Battery cell polarity detection device

Abstract

The utility model relates to a kind of battery polarity detection devices.The device includes detection mechanism and driving part, detection mechanism includes multiple detection probes and multiple detection units, each group of detection probe can be electrically connected with the transmission line transmission one to be measured battery, and each group of detection probe is connected to a detection unit, the detection unit is used to judge the polarity of the battery to be measured;Driving part connects detection mechanism;Wherein, when the battery to be measured on transmission line passes through detection mechanism, driving part drives the multiple detection probes of detection mechanism and the pole of multiple battery to be measured corresponding connection, so that detection mechanism can carry out polarity detection to multiple battery to be measured.Using the device does not need complex image processing technology, accurate detection of battery polarity can be realized, the cost of battery polarity detection can be significantly reduced, and the device is not limited by external environment, and the versatility of battery polarity detection can be enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power batteries, in particular to a battery cell polarity detection device. BACKGROUND

[0002] A power battery is a battery that provides power for a device. The power battery includes a plurality of battery cells stacked together. The battery cells are connected in series or in parallel to form a mobile power supply with a capacity and a voltage that meet application requirements.

[0003] During the automatic stacking of battery cells in a power battery, if the polarity direction of the battery cells is incorrectly stacked, a short circuit or other electrical problems will occur in the stacked battery cells. Therefore, detecting the polarity direction of each battery cell before stacking is a key link to ensure the safety and efficiency of stacking.

[0004] In the conventional technology, when detecting the polarity of a battery cell, the battery cell is removed from the automatic production line and transported to an offline detection mechanism for polarity detection, which seriously affects the automatic production efficiency of the battery.

[0005] To match the production efficiency of the automatic production line of the power battery, a charge-coupled device (CCD) photographing technology is usually used to detect the polarity of the battery cell online. The image of the battery cell pole is obtained by the CCD, and the image is identified to determine the polarity direction of the battery cell. Since the CCD can quickly obtain the image and make a polarity judgment, it can match the operation time of the automatic production line and ensure the production efficiency of the automatic production line. However, the CCD technology has high cost, and some specifications of the power battery poles may use certain special materials, which reduces the recognition ability of the CCD and causes recognition errors or inability to recognize. Therefore, the CCD technology is not suitable for all specifications of the power battery. CONTENT OF THE UTILITY MODEL

[0006] Therefore, it is necessary to provide a battery cell polarity detection device with high production efficiency, strong universality, low cost, and the ability to effectively avoid polarity errors of battery cells during stacking.

[0007] The present application provides a battery cell polarity detection device, which includes:

[0008] a detection mechanism including a plurality of detection probes and a plurality of detection units, each detection probe being electrically connected to a battery cell to be tested transported on a conveying line, and each detection probe being connected to a detection unit, and the detection unit being used to determine the polarity of the battery cell to be tested; and

[0009] a driving member connected to the detection mechanism;

[0010] The detection mechanism is driven by the driving member to connect the multiple groups of detection probes to the multiple poles of the multiple battery cells to be detected.

[0011] In one of the embodiments, the detection mechanism further comprises a probe fixing unit, the detection probes are connected to the probe fixing unit, and the output end of the driving member is connected to the probe fixing unit, so that the driving member can drive the probe fixing unit to drive the multiple groups of detection probes of the detection mechanism to be connected to the multiple poles of the multiple battery cells to be detected.

[0012] In one of the embodiments, the probe fixing unit extends along the transmission direction of the transmission line, and the multiple groups of detection probes are movably connected to the probe fixing unit; each group of detection probes comprises a first probe and a second probe, one of the first probe and the second probe is used to be connected to the positive pole of the battery cell to be detected, and the other is used to be connected to the negative pole of the battery cell to be detected.

[0013] In one of the embodiments, the probe fixing unit is provided with a sliding rail or a sliding groove; the detection probe further comprises a mounting block, the first probe and the second probe are arranged on the mounting block; and the mounting block is slidably connected to the sliding rail or the sliding groove.

[0014] In one of the embodiments, the detection mechanism further comprises:

[0015] A locking member is connected to the probe fixing unit and the mounting block, and can fix the mounting block on the sliding rail or the sliding groove.

[0016] In one of the embodiments, the detection mechanism further comprises a first position limiter arranged on one side of the test probe, and the first position limiter is used to detect whether there is a battery cell to be detected within a preset range on the transmission line.

[0017] In one of the embodiments, the detection mechanism further comprises a support arranged below the transmission line, and the detection mechanism and the driving member are arranged on the support and located on one side of the transmission line.

[0018] In one of the embodiments, the driving member comprises a vertical driving member and a horizontal driving member; the vertical driving member is arranged on the support, the horizontal driving member is connected to the output end of the vertical driving member, and the detection mechanism is connected to the output end of the horizontal driving member; and the vertical driving member can drive the multiple groups of detection probes to rise above the transmission surface of the transmission line.

[0019] In one of the embodiments, the support comprises a fixing member fixed to the other side of the transmission line to fix the detection device to the transmission line.

[0020] In one of the embodiments, the detection mechanism further comprises:

[0021] A second position limiter is arranged on the driving member and is used to detect the position of the multiple groups of detection probes in the vertical direction.

[0022] The above-mentioned battery cell polarity detection device comprises a detection mechanism and a driving member. The detection mechanism comprises a plurality of detection probes and a plurality of detection units. Each set of detection probes can be electrically connected to a battery cell to be detected transmitted on a transmission line, and each set of detection probes is connected to a detection unit for judging the polarity of the battery cell to be detected. The driving member is connected to the detection mechanism. When the battery cell to be detected on the transmission line passes through the detection mechanism, the driving member drives the plurality of detection probes of the detection mechanism to be connected to the corresponding pole of the plurality of battery cells to be detected, so that the detection mechanism can detect the polarity of the plurality of battery cells to be detected. The battery cell polarity detection device of the present application uses one set of detection probes in cooperation with one detection unit, so that each set of detection probes can perform polarity detection when connected to the pole of the battery cell to be detected. The driving member can drive the plurality of probes of the detection mechanism to be connected to the plurality of battery cells to be detected at the same time when the battery cell passes through the transmission line of the battery production line, so that the polarity detection of the plurality of battery cells can be completed at one time, greatly improving the online detection efficiency. At the same time, the present application can complete the detection as long as the detection probe is in physical contact with the pole of the battery cell, which has high accuracy and strong universality without special requirements for the type and specification of the battery cell product. In actual automatic production, the contact detection can meet the accurate detection of the polarity of the battery cell and does not affect the production efficiency of the existing production line, which is rarely achieved at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a top view of the battery cell polarity detection device in one embodiment;

[0025] Figure 2 It is a schematic view of the connection relationship between the detection probe and the probe fixing unit in one embodiment;

[0026] Figure 3 It is a schematic view of the connection relationship between the first probe and the mounting block in one embodiment;

[0027] Figure 4 It is a schematic view of the structure of the battery cell polarity detection device 10 in one embodiment;

[0028] Figure 5 It is a schematic view of the structure of the first limiting device in one embodiment;

[0029] Figure 6 It is a side view of the battery cell polarity detection device in one embodiment;

[0030] Figure 7 Fig. 2 is a schematic view of a second position limiter in an embodiment.

[0031] 10, battery cell polarity detection device; 20, battery cell to be detected; 100, transmission line; 200, detection mechanism; 300, driving member; 400, first position limiter; 500, bracket; 600, second position limiter; 202, detection probe; 204, probe fixing unit; 302, vertical driving member; 304, horizontal driving member; 402, first sensor; 404, position limiting bracket; 502, first bearing plate; 504, second bearing plate; 506, fixing member; 602, second sensor; 604, controller; 2022, mounting block; 2024, first probe; 2026, second probe; 2042, slide; 3022, second cylinder; 3024, second guide rod; 3028, second connecting member; 3042, first cylinder; 3044, first guide rod; 3046, first directional block; 3048, connecting rod. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0036] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0038] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes, and do not represent the only embodiment.

[0039] Reference Figure 1, the utility model discloses an embodiment provides the electric core polarity detection device 10, including detection mechanism 200 and drive piece 300, detection mechanism 200 includes multiple detection probe 202 and multiple detection unit (not shown), and each detection probe 202 can be electrically connected with the transmission line 100 transmission one to be measured electric core 20, and each detection probe 202 is connected to a detection unit, and the detection unit is used to judge the polarity of the to be measured electric core 20, drive piece 300 connects detection mechanism 200, wherein when the to be measured electric core 20 on transmission line 100 passes through detection mechanism 200, drive piece 300 drives detection mechanism 200 and the polarity post connection of to be measured electric core 20, makes detection mechanism 200 can carry out polarity detection to to be measured electric core 20.

[0040] In the application, the transmission line 100 is a part of the battery production line, which can support and transport the to be measured electric core 20, and the transmission path of the transmission line 100 passes through the detection mechanism 200; the multiple detection probes 202 of the detection mechanism 200 correspond to the multiple detection units one by one, each detection unit is connected to a group of detection probes 202, and the detection probe 202 can be connected to a to be measured electric core 20 on the transmission line 100, so that each detection unit can be electrically connected with a to be measured electric core 20, and then the polarity detection of the passing to be measured electric core 20 is realized; each detection unit is used to detect a to be measured electric core 20, and the detection results of the detection units are not affected by other detection probes 202 and / or other detection units around, so that the detection accuracy is higher; the drive piece 300 is connected with the detection mechanism 200, so as to drive the detection mechanism 200 to move, so that the multiple detection probes 202 on the detection mechanism 200 can be connected with the polarity posts of the multiple to be measured electric cores 20 on the transmission line 100, so that the detection mechanism 200 can simultaneously carry out polarity detection on the multiple to be measured electric cores 20, and the detection efficiency is higher.

[0041] In the application, the to be measured electric core 20 refers to an electric core that needs to be detected in the electric core stacking process, and the electric core can be any type of battery unit, such as a lithium ion battery, a nickel-hydrogen battery, etc. The transmission line 100 refers to a device for transporting the to be measured electric core 20 in the automatic battery production line, and in the actual battery production process, the transmission line 100 often simultaneously transports multiple trays, the trays are used to carry the to be measured electric core 20, and the multiple trays are arranged at intervals on the transmission line 100, so as to facilitate the working operation of each to be measured electric core 20 at each processing station. The transmission line 100 can drive the to be measured electric core 20 to move through a roller transmission belt, a chain conveyor belt or a pneumatic conveying system, and the application does not make specific limitation.

[0042] Exemplarily, the detection mechanism 200 is located on one side of the transmission line 100, that is, the transmission line 100 passes through the detection mechanism 200. The detection mechanism 200 is configured to detect the polarity of the to-be-detected battery cell 20 on the transmission line 100. The output end of the driving member 300 is connected with the detection mechanism 200, and is configured to drive the detection mechanism 200 to move, so as to realize that the multiple sets of detection probes 202 of the detection mechanism 200 are connected with the pole columns of the multiple to-be-detected battery cells 20, and the detection mechanism 200 can simultaneously determine the polarity of the multiple to-be-detected battery cells 20.

[0043] In the conventional manner, the detection mechanism can include an image recognition system, which is configured to detect the polarity of the battery cell. However, the image recognition system is very sensitive to light conditions. When the ambient light is insufficient or too strong, the image quality may be reduced, thereby affecting the detection accuracy of the battery cell polarity detection. In addition, dirt on the surface of the battery cell, material reflection or other interference may also interfere with the image recognition system, so that the accuracy of the battery cell polarity detection is reduced. Therefore, in the battery cell polarity detection device of the present application, the driving member 300 drives the probes of the detection mechanism 200 to directly contact the pole columns of the to-be-detected battery cell 20, so as to determine the polarity of the to-be-detected battery cell 20, so that the process of the battery cell polarity detection is not affected by the environmental illumination and the state of the surface of the battery cell, thereby ensuring the accuracy of the polarity detection of the to-be-detected battery cell.

[0044] The battery cell polarity detection device 10 of the present embodiment is configured to use one set of detection probes 202 in cooperation with one detection unit, so that the polarity detection can be performed when each set of detection probes 202 is connected to the pole column of the to-be-detected battery cell 20. The driving member 300 can drive the multiple sets of detection probes 202 of the detection mechanism 200 to be connected with the multiple to-be-detected battery cells 20 at the same time when the battery cell passes through the transmission line 100 of the battery production line, so that the polarity detection of multiple battery cells can be completed at one time, thereby greatly improving the online detection efficiency. In addition, the detection of the present application can be completed only by the physical contact between the detection probe 202 and the pole column of the battery cell, the accuracy is high, and the type and specification of the battery cell product are not special, so the universality is relatively strong.

[0045] In an exemplary embodiment, the detection mechanism 200 further comprises a probe fixing unit 204, as shown in Figure 2 Fig. 4 shows a schematic view of the connection relationship between the detection probe 202 and the probe fixing unit 204. The detection probe 202 is connected with the probe fixing unit 204, and the output end of the driving member 300 is connected with the probe fixing unit 204. The driving member 300 can drive the probe fixing unit 204, so as to drive the multiple sets of detection probes 202 of the detection mechanism 200 to be connected with the corresponding pole columns of the multiple to-be-detected battery cells 20.

[0046] The probe fixing unit 204 is arranged along the length direction of the transmission line 100, and a plurality of groups of detection probes 202 are sequentially connected along the length direction of the probe fixing unit 204, and the probe fixing unit 204 is used for supporting and fixing the detection probes 202. The detection probes 202 are used for connecting with the pole of the battery to be detected 20, and the detection probes 202 can include a mounting block and a probe. The mounting block is used for connecting with the probe fixing unit 204, and the probe is used for directly contacting with the pole of the battery to be detected 20. The detection probes 202 can further include a connecting line, which is used for connecting with a detection unit and transmitting an electrical signal to the detection unit, so that the detection unit judges the polarity of the battery to be detected 20.

[0047] Optionally, the driving member 300 can be a driving cylinder, and the output end of the driving cylinder is a component, such as a piston rod, which is driven by a pneumatic system to apply force. The driving member 300 can drive the components connected to the output end to move. The output end of the driving member 300 is connected with the probe fixing unit 204, and the probe fixing unit 204 can be fixedly connected with the output end of the driving member 300 by screwing, welding or clamping. When the driving member 300 drives the probe fixing unit 204 to move, the detection probes 202 can be correspondingly moved to connect with the pole of the battery to be detected 20, so as to detect the polarity of the battery to be detected 20.

[0048] In this embodiment, the output end of the driving member 300 is connected with the probe fixing unit 204, and the driving member 300 drives the detection probes 202 of the detection mechanism 200 to connect with the pole of the battery to be detected 20. The position of the detection probes 202 can be adjusted to ensure that the detection probes 202 accurately abut against the poles of different specifications of the battery to be detected 20, thereby improving the universality of the polarity detection.

[0049] Please refer to Figure 1 and Figure 3 In an exemplary embodiment, the probe fixing unit 204 extends along the transmission direction of the transmission line 100, and a plurality of groups of detection probes 202 are movably connected to the probe fixing unit 204. Each group of detection probes 202 includes a first probe 2024 and a second probe 2026. One of the first probe 2024 and the second probe 2026 is used for connecting with the positive pole of the battery to be detected 20, and the other is used for connecting with the negative pole of the battery to be detected 20.

[0050] The probe fixing unit 204 extends along the transmission direction of the transmission line 100, and the multiple groups of detection probes 202 are movably connected to the probe fixing unit 204, so that each group of detection probes 202 can keep the same distance from each battery cell 20 on the transmission line 100. When the driving member 300 drives the probe fixing unit 204, the multiple groups of detection probes 202 on the probe fixing unit 204 can simultaneously achieve good contact with the corresponding battery cell 20, thereby ensuring the detection effect.

[0051] Optionally, the number of groups of detection probes 202 can be determined according to the space on both sides of the transmission line 100, so that the multiple groups of detection probes 202 on the probe fixing unit 204 do not interfere with other equipment on both sides of the battery polarity detection device 10. Of course, the number of groups of detection probes 202 can also be determined in combination with the production speed of the upstream and downstream of the transmission line 100. When the processing speed of the upstream or downstream processing station is faster, the number of groups of detection probes 202 can be appropriately increased, and when the processing speed of the upstream or downstream processing station is slower, the number of groups of detection probes 202 can be appropriately reduced. Figure 1 For example, in the embodiment, four groups of detection probes 202 are used.

[0052] Optionally, the shapes of the first probe 2024 and the second probe 2026 of the detection probe 202 can be set according to actual conditions. For example, when the contact area of the pole of the battery cell 20 to be detected is small, the shapes of the first probe and the second probe of the detection probe 202 are set as needle-shaped, and when the contact area of the pole of the battery cell 20 to be detected is large, the shapes of the first probe 2024 and the second probe 2026 of the detection probe 202 are set as disc-shaped. The manufacturing material of the first probe 2024 and the second probe 2026 of the detection probe 202 can be a metal material with good wear resistance and good electrical conductivity, such as copper, nickel, silver, etc.

[0053] The multiple groups of detection probes 202 are movably connected to the probe fixing unit 204. When the type or specification of the battery on the production line is changed, the distance between the first probe 2024 and the second probe 2026 and the distance between the adjacent two groups of detection probes 202 can be adaptively adjusted at the position of the probe fixing unit 204, so as to ensure that the detection probe 202 can accurately contact the pole of the battery cell 20 to be detected of different types.

[0054] In the embodiment, the plurality of groups of detection probes 202 are movably connected to the probe fixing unit 204, which can simultaneously detect the polarity of a plurality of battery cells 20 of various types, improving the versatility and efficiency of the polarity detection. Each group of detection probes 202 includes a first probe 2024 and a second probe 2026, one of which is used to connect to the positive pole of the battery cell 20, and the other of which is used to connect to the negative pole of the battery cell 20, so that the corresponding detection unit can be connected to the positive and negative poles of the battery cell through the first probe 2024 and the second probe 2026, so that each detection unit can obtain more accurate electrical signals, thereby improving the accuracy and effectiveness of the polarity detection of the battery cell 20.

[0055] In an exemplary embodiment, the probe fixing unit 204 is provided with a sliding rail or a sliding groove; the detection probe 202 further includes a mounting block 2022, and the first probe 2024 and the second probe 2026 are arranged on the mounting block 2022; the mounting block 2022 is slidably connected to the sliding rail or the sliding groove, so that the distance between the first probe 2024 and the second probe 2026 and the distance between adjacent two groups of detection probes 202 can be adjusted.

[0056] In an embodiment of the present application, the probe fixing unit 204 is provided with a sliding groove 2042, as shown in Figure 2 and Figure 3 The first probe 2024 and the second probe 2026 are arranged on the mounting block 2022, and the mounting block 2022 is slidably connected to the sliding groove 2042, so that the distance between the first probe 2024 and the second probe 2026 and the distance between adjacent two groups of detection probes 202 can be adjusted. Figure 2 In the embodiment, the probe fixing unit 204 is provided with a sliding groove 2042, as shown in

[0057] In some embodiments, a sliding rail can be provided on the probe fixing unit 204, and a sliding block can be provided on the mounting block 2022, which is clamped in the sliding rail, so that the position of the detection probe 202 on the probe fixing unit 204 can be adjusted. Figure 3As shown is a schematic view of the connection relationship between the detection probe and the mounting block. The first probe 2024 and the second probe 2026 are both provided with a mounting block 2022. The first probe 2024 and the second probe 2026 can be fixedly connected to the corresponding mounting block by screwing or clamping and the like. Each mounting block 2022 is arranged in the slide rail or the slide groove. Through the cooperation of the mounting block 2022 and the slide rail or the slide groove, the plurality of groups of detection probes 202 can slide or be adjusted in position under the guidance of the slide rail or the slide groove. Further, the slide block can further include a roller or other guiding device, which can ensure that the detection probe 202 remains stable during sliding and reduces friction.

[0058] In this embodiment, the probe fixing unit 204 is provided with a slide rail or a slide groove. Through the cooperation of the slide block and the slide rail, the position of the detection probe 202 in the slide rail or the slide groove can be adjusted, and the spacing of each group of detection probes 202 can be adaptively adjusted, so that the test probe can abut against the pole of the to-be-tested battery cell 20 of different sizes or in different positions, thereby improving the versatility of the battery cell polarity detection device 10.

[0059] In the above example embodiment, a locking member is further included. The locking member connects the probe fixing unit 204 and the mounting block and can fix the mounting block on the slide rail or the slide groove.

[0060] For example, the locking member can be arranged on one side of the probe fixing unit 204 provided with the slide rail or the slide groove. The locking member can fix the mounting block on the slide rail or the slide groove by screwing, clamping or other fixing mechanisms, i.e., the screwing device, the spring clamp or the clamp directly acts on the mounting block, so that the mounting block is fixed on the slide rail or the slide groove, thereby fixing the position of the detection probe 202 on the slide rail or the slide groove, which is beneficial to the stability when the first probe 2024 and the second probe 2026 contact the positive and negative poles of the battery cell.

[0061] In this embodiment, the mounting block 2022 is fixed on the slide rail or the slide groove by the locking member, thereby fixing the position of the detection probe 202 on the slide rail or the slide groove. This can ensure that the detection probe 202 always keeps stable alignment with the pole of the to-be-tested battery cell 20 during polarity detection, thereby avoiding the situation that the position of the detection probe 202 deviates or shakes during polarity detection, reducing measurement error and improving the accuracy and consistency of battery cell polarity detection.

[0062] In one example embodiment, as Figure 4As shown in the structural schematic diagram of the battery cell polarity detection device 10, the battery cell polarity detection device 10 further comprises a first position limiter 400, which is located on one side of the detection mechanism 200 and is used to detect whether there is a battery cell 20 to be detected on the transmission line 100 passing through the detection mechanism 200, and when the battery cell 20 to be detected is detected, the transmission line 100 stops transmission.

[0063] On the battery automatic production line, due to the working time of the upstream processing station of the transmission line 100, the number of battery cells on the transmission line 100 and the presence or absence of battery cells may change greatly, and there may be a situation that sometimes there are battery cells on the transmission line 100 and sometimes there are no battery cells. The first position limiter 400 is arranged on the battery cell polarity detection device 10 to monitor whether there is a battery cell 20 to be detected on the transmission line 100. When the battery cell 20 to be detected passes through the detection mechanism 200, the first position limiter 400 can timely detect the presence of the battery cell 20 to be detected, and according to the preset detection logic, a signal is sent to instruct the transmission line 100 to stop transmission. When the first position limiter 400 cannot detect the transmission of battery cells on the transmission line 100, the detection mechanism 200 of the battery cell polarity detection device 10 exits the detection position to prevent interference with the transmission line 100 or peripheral mechanical hands and other equipment.

[0064] For example, Figure 5 As shown in the structural schematic diagram of the first position limiter 400, the first position limiter 400 can comprise a first sensor 402 and a position limiting support 404. One end of the position limiting support 404 is fixed to a support of the battery cell polarity detection device 10, and the other end of the position limiting support 404 is provided with the first sensor 402. The position of the battery cell 20 to be detected is detected by the first sensor 402. When the battery cell 20 to be detected enters the detection area, the production line control end controls the transmission line 100 to stop transmission according to the detection result of the first sensor 402, so that the battery cell 20 to be detected is stationary, so that the battery cell 20 to be detected is stopped in the area where the detection mechanism 200 is located, and the inaccuracy of the detection result caused by the displacement of the battery cell during the polarity detection process can be avoided.

[0065] For example, the first sensor 402 can be an infrared sensor, which can detect a certain area on the transmission line 100 to determine whether there is a battery cell 20 to be detected on the transmission line 100. When there is a battery cell 20 to be detected on the transmission line 100 but the battery cell 20 to be detected has not reached the battery cell polarity detection device 10, the battery cell 20 to be detected can be recognized by the first sensor 402, so that the battery cell polarity detection device 10 can enter the detection preparation state in advance, so that the detection probe 202 can quickly abut against the battery cell 20 to be detected when the battery cell 20 to be detected arrives, and then the polarity detection is quickly completed.

[0066] In the embodiment, the control transmission line 100 stops transmission, so that the to-be-tested battery cell 20 is static, the detection probe 202 can be ensured to abut on the positive and negative poles of the to-be-tested battery cell 20, and the accuracy of the battery cell polarity detection is improved. Meanwhile, the first sensor 402 can minimize the time required for the detection probe 202 to approach the to-be-tested battery cell 20, and the design of the plurality of detection probes 202 can realize the detection of a plurality of to-be-tested battery cells 20 at one time, and the detection efficiency is high. Therefore, the battery cell polarity detection device 10 has high detection accuracy and detection efficiency, and provides a new solution for the online battery cell polarity detection of the automatic production line.

[0067] In an exemplary embodiment, the battery cell polarity detection device 10 further comprises a support 500, the support 500 is arranged below the transmission line 100, the detection mechanism 200 and the driving member 300 are arranged on the support 500 and located on one side of the transmission line 100.

[0068] The support 500 can carry the detection mechanism 200 and the driving member 300, and provide stable support for the detection mechanism 200 and the driving member 300. The support 500 is arranged below the transmission line 100, and the detection mechanism 200 and the driving member 300 are located on one side of the transmission line 100. On the one hand, it can avoid interference with the transmission line 100 and the mechanical hand above it, and on the other hand, it can ensure that the detection mechanism 200 can travel to contact the to-be-tested battery cell 20 in a short time.

[0069] Optionally, the support 500 can include a first carrying plate 502 and a second carrying plate 504, the first carrying plate 502 is fixedly arranged on the upper part of the support 500, the first carrying plate 502 is used for carrying the driving member 300 and the second carrying plate 504, and the bottom surface of the first carrying plate 502 is fixedly connected with the driving member 300, and the output end of the driving member 300 is connected with the second carrying plate 504. The first carrying plate 502 can also be provided with a through hole, and the output end of the driving member 300 can be connected with the second carrying plate 504 through the through hole.

[0070] The first carrying plate 502 and the second carrying plate 504 can be connected through a plurality of guide members, the guide member includes a sleeve rod and a guide rod, and the guide member is a length-adjustable mechanism, that is, the longitudinal distance between the first carrying plate 502 and the second carrying plate 504 is adjustable, so that the height of the second carrying plate 504 can be accurately guided and flexibly adjusted under different working conditions. The shape and material of the first carrying plate 502 and the second carrying plate 504 are not limited here, the shape can be square, and the material can be steel plate, aluminum alloy, etc.

[0071] The support 500 can further include a support column, a crossbeam, a support leg, etc., and each support leg can be fixed to the bottom surface by a screw to fix the position of the support 500. The shape and material of the support 500 are not limited herein, and the support 500 can be in the shape of a rectangular frame and can be made of steel, aluminum alloy, or high-strength plastic.

[0072] In the above example embodiment, the driving member 300 includes a vertical driving member 302 and a horizontal driving member 304; the vertical driving member 302 is arranged on the support 500, the horizontal driving member 304 is connected to the output end of the vertical driving member 302, and the detection mechanism 200 is connected to the output end of the horizontal driving member 304; the vertical driving member 302 can drive multiple groups of detection probes 202 to rise above the transmission surface of the transmission line 100 so as to be at the same height as the positive and negative electrode posts of the battery to be tested 20 on the transmission line 100, thereby achieving connection.

[0073] The output end of the horizontal driving member 304 is connected to the probe fixing unit 204, and the horizontal driving member 304 is used to drive the probe fixing unit 204 to move, thereby driving the detection probes 202 to move correspondingly.

[0074] For example, the horizontal driving member 304 is installed on the second bearing plate 504, and the horizontal driving member 304 includes a first air cylinder 3042, a first guide rod 3044, and a first directional block 3046. The first air cylinder 3042 is fixed to the second bearing plate 504, and the output end of the first air cylinder 3042 is connected to the probe fixing unit 204. The first directional block 3046 is fixed to the second bearing plate 504, one end of the first guide rod 3044 is connected to a connecting rod 3048, and the second end of the first guide rod 3044 passes through the first directional block 3046 and is connected to the probe fixing unit 204. The vertical driving member 302 can include a second air cylinder 3022, a second guide rod 3024, and a second directional block (not shown). The second air cylinder 3022 is fixed below the first bearing plate 502, and the output end of the second air cylinder 3022 is connected to the second bearing plate 504. The second directional block is fixed below the first bearing plate 502, one end of the second guide rod 3024 is connected to a second connecting member 3028, and the second end of the second guide rod 3024 passes through the second directional block and is connected to the second bearing plate 504.

[0075] The output end of the vertical driving member 302 is connected to the second bearing plate 504, and the second bearing plate 504 is provided with the horizontal driving member 304. The vertical driving member 302 is used to drive the second bearing plate 504 to move in the vertical direction, thereby driving the horizontal driving member 304 to move in the vertical direction. The output end of the horizontal driving member 304 is connected to the detection mechanism 200, and is used to drive the detection mechanism 200 to move horizontally. That is, the vertical driving member 302 and the horizontal driving member 304 can cooperate to adjust the position of the detection mechanism 200.

[0076] Exemplarily, when the to-be-tested battery cell 20 on the transmission line 100 approaches the detection mechanism 200, the vertical driving member 302 drives the second bearing plate 504 to rise, and then the probe fixing unit 204 rises with the second bearing plate 504, until the height of each detection probe 202 on the probe fixing unit 204 is consistent with the height of the pole of the to-be-tested battery cell 20. When the to-be-tested battery cell 20 reaches each detection position of the detection mechanism 200 and stops, the horizontal driving member 304 drives each group of detection probes 202 to approach and abut against the to-be-tested battery cell 20 along the horizontal direction, or when the to-be-tested battery cell 20 reaches each detection position, the horizontal driving member 304 first drives each group of detection probes 202 to approach the transmission line 100 along the horizontal direction, and stops at a position without interference with the transmission line 100, until the to-be-tested battery cell 20 reaches the detection position, and then the horizontal driving member 304 continues to drive each group of detection probes 202 to approach the to-be-tested battery cell 20, until each group of detection probes 202 abuts against the to-be-tested battery cell 20. In this way, during the process that the to-be-tested battery cell 20 approaches the detection mechanism 200, the driving member 300 simultaneously drives each group of detection probes 202 to approach the transmission line 100, so that the approaching time of the to-be-tested battery cell 20 and the detection probe 202 is shortened, thereby improving the detection efficiency.

[0077] In one exemplary embodiment, as shown in FIG. 5, the bracket 500 includes a fixing member 506 fixed to the other side of the transmission line 100, so as to fix the battery cell polarity detection device 10 to the transmission line 100. Figure 6 FIG. 6 shows a side view of the battery cell polarity detection device 10. The bracket 500 includes a fixing member 506 fixed to the other side of the transmission line 100, so as to fix the battery cell polarity detection device 10 to the transmission line 100.

[0078] Exemplarily, the bracket 500 includes a plurality of fixing members 506 mounted to the side of the transmission line 100 away from the detection mechanism 200. The plurality of fixing members 506 can be fixedly connected to the side of the transmission line 100 away from the detection mechanism 200 by means of bolts, clamps or welding, so that the bracket 500 can stably support the detection mechanism 200 and the driving member 300, and ensure that the detection mechanism 200 and the driving member 300 will not move or deviate due to vibration or external force during the detection process.

[0079] In this embodiment, the fixing member 506 connected to the transmission line 100 can ensure that the battery cell polarity detection device 10 remains stable during the production process, avoiding polarity detection errors caused by movement or vibration of the detection device. In addition, the fixing member 506 can make the structure of the battery cell polarity detection device 10 more solid, improving the stability and reliability of the operation of the battery cell polarity detection device 10.

[0080] In an exemplary embodiment, further comprising: a second position limiter 600 arranged on the driving member 300, the second position limiter 600 being configured to detect the position of the detection probe 202 in the vertical direction, and the detection probe 202 stops moving in the vertical direction when the position of the detection probe 202 in the vertical direction reaches a target position.

[0081] The second position limiter 600 can detect the position of the detection probe 202 in real time when the detection probe 202 moves in the vertical direction, and send a signal to stop the detection probe 202 from moving in the vertical direction when the detection probe 202 reaches a preset target position.

[0082] For example, as shown in FIG. 6, the second position limiter 600 can include a second sensor 602 and a controller 604. Figure 7 As shown in FIG. 6, the second position limiter 600 can include a second sensor 602 and a controller 604.

[0083] The vertical driving member 302 drives the second bearing plate 504 to move in the vertical direction, and in turn drives the detection probe 202 on the second bearing plate 504 to move in the vertical direction.

[0084] In one example embodiment, when the to-be-tested battery cell 20 on the transmission line 100 passes through the detection mechanism 200, the position of the detection probe 202 is adjusted by the driving member 300, so that multiple groups of detection probes 202 can be connected to multiple to-be-tested battery cells 20 at the same time, thereby completing the polarity detection of multiple battery cells at one time, and greatly improving the online detection efficiency. Specifically, the vertical driving member 302 can drive the second bearing plate 504 to rise, and then the height of each detection probe 202 on the probe fixing unit 204 is consistent with the height of the pole of the to-be-tested battery cell 20. The horizontal driving member 304 can drive each group of detection probes 202 to approach and abut against the to-be-tested battery cell 20 in the horizontal direction, thereby ensuring the close contact between the detection probe 202 and the pole of the to-be-tested battery cell 20. After the detection probe 202 abuts against the pole of the to-be-tested battery cell 20, the detection probe 202 transmits an electrical signal to the detection unit, so that the detection unit can judge the polarity of the to-be-tested battery cell 20.

[0085] In the embodiment, the position of the detection probe 202 is adjusted by the driving member 300, which can ensure that the detection probe 202 precisely abuts against the pole of the to-be-tested battery cell 20 of different specifications, thereby improving the universality of the polarity detection of the to-be-tested battery cell 20. The driving member 300 drives multiple groups of detection probes 202 to be connected to multiple to-be-tested battery cells 20 at the same time, which can improve the detection efficiency, and at the same time, the detection probe 202 directly contacts the pole of the to-be-tested battery cell 20, so that a more accurate electrical signal can be obtained, thereby further improving the accuracy of the polarity detection.

[0086] In one example embodiment, when the polarity of the to-be-tested battery cell 20 needs to be detected, and when the to-be-tested battery cell 20 on the transmission line 100 approaches the detection mechanism 200, the vertical driving member 302 drives the second bearing plate 504 to rise, and at the same time, the second bearing plate 504 drives the detection mechanism 200 to rise. When the height of each detection probe 202 is consistent with the height of the pole of the to-be-tested battery cell 20, the vertical driving member 302 stops working. When the polarity of the to-be-tested battery cell 20 does not need to be detected, the vertical driving member 302 can drive the second bearing plate 504 to descend, and at the same time, the second bearing plate 504 drives the detection mechanism 200 to descend, which can reduce the space occupation of the battery cell polarity detection device, and avoid interference between the battery cell polarity detection device and other equipment.

[0087] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0088] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An electrode polarity detection device, characterized by, The device comprises: a detection mechanism comprising a plurality of detection probes and a plurality of detection units, each group of the detection probes being electrically connected to a to-be-detected battery on a transmission line, and each group of the detection probes being connected to a detection unit for judging the polarity of the to-be-detected battery; and a driving member connected to the detection mechanism; wherein, when the to-be-detected battery on the transmission line passes through the detection mechanism, the driving member drives a plurality of groups of the detection probes of the detection mechanism to be connected to the corresponding poles of a plurality of to-be-detected batteries, so that the detection mechanism can detect the polarity of a plurality of to-be-detected batteries.

2. The apparatus of claim 1, wherein, The detection mechanism further comprises a probe fixing unit, the detection probes are connected to the probe fixing unit, and the output end of the driving member is connected to the probe fixing unit. The driving member can drive the probe fixing unit to drive a plurality of groups of the detection probes of the detection mechanism to be connected to the corresponding poles of a plurality of to-be-detected batteries.

3. The apparatus of claim 2, wherein, The probe fixing unit extends along the transmission direction of the transmission line, and a plurality of groups of the detection probes are movably connected to the probe fixing unit. Each group of the detection probes comprises a first probe and a second probe, one of the first probe and the second probe is used to connect to the positive pole of the to-be-detected battery, and the other is used to connect to the negative pole of the to-be-detected battery.

4. The apparatus of claim 3, wherein, The probe fixing unit is provided with a sliding rail or a sliding groove. The detection probe further comprises a mounting block, and the first probe and the second probe are arranged on the mounting block. The mounting block is slidably connected to the sliding rail or the sliding groove.

5. The apparatus of claim 4, wherein, Further comprising: a locking member connected to the probe fixing unit and the mounting block, and capable of fixing the mounting block on the sliding rail or the sliding groove.

6. The apparatus of claim 1, wherein, Further comprising: a first position limiter located on one side of the detection mechanism, and used to detect whether there is a to-be-detected battery within a preset range on the transmission line.

7. The apparatus of claim 1, wherein, Further comprising a bracket, the bracket is arranged below the transmission line, and the detection mechanism and the driving member are arranged on the bracket and located on one side of the transmission line.

8. The apparatus of claim 7, wherein, The driving member comprises a vertical driving member and a horizontal driving member. The vertical driving member is arranged on the bracket, the horizontal driving member is connected to the output end of the vertical driving member, and the detection mechanism is connected to the output end of the horizontal driving member. The vertical driving member can drive a plurality of groups of the detection probes to rise above the transmission surface of the transmission line.

9. The apparatus of claim 7, wherein, The bracket comprises a fixing member fixed to the other side of the transmission line to fix the detection device and the transmission line.

10. The apparatus of claim 1, wherein, Further comprising: a second position limiter arranged on the driving member and used to detect the position of a plurality of groups of the detection probes in the vertical direction.

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