Reed type power-on tool for battery string detection

Abstract

The utility model discloses a reed type power-on tool for battery string detection, which relates to the technical field of solar battery detection and comprises a pressing mechanism and a tool base which are matched with each other, and a plurality of power-on electrodes corresponding to a plurality of solder strip pins are connected onto the tool base. The downward pressing mechanism is located above the tool base and connected with a driving mechanism for driving the downward pressing mechanism to be away from or close to the tool base. The bottom of the pressing mechanism is fixedly connected with an elastic reed, and the length of the elastic reed covers each power-on electrode below the elastic reed; the elastic reed is made of a conductive metal material; and when the elastic reed moves downwards along with the pressing mechanism, the elastic reed is in contact with each welding strip pin and is electrically conducted. According to the utility model, a reed-type pressing structure is adopted, so that the technical defect that a welding strip pin cannot be in contact with a power-on electrode is effectively avoided, the conduction of a welding strip loop at the head and the tail of a battery string is realized to realize luminescence detection imaging, and the problem that the EL of the head / tail piece cannot be detected because the current of the head / tail piece of the battery string is not conducted and electroluminescence cannot be realized is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar cell detection, and in particular relates to a reed-type power-on tool for battery string detection. Background Art

[0002] During the manufacturing process of photovoltaic modules, it is necessary to connect test equipment to the module electrodes to detect their electrical performance. For example, power-on detection equipment (EL test equipment) can promptly detect abnormal phenomena such as cold solder joints and hidden cracks in the battery string, thereby preventing unqualified products from flowing into subsequent production processes and causing unnecessary rework and losses.

[0003] In the prior art, a power-on tool is usually used to connect the test equipment and the electrodes of the photovoltaic module. However, the traditional power-on tool is a block structure, which has the following technical defects: each block is a separate structure. When a block fails, the soldering pin corresponding to the block has no current, resulting in poor electroluminescence effect at that location, and the EL data of the first / last piece cannot be effectively detected; the elastic coefficient of the block spring gradually decreases with the number of times used during long-term use, resulting in the soldering pin being unable to contact the power-on electrode when pressed down; the block uses an aluminum substrate, and there is a problem of carbonization accumulation wrapping the soldering pin after power-on, which easily leads to a failure to conduct electricity. Therefore, the prior art power-on tool is easily unable to perform EL detection on the first / last piece, resulting in the problem of outflow of defective battery strings.

[0004] In view of this, there is an urgent need for a reed-type power-on tool for battery string detection to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a reed-type power-on tool for battery string detection, so as to solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above purpose, the utility model provides the following solution: a reed-type power-on tool for battery string detection, comprising:

[0007] A tooling base, to which a plurality of power-on electrodes corresponding to a plurality of solder strip pins are connected;

[0008] A pressing mechanism, the pressing mechanism is located above the tooling base and cooperates with the tooling base, and the pressing mechanism is connected to a driving mechanism that drives it away from / close to the tooling base;

[0009] An elastic spring, the elastic spring is fixedly connected to the bottom of the pressing mechanism, the length of the elastic spring covers each of the upper power electrodes below it; the elastic spring is made of conductive metal;

[0010] When the elastic spring piece moves downward along with the pressing mechanism, it contacts with each of the soldering strip pins and is electrically connected.

[0011] Preferably, the elastic spring includes a first horizontal plane, a first vertical plane bent downward from one side of the first horizontal plane, a first inclined plane bent inward from the side of the first vertical plane away from the first horizontal plane, and a second horizontal plane bent horizontally from the side of the first inclined plane away from the first vertical plane. The first horizontal plane is fixed to the bottom of the pressing mechanism, and a side of the second horizontal plane away from the first horizontal plane cooperates with the upper power electrode to form abutment against the solder strip pin.

[0012] Preferably, a second inclined surface is bent upward on a side of the second horizontal surface away from the first inclined surface.

[0013] Preferably, the second horizontal surface is thickened.

[0014] Preferably, the second horizontal plane is plated with nickel on a side away from the first horizontal plane.

[0015] Preferably, the first horizontal plane is connected to the pressing mechanism via at least one row of fastening screws.

[0016] Preferably, a second vertical surface is bent on one side of the first horizontal surface connected to the first vertical surface in a direction away from the first vertical surface, and the second vertical surface is fixed to the side surface of the pressing mechanism by a row of fastening screws.

[0017] Preferably, a spring fixing cover plate is provided between the fastening screw and the second vertical surface, and the spring fixing cover plate extends to and covers the first vertical surface.

[0018] Preferably, the spring fixing cover plate is made of rigid metal material.

[0019] The utility model discloses the following technical effects:

[0020] In view of the problem that the power-on tooling used in the industry cannot detect EL defects at the head / tail of a battery string, the utility model proposes a reed-type power-on tooling for battery string detection. The reed-type downward pressing structure is adopted to effectively avoid the technical defect that the soldering strip pins cannot contact the power-on electrode, and the soldering strip loops at the head and tail of the battery string are connected to achieve luminous detection imaging, which solves the problem that the head / tail current of the battery string cannot be turned on and electroluminescence cannot be generated, and thus the EL defects at the head / tail cannot be detected. The utility model can effectively detect internal defects, hidden cracks, fragments, cold solder joints, broken grids and abnormal phenomena of single-chip batteries with different conversion efficiencies of solar cell modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the power-on tooling in the prior art;

[0023] Figure 2 This is a front view of the use effect of the power-on tool in the prior art;

[0024] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0025] Figure 4 This is a side view of the use effect of the power-on tool in the prior art;

[0026] Figure 5 This is a schematic diagram of the structure of the power-on tooling of Example 1 of the utility model;

[0027] Figure 6 This is a diagram showing the effect of using Example 1 of the utility model from a frontal perspective;

[0028] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0029] Figure 8 This is a side view of the effect of the use of the first embodiment of the utility model;

[0030] Fig. 9 It is a side view of the elastic spring in Example 1 of the utility model;

[0031] Fig.10 This is a side view of the effect of the use of the second embodiment of the utility model;

[0032] Fig.11 This is a side view of the elastic spring in Example 2 of the utility model.

[0033] Among them, 1. downward pressure mechanism; 2. upper voltage block; 2a. first upper voltage block; 2b. second upper voltage block; 3. upper power electrode; 3a. first upper power electrode; 3b. second upper power electrode; 3c. third upper power electrode; 3d. fourth upper power electrode; 4. tooling base; 5. spring; 6. solder strip pin; 7. battery string head / tail piece; 8. elastic spring leaf; 81. first horizontal plane; 82. first vertical plane; 83. first inclined plane; 84. second horizontal plane; 85. second inclined plane; 86. second vertical plane; 9. spring leaf fixing cover plate; 10. fastening screws. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figures 1 to 4 As shown, the prior art discloses an electric tooling, including a pressing mechanism 1 and a tooling base 4 that cooperate with each other, the tooling base 4 is connected with a plurality of electric electrodes 3 corresponding to a plurality of solder strip pins 6, the pressing mechanism 1 cooperates with the tooling base 4, and is connected with a driving mechanism for driving it away from / close to the tooling base 4, the pressing mechanism 1 is elastically connected with an upper voltage block 2 corresponding to the electric electrodes 3 one by one, the upper voltage block 2 and the pressing mechanism 1 are connected by a spring 5, the upper voltage block 2 is a separate structure, when one of the upper voltage blocks 2 fails, the corresponding solder strip pin 6 will have no current conduction, and the elastic coefficient of the spring 5 between the upper voltage block 2 and the pressing mechanism 1 will gradually decrease with the increase of the number of uses, and there will be a problem that the solder strip pin 6 cannot be pressed onto the electric electrode 3 when pressing down, resulting in poor contact.

[0036] For example, Figure 3 and Figure 4 As shown, when the power-on tooling is working, as the pressing mechanism 1 moves downward, the upper voltage block 2 presses the soldering pin 6 onto the upper power electrode 3, so that the soldering pin 6 contacts the upper power electrode 3, as shown in FIG. Figure 3 However, due to failure of one or more upper voltage blocks 2, the soldering pin 6 cannot be pressed to the upper power electrode 3, such as Figure 3 The second upper voltage block 2b and the second upper power electrode 3b in the battery pack are connected. At this time, the soldering pin 6 that fails to contact the second upper power electrode 3b has no current conduction, resulting in poor luminous effect and inability to effectively detect the defect of the first / last piece 7 of the battery string.

[0037] To solve this problem, the embodiment of the utility model proposes a reed-type power-on tool for battery string detection. In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Embodiment 1:

[0039] Reference Figures 5 to 9 As shown, Example 1 of the utility model provides a spring-type power-on tool for battery string detection, including a pressing mechanism 1 and a tool base 4 that cooperate with each other, and the tool base 4 is connected to a plurality of power-on electrodes 3 corresponding to a plurality of welding strip pins 6, and an elastic spring 8 is fixedly connected to the pressing mechanism 1. The elastic spring 8 is an integral structure, covering all the power-on electrodes 3, and the elastic spring 8 is installed under the pressing mechanism 1 by a fastening screw 10. In addition, in order to prevent the elastic spring 8 from fatigue deformation, a spring fixing cover plate 9 is padded between the elastic spring 8 and each fastening screw 10. The spring fixing cover plate 9 is made of rigid material and has a clamping surface of a certain area, which can firmly fasten the elastic spring 8 to the bottom of the pressing mechanism 1.

[0040] In the above embodiment, the entire elastic spring 8 acts as a conductor and contacts all the soldering pins 6. The power-on tooling of this embodiment powers on by pressing down the elastic spring 8, which can avoid the problem that the soldering strip cannot fit and conduct with the power-on electrode 3 due to the failure of the upper voltage block 2 in the prior art.

[0041] In the above embodiment, the elastic spring 8 adopts a conductive metal substrate, for example, brass is used as a conductor.

[0042] Further optimization scheme, such as Fig. 9 As shown, the elastic spring leaf 8 is a three-dimensional stamping structure, including a first horizontal plane 81 and a second horizontal plane 84 that rotates, and a first vertical plane 82 and a first inclined plane 83 connecting the first horizontal plane 81 and the second horizontal plane 84. The second horizontal plane 84 is located directly below the first horizontal plane 81, wherein the first horizontal plane 81 is used to be close to the bottom of the pressing mechanism 1 and connected to the pressing mechanism 1. Therefore, a plurality of screw holes for fastening and installation are opened on the first horizontal plane 81, and the second horizontal plane 84 is used to abut against the upper power electrode 3 to achieve upper power conduction of the welding strip pin 6.

[0043] According to a further optimization scheme, a second inclined surface 85 is bent upward on one side of the second horizontal surface 84 away from the first inclined surface 83 , that is, inclined surfaces bent upward are provided on both sides of the first horizontal surface 81 to ensure the effectiveness of the contact between the second horizontal surface 84 and the upper power electrode 3 .

[0044] In a further optimized solution, the first horizontal surface 81 connecting the elastic spring 8 and the pressing mechanism 1 is provided with two rows of screw holes spaced apart in the width direction thereof, such as Figure 8 As shown, two rows of fastening screws 10 are provided to fix the elastic spring 8 so that the connection is firm and not easily deformed or displaced.

[0045] According to a further optimization scheme, a surface of the elastic spring 8 that contacts the upper power electrode 3 (ie, the second horizontal surface 84 ) is thickened and nickel-plated on the surface to reduce carbonization accumulation.

[0046] Embodiment 2:

[0047] Reference Fig.10 and Fig.11 As shown, Example 2 of the utility model provides another spring-type power-on tooling for battery string detection. Similar to Example 1, the spring-type power-on tooling for battery string detection includes a pressing mechanism 1 and a tooling base 4 that cooperate with each other. The tooling base 4 is connected to a plurality of power-on electrodes 3 corresponding to a plurality of solder strip pins 6. The pressing mechanism 1 is fixedly connected to an elastic spring 8. The elastic spring 8 is an integrated three-dimensional stamping structure, including a first horizontal plane 81, a first vertical plane 82, a first inclined plane 83, a second horizontal plane 84, a second inclined plane 85, and a second vertical plane 86, wherein the second vertical plane 86 extends upward along the first vertical plane 82 to form a T-shaped connection structure with the first vertical plane 82 and the first horizontal plane 81, and the second vertical plane 86 is used to connect with the side of the pressing mechanism 1, as shown in FIG. Fig.10 As shown, in this embodiment, one group of fastening screws 10 are installed on the first horizontal surface 81 and the bottom of the pressing mechanism 1, and another group of fastening screws 10 are installed on the second vertical surface 86 and the side of the pressing mechanism 1, further increasing the connection stability between the elastic spring 8 and the pressing mechanism 1.

[0048] A further optimized solution is that a spring fixing cover plate 9 is placed between the second vertical surface 86 and the fastening screw 10, and the spring fixing cover plate 9 extends to and covers the first vertical surface 82, limiting the entire elastic spring 8 from the outside of the first vertical surface 82 to prevent it from excessive deformation, thereby increasing its service life.

[0049] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and 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 therefore should not be understood as a limitation on the present invention.

[0051] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A reed-type power-on tool for battery string detection, characterized in that: include: A tooling base (4), the tooling base (4) being connected with a plurality of power-on electrodes (3) corresponding to a plurality of solder strip pins (6); A pressing mechanism (1), the pressing mechanism (1) being located above the tooling base (4) and cooperating with the tooling base (4), the pressing mechanism (1) being connected to a driving mechanism for driving it to move away from / close to the tooling base (4); An elastic spring (8), the elastic spring (8) being fixedly connected to the bottom of the pressing mechanism (1), the length of the elastic spring (8) covering each of the upper power electrodes (3) below it; the elastic spring (8) being made of a conductive metal material; When the elastic spring sheet (8) moves downward along with the pressing mechanism (1), it contacts and electrically conducts with each of the soldering strip pins (6).

2. The reed-type power-on tool for battery string detection according to claim 1, characterized in that: The elastic spring sheet (8) comprises a first horizontal surface (81), a first vertical surface (82) bent downward from one side of the first horizontal surface (81), a first inclined surface (83) bent inward from the side of the first vertical surface (82) away from the first horizontal surface (81), and a second horizontal surface (84) bent horizontally from the side of the first inclined surface (83) away from the first vertical surface (82), wherein the first horizontal surface (81) is fixed to the bottom of the pressing mechanism (1), and a side of the second horizontal surface (84) away from the first horizontal surface (81) cooperates with the upper power electrode (3) to form abutment with the soldering strip pin (6).

3. The reed-type power-on tool for battery string detection according to claim 2, characterized in that: A second inclined surface (85) is bent upward on a side of the second horizontal surface (84) away from the first inclined surface (83).

4. The reed-type power-on tool for battery string detection according to claim 3, characterized in that: The second horizontal surface (84) is thickened.

5. The reed-type power-on tool for battery string detection according to claim 4, characterized in that: The second horizontal surface (84) is plated with nickel on a surface away from the first horizontal surface (81).

6. The reed-type power-on tool for battery string detection according to claim 2, characterized in that: The first horizontal surface (81) is connected to the pressing mechanism (1) via at least one row of fastening screws (10).

7. The reed-type power-on tool for battery string detection according to any one of claims 2 to 6, characterized in that: A second vertical surface (86) is bent on one side of the first horizontal surface (81) connected to the first vertical surface (82) in a direction away from the first vertical surface (82), and the second vertical surface (86) is fixed to the side of the pressing mechanism (1) by a row of fastening screws (10).

8. The reed-type power-on tool for battery string detection according to claim 7, characterized in that: A spring fixing cover plate (9) is provided between the fastening screw (10) and the second vertical surface (86), and the spring fixing cover plate (9) extends and covers the first vertical surface (82).

9. The reed-type power-on tool for battery string detection according to claim 8, characterized in that: The spring fixing cover plate (9) is made of a rigid metal material.

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