A kind of OCV testing device of stepless regulation
The stepless adjustable OCV testing device, through the first and second pitch-changing mechanisms, combined with a power source and detection components, solves the problems of bulky mechanisms and positioning errors in existing cell testing devices, and realizes non-destructive compatibility testing of cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏烽禾升智能科技有限公司
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-10
AI Technical Summary
Existing battery cell OCV testing equipment requires multiple servo pitch control mechanisms, resulting in bulky mechanisms, motion interference, large positioning errors, battery cell damage and scratches, and difficulty in testing different products.
The OCV testing device, which adopts stepless adjustment, uses a first pitch-changing mechanism and two second pitch-changing mechanisms, combined with a power source, connector, detection components and floating module, to adapt to the testing of cells with different spacing without the need for manual probe replacement, thus avoiding cell damage caused by positioning errors.
It achieves stepless adjustment of OCV testing, avoids cell damage, improves repeatability and compatibility, and reduces mechanical complexity and manual intervention.
Smart Images
Figure CN224480556U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of battery performance testing devices, and in particular to a stepless adjustable OCV testing device. Background Technology
[0002] Cell OCV (Open Circuit Voltage) testing is a crucial step in battery performance testing, and it is the first testing station on every battery module production line, making it one of the key stations on the entire battery module production line.
[0003] The existing cell OCV pitch change test mechanism requires an independent X-axis servo pitch change mechanism and a Y-axis servo pitch change mechanism for each cell, i.e., one servo pitch change mechanism is set in each of the two directions. Since the battery module contains multiple cells, multiple servo pitch change mechanisms are required for each cell to achieve OCV testing that is compatible with different cells.
[0004] However, multiple servo pitch-changing mechanisms have the following shortcomings: 1. The mechanism is bulky, and there is motion interference during installation and pitch changing; 2. There are blind spots that cannot be reached in the test position, and the repositioning error is large, which causes the poles of some cells to rub against each other during OCV testing, resulting in damage and scratches; 3. The repeatability accuracy is relatively poor, and the blue film of the cells may be scratched or torn during debugging; 4. When some products are changed, it is necessary to manually replace the testing components, etc., to achieve product testing compatibility. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model discloses a steplessly adjustable OCV testing device.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A stepless adjustable OCV testing device, comprising:
[0008] A first pitch-changing mechanism is mounted on a mounting plate; the first pitch-changing mechanism has two first movable parts with opposite directions of movement.
[0009] At least one second pitch-changing mechanism is connected to the first movable part; the second pitch-changing mechanism includes a power source and two connecting seats that are drively connected to the power source; the first pitch-changing mechanism drives the second pitch-changing mechanism to move in a first direction, and the power source drives the two connecting seats to move closer or further apart in a second direction.
[0010] A detection component is fixed to the side of the connector away from the power source; the detection component includes a floating module and at least one probe mounted on the floating module.
[0011] In one embodiment of the present invention, the floating module includes a mounting base fixedly connected to the connecting seat, an adjusting block fixedly connected to the mounting base, an elastic element fixed at one end to the adjusting block, a floating block fixedly connected to the other end of the elastic element, a stroke pin installed on the floating block, and a probe installed on the connecting seat.
[0012] In one embodiment of this utility model, the adjusting block and the floating block are arranged horizontally along the second direction.
[0013] In one embodiment of this utility model, the elastic element is a spring.
[0014] In one embodiment of this utility model, the second pitch-changing mechanism further includes a sliding plate, a linear guide rail assembly, and a connecting block slidably connected to the linear guide rail assembly; the sliding plate is connected to the movable part of the power source; the connecting seat is movably connected to the sliding plate; and the connecting block is fixedly connected to the connecting seat.
[0015] In one embodiment of the present invention, the second pitch mechanism further includes a limiting element; the sliding plate has a waist-shaped groove along the second direction, and the limiting element and the waist-shaped groove are in rolling cooperation.
[0016] In one embodiment of the present invention, at least one displacement measuring component is further included; the displacement measuring component is used to measure the displacement of the first movable part or the connecting seat.
[0017] In one embodiment of the present invention, a temperature measuring component is further included, which is fixed to the connecting base; the temperature measuring component is used to measure temperature.
[0018] In one embodiment of this utility model, a barcode scanner is also included; the barcode scanner is fixed to the side of the connector away from the power source.
[0019] In one embodiment of the present invention, a connecting flange fixed to the mounting plate is further included; the connecting flange is used to connect a third drive assembly, the third drive assembly driving the mounting plate to move upward in a third direction.
[0020] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:
[0021] The stepless adjustable OCV testing device of this invention can meet the OCV testing requirements of cells with different spacing without the need for manual replacement of probe components, completely avoiding damage to the cells caused by positioning errors and the problem of incompatibility with OCV testing of different products. Attached Figure Description
[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0023] Figure 1 This is a first-view structural schematic diagram of the stepless adjustable OCV testing device of this utility model.
[0024] Figure 2 This is a second-view structural schematic diagram of the stepless adjustable OCV testing device in this utility model.
[0025] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.
[0026] Figure 4 This is a schematic diagram of the detection component in this utility model.
[0027] Figure 5 This is a schematic diagram of the stepless adjustment OCV testing device in this utility model.
[0028] Explanation of reference numerals in the instruction manual:
[0029] 101. First drive source; 102. First ball screw; 103. First nut seat; 104. Second nut seat; 105. Mounting plate;
[0030] 201. Second drive source; 202. Third drive source; 203. First linear guide rail assembly; 204. Second linear guide rail assembly; 205. First sliding plate; 206. Second sliding plate; 207. Connecting block; 208. Connecting seat; 209. Limiting element; 210. Detection assembly; 2101. Mounting seat; 2102. Adjusting block; 2103. Elastic element; 2104. Floating block; 2105. Probe; 2106. Stroke pin; 211. Barcode scanner;
[0031] 31. First displacement measuring component; 32. Second displacement measuring component; 33. Third displacement measuring component; 34. Temperature measuring component;
[0032] 40. Connecting flange;
[0033] 50. Battery cells. Detailed Implementation
[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0035] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. Furthermore, in all embodiments, the same reference numerals denote the same elements.
[0036] Combination Figure 1 and Figure 2 This embodiment provides a steplessly adjustable OCV testing device, including a first pitch mechanism and two second pitch mechanisms. The first pitch mechanism drives the second pitch mechanisms to move in a first direction.
[0037] The first pitch-changing mechanism includes a first drive source 101, a first ball screw 102, a first nut seat 103, and a second nut seat 104. The output end of the first drive source 101 is connected to the first ball screw 102. The first nut seat 103 and the second nut seat 104 are threadedly connected to the first ball screw 102, and the first nut seat 103 and the second nut seat 104 move in opposite directions. Therefore, it can be understood that the first nut seat 103 and the second nut seat 104 are the first movable parts.
[0038] The first mounting plate 105 has channels for the movement of the first nut seat 103 and the second nut seat 104. To describe the relationships between the various components, a local coordinate system is established, with the length direction of the first mounting plate 105 as the x-axis and the width direction of the first mounting plate 105 as the y-axis, as shown below. Figure 1 and Figure 2 As shown, the first direction is the y-axis direction, and the second direction is the x-axis direction.
[0039] One of the second pitch-changing mechanisms includes a second drive source 201, a first sliding plate 205, a connecting seat 208, and a detection component 210. The output end of the second drive source 201 is connected to a second ball screw (not shown in the figure). The second ball screw is threadedly connected to a positive / negative nut seat, and the second drive source 201 drives the positive / negative nut seats to move closer or further away from each other. The positive / negative nut seats are connected to the first sliding plate 205. The first sliding plate 205 is movably connected to the connecting seat 208. The detection component 210 is fixed to the side of the connecting seat 208 away from the second drive source 201.
[0040] Another second pitch-changing mechanism includes a third drive source 202, a second sliding plate 206, and a detection component 210. The output end of the third drive source 202 is connected to a third ball screw (not shown in the figure), which is threadedly connected to a positive / negative nut seat. The third drive source 202 drives the positive / negative nut seats to move closer or further away from each other. The positive / negative nut seats are connected to the second sliding plate 206. The detection component 210 is fixed to the side of the connecting seat 208 away from the second drive source 201.
[0041] The second pitch-changing mechanism also includes two first linear guide rail assemblies 203, one second linear guide rail assembly 204, and multiple connecting blocks 207. The first linear guide rail assembly 203 is movably connected to the first sliding plate 205 and the second sliding plate 206, while the second linear guide rail assembly 204 is fixedly connected to both the first sliding plate 205 and the second sliding plate 206. The connecting blocks 207 are fixedly connected to both the first linear guide rail assembly 203 and the second linear guide rail assembly 204. The connecting blocks 207 are fixedly connected to the connecting seats 208, and the number of connecting blocks 207 is the same as the number of connecting seats 208; that is, the number of connecting blocks 207 is designed based on the number of connecting seats 208. Specifically, the first linear guide rail assembly 203 and the second linear guide rail assembly 204 have the same structure, both including a linear guide rail arranged along a second direction and a slider that slides with the linear guide rail; therefore, the connecting blocks 207 and the slider are fixedly connected.
[0042] The linear guides of the two first linear guide assemblies 203 are fixedly connected to the first nut seat 103 and the second nut seat 104 respectively.
[0043] A sliding module is provided on the mounting plate 105 in the first direction. The sliding module is slidably connected to both the first linear guide rail assembly 203 and the second linear guide rail assembly 204. Specifically, the sliding module includes a guide rail fixed to the mounting plate 105 and a slider that slides with the guide rail. The slider of the sliding module is fixedly connected to the linear guide rail of the second pitch-changing mechanism.
[0044] like Figure 4As shown, the detection component 210 includes a floating module and at least one probe 2105 mounted on the floating module. Specifically, the floating module includes a mounting base 2101 fixedly connected to the connecting base 208, an adjusting block 2102 fixed to the mounting base 2101, an elastic element 2103 fixed at one end to the adjusting block 2102, a floating block 2104 fixedly connected to the other end of the elastic element 2103, a stroke pin 2106 mounted on the floating block 2104, and a probe 2105 mounted on the connecting base 208. The adjusting block 2102 and the floating block 2104 are horizontally arranged, and the position of the adjusting block 2102 on the connecting base 208 is adjustable. When the travel pin 2106 is subjected to excessive pressure, the elastic element 2103 is compressed, and the elastic element 2103 drives the floating block 2104 to move upward. The relative movement between the probe 2105 and the terminal of the battery cell 50 is buffered, thereby avoiding direct rigid collision. The floating module ensures that the probe 2105 and the terminal of the battery cell 50 do not rub against the terminal of the battery cell 50 within a certain pressure range, thus preventing damage and scratches.
[0045] In this embodiment, the first drive source 101, the second drive source 201, and the third drive source 202 are all commercially available servo motors, and the model and power of the servo motors can be selected and adjusted by those skilled in the art as needed.
[0046] Furthermore, such as Figure 3 As shown, the second drive assembly also includes a limiting element 209. Both the first sliding plate 205 and the second sliding plate 206 have oblong grooves along the second direction, and the limiting element 209 rolls into the oblong grooves. The limiting element 209 can be a bearing, so when the first sliding plate 205 and the second sliding plate 206 move in the first direction, the bearing rolls within the oblong groove.
[0047] Furthermore, the infinitely variable displacement (OCV) testing device also includes a first displacement measuring component 31, a second displacement measuring component 32, and a third displacement measuring component 33. The first displacement measuring component 31 measures the displacement of the first nut seat 103. The second displacement measuring component 32 and the third displacement measuring component 33 are respectively used to measure the displacement of the nut seats of the two second pitch-changing mechanisms. Each of the first displacement measuring component 31, the second displacement measuring component 32, and the third displacement measuring component 33 includes a mating magnetic scale and a reading head. When a moving part (such as the first nut seat 103) moves along the magnetic scale, the reading head senses the change in the magnetic field on the magnetic scale. The reading head converts the change in magnetic field strength into an electrical signal, thereby achieving displacement measurement.
[0048] Furthermore, the stepless compatible OCV testing device also includes a temperature measuring component 34 fixed to the connector 208. The temperature measuring component 34 is used to measure the surface temperature of the battery cell 50. In this embodiment, the temperature measuring component 34 is a non-contact infrared temperature measuring component, which detects the infrared radiation energy emitted by the surface of the battery cell 50, converts it into an electrical signal, and calculates the surface temperature of the object through signal processing.
[0049] Furthermore, the stepless compatible OCV testing device also includes a barcode scanner 211. The barcode scanner 211 is fixed to the side of the connector 208 away from the power source. The barcode scanner 211 scans the battery cell 50 to confirm its model. It should be noted that the installation position of the barcode scanner 211 does not affect the OCV testing of the battery cell 50 by the testing component 210.
[0050] Furthermore, the infinitely variable adjustable OCV testing device also includes a connecting flange 40 fixed to the mounting plate 105. The connecting flange 40 is used to connect a third drive assembly, which drives the mounting plate 105 to move in a third direction. It should be noted that the third direction refers to the height direction of the mounting plate 105, so the connecting flange 40 can be connected to a commercially available electric cylinder to drive the entire device to move up and down.
[0051] like Figure 5 As shown, the working principle of this embodiment is as follows:
[0052] The first and second pitch-changing mechanisms adjust the pitch according to the model of the battery cell 50 to be tested. When the battery cell 50 reaches the predetermined electrode test position, the barcode scanner 211 scans the barcode to confirm the model of the battery cell 50. Then, the electric cylinder controls the entire device to descend, and the detection component 210 contacts the electrode of the battery cell 50 for testing.
[0053] The infinitely compatible OCV testing device provided by this utility model reduces the need for servo pitch mechanism, detection component and temperature measurement component. Through the first pitch mechanism and two second pitch mechanisms (equipped with displacement measurement components), it can be compatible with multiple battery cells 50 placed in different positions on the tray. The different sizes and specifications of the battery cells 50 and the different spacing between the positive and negative terminals of the battery cells 50 do not affect the contact between the probe 2105 of the detection component 210 and the terminals of the battery cells 50, while ensuring the corresponding repeatability and positioning accuracy.
[0054] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A steplessly adjustable OCV testing device, characterized in that, include: The first pitch-changing mechanism is mounted on the mounting plate (105); the first pitch-changing mechanism has two first movable parts with opposite directions of movement; At least one second pitch mechanism is connected to the first movable part; the second pitch mechanism includes a power source and two connecting seats (208) that are drively connected to the power source; the first pitch mechanism drives the second pitch mechanism to move in a first direction, and the power source drives the two connecting seats (208) to move relatively close to or far apart in a second direction; The detection component (210) is fixed to the side of the connector (208) away from the power source; the detection component (210) includes a floating module and at least one probe (2105) mounted on the floating module.
2. The steplessly adjustable OCV testing device according to claim 1, characterized in that, The floating module includes a mounting base (2101) fixedly connected to the connecting seat (208), an adjusting block (2102) fixed to the mounting base (2101), an elastic element (2103) fixed at one end to the adjusting block (2102), a floating block (2104) fixedly connected to the other end of the elastic element (2103), a stroke pin (2106) installed on the floating block (2104), and a probe (2105) installed on the connecting seat (208).
3. The steplessly adjustable OCV testing device according to claim 2, characterized in that, The adjusting block (2102) and the floating block (2104) are horizontally arranged along the second direction.
4. The steplessly adjustable OCV testing device according to claim 2, characterized in that, The elastic element (2103) is a spring.
5. The steplessly adjustable OCV testing device according to claim 1, characterized in that, The second pitch mechanism further includes a sliding plate, a linear guide rail assembly, and a connecting block (207) slidably connected to the linear guide rail assembly; the sliding plate is connected to the movable part of the power source; the connecting seat (208) is movably connected to the sliding plate; and the connecting block (207) is fixedly connected to the connecting seat (208).
6. The steplessly adjustable OCV testing device according to claim 5, characterized in that, The second pitch mechanism further includes a limiting element (209); the sliding plate has a waist-shaped groove along the second direction, and the limiting element (209) and the waist-shaped groove are in rolling cooperation.
7. The steplessly adjustable OCV testing device according to claim 1, characterized in that, It also includes at least one displacement measuring component; the displacement measuring component is used to measure the displacement of the first movable part or the connecting seat (208).
8. The steplessly adjustable OCV testing device according to claim 1, characterized in that, It also includes a temperature measuring component (34) fixed to the connector (208); the temperature measuring component (34) is used to measure temperature.
9. The steplessly adjustable OCV testing device according to claim 1, characterized in that, It also includes a barcode scanner (211); the barcode scanner (211) is fixed to the side of the connector (208) away from the power source.
10. The steplessly adjustable OCV testing device according to claim 1, characterized in that, It also includes a connecting flange (40) fixed to the mounting plate (105); the connecting flange (40) is used to connect a third drive assembly, which drives the mounting plate (105) to move upward in a third direction.