Voltage-adjustable battery packaging substrate assembly and laser receiving and converting device for laser fiber isolation power supply

Abstract

The invention discloses a voltage-adjustable battery packaging substrate assembly and a laser receiving and converting device for laser optical fiber isolation power supply, and relates to the technical field of laser wired power supply, and a voltage-adjustable battery packaging substrate and an adjustable optical fiber connector base are fixedly installed on an L-shaped optical base with a guide groove. The four laser battery pieces and the voltage-adjustable battery packaging substrate are connected in a bonding mode through different leads, so that output of the four laser battery pieces with the voltage being one time, two times and four times of the voltage of a single laser battery piece can be achieved. According to the laser receiving and converting device for laser fiber isolation power supply, high and low voltage adjustment can be realized through selection of a laser battery piece and a connection mode, and the problem of electromagnetic radiation interference caused by a buck-boost circuit is avoided; by adjusting the position, the power density and the laser-electric energy conversion efficiency of the laser receiving and converting device can be improved.

Description

Technical Field

[0001] This invention relates to the field of laser wired power supply technology, specifically to a voltage-adjustable battery packaging substrate assembly and a laser receiver and converter for laser fiber isolated power supply. Background Technology

[0002] Laser fiber optic isolated power supply technology is a novel energy transmission method. Its working principle involves using optical fibers to transmit the laser emitted by a laser to a laser receiving and conversion device located a certain distance away. The laser receiving and conversion device then converts the laser energy into electrical energy, which is used to power the load. It is unaffected by radio waves, electromagnetic interference, and power supply interference, and features lightweight, safety, and reliability, making it a novel power supply method for low-power sensing terminals.

[0003] Currently used laser receiver conversion devices typically connect a power conversion module with boost, buck, or buck-boost functions after the laser cell to achieve voltage conversion. However, the introduction of this power conversion module generates electromagnetic radiation. For many sensing terminals acquiring weak electromagnetic signals, the electromagnetic radiation from the power conversion module undoubtedly leads to a significant reduction in the accuracy of measurement results. Therefore, developing a laser receiver conversion module that can achieve voltage conversion without a power conversion module is of great significance for sensing terminals acquiring weak electromagnetic signals.

[0004] Currently used laser receiver-converters, such as CN202110482167.6, a laser power supply receiver device and system with watt-level output power, only design the laser power supply receiver and its circuitry. They do not specifically address the matching of the fiber optic output spot size with the photosensitive surface of the laser cell in the laser receiver-converter. The distance between the fiber optic output port and the photosensitive surface of the laser cell is fixed. When the spot size is larger than the photosensitive surface size, the overflow of the spot leads to a decrease in laser-to-electricity conversion efficiency. When the spot size is smaller than the photosensitive surface size, the excessively concentrated spot size causes temperature increases, and the excessively high local laser power density leads to a decrease in the open-circuit voltage and fill factor of the laser cell, also resulting in a decrease in laser-to-electricity conversion efficiency. Therefore, only fibers with specific core diameters and numerical apertures can be matched with this laser receiver-converter, lacking versatility for different types of fibers. Furthermore, the thickness of the laser cell, assembly precision, and processing tolerances can also cause fluctuations in the distance between the laser receiver-converter and the fiber end face, leading to a decrease in laser-to-electricity conversion efficiency. In addition, the heat dissipation effect of the receiver in laser fiber isolated power supply has a decisive impact on the output performance of laser cells. Existing laser fiber isolated power supply devices can often only achieve power output in the range of hundreds of milliwatts to W. Poor heat dissipation is a key factor limiting the improvement of output power. Summary of the Invention

[0005] The application provides a voltage-adjustable battery packaging substrate assembly and a laser receiving conversion device for laser fiber isolation power supply, and solves the problems of electromagnetic radiation, low optical matching degree, poor multi-type fiber adaptation, poor heat dissipation and single voltage mode of the laser photoelectric receiving device in the prior art.

[0006] In order to achieve the above-mentioned target, the technical scheme of the application is as follows: a voltage-adjustable battery packaging substrate assembly, comprising a voltage-adjustable battery packaging substrate and four laser battery pieces, the voltage-adjustable battery packaging substrate comprises an insulating bottom plate, a gold-plated positive electrode pad, a gold-plated negative electrode pad and four tinned lead alloy laser battery mounting areas arranged on the insulating bottom plate, the laser battery mounting areas are arranged at the center of the insulating bottom plate, the positive electrode pad surrounds three faces of the laser battery mounting areas on the outer side, the negative electrode pad surrounds the face opposite to the positive electrode and the other two adjacent faces of the laser battery mounting areas on the inner layer, and the length and width of the laser battery mounting areas are respectively 0.5-1.5 mm larger than those of the corresponding laser battery piece.

[0007] The upper surface metal electrode of the laser battery piece is L-shaped and covers two adjacent edges of the laser battery piece, the four laser battery pieces are mounted on the voltage-adjustable battery packaging substrate in a mode that the L-shaped upper surface metal electrodes correspond to the upper left corner, the upper right corner, the lower left corner and the lower right corner of the laser battery mounting areas respectively, and the laser battery piece and the laser battery mounting area are connected through a tinned lead alloy solder piece.

[0008] Further, the connection of the laser battery piece and the voltage-adjustable battery packaging substrate comprises:

[0009] A. all the four laser battery pieces are connected in parallel: the L-shaped upper surface metal electrodes of the four laser battery pieces are connected to the negative electrode pad of the voltage-adjustable battery packaging substrate through a gold wire bonding mode, and the laser battery mounting areas where the four laser battery pieces are arranged are connected to the positive electrode pad of the voltage-adjustable battery packaging substrate through a gold wire bonding mode; or

[0010] B. Two parallel and two series connection of four laser battery pieces: the L-shaped upper surface metal electrode of the left upper corner laser battery piece is connected with the negative electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding, the laser battery mounting area where the left upper corner laser battery piece is located is connected with the L-shaped upper surface metal electrode of the right upper corner battery by gold wire bonding, the laser battery mounting area where the right upper corner laser battery piece is located is connected with the positive electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding; the L-shaped upper surface metal electrode of the left lower corner laser battery piece is connected with the negative electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding, the laser battery mounting area where the left lower corner laser battery piece is located is connected with the L-shaped upper surface metal electrode of the right lower corner battery by gold wire bonding, the laser battery mounting area where the right lower corner laser battery piece is located is connected with the positive electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding; or

[0011] C. All series connection of four battery pieces: the L-shaped upper surface metal electrode of the left upper corner laser battery piece is connected with the negative electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding, the laser battery mounting area where the left upper corner laser battery piece is located is connected with the L-shaped upper surface metal electrode of the right upper corner battery by gold wire bonding, the laser battery mounting area where the right upper corner laser battery piece is located is connected with the L-shaped upper surface metal electrode of the right lower corner laser battery piece by gold wire bonding, the laser battery mounting area where the right lower corner laser battery piece is located is connected with the L-shaped upper surface metal electrode of the left lower corner laser battery piece by gold wire bonding, the laser battery mounting area where the left lower corner laser battery piece is located is connected with the positive electrode pad of the voltage adjustable battery packaging substrate by gold wire bonding.

[0012] A laser receiving and converting device for laser fiber isolation power supply, comprising a base, a fiber connector base plate arranged on the base, an incident fiber inserted on the fiber connector base plate, and a battery packaging substrate assembly, wherein the battery packaging substrate assembly adopts the voltage adjustable battery packaging substrate assembly, the base is an L-shaped optical base with a guide groove on the upper surface of the base plate, the vertical side plate of the guide groove L-shaped optical base is vertical, the fiber connector base plate is vertically fixed on the upper surface of the base plate of the L-shaped optical base through the guide groove and can slide along the guide groove, and the voltage adjustable battery packaging substrate is fixed on the vertical side plate of the L-shaped optical base.

[0013] Further, the material of the laser battery piece is Ga 0.5 In 0.5 P, GaAs, In 0.23 Ga 0.73 As.

[0014] Preferably, the material of the laser battery piece is GaAs.

[0015] Further, the laser cell piece comprises N vertically grown sub-cells, wherein N is any value in 1-10.

[0016] Preferably, the N is 2 or 6 or 9.

[0017] Further, the material of the insulating bottom plate is one of diamond, silicon carbide, silicon nitride, aluminum nitride and aluminum oxide.

[0018] Preferably, the material of the insulating bottom plate is aluminum nitride.

[0019] Further, the upper surface guide groove of the optical fiber connector base plate and the L-shaped optical base bottom plate is fastened by bolts.

[0020] The beneficial effects of the present application are as follows: by using the voltage adjustable cell packaging substrate assembly of the present application, 4 laser cell pieces can be connected by different wire bonding connection methods to realize 1 times, 2 times and 4 times output of the voltage of a single laser cell piece, and by selecting sub-cell junction numbers of 1, 3, 4, 5, 6 and 9, 14 voltage level outputs in the range of 1-36V can be realized, without the need to select a boost-buck module to realize voltage adjustment, which can greatly improve the accuracy of detection and sensing for a sensing node with weak electromagnetic signal sensing. By using the design method of the position adjustable optical fiber connector base and the L-shaped optical base with a guide groove in the present application, the spacing between the position adjustable optical fiber connector base and the voltage adjustable cell packaging substrate can be adjusted according to actual engineering needs, so as to realize the optimal matching of the fiber spot size and the laser cell piece, and maximize the power density of the laser receiving conversion device and the laser-electric energy conversion efficiency. By using the integrally formed L-shaped optical base with a guide groove in the present application, the heat dissipation capacity of the laser cell piece can be greatly increased, and the output power of the laser receiving conversion device can be greatly improved. Finally, the laser receiving conversion device of the present application can be compatible with laser emitting devices with different core diameters / digital apertures, ensuring high laser-electric energy conversion efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a substrate layout diagram of the voltage adjustable cell packaging substrate assembly of the present application.

[0022] Figure 2 It is a structure schematic diagram of the laser cell piece of the present application.

[0023] Figure 3 It is a structure schematic diagram of the laser receiving conversion device for laser fiber isolation power supply. DETAILED DESCRIPTION

[0024] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are merely intended to explain the present application and not to limit the present application.

[0025] In the description of the present application, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "two sides" and the like indicate the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the present application and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of 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.

[0027] As shown in Figure 1 The voltage-adjustable battery packaging substrate assembly of the present application includes a voltage-adjustable battery packaging substrate 1 and four laser battery pieces 15, the voltage-adjustable battery packaging substrate 1 includes an insulating bottom plate 10, a gold-plated positive electrode pad 11, a gold-plated negative electrode pad 12 and four tinned lead alloy laser battery mounting areas 13 arranged on the insulating bottom plate 10, the laser battery mounting areas 13 are arranged at the center of the insulating bottom plate 10, the positive electrode pad 11 surrounds three faces of the laser battery mounting areas 13 on the outer side, the negative electrode pad 12 surrounds the face opposite to the positive electrode and the other two adjacent faces of the laser battery mounting areas 13 on the inner layer, the length and width of the laser battery mounting areas 13 are respectively 0.5-1.5 mm more than those of the corresponding laser battery piece 15;

[0028] The upper surface metal electrode 16 of the laser battery piece 15 is L-shaped, covering two adjacent edges of the laser battery piece, the four laser battery pieces are mounted on the voltage-adjustable battery packaging substrate 1 in a manner that the L-shaped upper surface metal electrodes correspond to the upper left corner, the upper right corner, the lower left corner and the lower right corner of the laser battery mounting areas 13 respectively, and the laser battery piece 15 and the laser battery mounting areas 13 are connected through tinned lead alloy solder pieces.

[0029] The connection of the laser battery piece 15 and the voltage-adjustable battery packaging substrate 1 includes:

[0030] A. Four laser battery pieces are all connected in parallel: the L-shaped upper surface metal electrode of the four laser battery pieces is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding, and the laser battery mounting area where the four laser battery pieces are located is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding; or

[0031] B. Two parallel and two series connection of four laser battery pieces: the L-shaped upper surface metal electrode of the upper left corner laser battery piece is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding, the laser battery mounting area where the upper left corner laser battery piece is located is connected to the L-shaped upper surface metal electrode of the upper right corner battery through gold wire bonding, and the laser battery mounting area where the upper right corner laser battery piece is located is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding; the L-shaped upper surface metal electrode of the lower left corner laser battery piece is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding, the laser battery mounting area where the lower left corner laser battery piece is located is connected to the L-shaped upper surface metal electrode of the lower right corner battery through gold wire bonding, and the laser battery mounting area where the lower right corner laser battery piece is located is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding; or

[0032] C. Four batteries are all connected in series: the L-shaped upper surface metal electrode of the upper left corner laser battery piece is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding, the laser battery mounting area where the upper left corner laser battery piece is located is connected to the L-shaped upper surface metal electrode of the upper right corner battery through gold wire bonding, the laser battery mounting area where the upper right corner laser battery piece is located is connected to the L-shaped upper surface metal electrode of the lower right corner laser battery piece through gold wire bonding, the laser battery mounting area where the lower right corner laser battery piece is located is connected to the L-shaped upper surface metal electrode of the lower left corner laser battery piece through gold wire bonding, and the laser battery mounting area where the lower left corner laser battery is located is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate through gold wire bonding.

[0033] A laser receiving and converting device for laser fiber isolation power supply, comprising a base, a fiber connector base plate 2 arranged on the base, an incident optical fiber 4 inserted into the fiber connector base plate, and a battery packaging substrate assembly, wherein the battery packaging substrate assembly adopts the voltage-adjustable battery packaging substrate assembly described above, the base is an L-shaped optical base 3 with a guide groove 5 on the upper surface of the bottom plate, the guide groove 5 is perpendicular to the vertical side plate of the L-shaped optical base 3, the fiber connector base plate 2 is vertically fixed on the upper surface of the bottom plate of the L-shaped optical base 3 through the guide groove 5 and can slide along the guide groove 5, and the voltage-adjustable battery packaging substrate 1 is fixed on the vertical side plate of the L-shaped optical base 3.

[0034] The material of the laser cell piece 15 is Ga 0.5 In 0.5 P, GaAs, In 0.23 Ga 0.73 As.

[0035] Preferably, the material of the laser cell piece 15 is GaAs.

[0036] The laser cell piece 15 comprises N vertically grown sub-cells, wherein N is any value in 1-10.

[0037] Preferably, the N is 2 or 6 or 9.

[0038] The material of the insulating bottom plate 10 is one of diamond, silicon carbide, silicon nitride, aluminum nitride, and aluminum oxide.

[0039] Preferably, the material of the insulating bottom plate 10 is aluminum nitride.

[0040] The upper surface guide groove 5 of the fiber connector base plate 2 and the L-shaped optical base 3 bottom plate is fastened by bolts.

[0041] The laser receiving conversion device for laser fiber isolation power supply can realize the matching of the fiber output spot size and the laser cell piece size by adjusting the distance between the position-adjustable fiber connector base plate and the voltage-adjustable cell packaging substrate.

[0042] The guide groove L-shaped optical base is integrally formed, and the laser cell piece, the voltage-adjustable cell packaging substrate, and the guide groove L-shaped optical base are connected by welding.

[0043] The laser receiving conversion device for laser fiber isolation power supply can realize high and low voltage adjustment by selecting the connection mode of the laser cell piece and the voltage-adjustable cell packaging substrate.

[0044] The material of the adjustable fiber connector base plate and the guide groove L-shaped optical base is a common metal. Preferably, it is copper.

[0045] Example 1

[0046] A laser receiving conversion device for laser fiber isolation power supply comprises a copper material position-adjustable fiber connector base plate, an aluminum nitride material voltage-adjustable cell packaging substrate, four 9-junction GaAs laser cell pieces with a thickness of 0.365 mm and a size of 1 cm*1 cm, and a copper material adjustable stroke L-shaped optical base with a guide groove, with a distance of 10 mm-100 mm (fiber end face to laser cell piece surface).

[0047] Example 2

[0048] A laser fiber isolation power supply laser receiving conversion device contains a copper material position adjustable fiber connector base, an aluminum nitride material voltage adjustable battery packaging board, four 6-junction GaAs laser battery pieces with a thickness of 0.365 mm and a size of 1 cm*1 cm, and a copper material adjustable stroke of 10 mm-100 mm (fiber end face to laser battery piece surface distance) L-shaped optical base with guide slot.

[0049] In comparison case 1, a laser fiber isolation power supply laser receiving conversion device contains a copper material position adjustable fiber connector base, an aluminum nitride material ordinary two strings two parallel type battery packaging board, four 9-junction GaAs laser battery pieces with a thickness of 0.365 mm and a size of 1 cm*1 cm, and a copper material adjustable stroke of 10 mm-100 mm (fiber end face to laser battery piece surface distance) L-shaped optical base with guide slot integrally formed.

[0050] In comparison case 2, a laser fiber isolation power supply laser receiving conversion device contains a copper material position fixed fiber connector base, an aluminum nitride material voltage adjustable battery packaging board, four 6-junction GaAs laser battery pieces with a thickness of 0.365 mm and a size of 1 cm*1 cm, and a copper material L-shaped optical base, the distance from the fiber end face to the surface of the laser battery piece is a fixed value of 50 mm.

[0051] In comparison case 3, a laser fiber isolation power supply laser receiving conversion device contains a copper material position adjustable fiber connector base, an aluminum nitride material voltage adjustable battery packaging board, four 6-junction GaAs laser battery pieces with a thickness of 0.365 mm and a size of 1 cm*1 cm, and a copper material adjustable stroke of 5 mm-50 mm (fiber end face to laser battery piece surface distance) non-integrally formed L-shaped optical base with guide slot (L-shaped optical base is fastened by two copper blocks through threads).

[0052] The laser fiber isolation power supply light source uses a fiber with a fiber core diameter of 62.5 um and a numerical aperture value of 0.22, and the irradiation conditions are laser wavelength 808 nm and laser irradiation power 10 W. The test results of the examples and the comparison cases are shown in Table 1.

[0053] Table 1 Performance parameters of laser receiving conversion device

[0054]

[0055] The laser fiber isolation power supply light source uses a fiber with a fiber core diameter of 62.5 um and a numerical aperture value of 0.22, and the irradiation conditions are laser wavelength 808 nm and laser irradiation power 30 W. The test results of the examples and the comparison cases are shown in Table 2.

[0056] Table 2 Performance parameters of laser receiving conversion device

[0057]

[0058]

[0059] The laser fiber isolation power supply light source uses a fiber with a fiber core diameter of 100 um and a numerical aperture value of 0.37, and the irradiation condition is a laser wavelength of 808 nm and a laser irradiation power of 10 W. The test results of the embodiment and the comparative case are shown in Table 3 below.

[0060] Table 3 Performance parameters of laser receiving conversion device

[0061]

[0062] Based on the above comparison, it can be seen that when the laser receiving device does not use an integrally formed L-shaped optical base, the heat dissipation effect is obviously poor, resulting in a decrease in output power and efficiency; when the laser receiving device does not use a voltage-adjustable battery packaging substrate, the substrate can only output one voltage mode and cannot be adjusted; when the laser receiving device does not use an adjustable fiber connector base and a groove-equipped L-shaped optical base design, the adaptability of the laser receiving device to different core diameters and numerical aperture fibers is greatly reduced, and the output power and efficiency are greatly reduced. In summary, the present application can greatly improve the adaptability of the laser receiving conversion and the laser fiber isolation power supply emission module, thereby improving the output power and the laser-electric energy conversion efficiency.

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A voltage-adjustable battery packaging substrate assembly, comprising a voltage-adjustable battery packaging substrate (1) and four laser battery cells (15), characterized in that, The voltage-adjustable battery packaging substrate (1) includes an insulating base plate (10), gold-plated positive electrode pads (11), gold-plated negative electrode pads (12), and four tin-lead alloy-plated laser battery mounting areas (13) disposed on the insulating base plate (10). The laser battery mounting areas (13) are disposed in the center of the insulating base plate (10). The positive electrode pads (11) are located on the outer side and surround the three sides of the laser battery mounting areas (13). The negative electrode pads (12) are located on the inner side and surround the side of the laser battery mounting areas (13) opposite to the positive electrode and the other two adjacent sides. The length and width of the laser battery mounting areas (13) are 0.5 to 1.5 mm longer than the corresponding laser battery cells (15). The upper surface metal electrode (16) of the laser battery cell (15) is L-shaped, covering two adjacent sides of the laser battery cell. The four laser battery cells are mounted on the voltage adjustable battery packaging substrate (1) with the L-shaped upper surface metal electrodes corresponding to the upper left, upper right, lower left and lower right corners of the laser battery mounting area (13). The laser battery cell (15) and the laser battery mounting area (13) are connected by tin-lead alloy solder joints.

2. The voltage-adjustable battery packaging substrate assembly according to claim 1, characterized in that, The connection between the laser battery cell (15) and the voltage-adjustable battery packaging substrate (1) includes: A. All four laser-mounted solar cells are connected in parallel: The metal electrodes on the L-shaped upper surface of the four laser-mounted solar cells are connected to the negative electrode pads of the voltage-adjustable battery packaging substrate via gold wire bonding. The laser-mounted area where the four laser cells are located is connected to the positive electrode pads of the voltage-adjustable battery packaging substrate via gold wire bonding; or B. Four laser-mounted solar cells are connected in two parallel and two series configurations: The L-shaped upper surface metal electrode of the upper left laser-mounted solar cell is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding; the laser cell mounting area of ​​the upper left laser-mounted solar cell is connected to the L-shaped upper surface metal electrode of the upper right solar cell via gold wire bonding; the laser cell mounting area of ​​the upper right laser-mounted solar cell is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding. The L-shaped upper surface metal electrode of the lower left laser-mounted solar cell is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding; the laser cell mounting area of ​​the lower left laser-mounted solar cell is connected to the L-shaped upper surface metal electrode of the lower right solar cell via gold wire bonding; the laser cell mounting area of ​​the lower right laser-mounted solar cell is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding. Or C. All four cells are connected in series: The L-shaped upper surface metal electrode of the upper left laser cell is connected to the negative electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding. The laser cell mounting area of ​​the upper left laser cell is connected to the L-shaped upper surface metal electrode of the upper right cell via gold wire bonding. The laser cell mounting area of ​​the upper right laser cell is connected to the L-shaped upper surface metal electrode of the lower right laser cell via gold wire bonding. The laser cell mounting area of ​​the lower right laser cell is connected to the L-shaped upper surface metal electrode of the lower left laser cell via gold wire bonding. The laser cell mounting area of ​​the lower left laser cell is connected to the positive electrode pad of the voltage-adjustable battery packaging substrate via gold wire bonding.

3. A laser receiver and converter for laser fiber isolated power supply, comprising a base, a fiber optic connector base plate (2) disposed on the base, an incident fiber (4) inserted into the fiber optic connector base plate, and a battery encapsulation substrate assembly, characterized in that, The battery packaging substrate assembly adopts the voltage-adjustable battery packaging substrate assembly as described in claim 1 or 2. The base is an L-shaped optical base (3) with a guide groove (5) on the upper surface of the base plate. The guide groove (5) is perpendicular to the vertical side plate of the L-shaped optical base (3). The fiber optic connector base plate (2) is vertically fixed to the upper surface of the base plate of the L-shaped optical base (3) through the guide groove (5) and can slide along the guide groove (5). The voltage-adjustable battery packaging substrate (1) is fixed on the vertical side plate of the L-shaped optical base (3).

4. The laser receiver and converter for fiber-optic isolated power supply according to claim 3, characterized in that, The laser cell (15) is made of Ga. 0.5 In 0.5 P, GaAs, In 0.23 Ga 0.73 One of the As.

5. The laser receiver and converter for fiber-optic isolated power supply according to claim 4, characterized in that, The laser cell (15) is made of GaAs.

6. The laser receiver and converter for fiber-optic isolated power supply according to claim 3, characterized in that, The laser cell (15) comprises N vertically grown sub-cells, where N is any value from 1 to 10.

7. The laser receiver and converter for fiber-optic isolated power supply according to claim 6, characterized in that, The N is 2, 6, or 9.

8. The laser receiver and converter for fiber-optic isolated power supply according to claim 3, characterized in that, The insulating base plate (10) is made of one of the following materials: diamond, silicon carbide, silicon nitride, aluminum nitride, and aluminum oxide.

9. The laser receiver and converter for fiber-optic isolated power supply according to claim 8, characterized in that, The insulating base plate (10) is made of aluminum nitride.

10. The laser receiver and converter for fiber-optic isolated power supply according to claim 3, characterized in that, The upper surface guide grooves (5) of the fiber optic connector base plate (2) and the L-shaped optical base plate (3) are fastened by bolts.

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