Portable detection box

Abstract

The utility model is suitable for the field of photovoltaic technology, and provides a portable detection box which comprises a power generation efficiency detection device which is an electric drive device; the first wire is connected with the positive electrode of the battery piece to be detected and the first power connection end of the power generation efficiency detection equipment; the second wire is connected with the negative electrode of the battery piece to be detected and the second power connection end of the power generation efficiency detection equipment; and the power generation efficiency detection equipment, the first wire and the second wire are arranged in the box body. Through the arrangement of the power generation efficiency detection equipment, the portable detection box can visually observe the power performance of the detected battery piece, and is suitable for occasions such as an exhibition where the performance of the battery piece needs to be displayed. The box body has waterproof and dustproof functions, and the power generation efficiency detection equipment and the positive second lead are arranged in the box body, so that the box body is convenient to carry and use, stable work in various environments is ensured, and the test convenience and reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic technical field especially relates to a portable detection box. BACKGROUND

[0002] In the existing battery piece power detection method, usually rely on large, complex test equipment to carry out performance evaluation. These devices not only bulky, occupy a large amount of space, and heavy, inconvenient to carry and move. This makes them in need to show the performance of the battery piece occasion, such as exhibition, technical exchange meeting or outdoor test, it is particularly inconvenient. In addition, the operation steps of these devices are complicated, need professional technical personnel to set and debug, and the data obtained are interpreted, which limits its use range and popularization degree to a great extent.

[0003] In addition to the volume and operation complexity, many existing battery piece power generation efficiency detection equipment also lack basic protection functions, such as waterproof and dustproof. In the changeable environment, such as outdoor or humid exhibition hall, these devices are easy to be affected by moisture and dust, resulting in inaccurate test results, and even damage the equipment. This not only affects the reliability of the test, but also increases the cost of maintenance and repair. Therefore, the existing detection equipment has many limitations in practical application, and cannot meet the efficient, convenient and reliable test requirements. UTILITY MODEL CONTENTS

[0004] The utility model provides a portable detection box, to solve the existing detection equipment structure complex, operation is complicated, the problem of inconveniently to the battery performance is understood directly.

[0005] The utility model is such realization, a portable detection box, include:

[0006] Power generation efficiency detection equipment, the power generation efficiency detection equipment is electric drive equipment;

[0007] First wire, the first wire is connected to the anode of the battery piece to be measured and the first electric terminal of the power generation efficiency detection equipment;

[0008] Second wire, the second wire is connected to the negative pole of the battery piece to be measured and the second electric terminal of the power generation efficiency detection equipment; And

[0009] Box, the power generation efficiency detection equipment, the first wire and the second wire are all placed in the box.

[0010] The utility model discloses a portable detection box which can intuitively observe the power performance of the measured battery piece and is suitable for occasions such as exhibitions where the performance of the battery piece needs to be displayed.

[0011] Optionally, the power generation efficiency detection device is at least one of a waterspout, a Ferris wheel, a blower, a windmill and a light bulb.

[0012] The utility model discloses a different power generation efficiency detection device, and the visual effect is attractive, not only can vividly show the conversion process of electric energy, but also can increase the interactivity and interestingness of display, and is especially suitable for use in occasions such as exhibitions.

[0013] Optionally, the utility model discloses a light source which is arranged in the box.

[0014] The utility model discloses a light source which is arranged in the box.

[0015] Optionally, the light source is a tungsten lamp.

[0016] The utility model discloses a tungsten lamp which is arranged in the box.

[0017] Optionally, the utility model discloses a power supply which is connected to the light source and is used for supplying power to the light source.

[0018] Optionally, the box is provided with a shock pad which fills the gap position in the box.

[0019] The utility model discloses a shock pad which fills the gap position in the box.

[0020] Optionally, the box is provided with a handle and / or a roller.

[0021] The utility model discloses a handle and a roller which facilitate the movement of the box, improve the convenience of movement and reduce the labor in the carrying process.

[0022] Optionally, the utility model discloses a light-shielding sheet and a third lead wire.

[0023] The third lead wire is used for connecting the measured battery pieces in series.

[0024] The utility model discloses a battery piece is carried out shading experiment to the battery piece of stringing through shading piece, and the external characteristic of the power generation efficiency detection equipment is observed, can have the intuitive understanding and understanding to the influence of shading to ordinary battery piece and ABC battery piece.

[0025] Optionally, further comprising a hidden crack simulation tool, the hidden crack simulation tool comprising:

[0026] A base, the base is provided with a placement platform for placing the battery piece to be tested;

[0027] A lower ram plate is placed above the placement platform, a plurality of protruding pressing blocks are provided on the surface of the lower ram plate facing the placement platform, and the surface of the pressing blocks facing the placement platform is spherical.

[0028] A support is provided between the base and the lower ram plate, the support is fixedly connected with the base, and the support is slidably connected with the lower ram plate, and the pressing blocks are uniformly arranged on the surface of the lower ram plate facing the placement platform.

[0029] The utility model discloses a placement platform is arranged on the base, and a lower ram plate is arranged at the corresponding position of the placement platform, and spherical pressing blocks are arranged on the lower ram plate, so that the external force impact on the battery piece can be simulated, the support connects the base and the lower ram plate, and guides the lower ram plate, thereby ensuring the accuracy of the impact of the lower ram plate. The hidden crack simulation tool has simple structure, low manufacturing cost, single connection relationship of components, small fault risk, and is convenient to maintain and repair.

[0030] Optionally, a track is arranged on the support, and a sliding block matched with the track is arranged on the lower ram plate.

[0031] The utility model discloses a track better for the lower ram plate provides direction, guarantees the falling direction of the lower ram plate, ensures the vertical motion of the lower ram plate, avoids lateral deviation, and improves the accuracy of the applied pressure.

[0032] Optionally, a retaining ring is arranged on the placement platform, and the retaining ring is arranged around the placement platform.

[0033] The utility model discloses a retaining ring that can effectively block the fragments, prevent the harm to the operator, reduce the occurrence of accidents, and improve the safety of the testing process. ACCURATE

[0034] Figure 1 It is the portable detection box structure schematic diagram provided by the utility model;

[0035] Figure 2 It is a kind of connection schematic diagram of internal component of portable detection box provided by the utility model;

[0036] Figure 3 is another equivalent schematic diagram of the connection of the internal components in the portable detection box provided by the utility model;

[0037] Figure 4 is a first visual angle structure schematic diagram of the hidden crack simulation tool provided by the utility model;

[0038] Figure 5 is an enlarged view of A;

[0039] Figure 6 is a second visual angle structure schematic diagram of the hidden crack simulation tool provided by the utility model;

[0040] Figure 7 is a third visual angle structure schematic diagram of the hidden crack simulation tool provided by the utility model;

[0041] Mark explanation:

[0042] 100, portable detection box; 110, box body; 120, power generation efficiency detection equipment; 130, first wire; 140, second wire; 150, light source; 160, third wire; 170, hidden crack simulation tool; 1701, base; 1702, lower ram plate; 1703, pressing block; 1704, support; 1705, track; 1706, sliding block; 1707, check ring; 1708, soft pad plate; 1709, scale; 1710, lock catch; 1711, buckle head; 1712, cover plate;

[0043] 200, battery piece; 210, traditional battery piece; 220, ABC battery piece. Specific implementation

[0044] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail by combining with the drawings and examples. The examples of the examples are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The examples described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In addition, it should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0045] In the description of the utility model, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0046] Furthermore, the terms "first", "second", and the like, do not denote any order, quantity, combination, or importance, but rather are used to nomenclature different components. Thus, such terms are used herein, for purposes of description and are in no way intended to limit the scope of the present application. In the description of the present application, it is to be understood that the specific devices matter should not be construed as limiting the present application but merely as an example for the implementation of the present application. Thus, the above description is not intended to limit the scope of the present application.

[0047] In the description of the present application, it is to be understood that the terms "mounting", "connected", and "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the present application, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique above of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the vertical and oblique below of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0049] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0050] The utility model discloses a portable detection box 100, which is characterized by the following technical scheme: the portable detection box 100 comprises a box body 110, a power generation efficiency detection device 120 and a first lead wire 130 and a second lead wire 140.

[0051] Example One

[0052] As Figure 1 、 Figure 2 The utility model provides a portable detection box 100, which comprises:

[0053] The power generation efficiency detection device 120 is an electric drive device.

[0054] The first lead wire 130 is connected to the positive electrode of the battery piece 200 to be tested and a first power connection end of the power generation efficiency detection device 120.

[0055] The second lead wire 140 is connected to the negative electrode of the battery piece 200 to be tested and a second power connection end of the power generation efficiency detection device 120.

[0056] The power generation efficiency detection device 120, the first lead wire 130 and the second lead wire 140 are all arranged in the box body 110.

[0057] The power generation efficiency detection device 120 displays the output power or the current of the battery piece 200 (for example, a solar cell) in the working state. The power generation efficiency detection device 120 is driven by the current, and when the power generation efficiency detection device 120 is driven, there will be obvious external characteristics, so the power generation efficiency of the battery piece 200 can be judged. When the power generation efficiency is high, the corresponding output power or current is larger, and the corresponding external characteristics will be more obvious (for example, the rotation speed of the power generation efficiency detection device 120 is faster or the brightness is more obvious), which is convenient for the human eye to observe.

[0058] Under normal circumstances, when the light intensity of the solar cell piece is within a certain range, the output voltage of the solar cell basically remains unchanged, and the power = voltage x current. When the voltage remains unchanged, the power is positively correlated with the current, that is, the greater the current, the greater the power, and the smaller the current, the smaller the power.

[0059] The power generation efficiency testing device 120 can specifically be one or more of the following: a water tornado driven by a hollow cup motor, a rotating Ferris wheel, a blower, a windmill, or a light bulb. The higher the power of the tested solar cell 200, the faster the rotation speed of the water tornado, Ferris wheel, or windmill driven by the hollow cup motor, the greater the airflow of the blower, and the brighter the light bulb; conversely, the lower the power of the tested solar cell 200, the slower the rotation speed of the water tornado, Ferris wheel, or windmill driven by the hollow cup motor, the smaller the airflow of the blower, and the dimmer the light bulb. The testing device can also be other electrically driven devices with externally visible characteristics; this is not limited to these specific devices.

[0060] like Figure 2 As shown, the first wire 130 and the second wire 140 are used to connect the positive and negative terminals of the battery cell 200 under test to the first and second terminals of the power generation efficiency testing device 120, respectively. During connection, the first wire 130 can be used to connect the positive terminal of the battery cell 200 under test to the first terminal of the power generation efficiency testing device 120, and the second wire 140 can be used to connect the negative terminal of the battery cell 200 under test to the second terminal of the power generation efficiency testing device 120. That is, the first wire 130 can be used to connect the positive terminal of the battery cell 200 under test to the power generation efficiency testing device 120, and the second wire 140 can be used to connect the negative terminal of the battery cell 200 under test to the power generation efficiency testing device 120. Through the first wire 130 and the second wire 140, a closed loop can be formed between the battery cell 200 under test and the power generation efficiency testing device 120. The selection of wires is important for measurement accuracy and safety, and they typically need to have good conductivity, sufficient flexibility, and an appropriate insulation level.

[0061] The power generation efficiency testing device 120 can be mainly used for control experiments. For example, two solar cells 200 of different brands or types can be connected to the power generation efficiency testing device 120 through the first wire 130 and the second wire 140, respectively. By observing the external characteristics of the power generation efficiency testing device 120, the power of the solar cells 200 of different brands can be observed, and the power and current of each brand of solar cells 200 can be compared and understood more intuitively.

[0062] The enclosure 110 is typically made of sturdy plastic or metal materials (such as ABS plastic or aluminum alloy), which have good impact resistance and abrasion resistance. The power generation efficiency testing device 120 and its first wire 130 and second wire 140 are placed inside the enclosure 110, which not only helps protect these components from the influence of the external environment (such as dust, moisture, etc.), but also facilitates transportation and relocation, improving portability.

[0063] It can be understood that the size of the box 110 is designed according to the size of the power generation efficiency detection device 120, and all components are conveniently placed in the box. The battery sheet 200 to be tested can also be placed in the box 110.

[0064] In this embodiment, by setting the power generation efficiency detection device 120, the portable detection box 100 can intuitively observe the power or current performance of the battery sheet 200, and is suitable for exhibitions and other occasions where the performance of the battery sheet 200 needs to be displayed. The box 110 has a waterproof and dustproof function, and the power generation efficiency detection device, the first wire 130 and the second wire 140 are placed in the box 110, which is convenient to carry and use, ensures stable work in various environments, and improves the convenience and reliability of the test.

[0065] Example Two

[0066] In some embodiments, the power generation efficiency detection device 120 is at least one of a water tornado, a Ferris wheel, a blower, a windmill, or a light bulb.

[0067] The water tornado is a dynamic display device formed by rotating water flow. The water tornado usually consists of a transparent cylindrical container, a central nozzle and a water pump. The water pump driven by electric energy draws water from the bottom to the top and sprays it out through the nozzle, forming a rotating water column, i.e. a water tornado. The rotation speed and height of the water tornado are proportional to the power output or current of the battery sheet 200, so that the observer can intuitively understand the power performance of the battery sheet 200 by observing the dynamic changes of the water tornado. In some embodiments, the material of the cylindrical container can be plastic, glass or other materials. The cylindrical container is used to contain the liquid sprayed by the central nozzle. The liquid can be pure water or liquid mixed with other substances. The color of the liquid can be transparent, red, blue, etc. In addition, in order to more easily compare the power generation efficiency of two different battery sheets 200, some objects that can rotate with the liquid can be placed in the cylindrical container, such as foam balls, paper scraps, etc. When the liquid in the cylindrical container rotates, the foam balls or paper scraps inside also rotate, which can enhance the observability of the water tornado and facilitate the differentiation of the power generation efficiency of two different battery sheets 200.

[0068] The Ferris wheel is a dynamic display device formed by rotating a wheel. In the power generation efficiency detection device 120, the Ferris wheel usually consists of a wheel and a central motor. The motor driven by electric energy makes the wheel of the Ferris wheel rotate. The rotation speed of the Ferris wheel is proportional to the power or current output of the battery sheet 200, and the stronger the power or current output, the faster the Ferris wheel rotates. This design can intuitively display the power conversion efficiency of the battery sheet 200, so that the audience can easily understand the performance of the battery sheet 200, such as the power generation efficiency, by observing the rotation of the Ferris wheel.

[0069] The power generation efficiency detection device 120 can be a Ferris wheel, a water tornado, or both. The two power generation efficiency detection devices 120 are visually attractive and can vividly demonstrate the conversion process of electric energy and increase the interactivity and interest of the demonstration, which is particularly suitable for use in exhibitions and other occasions.

[0070] In addition, the power generation efficiency detection device 120 can also be set as at least one of a blower, a windmill, and a light bulb. The specific setting mode can refer to the above examples, which will not be described here.

[0071] Example Three

[0072] As shown in Figure 1 In some embodiments, the portable detection box 100 further includes a light source 150 disposed in the box body 110.

[0073] The light source 150 is placed in the box body 110. The light source 150 can be equipped with a light intensity regulator to simulate different light conditions from weak light to strong light. For example, a switch for adjusting the light intensity of the light source 150 can be provided.

[0074] The light source 150 can also use different types of bulbs or LEDs to simulate different light spectra (such as sunlight spectrum, monochromatic light of different wavelengths, etc.) in order to more comprehensively demonstrate the performance of the battery sheet 200.

[0075] It can be understood that the light source 150 can be equipped with a portable power supply. When the light source 150 needs to be powered, the power supply is connected to the light source 150 to supply power to the light source 150. The light source 150 is powered by the portable power supply to ensure its sustainability when used on site. A power cord can also be provided for connecting to an external power source to increase the power and endurance time of the light source 150.

[0076] The light source 150 is provided in the present embodiment to simulate light, which can be conveniently used in some scenes with insufficient light, so that the performance of the battery sheet 200 to be tested can be better demonstrated, and the test convenience is improved.

[0077] In some embodiments, the light source 150 is a tungsten lamp. The light spectrum emitted by the tungsten lamp is relatively close to the sunlight spectrum, especially the visible light part, which can better simulate natural light conditions.

[0078] Example Four

[0079] In some embodiments, a shock-absorbing pad (not shown) is provided in the box body 110 to fill the gap position in the box body 110.

[0080] Specifically, the shock-absorbing pad can fill the entire box 110, and component placement grooves are formed on the shock-absorbing pad for placing components contained in the box 110. The shock-absorbing pad can ensure the positions of the components in the box 110 by filling the gap positions in the box 110, and prevent the components from loosening or shifting during movement or transportation. When subjected to external impact, the shock-absorbing pad can absorb and disperse external vibration to protect the components in the box 110 from damage.

[0081] Example Five

[0082] In some embodiments, the box 110 is provided with a handle (not shown) and / or a roller (not shown).

[0083] The handle can be arranged on the two sides or the top of the box 110 to facilitate the user to carry the device. The roller can be arranged on the bottom of the box 110 to facilitate the user to push the device on the ground. The box 110 can be provided with only a handle, only a roller, or both a handle and a roller, which is not limited herein.

[0084] Both the handle and the roller can facilitate the movement of the box 110, improve the convenience of movement, and reduce the labor in the carrying process.

[0085] Example Six

[0086] In some embodiments, the power generation efficiency detection device further comprises a light shield (not shown) and a third lead wire 160.

[0087] The third lead wire 160 is used to connect the battery pieces 200 in series.

[0088] When there are multiple battery pieces 200, the multiple battery pieces 200 are connected in series through the third lead wire 160 to form a battery string. When connected in series, the third lead wire 160 connects the positive electrode of one battery piece 200 and the negative electrode of another battery piece 200 to form a series connection path.

[0089] The battery pieces 200 placed at the first end and the last end of the battery string have one positive electrode connected to the first lead wire 130 and the other negative electrode connected to the second lead wire 140. The battery string and the power generation efficiency detection device 120 form a closed loop under the connection of the first lead wire 130 and the second lead wire 140, and the multiple battery pieces 200 work together to deliver current to the power generation efficiency detection device 120, so that the power generation efficiency detection device 120 is started.

[0090] In some embodiments, the light shield can be used for light shielding experiments, and the light shield can be used to shield the entire battery piece 200 or partially shield the battery piece 200.

[0091] For example, Figure 3As shown, in the battery string, each conventional battery piece 210 can be equivalent to a large breakdown voltage (usually tens of volts to hundreds of volts or even higher) equivalent diode in parallel with a power supply. When the battery piece 200 is shaded, the equivalent diode is reverse biased. The battery piece 200 cannot generate electricity normally when it is shaded, but since it is still in series with the unshaded part in the circuit, it will be in a reverse bias state, that is, these shaded battery pieces 200 will actually become a resistance, hindering the current from passing through.

[0092] In the loop formed by the battery string and the power generation efficiency detection device 120, the shaded battery piece 200 is equivalent to a large resistance in series in the loop, which diverts most of the voltage in the loop, at which time the voltage obtained by the power generation efficiency detection device 120 decreases, and the external characteristics of the power generation efficiency detection device 120 weaken (for example, if the power generation efficiency detection device 120 is a water tornado, the rotation speed of the water column formed will decrease; if the power generation efficiency detection device 120 is a Ferris wheel, the rotation speed of the Ferris wheel will decrease). It can be understood that when the resistance of the battery piece 200 is too large, the voltage obtained by the power generation efficiency detection device 120 is extremely small, and the external characteristics of the power generation efficiency detection device 120 disappear.

[0093] If the reverse voltage of the battery piece 200 exceeds the avalanche breakdown voltage of the equivalent diode, the diode will undergo avalanche breakdown. Avalanche breakdown is a physical phenomenon that occurs when the reverse voltage of a diode exceeds a certain value, resulting in a large number of carriers within the diode, causing a rapid increase in current. Because the current is concentrated in a very small area, the temperature in the local area will rise sharply, forming a so-called "hot spot". The hot spot not only causes the part of the battery to be damaged due to overheating, but also affects the efficiency of the entire photovoltaic module.

[0094] And the ABC battery piece 220 is equivalent to an equivalent diode, a power supply, and a bypass diode in parallel, and the breakdown voltage of the bypass diode is small (usually a Zener diode, with a breakdown voltage of a few volts to a few tens of volts). When the battery voltage is greater than the reverse on-voltage of the bypass diode, the bypass diode will be turned on, and the turned-on bypass diode will act like a wire, thereby bypassing the shaded battery or battery string from the circuit. The loop formed by the battery string and the power generation efficiency detection device 120 is completely conductive, at which time the power generation efficiency detection device 120 obtains most of the voltage, and the external characteristics of the power generation efficiency detection device 120 are obvious.

[0095] In this embodiment, the shading experiment is performed on the series-connected battery pieces 200 using the shading piece, and by observing the external characteristics of the power generation efficiency detection device 120, the effect of shading on the ordinary battery piece 200 and the ABC battery piece 220 can be intuitively understood.

[0096] Example Seven

[0097] As Figures 4 to 7 shown, in some embodiments, the portable detection box 100 also includes a hidden crack simulation tool, which includes:

[0098] a base 1701, on which a placement platform is arranged for placing the battery sheet 200 to be tested;

[0099] a lower impact plate 1702, which is placed above the placement platform, and on the surface facing the placement platform, a plurality of protruding pressing blocks 1703 are arranged, and the surface facing the placement platform is spherical;

[0100] a support 1704, which is arranged between the base 1701 and the lower impact plate 1702, and is fixedly connected with the base 1701 and slidably connected with the lower impact plate 1702.

[0101] The base 1701 is the basic part of the entire tool, which provides a stable support platform. On the base 1701, a placement platform is arranged for fixing or placing the battery sheet 200 to be tested.

[0102] The lower impact plate 1702 is a key component for simulating hidden crack conditions by directly acting on the battery sheet 200. The lower impact plate 1702 is located above the placement platform, and the surface facing the placement platform is provided with a plurality of protruding pressing blocks 1703. The design surface of these pressing blocks 1703 is spherical, which helps to generate more uniform pressure distribution on the battery sheet 200, while simulating various stress conditions that may be encountered in real environment, such as hail impact. By adjusting the number, position of the pressing blocks 1703 and the falling height of the lower impact plate 1702, different hidden crack conditions can be simulated.

[0103] The support 1704 connects the base 1701 and the lower impact plate 1702, ensuring that the lower impact plate 1702 can move smoothly in the vertical direction. The support 1704 is fixedly connected with the base 1701, while the connection between the support 1704 and the lower impact plate 1702 is slidable, and the lower impact plate 1702 can move up and down along the support 1704 to perform pressing test on the battery sheet 200 placed below it. The design of the support 1704 ensures the stability during the falling process, provides guidance for the falling of the lower impact plate 1702, and avoids test errors caused by instability of the device itself.

[0104] The use method of the tool is as follows: first, the battery piece 200 to be tested is placed on the placement platform, then the lower plate 1702 is caused to fall from a preset height, so as to simulate the stress that the battery piece 200 may suffer in the process of transportation, installation or use. The battery piece 200 after being impacted by the lower plate 1702 can be used for subsequent observation, recording and other related performance detection.

[0105] In the embodiment, by arranging the placement platform on the base 1701, arranging the lower plate 1702 at the corresponding position of the placement platform, and arranging the spherical pressing block 1703 on the lower plate 1702, the external force impact condition of the battery piece 200 can be simulated. The bracket 1704 connects the base 1701 and the lower plate 1702, and guides the lower plate 1702, so as to ensure the accuracy of the lower plate 1702 when impacting. The hidden crack simulation tool 170 has simple structure, low manufacturing cost, simple connection relationship of components, small fault risk and is convenient for maintenance.

[0106] In some embodiments, the hidden crack simulation tool 170 can be used for hidden crack experiment, and the hidden crack simulation tool 170 can be used for simulating the external force impact of the battery piece. The first lead wire 130 and the second lead wire 140 connect the battery piece 200 to be tested after being impacted by the hidden crack simulation tool 170 and the power generation efficiency detection equipment 120, so as to detect the battery piece after being impacted. The power of the battery piece can be directly observed by the power generation efficiency detection equipment 120.

[0107] The tool can be mainly used for control experiment, for example, two battery pieces of different brands are respectively impacted by the hidden crack simulation tool 170, the battery pieces 200 after being impacted are respectively connected to the power generation efficiency detection equipment 120 through the first lead wire 130 and the second lead wire 140, and the power of the battery pieces after being impacted of different brands is observed through the external display of the power generation efficiency detection equipment 120, so that the anti-hidden crack ability of the battery pieces of different brands can be more directly understood.

[0108] In some embodiments, the cover plate 1712 is arranged on the surface of the lower plate 1702 away from the placement platform, and the cover plate 1712 is detachably connected with the lower plate 1702. The cover plate 1712 can protect the parts connected to the lower plate 1702, so as to avoid damage to the parts by external force. The cover plate 1712 is detachable, so that the parts connected to the lower plate 1702 can be conveniently operated and maintained. Meanwhile, the cover plate 1712 covers the lower plate 1702, so that the parts connected to the lower plate 1702 are not exposed, and the appearance looks more beautiful.

[0109] It can be understood that a nameplate indicating the mass of the lower plate 1702 can be arranged on the lower plate 1702 or the cover plate 1712, so as to facilitate the operator to estimate the force of the lower plate 1702 falling.

[0110] In some embodiments, the pressure blocks 1703 are evenly distributed on the surface of the lower impact plate 1702 facing the placement platform.

[0111] The distribution of the pressure blocks 1703 can be as follows: equal spacing, where the bottom surface of the lower slamming plate 1702 is divided into several small areas of equal size, with one pressure block 1703 placed in each area. Alternatively, a matrix distribution, where the pressure blocks 1703 are arranged in a matrix, forming rows and columns, with equal spacing between each row and column to ensure uniform spacing between each pressure block 1703. A concentric circle distribution, where the pressure blocks 1703 are arranged in concentric circles on the bottom surface of the lower slamming plate 1702, with the number of pressure blocks 1703 on each circle gradually increasing or decreasing. Other uniform distribution methods are also possible and are not limited here.

[0112] The uniform distribution of the pressure blocks 1703 ensures that the pressure applied to the solar cell 200 is more even, avoiding unnatural cracks or damage caused by excessive local pressure. This helps to more realistically simulate the stress distribution that the solar cell 200 may encounter in actual use, thereby improving the accuracy and reliability of the test.

[0113] In some embodiments, the pressure block 1703 and the lower striking plate 1702 are detachably connected. The pressure block 1703 and the lower striking plate 1702 can be connected by means of threaded connection, snap-fit ​​connection, magnetic connection, pin connection, etc., or other connection methods that are easy to disassemble and assemble, which are not limited here.

[0114] Positioning holes are provided on the lower impact plate 1702 to ensure accurate alignment of the pressure block 1703 during connection. The pressure block 1703 and the lower impact plate 1702 are then connected using fasteners such as nuts, clips, magnets, and pins to ensure reliable connection.

[0115] The pressure block 1703 and the lower impact plate 1702 are detachably connected, which makes it easy to change the weight, shape and connection position of the pressure block 1703 according to different testing requirements, thereby improving the applicability of the equipment.

[0116] like Figure 6 As shown, in some embodiments, a track 1705 is provided on the bracket 1704, and a slider 1706 adapted to the track 1705 is provided on the lower plate 1702.

[0117] Track 1705 is mounted on bracket 1704, typically vertically aligned, to ensure that the lower impact plate 1702 can move along a vertical path. Slider 1706 is mounted at the corresponding position on the lower impact plate 1702, matching the track 1705 on bracket 1704. Slider 1706 can slide freely on track 1705 while maintaining the stability of the lower impact plate 1702.

[0118] The track 1705 better guides the falling of the lower ram 1702, ensures the falling direction of the lower ram 1702, ensures the vertical movement of the lower ram 1702, avoids lateral deviation, and improves the accuracy of the applied pressure. At the same time, the cooperation of the track 1705 and the sliding block 1706 reduces friction and prolongs the service life of the track 1705 and the sliding block 1706. Appropriate lubricant can be added between the track 1705 and the sliding block 1706 to better reduce friction.

[0119] As shown in Figure 4 and 6 , in some embodiments, a retaining ring 1707 is arranged on the placement platform, and the retaining ring 1707 is arranged around the placement platform.

[0120] The retaining ring 1707 is installed around the placement platform to form a closed structure. The retaining ring 1707 can be fixed or detachable, which is convenient for installation and maintenance. The height of the retaining ring 1707 should be less than the distance between the pressing block 1703 and the lower ram 1702, so as to avoid blocking the falling of the lower ram 1702

[0121] During the hidden crack test process, the battery piece 200 may produce fragments or tiny splashes. The retaining ring 1707 can effectively block these fragments, prevent injury to the operator, reduce the occurrence of accidents, and improve the safety of the test process.

[0122] As shown in Figure 4 , in some embodiments, a soft cushion plate 1708 is arranged on the placement platform.

[0123] The soft cushion plate 1708 is a plate-shaped object with uniform thickness, which is laid on the placement platform. Generally, the size of the soft cushion plate 1708 should be greater than or equal to the size of the placement platform, so as to ensure that the battery piece 200 is completely placed on the soft cushion plate 1708 without being exposed outside the platform.

[0124] In use, the battery piece 200 is placed on the soft cushion plate 1708 without directly contacting the placement platform. This can effectively protect the battery piece 200 and reduce damage caused by uneven hardness or uneven surface of the placement platform. The material of the soft cushion plate 1708 can be high-density sponge, rubber, silicone, etc. The soft cushion plate 1708 can be fixed to the placement platform using magic tape, which is convenient for disassembly and replacement.

[0125] As shown in Figure 4 , in some embodiments, a scale 1709 is arranged on the support 1704.

[0126] The scale 1709 is usually arranged in the vertical direction of the support 1704 to ensure that the displacement of the lower plate 1702 can be accurately controlled during the downward movement. Specifically, the scale 1709 can be directly marked on the metal surface of the support 1704 to ensure the permanence and stability of the scale 1709. Alternatively, the scale 1709 can be fixed on the support 1704 by using high-quality adhesive scale 1709 ruler to facilitate replacement and adjustment. Alternatively, the scale 1709 line can be sprayed on the surface of the support 1704 by using durable paint to ensure that the scale 1709 line is not easy to wear. Other marking methods can also be used, which are not limited herein.

[0127] Specifically, the content of the scale 1709 can be the height from the placement platform, the acceleration that can be reached when falling from the height to the placement platform, or other physical parameters, which are not limited herein.

[0128] On the one hand, the scale 1709 can accurately indicate the displacement distance of the lower plate 1702 to ensure that the falling position and force of each test are consistent, standardize the test process, and improve the repeatability of the test results. On the other hand, the scale 1709 facilitates the operator to quickly read and align the scale 1709, saves the adjustment time, and improves the test efficiency.

[0129] As shown in FIGS. 17A and 17B, in some embodiments, a lock catch 1710 is arranged on the support 1704, and a buckle head 1711 adapted to the lock catch 1710 is arranged on the lower plate 1702. Figure 4 and Figure 5 As shown in FIGS. 17A and 17B, in some embodiments, a lock catch 1710 is arranged on the support 1704, and a buckle head 1711 adapted to the lock catch 1710 is arranged on the lower plate 1702.

[0130] The lock catch 1710 is arranged on the support 1704, specifically at a position far from the base 1701. The buckle head 1711 adapted to the lock catch 1710 is arranged on the lower plate 1702. When the lock catch 1710 and the buckle head 1711 are buckled, the lower plate 1702 can be fixed at this position, which facilitates the operator to take and place the battery sheet 200 on the placement platform.

[0131] The buckling between the lock catch 1710 and the buckle head 1711 can be hook type, buckle type, latch type or other forms. Specifically, the lock catch 1710 and the buckle head 1711 are arranged in a hook type buckling. The lock catch 1710 is arranged as a protrusion, and the buckle head 1711 is arranged as a hook facing the direction of the lock catch 1710. When the buckle head 1711 is hung on the protrusion, the buckling between the lock catch 1710 and the buckle head 1711 is completed, and the lower plate 1702 is fixed at this position. When the buckle head 1711 is moved to separate the buckle head 1711 from the protrusion, the buckling between the lock catch 1710 and the buckle head 1711 is released, and the lower plate 1702 falls.

[0132] Understandably, depending on the size of the impact plate 1702 and the needs of the test, one or more latches 1710 can be set to ensure the stability and precise positioning of the impact plate 1702.

[0133] The combination of latch 1710 and buckle 1711 allows for precise control of the height of the impact plate 1702, ensuring consistent positioning for each test and improving test repeatability. It also facilitates the handling of the battery cells 200 by operators.

[0134] like Figure 7 As shown, in some embodiments, at least three feet 1713 are provided on the surface of the base 1701 facing away from the placement platform.

[0135] The number of support legs 1713 is typically three or four, but can be increased depending on the actual usage. Support legs 1713 provide point support, which, compared to the full-surface support of the base 1701, requires less precision in the machining of the base 1701's bottom surface, thus saving production costs. At least three support legs 1713 can form a stable support point, ensuring the base 1701 remains stable on different ground surfaces and preventing the equipment from shaking or tilting during impact testing. This ensures the equipment remains stable during use and prevents instability of the base 1701 from affecting test results.

[0136] By incorporating multiple support legs 1713, the equipment can be used not only on flat ground but also on sloped or irregular surfaces. Stability is maintained simply by adjusting the height of each support leg 1713. This allows the equipment to operate effectively in diverse environments such as different areas of a factory, warehouses, and transportation sites, thus expanding its application range.

[0137] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable detection case, characterized in that, The utility model relates to a battery piece power generation efficiency detection device, which comprises: a power generation efficiency detection device, which is an electric drive device; a first wire connecting a positive electrode of a battery piece to be tested and a first power connection end of the power generation efficiency detection device; a second wire connecting a negative electrode of the battery piece to be tested and a second power connection end of the power generation efficiency detection device; and a box in which the power generation efficiency detection device, the first wire and the second wire are placed. The power generation efficiency detection device is at least one of a waterspout, a Ferris wheel, a blower, a windmill or a bulb.

2. The portable detection case of claim 1, wherein, A light source is further included and placed in the box.

3. The portable detection case of claim 1, wherein, The light source is a tungsten filament lamp.

4. The portable test case of claim 3, wherein, A power supply is further included and connected to the light source to supply power to the light source.

5. The portable detection case of claim 3 or 4, wherein, A shock-absorbing pad is arranged in the box to fill the gap in the box.

6. The portable test case of claim 1, wherein, A handle and / or a roller are arranged on the box.

7. The portable test case of claim 1, wherein, A light-shielding sheet and a third wire are further included.

8. The portable detection case of claim 1, wherein, The third wire is used to connect the battery pieces to be tested in series. A hidden crack simulation tool is further included, which comprises:

9. The portable test case of claim 1, wherein, a base provided with a placement platform for placing the battery piece to be tested; a lower pressing plate placed above the placement platform, the lower pressing plate being provided with a plurality of protruding pressing blocks on the surface thereof facing the placement platform, and the surface of the pressing blocks facing the placement platform being a spherical surface; a support arranged between the base and the lower pressing plate, the support being fixedly connected to the base and slidably connected to the lower pressing plate, and the pressing blocks being arranged on the surface of the lower pressing plate facing the placement platform. A track is arranged on the support, and a sliding block adapted to the track is arranged on the lower pressing plate.

10. The portable test case of claim 9, wherein, A retaining ring is arranged on the placement platform, and the retaining ring is arranged around the placement platform.

11. The portable test case of claim 9, wherein, ​

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