Double-row probe assembly, IV detection mechanism and battery piece IV detection device

Abstract

The utility model provides a double-row probe assembly, an IV detection mechanism and a battery piece IV detection device.The double-row probe assembly comprises a mounting frame, a first probe row and a second probe row, the first probe row and the second probe row are arranged on the mounting frame side by side, the first probe row comprises a plurality of first probes arranged at intervals in the first horizontal direction, and the second probe row comprises a plurality of second probes arranged at intervals in the second horizontal direction; the second probe row comprises a plurality of second probes which are arranged at intervals along the first horizontal direction; the first probes and the second probes are arranged in a staggered manner in the first horizontal direction. According to the double-row probe assembly provided by the utility model, the two staggered probe rows are arranged on the mounting frame, and the two rows of probe rows are staggered, so that the two rows of probe rows can be in contact with more grid lines when pressing down the battery piece, and the contact between the probes and the grid lines of the battery piece is more sufficient, and therefore, the contact efficiency of the battery piece is improved. By adopting the double-row probe assembly provided by the invention to carry out power detection on the battery piece, the detection precision can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery cell testing, and in particular to a double-row probe assembly, an IV testing mechanism, and a battery cell IV testing device. Background Art

[0002] After the grid lines are prepared on the battery cell, it needs to go through a series of tests, one of which is the power test. It generally uses a specific light source (such as an LED light) to illuminate the battery cell to generate photoelectric power. At the same time, the probes on the probe assembly are contacted with the grid lines on the surface of the battery cell, thereby measuring the current I and voltage V of the battery cell, and then calculating the power parameters of the battery cell.

[0003] When detecting the grid lines on the surface of the battery cell, a row of probes needs to be set up on the probe assembly. The probes in the same row touch different grid lines downward at the same time. Due to the intervals between the probes, when the grid line spacing is relatively small, the number of grid lines that can be touched by each probe on the same row of probes is relatively small, resulting in insufficient contact between the probes and the grid lines of the battery cell, which ultimately affects the detection accuracy. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a double-row probe row, and its detailed technical solution is as follows:

[0005] A double-row probe assembly, wherein the double-row probe assembly comprises a mounting frame and a first probe row and a second probe row, wherein:

[0006] The first probe row and the second probe row are arranged side by side on the mounting frame, the first probe row includes a plurality of first probes arranged at intervals along the first horizontal direction, and the second probe row includes a plurality of second probes arranged at intervals along the first horizontal direction;

[0007] The first probes and the second probes are arranged alternately in a first horizontal direction.

[0008] The double-row probe assembly provided in the present application has two staggered probe rows on its mounting frame. Since the double-row probe rows are staggered, it can be ensured that the two rows of probes can contact more grid lines when pressing down the battery cell, thereby ensuring that the probes are in more complete contact with the grid lines of the battery cell. Therefore, the double-row probe assembly provided in the present application is used to implement power detection on the battery cell, which can improve the detection accuracy.

[0009] In some embodiments, the double-row probe assembly further includes a first circuit, a second circuit, a third circuit and a fourth circuit disposed on a mounting frame, wherein: all odd-numbered first probes are electrically connected to the first circuit, and all even-numbered first probes are electrically connected to the second circuit; all odd-numbered second probes are electrically connected to the third circuit, and all even-numbered second probes are electrically connected to the fourth circuit.

[0010] The first circuit and the second circuit can measure the current and voltage on the battery cell respectively, so that the first probe row can measure a set of voltage and current on the battery cell; similarly, the third circuit and the fourth circuit can also measure the current and voltage on the battery cell respectively, so that the second probe row can also simultaneously measure another set of voltage and current on the battery cell, and finally the results are summarized and calculated to obtain the power value.

[0011] In some embodiments, the first probe and the second probe have the same structure, and the first probe includes a syringe, an elastic member and a needle body, wherein: the syringe is inserted into the mounting frame, the elastic member is arranged in the syringe, and the needle body is inserted into the syringe, wherein the first end of the needle body abuts against the elastic member and is electrically connected to the first circuit or the second circuit, and the second end of the needle body passes through the syringe.

[0012] When the second end of the needle body is pressed against the battery cell, the elastic member contracts, so that the second end of the needle body can be elastically pressed against the battery cell, ensuring that the needle body can fully contact and conduct with the corresponding grid line on the battery cell to ensure the detection effect.

[0013] In some embodiments, the lower end of the needle body has a circular contact surface with a diameter of 0.5 to 2 mm; or, the lower end of the needle body has an area not exceeding 13 mm. 2 contact surface.

[0014] By setting the area of ​​the lower end surface of the needle body, it can be ensured that the probe can be pressed against and cover at least one grid line on the battery cell, and the double-row probe assembly of the present application is more compact in structure and smaller in size.

[0015] In some embodiments, the movement stroke of the circular contact surface under the action of the elastic member is 0 to 10 mm.

[0016] With such arrangement, when there is a height difference between the lower ends of the needle bodies of the probes, it can be ensured that the needle bodies of all the probes can contact and press against the battery sheet.

[0017] In some embodiments, the spacing between two adjacent first probes is less than or equal to the width of a single second probe in the first horizontal direction, and the spacing between two adjacent second probes is less than or equal to the width of a single first probe in the first horizontal direction; each first probe and each second probe are used to compress at least one gate line on the battery cell extending along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0018] By setting the spacing between adjacent first probes and the spacing between adjacent first probes, it is ensured that the first probes and the second probes can cooperate to press at least most of the gate lines on the battery cell, preventing part of the gate line from being exposed between the first probes and the second probes and not forming an electrical connection.

[0019] In some embodiments, the centers of all first probes are located on the first axis, the centers of all second probes are located on the second axis, the spacing between the first axis and the second axis is L, and 1mm≤L≤4.5mm. The first tangent line is tangent to the outer edges of the contact surfaces of all first probes and is close to the second probe row, the second tangent line is tangent to the outer edges of the contact surfaces of all second probes and is close to the first probe row, and the spacing between the first tangent line and the second tangent line is d, and 0≤d≤0.5mm.

[0020] On the one hand, the distance between the first probe row and the second probe row is close enough, so that the double-row probe assembly of the present application has a more compact structure and a smaller size to reduce the obstruction of the simulated solar light source. On the other hand, the first probes and the second probes are staggered and do not interfere with each other.

[0021] The present application also provides an IV detection mechanism, which includes a mounting bracket, an upper probe mounting frame, a lower probe mounting frame and a light source, wherein:

[0022] The upper probe mounting frame and the lower probe mounting frame are both mounted on the mounting bracket and can slide up and down along the mounting bracket, and a detection station is formed between the upper probe mounting frame and the lower probe mounting frame;

[0023] A plurality of upper probe assemblies with detection ends facing downward are arranged side by side on the upper probe mounting frame. When the upper probe mounting frame slides downward to a low position, the detection ends of the upper probe assemblies are pressed against the front grid lines of the battery cell located at the detection station.

[0024] A plurality of lower probe assemblies with upward detection ends and corresponding to the upper probe assemblies are arranged side by side on the lower probe installation frame. When the lower probe installation frame slides upward to a high position, the detection ends of the lower probe assemblies are pressed against the back grid lines of the battery cell located at the detection station.

[0025] The upper probe assembly and the lower probe assembly are both double-row probe assemblies as described in any one of the above items.

[0026] After the battery cell to be tested arrives at the testing station, the upper probe mounting frame slides down to a low position, so that the detection end of each upper probe assembly is pressed against the front grid line of the battery cell. The lower probe mounting frame slides up to a high position, so that the detection end of each lower probe assembly is pressed against the back grid line of the battery cell. The light source irradiates the battery cell pressed by the upper and lower probe assemblies, and the battery cell generates electricity after absorbing the light irradiated by the light source. The upper and lower probe assemblies cooperate to complete the IV detection of the battery cell.

[0027] In some embodiments, the mounting bracket includes a first vertical plate and a second vertical plate arranged opposite to each other, wherein: the two ends of the upper probe mounting frame are respectively slidably connected to the first vertical plate and the second vertical plate, and the two ends of the lower probe mounting frame are respectively slidably connected to the first vertical plate and the second vertical plate; the IV detection mechanism also includes a first lifting module arranged on the first vertical plate and a second lifting module arranged on the second vertical plate, and the first lifting module and the second lifting module are configured to cooperate to drive the upper probe mounting frame and the lower probe mounting frame to slide in opposite directions in the vertical direction.

[0028] The lifting and lowering drive of the upper probe mounting frame and the lower probe mounting frame is realized, and finally the upper probe assembly and the lower probe assembly are pressed against the front grid line and the back grid line of the battery cell from the upper and lower sides to implement IV detection of the battery cell.

[0029] In some embodiments, the IV detection mechanism also includes a position adjustment platform, the lower end of the mounting bracket is connected to the position adjustment platform, and the position adjustment platform is configured to drive the mounting bracket to translate and rotate to adjust the position and angle of the upper probe mounting frame and the lower probe mounting frame on the horizontal plane.

[0030] By connecting the lower end of the mounting bracket to the position adjustment platform, the position and angle adjustment of the upper probe assembly and the lower probe assembly are achieved, ultimately ensuring that the upper probe assembly and the lower probe assembly can be aligned with the corresponding grid lines on the battery cell and accurately pressed against the corresponding grid lines.

[0031] In some embodiments, two ends of the upper probe assembly are respectively connected to the upper probe mounting frame in an adjustable manner, and two ends of the lower probe assembly are respectively connected to the lower probe mounting frame in an adjustable manner.

[0032] Since the sizes of battery cells in different batches vary, by adjusting the installation positions of the upper and lower probe assemblies, each upper and lower probe assembly can be pressed against different positions of the battery cell evenly and equidistantly, thereby improving the detection effect.

[0033] The present application also provides a battery cell IV detection device, which includes a rotating platform, a loading mechanism, a unloading mechanism and any of the above IV detection mechanisms, wherein:

[0034] At least one cell carrier is provided on the rotating platform. The cell carrier is a hollow structure. The rotating platform is used to drive the cell carrier to rotate step by step. A loading station, a detection station and a unloading station are sequentially provided on the rotating path of the cell carrier;

[0035] The loading mechanism is used to load the battery cell to be tested onto the battery cell carrying mechanism rotated to the loading station;

[0036] The IV testing mechanism is used to perform IV testing on the battery cell rotated to the testing station;

[0037] The unloading mechanism is used to pick up the battery cells that have completed IV testing from the battery cell carrying mechanism that rotates to the unloading station, and transport the battery cells that have completed IV testing to the subsequent station.

[0038] Through the cooperation of the rotating platform, loading mechanism, unloading mechanism and IV detection mechanism, the battery cell IV detection device provided in the present application realizes automatic IV detection of battery cells, and realizes automatic loading and unloading of battery cells, thereby improving detection efficiency.

[0039] In some embodiments, the loading mechanism includes a loading conveyor line and a loading transport portion, wherein the loading conveyor line is used to transport the battery cells to be inspected toward the rotating platform, and the loading transport portion is used to pick up the battery cells to be inspected from the loading conveyor line, and transport the adsorbed battery cells to the battery cell supporting mechanism rotated to the loading station; the unloading mechanism includes an unloading transport portion and a unloading conveyor line, wherein the unloading transport portion is used to pick up the battery cells that have completed inspection from the battery cell supporting mechanism rotated to the unloading station, and transport the battery cells that have completed inspection to the downstream station; the battery cell supporting mechanism includes a hollow tray and an adsorption assembly, wherein: the tray is connected to the rotating platform, the adsorption assembly is arranged on the tray and located in the hollow area of ​​the tray, and the adsorption assembly is used to adsorb and support the battery cells.

[0040] Through the cooperation of the loading conveyor line and the loading transport part, the loading mechanism can continuously transport the battery cells to be tested to the side of the rotating platform, and load the battery cells to be tested onto the battery cell carrier mechanism rotated to the loading station, thereby ensuring the loading efficiency. Through the cooperation of the unloading transport part and the unloading conveyor line, the unloading mechanism can continuously pick up the battery cells that have completed the inspection from the battery cell carrier mechanism rotated to the unloading station, and transport the battery cells that have completed the inspection to the back-end station, thereby ensuring the unloading efficiency. By setting the battery cell carrier mechanism as a hollow tray and adsorption component, while ensuring the adsorption and fixation of the battery cell, the contact area between the battery cell and the battery cell carrier mechanism is reduced, thereby reducing the risk of scratching the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of a double-row probe array in an embodiment of the present application at a first viewing angle;

[0042] Figure 2 It is a schematic structural diagram of a double-row probe array in an embodiment of the present application at a second viewing angle;

[0043] Figure 3 It is a schematic structural diagram of a double-row probe arrangement in an embodiment of the present application at a third viewing angle;

[0044] Figure 4 It is a partial enlarged view of a double-row probe row in an embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of the pressing of the double-row probe row against the gate line in the embodiment of the present application;

[0046] Figure 6 It is a structural schematic diagram of the IV detection mechanism in the embodiment of the present application;

[0047] Figure 7 It is a structural schematic diagram of a battery cell IV detection device in an embodiment of the present application;

[0048] Figure 8 It is a schematic diagram of the structure of the rotating platform in the embodiment of the present application;

[0049] Fig. 9 It is a structural schematic diagram of a battery cell supporting mechanism in an embodiment of the present application;

[0050] Figures 1 to 9 Included:

[0051] Double row probe row 10:

[0052] A mounting frame 101, a first probe row 102, and a second probe row 103;

[0053] IV Testing Agency 1:

[0054] Mounting bracket 11: first vertical plate 111, second vertical plate 112;

[0055] Upper probe mounting frame 12;

[0056] Lower probe mounting frame 13;

[0057] Upper probe assembly 14;

[0058] Lower probe assembly 15;

[0059] A first lifting module 16;

[0060] The second lifting module 17;

[0061] Position adjustment platform 18;

[0062] Rotating Platform 2:

[0063] Battery cell carrying mechanism 21, tray 22, adsorption assembly 23;

[0064] Feeding mechanism 3: feeding conveying line 31, feeding conveying part 32;

[0065] Unloading mechanism 4: unloading transport section 41 and unloading conveying line 42. DETAILED DESCRIPTION

[0066] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0067] A traditional probe assembly has only one row of probes on its mounting frame. The probes in the same row touch different grid lines at the same time. Due to the spacing between the probes, when the spacing between the grid lines (especially the thin grid lines) is relatively small, the number of grid lines that can be touched by each probe in the same row is relatively small, resulting in insufficient contact between the probes and the grid lines of the battery cell, ultimately affecting the detection accuracy.

[0068] In view of this, the present application provides a dual-row probe assembly for implementing IV detection (current I and voltage V detection) on a battery cell.

[0069] like Figures 1 to 4 As shown, the double-row probe assembly 10 in the embodiment of the present application includes a mounting frame 101 and a first probe row 102 and a second probe row 103, wherein:

[0070] The first probe row 102 and the second probe row 103 are arranged side by side on the mounting frame 101. The first probe row 102 includes a plurality of probes arranged along a first horizontal direction (eg Figures 1 to 4 The second probe row 103 includes a plurality of first probes arranged at uniform intervals along the first horizontal direction.

[0071] The first probes and the second probes are arranged alternately in the first horizontal direction, that is, there is a second probe between (beside) two adjacent first probes, and there is a first probe between (beside) two adjacent second probes.

[0072] like Figure 5 As shown, since the first probe row 102 and the second probe row 103 are arranged in an interlaced manner, it can be ensured that when the first probe row 102 and the second probe row 103 press down the battery cell, they can contact more grid lines 300, thereby ensuring that the probes are in more complete contact with the grid lines of the battery cell. Therefore, the use of the double-row probe assembly provided by the present application to perform power detection on the battery cell can improve the detection accuracy.

[0073] Optionally, the double-row probe assembly 10 in the embodiment of the present application further includes a first circuit, a second circuit, a third circuit and a fourth circuit arranged on the mounting frame 101, wherein:

[0074] All odd-numbered first probes in the first probe row 102 are electrically connected to the first circuit, and all even-numbered first probes are electrically connected to the second circuit. In this way, the first probe row 102 can measure a set of voltage V and current I data of the battery cell.

[0075] Similarly, all odd-numbered second probes in the second probe row 103 are electrically connected to the third circuit, and all even-numbered second probes are electrically connected to the fourth circuit. In this way, the second probe row 103 can measure a set of voltage V and current I data of the battery cell.

[0076] The control system will calculate the power based on the measured voltage and current data, and make a grade judgment and archive it for the battery cell.

[0077] Optionally, the first probe and the second probe have the same structure. Taking the first probe as an example, it includes a syringe, an elastic member and a needle body, wherein: the syringe is plugged into the mounting frame 101, the elastic member (such as a spring) is arranged in the syringe, and the needle body is movably plugged into the syringe. The first end of the needle body abuts against the elastic member and is electrically connected to the first circuit or the second circuit, and the second end of the needle body passes through the syringe.

[0078] When the second end of the needle body is pressed against the battery cell, the elastic member contracts, so that the second end of the needle body can be elastically pressed against the battery cell, ensuring that the needle body can fully contact and conduct with the corresponding grid line on the battery cell to ensure the detection effect.

[0079] like Figures 4 to 5 As shown, optionally, the needle body is a cylindrical structure, and its lower end has a circular contact surface with a diameter of 0.5 to 2 mm, or the lower end of the needle body has an area not exceeding 13 mm 2 Such a configuration can ensure that the needle body can press against at least one grid line on the battery cell, and make the double-row probe assembly 10 in the embodiment of the present application more compact and smaller in size.

[0080] Optionally, the circular contact surface of the needle body has a movement stroke of 0 to 10 mm under the action of the elastic member. In this way, when there is a height difference between the lower ends of the needle bodies of each probe due to manufacturing or installation, it can be ensured that the needle bodies of all probes can contact and press against the battery cell.

[0081] like Figure 4 and Figure 5 As shown, optionally, the spacing D1 between two adjacent first probes is less than or equal to the width of a single second probe in the first horizontal direction (when the second probe is cylindrical, the width value is the diameter of the circular contact surface of the second probe). Similarly, the spacing D2 between two adjacent second probes is less than or equal to the width of a single first probe in the first horizontal direction (when the first probe is cylindrical, the width value is the diameter of the circular contact surface of the first probe). Each first probe and each second probe are used to compress at least one of the first probes on the battery cell along the second horizontal direction (such as Figure 5 The gate line 300 extends in the Y-axis direction (in the second horizontal direction), and the second horizontal direction is perpendicular to the first horizontal direction.

[0082] By setting the spacing D1 between adjacent first probes and the spacing D2 between adjacent second probes as described above, it can be ensured that the first probes in the first probe row 102 and the second probes in the second probe row 103 can cooperate to at least press most of the gate lines on the battery cell, preventing the gate lines from being unable to be pressed by the probes due to being exposed between the first probes and the second probes.

[0083] Continue to participate Figure 4 As shown, optionally, the centers of all the first probes are located at the first axis L1, the centers of all the second probes are located at the second axis L2, the spacing between the first axis L1 and the second axis L2 is L, and 1mm≤L≤4.5mm. In addition, the first tangent M is tangent to the outer edges of the contact surfaces of all the first probes and is close to the second probe row, the second tangent N is tangent to the outer edges of the contact surfaces of all the second probes and is close to the first probe row, the spacing between the first tangent M and the second tangent N is d, and 0≤d≤0.5mm.

[0084] By performing the above arrangement of the first probe and the second probe, on the one hand, the distance between the first probe row 102 and the second probe row 103 is made close enough, thereby shortening the size of the double-row probe assembly of the present application, and on the other hand, the first probes in the first probe row 102 and the second probes in the second probe row 103 are staggered and do not interfere with each other. In addition, the shielding of the surface of the battery cell is reduced, which is conducive to the surface of the battery cell being fully irradiated by simulated sunlight, thereby improving the detection effect.

[0085] The present application also provides an IV detection mechanism. Figure 6 As shown, the IV detection mechanism 1 in the embodiment of the present application includes a mounting bracket 11, an upper probe mounting frame 12, a lower probe mounting frame 13 and a light source, wherein:

[0086] The upper probe mounting frame 12 and the lower probe mounting frame 13 are both mounted on the mounting bracket 11 and can slide up and down along the mounting bracket 11 . A detection station is formed between the upper probe mounting frame 12 and the lower probe mounting frame 13 .

[0087] A plurality of upper probe assemblies 14 with detection ends facing downward are arranged side by side on the upper probe mounting frame 12. When the upper probe mounting frame 12 slides downward to a low position, the detection ends of the upper probe assemblies 14 are pressed against the front grid lines of the battery cell at the detection station.

[0088] A number of lower probe assemblies 15 with their detection ends facing upward and corresponding one to one with the upper probe assemblies 14 are arranged side by side on the lower probe mounting frame 13. When the lower probe mounting frame 13 slides upward to a high position, the detection end of each lower probe assembly 15 presses against the back grid line of the battery cell located at the detection station.

[0089] Particularly, the upper probe assembly 14 and the lower probe assembly 15 both adopt the double-row probe assembly 10 in any of the above-mentioned embodiments.

[0090] After the battery cell to be tested arrives at the testing station, the upper probe mounting frame 12 slides downward to a low position, so that the detection end of each upper probe assembly 14 is pressed against the front grid line of the battery cell. Simultaneously, the lower probe mounting frame 13 slides upward to a high position, so that the detection end of each lower probe assembly 15 is pressed against the back grid line of the battery cell. The light source irradiates the battery cell pressed by the upper probe assembly 14 and the lower probe assembly 15, and the battery cell generates electricity after absorbing the light irradiated by the light source. The upper probe assembly 14 and the lower probe assembly 15 cooperate to complete the IV detection of the battery cell.

[0091] Optionally, the mounting bracket 11 includes a first vertical plate 111 and a second vertical plate 112 that are arranged opposite to each other, wherein: both ends of the upper probe mounting frame 12 are slidably connected to the first vertical plate 111 and the second vertical plate 112 respectively, and both ends of the lower probe mounting frame 13 are slidably connected to the first vertical plate 111 and the second vertical plate 112 respectively.

[0092] In addition, the IV detection mechanism 1 also includes a first lifting module 16 arranged on the first vertical plate 111 and a second lifting module 17 arranged on the second vertical plate. The first lifting module 16 and the second lifting module 17 are configured to cooperate to drive the upper probe mounting frame 12 and the lower probe mounting frame 13 to slide in opposite directions in the vertical direction.

[0093] Specifically, when the battery cell to be inspected arrives at the inspection station, the first lifting module 16 and the second lifting module 17 drive the upper probe mounting frame 12 to slide downward and the lower probe mounting frame 13 to slide upward, so that the detection ends of the upper probe assemblies 14 on the upper probe mounting frame 12 are pressed against the front grid lines of the battery cell, and the detection ends of the lower probe assemblies 15 on the lower probe mounting frame 13 are pressed against the back grid lines of the battery cell.

[0094] After completing the IV test on the battery cell, the first lifting module 16 and the second lifting module 17 drive the upper probe mounting frame 12 to slide upward and the lower probe mounting frame 13 to slide downward, thereby releasing the battery cell that has completed the test.

[0095] Optionally, the IV detection mechanism 1 in the embodiment of the present application also includes a position adjustment platform 18, and the lower end of the mounting bracket 11 is connected to the position adjustment platform 18. The position adjustment platform 18 is configured to drive the mounting bracket 11 to translate and rotate, so as to adjust the position and angle of the upper probe mounting frame 12 and the lower probe mounting frame 13 on the horizontal plane, and finally achieve the position and angle adjustment of the upper probe assembly 14 and the lower probe assembly 15, so as to ensure that the upper probe assembly 14 and the lower probe assembly 15 can be accurately aligned with and contact the corresponding gate line to be pressed on the battery cell.

[0096] The position adjustment platform 18 is, for example, a UVW platform commonly used in the art.

[0097] Since the sizes of battery cells of different batches are different, in order to make each upper probe assembly 14 and each lower probe assembly 15 be pressed evenly against the battery cell to improve the detection effect. Optionally, the two ends of the upper probe assembly 14 are respectively connected to the upper probe mounting frame 12 in an adjustable manner, and the two ends of the lower probe assembly 15 are respectively connected to the lower probe mounting frame 13 in an adjustable manner. For example, both ends of the upper probe mounting frame 12 and both ends of the lower probe mounting frame 13 are provided with waist-shaped mounting holes, and both ends of the upper probe assembly 14 and both ends of the lower probe assembly 15 are installed in the corresponding waist-shaped mounting holes, and can slide along the waist-shaped mounting holes to adjust the installation position.

[0098] The present application also provides a battery cell IV detection device. Figures 7 and 8 As shown, the battery cell IV detection device in the embodiment of the present application includes a rotating platform 2, a loading mechanism 3, a unloading mechanism 4 and the IV detection mechanism 1 described in any of the above embodiments, wherein:

[0099] At least one battery cell carrying mechanism 21 is arranged on the rotating platform 2. The battery cell carrying mechanism 21 is a hollow structure. The rotating platform 2 is used to drive the battery cell carrying mechanism 21 to rotate in steps. A loading station A, an inspection station B and an unloading station C are arranged in sequence on the rotation path of the battery cell carrying mechanism 21.

[0100] The loading mechanism 3 is used to load the battery cells to be inspected onto the battery cell carrying mechanism 21 rotated to the loading station A.

[0101] The IV testing mechanism 1 is used to perform IV testing on the battery cell rotated to the testing station B.

[0102] The unloading mechanism 4 is used to pick up the battery cells that have completed the IV test from the battery cell carrying mechanism 21 that rotates to the unloading station C, and transport the battery cells that have completed the IV test to the subsequent station.

[0103] It can be seen that through the cooperation of the rotating platform 2, the loading mechanism 3, the unloading mechanism 4 and the IV detection mechanism 1, the battery cell IV detection device provided in the embodiment of the present application realizes automatic IV detection of the battery cell, and realizes automatic loading and unloading of the battery cell, thereby improving the IV detection efficiency of the battery cell.

[0104] like Figure 7 As shown, optionally, the loading mechanism 3 includes a loading conveyor line 31 and a loading transport part 32, wherein the loading conveyor line 31 is used to transport the battery cells to be inspected toward the rotating platform 2, and the loading transport part 32 is used to pick up the battery cells to be inspected from the loading conveyor line, and transport the sucked battery cells to the battery cell carrying mechanism 21 rotated to the loading station A.

[0105] The unloading mechanism 4 includes an unloading transport portion 41 and an unloading conveyor line 42, wherein the unloading transport portion 41 is used to pick up the inspected battery cells from the battery cell carrier mechanism 21 rotated to the unloading station C, and to transport the inspected battery cells to the subsequent station.

[0106] Optionally, the cell carrier mechanism 21 includes a hollow tray 22 and an adsorption assembly 23, wherein: the tray 22 is connected to the rotating platform 2, the adsorption assembly 23 is arranged on the tray 22 and located in the hollow area of ​​the tray, and the adsorption assembly 23 is used to adsorb and support the cell. The adsorption assembly 23 is, for example, a suction cup.

[0107] By configuring the battery cell carrier mechanism to be a hollow tray and adsorption assembly, the battery cell is adsorbed and fixed while reducing the contact area between the battery cell and the battery cell carrier mechanism, thereby reducing the risk of scratching the battery cell.

[0108] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A double-row probe assembly, characterized in that: The double-row probe assembly comprises a mounting frame and a first probe row and a second probe row, wherein: The first probe row and the second probe row are arranged side by side on the mounting frame, the first probe row includes a plurality of first probes arranged at intervals along a first horizontal direction, and the second probe row includes a plurality of second probes arranged at intervals along the first horizontal direction; The first probes and the second probes are arranged alternately in the first horizontal direction.

2. The double-row probe assembly according to claim 1, characterized in that: The double-row probe assembly further comprises a first circuit, a second circuit, a third circuit and a fourth circuit arranged on the mounting frame, wherein: All odd-numbered first probes are electrically connected to the first circuit, and all even-numbered first probes are electrically connected to the second circuit; All odd-numbered second probes are electrically connected to the third circuit, and all even-numbered second probes are electrically connected to the fourth circuit.

3. The double-row probe assembly as claimed in claim 2, characterized in that: The first probe and the second probe have the same structure. The first probe includes a syringe, an elastic member and a needle body, wherein: The syringe is inserted on the mounting frame, the elastic member is arranged in the syringe, and the needle body is inserted in the syringe, wherein the first end of the needle body abuts against the elastic member and is electrically connected to the first circuit or the second circuit, and the second end of the needle body passes through the syringe.

4. The double-row probe assembly as claimed in claim 3, characterized in that: The lower end of the needle body has a circular contact surface with a diameter of 0.5 to 2 mm; or, The lower end of the needle body has an area not exceeding 13mm 2 contact surface.

5. The double-row probe assembly according to claim 4, characterized in that: The circular contact surface has a movement stroke of 0 to 10 mm under the action of the elastic member.

6. The double-row probe assembly according to claim 1, characterized in that: The spacing between two adjacent first probes is less than or equal to the width of a single second probe in the first horizontal direction, and the spacing between two adjacent second probes is less than or equal to the width of a single first probe in the first horizontal direction; Each of the first probes and each of the second probes are used to press at least one grid line on the battery cell extending along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

7. The double-row probe assembly according to claim 1, characterized in that: The centers of all the first probes are located on a first axis, the centers of all the second probes are located on a second axis, and the distance between the first axis and the second axis is L and 1 mm ≤ L ≤ 4.5 mm; The first tangent line is tangent to the outer edges of the contact surfaces of all the first probes and is close to the second probe row. The second tangent line is tangent to the outer edges of the contact surfaces of all the second probes and is close to the first probe row. The distance between the first tangent line and the second tangent line is d and 0≤d≤0.5mm.

8. An IV detection mechanism, characterized in that: The IV detection mechanism includes a mounting bracket, an upper probe mounting frame, a lower probe mounting frame and a light source, wherein: The upper probe mounting frame and the lower probe mounting frame are both mounted on the mounting bracket and can slide up and down along the mounting bracket, and a detection station is formed between the upper probe mounting frame and the lower probe mounting frame; The upper probe mounting frame is provided with a plurality of upper probe assemblies with detection ends facing downwards in parallel, and when the upper probe mounting frame slides downwards to a low position, the detection ends of the upper probe assemblies are pressed against the front grid lines of the battery cell located at the detection station; The lower probe mounting frame is provided with a plurality of lower probe assemblies with detection ends facing upward and corresponding to the upper probe assemblies one by one. When the lower probe mounting frame slides upward to a high position, the detection ends of the lower probe assemblies are pressed against the back grid lines of the battery cell located at the detection station. The upper probe assembly and the lower probe assembly are both the double-row probe assemblies described in any one of claims 1 to 4.

9. The IV detection mechanism according to claim 8, characterized in that: The mounting bracket comprises a first vertical plate and a second vertical plate which are arranged opposite to each other, wherein: Two ends of the upper probe mounting frame are respectively slidably connected to the first vertical plate and the second vertical plate, and two ends of the lower probe mounting frame are respectively slidably connected to the first vertical plate and the second vertical plate; The IV detection mechanism also includes a first lifting module arranged on the first vertical plate and a second lifting module arranged on the second vertical plate, and the first lifting module and the second lifting module are configured to cooperate to drive the upper probe mounting frame and the lower probe mounting frame to slide in opposite directions in the vertical direction.

10. The IV detection mechanism according to claim 8, characterized in that: The IV detection mechanism also includes a position adjustment platform, the lower end of the mounting bracket is connected to the position adjustment platform, and the position adjustment platform is configured to drive the mounting bracket to translate and rotate to adjust the position and angle of the upper probe mounting frame and the lower probe mounting frame on the horizontal plane.

11. The IV detection mechanism according to claim 8, characterized in that: Two ends of the upper probe assembly are respectively connected to the upper probe mounting frame in an adjustable manner, and two ends of the lower probe assembly are respectively connected to the lower probe mounting frame in an adjustable manner.

12. A battery cell IV detection device, characterized in that: The battery cell IV detection device comprises a rotating platform, a loading mechanism, a unloading mechanism and an IV detection mechanism as claimed in any one of claims 7 to 11, wherein: At least one battery cell carrying mechanism is arranged on the rotating platform, and the battery cell carrying mechanism is a hollow structure. The rotating platform is used to drive the battery cell carrying mechanism to rotate step by step, and a loading station, a detection station and a unloading station are arranged in sequence on the rotating path of the battery cell carrying mechanism; The loading mechanism is used to load the battery cell to be inspected onto the battery cell carrying mechanism rotated to the loading station; The IV detection mechanism is used to perform IV detection on the battery cell rotated to the detection station; The unloading mechanism is used to pick up the battery cells that have completed IV testing from the battery cell carrying mechanism that rotates to the unloading station, and transport the battery cells that have completed IV testing to the subsequent station.

13. The battery cell IV detection device according to claim 12, characterized in that: The loading mechanism includes a loading conveyor line and a loading transport part, wherein the loading conveyor line is used to transport the battery cell to be tested toward the rotating platform, and the loading transport part is used to pick up the battery cell to be tested from the loading conveyor line, and transport the sucked battery cell to the battery cell carrying mechanism rotated to the loading station; The unloading mechanism includes an unloading transport part and an unloading conveying line, wherein the unloading transport part is used to pick up the battery cells that have completed the inspection from the battery cell carrying mechanism that rotates to the unloading station, and transport the battery cells that have completed the inspection to the back-end station; The battery cell carrying mechanism includes a hollow tray and an adsorption component, wherein: The tray is connected to the rotating platform; The adsorption component is arranged on the tray and located in the hollow area of ​​the tray, and the adsorption component is used for adsorbing and supporting the battery sheet.

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