New energy battery internal resistance testing device suitable for various models

Abstract

The utility model provides a kind of new energy battery internal resistance testing device suitable for multiple models, including detection conveying belt and adjustable down pressure platform, adjustable side guardrail parallel to its transport direction is equipped on the detection conveying belt, the adjustable side guardrail is used to limit the position of square battery when being transported on the detection conveying belt;Detection probe is installed on the adjustable down pressure platform, the detection probe is equipped above the adjustable side guardrail, the adjustable down pressure platform can adjust the position of the detection probe on the adjustable down pressure platform, the adjustable down pressure platform can drive the detection probe to press down to be used to detect the square battery.This application can automatically test battery internal resistance, also can meet the internal resistance measurement demand of multiple model batteries, and the scope of application is wider.

Description

Technical Field

[0001] This utility model relates to the field of battery testing, specifically to a device for testing the internal resistance of various types of new energy batteries. Background Technology

[0002] Before being assembled into a PACK, each new energy battery must undergo internal resistance testing to ensure battery performance, safety, and lifespan. The test requires connecting the positive and negative terminals of the battery. The conventional approach is to manually connect the positive and negative terminals of the battery for testing. However, manual testing is prone to inaccurate test values ​​and has low testing efficiency. Therefore, some automated solutions for testing battery internal resistance have been proposed.

[0003] For example, Chinese utility model patent CN201922312993.7 discloses an automatic lithium battery internal resistance detection device, including a pair of cylindrical shafts arranged parallel to each other in the same horizontal plane, and linear bearing seats matching the cylindrical shafts. A push plate is connected to the linear bearing seats. One end of each cylindrical shaft is fixedly connected to a stepper motor, and the other end is connected to a feeding plate. The push plate is connected to the stepper motor via a lead screw. The device also includes a double-rod cylinder fixed on a fixed frame. Positive and negative contact probes corresponding to the positive and negative terminals of one of the lithium batteries in the lithium battery queue are connected to the cylinder rods of the double-rod cylinder. The positive and negative contact probes are connected to an internal resistance detection recorder. A rejection cylinder is provided on the side of the fixed frame near the feeding plate. This utility model can automatically feed lithium batteries and automatically detect their internal resistance values. It can also reject lithium batteries that exceed a preset internal resistance value range.

[0004] However, because the size and specifications of new energy batteries vary from manufacturer to manufacturer, and the length, width, height and positive and negative electrode spacing of batteries have different standards, the above-mentioned automated battery internal resistance testing schemes are difficult to adapt to batteries of different sizes and specifications.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for testing the internal resistance of various types of new energy batteries. This device can automatically test the internal resistance of batteries and meet the internal resistance measurement needs of various battery models.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a detection conveyor belt and an adjustable pressing platform. An adjustable side guardrail parallel to its transport direction is provided above the detection conveyor belt. The adjustable side guardrail is used to limit the position of the square battery when it is transported on the detection conveyor belt. A detection probe is installed on the adjustable pressing platform. The detection probe is located above the adjustable side guardrail. The adjustable pressing platform can adjust the position of the detection probe on the adjustable pressing platform. The adjustable pressing platform can drive the detection probe to press down for detecting the square battery.

[0008] The testing device of this application transports square batteries via a conveyor belt and uses adjustable side guardrails to adjust the position of the square batteries as they are transported on the conveyor belt, enabling square batteries of different widths or lengths to be delivered to the accurate testing position. An adjustable pressing platform is then used to adjust the height, horizontal position, and spacing of the testing probes, causing the probes to press down at the accurate testing position. This allows the testing probes to accurately align with square batteries of different heights and different positive and negative electrode spacings. Therefore, this device can automatically test the internal resistance of batteries and also meet the internal resistance measurement needs of various battery models.

[0009] Based on the above, the two detection probes are arranged one after the other along the conveying direction of the detection conveyor belt, and the adjustable side guardrails are used to limit the position from both sides of the width direction of the square battery.

[0010] In this way, the square batteries are conveyed by the detection conveyor belt along their length, which allows the adjustable side guardrails to more accurately define the position of the square batteries and also prevents them from tipping over.

[0011] Based on the above, the adjustable side guardrail includes a fixed guardrail and a movable guardrail. The movable guardrail adjusts its distance from the fixed guardrail using a screw. The adjustable pressing platform is erected above the inspection conveyor belt from one side of the fixed guardrail.

[0012] The spacing of the side railings can be adjusted using fixed railings, movable railings, and screw rods. The operation is simple and easy to implement. The adjustable pressing platform is located on one side of the fixed railing to avoid mutual interference during adjustment.

[0013] Based on the above, the adjustable pressing platform includes a base, a height adjustment seat, a pressing cylinder, and an adjustable probe holder. The height adjustment seat is adjusted on the base by a lead screw, and the adjustable probe holder is pressed down on the height adjustment seat by the pressing cylinder, so as to enable the detection probe to detect the square battery that has reached the detection position.

[0014] The height of the test probe can be adjusted using the height adjustment seat and lead screw to accommodate square batteries of different heights; the pressure cylinder enables rapid completion of the pressure test operation.

[0015] Based on the above, the adjustable probe holder includes a cylinder plate and a probe plate. The cylinder plate is connected to the pressing cylinder. The cylinder plate is provided with an oblong hole, and the probe plate is provided with equally spaced adjustment holes. The cylinder plate and the probe plate are bolted together.

[0016] By attaching the oblong holes at different positions and the equally spaced adjustment holes, the horizontal position and spacing of the detection probe can be adjusted.

[0017] Based on the above, the probe board is equipped with a first photoelectric sensor for detecting whether the square battery is in place at the detection position.

[0018] The square battery can be automatically detected by using a first photoelectric sensor to check if it is in place.

[0019] Based on the above, the device further includes a buffer conveyor belt, the transport direction of which is perpendicular to the transport direction of the detection conveyor belt, and the inlet of the buffer conveyor belt is located at the end of the detection conveyor belt.

[0020] By feeding the square batteries onto the buffer conveyor belt, it is convenient for the square batteries to be transferred to the next process by manual or mechanical means.

[0021] Based on the above, the end of the detection conveyor belt is provided with a pushing component, which includes a pushing base, a rodless cylinder, a rotary cylinder, and a pushing block. The rodless cylinder slides on the pushing base along the conveying direction of the detection conveyor belt. The rotary cylinder is mounted on the rodless cylinder, and the pushing block is mounted on the rotary cylinder. After rotating, the pushing block is located inside the adjustable side guardrail and is used to push the square battery that has reached the pushing position to the buffer conveyor belt.

[0022] By leveraging the synergistic effect of components within the push module, square batteries can be pushed from the detection conveyor belt to the buffer conveyor belt.

[0023] Based on the above, the adjustable side guardrail is equipped with a second photoelectric sensor to detect whether the square battery is in the correct push position.

[0024] The automatic pushing of the pusher component can be achieved by detecting whether the square battery is in place using a second photoelectric sensor.

[0025] Based on the above, the buffer conveyor belt adopts a step-forward conveyor belt, and a third photoelectric sensor is provided at the inlet of the buffer conveyor belt to detect the entry of the square battery and cause the buffer conveyor belt to move one step.

[0026] By detecting whether the square batteries are in place using a third photoelectric sensor, automated buffering of the square batteries can be achieved; and by using a step-type buffer conveyor belt, square batteries can be stored efficiently. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of the overall structure of this utility model; Figure 2 This is a top view schematic diagram of the overall structure of this utility model; Figure 3 This is a three-dimensional view of the adjustable pressing platform of this utility model; Figure 4 This is a frontal view of the adjustable pressing platform of this utility model; Figure 5 This is a three-dimensional view of the push component of this utility model.

[0028] In the figure, the attached figures are labeled as follows: Detection conveyor belt 1, detection probe 2, adjustable side guardrail 3, fixed guardrail 31, movable guardrail 32, adjustable pressing platform 4, base 41, height adjustment seat 42, pressing cylinder 43, cylinder plate 44, probe plate 45, buffer conveyor belt 5, pushing assembly 6, pushing base 61, rodless cylinder 62, rotary cylinder 63, push block 64, manual feeding platform 7, first photoelectric sensor 81, second photoelectric sensor 82, third photoelectric sensor 83, square battery 9. Detailed Implementation

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0030] Example 1 like Figures 1-5 As shown, the internal resistance testing device for various types of new energy batteries in this embodiment includes a testing conveyor belt 1. The testing conveyor belt 1 can be used to feed square batteries 9 manually or mechanically. For example, Figure 1 As shown in the figure, a manual feeding platform 7 is provided at the entrance end of the inspection conveyor belt 1. Square batteries 9 are fed from one side of the inspection conveyor belt 1 by manual pushing.

[0031] The testing device also includes an adjustable pressing platform 4, on which a detection probe 2 is mounted. The square battery 9 is conveyed on the detection conveyor belt 1 to the area below the detection probe 2, and then the detection probe 2 is driven by the adjustable pressing platform 4 to press down and test the square battery 9.

[0032] To ensure the accuracy of the conveying direction of the square battery 9 on the inspection conveyor belt 1, an adjustable side guardrail 3 parallel to its transport direction is provided above the inspection conveyor belt 1. The adjustable side guardrail 3 is used to limit the position of the square battery 9 when it is transported on the inspection conveyor belt 1.

[0033] Thus, the width of the adjustable side guardrail 3 can be flexibly adjusted to accommodate square batteries 9 of different widths or lengths. Specifically, after adjusting the width of the adjustable side guardrail 3 according to a batch of square batteries 9 of the same width or length, this batch of square batteries 9 can be conveyed on the inspection conveyor belt 1 with its own width or length direction as the conveying direction. Furthermore, the adjustable side guardrail 1 limits the position of the square batteries 9 from both sides, ensuring that the square batteries 9 always pass under the inspection probe 2 of the adjustable pressing platform 4. When the inspection probe 2 presses down, it can accurately detect the positive and negative terminals of the square batteries 9. After this batch of square batteries 9 has been inspected, the adjustable side guardrail 3 can adjust its width according to the next batch of square batteries 9 of the same width or length for the next batch of square batteries 9 to be inspected.

[0034] For example, the width between the side guardrails 3 can be adjusted by adding 2 to 3 millimeters to the length or width specifications of the square battery 9 to ensure the accuracy of the detection position of the square battery 9.

[0035] On the other hand, in order to ensure the accuracy of the detection probe 2 in locating the positive and negative terminals of the square battery 9 when it is pressed down, the detection probe 2 is positioned above the adjustable side guardrail 3. The adjustable pressing platform 4 can adjust the position of the detection probe 2 on the adjustable pressing platform 4, and the adjustable pressing platform 4 can drive the detection probe 2 to press down for detecting the square battery 9.

[0036] In this way, the position of the detection probe 2 can be flexibly adjusted by the adjustable pressing platform 4 to accommodate square batteries 9 with different height specifications and positive and negative electrode spacing specifications. Specifically, the detection probe 2 is mounted on the adjustable pressing platform 4, which can adjust the height position, horizontal position, and spacing between the two detection probes 2, so that the square battery 9 can always pass under the detection probe 2 of the adjustable pressing platform 4. When the detection probe 2 is pressed down, it can accurately detect the positive and negative electrodes of the square battery 9. Furthermore, when replacing the next batch of square batteries 9, the height position, horizontal position, and spacing between the two detection probes 2 can be adjusted again to adapt to the height specifications and positive and negative electrode spacing specifications of the next batch of square batteries 9.

[0037] The testing device of this application transports square batteries 9 via a detection conveyor belt 1 and uses an adjustable side guardrail 3 to adjust the position of the square batteries 9 on the detection conveyor belt 1 during transport, enabling square batteries 9 of different widths or lengths to be delivered to the accurate detection position. Then, an adjustable pressing platform 4 is used to adjust the height, horizontal position, and spacing of the detection probes 2, driving the detection probes 2 to press down at the accurate detection position, enabling the detection probes 2 to accurately align with square batteries 9 of different heights and different positive and negative electrode spacings. Therefore, this device can automatically test the internal resistance of batteries and can also meet the internal resistance measurement needs of various battery models, with a wide range of applications.

[0038] Example 2 Based on Embodiment 1, two detection probes 2 are arranged back and forth along the conveying direction of the detection conveyor belt 1, and adjustable side guardrails 3 are used to limit the position from both sides of the square battery 9 in the width direction.

[0039] In this way, the square battery 9 is conveyed by the detection conveyor belt 1 with its length direction as the conveying direction, which enables the adjustable side guardrail 3 to more accurately limit the position of the square battery 9 and also prevents the square battery 9 from tipping over.

[0040] Example 3 Based on the above embodiments, the adjustable side guardrail 3 includes a fixed guardrail 31 and a movable guardrail 32. The movable guardrail 32 adjusts its distance from the fixed guardrail 31 by means of a lead screw. An adjustment handle can be provided on the lead screw. Guide shafts and linear bearings can also be provided on both sides of the lead screw on the movable guardrail 32 to ensure the accuracy of the movable guardrail 32 during adjustment and to avoid skewing.

[0041] The adjustable pressure platform 4 is mounted above the inspection conveyor belt 1 from one side of the fixed guardrail 31 to avoid interference between the adjustable pressure platform 4 and the adjustable side guardrail 3 when they are adjusted.

[0042] The spacing of the adjustable side guardrail 3 can be adjusted by the fixed guardrail 31, the movable guardrail 32 and the screw, which is simple to operate and easy to implement; the adjustable pressing platform 4 is set on one side of the fixed guardrail 31 to avoid mutual interference during adjustment.

[0043] Example 4 Based on the above embodiments, the adjustable pressing platform 4 includes a base 41, a height adjustment seat 42, a pressing cylinder 43, and an adjustable probe holder. The height adjustment seat 42 is adjusted on the base 41 by a lead screw, and an adjustment handle can be provided on the lead screw. The adjustable probe holder is pressed down on the height adjustment seat 42 by the pressing cylinder 43, so that the detection probe 2 can detect the square battery 9 that has reached the detection position.

[0044] The pressing cylinder 43 can be a rodless cylinder, which can run on two parallel slide bars of the height adjustment seat 42. The rodless cylinder drives the adjustable probe frame to press down.

[0045] The height of the detection probe 2 can be adjusted by the height adjustment seat 42 and the lead screw to accommodate square batteries 9 of different heights; the pressing cylinder 43 can quickly complete the pressing detection operation.

[0046] Example 5 Based on embodiment 4, the adjustable probe holder includes a cylinder plate 44 and a probe plate 45. The detection probe 2 is mounted on the probe plate 45. The cylinder plate 44 is connected to the pressing cylinder 43. The cylinder plate 44 is provided with a waist-shaped hole, and the probe plate 45 is provided with equally spaced adjustment holes. The cylinder plate 44 and the probe plate 45 are bolted together through the waist-shaped hole and the equally spaced adjustment holes. The waist-shaped hole and the equally spaced adjustment holes are perpendicular to each other. This allows the distance between the two probe plates 45 to be adjusted on the one hand, and the horizontal position of the probe plate 45 to be adjusted on the other hand.

[0047] For example, the cylinder plate 44 is provided with two waist-shaped holes arranged along the transport direction of the detection conveyor belt 1. The two waist-shaped holes are collinear and arranged one in front of the other in the transport direction. The probe plate 45 is provided with equally spaced adjustment holes along its length. By bolting the waist-shaped holes and equally spaced adjustment holes at different positions, the horizontal position and spacing of the detection probe 2 can be adjusted.

[0048] Example 6 Based on embodiment 5, the probe plate 45 is provided with a first photoelectric sensor 81, which is used to detect whether the square battery 9 has reached the detection position. For example, when the square battery 9 is detected to have reached the detection position, the square battery 9 can be stopped at the detection position by stopping the detection conveyor belt 1. The pressing platform 4 can be adjusted to press down to complete the detection, thereby realizing the automated detection of the square battery 9.

[0049] Example 7 Based on embodiment 2, the device further includes a buffer conveyor belt 5, the transport direction of the buffer conveyor belt 5 is perpendicular to the transport direction of the detection conveyor belt 1, the inlet of the buffer conveyor belt 5 is located at the end of the detection conveyor belt 1, and the square batteries 9 are arranged laterally on the buffer conveyor belt 5, which can store more detected square batteries 9.

[0050] After the inspection is completed, the square battery 9 is sent to the buffer conveyor belt 5, which facilitates the transfer of the square battery 9 to the next process by manual or mechanical means.

[0051] Example 8 Based on embodiment 7, a pushing component 6 is provided at the end of the detection conveyor belt 1. The pushing component 6 includes a pushing base 61, a rodless cylinder 62, a rotary cylinder 63, and a pushing block 64. The rodless cylinder 62 slides on the pushing base 61 along the conveying direction of the detection conveyor belt 1. The rotary cylinder 63 is installed on the rodless cylinder 62. The pushing block 64 is installed on the rotary cylinder 63. After rotating, the pushing block 64 is located inside the adjustable side guardrail 3 and is used to push the square battery 9 that has reached the pushing position to the buffer conveyor belt 5.

[0052] The push component 6 can be set on one side of the fixed guardrail 32. The fixed guardrail 32 can be provided with a push groove. After the push block 64 rotates, it pushes the square battery 9 in the push groove. When the push component 6 pushes the square battery 9, the square battery 9 is still constrained by the adjustable side guardrail 3.

[0053] When feeding the square batteries 9 onto the inspection conveyor belt 1, a certain gap can be made between the square batteries 9, so that the pusher block 64 can rotate into this gap to push the square batteries 9.

[0054] The detection conveyor belt 1 and the buffer conveyor belt 5 are designed to detect a height difference between them, so as to achieve pushing from high to low, for example, a height difference of 2mm between them.

[0055] Through the coordinated action of the components within the push assembly 6, the square battery 9 can be pushed from the detection conveyor belt 1 to the buffer conveyor belt 5.

[0056] Example 9 Based on embodiment 8, the adjustable side guardrail 3 is equipped with a second photoelectric sensor 82, which is used to detect whether the square battery 9 is in the push position. When the square battery 9 is detected, it will be further conveyed forward. When it is conveyed to the position after the push block 64, the second photoelectric sensor 82 gives a signal, causing the push block 64 to rotate and push the square battery 9 into the buffer conveyor belt 5, thereby realizing the automatic push of the push component 6.

[0057] Example 10 Based on Embodiments 7, 8, or 9, the buffer conveyor belt 5 adopts a step-forward conveyor belt. A third photoelectric sensor 83 is provided at the inlet of the buffer conveyor belt 5 to detect the entry of the square battery 9 and cause the buffer conveyor belt 5 to move one step distance, thereby realizing the automatic buffering of the square battery 9. The conveying step distance of the buffer conveyor belt 5 is based on the maximum width of the square battery 9 plus a margin, so that the buffer conveyor belt 6 can store more square batteries 9 and make the storage of square batteries 9 more efficient.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A new energy battery internal resistance testing device suitable for multiple models, characterized in that, The device includes a detection conveyor belt (1) and an adjustable pressing platform (4). An adjustable side guardrail (3) is provided above the detection conveyor belt (1) and parallel to its transport direction. The adjustable side guardrail (3) is used to limit the position of the square battery (9) when it is transported on the detection conveyor belt (1). A detection probe (2) is installed on the adjustable pressing platform (4). The detection probe (2) is located above the adjustable side guardrail (3). The adjustable pressing platform (4) can adjust the position of the detection probe (2) on the adjustable pressing platform (4). The adjustable pressing platform (4) can drive the detection probe (2) to press down for detecting the square battery (9). 2.The new energy battery internal resistance testing device suitable for multiple models according to claim 1, wherein, The two detection probes (2) are arranged one after the other along the conveying direction of the detection conveyor belt (1), and the adjustable side guardrails (3) are used to limit the position from both sides of the square battery (9) in the width direction.

3. The internal resistance testing device for various types of new energy batteries according to claim 1 or 2, characterized in that, The adjustable side guardrail (3) includes a fixed guardrail (31) and a movable guardrail (32). The movable guardrail (32) adjusts its distance from the fixed guardrail (31) by means of a screw. The adjustable pressing platform (4) is erected above the detection conveyor belt (1) from one side of the fixed guardrail (31).

4. The internal resistance testing device for various types of new energy batteries according to claim 1, characterized in that, The adjustable pressing platform (4) includes a base (41), a height adjustment seat (42), a pressing cylinder (43), and an adjustable probe holder. The height adjustment seat (42) is adjusted on the base (41) by a lead screw. The adjustable probe holder is pressed down on the height adjustment seat (42) by the pressing cylinder (43) to enable the detection probe (2) to detect the square battery (9) that has reached the detection position.

5. The internal resistance testing device for various types of new energy batteries according to claim 4, characterized in that, The adjustable probe holder includes a cylinder plate (44) and a probe plate (45). The cylinder plate (44) is connected to the pressing cylinder (43). The cylinder plate (44) has a waist-shaped hole, and the probe plate (45) has equally spaced adjustment holes. The cylinder plate (44) and the probe plate (45) are bolted together.

6. The internal resistance testing device for various types of new energy batteries according to claim 5, characterized in that, The probe plate (45) is equipped with a first photoelectric sensor (81) for detecting whether the square battery (9) is in the detection position.

7. The internal resistance testing device for various types of new energy batteries according to claim 2, characterized in that, The device also includes a buffer conveyor belt (5), the transport direction of which is perpendicular to the transport direction of the detection conveyor belt (1), and the inlet of the buffer conveyor belt (5) is located at the end of the detection conveyor belt (1).

8. The internal resistance testing device for various types of new energy batteries according to claim 7, characterized in that, The end of the detection conveyor belt (1) is provided with a pushing component (6). The pushing component (6) includes a pushing base (61), a rodless cylinder (62), a rotary cylinder (63), and a pushing block (64). The rodless cylinder (62) slides on the pushing base (61) along the conveying direction of the detection conveyor belt (1). The rotary cylinder (63) is installed on the rodless cylinder (62). The pushing block (64) is installed on the rotary cylinder (63). After rotation, the pushing block (64) is located inside the adjustable side guardrail (3) and is used to push the square battery (9) that has reached the pushing position to the buffer conveyor belt (5).

9. The internal resistance testing device for various types of new energy batteries according to claim 8, characterized in that, The adjustable side guardrail (3) is equipped with a second photoelectric sensor (82) for detecting whether the square battery (9) is in the push position.

10. The internal resistance testing device for various types of new energy batteries according to claim 7, 8, or 9, characterized in that, The buffer conveyor belt (5) is a step-forward conveyor belt. A third photoelectric sensor (83) is provided at the inlet of the buffer conveyor belt (5) to detect the entry of the square battery (9) and cause the buffer conveyor belt (5) to move one step.

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