CN209805766U - A dense grid cell testing mechanism - Google Patents

Abstract

The utility model relates to a dense grid battery piece accredited testing organization, including upper and lower get the electricity probe subassembly and correspond on both reciprocate of drive, lower actuating mechanism, on, get the electricity probe subassembly down and all include fixed frame that the level set up and the probe row that multirow is parallel to each other of sliding connection on fixed frame respectively, every row of probe row is fixed in many vertical probes on the probe strip by the probe strip and the even interval that a level set up and constitutes, the both ends of every probe strip are respectively through adjustable slider and fixed frame sliding fit with the position of front and back direction regulation probe strip, be equipped with on the adjustable slider and lock the structure so that the probe strip can control direction adjusting position. The adjustable probe assembly has the advantages that two ends of the probe strip of the upper and lower electricity-taking probe assembly are in sliding fit with the fixed frame through the adjustable sliding block, the probe strip can be adjusted front and back, meanwhile, the probe strip can be adjusted left and right by arranging the locking structure on the adjustable sliding block, and the adjustment is flexible and has strong compatibility; the upper and lower electricity taking probe assemblies have less shading on the battery piece, and the testing accuracy can be improved.

Description

A dense grid cell testing mechanism

technical field

The utility model belongs to the technical field of solar cell testing, and in particular relates to a dense grid cell testing mechanism.

Background technique

During the I-V test of the dense-grid cell (hereinafter referred to as "cell"), it is necessary to separate the test power-taking device (here divided into "upper power-taking device" and "bottom power-taking device") with the cell's The front and back busbars are in full and stable contact to obtain accurate and reliable electrical performance parameters to determine the power level of the battery. There are four key technical points in this type of test: A. The contact pressure between the power-taking device and the grid wire should be appropriate and uniform. If the force is too large or too small, it will easily cause errors in voltage and current collection; The relative position of the grid line of the battery is accurately corresponding and fully contacted, and the power-taking device needs to have a structural function that can be adjusted or compatible with the grid line of the battery; Accuracy; D. The power-taking device needs to be easy to replace, the cost is reasonable, and the long-term stability of the test needs to be guaranteed.

In the prior art, the upper power-taking device of a cell test device adopts a tensioned copper wire to obtain power, and the lower power-taking device adopts a curved copper plate to obtain power. The disadvantage is that the tensioned copper wire is After the first use, there will be fatigue deformation, negotiating with the front bonding effect of the battery, and the contact is not stable, resulting in inaccurate testing. At the same time, the applicability is not good, and it is impossible to flexibly adjust the specific grid line distribution of different cells; although the curved copper plate It can be in stable contact with the grid line on the back of the battery, but the curved copper plate is composed of multiple curved copper sheets. On the one hand, the processing of the curved surface is complicated, and on the other hand, it is difficult to ensure the consistency of the curved copper sheets on the same curved copper plate. , will also affect the accuracy of the test.

Utility model content

The utility model provides a test mechanism for a dense grid cell, which aims to overcome the problems of poor applicability, difficult adjustment and poor test stability when the corresponding test device in the prior art adopts copper wire to take power and curved copper plate to take power for testing. The accuracy is not high and so on.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a dense grid cell testing mechanism, including an upper power-taking probe assembly, a lower power-taking probe assembly, and correspondingly driving the upper power-taking probe assembly, the lower power-taking probe assembly, The upper drive mechanism and the lower drive mechanism for the probe assembly to move up and down. The upper and lower electric probe assemblies respectively include a fixed frame arranged horizontally and a plurality of rows connected to each other by sliding on the fixed frame. Parallel probe rows, each row of the probe row is composed of a horizontally arranged probe strip and a plurality of vertical probes fixed on the probe strip at even intervals, two of each probe strip The ends are slidably matched with the fixed frame through adjustable sliders to adjust the position of the probe strip in the front and rear directions, and the adjustable slider is provided with a lock-and-release structure to lock or release the probe strip The end of the probe strip can be adjusted in the left and right directions when it is loosened.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, the adjustable slider is composed of an upper pressing block and a lower slider, and the lock-and-release structure includes a bayonet opening and a connection on the upper part of the lower slider for the end of the probe strip to extend in the left and right directions. The adjustment screw of the upper pressing block and the lower slider, when the adjustment screw is tightened, the end of the probe strip is pressed and positioned in the bayonet, when the adjustment screw is loosened, the probe The end of the needle strip is movable in the bayonet to adjust the position of the probe strip in left and right directions.

The beneficial effect of adopting the above further scheme is that the adjustable slider adopts the structure that the upper pressing block and the lower sliding block cooperate. It is simple and can well realize the forward and backward sliding adjustment of the entire adjustment slider along the fixed frame and the left and right sliding and positioning of the end of the probe bar relative to the adjustment slider in the bayonet socket.

Further, the fixed frame is rectangular, and the left and right sides of the fixed frame are provided with slide grooves for sliding cooperation with the adjustable slider, and the rear side of the fixed frame is connected to the corresponding upper drive mechanism or lower drive mechanism. The drive mechanism is connected accordingly.

The beneficial effect of adopting the above-mentioned further scheme is that the fixed frame is set as a rectangle, which facilitates the setting of chutes on a pair of parallel sides thereof, and the empty part in the middle of the fixed frame facilitates the setting of the probe row and the probes on it and realizes the probe row. After the fixed frame moves up and down for a set distance, the probe is in contact with the grid wire of the battery sheet and conducts.

Further, the upper power-taking probe assembly and the lower power-taking probe assembly respectively include 6 rows of the probes, and 41 probes are fixed on the probe strips corresponding to each of the probe rows.

The beneficial effect of adopting the above-mentioned further scheme is that 6 rows of probes and 41 probes are fixed on each row. parameter is more accurate.

Further, each of the probe strips is composed of end horizontal fixing sections located at both ends for cooperating with the lock-and-release structure of the adjustable slider, and an intermediate horizontal fixing section located in the middle for fixing the probes. and an inclined connecting section for connecting the end horizontal fixing section and the middle horizontal fixing section.

The beneficial effect of adopting the above-mentioned further solution is that each end of the probe strip with the above-mentioned structure is in a broken line structure, which facilitates the left-right sliding and positioning of the probe strip in the bayonet of the adjusting slider.

Further, the upper driving mechanism and the lower driving mechanism are cylinders or lead screw stepping motors.

The beneficial effect of adopting the above further solution is that the cylinder and the lead screw stepping motor have good technical maturity, high controllability and good stability, which can ensure the efficiency and accuracy of the test work.

Compared with the prior art, the beneficial effects of the utility model are:

Under the condition that the original test principle remains unchanged, the structure of the whole set of test mechanism has been improved and optimized, which reduces the production cost and installation cost of the overall structure and enhances its applicability. The adjustable slider is slidably matched with the fixed frame, and the probe strip can be adjusted forward and backward. At the same time, the adjustable slider is equipped with a lock-and-release structure to adjust the probe strip left and right, so that the testing mechanism is suitable for testing cells of different specifications;

The upper and lower power-taking probe assemblies include multiple rows of probes, and each row of probes is fixed with multiple probes. During the test, the area of the cell that is shaded is reduced as much as possible, making the collection of cell performance parameters more accurate and reliable.

Description of drawings

Fig. 1 is a schematic diagram of an axonometric view of a dense grid cell testing mechanism provided by the utility model;

Fig. 2 is the front view of the test mechanism shown in Fig. 1;

Fig. 3 is a left view of the testing mechanism shown in Fig. 1;

Fig. 4 is the top view of testing mechanism shown in Fig. 1;

Fig. 5 is an axonometric schematic diagram of a certain probe strip and its two ends of the lower power-taking probe assembly in the testing mechanism shown in Fig. 1 when slidingly fitting with the upper chute of the fixed frame through the adjustable slider.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Upper electric probe assembly; 2. Lower electric probe assembly; 3. Upper drive mechanism; 4. Lower drive mechanism; 5. Fixed frame; 6. Probe row; 7. Probe; 8. Adjustable Slider; 9. Chute; 60. Probe bar; 601. End horizontal fixed section; 602. Middle horizontal fixed section; 603. Inclined connection section; 80. Upper pressing block; 81. Lower slider; 82. Adjustment screw.

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figures 1 to 5, the utility model provides a dense-grid cell testing mechanism, including an upper power-taking probe assembly 1, a lower power-taking probe assembly 2, and correspondingly driving the upper power-taking probe assembly 1, The upper drive mechanism 3 and the lower drive mechanism 4 for the lower electric probe assembly 2 to move up and down, the upper electric probe assembly 1 and the lower electric probe assembly 2 respectively include a horizontally arranged fixed frame 5 and a sliding connection to the Multiple rows of probe rows 6 parallel to each other on the fixed frame 5, each row of the probe row 6 consists of a horizontally arranged probe bar 60 and a plurality of vertical probe bars fixed on the probe bar 60 at even intervals. The two ends of each probe strip 60 are slidably matched with the fixed frame 5 through the adjustable slider 8 to adjust the position of the probe strip 60 in the front and rear directions. The sliding block 8 is provided with a lock-and-release structure for locking or releasing the end of the probe bar 60 and the position of the probe bar 60 can be adjusted in the left and right directions when the end of the probe bar 60 is released.

It should be noted that the probe rows of the upper and lower power-taking probe assemblies are preferably in one-to-one correspondence in the vertical direction, thereby reducing or avoiding the shear stress generated by the upper and lower probe rows on the battery sheet during testing, and reducing the damage of the battery sheet due to testing. probability of damage.

Further, the adjustable slider 8 is composed of an upper pressing block 80 and a lower slider 81, and the lock-and-release structure includes opening on the upper part of the lower slider 81 for the end of the probe strip 60 to extend in the left-right direction. bayonet and the adjusting screw 82 connecting the upper pressing block 80 and the lower slider 81, when the adjusting screw 82 is tightened, the end of the probe strip 60 is pressed and positioned in the bayonet, When the adjusting screw 82 is loosened, the end of the probe bar 60 can move in the bayonet to adjust the position of the probe bar 60 in the left and right direction.

It should be noted that the moving distance of the end of the probe strip in the bayonet is relatively short, that is, the adjustment in the left and right directions is fine adjustment, and the adjustment distance is usually within 1 cm.

Further, the fixed frame 5 is rectangular, and the left and right sides of the fixed frame 5 are provided with a chute 9 that slides and fits with the adjustable slider 8, and the rear side of the fixed frame 5 is connected to the corresponding The upper drive mechanism 3 or the lower drive mechanism 4 are correspondingly connected.

It should be noted that, as shown in the drawings, the chute preferably adopts a T-shaped groove, so as to facilitate the sliding of the adjustable slider on the chute along the extending direction of the chute and the limit in the vertical direction.

Further, the upper power-taking probe assembly 1 and the lower power-taking probe assembly 2 respectively include 6 rows of the probe rows 6, and 41 probe strips 60 corresponding to each row of the probe rows 6 are fixed the probe.

It should be noted that the probes are preferably gold-plated probes to ensure electrical conductivity and prevent inaccurate test results due to air oxidation.

Further, each probe strip 60 is composed of end horizontal fixing sections 601 located at both ends for cooperating with the lock-and-release structure of the adjustable slider 8 , and a middle section for fixing the probe 7 . The middle horizontal fixing section 602 is composed of an inclined connecting section 603 for connecting the end horizontal fixing section 601 and the middle horizontal fixing section 602 .

It can be understood that the horizontal fixing section and the corresponding inclined connecting section are two intermediate horizontal fixing sections, and each section of the probe strip is integrally formed during processing.

Further, the upper driving mechanism 3 and the lower driving mechanism 4 are cylinders or lead screw stepping motors.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. A dense-grid battery plate testing mechanism comprises an upper electricity-taking probe assembly (1), a lower electricity-taking probe assembly (2), an upper driving mechanism (3) and a lower driving mechanism (4) which correspondingly drive the upper electricity-taking probe assembly (1) and the lower electricity-taking probe assembly (2) to move up and down, and is characterized in that the upper electricity-taking probe assembly (1) and the lower electricity-taking probe assembly (2) respectively comprise a horizontally-arranged fixing frame (5) and a plurality of rows of mutually-parallel probe rows (6) which are slidably connected to the fixing frame (5), each row of probe rows (6) consists of a horizontally-arranged probe strip (60) and a plurality of vertical probes (7) which are uniformly fixed on the probe strip (60) at intervals, two ends of each probe strip (60) are respectively in sliding fit with the fixing frame (5) through adjustable sliding blocks (8) so as to adjust the position of the probe strip (60) in the front and back directions, the adjustable sliding block (8) is provided with a locking structure so as to lock or loosen the end part of the probe strip (60), and the position of the probe strip (60) can be adjusted in the left-right direction when the probe strip is loosened.

2. The testing mechanism of claim 1, wherein the adjustable sliding block (8) is composed of an upper pressing block (80) and a lower sliding block (81), the locking and releasing structure comprises a bayonet which is arranged at the upper part of the lower sliding block (81) and is used for the end part of the probe strip (60) to extend into along the left-right direction and an adjusting screw (82) which is used for connecting the upper pressing block (80) and the lower sliding block (81), the end part of the probe strip (60) is pressed and positioned in the bayonet when the adjusting screw (82) is screwed, and the end part of the probe strip (60) can move in the bayonet when the adjusting screw (82) is unscrewed so as to adjust the position of the probe strip (60) in the left-right direction.

3. The testing mechanism of claim 1, wherein the fixed frame (5) is rectangular, sliding grooves (9) which are slidably matched with the adjustable sliding blocks (8) are formed on the left side and the right side of the fixed frame (5), and the rear side of the fixed frame (5) is correspondingly connected with the corresponding upper driving mechanism (3) or lower driving mechanism (4).

4. the testing mechanism of the dense-grid battery plate as claimed in claim 1, wherein each of the upper power-taking probe assembly (1) and the lower power-taking probe assembly (2) comprises 6 rows of the probe banks (6), and 41 probes are fixed on the probe strip (60) corresponding to each row of the probe banks (6).

5. A galvano battery plate testing mechanism according to claim 1, wherein each of the probe bars (60) is composed of an end horizontal fixing section (601) at both ends for cooperating with a locking structure of the adjustable slider (8), a middle horizontal fixing section (602) in the middle for fixing the probe (7), and an inclined connecting section (603) for connecting the end horizontal fixing section (601) and the middle horizontal fixing section (602).

6. A testing mechanism for a dense grid cell plate according to any one of claims 1 to 5, characterized in that the upper driving mechanism (3) and the lower driving mechanism (4) are air cylinders or lead screw stepping motors.