CN114613669A - Method and device for repairing battery - Google Patents
Method and device for repairing battery Download PDFInfo
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- CN114613669A CN114613669A CN202210209640.8A CN202210209640A CN114613669A CN 114613669 A CN114613669 A CN 114613669A CN 202210209640 A CN202210209640 A CN 202210209640A CN 114613669 A CN114613669 A CN 114613669A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 155
- 239000007924 injection Substances 0.000 claims abstract description 155
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 230000001678 irradiating effect Effects 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
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- 238000005286 illumination Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 230000008439 repair process Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000002161 passivation Methods 0.000 description 7
- XGCTUKUCGUNZDN-UHFFFAOYSA-N [B].O=O Chemical compound [B].O=O XGCTUKUCGUNZDN-UHFFFAOYSA-N 0.000 description 6
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/326—Application of electric currents or fields, e.g. for electroforming
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a method and a device for repairing a battery, which provides a battery to be repaired; placing the battery to be repaired on the upper surface of an electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly; placing a light injection assembly on one side, close to the upper surface, of the electric injection assembly, and irradiating the battery to be repaired with first light rays by using the light injection assembly; placing a heat injection assembly at one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly; wherein the light intensity of the first light is 2.838 × 1027CD‑9×2.838×1027The first heating temperature of the CD is 100-200 DEG C. Meanwhile, a first current is input into the battery to be repaired, a first light ray is irradiated, and a first heating temperature is applied, so that the performance of the battery to be repaired is improved.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a method and a device for repairing a cell.
Background
With the rapid development of society and science and technology, the consumption of fossil energy by human beings is increasing day by day, and the energy crisis is a serious problem facing the world due to the limited reserves of the fossil energy. Solar energy is used as clean energy with unlimited reserve, free use and no generation of pollutants such as wastewater, waste residues and the like in the using process, and the shortage of energy can be effectively solved by developing and utilizing the solar energy.
However, after the solar photovoltaic module operates for many years, the battery of the solar photovoltaic module has the phenomenon of overlarge power attenuation, which affects the performance of the battery.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for repairing a battery, which simultaneously input a first current to the battery to be repaired, irradiate a first light, and apply a first heating temperature, so as to improve the performance of the battery to be repaired.
The invention provides a method for repairing a battery, which comprises the following steps:
providing a battery to be repaired;
placing the battery to be repaired on the upper surface of an electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly;
placing a light injection assembly on one side, close to the upper surface, of the electric injection assembly, and irradiating the battery to be repaired with first light rays by using the light injection assembly;
placing a heat injection assembly at one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly;
wherein the light intensity of the first light is 2.838 × 1027CD-9×2.838×1027CD, wherein the first heating temperature is 100-200 ℃.
Preferably, the wavelength of the first light is 550nm to 650 nm.
Preferably, the first current is a current of 5A-15A.
Preferably, the light injection treatment is performed for a first time length on the battery to be repaired, the first light ray is irradiated on the battery to be repaired for the first time length, and the first heating temperature is applied on the battery to be repaired for the first time length;
wherein the first time period is 30-60 min.
Based on the same invention idea, the invention also provides a device for repairing the battery, which comprises a light injection assembly, an electric injection assembly and a heat injection assembly;
the electric injection assembly comprises an upper surface and a lower surface which are oppositely arranged, the upper surface comprises at least one placing area, the placing area is used for storing a battery to be repaired, and the electric injection assembly provides a first current for inputting to the battery to be repaired;
the light injection assembly is positioned on one side of the upper surface, which is far away from the lower surface, and provides first light rays for irradiating the battery to be repaired;
the heat injection assembly is located on one side of the lower surface, which is far away from the upper surface, and provides a first heating temperature for applying to the battery to be repaired.
Preferably, the electrical injection assembly further comprises a voltage source, a diode and a filter, the voltage source providing an alternating current signal;
the voltage source, the diode, the filter and the battery to be repaired are electrically connected in sequence to form a loop, and the first current is applied to the battery to be repaired.
Preferably, the amplitude of the alternating current signal is 0V-50V;
the angular frequency of the alternating current signal is 50 pi-200 pi;
and/or the period of the alternating current signal is 0.01 s-0.04 s.
Preferably, the light injection assembly includes at least one lamp panel, and the lamp panel provides the first light.
Preferably, the heat injection assembly comprises a heating pipe and a lampshade, the heating pipe is located in the lampshade, the lampshade is made of transparent quartz glass, and the lampshade converts infrared rays provided by the heating pipe into far infrared rays to provide the first heating temperature.
Preferably, the distance between the light injection assembly and the upper surface is d1, and the distance between the heat injection assembly and the lower surface is d 2;
wherein d1 is more than or equal to 5 and less than or equal to 10cm, and d2 is more than or equal to 15m and less than or equal to 25 cm.
Compared with the prior art, the method and the device for repairing the battery provided by the invention provide the battery to be repaired; placing the battery to be repaired on the upper surface of the electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly; placing a light injection assembly on one side of the electric injection assembly close to the upper surface, and irradiating a first light ray on the battery to be repaired by using the light injection assembly; placing the heat injection assembly on one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly; wherein the light intensity of the first light is 2.838 × 1027CD-9×2.838×1027CD, the first heating temperature comprises 100-200 ℃. Simultaneously inputting a first current to the battery to be repaired, irradiating a first light and applying a first heating temperature, namely simultaneously carrying out light, electricity and heat treatment, activating hydrogen atoms in the battery by adopting an energy injection mode, changing the charged state of free hydrogen atoms and enabling the battery to be more capable ofThe method is easy to combine with defects in the battery piece to form a stable structure, so that defect recombination centers are reduced, minority carrier recombination is reduced, the minority carrier service life is prolonged, and the performance of the battery to be repaired is obviously improved.
Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a flow chart of a method for repairing a battery according to the present invention;
FIG. 2 is a graph showing the variation of a cell to be repaired with the illumination intensity;
FIG. 3 is a graph showing the temperature variation of a battery to be repaired;
FIG. 4 is a graph showing the variation of a battery to be repaired with current intensity;
fig. 5 is a structural view of an apparatus for repairing a battery according to the present invention;
FIG. 6 is a structural diagram of a light injection assembly in an apparatus for repairing a battery according to the present invention;
FIG. 7 is a structural diagram of an electrical injection assembly in an apparatus for repairing a battery according to the present invention;
fig. 8 is a structural view of a heat injection member in an apparatus for repairing a battery according to the present invention;
fig. 9 is a circuit diagram of a light injection assembly in an apparatus for repairing a battery according to the present invention;
fig. 10 is a waveform diagram of an ac signal provided by an optical injection assembly in an apparatus for repairing a battery according to the present invention;
fig. 11 is a voltage waveform diagram provided by the light injection assembly in the apparatus for repairing a battery according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In order to solve the technical problem, the invention provides a method and a device for repairing a battery. Embodiments of the method and apparatus for repairing a battery provided by the present invention will be described in detail below.
In this embodiment, referring to fig. 1 to fig. 3, fig. 1 is a flowchart of a method for repairing a battery according to the present invention, fig. 2 is a variation curve of a battery to be repaired with illumination intensity, and fig. 3 is a variation curve of a battery to be repaired with temperature. Where Eta in fig. 2 and 3 is the cell efficiency, FF is the fill factor (related to efficiency), Isc is the short circuit current, and Voc is the open circuit voltage. The method for repairing a battery provided by the embodiment comprises the following steps:
step S1: providing a battery to be repaired;
step S2: placing the battery to be repaired on the upper surface of the electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly;
step S3: placing a light injection assembly on one side of the electric injection assembly close to the upper surface, and irradiating a first light ray on the battery to be repaired by using the light injection assembly;
step S4: placing the heat injection assembly on one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly;
wherein the light intensity of the first light is 2.838 × 1027CD-9×2.838×1027CD, the first heating temperature comprises 100-200 ℃.
It should be noted that, in step S2, step S3, and step S4, the batteries to be repaired are not processed in sequence, but are repaired at the same time.
It can be understood that the present embodiment provides a method for repairing a cell, which is used for repairing some cells to be repaired, because some cells located outdoors migrate sodium ions (Na +) due to an electric field between a grounding frame and a solar cell, and Na diffuses into defects of a silicon lattice and crosses a PN junction, which directly causes leakage current, so that the parallel resistance is significantly reduced, and the electrical performance of the cell is reduced. The present application is different from the prior art which aims at the objects that some previous proposals aim at, and the prior art aims at improving the photoelectric conversion efficiency of the battery which causes the light-induced attenuation due to the boron-oxygen recombination by means of light injection or electric injection, light annealing or other means before the manufacturing of the battery piece is completed. The light induced decay by boron-oxygen recombination is a reversible transformation. The generated boron-oxygen complex causes the diffusion length of minority carriers in a silicon matrix to be reduced, so that many carriers are recombined in the matrix and cannot be diffused to the surface. The photoelectric conversion efficiency of the cell decreases. Through light injection or electric injection, the non-equilibrium carrier injection can change the form conversion of boron-oxygen recombination, so that the boron-oxygen recombination is stable and unstable, the boron-oxygen recombination is broken, the internal defects of the battery are reduced, the light-induced attenuation is reduced, and the electrical property of the battery is improved.
Therefore, in order to repair the batteries to be repaired, which cause the electrical performance reduction after use, the invention realizes the recovery, efficiency improvement and reutilization of the batteries to be repaired. The battery to be repaired can be arranged on the upper surface of the electric injection assemblyInputting a first current into the battery to be repaired by using the light injection assembly, and irradiating a first light ray above the battery to be repaired by using the light injection assembly, wherein the light intensity range of the first light ray is 2.838 multiplied by 1027CD-9×2.838×1027And CD, and meanwhile, applying a first heating temperature to the lower part of the battery to be repaired by utilizing the heat injection assembly, wherein the first heating temperature range is 100-200 ℃. Meanwhile, a first current is input into the battery to be repaired, first light is irradiated, a first heating temperature is applied, namely, light, electricity and heat treatment are carried out simultaneously, hydrogen atoms in the battery are activated in an energy injection mode, the charged state of free hydrogen atoms is changed, the free hydrogen atoms can be easily combined with defects in a battery piece, a stable structure is formed, therefore, defect recombination centers are reduced, minority carrier recombination is reduced, the minority carrier lifetime is prolonged, and the performance of the battery to be repaired is remarkably improved. Wherein the light injection and the electrical injection are performed to activate hydrogen atoms in a passivation layer of the battery by injection energy to change a state of free hydrogen atoms; the thermal injection plays a role in catalysis, accelerates the movement of hydrogen atoms, enables the hydrogen atoms to diffuse into a cell film layer structure, enables the speed of the hydrogen atoms in neutralizing recombination sites to be higher, and therefore the cell can be repaired to the maximum extent by simultaneously processing light, electricity and heat.
Continuing with table 1 below, table 1 is a graph of the rate of change of the efficiency of the cells to be repaired in different treatment modes. As is apparent from the data in table 1, the first current is input to the battery to be repaired, the first light is irradiated, and the first heating temperature is applied, so that the variation of the battery to be repaired after the light, electricity and heat treatment is performed is the highest, and the effect can be effectively improved compared with the case of performing two types of treatment at the same time.
TABLE 1 rates of change in efficiency of cells to be repaired under different treatment regimes
Wherein the light intensity range of the first light is 2.838 × 1027CD-9×2.838×1027CD, since the light intensity of the first light is greater than 9 × 2.838 × 1027In CD, the surface temperature of the battery to be repaired is overhigh due to overhigh illumination intensity, the surface of the battery to be repaired is damaged, the photoelectric conversion efficiency of the battery to be repaired is reduced, excessive hydrogen atoms activated in the battery to be repaired are excessive, the excessive hydrogen atoms and iron carbon and the like in the battery form new compounds, new defect recombination centers are caused, the conversion efficiency of the battery is reduced and the like, so that the problems that the light intensity of the first light is smaller than 9 x 2.838 x 10 and the like are limited by the invention27CD to achieve optimal healing effect. In addition, the specific numerical value of the light intensity of the first light is not limited, and can be set according to actual conditions. Continuing with fig. 2 and table 2 below, table 2 below shows the actual illumination intensity values corresponding to different illumination intensity settings. The electrical property recovery of the battery is best under the condition that the illumination intensity is 10 percent of the illumination intensity (3 sun illumination intensities), and 1 sun illumination intensity is equal to 2.838 multiplied by 1027CD, the light intensity range of the first light can be set to be 2 multiplied by 2.838 multiplied by 1027CD-4×2.838×1027CD, preferably, the first light has a light intensity of 3 × 2.838 × 1027To achieve the optimal healing effect.
Table 2 shows the actual illumination intensity values corresponding to different illumination intensity settings
The first heating temperature is in the range of 50-200 ℃, and when the first heating temperature is lower than 50 ℃, the heat injection temperature is too low, so that the repair passivation is not obvious (or the reaction rate of the catalytic acceleration experiment process is low) due to the too low temperature, and the improvement on the battery to be repaired is not facilitated. And when the first heating temperature is higher than 200 ℃, the heat injection temperature is too high, and the surface temperature of the battery is too high due to the too high temperature, so that the surface interface of the battery is damaged, and the photoelectric conversion efficiency of the battery is reduced. Therefore, the range of the first heating temperature is limited to be 50-200 ℃ so as to realize the optimal repairing effect. In addition, the range of the first heating temperature is not limited, and the range of the first heating temperature can be set to be 100-200 ℃, as shown in fig. 3, the condition of recovering the individual performance of the battery is the best when the heat injection temperature is 150 ℃, preferably, the first heating temperature is 140-160 ℃, and can also be set to be 150 ℃, so as to realize the optimal repairing effect.
In some alternative embodiments, continuing with the method for repairing a battery described in fig. 1, the first light has a wavelength of 550nm to 650 nm.
It can be understood that the present embodiment provides a method for repairing a battery: in step S3, the light injection module is disposed on a side of the electrical injection module near the upper surface, and the light injection module irradiates the cell to be repaired with a first light having a wavelength ranging from 550nm to 650nm, so that the first light activates hydrogen atoms in the passivation layer of the cell by injecting energy to change the state of free hydrogen atoms, and the hydrogen atoms can be easily combined with defects in the cell sheet to form a stable structure, thereby reducing defect recombination centers, reducing minority carriers recombination, improving minority carrier lifetime, and significantly improving the performance of the cell to be repaired. The specific value of the first light wavelength range is not limited by the invention, and as the light absorption wavelength range of the crystalline silicon battery is 300-1200nm, the light absorption rate of the crystalline silicon battery is the highest, and the yellow light has no damage to human eyes, preferably, the wavelength of the first light is in the range of 580-590mm, the wavelength of the first light can also be set to be 590nm, and the light with the wavelength of 590nm can be monochromatic yellow light, so as to realize the optimal repair effect. However, the present invention is not limited to this, and light of other wavelengths may be provided, and the same effect as that of the yellow light irradiation can be achieved by adjusting the irradiation time and the irradiation light intensity.
In some alternative embodiments, and with continued reference to fig. 1 and 4, fig. 4 is a graph of the current intensity of the battery to be repaired. Where Eta in fig. 4 is the cell efficiency, FF is the fill factor (related to efficiency), Isc is the short circuit current, and Voc is the open circuit voltage. In the method for repairing a battery provided by this embodiment, the first current is 5A to 15A.
It can be understood that the present embodiment provides a method for repairing a battery: in step S2, the battery to be repaired is placed on the upper surface of the electrical injection assembly, and a first current is input to the battery to be repaired by the electrical injection assembly, wherein the first current is 5A-15A. When the first current is less than 5A, the repairing effect of the battery to be repaired by electric injection is not obvious, and the experiment is unsafe because the 18A current is injected in the experiment but the temperature of the electric injection connector lug is too high and the electric injection connector lug is burnt out due to the overlarge current value in the experiment process, and the current is more than 15, so that certain safety risk exists, and the overlarge current is not recommended to be added. Therefore, the first current is limited to be 5A-15A, so that the first current can activate the hydrogen atoms in the passivation layer of the battery to change the state of free hydrogen atoms through injecting energy, the hydrogen atoms can be easily combined with the defects in the battery piece to form a stable structure, the defect recombination centers are reduced, minority carrier recombination is reduced, the minority carrier lifetime is prolonged, and the performance of the battery to be repaired is remarkably improved. However, the specific value of the first current is not limited in the present invention, and may be set according to actual situations. The recovery of the electrical injection current is better as the current injection intensity is larger, but the test is safest when the experimental device takes 10A current for injection, preferably, the first current is in the range of 8A-12A, and the first current can also be set to be 10A, so as to realize the optimal repairing effect.
In some optional embodiments, with reference to fig. 1, the method for repairing a battery provided in this embodiment performs light injection processing for a first duration on the battery to be repaired, irradiates the battery to be repaired with first light for the first duration, and applies a first heating temperature for the first duration to the battery to be repaired; wherein the first time period is 30-60 min.
It can be understood that, in the method for repairing a battery provided in this embodiment, the light injection process is performed for a first duration in step S1, the first light is irradiated for the first duration in step S2, the first heating temperature is applied to the battery to be repaired for the first duration in step S3, and the process is performed on the battery to be repaired synchronously in step S1, step S2, and step S3, where the first duration is 30min to 60 min. The repair effect is not obvious when the repair time is less than 30min, and the battery can be damaged secondarily when the repair time is longer than 60min, so that the conversion efficiency of the battery is reduced. Therefore, the range of the first duration is set to be 30-60 min, the specific numerical value of the first duration is not limited in the range, preferably, the first duration can be set to be 45-55 min, and the first duration can also be set to be 50min, so that the optimal repairing effect is achieved.
In this embodiment, referring to fig. 5 to 8, fig. 5 is a structural diagram of a device for repairing a battery according to the present invention, fig. 6 is a structural diagram of an optical injection assembly in the device for repairing a battery according to the present invention, fig. 7 is a structural diagram of an electrical injection assembly in the device for repairing a battery according to the present invention, and fig. 8 is a structural diagram of an optical injection assembly in the device for repairing a battery according to the present invention. The apparatus 100 for repairing a battery provided in this embodiment includes a light injection assembly 10, an electrical injection assembly 20, and a heat injection assembly 30; the electric injection assembly 20 comprises an upper surface 21 and a lower surface 22 which are oppositely arranged, the upper surface 21 comprises at least one placing area Q, the placing area Q is used for storing the battery S to be repaired, and the electric injection assembly 20 provides a first current for inputting the first current to the battery S to be repaired; the light injection assembly 10 is located on one side of the upper surface 21 away from the lower surface 22, and the light injection assembly 10 provides a first light ray for irradiating the cell S to be repaired; the heat injection member 30 is located on a side of the lower surface 22 away from the upper surface 21, and the heat injection member 30 provides a first heating temperature for application to the battery S to be repaired.
It can be understood that the apparatus 100 for repairing a battery provided in this embodiment includes a light injection assembly 10, an electric injection assembly 20, and a heat injection assembly 30, where the electric injection assembly 20 includes an upper surface 21 and a lower surface 22 which are oppositely disposed, the upper surface 21 includes at least one placement area Q for storing a battery S to be repaired, and the light injection assembly 10 is disposed near the upper surface 21, and the heat injection assembly 30 is disposed near the lower surface 22, so that when the electric injection assembly 20 provides a first current to the battery S to be repaired, the light injection assembly 10 provides a first light to directly irradiate the battery S to be repaired, and the heat injection assembly 30 provides a first heating temperature to the battery to be repaired, that is, the apparatus 100 for repairing a battery can perform light, electric, and heat treatments to the battery to be repaired at the same time, and activate hydrogen atoms in the battery by means of energy injection, the charged state of the free hydrogen atoms is changed, so that the free hydrogen atoms can be easily combined with defects in the battery piece to form a stable structure, the defect recombination centers are reduced, the minority carrier recombination is reduced, the minority carrier lifetime is prolonged, and the performance of the battery to be repaired is obviously improved. Wherein the light injection and the electrical injection are performed to activate hydrogen atoms in a passivation layer of the battery by injection energy to change a state of free hydrogen atoms; the heat injection plays a role in catalysis, accelerates the movement of hydrogen atoms, enables the hydrogen atoms to diffuse into a cell film layer structure, enables the speed of the hydrogen atoms in neutralizing compound sites to be higher, and therefore the cell can be repaired to the maximum extent by adopting a mode of simultaneous treatment of light, electricity and heat treatment.
In some alternative embodiments, referring to fig. 9 to 11, fig. 9 is a circuit diagram of an optical injection assembly in a device for repairing a battery according to the present invention, fig. 10 is a waveform diagram of an ac signal provided by the optical injection assembly in the device for repairing a battery according to the present invention, and fig. 11 is a waveform diagram of a voltage provided by the optical injection assembly in the device for repairing a battery according to the present invention. In fig. 10, the ac signal is taken as a sinusoidal signal as an example, but the present invention is not limited thereto, and other ac signals may be selectively set according to actual situations. In the apparatus 100 for repairing a battery provided in this embodiment, the electrical injection assembly 20 further includes a voltage source AC, a diode O, and a filter U, where the voltage source AC provides an alternating current signal; the voltage source AC, the diode O, the filter U and the battery S to be repaired are electrically connected in sequence to form a loop, and a first current is applied to the battery S to be repaired. It can be understood that the electric injection assembly 20 in the apparatus 100 for repairing a battery provided in this embodiment further includes a voltage source AC, a diode O and a filter U, the voltage source AC, the diode O, the filter U and the battery S to be repaired are sequentially electrically connected to form a loop, the voltage source AC provides an alternating current signal, the alternating current signal is a sine wave signal and includes a positive voltage and a negative voltage, the alternating current signal flows through the diode O, only the positive voltage can be output by utilizing the unidirectional conduction property of the diode O, and then the forward voltage is output to the current wave filter U, and rectification is realized by the filter U to obtain a stable forward voltage output, wherein the stable forward voltage is the same with respect to the period of the alternating current signal. The stable first current is provided for the battery S to be repaired according to the stable forward voltage, and can be 5A-15A, so that the first current can activate the hydrogen atoms in the battery passivation layer to change the state of free hydrogen atoms through injecting energy, the first current can be easily combined with the defects in the battery piece to form a stable structure, the defect recombination centers are reduced, minority carrier recombination is reduced, the minority carrier lifetime is prolonged, and the performance of the battery to be repaired is remarkably improved.
In some alternative embodiments, continuing with fig. 9, the present embodiment provides a battery repairing apparatus 100: the amplitude of the alternating current signal is 0V-50V; the angular frequency of the alternating current signal is 50 pi-200 pi; and/or the period of the alternating current signal is 0.01 s-0.04 s.
It can be understood that, in the apparatus 100 for repairing a battery provided in this embodiment, the voltage source AC in the electrical injection assembly provides an AC signal, the amplitude of the AC signal is 0V to 50V, the angular frequency of the AC signal is 50 pi to 200 pi, the period of the AC signal is 0.01s to 0.04s, the starting phase of the AC signal is 0V, the dc offset of the AC signal is-0.1V to 0.1V, the number of scanning cycles of the AC signal is in the range of 10 to 100 times, preferably, the amplitude of the AC signal is 44V, the angular frequency of the AC signal is 100 pi, the period of the AC signal is 0.02s, the dc offset of the AC signal is 0V, and the number of scanning cycles of the AC signal is 50 times. Because the 44V voltage ratio is lower, the low-voltage experiment is safer, and the period and the angular frequency are also the same as the standard 220V alternating-current power supply in China. If the alternating current power supply is not met, an additional transformer is needed, and the equipment cost is additionally increased, so that the process difficulty can be simplified and the cost can be saved by the arrangement.
In some alternative embodiments, with reference to fig. 5 and fig. 6, the apparatus 100 for repairing a battery provided in this embodiment includes at least one lamp panel 11, where the lamp panel 11 provides the first light.
It can be understood that, the device 100 of the repair battery that this embodiment provided, light injection subassembly 10 includes at least one lamp plate 11, including a plurality of LED lamps in the lamp plate 11 be used for providing first light, wherein a plurality of lamp plates 11 can arrange in array, the preparation of being convenient for, and can provide even first light to waiting to restore the battery, make first light play and change free hydrogen atom's state through the hydrogen atom who pours into in the energy activation battery passivation layer, make it can be easier combine with the defect in the battery piece, form stable structure, thereby reduce defect recombination center, thereby reduce the minority carrier recombination and improved minority carrier lifetime, show the performance that promotes waiting to restore the battery.
In some alternative embodiments, with reference to fig. 5 and 8, the apparatus 100 for repairing a battery according to the present embodiment includes a heat injection assembly 30 including a heating tube 31 and a lamp housing 32, the heating tube 31 is located in the lamp housing 32, the lamp housing 32 is made of transparent quartz glass, and the lamp housing 32 converts infrared rays provided by the heating tube 31 into far infrared rays to provide a first heating temperature. Wherein the far infrared ray has a wavelength range of 25 μm-500 μm.
It can be understood that, in the apparatus 100 for repairing a battery provided in this embodiment, the heat injection assembly 30 includes the heating pipe 31 and the lamp cover 32, the lamp cover 31 surrounds the heating pipe 31, so that the heating pipe 31 is located in the lamp cover 32, the lamp cover 32 is made of transparent quartz glass, the lamp cover 32 converts the infrared ray provided by the heating pipe 31 into a far infrared ray, the far infrared ray has a fast temperature rise speed, the heating is uniform, and the thermal inertia is small. And the crystal silicon cell can absorb the spectrum range of 300-1100nm, so that far infrared light cannot be absorbed by the crystal silicon cell, and the influence of a heating light source on the cell can be avoided.
In some alternative embodiments, and with continued reference to fig. 5, the present embodiment provides a device 100 for repairing a battery, wherein the light injection assembly 10 is spaced apart from the upper surface 21 by a distance d1, and the heat injection assembly 30 is spaced apart from the lower surface 22 by a distance d 2; wherein d1 is more than or equal to 5cm and less than or equal to 10cm, and d2 is more than or equal to 15m and less than or equal to 25 cm.
It is understood that the present embodiment provides the apparatus 100 for repairing a battery, in which the distance between the light injection member 10 and the upper surface 21 is in the range of 5cm to 10cm, and the distance between the heat injection member 30 and the lower surface 22 is in the range of 15cm to 25cm, preferably, d2 is 20 cm. Too high a distance reduces the repair effect and increases the repair time, and too low a distance concentrates energy to damage the battery. By setting the distance between the injection member 10 and the upper surface 21 and the distance between the thermal injection member 30 and the lower surface 22 within the above ranges, the energy of the first light provided by the light injection member 10 and the energy of the first heating temperature provided by the thermal injection member 30 can be quickly transmitted to the battery cell, so as to achieve the optimal repairing effect.
According to the embodiment, the method and the device for repairing the battery provided by the invention at least realize the following beneficial effects:
compared with the prior art, the method and the device for repairing the battery provided by the invention provide the battery to be repaired; placing the battery to be repaired on the upper surface of the electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly; placing a light injection assembly on one side of the electric injection assembly close to the upper surface, and irradiating a first light ray on the battery to be repaired by using the light injection assembly; placing the heat injection assembly on one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly; wherein the light intensity of the first light is 2.838 × 1027CD-9×2.838×1027CD, the first heating temperature comprises 100-200 ℃. Meanwhile, a first current is input into the battery to be repaired, first light is irradiated, a first heating temperature is applied, namely, light, electricity and heat treatment are carried out simultaneously, hydrogen atoms in the battery are activated in an energy injection mode, the charged state of free hydrogen atoms is changed, the free hydrogen atoms can be easily combined with defects in a battery piece, a stable structure is formed, therefore, defect recombination centers are reduced, minority carrier recombination is reduced, the minority carrier lifetime is prolonged, and the performance of the battery to be repaired is remarkably improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A method of repairing a battery, comprising:
providing a battery to be repaired;
placing the battery to be repaired on the upper surface of an electric injection assembly, and inputting a first current to the battery to be repaired by using the electric injection assembly;
placing a light injection assembly on one side, close to the upper surface, of the electric injection assembly, and irradiating the battery to be repaired with first light rays by using the light injection assembly;
placing a heat injection assembly at one side of the electric injection assembly, which is far away from the upper surface, and applying a first heating temperature to the battery to be repaired by using the heat injection assembly;
wherein the light intensity of the first light is 2.838 × 1027CD-9×2.838×1027CD, wherein the first heating temperature comprises 100-200 ℃.
2. The method for repairing a battery as claimed in claim 1, wherein the first light has a wavelength of 550nm to 650 nm.
3. The method of repairing a battery of claim 1, wherein said first current is a current of 5A-15A.
4. The method according to claim 1, wherein the light injection treatment is performed for a first time period upon the battery to be repaired, the first light is irradiated for the first time period upon the battery to be repaired, and the first heating temperature is applied for the first time period upon the battery to be repaired;
wherein the first time period is 30-60 min.
5. The device for repairing the battery is characterized by comprising a light injection assembly, an electric injection assembly and a heat injection assembly;
the electric injection assembly comprises an upper surface and a lower surface which are oppositely arranged, the upper surface comprises at least one placing area, the placing area is used for storing a battery to be repaired, and the electric injection assembly provides a first current for inputting to the battery to be repaired;
the light injection assembly is positioned on one side of the upper surface, which is far away from the lower surface, and provides first light rays for irradiating the battery to be repaired;
the heat injection assembly is located on one side of the lower surface, which is far away from the upper surface, and provides a first heating temperature for applying to the battery to be repaired.
6. The apparatus for repairing a battery of claim 5, wherein the electrical injection assembly further comprises a voltage source, a diode, and a filter, the voltage source providing an alternating current signal;
the voltage source, the diode, the filter and the battery to be repaired are electrically connected in sequence to form a loop, and the first current is applied to the battery to be repaired.
7. The apparatus for repairing battery according to claim 6,
the amplitude of the alternating current signal is 0V-50V;
the angular frequency of the alternating current signal is 50 pi-200 pi;
and/or the period of the alternating current signal is 0.01 s-0.04 s.
8. The apparatus for repairing a battery as defined in claim 5, wherein the light injection assembly comprises at least one lamp panel, the lamp panel providing the first light.
9. The apparatus for repairing a battery as claimed in claim 5, wherein the heat injection assembly includes a heating tube and a lamp housing, the heating tube is disposed in the lamp housing, the lamp housing is made of transparent quartz glass, and the lamp housing converts infrared rays provided from the heating tube into far infrared rays to provide the first heating temperature.
10. The apparatus for repairing a battery as claimed in claim 5, wherein the light injection member is spaced apart from the upper surface by a distance d1, and the heat injection member is spaced apart from the lower surface by a distance d 2;
wherein d1 is more than or equal to 5 and less than or equal to 10cm, and d2 is more than or equal to 15m and less than or equal to 25 cm.
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