CN114887935A - Screening method of secondary battery and distributed photovoltaic power generation system participated in screening method - Google Patents
Screening method of secondary battery and distributed photovoltaic power generation system participated in screening method Download PDFInfo
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- CN114887935A CN114887935A CN202210421223.XA CN202210421223A CN114887935A CN 114887935 A CN114887935 A CN 114887935A CN 202210421223 A CN202210421223 A CN 202210421223A CN 114887935 A CN114887935 A CN 114887935A
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- 238000012216 screening Methods 0.000 title claims abstract description 44
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- 239000011159 matrix material Substances 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 239000010926 waste battery Substances 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Abstract
The invention discloses a screening method of secondary batteries and a distributed photovoltaic power generation system participated in the screening method, wherein the method comprises the following steps: classifying the secondary batteries according to the same manufacturer and the assimilation department; screening out batteries and modules with the same specification from the classified secondary batteries according to a preset standard, and generating the batteries and modules with the same type, the same appearance, the battery production date close to a preset threshold value, and the battery service time close to a preset threshold value; and (4) carrying out full performance detection on the sampled battery, and carrying out recombination on the secondary battery when the detection is qualified. The method provided by the application not only controls the cost, but also can increase the stability and the safety of the secondary battery pack.
Description
Technical Field
The invention relates to the technical field of secondary battery screening methods and secondary battery participated distributed photovoltaic power generation systems, in particular to a secondary battery screening method and a participated distributed photovoltaic power generation system.
Background
With the continuous development of society, the new energy automobile industry develops rapidly, and the installation scale of power battery is constantly increased, and under the policy incentive of country, power battery duration is constantly increased, and the technology is more and more mature, and new energy automobile replaces traditional car and does not keep pace. Meanwhile, a large number of power batteries are being decommissioned, the first power battery decommissioning tide comes, and if the decommissioned batteries are not properly treated, the potential hazards of environment and safety are brought to the society, and the waste of resources is also caused.
In practice, after the new energy automobile power battery is retired, the power battery is still in the first half of the life cycle of the battery, generally, the residual capacity is still 70% -80%, and the power battery can be used in scenes such as energy storage and standby power in a degradable manner, so that the maximum utilization of the residual energy is realized. Compared with other batteries, the retired lithium battery has obvious advantages in the aspects of cycle life, specific energy, nominal voltage, environmental friendliness, overcharge resistance, maintenance and the like. For example: in terms of life, it is 5 times that of a lead-acid battery and 3 times that of a nickel-hydrogen battery. In addition, the self-discharge rate of the nickel-metal hydride battery is 30%, while the self-discharge rate of the lithium battery is generally less than 3%, so that the advantages of the lithium battery in the aspect of preventing self-discharge are obvious.
At the present stage, the number of merchants using the retired power battery is not large, and how to correctly use the retired power battery is still in a starting stage. The screening method for the retired battery is not mature, and many manufacturers of secondary batteries directly utilize the retired power battery, so that the problem of poor battery consistency exists.
The existing waste power battery recycling technology is imperfect, relevant standards are lacked, the standard of inspection and detection is similar to a new power battery, but the cost of using the waste power battery is undoubtedly increased according to the detection technology of the new battery, the cost is higher than the cost of purchasing and using the new battery, and the development of the waste battery recycling industry is not facilitated. And most manufacturers directly utilize the waste power batteries, and because the sources of the waste power batteries are diversified, the consistency of the batteries is poor, and certain potential safety hazards exist in direct recombination and utilization.
In addition, the existing energy storage batteries are various, the technology of the existing energy storage batteries is mature, the energy storage batteries applied to the photovoltaic power generation system comprise colloid batteries, lead-acid batteries, lithium iron phosphate batteries and the like, and the related research of applying the secondary batteries to the photovoltaic power generation system is still in the starting stage.
The prior art has the following defects:
(1) the method has the advantages that an independent secondary battery detection process is not provided, the method is basically referred to a new battery detection method, or a battery echelon merchant directly disassembles and recombines the batteries without systematic screening and direct utilization, and the problems of poor consistency of a secondary battery pack and certain potential safety hazards exist.
(2) A large number of brand-new batteries are applied to a photovoltaic power generation system, and have the problems of high cost and environmental pollution.
(3) The existing distributed photovoltaic power generation system has the problems of single operation mode and insufficient flexibility. When the photovoltaic module generates excessive power, resources are wasted easily, the generated energy is reduced due to overhigh temperature of the photovoltaic module, and the problem that the heating of the lithium ion battery is out of control is caused due to overhigh temperature in the energy storage box.
Disclosure of Invention
Therefore, the screening method of the secondary battery and the participated distributed photovoltaic power generation system thereof provided by the invention overcome the defects of poor consistency, low safety coefficient, high cost and poor flexibility of the secondary battery pack in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
in a first aspect, an embodiment of the present invention provides a screening method for secondary batteries, including:
classifying the secondary batteries according to the same manufacturer and the same department of assimilation;
screening out batteries and modules with the same specification from the classified secondary batteries according to a preset standard, and generating the batteries and modules with the same type, the same appearance, the battery production date close to a preset threshold value, and the batteries and modules with the battery service time close to the preset threshold value;
and (4) carrying out full performance detection on the sampled battery, and carrying out recombination on the secondary battery when the detection is qualified.
Optionally, the method further comprises:
and when the detection is unqualified, recovering the waste battery from the detected battery.
Optionally, the sampling battery full performance detection comprises: the method comprises the following steps of detecting the chemical performance of the battery, detecting the service life of the battery and detecting the safety of the battery.
Optionally, the chemical property test of the battery comprises: detecting a preset chemical property of the secondary battery, wherein the preset chemical property comprises: capacity, internal resistance, power characteristics.
Optionally, the lifetime detection of the battery comprises: and detecting the service life of the secondary battery in different working conditions.
Optionally, the safety check of the battery includes: and detecting the safety characteristics of overcharge, overdischarge and short circuit of the secondary battery.
In a second aspect, an embodiment of the present invention provides a distributed photovoltaic power generation system with secondary battery participation, including: PV matrix, secondary battery, first switch, second switch, diode, inverter, cleaning device, heat sink, DC load, AC load, wherein,
the first end of the PV square array is respectively connected with the first switch and the anode of the diode, and the cathode of the diode is respectively connected with the second switch and the positive pole of the secondary battery;
and the second end of the PV square matrix is respectively connected with the cleaning device, the heat dissipation device, the direct current load, the alternating current load and the negative electrode of the secondary battery.
Optionally, the operation mode of the distributed photovoltaic power generation system includes: overflow mode, saturation mode, deficit mode, zero mode.
In a third aspect, an embodiment of the present invention provides a terminal, including: the screening method comprises the steps of providing at least one processor, and a memory which is in communication connection with the at least one processor, wherein the memory stores instructions which can be executed by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor executes the screening method for the secondary battery according to the first aspect of the embodiment of the invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to cause a computer to execute the method for screening a secondary battery according to the first aspect of the embodiment of the present invention.
The technical scheme of the invention has the following advantages:
1. the invention provides a screening method of secondary batteries, and provides a method for screening waste batteries in batches by sampling, and the whole process of inspection and detection is optimized. The waste power battery is subjected to primary screening, further screening, battery sampling full-performance detection and other steps to obtain a secondary battery pack, so that the cost is controlled, and the stability and the safety of the secondary battery pack are improved.
2. The screened secondary battery is applied to a distributed photovoltaic power generation system and used for replacing lead-acid batteries, nickel-hydrogen batteries, colloid batteries and the like, so that the retired lithium battery has obvious advantages in the aspects of cycle life, specific energy, nominal voltage, overcharge resistance and maintenance, and has great significance in the aspects of environmental protection, resource saving, investment cost control and the like. Meanwhile, aiming at the application of the secondary battery pack, the control strategy of the distributed photovoltaic controller is further optimized, a cleaning device and a heat dissipation device are added, the operation mode is enriched, and the maximum utilization of photovoltaic power generation can be realized. The secondary battery is utilized to fully exert the energy storage function, the peak valley adjustment can be realized, the light abandoning phenomenon is avoided, and the utilization rate of light resources is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart illustrating a specific example of a screening method for a secondary battery according to an embodiment of the present invention;
fig. 2 is a flowchart of a specific example of a secondary battery production process according to an embodiment of the present invention;
fig. 3 is a controller circuit principle of a specific example of a distributed photovoltaic power generation system with secondary battery participation according to an embodiment of the present invention;
fig. 4 is a diagram of an operation mode of a distributed photovoltaic power generation system of a specific example of a distributed photovoltaic power generation system with secondary battery participation according to an embodiment of the present invention;
fig. 5 is a structural diagram of a cleaning device of a specific example of a distributed photovoltaic power generation system in which a secondary battery participates, according to an embodiment of the present invention;
fig. 6 is a structural diagram of an energy storage box of a specific example of a distributed photovoltaic power generation system with secondary batteries involved according to an embodiment of the present invention;
fig. 7 is a composition diagram of a specific example of a terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment of the invention provides a screening method of secondary batteries, provides a method for screening waste power batteries in batches and in a sampling manner, and optimizes the whole process of inspection and detection. The cost is strictly controlled, and the stability and the safety of the secondary battery pack can be improved. As shown in fig. 1, the method comprises the following steps:
step S1: secondary batteries were classified by the same manufacturer and department of assimilation.
Step S2: and screening out batteries and modules with the same specification from the classified secondary batteries according to a preset standard, and generating the batteries and modules with the same type, the same appearance, the battery production date close to a preset threshold value, and the battery and module with the battery service time close to the preset threshold value.
In an embodiment of the present invention, the preset criteria include: the external dimensions and the tab positions are only given as examples, but not limited to these, and the corresponding preset standards are selected according to actual requirements in practical applications. The preset threshold is not limited herein, and the corresponding threshold is selected according to the actual situation.
In one embodiment, the batteries and modules are selected to have the same dimensions, such as external dimensions, tab locations, and the like. The same type of cell is selected, for example: as well as energy or power type batteries. And selecting the batteries and the modules with the battery production dates close to each other. And selecting the battery and the module with the service time close to that of the battery.
Step S3: and (4) carrying out full performance detection on the sampled battery, and carrying out recombination on the secondary battery when the detection is qualified.
In the embodiment of the invention, the sampling battery full performance detection comprises the following steps: the method comprises the following steps of detecting the chemical performance of the battery, detecting the service life of the battery and detecting the safety of the battery.
In one embodiment, the chemical property test of the battery comprises: detecting the preset chemical properties of the secondary battery, wherein the preset chemical properties comprise: capacity, internal resistance, power characteristics. The method is only used as an example, but not limited to, and the corresponding chemical properties are selected according to actual situations in practical application.
In one embodiment, the battery life detection comprises: and detecting the service life of the secondary battery in different working conditions.
In one embodiment, the safety test of the battery comprises: and detecting the safety characteristics of overcharge, overdischarge and short circuit of the secondary battery.
In an embodiment of the present invention, the method further comprises: and when the detection is unqualified, recovering the waste battery from the detected battery.
In another embodiment, a secondary battery manufacturing process is shown in fig. 2. The battery manufacturer utilizes raw materials to produce completely new power batteries, qualified power batteries are provided for new energy automobile manufacturers, the new energy automobiles are assembled with other accessories to produce new energy automobiles and sold to consumers, and power battery units meeting the requirement of reutilization are recombined through testing and screening when the power batteries of the automobiles are going to be retired, so that the battery pack capable of being reutilized is obtained.
The screening method of the secondary batteries provided by the embodiment of the invention provides a method for screening waste batteries in batches by sampling, and optimizes the whole process of inspection and detection. The waste power battery is subjected to primary screening, further screening, battery sampling full-performance detection and the like to obtain a secondary battery pack, so that the cost is controlled, and the stability and the safety of the secondary battery pack can be improved.
Example 2
The embodiment of the invention provides a distributed photovoltaic power generation system with secondary batteries, which comprises: PV matrix, secondary battery, first switch, second switch, diode, inverter, cleaning device, heat abstractor, direct current load, interchange load. The system provided by the embodiment of the invention is divided into a plurality of operation modes, and compared with a common distributed photovoltaic power generation system, when the generated energy is excessive and the secondary battery pack is fully charged, the redundant electric quantity is used for cleaning the photovoltaic assembly and reducing the temperature in the photovoltaic assembly and the energy storage box, so that the stability and the safety of the distributed photovoltaic power generation system can be improved while the resources are fully utilized.
In the embodiment of the invention, the energy storage box is internally provided with the secondary battery pack and the module. Since the consistency of large-scale application of secondary batteries is not completely solved, the secondary battery pack applied to this system has a limited scale. Compared with a common distributed photovoltaic power generation system, the energy storage installed capacity is limited, and the photovoltaic power generation system is easy to generate more electric quantity, namely an electricity overflow mode.
In the embodiment of the present invention, the circuit principle of the distributed photovoltaic power generation system controller is as shown in fig. 3:
the first end of the PV square matrix is respectively connected with the first switch and the anode of the diode, and the cathode of the diode is respectively connected with the second switch and the positive pole of the secondary battery. And the second end of the PV square matrix is respectively connected with the cleaning device, the heat dissipation device, the direct current load, the alternating current load and the negative electrode of the secondary battery.
In an embodiment of the present invention, an operation mode of a distributed photovoltaic power generation system includes: overflow mode, saturation mode, deficit mode, zero mode. As shown in fig. 4, it is a diagram of an operation mode of a distributed photovoltaic power generation system.
In one embodiment, in the power overflow mode, the sunlight is sufficient, the power generation amount meets the requirements of the power load and the secondary battery, and meanwhile, the excess power generation amount also can be used for system self-maintenance, and the operation logic of the controller is as follows:
at first switch (switch 1) attach fitting 1 starts cleaning device, and intelligence clearance robot clears up photovoltaic module, improves photovoltaic module's generated energy. Then connect 2 with first switch (switch 1), start heat abstractor, wherein heat abstractor divide into two parts: partially because the generated energy is reduced due to overhigh surface temperature of the photovoltaic module in a strong light environment, a heat dissipation device arranged on the intelligent cleaning robot is started, the surface temperature of the photovoltaic module is reduced, and the generated energy is improved; in addition, the temperature of the energy storage power station can rise due to long-term high-load operation of the secondary battery pack, certain potential safety hazards exist, at the moment, the heat dissipation device on the energy storage power station is started, the temperature in the energy storage power station box is reduced, and the lithium battery thermal runaway is avoided. The cleaning device is shown in fig. 5, which contains a heat sink. The energy storage tank is shown in fig. 6.
In one embodiment, in the saturation mode, the sunlight is sufficient, the power generation amount of the photovoltaic module can satisfy the charging of the secondary battery pack and the power consumption of the load, and the operation logic of the controller is as follows:
firstly, a first switch (switch 1) and a second switch (switch 2) are disconnected, the photovoltaic module generates power to charge a secondary battery pack, when the secondary battery pack is saturated in electric quantity, the second switch (switch 2) is disconnected, the first switch (switch 1) is connected with a connector 3, and at the moment, the photovoltaic module generates power to directly supply power to a direct-current load; the first switch (switch 1) is connected with the joint 4, and at the moment, the photovoltaic module generates electricity and supplies power to the alternating current load through the inverter.
In a specific embodiment, the feeding mode: under this mode, sunshine is not enough, and photovoltaic module supplies power alone can not satisfy the load demand. At the moment, the first switch (switch 1) and the second switch (switch 2) are respectively connected with the connectors 3 and 4, and the photovoltaic module and the secondary battery pack jointly supply power to the load.
In one embodiment, the null mode: under this mode, no illumination, photovoltaic module does not have the power generation volume. At this time, the connectors 1 and 2 connected to the first switch (switch 1) and the second switch (switch 2) are disconnected, and the secondary battery pack alone supplies power to the load.
In one embodiment, the structure of the cleaning device is shown in FIG. 5, wherein 1 is the microfiber brush cleaning device; 2, a photovoltaic module heat dissipation device (electric fan); 3 is a heat dissipation channel; 4 is a walking gear; 5 is a fixed spring; 6 is a steel wire rope; 7 is a guide rail; and 8 is a driving motor.
Install the superfine fiber brush in the cleaning device, there is heat dissipation channel brush both sides, and the electric fan passes through heat dissipation channel and reduces the photovoltaic module temperature, and this cleaning device can satisfy clearance and radiating requirement simultaneously to reach the purpose that improves photovoltaic module generated energy and durability.
In one embodiment, the structure of the energy storage box is shown in fig. 6, wherein 9 is an active air intake device in the middle of the side surface; 10 is an active exhaust device, which is arranged at the middle part of the front surface and the top.
Energy storage box heat abstractor: because the energy storage box that secondary battery group constitutes, there is certain thermal runaway risk by the long-term high load operation of secondary battery group. Therefore, active air inlet devices are installed on two sides of the energy storage box, and active exhaust devices are installed on the front side and the upper side of the energy storage box, so that the temperature in the box is reduced, and the risk of thermal runaway of the lithium battery is avoided.
The embodiment of the invention provides a distributed photovoltaic power generation system with secondary batteries, which not only controls the cost, but also increases the stability and the safety of a secondary battery pack. The screening method of the secondary battery in the embodiment 1 is applied to a distributed photovoltaic power generation system, is used for replacing lead-acid batteries, nickel-metal hydride batteries, colloid batteries and the like, and has great significance in the aspects of protecting the environment, saving resources, controlling investment cost and the like. Meanwhile, aiming at the application of the secondary battery pack, the control strategy of the distributed photovoltaic controller is further optimized, the maximum utilization of photovoltaic power generation can be realized, the phenomenon of light abandon is avoided, and the utilization rate of light resources is improved.
Example 3
An embodiment of the present invention provides a terminal, as shown in fig. 7, including: at least one processor 401, such as a CPU (Central Processing Unit), at least one communication interface 403, memory 404, and at least one communication bus 402. Wherein a communication bus 402 is used to enable connective communication between these components. The communication interface 403 may include a Display (Display) and a Keyboard (Keyboard), and the optional communication interface 403 may also include a standard wired interface and a standard wireless interface. The Memory 404 may be a high-speed RAM Memory (Random Access Memory) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The memory 404 may optionally be at least one memory device located remotely from the processor 401. Wherein the processor 401 may perform the screening method of the secondary battery in embodiment 1. A set of program codes is stored in the memory 404, and the processor 401 calls the program codes stored in the memory 404 for executing the screening method of the secondary battery in embodiment 1. The communication bus 402 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus 402 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one line is shown in FIG. 7, but it is not intended that there be only one bus or one type of bus. The memory 404 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviated: HDD) or a solid-state drive (english: SSD); the memory 404 may also comprise a combination of memories of the kind described above. The processor 401 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.
The memory 404 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a flash memory (english: flash memory), a hard disk (english: hard disk drive, abbreviated: HDD) or a solid-state drive (english: SSD); the memory 404 may also comprise a combination of memories of the kind described above.
The processor 401 may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.
The processor 401 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
Optionally, the memory 404 is also used to store program instructions. The processor 401 may call program instructions to implement the screening method of a secondary battery as in embodiment 1 executed in the present application.
An embodiment of the present invention further provides a computer-readable storage medium, where computer-executable instructions are stored on the computer-readable storage medium, and the computer-executable instructions may execute the method for screening a secondary battery in embodiment 1. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. A method of screening secondary batteries, comprising:
classifying the secondary batteries according to the same manufacturer and the assimilation department;
screening out batteries and modules with the same specification from the classified secondary batteries according to a preset standard, and generating the batteries and modules with the same type, the same appearance, the battery production date close to a preset threshold value, and the battery service time close to a preset threshold value;
and (4) carrying out full performance detection on the sampled battery, and carrying out recombination on the secondary battery when the detection is qualified.
2. The screening method of a secondary battery according to claim 1, characterized in that the method further comprises:
and when the detection is unqualified, recovering the waste battery of the detection battery.
3. The screening method of a secondary battery according to claim 1, wherein the sampling battery full performance test includes: the method comprises the following steps of detecting the chemical performance of the battery, detecting the service life of the battery and detecting the safety of the battery.
4. The screening method of a secondary battery according to claim 3, wherein the chemical property test of the battery comprises: detecting a preset chemical property of the secondary battery, wherein the preset chemical property comprises the following steps: capacity, internal resistance, power characteristics.
5. The method for screening secondary batteries according to claim 3, wherein the battery life test comprises: and detecting the service life of the secondary battery in different working conditions.
6. The screening method of a secondary battery according to claim 3, wherein the safety inspection of the battery includes: and detecting the safety characteristics of overcharge, overdischarge and short circuit of the secondary battery.
7. A distributed photovoltaic power generation system in which a secondary battery participates, the system comprising: PV matrix, secondary battery, first switch, second switch, diode, inverter, cleaning device, heat sink, DC load, AC load,
the first end of the PV square array is respectively connected with the first switch and the anode of the diode, and the cathode of the diode is respectively connected with the second switch and the positive pole of the secondary battery;
and the second end of the PV square matrix is respectively connected with the cleaning device, the heat dissipation device, the direct current load, the alternating current load and the negative electrode of the secondary battery.
8. The secondary battery participating distributed photovoltaic power generation system according to claim 7, wherein the operation mode of the distributed photovoltaic power generation system comprises: power overflow mode, saturation mode, power deficit mode, zero power mode.
9. A terminal, comprising: at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to cause the at least one processor to perform the method of screening secondary batteries of any of claims 1-6.
10. A computer-readable storage medium storing computer instructions for causing a computer to execute the screening method of a secondary battery according to any one of claims 1 to 6.
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