Dynamic variable structure battery system for non-uniform light distribution

Abstract

The invention relates to a dynamic variable structure battery system for non-uniform light distribution. The dynamic variable structure battery system comprises a plurality of photoelectric conversion units and a control unit which are electrically connected, the plurality of photoelectric conversion units are tightly connected to form a battery array; the control unit is used for acquiring the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units in real time, performing operation processing on the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units to obtain an adjustment threshold value, comparing the photoelectric conversion rate corresponding to each of the plurality of photoelectric conversion units with the adjustment threshold value to obtain a plurality of comparison results, and outputting the plurality of comparison results. According to the comparison result, a control instruction is generated, the control instruction is used for changing the inclination angles of the battery pieces of the multiple photoelectric conversion units, and then electric energy distribution among the multiple photoelectric conversion units is adjusted. Based on the dynamic variable structure battery system provided by the invention, the problem of non-uniform light distribution on a battery array in a space solar power station can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of space solar power stations, and in particular relates to a dynamic variable structure battery system for non-uniform light distribution. Background Art

[0002] Space solar energy is an important way to achieve sustainable energy development in the future. In order to make better use of space solar energy, space solar power stations were proposed in 1968. The existing space solar power station solutions can be divided into non-concentrating solutions and concentrating solutions according to the way of collecting solar energy. The concentrating solution is complex in design but has the advantages of low cost, high power-to-mass ratio and simple power management. The design quality of the concentrating system's concentrating performance is mainly determined by the light energy collection rate and light distribution uniformity of the concentrating system. A high light energy collection rate means a higher total energy collection efficiency. The uniformity of light distribution affects the power generation of the overall concentrating system.

[0003] The most important design goals of the concentrating system of a space solar power station are high power-to-mass ratio and low cost. The use of thin-film structures will greatly reduce the mass and cost of the structure. However, the stiffness and mass of thin-film structures cannot be achieved at the same time. The reflective surface of a lightweight thin-film structure will have a large deformation error, and the deformation error will make the light distribution uniformity worse, which will greatly affect the power generation of the photovoltaic cell array, making the series and parallel design of the cell array difficult and reducing the efficiency. In addition, uneven illumination will also make heat dissipation design difficult, and uneven heat problems will be aggravated, further exacerbating the problem of low cell efficiency and power generation.

[0004] Existing solutions generally improve the light distribution uniformity of the focusing system from the perspective of circuit improvement, but circuit improvement usually has great production difficulties and high costs. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a dynamic variable structure battery system for non-uniform light distribution. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] The present invention provides a dynamic variable structure battery system for non-uniform light distribution, comprising: a control unit, and a plurality of photoelectric conversion units electrically connected to the control unit; the plurality of photoelectric conversion units form a battery array; the control unit is used to obtain the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units in real time, perform calculation processing on the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units to obtain an adjustment threshold, compare the photoelectric conversion rate corresponding to each of the plurality of photoelectric conversion units with the adjustment threshold to obtain a plurality of comparison results, and generate a control instruction according to the comparison results, the control instruction is used to change the inclination angle of the battery cells of the plurality of photoelectric conversion units, thereby adjusting the electric energy distribution between the plurality of photoelectric conversion units.

[0007] In some embodiments, the comparison result includes: the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is greater than the adjustment threshold, and the photoelectric conversion rate corresponding to the jth photoelectric conversion unit is less than or equal to the adjustment threshold; j is a positive integer greater than or equal to 1; the control instruction is used to generate a first control instruction to reduce the inclination angle of the battery cell of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is greater than the adjustment threshold; and to generate a second control instruction to increase the inclination angle of the battery cell of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is less than or equal to the adjustment threshold.

[0008] In some embodiments, each of the multiple photoelectric conversion units includes a battery cell; each of the multiple photoelectric conversion units also includes: a base, a supporting subunit and an adjusting subunit; the adjusting subunit is electrically connected to the control unit; one end of the supporting subunit is fixedly disposed on the base, and the other end is movably connected to the battery cell; the adjusting subunit is respectively connected to the battery cell and the supporting subunit, and is used to adjust the tilt angle between the battery cell and the supporting subunit in response to the control instruction.

[0009] In some embodiments, the adjustment subunit is a memory alloy adjustment bar, which is fixedly connected to the battery cell and the supporting subunit respectively, and is used to deform and contract in response to the first control instruction to pull the battery cell closer to the supporting subunit, and to recover in response to the second control instruction to push the battery cell away from the supporting subunit.

[0010] In some embodiments, the adjustment subunit includes: a support rod, a reduction motor and a slider; the reduction motor is electrically connected to the control unit; the slider is movably arranged on the support subunit, one end of the support rod is connected to the reduction motor, and the other end passes through a through hole on the slider and is fixedly connected to the battery cell; in response to the first control instruction, the reduction motor drives the support rod to rotate inward in the through hole to push the battery cell away from the support subunit and increase the inclination angle between the battery cell and the support subunit; in response to the second control instruction, the reduction motor drives the support rod to rotate out of the through hole to pull the battery cell close to the support subunit and reduce the inclination angle between the battery cell and the support subunit.

[0011] In some embodiments, each of the plurality of photoelectric conversion units further comprises: a plurality of stoppers; the plurality of stoppers are evenly arranged at positions where the battery cells are movably connected to the stoppers.

[0012] In some embodiments, the cell is a bifacial cell; each of the plurality of photoelectric conversion units further comprises: a reflection subunit, disposed on the base, for reflecting solar energy to the back side of the bifacial cell.

[0013] In some embodiments, the reflection subunit includes: a support column and a reflector; the support column is arranged on the base, one side of the reflector is arranged on the base, and the other side of the reflector rests on the support column to form a preset angle with the base.

[0014] In some embodiments, the supporting subunit is a transparent supporting rod.

[0015] In some embodiments, the system further comprises a focusing reflection unit for providing focused solar light to the battery array.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] With regard to existing solutions, the uniformity of light distribution of a focusing system is generally improved from the perspective of circuit improvement. However, circuit improvement usually has the problems of great production difficulty and high cost. The present invention provides a dynamic variable structure battery system for non-uniform light distribution. The control unit in the system obtains the photoelectric conversion rate of each photoelectric conversion unit in the battery array in real time, and obtains an adjustment threshold value according to the overall photoelectric conversion rate. By comparing the photoelectric conversion rate of each photoelectric conversion unit with the adjustment threshold value one by one, a corresponding control instruction is generated. Without improving the system circuit structure, the energy between multiple photoelectric conversion units in the battery array can be balanced, the working efficiency of the series-parallel circuits in the system can be improved, and the heat dissipation difficulty caused by the uneven light distribution can be effectively reduced, thereby effectively improving the battery working efficiency and the power generation efficiency, and the system has a high degree of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural block diagram of a dynamic variable structure battery system for non-uniform light distribution provided by an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of multiple photoelectric conversion units provided by an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of an inclined solar cell reflecting solar light toward another solar cell provided by an embodiment of the present invention;

[0021] Figure 4 This is an example diagram of dynamic adjustment of a dynamic variable structure battery system for non-uniform light distribution provided by an embodiment of the present invention.

[0022] Reference numerals:

[0023] 101. Focusing and reflecting unit; 102. Battery array; 103. Support subunit; 104. Base; 105. Reflector; 106. Battery cell; 107. Adjustment subunit; 108. Support column. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0025] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0027] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0028] The dynamic variable structure battery system for non-uniform light distribution proposed by the present invention is now described in detail with reference to the accompanying drawings. Figure 1is a structural block diagram of a dynamic variable structure battery system for non-uniform light distribution provided by an embodiment of the present invention. Figure 1 As shown, the system includes: a control unit, and a plurality of photoelectric conversion units electrically connected to the control unit; the plurality of photoelectric conversion units form a battery array; the control unit is used to obtain the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units in real time, perform calculation processing on the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units to obtain an adjustment threshold, compare the photoelectric conversion rate corresponding to each of the plurality of photoelectric conversion units with the adjustment threshold to obtain a plurality of comparison results, and generate control instructions according to the comparison results, the control instructions are used to change the inclination angles of the battery cells of the plurality of photoelectric conversion units, thereby adjusting the electric energy distribution between the plurality of photoelectric conversion units.

[0029] In a possible application scenario, the dynamic variable structure battery system for non-uniform light distribution provided by an embodiment of the present invention is applied to a space solar power station.

[0030] It should be noted that the plurality of photoelectric conversion units can be arranged according to actual needs, and the present invention does not limit the specific shape of the battery array.

[0031] Here, the comparison result between the photoelectric conversion rate corresponding to each photoelectric conversion unit in the multiple photoelectric conversion units and the adjustment threshold includes: the photoelectric conversion rate corresponding to the jth photoelectric conversion unit in the multiple photoelectric conversion units is greater than the adjustment threshold, and the photoelectric conversion rate corresponding to the jth photoelectric conversion unit is less than or equal to the adjustment threshold; j is a positive integer greater than or equal to 1; a control instruction is used to generate a first control instruction to reduce the inclination angle of the battery cells of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit in the multiple photoelectric conversion units is greater than the adjustment threshold; and to generate a second control instruction to increase the inclination angle of the battery cells of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit in the multiple photoelectric conversion units is less than or equal to the adjustment threshold.

[0032] The structure of each unit included in the system is now combined, and the use of control instructions is explained in detail. Figure 2 1 is a schematic diagram of the structure of multiple photoelectric conversion units provided by an embodiment of the present invention. The multiple photoelectric conversion units form a battery array 102. Figure 2As shown, the base 104 of one photoelectric conversion unit is fixed at a preset position, and the base 104 of another photoelectric conversion unit is arranged at intervals on one side of the base 104 of the photoelectric conversion unit; by sequentially arranging the bases 104, a battery array 102 is formed. It should be noted that the base 104 is rectangular, so other bases 104 can be arranged on the four sides of the base 104. Here, the interval between adjacent bases 104 is very small, almost zero. Each of the multiple photoelectric conversion units includes a battery cell 106; each of the multiple photoelectric conversion units also includes: a base 104, a supporting subunit 103 and an adjusting subunit 107; the adjusting subunit 107 is electrically connected to the control unit; one end of the supporting subunit 103 is fixedly arranged on the base 104, and the other end is movably connected to the battery cell 106; the adjusting subunit 107 is respectively connected to the battery cell 106 and the supporting subunit 103, and is used to respond to the control instruction and adjust the tilt angle between the battery cell 106 and the supporting subunit 103.

[0033] Here, the system also includes a focusing reflection unit 101, which is used to provide focused solar energy light to the battery array 102. The focusing reflection unit 101 is connected to one end of the battery array 102. In addition, according to actual needs, the structure of the focusing reflection unit 101 can be a spherical reflection surface, a parabolic reflection surface, or a reflection surface formed by splicing planes.

[0034] In one possible implementation, the adjustment subunit 107 is a memory alloy adjustment bar, which is fixedly connected to the battery cell 106 and the support subunit 103 respectively, and is used to deform and contract in response to a first control instruction to pull the battery cell 106 close to the support subunit 103, and to recover in response to a second control instruction to push the battery cell 106 away from the support subunit 103.

[0035] In a possible implementation, the supporting subunit 103 is a transparent supporting rod. This design may not affect the incident light.

[0036] Here, the memory alloy adjustment bar maintains the tilt angle between the battery cell 106 and the supporting subunit 103 at 90°. A temperature controller is also provided on the adjustment subunit 107, and the memory alloy adjustment bar is closely connected to the temperature controller; when the control unit generates a first control instruction (at this time, the first control instruction refers to an instruction to reduce the temperature on the memory alloy adjustment bar to a first preset temperature), the temperature controller responds to the first control instruction and reduces the temperature of the memory alloy adjustment bar, so that the memory alloy adjustment bar shrinks and deforms, so that the tilt angle between the battery cell 106 and the supporting subunit 103 is less than 90°. When the control unit generates a second control instruction (at this time, the second control instruction refers to an instruction to increase the temperature on the memory alloy adjustment bar to a second preset temperature, and the second preset temperature is greater than the first preset temperature), the temperature controller responds to the second control instruction and increases the temperature of the memory alloy adjustment bar to restore the original shape.

[0037] Exemplarily, the material of the shape memory alloy adjustment strip is a titanium-nickel-palladium high-temperature shape memory alloy.

[0038] In another possible implementation, the adjustment subunit includes: a support rod, a reduction motor and a slider (not shown in the figure). The reduction motor is electrically connected to the control unit; the slider is movably arranged on the support subunit, one end of the support rod is connected to the reduction motor, and the other end passes through the through hole on the slider and is fixedly connected to the battery cell; in response to the first control instruction, the reduction motor drives the support rod to rotate inward in the through hole to push the battery cell away from the support subunit and increase the tilt angle between the battery cell and the support subunit; in response to the second control instruction, the reduction motor drives the support rod to rotate out in the through hole to pull the battery cell close to the support subunit and reduce the tilt angle between the battery cell and the support subunit.

[0039] Here, the support rod maintains the tilt angle between the battery sheet 106 and the supporting subunit 103 at 90°. In addition, the support rod is a light rod, and the reduction motor is a light motor.

[0040] It should be noted that, in order to prevent the memory alloy adjustment bar or the support rod from overturning the battery cell 106, each of the multiple photoelectric conversion units also includes: multiple limiters (not shown in the figure); the multiple limiters are evenly arranged at the position where the battery cell and the limiter are movably connected.

[0041] Please continue to refer to Figure 2 Here, the cell 106 is a double-sided cell; each of the plurality of photoelectric conversion units further includes: a reflection subunit, disposed on the base 104, for reflecting solar light to the back of the double-sided cell.

[0042] Please continue to refer to Figure 2The reflector subunit includes: a support column 108 and a reflector 105; the support column 108 is disposed on the base 104, one side of the reflector 105 is disposed on the base 104, and the other side of the reflector 105 rests on the support column 108 to form a preset angle with the base 104. Figure 2 , the support column 108 is arranged at the center of the base 104, and the height of the support column 108 is less than the support subunit 103, and when the battery cell 106 tilts downward to a certain angle, it will rest on the reflector 105. In other words, the sum of the angle between the battery cell 106 and the support subunit 103 and the angle between the reflector 105 and the base 104 is 90°. The larger the angle between the reflector 105 and the base 104, the smaller the angle between the battery cell 106 and the support subunit 103, and the smaller the downward tilt of the battery cell 106.

[0043] Figure 3 FIG. 1 is a schematic diagram of an inclined solar cell reflecting solar light to another solar cell provided by an embodiment of the present invention. Figure 3 As shown, the left cell is tilted downward to reflect the solar fiber to the right cell. m refers to the projection distance of the reflector 105 on the base 104, θ m It refers to the preset angle between the reflector 105 and the base 104, D p Refers to the width of the battery cell 106, D s It refers to the distance between the starting point of the reflected energy area and the edge of the battery cell 106, D f It refers to the width of the energy region obtained by reflection, and α refers to the incident angle of the solar energy light received by the battery array 102 after the solar energy light is reflected from the concentrator reflection unit 101 to the battery array 102 .

[0044] Here, the height h of the cell 106 can determine the preset angle between the reflector 105 and the base 104. To ensure that the light energy reflected by the reflector 105 can be fully reflected to the cell of another photoelectric conversion unit, the height h of the cell 106 needs to satisfy: h≥D m (tanθ m -tan2θ m ).

[0045] In a possible implementation, the value of the preset angle between the reflector 105 and the base 104 is determined by the light energy distribution value, and is generally within the range of 30° to 45°. The reflector 105 is a flat reflective surface, and can also be designed as a curved reflective surface as required. Its reflectivity to solar energy is generally required to be higher than 93%.

[0046] By tilting the photoelectric conversion unit corresponding to a high photoelectric conversion rate, the incident solar light on it can be reduced, thereby reducing the photoelectric conversion rate of the photoelectric conversion unit. And by reflecting the solar light to the back of the double-sided battery cell by the reflective subunit, the light energy of the photoelectric conversion unit corresponding to the low photoelectric conversion rate can be increased, thereby improving the photoelectric conversion rate of the photoelectric conversion unit. In other words, by tilting to reduce part of the excessively high photoelectric conversion rate and by reflecting to increase part of the excessively low photoelectric conversion rate, this method can evenly distribute the light on the battery array, thereby adjusting the electrical energy distribution between multiple photoelectric conversion units, so that the electrical energy distribution between multiple photoelectric conversion units is as similar as possible.

[0047] Here, the amount of electric energy transferred from the jth photoelectric conversion unit to the j+1th photoelectric conversion unit can be expressed as:

[0048]

[0049] Among them, I f It refers to the amount of electrical energy transferred from the jth photoelectric conversion unit to the j+1th photoelectric conversion unit. refers to the electrical energy of the jth photoelectric conversion unit, D m It refers to the projection distance of the reflector 105 on the base 104, D p refers to the width of the battery cell 106, θ m It refers to the preset angle between the reflector 105 and the base 104 .

[0050] Exemplarily, photoelectric conversion unit 1, photoelectric conversion unit 2 and photoelectric conversion unit 3 form a battery array 102, and the control unit obtains the photoelectric conversion rate corresponding to each photoelectric conversion unit in real time; wherein, the photoelectric conversion rate corresponding to photoelectric conversion unit 1 is 15%, the photoelectric conversion rate corresponding to photoelectric conversion unit 2 is 25%, and the photoelectric conversion rate corresponding to photoelectric conversion unit 3 is 8%, and the control unit calculates the average value of the three photoelectric conversion rates to obtain an adjustment threshold of 16%; wherein, the photoelectric conversion rate corresponding to photoelectric conversion unit 3 is significantly smaller than the adjustment threshold, and the photoelectric conversion rate corresponding to photoelectric conversion unit 2 is greater than the adjustment threshold; the control unit generates a first control instruction to control the battery cell on the photoelectric conversion unit 2 to tilt downward to reflect solar energy to the back of the battery cell of the photoelectric conversion unit 3 to increase the photoelectric conversion rate of the photoelectric conversion unit 3, and since the area of ​​the battery cell of the photoelectric conversion unit 2 that obtains solar energy becomes smaller, the photoelectric conversion rate of the photoelectric conversion unit 2 decreases, and the control unit continuously adjusts the tilt angle of the battery cell of the photoelectric conversion unit 2 until the photoelectric conversion rates corresponding to the three photoelectric conversion units are substantially the same, and then stops adjusting. It should be noted that, since the photoelectric conversion rate corresponding to the photoelectric conversion unit 1 is close to the adjustment threshold, the adjustment range of the cell on the photoelectric conversion unit 1 is smaller than the adjustment range of the cell of the photoelectric conversion unit 2. The adjustment ranges corresponding to the cells of each photoelectric conversion unit may be the same or different.

[0051] It should be understood that the present invention does not limit the specific method of obtaining the adjustment threshold. For example, the adjustment threshold may be obtained using other algorithms, or the adjustment threshold may be set in advance.

[0052] Figure 4 FIG. 1 is an example diagram of dynamic adjustment of a dynamic variable structure battery system for non-uniform light distribution provided by an embodiment of the present invention. Figure 4 As shown, on the XOZ plane coordinate system, the focusing reflection unit 101 is connected to the bottom of the battery array 102, and the focusing reflection unit 101 focuses and reflects the sunlight onto the battery array 102, and the battery array 102 is composed of a plurality of photoelectric conversion units; in the initial state, the battery cell 106 in each photoelectric conversion unit is perpendicular to the supporting subunit 103, and the control unit obtains the photoelectric conversion rate corresponding to each photoelectric conversion unit in real time, and obtains the current adjustment threshold value based on the photoelectric conversion rates corresponding to the plurality of photoelectric conversion units; the photoelectric conversion rate corresponding to each photoelectric conversion unit is compared with the adjustment threshold value; and according to the comparison result, the battery cells of the photoelectric conversion units greater than the adjustment threshold value are tilted downward, and the tilt angles of the battery cells of the plurality of photoelectric conversion units are continuously adjusted to avoid the deviation of the incident angle of the solar energy light, resulting in the situation that the photoelectric conversion rates of some photoelectric conversion units are high and the photoelectric conversion rates of some photoelectric conversion units are low, so as to ensure that the overall photoelectric conversion rates are similar.

[0053] With regard to existing solutions, the uniformity of light distribution of a focusing system is generally improved from the perspective of circuit improvement. However, circuit improvement usually has the problems of great production difficulty and high cost. The present invention provides a dynamic variable structure battery system for non-uniform light distribution. The control unit in the system obtains the photoelectric conversion rate of each photoelectric conversion unit in the battery array in real time, and obtains an adjustment threshold value according to the overall photoelectric conversion rate. By comparing the photoelectric conversion rate of each photoelectric conversion unit with the adjustment threshold value one by one, a corresponding control instruction is generated. Without improving the system circuit structure, the energy between multiple photoelectric conversion units in the battery array can be balanced, the working efficiency of the series-parallel circuits in the system can be improved, and the heat dissipation difficulty caused by the uneven light distribution can be effectively reduced, thereby effectively improving the battery working efficiency and the power generation efficiency, and the system has a high degree of intelligence.

[0054] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A dynamic variable structure battery system for non-uniform light distribution, characterized in that: The system comprises: a control unit, and a plurality of photoelectric conversion units electrically connected to the control unit; the plurality of photoelectric conversion units constitute a battery array; The control unit is used to obtain the photoelectric conversion rates corresponding to the multiple photoelectric conversion units in real time, perform calculations on the photoelectric conversion rates corresponding to the multiple photoelectric conversion units to obtain an adjustment threshold, compare the photoelectric conversion rate corresponding to each of the multiple photoelectric conversion units with the adjustment threshold to obtain multiple comparison results, and generate control instructions based on the comparison results. The control instructions are used to change the inclination angles of the battery cells of the multiple photoelectric conversion units, thereby adjusting the electric energy distribution between the multiple photoelectric conversion units.

2. The dynamic variable structure battery system for non-uniform light distribution according to claim 1, characterized in that: The comparison result includes: the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is greater than the adjustment threshold, and the photoelectric conversion rate corresponding to the jth photoelectric conversion unit is less than or equal to the adjustment threshold; j is a positive integer greater than or equal to 1; The control instruction is used to generate a first control instruction for reducing the inclination angle of the battery cell of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is greater than the adjustment threshold; and to generate a second control instruction for increasing the inclination angle of the battery cell of the multiple photoelectric conversion units when the photoelectric conversion rate corresponding to the jth photoelectric conversion unit among the multiple photoelectric conversion units is less than or equal to the adjustment threshold.

3. The dynamic variable structure battery system for non-uniform light distribution according to claim 2, characterized in that: Each of the plurality of photoelectric conversion units comprises a cell; each of the plurality of photoelectric conversion units further comprises: a base, a supporting subunit and an adjusting subunit; the adjusting subunit is electrically connected to the control unit; One end of the supporting subunit is fixedly arranged on the base, and the other end is movably connected to the battery cell; The adjusting subunit is connected to the battery cell and the supporting subunit respectively, and is used to adjust the tilt angle between the battery cell and the supporting subunit in response to the control instruction.

4. The dynamic variable structure battery system for non-uniform light distribution according to claim 3, characterized in that: The adjustment subunit is a memory alloy adjustment bar, which is fixedly connected to the battery cell and the supporting subunit respectively, and is used to deform and contract in response to the first control instruction to pull the battery cell closer to the supporting subunit, and to recover in response to the second control instruction to push the battery cell away from the supporting subunit.

5. The dynamic variable structure battery system for non-uniform light distribution according to claim 3, characterized in that: The adjusting subunit comprises: a support rod, a reduction motor and a slider; the reduction motor is electrically connected to the control unit; The slider is movably arranged on the supporting subunit, one end of the supporting rod is connected to the reduction motor, and the other end passes through the through hole on the slider and is fixedly connected to the battery sheet; In response to the first control instruction, the reduction motor drives the support rod to rotate in the through hole to push the battery sheet away from the support subunit and increase the tilt angle between the battery sheet and the support subunit; In response to the second control instruction, the reduction motor drives the support rod to rotate out of the through hole to pull the battery sheet closer to the support subunit, thereby reducing the tilt angle between the battery sheet and the support subunit.

6. The dynamic variable structure battery system for non-uniform light distribution according to claim 3, characterized in that: Each of the plurality of photoelectric conversion units further comprises: a plurality of stoppers; The plurality of stoppers are evenly arranged at positions where the battery cells are movably connected to the stoppers.

7. The dynamic variable structure battery system for non-uniform light distribution according to claim 3, characterized in that: The cell is a double-sided cell; each of the plurality of photoelectric conversion units further comprises: a reflection subunit, which is arranged on the base and is used to reflect solar energy to the back side of the double-sided cell.

8. The dynamic variable structure battery system for non-uniform light distribution according to claim 7, characterized in that: The reflector subunit comprises: a support column and a reflector; the support column is arranged on the base, one side of the reflector is arranged on the base, and the other side of the reflector rests on the support column to form a preset angle with the base.

9. The dynamic variable structure battery system for non-uniform light distribution according to claim 3, characterized in that: The supporting subunit is a transparent supporting rod.

10. The dynamic variable structure battery system for non-uniform light distribution according to claim 1, characterized in that: The system also includes a concentrating reflection unit for providing focused solar light to the battery array.

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