Battery piece testing tool
By using busbars and clamping mechanisms in the photovoltaic cell testing system, the problem of complex probe bar cables is solved, resulting in higher testing stability and faster maintenance efficiency.
Patent Information
- Application Number
- CN202520380994.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing photovoltaic cell testing systems, the probe arrays and cables are complex, resulting in unstable testing accuracy. The cables are prone to loosening or breaking, and replacing the probe arrays is time-consuming, affecting testing efficiency.
Busbars are arranged on both sides of the substrate, and the probes are connected to the busbars at both ends to reduce the number of cables. The probes and busbars can be independently disassembled and limited by a clamping mechanism to avoid cable interference.
It improves test stability, reduces errors caused by messy cables, shortens maintenance time, and increases test speed.
Smart Images
Figure CN223883725U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic cell field, in particular to a cell piece test tool. BACKGROUND
[0002] In the solar photovoltaic cell manufacturing industry, after the electrode is made by silk screen printing, the cell piece needs to be tested for electrical performance and electroluminescence (EL) to be graded. At present, the mainstream photovoltaic cell has main grid lines arranged in basic symmetry on the front and back surfaces, and when testing, the upper and lower probe rows correspond to and align with the main grid lines one by one, so that the probes contact the main grid lines or their PAD points to perform testing.
[0003] Currently, the probe row generally needs to be connected to two cables for testing. Specifically, by connecting the two cables of the probe row to the current end and the voltage end of the testing instrument respectively, and allowing the probes provided on the probe row to contact the cell piece, the current parameters and voltage parameters in the cell piece are obtained. Taking common 182mm*182mm and 210mm*210mm photovoltaic cell pieces as examples, there are at least 10 main grid lines, and accordingly, the number of probe rows needs to correspond to them, and then when the front and back surfaces of the cell piece need to be tested, a total of 20 or more cables are needed on the testing mechanism, which will cause the conductor cables in the entire testing system to be relatively complicated. When the testing mechanism drives the probe row to continuously move up and down during testing, the cables will move frequently, which will easily cause loosening, breakage, etc., affecting the testing accuracy. Moreover, when the damaged probe row is replaced, since the conductor cables are entangled, the conductor cables need to be arranged, which consumes a lot of time. In addition, in order to avoid the interference of the replacement process to other conductor cables, so as to cause large errors in subsequent test data, and then after the replacement is completed, the testing needs to be re-adjusted, which will also prolong the testing time.
[0004] Therefore, a cell piece testing tool is needed to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a cell piece testing tool to reduce the number of cables needed, improve the stability of testing, and correspondingly shorten the time consumed for maintenance, and improve the testing rate.
[0006] To solve the above technical problems, the utility model provides a cell piece testing tool, which comprises a substrate, a bus bar, a probe row, and a pressing mechanism.
[0007] The bus bar is arranged on both sides of the substrate, and both bus bars are electrically connected to an external testing instrument through cables.
[0008] The probe row is provided with multiple groups, and both ends of the multiple groups of probe rows are connected with the upper surfaces of the two bus bars;
[0009] When the multiple groups of probe rows are in contact with the battery piece to be tested, the current and voltage parameters of the battery piece to be tested can be output to the two bus bars respectively.
[0010] The pressing mechanism is arranged on the substrate and can move relative to the bus bar and be self-locked to form a clamping gap with the bus bar for limiting the end of the probe row or be separated from the probe row.
[0011] Further, the probe row includes a connecting plate, current probes, voltage probes, a current bus bar, and a voltage bus bar.
[0012] The connecting plate is lapped on the two bus bars;
[0013] The current probes and the voltage probes are provided in multiple groups and are arranged in a staggered manner in the middle of the connecting plate, and the ends extend to the outside of the substrate to be connected with the battery piece to be tested for current and voltage parameter acquisition.
[0014] The current bus bar and the voltage bus bar are arranged on the outer wall of the connecting plate and are connected with the corresponding multiple current probes and multiple voltage probes respectively.
[0015] The ends of the current bus bar and the voltage bus bar extend to both ends of the connecting plate to be electrically connected with the corresponding bus bars respectively.
[0016] Further, the ends of the current bus bar and the voltage bus bar each have an elastic conductive contact connected with the bus bar.
[0017] Further, the elastic conductive contact is a U-shaped elastic sheet.
[0018] Further, the middle part of the substrate is provided with an opening for the extension of the current probes and the voltage probes.
[0019] Further, the number of the pressing mechanisms matches the number of the probe rows.
[0020] The pressing mechanism includes two sliders and a locking member.
[0021] The slider is slidingly installed on the substrate and can slide over the bus bar or retract to the side where the two bus bars are away from each other to form the clamping gap with the bus bar or be separated from the probe row.
[0022] The locking member is arranged inside the sliding block and can extend to be clamped with the base plate, so that the sliding block is fixed with the base plate.
[0023] Further, the locking member is arranged as a screw.
[0024] Further, the sliding block is arranged as an insulating material.
[0025] Further, the probe rows are arranged at equal distances.
[0026] Further, the probe rows are perpendicular to the bus bars.
[0027] Compared with the prior art, the utility model has at least the following beneficial effects:
[0028] By arranging the bus bars on both sides of the base plate and connecting the two ends of the multiple probe rows with the two bus bars respectively, the battery piece current and voltage parameters can be collected on the two bus bars respectively, and then the bus bars are connected with the external testing instrument through the cable to output the data parameters, so that compared with the conventional mode that each probe row needs two cables to connect with the external testing instrument, the number of cables can be effectively reduced, the situation that the test tool is affected by the cable looseness or pressure breakage during operation due to the cable disorder can be effectively avoided, and the test stability is improved.
[0029] In addition, by arranging the pressing mechanism, each probe row can be independently detached from the bus bar, the probe rows are not affected by each other due to the absence of the cable interference, and the test tool can be quickly passed during subsequent debugging (such as dynamic and static testing), so that the time required for maintenance is shortened, and the test rate is improved. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is a structural schematic view of the battery piece test tool in an embodiment of the utility model;
[0031] Figure 2 It is a side view of the battery piece test tool from another perspective in an embodiment of the utility model;
[0032] Figure 3 It is a structural schematic view of the battery piece test tool in an embodiment of the utility model; Figure 2 It is an enlarged view of A in the utility model.
[0033] Reference signs: 1, base plate; 2, bus bar; 3, probe row; 31, connecting plate; 32, current probe; 33, voltage probe; 34, current bus bar; 35, voltage bus bar; 4, pressing mechanism; 41, sliding block; 42, locking member; 5, elastic conductive contact. DETAILED DESCRIPTION
[0034] The battery piece testing tool of the present application will be described in more detail below in conjunction with the schematic drawings, wherein the preferred embodiments of the present application are shown, it should be understood that the present application described herein can be modified by those skilled in the art, and the advantageous effects of the present application can still be achieved. Therefore, the following description should be understood as a broad knowledge for those skilled in the art, and not as a limitation of the present application.
[0035] The present application will be described in more detail below in conjunction with the schematic drawings. According to the following description, the advantages and features of the present application will be more apparent. It should be noted that the drawings are very simplified and non-precise, and are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the present application.
[0036] As shown in Figures 1 to 3 The present application proposes a battery piece testing tool, which comprises a substrate 1, a busbar 2, a probe row 3 and a pressing mechanism 4.
[0037] Among them, the busbar 2 is arranged on both sides of the substrate 1, and both busbars 2 are electrically connected to the external testing instrument through the cable, for receiving the data parameters transmitted by the multiple probe rows 3, and transmitting the data parameters to the external testing instrument. Compared with the prior art, the two cables on each probe row 3 are connected to the external testing instrument to transmit data parameters. In this way, the cables on the probe row 3 do not need to be set, and only two cables need to be connected to the busbar 2, which effectively avoids the situation of winding and bending and breaking of the cable during the movement of the battery piece testing tool to contact the battery piece to be tested, and improves the stability during testing.
[0038] Specifically, the probe row 3 is provided with multiple groups, and both ends of the multiple probe rows 3 are connected with the upper surfaces of the two busbars 2.
[0039] It should be particularly noted that when the multiple probe rows 3 are in contact with the battery piece to be tested, the current and voltage parameters of the battery piece to be tested can be output to the two busbars 2 respectively, that is, one busbar 2 is used to receive the current parameter of the battery to be tested, and the other busbar 2 is used to receive the voltage parameter of the battery to be tested, so as to independently obtain the current and voltage parameters of the battery piece to be tested.
[0040] The pressing mechanism 4 is arranged on the substrate 1 and can move relative to the bus bar 2 and be self-locked to form a clamping gap with the bus bar 2 for limiting the end of the probe row 3 or be separated from the probe row 3. By arranging the pressing mechanism 4, the probe row 3 can be quickly connected with the bus bar 2, and the connection between the plurality of probe rows 3 and the bus bar 2 is arranged independently, so that when one or more probe rows 3 are replaced, the other probe rows 3 are not interfered, thereby effectively shortening the time required for subsequent debugging (such as dynamic and static testing), and achieving the purpose of improving the test rate.
[0041] The device can collect the current and voltage parameters of the battery piece on the two bus bars 2, and then connect the bus bars 2 with external test instruments through cables, so that the bus bars 2 complete the output of data parameters. Compared with the conventional method of connecting external test instruments with two cables for each probe row 3, the device can effectively reduce the number of cables, thereby effectively avoiding the situation that the test tool is affected by the test precision due to the loosening or breaking of the cable during operation, and achieving the purpose of improving the test stability.
[0042] In addition, by arranging the pressing mechanism 4, each probe row 3 can be independently detached from the bus bar 2, and the probe rows 3 are not affected by each other due to the absence of cables, thereby enabling the test tool to quickly pass during subsequent debugging (such as dynamic and static testing), thereby shortening the time required for maintenance and improving the test rate.
[0043] In further embodiments, a specific probe row 3 is proposed to better collect the current and voltage parameters of the battery piece to be tested on the corresponding bus bar 2.
[0044] Specifically, the probe row 3 includes a connecting plate 31, current probes 32, voltage probes 33, a current bus bar 34, and a voltage bus bar 35.
[0045] The connecting plate 31 is overlapped on the two bus bars 2 to complete the transmission of current and voltage parameters.
[0046] The current probes 32 and the voltage probes 33 are arranged in the middle of the connecting plate 31 in a staggered manner, and the ends thereof extend to the outside of the substrate 1 to be connected with the battery piece to be tested for acquiring current and voltage parameters.
[0047] The current bus bar 34 and the voltage bus bar 35 are arranged on the outer wall of the connecting plate 31 and connected with the corresponding current probes 32 and voltage probes 33 respectively, that is, the current data and voltage data are acquired through the current bus bar 34 and the voltage bus bar 35.
[0048] In addition, the ends of the current bus bar 34 and the voltage bus bar 35 extend to the two ends of the connecting plate 31 to be electrically connected with the corresponding bus bars 2, that is, the two bus bars 2 can respectively complete the receiving and outputting of current data and voltage data.
[0049] It should be particularly pointed out that, in order to improve the connection effect of the current bus bar 34 and the voltage bus bar 35 with the bus bar 2, the current bus bar 34 and the voltage bus bar 35 are further limited.
[0050] Specifically, the ends of the current bus bar 34 and the voltage bus bar 35 are provided with elastic conductive contacts 5 connected with the bus bar 2.
[0051] As shown in Figure 3 When the connecting plate 31 is overlapped on the bus bar 2 and the pressing mechanism 4 is moved to press, the elastic conductive contacts 5 are tightly attached to the surface of the bus bar 2 to improve the transmission effect of the data parameters.
[0052] In one example, the elastic conductive contact 5 is a U-shaped elastic sheet.
[0053] In other embodiments, the substrate 1 is further limited so that the current probe 32 and the voltage probe 33 can better contact the battery piece to be tested. Specifically, the middle part of the substrate 1 is provided with an opening for the current probe 32 and the voltage probe 33 to extend out.
[0054] In further embodiments, the number of the pressing mechanisms 4 matches the number of the probe rows 3, so that each group of probe rows 3 can be independently detached from the bus bar 2 without interference.
[0055] The pressing mechanism 4 includes two sliding blocks 41 and a locking member 42.
[0056] The sliding block 41 is slidingly installed on the substrate 1 and can slide over the bus bar 2 or retract to the side where the two bus bars 2 are away from each other to form the clamping gap with the bus bar 2 or separate from the probe row 3, thereby realizing the locking or separation between the bus bar 2 and the probe row 3 (i.e., the current bus bar 34 and the voltage bus bar 35).
[0057] The locking piece 42 is arranged inside the sliding block 41 and can extend to be clamped with the base plate 1, so that the sliding block 41 is fixed with the base plate 1, the self-locking of the sliding block 41 is realized, and the stability of the connection between the bus bar 2 and the probe array 3 is ensured.
[0058] The locking piece 42 is arranged as a screw.
[0059] In addition, in order to prevent the sliding block 41 from interfering with the transmission of data, the sliding block 41 is arranged as an insulating material.
[0060] In other embodiments, a plurality of groups of the probe array 3 are arranged at equal distances, and the probe array 3 is perpendicular to the bus bar 2, so as to facilitate disassembly and ensure that the groups of probe arrays 3 do not interfere with each other, so that the test tool can pass quickly in subsequent debugging (such as dynamic and static testing), so as to correspondingly shorten the time required for maintenance, and improve the test rate.
[0061] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.
Claims
1. A battery cell testing tool, comprising: The utility model provides a kind of test device for battery piece, including substrate, busbar, probe row and compression mechanism; The busbar is arranged on both sides of the substrate, and the two busbars are electrically connected with external test instrument by cable; The probe row is provided with multiple groups, and both ends of the multiple groups of probe rows are connected with the upper surfaces of the two busbars; When the multiple groups of probe rows are in contact with the battery piece to be tested, the current and voltage parameters of the battery piece to be tested can be output to the two busbars respectively. The compression mechanism is arranged on the substrate and can move relative to the busbar and be self-locked to form a clamping gap with the busbar for limiting the end of the probe row or separate from the probe row.
2. The cell testing tool of claim 1, wherein, The probe row includes a connecting plate, current probes, voltage probes, a current busbar and a voltage busbar. The connecting plate is overlapped on the two busbars. The current probes and the voltage probes are arranged in multiple groups and are staggered in the middle of the connecting plate, and the ends extend to the outside of the substrate to connect with the battery piece to be tested for current and voltage parameter acquisition. The current busbar and the voltage busbar are arranged on the outer wall of the connecting plate and are connected with the corresponding multiple current probes and multiple voltage probes respectively. The ends of the current busbar and the voltage busbar extend to both ends of the connecting plate respectively to be electrically connected with the corresponding busbars.
3. The cell testing tool of claim 2, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the cell. The ends of the current busbar and the voltage busbar each have an elastic conductive contact connected with the busbar.
4. The cell testing tool of claim 3, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the cell. The elastic conductive contact is a U-shaped elastic sheet.
5. The cell testing tool of claim 2, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the cell. The middle of the substrate is provided with an opening for the current probes and the voltage probes to extend out.
6. The cell testing fixture of claim 1, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the substrate. The number of compression mechanisms matches the number of probe rows. The compression mechanism includes two sliders and a locking member. The slider is slidingly installed on the substrate and can slide over the busbar or retract to the side where the two busbars are away from each other to form the clamping gap with the busbar or separate from the probe row. The locking member is arranged inside the slider and can extend to engage with the substrate to keep the slider fixed with the substrate.
7. The cell testing tool of claim 6, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the cell. The locking member is a screw.
8. The cell testing tool of claim 6, wherein the plurality of electrical contacts are arranged in a pattern that is substantially the same as a pattern of the plurality of electrical contacts on the cell. The slider is made of insulating material.
9. The battery cell testing fixture as described in claim 1, characterized in that, The multiple groups of probe rows are equidistantly arranged.
10. The cell testing fixture of claim 1, wherein, The probe row and the busbar are perpendicular to each other.