Battery testing device

Abstract

The invention is suitable for the technical field of batteries, and provides a battery testing device. The battery testing device comprises a bracket, a probe module, a first driving mechanism and a bearing part, the probe module is installed on the support in a liftable mode, and at least part of the first driving mechanism can move relative to the support; the bearing part is used for bearing a standard resistor, is connected with the first driving mechanism, and can be driven by the first driving mechanism to reciprocate between a first testing position and a first avoiding position relative to the bracket; the standard resistor can be in contact conduction with the probe module at the first test position, and the bearing piece and the standard resistor avoid the probe module and the battery monomers at the first avoiding position. According to the battery testing device provided by the invention, the calibration accuracy of the battery testing device can be improved.

Description

Technical Field

[0001] This application belongs to the technical field of battery production, and particularly relates to a battery testing device. Background Art

[0002] During the detection process by the battery testing device, in order to ensure the accuracy and effectiveness of the detection by the battery testing device, it is necessary to calibrate the battery testing device at fixed intervals. Before calibration, a battery model (also called a standard resistor) is generally made according to the battery cells to be detected. During calibration, an employee manually places the above-mentioned standard resistor into the battery testing device at fixed intervals for detection, and makes a comparison judgment through the measured values to detect whether the battery testing device is working properly.

[0003] By manually placing the standard internal resistance, it is impossible to ensure that the placement position is the same each time, and it cannot be ensured that the placement position can stably and accurately contact the probe. Summary of the Invention

[0004] In view of the above problems, this application provides a battery testing device, aiming to improve the calibration accuracy of the battery testing device.

[0005] In a first aspect, an embodiment of this application provides a battery testing device, including a bracket, a probe module, a first driving mechanism, and a carrier; the probe module is installed on the bracket in a liftable manner, and at least part of the first driving mechanism can move relative to the bracket; the carrier is used to carry a standard resistor, the carrier is connected to the first driving mechanism, and can reciprocate relative to the bracket between a first test position and a first avoidance position under the drive of the first driving mechanism; the standard resistor can be in contact conduction with the probe module at the first test position, and the carrier and the standard resistor are arranged to avoid the probe module and the battery cell at the first avoidance position.

[0006] The battery testing device provided by the embodiment of this application is provided with a carrier and a first driving mechanism. The carrier can be used to carry a standard resistor, and the first driving mechanism can control the carrier and the standard resistor to accurately reciprocate between the first test position and the first avoidance position, so that when multiple calibrations are required, the relative positions of the standard resistor and the probe module are fixed when they are in contact conduction at the first test position each time. Furthermore, the calibration data can be accurate during multiple calibrations, and thus the calibration accuracy of the battery testing device can be improved.

[0007] In some possible implementation manners, the battery testing device further includes a first guiding structure, the first guiding structure includes a first guiding member and a second guiding member, the first guiding member is fixedly arranged relative to the bracket, the second guiding member is arranged on the carrier, and the second guiding member is slidably connected to the first guiding member along a first direction, and the first direction is set at an angle to the lifting direction of the probe module.

[0008] The setting of the first guiding structure enables the carrier to move relative to the bracket along a preset moving path, ensuring that the moving trajectory of the carrier is consistent each time.

[0009] In some possible implementation manners, the first direction is perpendicular to the lifting direction, which is convenient for design.

[0010] In some possible implementation manners, the battery testing device further includes a battery conveying mechanism for conveying battery cells. The battery conveying mechanism is spaced apart from the probe module and the carrier respectively in the lifting direction.

[0011] The setting of the battery conveying mechanism can improve the conveying efficiency of battery cells to a certain extent, thereby improving the detection efficiency of battery cells to a certain extent.

[0012] In some possible implementation manners, the battery testing device further includes a blocking mechanism. The blocking mechanism has a blocking member that can reciprocate between a first position and a second position. In the first position, the blocking member can limit at least part of the battery cells to the second testing position. In the second testing position, the battery cells can be in contact and conduct with the probe module. In the second position, the blocking member is arranged to avoid the battery cells.

[0013] In this embodiment, the setting of the blocking mechanism enables the battery conveying mechanism to operate without stopping during the detection of some battery cells. When multiple groups of battery cells are sequentially arranged on the battery conveying mechanism along the conveying direction of the battery conveying mechanism, multiple groups of battery cells can be quickly detected in sequence, which helps to improve the efficiency of battery detection operations.

[0014] In some possible implementation manners, the blocking mechanism further includes a second driving mechanism. At least part of the second driving mechanism is fixedly arranged relative to the bracket, and the second driving mechanism is connected to the blocking member. The second driving mechanism is used to drive the blocking member to reciprocate between the first position and the second position.

[0015] The setting of the second driving mechanism, on the one hand, enables the blocking member to move relative to the bracket along a preset moving path, ensuring that the moving trajectory of the blocking member is consistent each time. Compared with manual control of the movement, it can reduce the risk of operation errors caused by human factors. On the other hand, when the second driving mechanism uses a non-manual driving power source, it can improve the detection efficiency of the battery testing device.

[0016] In some possible implementation manners, the second driving mechanism includes a linear driving component, a third guiding member, and a fourth guiding member. The third guiding member is fixedly arranged relative to the bracket. The fourth guiding member is connected to the blocking member and is slidably connected to the third guiding member. The linear driving component is connected to the blocking member and / or the fourth guiding member.

[0017] The second driving mechanism not only includes a linear driving component, but also includes a third guiding member and a fourth guiding member, which can enable the blocking member to move relative to the bracket along a preset moving path, and the arrangement of the third guiding member and the fourth guiding member can also play a certain supporting role for the blocking member, reducing the risk of shaking during the movement of the blocking member and also reducing the risk of loosening of the connection between the blocking member and the linear driving component.

[0018] In some possible implementation manners, the battery testing device further includes a second guiding structure, at least a part of the second guiding structure is disposed between the battery conveying mechanism and the probe module in the lifting direction, and the second guiding structure is used to guide the battery cell to reach the second testing position according to a preset placement manner, and the blocking member is at least disposed to avoid the second guiding structure at the second position.

[0019] The arrangement of the second guiding structure enables the battery cell to reach the second testing position according to a preset placement manner and stably contact and conduct with the probes in the probe module, so that the detection result can be accurate.

[0020] In some possible implementation manners, the second guiding structure includes a fifth guiding member and rolling members. The fifth guiding member is arranged along a first direction, there are two groups of the fifth guiding members, the two groups of the fifth guiding members are spaced apart along a third direction and form a channel for the battery cell to pass through. The rolling members are disposed on the fifth guiding member and are used to rollingly contact the battery cell. The third direction is perpendicular to both the first direction and the lifting direction.

[0021] The second guiding structure may only include the fifth guiding member and the rolling members, and may also include other structures according to the usage needs, such as limiting members, fixing members, etc., which can be specifically determined according to the usage needs. No matter how it is arranged, the second guiding structure at least includes the fifth guiding member and the rolling members, so that rolling contact can be achieved between the second guiding structure and the battery cell, the friction between the two is small, and the battery cell can reach the second testing position according to a preset placement manner and stably contact and conduct with the probes in the probe module, achieving multiple benefits at one stroke.

[0022] In some possible implementation manners, one side of the blocking member facing the battery conveying mechanism is located between the second guiding structure and the bearing member in the lifting direction.

[0023] In this way, on the basis that the second direction is perpendicular to the lifting direction, the blocking member can avoid the second guiding structure during the movement between the first position and the second position and will not interfere with the second guiding structure.

[0024] In some possible implementation manners, the probe module includes a support frame and a plurality of probe groups. The support frame can move up and down relative to the bracket, and the plurality of probe groups are sequentially disposed on the support frame along the third direction.

[0025] The probe module adopts the solution provided by this embodiment, so that the same probe module has multiple probe groups, and the simultaneous detection of multiple battery cells or multiple standard resistors can be realized, which helps the mass production of battery cells.

[0026] In some possible implementation manners, there are multiple probe modules, and the multiple probe modules are arranged in sequence along the third direction.

[0027] Adopting the solution provided by this embodiment, there are multiple probe modules, which can enable the battery testing device to simultaneously detect multiple battery cells, contributing to the mass production of battery cells.

[0028] In some possible implementation manners, the probe group includes a positive probe and a negative probe, and the distance between the positive probe and the negative probe in the same probe group is adjustable.

[0029] This can make the distance between the positive probe and the negative probe in the probe group adjustable according to the distance between the positive electrode post and the negative electrode post in different battery cells, so that the battery testing device can be applicable to the detection of different battery cells, and has a wide application range.

[0030] In some possible implementation manners, there are n probe groups, where n is greater than or equal to 2, and an identification resistor is connected in parallel between the positive probe and the negative probe of the same probe group in at least n - 1 probe groups, and the resistance values of the identification resistors corresponding to different probe groups are different.

[0031] The setting of the identification resistor can enable the user to quickly discover the problematic battery cells, which helps to improve the detection efficiency and production efficiency.

[0032] In some possible implementation manners, there are multiple second guiding structures, and the second guiding structures are arranged corresponding to the probe groups.

[0033] There are multiple second guiding structures, and the second guiding structures are arranged corresponding to the probe groups, which can enable the battery cells at different positions to move to the lower part of the probe group according to the preset placement manner, so as to stably contact and conduct with the probe group, making the detection result accurate.

[0034] In some possible implementation manners, the blocking member includes a blocking portion and a connecting portion, there are multiple blocking portions, the blocking portions are arranged corresponding to the probe groups, and the blocking portions are connected to the linear driving component and / or the fourth guiding member through the connecting portion.

[0035] Adopting the solution provided by this embodiment for the blocking member can make the structure of the blocking member simple and facilitate installation.

[0036] In some possible implementation manners, the first position and the second position are arranged along the second direction, and the second direction forms an angle with both the first direction and the lifting direction.

[0037] There are many components in the battery testing device. The second direction is set at an angle to both the first direction and the lifting direction, and there can be various setting methods, which can be specifically determined according to the structure and layout space of the battery testing device. This can reduce the risk of interference between the moving blocking member and other components in the battery testing device, and help improve the overall space utilization rate of the battery testing device.

[0038] In some possible implementation manners, the second direction is perpendicular to the lifting direction and is set at an acute angle or an obtuse angle to the first direction.

[0039] The perpendicular setting of the second direction to the lifting direction is convenient for design. The setting of the second direction at an acute angle or an obtuse angle to the first direction can reduce the risk of interference between the moving blocking member and other components in the battery testing device, and help improve the overall space utilization rate of the battery testing device.

[0040] In some possible implementation manners, the battery testing device further includes a lifting mechanism. The lifting mechanism is arranged on the bracket, and the probe module is movably connected to the bracket through the lifting mechanism.

[0041] The setting of the lifting mechanism enables the probe module to move relative to the bracket along a preset moving path on the one hand, so that the moving trajectory of the probe module is consistent each time. Compared with manual control of the movement, it can reduce the product detection differences caused by human factors. On the other hand, when the lifting mechanism adopts a non-manual driving power source, the detection efficiency of the battery testing device can be improved.

[0042] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specifically gives the specific implementation manners of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of this application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 is a schematic structural diagram of the battery testing device provided by some embodiments of this application from the first perspective; Figure 2 is a schematic structural diagram of the battery testing device provided by some embodiments of this application from the second perspective; Figure 3 is a schematic top view structural diagram of the combination structure of the carrier and the first guiding structure in the battery testing device provided by some embodiments of this application; Figure 4 Along Figure 3 The sectional view structure diagram along the A-A line in it; Figure 5 The structure diagram of the blocking mechanism in the battery testing device provided by some embodiments of the present application; Figure 6 The upward view structure diagram of the partial structure of the blocking mechanism in the battery testing device provided by some embodiments of the present application; [[ID=1…]] Figure 7 The front view structure diagram of the combined structure of the bracket, lifting mechanism and probe module in the battery testing device provided by some embodiments of the present application; Figure 8 The front view structure diagram of the probe module in the battery testing device provided by some embodiments of the present application; Figure 9 The three-dimensional structure diagram of the probe module in the battery testing device provided by some embodiments of the present application; Figure 10 The partial circuit schematic diagram of the battery testing device provided by some embodiments of the present application.

[0044] The reference numerals in the specific embodiments are as follows: 10. Bracket; 11. Battery cell; 12. Identification resistor; 20. Probe module; 21. Support frame; 22. Probe group; 221. Positive probe; 222. Negative probe; 30. First driving mechanism; 31. Carrier; 32. Standard resistor; 33. Lifting mechanism; 34. Battery conveying mechanism; 40. First guiding structure; 41. First guiding member; 42. Second guiding member; 50. Blocking mechanism; 51. Blocking member; 511. Blocking portion; 512. Connecting portion; 52. Second driving mechanism; 521. Linear driving assembly; 522. Third guiding member; 523. Fourth guiding member; 60. Second guiding structure; 61. Fifth guiding member; 62. Rolling member; 70. NG resistor; X. First direction; Z. Lifting direction; Y1. Second direction; Y2. Third direction. Specific embodiments

[0045] Hereinafter, embodiments of the technical solutions of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality of" is more than two, unless otherwise specifically defined.

[0048] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0049] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0050] In the description of the embodiments of this application, the term "a plurality of" refers to more than two (including two). Similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).

[0051] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0052] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0053] If there is no special instruction, all the embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0054] The manufacturing of battery cells is a complex multi-process precision machining process. During the manufacturing process of battery cells, some key processes (such as winding, ultrasonic tab welding, top cover welding, etc.) may cause contamination of the electrode assembly in the battery cell by metal debris, dust, etc., or damage the separator in the battery cell due to improper baking process parameters or mechanical stress. These factors will all lead to abnormal internal resistance of the battery cell (such as low or high internal resistance), thereby affecting the reliability and performance of the battery cell. Therefore, in order to ensure product quality, it is necessary to use a battery test device to detect the internal resistance of the battery in multiple production links to identify and eliminate defective products (such as short-circuit products).

[0055] During the detection process by the battery test device, in order to ensure the accuracy and effectiveness of the detection by the battery test device, it is necessary to calibrate the battery test device at fixed intervals. Before calibration, a battery model (also called a standard resistor) is generally made according to the battery cell to be detected. During calibration, an employee manually places the above standard resistor into the battery test device for detection at fixed intervals, and makes a comparison and judgment through the measured value to detect whether the battery test device is working properly.

[0056] By manually placing the standard internal resistance, it is impossible to ensure that the placement position is the same each time, and it cannot ensure that the placement position can stably and accurately contact the probe.

[0057] To improve the above problems, an embodiment of the present application provides a battery test device. The battery test device is provided with a carrier and a first driving mechanism. The carrier can be used to carry the standard resistor, and the first driving mechanism can control the carrier and the standard resistor to reciprocate accurately between a first test position and a first avoidance position, so that when multiple calibrations are required, the relative positions of the standard resistor and the probe module are fixed each time when they are in contact and conduct at the first test position, thereby enabling the calibration data to be accurate during multiple calibrations, and further improving the calibration accuracy of the battery test device.

[0058] Please refer toFigure 1 and Figure 2 , Figure 1 is a schematic structural view of a battery testing device provided by some embodiments of the present application from a first perspective; Figure 2 is a schematic structural view of a battery testing device provided by some embodiments of the present application from a second perspective; Some embodiments of the present application provide a battery testing device. The battery testing device includes a bracket 10, a probe module 20, and a first driving mechanism 30. The probe module 20 is installed on the bracket 10 in a liftable manner. The first driving mechanism 30 includes a carrier 31 and a first driving mechanism 30 connected to each other. The carrier 31 is used to carry a standard resistor 32. The first driving mechanism 30 is used to drive the carrier 31 to reciprocate between a first test position and a first avoidance position. The standard resistor 32 can be in contact and conduct with the probe module 20 at the first test position. The carrier 31 avoids the probe module 20 at the first avoidance position.

[0059] The bracket 10 is a support mechanism of the battery testing device and is used to carry structures such as the probe module 20.

[0060] The core function of the probe module 20 is to physically contact and conduct the object to be measured (the battery cell 11 to be detected) and conduct signals. The probe module 20 has at least probes, and one or more groups of probes can be provided, which can be determined according to actual use needs. The probes, as conductive media, connect the detection device and the electrodes of the battery cell 11, transmit the charge and discharge current, and are used to measure parameters such as the internal resistance of the battery cell 11.

[0061] The probe module 20 is installed on the bracket 10 in a liftable manner, and there are various implementation manners. For example, the probe module 20 can be slidably arranged on the bracket 10 along the height direction of the bracket 10, or can be connected to the bracket 10 through a moving mechanism. That is, the probe module 20 can be directly movably connected to the bracket 10, or can be indirectly movably connected to the bracket 10 through other connecting members. The lifting direction Z of the probe module 20 is generally the height direction of the bracket 10, or can be set at an acute angle (such as 5°, 10°, etc.) with the height direction of the bracket 10, which can be determined according to actual use needs.

[0062] The first driving mechanism 30 is a driving component capable of driving the carrier 31 to move relative to the bracket 10. This driving component at least includes a power source and a movable part connected to the power source. The power source can be a linear driving mechanism, such as a motor, a cylinder, an electric cylinder, a hydraulic cylinder, etc., or can be a rotational driving mechanism, such as a rotating driving arm, etc., and can be specifically determined according to the usage requirements. The power source can be an electric mechanism, a pneumatic mechanism, a hydraulic power mechanism, etc., as long as the movable part can drive the carrier 31 to reciprocate between a preset first test position and a first avoidance position under the drive of the power source. The movable part is a component connected to the carrier 31 and can move relative to the bracket 10. The movable part can be composed of one or more components, can be fixedly installed at the driving end of the power source, can also be rotatably installed at the driving end of the power source, or can be connected to the driving end of the power source in other ways, and can be specifically determined according to the usage requirements.

[0063] In addition to the power source and the movable part, the driving component can also include a connecting piece connecting the above-mentioned power source and the movable part, such as bolts, nuts, etc., according to the usage requirements, or can include other structures, such as a limiting structure, a first guiding structure, etc.

[0064] At least part of the above-mentioned power source is fixedly arranged relative to the bracket 10, including at least the following situations: First, the power source is fixedly arranged on the bracket 10; Second, the first driving mechanism 30 is separately arranged, the power source is not connected to the bracket 10, but the position of the power source is fixed relative to the bracket 10 after installation, and the distance between the two does not change during the use of the first driving mechanism 30 and the battery testing device.

[0065] The carrier 31 is a body for carrying the standard resistor 32 and can be composed of one or more components, which can be specifically determined according to the usage requirements. The carrier 31 can have various setting methods, which can be specifically determined according to the usage requirements. For example, the carrier 31 can include a plate body, a block body, etc. for supporting the standard resistor 32, can also include a fixture capable of clamping and fixing the standard resistor 32, or can include both the above-mentioned plate body, block body, etc. and the fixture. In addition, other structures can also be adopted.

[0066] The carrier 31 and the movable part can be fixedly connected, detachably connected, rotatably connected, or connected in other ways, and the connection relationship between the two can be determined according to the usage requirements.

[0067] The first test position is generally a fixed position. At this position, the electrode ends of the standard resistor 32 can be in stable contact conduction with the probes of the probe module 20 when the probe module 20 moves to a certain position along the moving path.

[0068] The first avoidance position can be a fixed position or multiple fixed positions, which can be determined according to actual usage needs. At the first avoidance position, the carrier 31 and the standard resistor 32 are arranged to avoid the probe module 20 and the battery cell 11, that is, at the first avoidance position, the carrier 31 and the standard resistor 32 cannot affect the normal movement of the probe module 20 and the normal movement of the battery cell 11, nor can they affect the normal contact conduction between the probe module 20 and the battery cell 11, that is, normal detection.

[0069] The operating principle of the battery testing device provided by the embodiment of the present application is as follows: Design the standard resistor 32 according to the parameters of the battery cell 11.

[0070] When calibration (also known as the spot-check process) is required, place the standard resistor 32 on the carrier 31, and control the carrier 31 by the first driving mechanism 30 to drive the standard resistor 32 to move to the first test position. Then control the movement of the probe module 20 until the probes in the probe module 20 are in stable contact conduction with the corresponding electrodes of the standard resistor 32. Then the tester electrically connected to the probes can obtain the resistance value of the standard resistor 32. By comparing this resistance value with the actual resistance value of the standard resistor 32, it can be determined whether the probe module 20, the tester, and the connection circuit between the probe module 20 and the tester are working properly.

[0071] If normal, the spot-check ends. If abnormal, the employee can troubleshoot until it is normal. Then control the movement of the probe module 20 to separate the probe module 20 from the standard resistor 32. Then control the carrier 31 by the first driving mechanism 30 to drive the standard resistor 32 to move to the first avoidance position. Then the battery testing device can be used normally to detect the battery cell 11. When the next calibration is required, repeat the above operations.

[0072] When detecting the battery cell 11, the carrier 31 and the standard resistor 32 are always in the first avoidance position. During detection, move the battery cell 11 below the probe module 20, and then control the movement of the probe module 20 until the probes in the probe module 20 are in stable contact conduction with the corresponding electrodes of the battery cell 11. Then the tester electrically connected to the probes can obtain the resistance value of the battery cell 11. By comparing this resistance value with the resistance value of the standard resistor 32, it can be determined whether the battery cell 11 to be tested is qualified. For example, if it is detected that the resistance value of the battery cell 11 differs greatly from the resistance value of the standard resistor 32 and exceeds the preset range (such as within 5% of the resistance value of the standard resistor 32), the battery cell 11 is determined to be a defective product; if it is detected that the resistance value of the battery cell 11 differs little from the resistance value of the standard resistor 32 and is within the preset range, the battery cell 11 is determined to be a qualified product.

[0073] The battery testing device provided by the embodiment of the present application is provided with a carrier 31 and a first driving mechanism 30. The carrier 31 can be used to carry the standard resistor 32, and the first driving mechanism 30 can control the carrier 31 and the standard resistor 32 to reciprocate accurately between the first test position and the first avoidance position. Therefore, when multiple calibrations are required, the relative positions of the standard resistor 32 and the probe module 20 are fixed each time the standard resistor 32 contacts and conducts with the probe module 20 at the first test position, so that the calibration data is accurate during multiple calibrations, and further the calibration accuracy of the battery testing device can be improved.

[0074] In addition, in the related art, the calibration operation not only requires manual placement of the standard internal resistance into the battery testing device, but also manual removal of the standard resistor 32 after the detection is completed. The operation is cumbersome and the calibration time is long. Moreover, the above operations generally need to be carried out in a shutdown state, which affects the equipment OEE (Overall Equipment Effectiveness). By using the battery testing device provided by this embodiment, the first driving mechanism 30 can adopt a non-human power mechanism such as an electric mechanism, a pneumatic mechanism, or a hydraulic mechanism, which can improve the operation rate of the calibration operation to a certain extent, thereby improving the working efficiency of the battery testing device.

[0075] Please refer to Figure 3 and Figure 4 , Figure 3 is a top view structural schematic diagram of a combined structure of a carrier and a first guiding structure in a battery testing device provided by some embodiments of the present application; Figure 4 Along Figure 3 In the cross-sectional structural schematic diagram of the A-A line in, in some embodiments, the battery testing device further includes a first guiding structure 40. The first guiding structure 40 includes a first guiding member 41 and a second guiding member 42. The first guiding member 41 is relatively fixedly arranged with the bracket 10. The second guiding member 42 is arranged on the carrier 31, and the second guiding member 42 is slidably connected with the first guiding member 41 along the first direction X. The first direction X is arranged at an angle with the lifting direction Z of the probe module 20.

[0076] The first guiding structure 40 is a structure for guiding the carrier 31 to move along the preset lifting direction Z. The first guiding structure 40 can be composed only of the first guiding member 41 and the second guiding member 42, or can further include other structures in addition to the first guiding member 41 and the second guiding member 42, such as limit blocks arranged at both ends of the first guiding member 41, connection structures connecting the first guiding member 41 and the bracket 10, etc., which can be determined according to actual use needs.

[0077] One or more first guiding members 41 may be provided, and specifically, it may be determined according to the installation position and structure of the first guiding member 41, etc. For example, if the first guiding member 41 is provided on the central axis of the carrier 31, one first guiding member 41 may be provided; if the first guiding member 41 is provided at the end of the carrier 31, then two sets of first guiding members 41 may be provided, and the two sets of first guiding members 41 are respectively provided at both ends of the carrier 31, and each set of first guiding members 41 may be composed of one or more first guiding members 41.

[0078] The first guiding member 41 may be composed of one or more components. For example, the first guiding member 41 may be composed of a guide rod, a guide rail or other components, and may also include a guide rod and a guide rail at the same time, or be composed of other components.

[0079] The second guiding member 42 may be composed of one or more components, and the specific structure may be determined according to the structure of the first guiding member 41. For example, if the first guiding member 41 is a guide rod, the second guiding member 42 may be a sleeve sleeved outside the guide rod, and the sleeve is in sliding contact with the guide rod; if the first guiding member 41 is a guide rail, the second guiding member 42 may be a slider slidably arranged on the guide rail; if the first guiding member 41 is a slider, the second guiding member 42 may be a guide rail or a guide rod slidably arranged on the guide rail.

[0080] The first direction X may be a certain direction perpendicular to the lifting direction Z of the probe module 20, or another direction in one direction, or may be a certain direction forming another angle (such as 60°, 70°, etc.) with the lifting direction Z of the probe module 20, and specifically may be determined according to the use requirements.

[0081] The setting of the first guiding structure 40 enables the carrier 31 to move relative to the bracket 10 along a preset moving path, and can make the moving trajectory of the carrier 31 consistent each time.

[0082] In some embodiments, the first direction X is perpendicular to the lifting direction Z. This is convenient for design.

[0083] Such as Figure 1 And Figure 2 As shown in the figure, in some embodiments, the battery testing device further includes a battery conveying mechanism 34. The battery conveying mechanism 34 is used to convey the battery cells 11. The battery conveying mechanism 34 is spaced from the probe module 20 and the carrier 31 respectively in the lifting direction Z.

[0084] The battery conveying mechanism 34 is used to carry the battery cells 11 and drive the battery cells 11 to move.

[0085] The battery conveying mechanism 34 may include at least one of a belt conveying mechanism, a chain conveying mechanism, and a roller conveying mechanism, and may also include other conveying mechanisms, which can be specifically determined according to the conveying requirements. In addition, according to the usage requirements, the battery conveying mechanism 34 may further include positioning structures such as jigs and trays for fixing the position of the battery cell 11.

[0086] The battery conveying mechanism 34 is spaced apart from the probe module 20 and the carrier 31 in the lifting direction Z, which means that there is a certain interval between the battery conveying mechanism 34 and the probe module 20 in the lifting direction Z of the probe module 20, and there is also a certain interval from the carrier 31. The size of this interval can be determined according to the usage requirements, and is at least greater than or equal to the height of the battery cell 11, so that the battery cell 11 does not come into contact and conduct with the carrier 31 and the probe module 20 during the movement, and the battery cell 11 can be normally conveyed.

[0087] Specifically, when the carrier 31 is disposed at the first test position, in the lifting direction Z, the probe module 20, the carrier 31, and the battery conveying mechanism 34 are sequentially spaced apart. When the carrier 31 is disposed at the first avoidance position, in the lifting direction Z, the probe module 20 and the carrier 31 are respectively spaced apart from the battery conveying mechanism 34, and the carrier 31 is located outside the moving path of the probe module 20.

[0088] The arrangement of the battery conveying mechanism 34 can, to a certain extent, improve the conveying efficiency of the battery cell 11, and thus can, to a certain extent, improve the detection efficiency of the battery cell 11.

[0089] Such as Figure 5 and Figure 6 shown, Figure 5 is a schematic structural view of the blocking mechanism in the battery testing device provided by some embodiments of the present application; Figure 6 is a schematic bottom view of a partial structure of the blocking mechanism in the battery testing device provided by some embodiments of the present application. In some embodiments, the battery testing device further includes a blocking mechanism 50. The blocking mechanism 50 has a blocking member 51. The blocking member 51 can reciprocate between a first position and a second position. In the first position, the blocking member 51 can limit at least part of the battery cells to the second test position. In the second test position, the battery cells can come into contact and conduct with the probe module 20. In the second position, the blocking member 51 is arranged to avoid the battery cells.

[0090] The blocking mechanism 50 is a mechanism that can be used to limit the battery cells to be detected to the second test position and can also avoid the battery cells so that the detected battery cells can pass through normally.

[0091] The blocking member 51 is a component in the blocking mechanism 50 that can move relative to the bracket 10 and can come into contact and conduct electricity with the battery cell. The blocking member 51 can be composed of one or more components and can be arranged in a regular structure, such as a block structure, an arc structure, etc., or can be arranged in an irregular structure.

[0092] Generally, in addition to the blocking member 51, the blocking mechanism 50 at least further includes a power mechanism for driving the blocking member 51 to reciprocate between a first position and a second position. The power mechanism can be a linear driving mechanism, a rotational driving mechanism, or other driving mechanisms, which can be specifically determined according to the usage requirements.

[0093] Both the first position and the second position can be determined according to the usage requirements. In the first position, at least a part of the blocking member 51 is in contact and conducts electricity with the battery cell to block the battery cell from continuing to move under the push of the battery conveying mechanism 34. In the second position, the blocking member 51 is not in contact and does not conduct electricity with the battery cell, and the battery cell can move under the push of the battery conveying mechanism 34.

[0094] The working principle of this embodiment is as follows: Before the battery cell to be tested moves to the second test position, the blocking mechanism 50 controls the blocking member 51 to move to the first position. In this way, when the battery cell to be tested moves to the second test position, the battery cell will stop at the second test position under the action of the blocking member 51. The second test position is located on the moving path of the probe module 20 or on the extension line of the moving path. After the battery cell stops at the second test position, the probe module 20 can be controlled to move towards the battery cell until the probes in the probe module 20 come into contact and conduct electricity with the pole posts in the battery cell. Then, the probe module 20 and the tester connected to the probe module 20 detect the resistance of the battery cell.

[0095] After the detection is completed, the probe module 20 is controlled to return to its original position, and the blocking member 51 moves to the second position. During the above operation process, the battery conveying mechanism 34 can stop and wait, or can continue to work. When the battery conveying mechanism 34 continues to work, after the blocking member 51 moves away from the battery cell, the battery cell can continue to move forward under the conveyance of the battery conveying mechanism 34.

[0096] The setting of the blocking mechanism 50 in this embodiment enables the battery conveying mechanism 34 not to need to stop and wait during the detection of some battery cells. In this way, when multiple groups of battery cells are sequentially arranged on the battery conveying mechanism 34 along the conveying direction of the battery conveying mechanism 34, the multiple groups of battery cells can be quickly detected in sequence, which helps to improve the efficiency of the battery detection operation.

[0097] Such as Figure 5 and Figure 6As shown, in some embodiments, the blocking mechanism 50 further includes a second driving mechanism 52. At least a part of the second driving mechanism 52 is fixedly arranged relative to the bracket 10, and the second driving mechanism 52 is connected to the blocking member 51. The second driving mechanism 52 is used to drive the blocking member 51 to reciprocate between a first position and a second position.

[0098] The second driving mechanism 52 can be a linear driving assembly 521, such as a motor, a cylinder, an electric cylinder, a hydraulic cylinder, etc., or a rotational driving assembly, such as a rotating driving arm, etc. It can also include both a linear driving assembly 521 and a rotational driving assembly, or include other structures, such as the first guiding structure 40, the limiting structure, etc., which can be specifically determined according to the usage requirements.

[0099] At least a part of the second driving mechanism 52 is fixedly arranged relative to the bracket 10. It can be that the second driving mechanism 52 is fixedly installed on the bracket 10, or the main body part of the second driving mechanism 52 is fixedly installed on a frame body fixed relative to the bracket 10. No matter which of the above setting methods, generally a part of the second driving mechanism 52 (such as the driving end) can move relative to the bracket 10.

[0100] The second driving mechanism 52 is connected to the blocking member 51, which means that the driving end of the second driving mechanism 52 is connected to the blocking member 51. The two can be directly connected by welding, bolt connection, etc., or can be connected by means of a connecting member, which can be specifically determined according to the usage requirements.

[0101] The setting of the second driving mechanism 52, on the one hand, enables the blocking member 51 to move relative to the bracket 10 along a preset moving path, so that the moving trajectory of the blocking member 51 is consistent each time. Compared with manual control of the movement, it can reduce the risk of operation errors caused by human factors; on the other hand, when the second driving mechanism 52 uses a non-manual driving power source, it can improve the detection efficiency of the battery testing device.

[0102] As Figure 6 shown, in some embodiments, the second driving mechanism 52 includes a linear driving assembly 521, a third guiding member 522, and a fourth guiding member 523. The third guiding member 522 is fixedly arranged relative to the bracket 10. The fourth guiding member 523 is connected to the blocking member 51, and the fourth guiding member 523 is slidably connected to the third guiding member 522. The linear driving assembly 521 is connected to the blocking member 51 and / or the fourth guiding member 523.

[0103] The linear driving assembly 521 can be an electric cylinder, a cylinder, a hydraulic cylinder, etc., which can be specifically determined according to the usage requirements.

[0104] The third guiding member 522 is fixedly arranged relative to the bracket 10. It can be that the third guiding member 522 is fixedly connected to the bracket 10, or the third guiding member 522 is fixedly installed on other frameworks fixedly arranged relative to the bracket 10.

[0105] One or more of the third guiding member 522 and the fourth guiding member 523 can be provided respectively, and specifically, it can be determined according to the installation positions and structures of the third guiding member 522 and the fourth guiding member 523, etc.

[0106] The third guiding member 522 can be composed of one or more components. For example, the third guiding member 522 can be composed of a guide rod, a guide rail or other components, and can also include a guide rod and a guide rail at the same time, or be composed of other components.

[0107] The fourth guiding member 523 can be composed of one or more components, and the specific structure can be determined according to the structure of the third guiding member 522. For example, if the third guiding member 522 is a guide rod, the fourth guiding member 523 can be a sleeve sleeved outside the guide rod, and the sleeve is in sliding contact with the guide rod; if the third guiding member 522 is a guide rail, the fourth guiding member 523 can be a slider slidably arranged on the guide rail; if the third guiding member 522 is a slider, the fourth guiding member 523 can be a guide rail or a guide rod slidably arranged on the guide rail.

[0108] The fourth guiding member 523 can be directly connected to the blocking member 51 by means of welding, plugging, clamping, etc., or can be connected to the blocking member 51 with the help of a connecting member, and specifically, it can be determined according to the usage requirements.

[0109] The linear driving assembly 521 is connected to the blocking member 51 and / or the fourth guiding member 523, including the following situations: First, the linear driving assembly 521 is connected to the blocking member 51; Second, the linear driving assembly 521 is connected to the fourth guiding member 523; Third, the linear driving assembly 521 is connected to both the blocking member 51 and the fourth guiding member 523.

[0110] The second driving mechanism 52 not only includes the linear driving assembly 521, but also includes the third guiding member 522 and the fourth guiding member 523, which can enable the blocking member 51 to move relative to the bracket 10 along a preset moving path, and the settings of the third guiding member 522 and the fourth guiding member 523 can also play a certain supporting role for the blocking member 51, reducing the risk of the blocking member 51 shaking during the movement process, and also reducing the risk of loosening of the connection between the blocking member 51 and the linear driving assembly 521.

[0111] Such as Figure 1 and Figure 2As shown, in some embodiments, the battery testing device further includes a second guiding structure 60. At least a part of the second guiding structure 60 is disposed between the battery conveying mechanism 34 and the probe module 20 in the lifting direction Z. The second guiding structure 60 is used to guide the battery cell 11 to reach the second testing position in a preset placement manner. The blocking member 51 is disposed to avoid the second guiding structure 60 at least at the second position.

[0112] The second guiding structure 60 is a structure that guides the battery cell 11 to move along a preset movement trajectory and in a preset placement manner. The above-mentioned preset placement manner is generally determined according to the placement manner of the positive electrode probe 221 and the negative electrode probe 222 connected to the same tester in the probe module 20. For example, if the positive electrode probe 221 and the negative electrode probe 222 are arranged in a front-to-back order along a straight line, the battery cell 11 is also placed in a manner that the positive electrode post and the negative electrode post are arranged in a front-to-back order along a straight line.

[0113] The second guiding structure 60 can be composed of one or more components. For example, it can be composed of two guiding plates arranged at intervals, or can be composed of a U-shaped guiding member, or other setting methods can also be adopted, as long as the above technical effects can be achieved, and it can be specifically determined according to the usage needs.

[0114] The blocking member 51 is disposed to avoid the second guiding structure 60 at least at the second position, which means that the blocking member 51 can be disposed to avoid the second guiding structure 60 only at the second position, or can also be disposed to avoid the second guiding structure 60 at other positions, and can be specifically determined according to the usage needs. When the blocking member 51 is disposed to avoid the second guiding structure 60 at multiple positions, avoiding the second guiding structure 60 means that the blocking member 51 will not interfere with the second guiding structure 60 during the movement process. When the blocking member 51 is disposed to avoid the second guiding structure 60 only at the second position, avoiding the second guiding structure 60 means that the blocking member 51 does not interfere with the second guiding structure 60 at the second position, and the two are misaligned.

[0115] The setting of the second guiding structure 60 enables the battery cell 11 to reach the second testing position in a preset placement manner and stably contact and conduct with the probes in the probe module 20, so that the detection result can be accurate.

[0116] As Figure 1 As shown, in some embodiments, the second guiding structure 60 includes a fifth guiding member 61 and a rolling member 62. The fifth guiding member 61 is arranged along the first direction X. There are two groups of the fifth guiding members 61. The two groups of the fifth guiding members 61 are arranged at intervals along the third direction Y2 and form a channel. The channel is used for the battery cell 11 to pass through. The rolling member 62 is disposed on the fifth guiding member 61, and the rolling member 62 is used to rollingly contact the battery cell 11. The third direction Y2 is perpendicular to both the first direction X and the lifting direction Z.

[0117] The fifth guiding member 61 can be composed of one or more components, and at least includes a strip-shaped structure. The length direction of the strip-shaped structure is arranged along the first direction X, that is, it extends along the first direction X.

[0118] Each group of the fifth guiding members 61 can be provided with one or more fifth guiding members 61. When each group of the fifth guiding members 61 is provided with a plurality of fifth guiding members 61, the plurality of fifth guiding members 61 can be arranged at intervals along the lifting direction Z or connected in sequence.

[0119] The third direction Y2 can be the same direction as the second direction Y1, or can be arranged at an angle with the second direction Y1.

[0120] The size of the channel in the third direction Y2 is generally slightly larger than the size of the battery cell 11. In this way, not only can the battery cell 11 pass through the channel, but also the distance between the fifth guiding member 61 and the battery cell 11 can be relatively close, which helps to guide the moving direction and placement method of the battery cell 11.

[0121] The rolling member 62 can be a roller, a roller shaft, a spherical body, etc., and can be specifically determined according to the use requirements. Rolling contact means that when the rolling member 62 contacts the battery cell 11, there is both a rolling motion and a relative non-sliding (or extremely small sliding) state of the contact surfaces of the two.

[0122] The second guiding structure 60 can only include the fifth guiding member 61 and the rolling member 62, and can also include other structures according to the use requirements, such as a limiting member, a fixing member, etc., which can be specifically determined according to the use requirements. No matter how it is arranged, the second guiding structure 60 at least includes the fifth guiding member 61 and the rolling member 62. In this way, rolling contact can be realized between the second guiding structure 60 and the battery cell 11, so that the friction between the two is small, and the battery cell 11 can reach the second test position in a preset placement method and stably contact and conduct with the probes in the probe module 20, achieving multiple benefits at one stroke.

[0123] In some embodiments, the surface of the blocking member 51 facing the battery conveying mechanism 34 is located between the second guiding structure 60 and the bearing member 31 in the lifting direction Z.

[0124] In this way, on the basis that the second direction Y1 is perpendicular to the lifting direction Z, the blocking member 51 can avoid the second guiding structure 60 during the movement between the first position and the second position and will not interfere with the second guiding structure 60.

[0125] Such as Figures 7 to 8 shown, Figure 7 is a front view structural schematic diagram of the combined structure of the bracket, the lifting mechanism and the probe module in the battery testing device provided by some embodiments of the present application; Figure 8The front view structural schematic diagram of the probe module in the battery testing device provided by some embodiments of the present application. In some embodiments, the probe module 20 includes a support frame 21 and a plurality of probe groups 22. The support frame 21 can move up and down relative to the bracket 10. The plurality of probe groups 22 are sequentially arranged on the support frame 21 along the third direction.

[0126] The support frame 21 can be connected to the lifting mechanism 33 in the presence of the above-mentioned lifting mechanism 33, or can be directly connected to the bracket 10 for lifting in the absence of the above-mentioned lifting mechanism 33, which can be specifically determined according to the usage requirements.

[0127] The support frame 21 can be composed of one or more components and can be set in different shapes according to the usage requirements. For example, it can be a block structure, a T-shaped structure, or other shaped structures.

[0128] One probe group 22 includes at least one positive probe 221 and one negative probe 222 connected to the same tester. In addition, according to the usage requirements, the probe group 22 can also include a connection structure connecting the positive probe 221 and the negative probe 222.

[0129] The probe module 20 adopts the solution provided by this embodiment, so that the same probe module 20 has a plurality of probe groups 22, which can realize the simultaneous detection of multiple battery cells 11 or multiple standard resistors 32, and is helpful for the mass production of battery cells 11.

[0130] As Figure 7 shown, in some embodiments, there are a plurality of probe modules 20, and the plurality of probe modules 20 are sequentially arranged along the third direction Y2.

[0131] Adjacent two probe modules 20 can be arranged at intervals or can be connected, which can be specifically determined according to the usage requirements.

[0132] Adopting the solution provided by this embodiment, with a plurality of probe modules 20 provided, the battery testing device can detect a plurality of battery cells 11 simultaneously, which is helpful for the mass production of battery cells 11.

[0133] As Figure 9 shown, Figure 9 The three-dimensional structural schematic diagram of the probe module in the battery testing device provided by some embodiments of the present application. In some embodiments, the probe group 22 includes a positive probe 221 and a negative probe 222. The distance between the positive probe 221 and the negative probe 222 in the same probe group 22 is adjustable.

[0134] Specifically, the positive probe 221 and the negative probe 222 in the same probe group 22 can both be slidably arranged on the support plate along the first direction X to realize the adjustment of the distance between the two.

[0135] This can make the distance between the positive probe 221 and the negative probe 222 in the probe group 22 adjustable according to the distance between the positive electrode post and the negative electrode post in different battery cells 11, so that the battery testing device can be applicable to the detection of different battery cells 11, and has a wide range of applications.

[0136] Such as Figure 9 and Figure 10 shown, Figure 10 It is a partial circuit schematic diagram of the battery testing device provided by some embodiments of the present application. In some embodiments, there are n probe groups 22, where n is greater than or equal to 2. Identification resistors 12 are connected in parallel between the positive probe 221 and the negative probe 222 of the same probe group 22 in at least n - 1 probe groups 22. The resistance values of the identification resistors 12 corresponding to different probe groups 22 are different.

[0137] The positive probe 221 is used to connect to the positive terminal of the tester and to contact and conduct with the positive electrode post of the battery cell 11. The negative probe 222 is used to connect to the negative terminal of the tester and to contact and conduct with the negative electrode post of the battery cell 11.

[0138] The identification resistor 12 is generally a resistor with a fixed resistance value and is mainly used for identification.

[0139] By adding the identification resistor 12, it is convenient for the user to confirm through the display data of the tester connected to the probe group 22 which battery cell 11 detected by which probe group 22 has a problem.

[0140] Specifically, multiple probe groups 22 can be respectively marked as probe group 221, probe group 222... probe group 22n, and the testers corresponding to the multiple probe groups 22 are marked as tester 1, tester 2... tester n. During detection, usually battery cells 11 of the same specification are divided into different columns and pass through different probe groups 22.

[0141] In order to facilitate observing the output transmission of multiple testers, the data of multiple testers can be transmitted to the same display device and displayed by the same display device. If the display device cannot display which tester the data corresponds to, when a certain data among the multiple data displayed by the display device is abnormal, the user cannot confirm which tester and which probe group 22 the corresponding battery cell 11 is abnormal, and it is not easy to confirm the problematic battery cell 11 in time, which affects the detection efficiency.

[0142] The setting of the identification resistor 12 can cause different testers to measure different currents passing through battery cells 11 of the same specification. The tester can simultaneously output the detected current and the measured resistance of the battery cell 11. The current corresponding to the resistor can be used to determine the detection data of which tester, thereby determining the data measured by which probe group 22, and further determining which battery cell 11 has a problem.

[0143] It can be seen that the setting of the identification resistor 12 enables users to quickly identify the problematic battery cells 11, which helps improve the detection efficiency and production efficiency.

[0144] Such as Figure 1 As shown, in some embodiments, there are multiple second guiding structures 60. The second guiding structures 60 are correspondingly arranged with the probe groups.

[0145] The corresponding arrangement of the second guiding structure 60 and the probe group can be that the second guiding structure 60 and the probe group are arranged in a one-to-one correspondence, or the same second guiding structure 60 corresponds to multiple probe modules 20, or multiple second guiding structures 60 correspond to the same probe group. Specifically, it can be determined according to the usage needs.

[0146] Specifically, the one-to-one correspondence setting of the second guiding structure 60 and the probe group means that the number of the second guiding structures 60 is the same as that of the probe groups. Any second guiding structure 60 can guide the battery cell 11 to the lower part of the corresponding probe group in a preset placement manner, so that the battery cell 11 can be stably contacted and conducted with the probe group.

[0147] When the same second guiding structure 60 corresponds to multiple probe modules 20, when the distance between adjacent two probe groups is relatively small, two rows of battery cells 11 arranged side by side can be set in the channel formed by the same second guiding structure 60. The two probe groups can simultaneously detect the two battery cells 11 arranged side by side in the channel formed by the same second guiding structure 60.

[0148] When multiple second guiding structures 60 correspond to the same probe group, it may be that the battery cell 11 is relatively high and heavy, and multiple second guiding structures 60 are required to cooperate to achieve the guidance. At this time, the multiple second guiding structures 60 can be arranged at intervals along the lifting direction Z, and cooperate with each other to guide the battery cell 11 corresponding to the same probe group to the lower part of the probe group in a preset placement manner.

[0149] It should be noted that since the distance between the probe groups is adjustable, the distance between two sets of fifth guiding members 61 in the same second guiding structure 60 can also be set to be adjustable, which helps improve the adaptability between the second guiding structure 60 and the probe group.

[0150] There are multiple second guiding structures 60, and the second guiding structures 60 are arranged corresponding to the probe groups, so that the battery cells 11 at different positions can all move to the lower part of the probe groups in a preset placement manner, thereby enabling stable contact conduction with the probe groups and ensuring accurate detection results.

[0151] As Figure 5 shown, in some embodiments, the blocking member 51 includes a blocking portion 511 and a connecting portion 512. There are multiple blocking portions 511. The multiple blocking portions 511 are arranged corresponding to the multiple probe groups 22. The blocking portion 511 is connected to both the linear driving assembly 521 and / or the fourth guiding member 523 through the connecting portion 512.

[0152] The blocking portion 511 is the component or part of the blocking member 51 for making contact conduction with the battery cell 11. The connecting portion 512 is the component or part of the blocking member 51 for connecting the blocking portion 511 and the linear driving assembly 521 and / or the fourth guiding member 523.

[0153] The blocking portion 511 being arranged corresponding to the probe group 22 can be that the blocking portion 511 is arranged in one-to-one correspondence with the probe group 22, or that the same blocking portion 511 is arranged corresponding to multiple probe modules 20, or that multiple blocking portions 511 are arranged corresponding to the same probe group 22, which can be specifically determined according to the usage requirements.

[0154] Specifically, the blocking portion 511 being arranged in one-to-one correspondence with the probe group 22 means that the number of the blocking portions 511 is the same as that of the probe group 22, and any one of the blocking portions 511 can block the battery cell 11 below the corresponding probe group 22, so that the battery cell 11 can make stable contact conduction with the probe group 22.

[0155] When the same blocking portion 511 is arranged corresponding to multiple probe modules 20, it can be that the distance between two adjacent probe groups 22 is relatively small and the volume of a single blocking portion 511 is relatively large, then the same blocking portion 511 can block multiple battery cells 11 arranged side by side at the same time, and multiple probe groups 22 can detect multiple battery cells 11 arranged side by side blocked by the same blocking portion 511 simultaneously.

[0156] When multiple blocking portions 511 are arranged corresponding to the same probe group 22, it can be that the battery cell 11 is relatively wide and the width of a single blocking portion 511 is relatively small, and multiple blocking portions 511 are required to cooperate to block a single battery cell 11. At this time, the multiple blocking portions 511 can be arranged at intervals along the third direction and cooperate with each other to block the battery cell 11 corresponding to the same probe group 22.

[0157] One or more connecting parts 512 can be provided. When there is one connecting part 512, multiple blocking parts 511 are connected to the same connecting part 512; when there are multiple connecting parts 512, multiple blocking parts 511 can be connected to multiple connecting parts 512 in a one-to-one correspondence, or each blocking part 511 can be connected to multiple connecting parts 512, which can be determined according to actual usage needs.

[0158] The blocking part 511 is connected to both the linear driving assembly 521 and / or the fourth guiding part 523 through the connecting part 512, including the following situations: First, the blocking part 511 is connected to the fourth guiding part 523 through the connecting part 512; Second, the blocking part 511 is connected to the linear driving assembly 521 through the connecting part 512; Third, the blocking part 511 is connected to both the linear driving assembly 521 and the fourth guiding part 523 through the connecting part 512.

[0159] Adopting the solution provided by this embodiment for the blocking member 51 can make the structure of the blocking member 51 simple and facilitate installation.

[0160] In some embodiments, the first position and the second position are arranged along the second direction Y1, and the second direction Y1 forms an angle with both the first direction X and the lifting direction Z.

[0161] In this embodiment, the first direction X, the second direction Y1, and the lifting direction Z can be linear directions respectively, or can be curved directions respectively.

[0162] There are many components in the battery testing device. The second direction Y1 forms an angle with both the first direction X and the lifting direction Z, and there can be multiple setting methods, which can be specifically determined according to the structure and layout space of the battery testing device. This can reduce the risk of interference between the blocking member 51 and other components in the battery testing device during movement, and contribute to improving the overall space utilization rate of the battery testing device.

[0163] In some embodiments, the second direction Y1 is perpendicular to the lifting direction Z and forms an acute angle or an obtuse angle with the first direction X.

[0164] The second direction Y1 being perpendicular to the lifting direction Z is convenient for design. The second direction Y1 forming an acute angle or an obtuse angle with the first direction X can reduce the risk of interference between the blocking member 51 and other components in the battery testing device during movement, and contribute to improving the overall space utilization rate of the battery testing device.

[0165] As Figure 1 shown, in some embodiments, the battery testing device further includes a lifting mechanism 33. The lifting mechanism 33 is arranged on the bracket 10. The probe module 20 is movably connected to the bracket 10 through the lifting mechanism 33.

[0166] The lifting mechanism 33 may include a linear drive mechanism, such as a motor, a cylinder, an electric cylinder, a hydraulic cylinder, etc., or may include a rotational drive mechanism, such as a rotary drive arm, etc. It may also include both a linear drive mechanism and a rotational drive mechanism, or include other structures, such as a first guiding structure 40, a limiting structure, etc., as long as the probe module 20 can move relative to the bracket 10 along a preset movement path under the drive of the lifting mechanism 33, and it can be determined specifically according to the usage requirements.

[0167] The setting of the lifting mechanism 33, on the one hand, enables the probe module 20 to move relative to the bracket 10 along a preset movement path, making the movement trajectory of the probe module 20 consistent each time. Compared with manual control of the movement, it can reduce the product detection differences caused by human factors; on the other hand, when the lifting mechanism 33 uses a non-manual driving power source, it can improve the detection efficiency of the battery testing device.

[0168] Such as Figures 1 to 10 As shown in the figure, an embodiment of the present application provides a battery testing device. The battery testing device includes a bracket 10, a probe module 20, a first driving mechanism 30, a carrier 31, a lifting mechanism 33, a blocking mechanism 50, a first guiding structure 40, a battery conveying mechanism 34, and a second guiding structure 60. The lifting mechanism 33 is arranged on the bracket 10. The probe module 20 is connected to the bracket 10 in a lifting manner through the lifting mechanism 33. Specifically, the lifting mechanism 33 includes a longitudinal cylinder, a probe fixing plate, a reinforcing rib, a slider-rail assembly, a slider connecting plate, and a connecting angle brace. There are four slider-rail assemblies, which are divided into two groups and arranged at both ends of the bracket 10. The bracket 10 adopts a gantry bracket 10. The longitudinal cylinder is fixedly installed on the transverse plate of the bracket 10, and the driving end passes through the transverse plate and is connected to the probe fixing plate. Both ends of the probe fixing plate are connected to the sliders in the slider-rail assembly through the slider connecting plate and the connecting angle brace. The rails in the slider-rail assembly are fixedly installed on the longitudinal plate of the bracket )))10, and the sliders are slidably connected to the rails. Each longitudinal plate is provided with two rails.

[0169] At least part of the first driving mechanism 30 can move relative to the bracket 10. The carrier )))31 is used to carry the standard resistor 32. The carrier 31 is connected to the first driving mechanism 30 and can reciprocate relative to the bracket 10 between a first test position and a first avoidance position under the drive of the first driving mechanism 30. The standard resistor 32 can be in contact and conduct with the probe module 20 at the first test position. The carrier 31 and the standard resistor 32 are arranged to avoid the probe module 20 and the battery cell 11 at the first avoidance position.

[0170] The first guiding structure 40 includes a first guiding member 41 and a second guiding member 42. The first guiding member 41 is fixedly arranged relative to the bracket 10. The second guiding member 42 is arranged on the carrier 31, and the second guiding member 42 is slidably connected to the first guiding member 41 along a first direction X. The first direction X is perpendicular to the lifting direction Z.

[0171] The battery conveying mechanism 34 is used to convey the battery cells 11. The battery conveying mechanism 34 is spaced from the probe module 20 and the carrier 31 respectively in the lifting direction Z.

[0172] The blocking mechanism 50 includes a blocking member 51 and a second driving mechanism 52. The blocking member 51 can reciprocate between a first position and a second position. In the first position, the blocking member 51 can limit at least part of the battery cells 11 to the second test position. In the second test position, the battery cells 11 can be in contact and conduct with the probe module 20. In the second position, the blocking member 51 is arranged to avoid the battery cells 11.

[0173] At least part of the second driving mechanism 52 is fixedly arranged relative to the bracket 10, and the second driving mechanism 52 is connected to the blocking member 51. The second driving mechanism 52 is used to drive the blocking member 51 to reciprocate between the first position and the second position.

[0174] The second driving mechanism 52 includes a linear driving component 521, a third guiding member 522 and a fourth guiding member 523. The third guiding member 522 is fixedly arranged relative to the bracket 10. The fourth guiding member 523 is connected to the blocking member 51 and is slidably connected to the third guiding member 522. The linear driving component 521 is connected to the blocking member 51 and / or the fourth guiding member 523.

[0175] At least part of the second guiding structure 60 is arranged between the battery conveying mechanism 34 and the probe module 20 in the lifting direction Z. The second guiding structure 60 is used to guide the battery cells 11 to reach the second test position in a preset placement manner. The blocking member 51 at least avoids the second guiding structure 60 in the second position.

[0176] The second guiding structure 60 includes a fifth guiding member 61 and a rolling member 62. The fifth guiding member 61 is arranged along the first direction X. There are two groups of the fifth guiding members 61. The two groups of the fifth guiding members 61 are arranged at intervals along the third direction and form a channel. The channel is used for the battery cells 11 to pass through. The rolling member 62 is arranged on the fifth guiding member 61. The rolling member 62 is used for rolling contact with the battery cells 11. The third direction is perpendicular to both the first direction X and the lifting direction Z.

[0177] The probe module 20 includes a support frame 21 and a plurality of probe groups 22. The support frame 21 can move up and down relative to the bracket 10. The plurality of probe groups 22 are arranged on the support frame 21 in sequence along the third direction.

[0178] The support plate may include a longitudinal plate and a transverse plate connected to each other. The longitudinal plate is connected to the probe connection plate. The probe groups 22 are slidably arranged on the side of the transverse plate facing away from the longitudinal plate.

[0179] There are a plurality of probe modules 20. The plurality of probe modules 20 are arranged in sequence along the third direction.

[0180] The probe group 22 includes a positive probe 221 and a negative probe 222. There are n probe groups 22 provided, where n is greater than or equal to 2. An identification resistor 12 is connected in parallel between the positive probe 221 and the negative probe 222 of the same probe group 22 in at least n - 1 probe groups 22. The resistance values of the identification resistors 12 corresponding to different probe groups 22 are different.

[0181] There are multiple second guiding structures 60 provided. The second guiding structures 60 are arranged corresponding to the probe groups 22.

[0182] The blocking member 51 includes a blocking portion 511 and a connecting portion 512. There are multiple blocking portions 511 provided. The blocking portions 511 are arranged corresponding to the probe groups 22. The blocking portions 511 are connected to the linear driving assembly 521 and / or the fourth guiding member 523 through the connecting portion 512.

[0183] The first position and the second position are arranged along the second direction Y1. The second direction Y1 is perpendicular to the lifting direction Z and is arranged at an acute angle or an obtuse angle with the first direction X.

[0184] One side of the blocking member 51 facing the battery conveying mechanism 34 is located between the second guiding structure 60 and the carrier 31 in the lifting direction Z.

[0185] The battery testing device provided in this embodiment is related to the internal resistance test and calibration of the battery cell 11 by a primary liquid filling machine. The above internal resistance test and calibration is one of the production processes of the battery cell 11.

[0186] Battery cells 11 of different specifications need to be calibrated using different standard resistors 32.

[0187] The driving mechanisms in this embodiment are all non - human power mechanisms such as electric mechanisms and pneumatic mechanisms. When in use, different mode selections can be made according to different requirements in the production process, and the PLC is used to control the movement of different mechanisms to reach the corresponding test positions for internal resistance testing, so as to realize the full - automatic calibration without stopping the machine and achieve one - key operation. This battery testing device can not only realize the production line production test function and daily spot check, but also realize the self - diagnosis function of the measuring instrument. The calibration data is automatically recorded locally and can be uploaded to the MES (Manufacturing Execution System), that is, the manufacturing enterprise production process execution system, reducing the manual work intensity.

[0188] A group of test lines are connected in series and parallel in the test circuit and connected to the standard resistor 32, and calibration is carried out by controlling the circuit through different relays, avoiding batch quality accidents caused by instrument failure during the production process. Specifically, as Figure 10As shown, when the resistance of the battery cell 11 detected by the tester is normal, the relay (KM1, KM2, KM3 or KM4) connected in series with the corresponding tester is turned on, and the tester can be used normally. When the resistance of the battery cell 11 is abnormal, the relay (KM1, KM2, KM3 or KM4) connected in series with the corresponding tester is turned off, and the relay (KM5, KM6, KM7 or KM8) on the circuit provided with the NG resistor 70 is turned on.

[0189] The self-inspection process of the battery testing device provided in this embodiment: Start the process verification process. Through different switching of the relays in the parallel circuit, the standard resistor 32 is tested, and the single-channel verification of the battery testing device can be realized to ensure the accuracy of the instrument itself (the battery testing devices of different channels can correspond to the same specification of the standard resistor 32, or can correspond to different specifications of the standard resistor 32. Compare the test result with the value of the standard resistor 32. If the result is OK, the spot check ends; if the result is NG, the device alarms and the personnel conduct troubleshooting).

[0190] By using the battery testing device provided in this embodiment, multiple groups of battery cells 11 can be detected simultaneously through multiple channels. And each electrical component in the device is connected to the controller, and the device can perform the full-automatic verification process regularly and upload data automatically, improving the comprehensive efficiency of the device. In addition, the distance between two adjacent probe groups 22 in the battery testing device is adjustable, and the carrier 31 and the battery cell 11 can move along the first direction X, so that the measurement of battery cells 11 with different sizes can be realized.

[0191] According to the usage requirements, an NG slot can be set at the rear end of the battery testing device. When the resistance detection of the battery cell 11 is abnormal, the battery cell 11 can be moved to the NG slot through the scheduling system.

[0192] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery testing device, characterized in that, It includes a bracket, a probe module, a first driving mechanism, and a carrier; the probe module is installed on the bracket in a liftable manner, and at least part of the first driving mechanism can move relative to the bracket; the carrier is used to carry a standard resistor, the carrier is connected to the first driving mechanism, and can reciprocate relative to the bracket between a first test position and a first avoidance position under the drive of the first driving mechanism; the standard resistor can be in contact and conduct with the probe module at the first test position, and the carrier and the standard resistor avoid the probe module and the battery cell at the first avoidance position.

2. The battery testing device according to claim 1, characterized in that, The battery testing device further includes a first guiding structure, the first guiding structure includes a first guiding member and a second guiding member, the first guiding member is fixedly arranged relative to the bracket, the second guiding member is arranged on the carrier, and the second guiding member is slidably connected to the first guiding member along a first direction, and the first direction is arranged at an angle with the lifting direction of the probe module.

3. The battery testing device according to claim 2, wherein, The first direction is perpendicular to the lifting direction.

4. The battery testing device according to claim 2, characterized in that, The battery testing device further includes a battery conveying mechanism, the battery conveying mechanism is used to convey battery cells, and the battery conveying mechanism is spaced from the probe module and the carrier respectively in the lifting direction.

5. The battery testing device according to claim 4, wherein, The battery testing device further includes a blocking mechanism, the blocking mechanism has a blocking member, the blocking member can reciprocate between a first position and a second position, at the first position, the blocking member can limit at least part of the battery cells to a second test position, at the second test position, the battery cells can be in contact and conduct with the probe module, and at the second position, the blocking member avoids the battery cells.

6. The battery testing device according to claim 5, characterized in that The blocking mechanism further includes a second driving mechanism, at least part of the second driving mechanism is fixedly arranged relative to the bracket, and the second driving mechanism is connected to the blocking member, and the second driving mechanism is used to drive the blocking member to reciprocate between the first position and the second position.

7. The battery testing device according to claim 6, wherein The second driving mechanism includes a linear driving component, a third guiding member, and a fourth guiding member, the third guiding member is fixedly arranged relative to the bracket, the fourth guiding member is connected to the blocking member, and the fourth guiding member is slidably connected to the third guiding member, and the linear driving component is connected to the blocking member and / or the fourth guiding member.

8. The battery testing device according to claim 7, wherein, The battery testing device further includes a second guiding structure, at least part of the second guiding structure is arranged between the battery conveying mechanism and the probe module in the lifting direction, the second guiding structure is used to guide the battery cells to reach the second test position in a preset placement manner, and the blocking member avoids the second guiding structure at least at the second position.

9. The battery testing device according to claim 8, wherein The second guiding structure includes a fifth guiding member and rolling members. The fifth guiding member is arranged along a first direction. There are two sets of the fifth guiding members, and the two sets of the fifth guiding members are arranged at intervals along a third direction and form a channel for the battery cell to pass through. The rolling members are arranged on the fifth guiding member and are used for rolling contact with the battery cell. The third direction is perpendicular to both the first direction and the lifting direction.

10. The battery testing device according to claim 9, characterized in that, One side of the blocking member facing the battery conveying mechanism is located between the second guiding structure and the bearing member in the lifting direction.

11. The battery testing device according to claim 9, wherein, The probe module includes a support frame and a plurality of probe groups. The support frame can move up and down relative to the bracket, and the plurality of probe groups are sequentially arranged on the support frame along the third direction.

12. The battery testing device according to claim 11, wherein, There are a plurality of the probe modules, and the plurality of probe modules are sequentially arranged along the third direction.

13. The battery testing device according to claim 12, wherein, Each probe group includes a positive probe and a negative probe, and the distance between the positive probe and the negative probe in the same probe group is adjustable.

14. The battery testing device according to claim 13, wherein, There are n probe groups, where n is greater than or equal to 2. Identification resistors are connected in parallel between the positive probe and the negative probe of the same probe group in at least n - 1 probe groups, and the resistance values of the identification resistors corresponding to different probe groups are different.

15. The battery testing device according to claim 12, wherein, There are a plurality of the second guiding structures, and the second guiding structures are arranged corresponding to the probe groups.

16. The battery testing device according to claim 11, wherein, The blocking member includes a blocking portion and a connecting portion. There are a plurality of the blocking portions, and the blocking portions are arranged corresponding to the probe groups. The blocking portions are connected to the linear driving assembly and / or the fourth guiding member through the connecting portion.

17. The battery testing device according to any one of claims 5-16, characterized in that, The first position and the second position are arranged along a second direction, and the second direction forms an angle with both the first direction and the lifting direction.

18. The battery testing device according to claim 17, characterized in that, The second direction is perpendicular to the lifting direction and forms an acute angle or an obtuse angle with the first direction.

19. The battery testing device according to any one of claims 1-16, characterized in that, The battery testing device further includes a lifting mechanism arranged on the bracket, and the probe module is movably connected to the bracket through the lifting mechanism.

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