CN110783653B - Efficient charging and discharging method adopting segmentation technology - Google Patents
Efficient charging and discharging method adopting segmentation technology Download PDFInfo
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- CN110783653B CN110783653B CN201911067201.2A CN201911067201A CN110783653B CN 110783653 B CN110783653 B CN 110783653B CN 201911067201 A CN201911067201 A CN 201911067201A CN 110783653 B CN110783653 B CN 110783653B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
A high-efficient charge-discharge method adopting cutting technology, divide a battery into N battery units, every battery unit is connected according to the parallel relation, and every battery unit is furnished with the independent charging core head, fetch M battery units among them, M < N, and among M battery units and residual N-M battery units, there are automatic control switches, in the charging stage, when the electric quantity is smaller than the warning electric quantity, for the fast charge mode, the switch is disconnected, the adapter current is distributed to M battery units among them, only charge for said M battery units; when the electric quantity is larger than or equal to the alarm electric quantity, the switch is closed, the adapter current is evenly distributed to each battery unit, and each battery unit is charged simultaneously. The invention adopts the internal segmentation technology, improves the charging rate of the rechargeable battery, shortens the charging time, reduces the damage degree of the battery, prolongs the service life of the battery, and has safety, reliability and strong adaptability.
Description
Technical Field
The invention belongs to the technical field of new energy, relates to a battery charging and discharging technology, and particularly relates to a high-efficiency charging and discharging method adopting a segmentation technology.
Background
With the rapid development of science and technology and networks, electronic products make greater and greater contribution to the human society, and particularly, the appearance of smart phones changes the living modes of human beings such as mobile phone payment, mobile phone navigation, mobile phone browsers, mobile phone videos, mobile phone offices, electronic classrooms and the like. Therefore, the mobile phone is presented to people with a life-activated trend, and becomes a necessity in human life, study and work. However, the power consumption is also increasing with the change of the life style, so that people put higher requirements on the performance of the life style, and the endurance time is improved, but the charging time is also prolonged. The current mobile phone in the market needs more than 2 hours to be fully charged, and a small part of the mobile phone needs 80 minutes to be fully charged, which can not meet the demand of people on quick charging in emergency; and the output current of the mobile power bank is unstable, and the service life of the battery can be shortened by frequent use.
The charging process of the mobile phone is divided into trickle charging, constant-current charging and constant-voltage charging, and the charging current in the constant-current charging process is the charging current which restricts the charging efficiency of the mobile phone from the analysis of the capacity energy distribution and the use condition of the battery, so as to shorten the charging time and theoretically improve the constant-current charging current. However, in the process of charging the lithium battery, if the charging current is too large, the polarization phenomenon is easy to occur, a large amount of gassing is generated inside the battery, and the temperature is increased along with the gassing, so that the aging of the battery is accelerated, and even expansion and explosion can be caused, thereby causing safety problems.
At present, human beings gradually advance to the 5G era, so in order to meet the requirements of the intelligent era and realize the safe and rapid charging design scheme of the mobile phone, the method is a future low-carbon and environment-friendly research direction, and has great application value and practical significance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an efficient charging and discharging method adopting a segmentation technology, aiming at the problem that various rechargeable batteries are slowly charged, the segmentation technology is adopted to improve the charging efficiency, shorten the charging time and prolong the service life of the batteries, and the efficient charging and discharging method is particularly suitable for mobile phone batteries and computer batteries.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-efficient charge-discharge method adopting the cutting technology, divide a battery into N battery units, every battery unit is connected according to the parallel relation, and every battery unit is furnished with the independent charging core head, fetch M battery units among them, M < N, and among M battery units and the remaining N-M battery units, there are automatic control switches, in the charging stage, when the electric quantity is less than the warning electric quantity, for the fast charge mode, the switch is disconnected, the adapter current distributes to M battery units among them, only charge for said M battery units; when the electric quantity is larger than or equal to the alarm electric quantity, the switch is closed, the adapter current is evenly distributed to each battery unit, and each battery unit is charged simultaneously.
The battery is separately packaged according to modules, N identical square-shaped battery cores are arranged in a whole battery, a film is used as a shell of each battery core to separate the battery cores, all the battery cores are sequentially stacked together to form the whole battery, the whole battery is packaged by using a rubber shell, and the battery cores, the circuit board and the rubber shell are fixedly connected by using glue.
The film is an aluminum plastic film or 1060 aluminum foil roll, and the plastic casing has sufficient mechanical strength to protect the cell from mechanical impact.
The adapter comprises 5W (5V-1A), 10W (5V-2A), 20W (5V-4A) and 50W (10V-5A).
The N is 4, the M is 2, and 4 battery units are respectively 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # Battery unit, 1 # Battery unit and 2 # Battery unit and 3 # Battery unit and 4 # Between the battery units, there are provided a switch and a coulometer for detecting the amount of electricity, wherein 1 # Battery unit and 2 # The battery unit is connected with the charging positive electrode, so that the charging voltage is only 1 after the switch is disconnected # Battery unit and 2 # The cell is charged and after the switch is closed, is simultaneously 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery cell is charged.
1 mentioned above # Battery unit and 2 # Battery unit and 3 # Battery unit and 4 # And a switch and a coulometer for detecting electric quantity are arranged between the battery units, and the switch is a signal induction switch (such as a current induction switch, a voltage induction switch, an infrared induction switch and the like). When the coulometer detects the electricity quantity asWhen the electricity quantity is alarmed, an alarm signal (such as a sound signal, a light signal and the like) is sent out, a special sensor (such as a sound sensitive sensor, a photosensitive sensor and the like) in the induction switch detects the alarm signal, the internal load is automatically turned on, the induction switch is turned off, and only 1 # Battery unit and 2 # The battery unit is switched on; when the coulometer detects that the electric quantity is more than 50%, the system automatically closes the internal load, the inductive switch is connected, 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery cells are turned on simultaneously.
Compared with the prior art, the invention adopts the internal segmentation technology, improves the charging rate of the rechargeable battery, shortens the charging time, reduces the damage degree of the battery, prolongs the service life of the battery, is safe and reliable, has strong adaptability, and provides important ideas and directions for improving the charging rate of the rechargeable battery.
Drawings
Fig. 1 is a schematic view of the internal structure of the battery of the present invention.
Fig. 2 is a schematic diagram of a battery cell connection circuit according to an embodiment of the present invention.
Fig. 3 is a schematic view of the connection of the charging core head and the adapter of the present invention.
Fig. 4 is a schematic structural diagram of a charging core head of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings and examples.
The invention relates to a high-efficiency charging and discharging method adopting a segmentation technology, which is characterized in that a battery is divided into N parts of battery units, all the battery units are connected in parallel, each part of battery unit is provided with an independent charging core head, M parts of battery units are taken, M is less than N, an automatic control switch is arranged between the M parts of battery units and the rest N-M parts of battery units, and in a charging stage, when the electric quantity is less than the alarm electric quantity, a quick charging mode is adopted, the switch is disconnected, the adapter current is distributed to the M parts of battery units, and only the M parts of battery units are charged; when the electric quantity is larger than or equal to the alarm electric quantity, the switch is closed, the adapter current is evenly distributed to each battery unit, and each battery unit is charged simultaneously. In the discharging process, when a certain battery unit is damaged, the battery cannot stop working, other battery units can also continue to discharge, the modular management and maintenance of the battery are realized, and the adaptability of the battery is improved.
In the embodiment of the present invention, when N is 4 and M is 2, the principle is the same when other values are taken.
As shown in FIG. 1, in the battery preparation process, the batteries are divided into four parts according to modules, and four identical square-shaped battery cores are respectively 1 in one battery # Battery cells 1, 2 # Cells 2, 3 # Battery cells 3, 4 # The battery cell 4 is separated by taking the film 5 as a shell of the battery cell, each battery cell and the film form a battery unit, all the battery cells are stacked together to form a whole battery, the whole battery is packaged together with the circuit board 7 by using a rubber shell 6, and the battery cells, the circuit board 7 and the rubber shells are connected and fixed by using 502 rubber.
The film 5 can be an aluminum plastic film or 1060 aluminum foil roll, having the following properties: the battery has the advantages of extremely high barrier property, good formability, thickness less than 0.1mm, good stability (the finished battery is tightly sealed after being soaked in electrolyte for twenty days without air blowing phenomenon), puncture resistance and certain electrical insulation property. The gel casing has sufficient mechanical strength to protect the battery from mechanical impact. The preparation process of each battery cell is the same as that of the traditional lithium battery, namely the procedures of coating, rolling, slitting, ultra-welding of the tabs, rubberizing and roll core are adopted, and finally, the battery cells are placed into a shell and packaged.
Referring to fig. 2, a schematic diagram of a connection circuit of a battery unit according to the present invention is shown, in which the wiring portion is integrated into a circuit board 7. 4 parts of the battery cells are 1 respectively # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # Battery unit, 1 # Battery unit and 2 # Battery unit and 3 # Battery unit and 4 # Between the battery units, a switch and a coulometer for detecting electric quantity are arranged, wherein 1 # Battery unit and 2 # The battery unit is connected with the charging positive pole, so that the voltage is only 1 after the switch is disconnected # Battery unit and 2 # Battery cell chargerElectric, and after the switch is closed, simultaneously 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery cell is charged.
Further, the switch may be a signal sensing switch (e.g., a current sensing switch, a voltage sensing switch, an infrared sensing switch, etc.). When coulometer detects that the electric quantity is alarm electric quantity, it sends out alarm signal (such as sound signal and light signal), and the special sensor (such as sound sensitive sensor and photosensitive sensor) in the inductive switch detects the signal, and automatically turns on its internal load, and the inductive switch is turned off, and only 1 # Battery unit and 2 # The battery unit is switched on; when the coulometer detects that the electric quantity is more than 50%, the system automatically closes the internal load, the inductive switch is connected, 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery cells are turned on simultaneously.
In the embodiment of the invention, the alarm electric quantity is set to be 50%, and when the coulometer detects that the electric quantity of the battery is less than 50% during charging, the switch is switched off and only has 1 # Battery unit, 2 # The battery unit is located the charging path, and charging current grow, and the charge rate improves, satisfies the demand that needs the speed charge under emergency. When the coulometer detects that the battery capacity is more than 50%, the switch is closed, 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery units are all positioned in the charging path, the current is evenly distributed, the current distributed to each battery unit is reduced, and the damage degree to the battery is reduced; in addition, 4 battery units are charged simultaneously, the time for fully charging the whole battery is equal to the time for fully charging one battery unit, the charging efficiency is improved, and meanwhile, the damage to the battery is reduced.
Taking an adapter parameter of 20W (5V-4A) as an example, in the charging process, the voltage of each battery cell is 5V and is shunted to 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The current of the battery unit is 1A; when the electric quantity is less than the alarm electric quantity, the current is only distributed to 1 # Battery unit, 2 # On the battery cell, 1 # Battery sheetYuan, 2 # The voltage of the battery cell is 5V and the current is 2A because the relationship of the charging time, the current and the battery capacity satisfies the relationship: charge time is capacity/current. Therefore, the current distributed to each battery becomes large, the capacity is constant, the charging time is reduced, that is, the charging rate is increased. When the electricity is 50% or more, the current is shunted to 1 # Battery unit, 2 # On the battery cell, 1 # Battery unit, 2 # On the battery unit, the voltage of each cell is 5V, and the current is 1A, 1 # Battery unit, 2 # On the battery cell, 1 # Battery unit, 2 # The battery cells are charged simultaneously.
Fig. 3 is a schematic diagram of the charging core 8 of the present invention, an adapter USB interface and corresponding connecting wires, and fig. 4 is a schematic diagram of the charging core 8 of the present invention. Pin D + is connected to green line, representing positive data port; pin D-is connected with a white line and represents that a data port is negative; the pin VBUS is connected with a red line and represents a positive power supply end; the pin GNG is connected with a black line and represents a zero line; ID is a detection end; and respectively welding the black, green, red and white four wires on the corresponding pins, and short-circuiting the ID and the GNG to ensure the maximum current charging. After the welding is checked, hot melt adhesive or insulating tape is put on the metal shell to prevent short circuit between wires or with the metal shell, and then the metal shell of the USB interface is installed.
Due to the structure, the invention can adopt an adapter with larger power, and the charging parameters of the high-rate rechargeable battery are as follows:
power supply output voltage: 100V-240V; frequency: 50/60 Hz; charger voltage-current: 5V-1A, 5V-2A, 5V-4A, 10V-5A; charging power: 5W, 10W, 20W and 50W.
The following are several charging embodiments of the present invention.
Example 1
1) A 2000mAh cell.
2) A5V-1A power adapter is adopted to charge the 2000mAh battery, and the theoretical calculation shows that 120 minutes is needed for charging the 2000mAh battery.
Example 2
1) One 2000mAh battery was divided into 2 smaller cells (1000mAh +1000 mAh).
2) A5V-2A (1A +1A) power adapter is adopted, 2 parts of 1000mAh +1000mAh battery units are charged simultaneously by utilizing a shunting principle, and the 1000mAh +1000mAh (2000mAh) battery can be charged only for 60 minutes through theoretical calculation.
Example 3
1) A 2000mAh battery was divided into 4 smaller cells (500mAh +500 mAh).
2) A5V-4A (1A +1A +1A +1A) power adapter is adopted, 4 parts of 500mAh +500mAh +500mAh +500mAh battery units are charged simultaneously by utilizing a shunting principle, and the theoretical calculation shows that only 30 minutes are needed for completely charging 500mAh +500mAh +500mAh (2000mAh) batteries.
Example 4
1) A 2000mAh battery was divided into 4 smaller cells (500mAh +500 mAh).
2) When the battery capacity is less than the alarm capacity, the 5V-4A power adapter is adopted, and the shunting principle (2A +2A) is utilized to carry out 1 # Cell unit 500mAh, 2 # The battery units 500mAh are charged simultaneously, and only 7.5 minutes is needed when the 50% of the electricity quantity of the batteries which are fully charged by 500mAh +500mAh is calculated by theory. When the battery capacity is more than 50%, 1 is paired by using a shunting principle (1A +1A +1A +1A) # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # 250mAh +250mAh +500mAh +500mAh of the battery unit are charged simultaneously, the theoretical calculation shows that 30 minutes is needed for charging 250mAh +250mAh +500mAh +500mAh, so that only 37.5 minutes is needed for charging the whole battery of 500mAh +500mAh +500mAh (2000mAh), the requirement of quick charge is met, and the damage to the battery is reduced.
Example 5
1) A 4000mAh cell.
2) A5V-1A power adapter is adopted to charge a 4000mAh battery, and the theoretical calculation shows that 240 minutes is needed when the 2000mAh battery is charged.
Example 6
1) One 4000mAh battery was divided into 2 smaller cells (2000mAh +2000 mAh).
2) A5V-2A (1A +1A) power adapter is adopted, 2 parts of 2000mAh +2000mAh battery units are charged simultaneously by utilizing a shunt principle, and the theoretical calculation shows that the charging of 2000mAh +2000mAh (4000mAh) batteries is completed only in 120 minutes.
Example 7
1) One 4000mAh cell was divided into 4 smaller cells (1000mAh +1000 mAh).
2) A5V-4A (1A +1A +1A +1A) power adapter is adopted, 4 battery units of 1000mAh +1000mAh +1000mAh are charged simultaneously by utilizing a shunt principle, and the fact that the 1000mAh +1000mAh +1000mAh +1000mAh (4000mAh) battery is fully charged through theoretical calculation only needs 60 minutes.
Example 8
1) One 4000mAh cell was divided into 4 smaller cells (1000mAh +1000 mAh).
2) When the battery capacity is less than the alarm capacity, the 5V-4A power adapter is adopted, and the shunting principle (2A +2A) is utilized to carry out 1 # Battery cell 1000mAh, 2 # The 1000mAh battery units are charged simultaneously, and only 15 minutes is needed for calculating 50% of electricity of the 1000mAh and 1000mAh battery. When the battery capacity is more than 50%, 1 is paired by using a shunting principle (1A +1A +1A +1A) # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # 500mAh +500mAh +1000mAh +1000mAh of the battery unit are charged simultaneously, and the theoretical calculation shows that only 60 minutes are needed for charging the 500mAh +500mAh +1000mAh +1000mAh battery, so that only 75 minutes are needed for charging the whole 1000mAh +1000mAh +1000mAh (4000mAh) battery, the requirement of quick charging is met, and the damage to the battery is reduced.
Therefore, the number of the battery cores in the battery is changed, and the parallel structure is adopted, so that the current is evenly distributed to each battery core, the charging rate of the battery is improved, and the service life of the battery is prolonged.
The above description is only one embodiment of the rechargeable battery of the present invention, and not all or only one embodiment of the rechargeable battery, and any equivalent alterations of the written technical solutions through reading the present invention are all covered by the claims of the present invention.
Claims (5)
1. A high-efficiency charging method adopting a segmentation technology is characterized in that a battery is divided into N battery units, the battery units are connected in parallel, each battery unit is provided with an independent charging core head, M battery units are taken, M is less than N, an automatic control switch is arranged between the M battery units and the rest N-M battery units, in a charging stage, when the electric quantity is less than the alarm electric quantity, a quick charging mode is adopted, the switch is disconnected, the adapter current is distributed to the M battery units, and only the M battery units are charged; when the electric quantity is larger than or equal to the alarm electric quantity, the switch is closed, the adapter current is evenly distributed to each battery unit, and each battery unit is charged simultaneously.
2. The efficient charging method using the segmentation technology as claimed in claim 1, wherein during the battery preparation process, the batteries are separately packaged according to modules, N identical square-shaped battery cores are installed in a whole battery, the battery cores are separated by using a film as the shells of the battery cores, all the battery cores are stacked together in sequence to form a whole battery, the whole battery is packaged by using a plastic shell, and the battery cores, the circuit board and the plastic shell are connected and fixed by using glue.
3. A method for efficient charging using singulation technology as recited in claim 2, wherein the thin film is an aluminum plastic film or 1060 aluminum foil roll, and the plastic case has sufficient mechanical strength to protect the battery from mechanical impact.
4. The efficient charging method using segmentation technology as claimed in claim 1, wherein the adapter has parameters of 5V-1A, 5V-2A, 5V-4A or 10V-5A.
5. The efficient charging method using the dividing technique as claimed in claim 1, wherein the number of the N =4, M =2, and 4 battery cells is 1, respectively # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # Battery unit, 1 # Battery unit and 2 # Battery sheetYuan and 3 # Battery unit and 4 # Between the battery units, there are provided a switch and a coulometer for detecting the amount of electricity, wherein 1 # Battery unit and 2 # The battery unit is connected with the charging positive pole, so that the voltage is only 1 after the switch is disconnected # Battery unit and 2 # The cell is charged and after the switch is closed, is simultaneously 1 # Battery unit, 2 # Battery unit, 3 # Battery unit, 4 # The battery cell is charged.
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