Laser battery test system

Abstract

The invention discloses a laser battery test system, which is used for measuring the photoelectric conversion efficiency of a laser battery under a high-power laser irradiation condition, and comprises a laser power test device and a laser battery test device, the laser power test device comprises a laser light barrier and an optical power meter, and is used for calculating the laser power; the laser battery testing device comprises a laser battery substrate, a first adapter plate, a cooling heat dissipation plate and a battery management system and is used for tracking the maximum output power of a laser battery. And the photoelectric conversion efficiency of the laser battery is the ratio of the maximum output power of the laser battery to the laser power. According to the invention, the problem of high-power laser power measurement is solved, the laminar flow path of the cooling heat dissipation plate is utilized to efficiently cool the temperature, the performance of the laser battery is prevented from being reduced, and the advantages are obvious.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic testing, and in particular to a laser battery testing system. Background Art

[0002] With the development of current laser energy transmission technology, the performance test of laser cells under high-power laser irradiation faces significant challenges. First, high-power lasers have the characteristics of high power and large spot area, and high-power and large-area laser spots cannot be directly measured using an optical power meter. Therefore, a laser light baffle needs to be designed to overcome this problem. Second, laser cells under high-power laser irradiation will generate a lot of heat when working. Excessive temperature will cause the performance of the laser cell to deteriorate, so a corresponding cooling device needs to be designed to cool the laser cell.

[0003] Therefore, it is urgent to propose a laser battery testing system suitable for high-power lasers to test and obtain the optimal performance of the laser battery.

[0004] It will be understood that the above statements merely provide background technology related to the present invention and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser battery testing system for measuring the performance of a laser battery under high-power laser irradiation conditions.

[0006] In order to achieve the above-mentioned objectives, the present invention provides a laser battery testing system, including a laser power testing device and a laser battery testing device; the laser power testing device includes: a laser light shielding plate; an optical power meter, which is arranged on one side of the laser light shielding plate; the laser battery testing device includes: a laser battery substrate, on which a laser battery is arranged; a first adapter plate, which is arranged at the upper and lower ends of the laser battery substrate and is electrically connected to the laser battery substrate; a cooling heat dissipation plate, which is attached to the laser battery substrate; and a battery management system, which is electrically connected to the first adapter plate.

[0007] In which, a high-power laser is irradiated onto the laser light shielding plate, and a plurality of identical light-transmitting areas are provided on the laser light shielding plate. The light-transmitting areas are evenly distributed to allow an optical power meter to measure the average optical power density of the high-power laser passing through the light-transmitting areas and calculate the laser power; the laser battery testing device is used to track the maximum output power of the laser battery; the photoelectric conversion efficiency of the laser battery is the ratio of the maximum output power of the laser battery to the laser power.

[0008] Preferably, the area of ​​the laser light-blocking plate is larger than the spot area of ​​the high-power laser.

[0009] Preferably, the laser cell substrate and the cooling and heat dissipation plate, as well as the cooling and heat dissipation plate and the battery management system are detachably connected by fasteners.

[0010] Preferably, the cooling heat sink includes: a plurality of microchannels, equidistantly distributed in parallel; an inlet manifold, arranged at one end of the cooling heat sink, respectively connected to one end of each microchannel, and connected to the outlet end of an external cooling device; an outlet manifold, arranged at the other end of the cooling heat sink, respectively connected to the other end of each microchannel, and connected to the inlet end of an external cooling device.

[0011] Preferably, the interior of the cooling and heat dissipation plate adopts a parallel flow channel layout, and the cooling medium in the cooling device flows from the inlet manifold through the microchannel to the outlet manifold, forming multiple laminar flow paths of unidirectional flow.

[0012] Preferably, the width of the microchannel is 100um to 400um.

[0013] Preferably, the battery management system includes: a welding plate, a surface of which is provided with matrix welding slots, which are welded to the wires led out from the output end of the first adapter plate, and the welding slots in the same row are interconnected through an embedded bus; a second adapter plate, an input end of which is connected to the embedded bus, and an output end is provided with a pluggable wiring slot; a series-parallel board, connected to the pluggable wiring slot, for dynamically adjusting the circuit connection mode; an MPPT circuit board, an input end of which is connected to the output end of the series-parallel board, dynamically adjusting the working point to track and maintain the output power at the maximum point in real time.

[0014] Preferably, the laser battery testing device further comprises a transparent protective layer, which is arranged on a side of the laser battery substrate away from the cooling and heat dissipation plate.

[0015] Preferably, the transparent protective layer is an acrylic plate.

[0016] Preferably, the laser light blocking plate is made of a high temperature resistant material with a high temperature resistance greater than 200°C.

[0017] In summary, compared with the existing technology, the laser battery testing system provided by the present invention solves the problem of high-power laser power measurement through the structural design of the laser light shield, and uses the laminar flow path of the cooling heat sink to efficiently control the temperature to prevent the performance of the laser battery from declining. At the same time, the battery management system supports dynamic topology adjustment to achieve accurate maximum power testing, which has great practicality and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic side view of the laser light baffle in the present invention;

[0019] Figure 2 Schematic diagram of the front view of the laser light shield in the present invention;

[0020] Figure 3 This is a schematic structural diagram of the laser battery testing device of the present invention;

[0021] Figure 4 This is a schematic structural diagram of a laser battery testing device equipped with a transparent protective layer according to the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the laser battery substrate in the present invention;

[0023] Figure 6 A schematic cross-sectional view of a cooling and heat dissipation plate in the present invention;

[0024] Figure 7 Schematic diagram of the power supply system in the present invention.

[0025] In the picture:

[0026] 1-laser light-blocking plate, 11-light-transmitting area, 2-transparent protective layer, 3-laser cell substrate, 31-laser cell, 32-first adapter plate, 33-welding strip, 4-cooling heat sink, 41-inlet manifold, 42-outlet manifold, 43-microchannel 43, 5-battery management system, 51-welding plate, 52-welding notch, 53-second adapter plate, 54-series-parallel plate, 55-MPPT circuit board, 56-pluggable wiring slot, 6-fasteners. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 To the attached Figure 7 , the present invention is further explained by describing a preferred specific embodiment in detail.

[0028] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0029] It should be noted that, in the present invention, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] like Figure 1 、 Figure 3 and Figure 5 As shown, the present invention provides a laser battery testing system for measuring the performance of a laser battery 31 under high-power laser irradiation conditions, including a laser power testing device and a laser battery testing device.

[0031] Among them, the laser cell is a photovoltaic cell that receives laser energy and converts it into electrical energy, and is used for photoelectric conversion; the laser power testing device is used to measure the laser power of a high-power laser in the kilowatt level, and the laser battery testing device is used to track the maximum output power of the laser cell 31. The performance of the laser cell 31 is expressed as the photoelectric conversion efficiency of the laser cell 31, that is, the ratio of the maximum output power of the laser cell 31 to the laser power of the high-power laser.

[0032] Furthermore, in the prior art, the laser power of ordinary lasers can be directly measured using an optical power meter. However, for high-power lasers in the kilowatt range, the laser spot area generated by them far exceeds the receiving area of ​​the optical power meter and cannot be directly measured. Figure 1 and Figure 2 As shown, the present invention designs a laser power testing device, including a laser light baffle 1 and an optical power meter (not shown) disposed on one side of the laser light baffle 1. A high-power laser is irradiated onto the laser light baffle 1. The laser light baffle 1 is provided with multiple identical light-transmitting areas 11, and the light-transmitting areas 11 are evenly distributed to allow the optical power meter to measure the average optical power density of the high-power laser passing through the light-transmitting areas 11, thereby calculating the laser power of the entire laser spot. It is worth noting that the material of the laser light baffle 1 must meet the requirements of high-temperature stability, with a high temperature resistance greater than 200°C, and the area of ​​the laser light baffle 1 must be larger than the spot area of ​​the high-power laser to prevent the high-power laser from irradiating other objects and causing damage.

[0033] For example, Figure 2As shown, in a preferred embodiment of the present invention, the laser light baffle 1 is made of high-strength duralumin, and the laser light baffle 1 is a rectangle having an area larger than the area of ​​the high-power laser spot. The light-transmitting area 11 is a circular hole. Specifically, with the center of the rectangle as the center of the circle, multiple groups of identical circular holes are arranged at equal intervals in four directions spaced 90° apart from each other, respectively, along the radius direction of the inscribed circle of the rectangle.

[0034] Further, such as Figure 3 and Figure 5 As shown, the laser battery testing device includes: a laser battery substrate 3, a first adapter plate 32, a cooling and heat dissipation plate 4 and a battery management system 5; the laser battery 31 is attached to one side surface of the laser battery substrate 3; the first adapter plate 32 is arranged at the upper and lower ends of the laser battery substrate 3, and is connected to the laser battery substrate 3 through a welding strip 33 to achieve electrical connection between the two, and the output end of the first adapter plate 32 leads to a wire connected to the battery management system 5; the cooling and heat dissipation plate 4 is attached to the other side surface of the laser battery substrate 3, and is used to cool and dissipate heat for the laser battery 3 when the laser irradiates the laser battery 3.

[0035] The laser cell substrate 3 and the cooling plate 4, as well as the cooling plate 4 and the battery management system 5, are detachably connected using fasteners 6, facilitating replacement and maintenance. In a preferred embodiment of the present invention, the fasteners 6 are screws.

[0036] Further, such as Figure 4 As shown, the laser battery testing device also includes a transparent protective layer 2, disposed on the side of the laser battery substrate 3 away from the cooling plate 4, covering the surface of the laser battery 31. This layer protects the laser battery 31 mounted on the laser battery substrate 3 from direct contact with the outside world when not being tested, preventing dust and moisture from invading the battery surface and preventing electrode corrosion. Fasteners 6 are also used to detachably connect the transparent protective layer 2 to the laser battery substrate 3. In a preferred embodiment of the present invention, the transparent protective layer 2 is an acrylic sheet.

[0037] Furthermore, in a preferred embodiment of the present invention, the laser cells 31 utilize a hybrid cell array layout, which includes cells of various shapes to maximize the laser spot receiving area, reduce welding losses and uneven distribution, and thus improve overall layout efficiency. Specifically, the hybrid cell layout is characterized by: the central area of ​​the laser cell substrate 3 is configured as a rectangular cell, and the edge area is triangular or trapezoidal cell, which adapts to the contour of the laser cell substrate 3. The four corners of the laser cell substrate 3 are specially positioned as 15° acute-angle triangles to seamlessly fill the blind spots of the laser cell substrate 3.

[0038] Further, such as Figure 6 As shown, the cooling heat sink 4 is fitted with the laser cell substrate 3. The cooling heat sink 4 has a parallel flow channel layout, including a number of microchannels 43 equidistantly distributed in parallel. An inlet manifold 41 and an outlet manifold 42 are provided at both ends of the cooling heat sink 4. The inlet manifold 41 is connected to one end of each microchannel 43, and the outlet manifold 42 is connected to the other end of each microchannel 43, forming multiple laminar flow paths that flow in one direction from the inlet manifold 41 through the microchannel 43 to the outlet manifold 42. The inlet manifold 41 is connected to the outlet end of the external cooling device, and the outlet manifold 42 is connected to the inlet end of the external cooling device, forming a cooling cycle. Specifically, the outlet end of the external cooling device outputs a cooling medium, which enters each microchannel 43 through the inlet manifold 41, flows to the outlet manifold 42, and then flows out to the external cooling device, thereby cooling the laser cell 31.

[0039] It can be understood that the size of the microchannel 43 is designed to be small, with a width of 100um to 400um, which makes it easier for the flow of the fluid to enter a laminar state. The flow of the fluid in laminar flow is more regular, which is conducive to the orderly transfer of heat and greatly improves the rate of heat transfer from the solid surface to the cooling medium.

[0040] Further, such as Figure 7 As shown, the battery management system 5 includes: a welding plate 51, whose surface is provided with a matrix of welding slots 52 for welding the wires led out of the first adapter plate 32. The welding slots 52 in the same row are interconnected and independently led out via an embedded bus; a second adapter plate 53, stacked on the welding plate 51, with its input end connected to the embedded bus and its output end provided with a pluggable wiring slot 56 for quickly switching circuit topology; a series-parallel board 54, connected to the pluggable wiring slot 56, for dynamically adjusting the circuit connection mode. It should be noted that the series-parallel board 54 supports a variety of series and parallel circuit combinations to adapt to the testing requirements of laser battery arrays with different powers; and an MPPT circuit board 55, whose input end is connected to the output end of the series-parallel board 54, dynamically adjusts the operating point to track and maintain the output power at the maximum point in real time, and its output end is connected to an external load. The series-parallel board 54 and the pluggable wiring slot 56 work together to achieve flexible configuration of circuit topology and, in combination with the MPPT circuit board, accurately track the maximum output power of the laser battery 31.

[0041] Furthermore, the specific working process of the laser battery testing device is as follows: remove the transparent protective layer 2 and irradiate all the high-power lasers onto the laser battery 31; then, start the external cooling device to allow the cooling medium to flow from the inlet manifold 41 into the microchannel 43, and form a laminar circulation through the outlet manifold 42 to dissipate heat for the laser battery 31; secondly, quickly switch the circuit topology through the pluggable wiring slot 56, and dynamically adjust the series-parallel connection mode of the laser battery 31 using the series-parallel board 54 to adapt to the current test requirements; finally, the MPPT circuit board 55 tracks the maximum output power point of the laser battery 31 in real time, dynamically adjusts the working point and maintains the output power at the maximum value.

[0042] In summary, based on the laser power of the high-power laser measured by the optical power meter of the laser power testing device and the maximum output power of the laser battery 31 tracked by the laser battery testing device, the photoelectric conversion efficiency of the laser battery 31, that is, the performance of the laser battery 31, can be obtained to complete the entire test.

[0043] In summary, the present invention provides a laser battery testing system, which solves the problem of high-power laser power measurement through the structural design of the laser light shield, utilizes the laminar flow path of the cooling heat sink to efficiently control the temperature and prevent the performance degradation of the laser battery. At the same time, the battery management system supports dynamic topology adjustment to achieve accurate maximum power testing, which has great practicality and broad application prospects.

[0044] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description is not intended to limit the present invention. After reading the above description, various modifications and substitutions of the present invention will become apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A laser battery testing system for measuring the photoelectric conversion efficiency of a laser battery under high-power laser irradiation conditions, characterized in that: It includes a laser power test device and a laser battery test device; the laser power test device includes: Laser light barrier; An optical power meter is provided on one side of the laser light shield; irradiating a high-power laser onto the laser light shielding plate, wherein a plurality of identical light-transmitting areas are provided on the laser light shielding plate, and the light-transmitting areas are evenly distributed to allow an optical power meter to measure an average optical power density of the high-power laser passing through the light-transmitting areas and calculate the laser power; The laser battery testing device comprises: a laser cell substrate on which the laser cell is arranged; A first adapter plate is provided at the upper and lower ends of the laser cell substrate and is electrically connected to the laser cell substrate; A cooling and heat dissipation plate is arranged in contact with the laser cell substrate; a battery management system, electrically connected to the first adapter board; The laser battery testing device is used to track the maximum output power of the laser battery; The photoelectric conversion efficiency of the laser cell is the ratio of the maximum output power of the laser cell to the laser power.

2. The laser battery testing system according to claim 1, wherein: The area of ​​the laser light shield is larger than the spot area of ​​the high-power laser.

3. The laser battery testing system according to claim 1, wherein: The laser cell substrate and the cooling and heat dissipation plate, as well as the cooling and heat dissipation plate and the battery management system are detachably connected by fasteners.

4. The laser battery testing system according to claim 1, wherein: The cooling plate comprises: Multiple microfluidic channels, equidistantly distributed in parallel; An inlet manifold is provided at one end of the cooling and heat dissipation plate, is communicated with one end of each microchannel, and is connected to the outlet end of an external cooling device; The outlet manifold is arranged at the other end of the cooling and heat dissipation plate, is communicated with the other end of each microchannel, and is connected to the inlet end of the external cooling device.

5. The laser battery testing system according to claim 4, characterized in that: The interior of the cooling and heat dissipation plate adopts a parallel flow channel layout, and the cooling medium in the cooling device flows from the inlet manifold through the microchannel to the outlet manifold, forming multiple laminar flow paths of unidirectional flow.

6. The laser battery testing system according to claim 5, characterized in that: The width of the microchannel is 100um to 400um.

7. The laser battery testing system according to claim 1, wherein: The battery management system includes: A welding plate having a matrix of welding notches on its surface for welding to the wires led out of the output end of the first adapter plate, with the welding notches in the same row interconnected via an embedded bus; A second adapter board, the input end of which is connected to the embedded bus and the output end of which is provided with a pluggable wiring slot; The series-parallel board is connected to the pluggable wiring slot and is used to dynamically adjust the circuit connection mode; the MPPT circuit board, whose input end is connected to the output end of the series-parallel board, dynamically adjusts the operating point to track and maintain the output power at the maximum point in real time.

8. The laser battery testing system according to claim 1, wherein: The laser battery testing device further includes a transparent protective layer, which is arranged on a side of the laser battery substrate away from the cooling and heat dissipation plate.

9. The laser battery testing system according to claim 8, characterized in that: The transparent protective layer is an acrylic plate.

10. The laser battery testing system according to claim 1, wherein: The laser light blocking plate is made of high temperature resistant material with a high temperature resistance greater than 200°C.

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