CN213602610U

CN213602610U - IBC battery test platform and battery test equipment

Info

Publication number: CN213602610U
Application number: CN202022776458.XU
Authority: CN
Inventors: 李景; 李兵; 刘娜; 邓伟伟
Original assignee: CSI Cells Co Ltd; Atlas Sunshine Power Group Co Ltd
Current assignee: Canadian Solar Inc; CSI Cells Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-02
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to the technical field of solar cell testing, in particular to an IBC battery testing platform and battery testing equipment, wherein the IBC battery testing platform comprises a support and a plurality of conductive strips, the plurality of conductive strips are detachably arranged on the support at intervals, the conductive strips are insulated from the support, and the conductive strips can be contacted with a main grid of an IBC battery along the length direction of the conductive strips; each conductive strip is connected to the control system by a wire. The utility model discloses a busbar is connected with the main bars of IBC battery along its length direction, and this kind of contact mode is compared with the mode of probe contact, has increased the area of contact with the metal main bar for the electric current of IBC battery can be through whole main bar outward transmission, has avoided the string to hinder the condition on the high side in the testing process, has improved the degree of accuracy of test.

Description

IBC battery test platform and battery test equipment

Technical Field

The utility model relates to a solar cell tests technical field, especially relates to a IBC battery test platform and battery test equipment.

Background

The all-back electrode contact crystalline silicon solar cell, called IBC (indirect back contact) cell for short, is to move the metal contacts of the positive and negative poles to the back of the IBC cell, and the front of the cell has no electrode. The PN junction and the metal main grid of the IBC battery are both arranged on the back surface of the battery, the front surface of the IBC battery is not influenced by shielding of a metal electrode, so that the IBC battery has higher short-circuit current, and meanwhile, the back surface can allow a wider metal wire to reduce series resistance, so that the filling factor is improved, and an open-circuit voltage gain caused by a surface electric field and a good passivation effect is added, so that the battery with the front surface free of shielding is high in conversion efficiency and attractive in appearance.

At present, when the electrical property of the IBC battery is tested, the probe is contacted with the main grid of the IBC battery to lead out the current in the battery, but the contact area between the probe and the main grid is small, so that the current in the IBC battery can be led out only by flowing to the probe, and the flowing distance of the main grid is large, therefore, the series resistance is high in the test process, and the measurement accuracy is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an IBC battery test platform and battery test equipment to the problem that the accuracy of solving IBC battery electrical property test is low.

In order to achieve the purpose, the utility model adopts the following technical proposal:

in one aspect, the utility model provides a IBC battery test platform, this IBC battery test platform includes:

a support;

the conductive strips are detachably arranged on the support at intervals, the conductive strips are insulated from the support, and the conductive strips can be contacted with a main grid of the IBC battery along the length direction of the conductive strips; each conducting bar is connected with a control system through a conducting wire.

Optionally, the conductive bar is provided with an adsorption hole for adsorbing the IBC battery.

Optionally, each conductive strip is provided with at least two adsorption holes at intervals along the length direction thereof.

Optionally, the IBC battery test platform further comprises a fixing member capable of mounting the conductive strip to the bracket.

Optionally, the fixing piece is a fixing pin, the bracket is provided with a fixing hole, the conductive strip is provided with a through hole, and the fixing pin passes through the through hole and then is matched with the side wall of the fixing hole.

Optionally, the IBC battery testing platform further includes an insulating strip, the insulating strip is disposed between any two adjacent conductive strips, and the insulating strip and the conductive strips together form a bearing surface of the IBC battery.

Optionally, the color of at least one side surface of the insulating strip far away from the bracket is black.

Optionally, the IBC battery test platform further comprises a positioning assembly disposed on the bracket for defining a mounting position of the conductive strip relative to the bracket.

Optionally, the positioning assembly includes a first stopper and a second stopper, the first stopper and the second stopper are both disposed on the bracket, the first stopper can limit the first direction of the conductive strip, and the second stopper can limit the second direction of the conductive strip.

On the other hand, the utility model provides a battery test equipment, including the IBC battery test platform in any one of above-mentioned scheme.

The utility model has the advantages that:

the utility model provides a IBC battery test platform and battery test equipment, this IBC battery test platform passes through the busbar and is connected along the main bars of its length direction and IBC battery, thereby make the busbar form banding contact surface along its length direction and main bars, this kind of contact pattern is compared with the mode of probe contact, increased the area of contact with the metal main bars, make the electric current of IBC battery can outwards transmit through whole main bars, the string has been avoided hindering the condition on the high side in the test procedure, the accuracy of test has been improved.

Drawings

Fig. 1 is a schematic structural diagram of an IBC battery test platform according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

In the figure:

1. a support; 11. a first stopper; 12. a second stopper;

2. a conductive strip; 21. an adsorption hole; 22. an air inlet; 23. a through hole;

3. a fixing pin;

4. an insulating strip.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides an IBC battery testing platform, which includes: the IBC battery comprises a support 1 and conductive strips 2, wherein the conductive strips 2 are detachably arranged on the support 1 at intervals, the conductive strips 2 are insulated from the support 1, and the conductive strips 2 can be contacted with a main grid of the IBC battery along the length direction of the conductive strips; each conductive strip 2 is connected to the control system by a wire.

In this embodiment, IBC battery test platform passes through conducting strip 2 and is connected with the main bars of IBC battery along its length direction to make the conducting strip can form rectangular form contact surface along its length direction and main bars, this kind of contact mode compares with the mode of probe contact, has increased the area of contact with the metal main bars, makes the electric current of IBC battery can outwards transmit through whole main bars, has avoided the situation that the string hinders to incline high in the test procedure, has improved the accuracy of test.

In the testing process, due to operation reasons, the IBC battery and the conductive bar 2 may move relatively, which may cause the main grid of the IBC battery to have poor contact with the conductive bar 2, and affect the accuracy of the testing result. For this purpose, in the present embodiment, the conductive bar 2 is provided with a suction hole 21, and the suction hole 21 is used for sucking the IBC battery. This setting can adsorb the IBC battery tightly on conducting bar 2, can guarantee IBC battery and conducting bar 2's position relatively fixed on the one hand, and on the other hand, the main bars that still enables the IBC battery are pasted tightly in conducting bar 2 for connect more firmly.

Preferably, each conductive strip 2 is provided with at least two suction holes 21 at intervals along the length direction thereof. This arrangement can attract the IBC cell more firmly. Further, one end of the conductive strip 2 is provided with an air inlet 22, and the air inlet 22 is communicated with the adsorption hole 21. When the air suction and exhaust device is used, the air inlet and outlet pipeline is connected with the air inlet hole 22, and air suction and air exhaust of the adsorption hole 21 can be realized. Specifically, when breathing in, produce the negative pressure, can inhale the IBC battery tightly in conducting strip 2, when giving vent to anger, produce the malleation, be convenient for take off the IBC battery.

Optionally, the IBC battery test platform further comprises a fixing member capable of mounting the conductive strip 2 to the bracket 1. Regarding the structure of the fixing member, in this embodiment, specifically, the fixing member is a fixing pin 3, the bracket 1 is provided with a fixing hole, the conductive bar 2 is provided with a through hole 23, and the fixing pin 3 is engaged with a sidewall of the fixing hole after passing through the through hole 23. This set up simple structure, convenient operation can be fixed in support 1 with conducting strip 2 fast.

Further, at least two rows of fixing holes are formed in the support 1, the number of each row of fixing holes is at least two, the conductive strip 2 is provided with at least two through holes 23, and the through holes 23 of the conductive strip 2 can correspond to the fixing holes in each row of the support 1. This setting can satisfy the test of the IBC battery of different models, and when the conducting strip 2 that the testing process needs was more, every conducting strip 2 can both be fixed by fixed pin 3.

Optionally, the IBC battery testing platform further includes an insulating strip 4, where the insulating strip 4 is disposed between any two adjacent conductive strips 2, and the insulating strip 4 and the conductive strips 2 together form a bearing surface of the IBC battery. This arrangement can reduce or even eliminate the gap between the conductive bars 2, facilitating stable load bearing of the IBC cell. Further, the insulating strip 4 is made of a hard material, as long as it is ensured that the insulating strip is not deformed when carrying the IBC battery, for example, the insulating strip may be made of a metal material such as but not limited to stainless steel, copper, iron, and the like, and an insulating layer is wrapped on the outer side of the insulating strip 4, and the insulating layer may be made of plastic. Of course, the insulating strip 4 may also be a strip of plastic or tempered glass. Preferably, at least one side surface of the insulating strip 4 far away from the bracket 1 is black in color. In this embodiment, keep away from one side surface of support 1 and be black material for light during the test can not reflect back after seeing through IBC battery and arriving at insulating strip 4, and then can not cause the influence to the IBC battery, is favorable to guaranteeing the measuring accuracy of IBC battery.

In order to adapt to IBC batteries of different models, the conductive bars 2 need to be placed at different positions, and the regularity needs to be ensured. In this embodiment, the IBC battery testing platform further includes a positioning component, and the positioning component is disposed on the bracket 1 and is used to define a mounting position of the conductive bar 2 relative to the bracket 1. Optionally, the positioning assembly includes a first stopper 11 and a second stopper 12, the first stopper 11 and the second stopper 12 are both disposed on the bracket 1, the first stopper 11 can limit the first direction of the conductive strip 2, and the second stopper 12 can limit the second direction of the conductive strip 2. Specifically, the first stopper 11 is disposed on one side of the conductive strip 2 along the length direction of the conductive strip 2, and the second stopper 12 is disposed on one end of the conductive strip 2 along the width direction of the conductive strip 2. When the conductive strip 2 is a rectangular parallelepiped structure, the first stop 11 and the second stop 12 can be disposed on the bracket 1 perpendicularly to each other. When the fixing device is used, the conductive strips 2 and the insulating strips 4 are placed on the support 1 at intervals, then the conductive strips 2 are fixed on the support 1 through the fixing pins 3, and the insulating strips 4 between every two conductive strips 2 are also clamped and fixed by the fixed conductive strips 2. Under positioning element's assistance, first busbar 2 only need with first dog 11 and second dog 12 butt can, subsequent busbar 2 only need with preceding busbar 2 or the 4 butt of insulating strip with insulating strip 4, and the tip can realize that the through-hole 23 of busbar 2 aligns with the fixed orifices on the support 1 with the 12 butts of second dog, the placing and the fixed efficiency of busbar 2 and insulating strip 4 have been improved, this setting can assist the staff fast on support 1, splice a plurality of busbar 2 and insulating strip 4 neatly, can adapt to the electrical test of the IBC battery of different models.

Alternatively, the first stopper 11 and the second stopper 12 may be both fixed to the bracket 1 by screws. Of course, in other embodiments, the first stopper 11 and the second stopper 12 are both snap-fit with the bracket 1, wherein the first stopper 11 and the second stopper 12 are both provided with a snap projection, the bracket 1 is provided with a snap groove, and the first stopper 11 and the second stopper 12 are both snap-fit with the snap groove on the bracket 1 through the snap projection. This arrangement facilitates the first stopper 11 and the second stopper 12 to be detached from the bracket 1 for maintenance and replacement.

Optionally, the adjacent side of conducting strip 2 and insulating strip 4 is equipped with the recess, and the adjacent side of insulating strip 4 and conducting strip 2 is equipped with the arch, and when conducting strip 2 and insulating strip 4 pieced together, recess and protruding cooperation for insulating strip 4 is fixed more firmly.

In order to fix the conductive strips 2 more conveniently on the premise that the insulating strips 4 exist, two fixing pins 3 can be used for fixing the conductive strips 2 at the outermost side to the bracket 1. Due to the tight mutual gap between the bus bars 2 and the insulating strip 4, fixing only the bus bar 2 on the outermost side prevents all bus bars 2 from shifting.

Optionally, the conductive strip 2 is made of metal. Preferably copper.

In order to ensure the insulation between the conductive strip 2 and the support 1, in the present embodiment, the support 1 is optionally made of an insulating material, preferably a plastic material. Of course, in other embodiments, an insulating layer, preferably plastic, may be provided on the side of the conductive strip 2 that is in contact with the support 1.

The embodiment also provides a battery test device which comprises the IBC battery test platform in the scheme.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An IBC battery test platform, comprising:

a support (1);

the conductive strips (2) are detachably arranged on the support (1) at intervals, the conductive strips (2) are insulated from the support (1), and the conductive strips (2) can be contacted with a main grid of an IBC battery along the length direction of the conductive strips; each conductive strip (2) is connected with a control system through a lead.

2. The IBC cell test platform according to claim 1, wherein said conductive bars (2) are provided with suction holes (21), said suction holes (21) being adapted to suck said IBC cells.

3. The IBC cell test platform according to claim 2, wherein each conductive strip (2) is provided with at least two suction holes (21) spaced along its length.

4. The IBC battery test platform according to claim 1, further comprising a fixture capable of mounting the conductive bar (2) to the bracket (1).

5. The IBC battery test platform of claim 4, wherein the fixing member is a fixing pin (3), the bracket (1) is provided with a fixing hole, the conductive bar (2) is provided with a through hole (23), and the fixing pin (3) is matched with the side wall of the fixing hole after passing through the through hole (23).

6. The IBC battery test platform of any one of claims 1-5, further comprising an insulating strip (4), wherein the insulating strip (4) is disposed between any two adjacent conductive strips (2), and the insulating strip (4) and the conductive strips (2) together form a bearing surface of the IBC battery.

7. The IBC cell testing platform according to claim 6, wherein the color of the surface of the insulating strip (4) at least on the side facing away from the holder (1) is black.

8. The IBC battery test platform according to any of the claims 1-5, further comprising a positioning assembly provided to said cradle (1) for defining a mounting position of said conductive strip (2) with respect to said cradle (1).

9. The IBC battery test platform according to claim 8, wherein the positioning assembly comprises a first stopper (11) and a second stopper (12), the first stopper (11) is disposed at one side of the conductive strip (2) along the length direction of the conductive strip (2), and the second stopper (12) is disposed at one end of the conductive strip (2) along the width direction of the conductive strip (2).

10. A battery testing apparatus comprising an IBC battery test platform according to any one of claims 1 to 9.