a plurality of adjusting members. Each sub-probe is fixedly connected with the adjusting member, and the adjusting member is slidingly connected with the test plate 120. The adjusting plate 122 can provide fine adjustment function, allowing the operator to accurately adjust the position of the component within a certain range, and ensure that it reaches the optimal working state. The adjusting plate 122 has good repeatability, which can ensure that the position after each adjustment is consistent, and improve the reliability and consistency of the system. The adjusting plate 122 can be adjusted according to different working conditions and requirements, and is suitable for various working environments and application scenarios. Through accurate adjustment, the cumulative error of the moving parts can be reduced, and the overall accuracy of the system can be improved. The adjusting plate 122 can be used for aligning and correcting the position of the component, and ensuring the accurate cooperation between components. The adjusting plate 122 is usually designed to be simple and easy to install, and can be quickly fixed on the equipment. The adjustability of the adjusting plate 122 makes the debugging of the equipment more convenient, and reduces the debugging time and cost. The adjusting plate 122 can adapt to batteries 200 of different sizes and specifications, and ensure the accurate positioning of the batteries 200 in the capacity testing process.

[0057] In one feasible implementation, the adjusting plate 122 can be movably connected with the test plate 120 by screw adjustment. A threaded pair is installed on the adjusting plate 122, and a moving sliding groove is arranged on the test plate 120. The position is fixed or released by rotating a screw rod or a nut, and then the position is adjusted to adjust the position of the test probe 121 to adapt to the test of batteries 200 of different specifications.

[0058] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0059] The above-described embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the utility model, and these belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A battery capacity grading test device, characterized by, The battery capacity testing device comprises: a bottom plate, a first surface of the bottom plate is provided with a plurality of detection stations for carrying and fixing batteries; a test plate is arranged on one side of the first surface of the bottom plate and is provided with test probes corresponding to the number of detection stations; a driving mechanism is connected with the test plate and is used to drive the test plate to approach or move away from the detection stations.

2. The battery capacity testing device according to claim 1, wherein The battery capacity testing device further comprises a support and a bearing assembly, the support is fixedly connected with the bottom plate, and the bearing assembly is adjustably arranged on the support; the fixed end of the driving mechanism is fixedly connected with the bearing assembly, and the movable end of the driving mechanism is fixedly connected with the test plate.

3. The battery individual capacity testing device according to claim 2, wherein The driving mechanism comprises at least one toggle clamp, the toggle clamp comprises a driving rod, a connecting rod, a push-pull rod and a fixing piece, wherein the driving rod has a first end, a second end and a third end, the first end of the driving rod is hingedly connected with the first end of the push-pull rod, and the second end of the push-pull rod is fixedly connected with the test plate; the fixing piece is sleeved outside the push-pull rod and is fixedly connected with the bearing assembly, the first end of the connecting rod is fixedly hingedly connected with the fixing piece, and the second end of the connecting rod is hingedly connected with the second end of the driving rod.

4. The battery individual capacity testing device according to claim 3, wherein The bearing assembly is provided with a through hole, the second end of the push-pull rod penetrates through the through hole and is fixedly connected with the test plate.

5. The battery individual capacity testing device according to claim 2, wherein The driving mechanism further comprises at least one guide assembly, the guide assembly is arranged between the bearing assembly and the test plate and is used to guide the moving direction of the test plate towards or away from the bottom plate.

6. The battery capacity testing device according to claim 5, wherein The guide assembly comprises a guide column and a guide sleeve, the first end of the guide column penetrates through the bearing assembly and is fixedly connected with the test plate, the guide sleeve is fixedly connected with the bearing assembly and is sleeved outside the second end of the guide column, and the guide sleeve is gap-fitted with the guide column.

7. The battery capacity testing device of claim 2, wherein, The battery capacity testing device further comprises a limiting assembly, the limiting assembly comprises a plurality of limiting plates, the limiting plates are uniformly arranged on the first surface of the bottom plate along a first direction, the length direction of each limiting plate is arranged along a second direction, the detection station is formed between adjacent two limiting plates, and the first direction is perpendicular to the second direction.

8. The battery capacity testing device of claim 2, wherein, A moving assembly is further arranged between the support and the bearing assembly, and the moving assembly is used to adjust the distance between the bearing assembly and the bottom plate.

9. The battery capacity testing device of claim 8, wherein, The moving assembly comprises a slider and a slide rail, the slide rail is fixedly connected with the support, the slider is fixedly connected with the bearing assembly ， And the slider is in sliding connection with the slide rail.

10. The battery lot testing device of claim 1, wherein, Each test probe comprises a pair of two sub-probes, the test plate is further provided with a plurality of adjusting pieces, each sub-probe is fixedly connected with the adjusting piece, and the adjusting piece is slidingly connected with the test plate.

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