CN106849218B - mobile phone rechargeable battery - Google Patents
mobile phone rechargeable battery Download PDFInfo
- Publication number
- CN106849218B CN106849218B CN201611247278.4A CN201611247278A CN106849218B CN 106849218 B CN106849218 B CN 106849218B CN 201611247278 A CN201611247278 A CN 201611247278A CN 106849218 B CN106849218 B CN 106849218B
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- mos tube
- battery
- integrated circuit
- charging
- mobile phone
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a mobile phone rechargeable battery, which comprises a battery core and a mobile phone battery protection board, wherein the battery core is connected with the mobile phone battery protection board, and at least one charging port and one discharging port are respectively arranged on the mobile phone battery protection board; the charging port is correspondingly connected with the battery cell and is used for charging the battery cell; the discharge port is correspondingly connected with the battery cell and used for discharging the battery cell. Through increasing the charging port on the mobile phone battery protection board, and set up charging port and discharge port respectively, increase charging circuit's copper foil width, also increased the contact area of pin and charging circuit of plug connector in the charging port for rechargeable battery current capacity reduces the heating, reduces the benefit of internal resistance.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a mobile phone rechargeable battery.
Background
The mobile phone battery is an energy storage tool for providing power for the mobile phone, and charging and discharging loops on a printed circuit board in the existing mobile phone built-in battery are same, but with the gradual popularization of the fast charging technology, the traditional charging and discharging loops of the mobile phone battery share a PCB (printed circuit board) with one port, so that the requirements of fast charging performance are difficult to meet due to the problems of narrow heavy current copper foil, high internal resistance, serious heating and the like.
At present, the market requires short-time full charge, saves charging time, and causes the current to be larger and larger when charging is required during design.
Disclosure of Invention
The invention mainly aims to provide a quick-charging mobile phone rechargeable battery.
The invention provides a mobile phone rechargeable battery, which comprises a battery core and a mobile phone battery protection board, wherein the battery core is connected with the mobile phone battery protection board, and at least one charging port and one discharging port are respectively arranged on the mobile phone battery protection board; the charging port is correspondingly connected with the battery cell and is used for charging the battery cell; the discharge port is correspondingly connected with the battery cell and used for discharging the battery cell.
Further, two charging ports are arranged on the mobile phone battery protection plate, and the charging ports are located between the anode and the cathode of the battery core.
Further, the mobile phone battery protection board is provided with a protection circuit; the charging port and the discharging port are connected with the protection circuit, and the protection circuit is used for protecting the charging and discharging of the battery cell.
Further, the protection circuit comprises an integrated circuit and an MOS tube, the battery cell is connected with the integrated circuit, the integrated circuit is connected with the MOS tube, the negative electrode of the battery cell is electrically connected with the MOS tube, and the MOS tube is connected with the charging port and the discharging port;
the integrated circuit is provided with a numerical range for detecting the voltage difference between two ends of the MOS tube, and the state of the MOS tube is judged according to the voltage difference.
Further, the integrated circuit controls the switching state of the MOS tube by detecting the voltage difference between two ends of the MOS tube;
when the integrated circuit detects that the voltage difference between two ends of the MOS tube is smaller than or equal to the value of the voltage difference set by the integrated circuit, the integrated circuit controls the MOS tube to work normally;
when the integrated circuit detects that the voltage difference between two ends of the MOS tube is larger than the value of the voltage difference set by the integrated circuit, the integrated circuit controls the MOS tube to be disconnected.
Further, the MOS tube comprises a charging MOS tube and a discharging MOS tube, and the charging MOS tube and the discharging MOS tube are connected in series with the negative electrode of the battery cell;
the integrated circuit judges the switch states of the charging MOS tube and the discharging MOS tube through the voltage of the battery core,
further, the integrated circuit controls the switch states of the charging MOS tube and the discharging MOS tube through the voltage of the battery cell;
when the battery core is overcharged, the integrated circuit controls the charging MOS tube to be disconnected;
when the battery core is overdischarged, the integrated circuit controls the discharge MOS tube to be disconnected.
Further, when the battery cell is charged, the integrated circuit controls the charging MOS tube to be disconnected when detecting that the voltage difference between two ends of the MOS tube is larger than the value of the voltage difference set by the integrated circuit;
when the battery cell discharges, the integrated circuit controls the discharge MOS tube to be disconnected when detecting that the voltage difference between two ends of the MOS tube is larger than the value of the voltage difference set by the integrated circuit.
Further, the mobile phone battery protection board comprises a current limiting resistor, one end of the current limiting resistor is connected with the integrated circuit, the other end of the current limiting resistor is connected between the MOS tube and the electric connection of the charging port and the discharging port, and the current limiting resistor is used for limiting the current of the protection circuit.
Further, the mobile phone battery protection board further comprises a fuse or a PTC thermistor, one end of the fuse or the PTC thermistor is connected with the battery cell, and the other end of the fuse or the PTC thermistor is connected with the charging port and the discharging port.
According to the mobile phone rechargeable battery, the charging port is added on the mobile phone battery protection board, and the charging port and the discharging port are respectively arranged, so that the width of the copper foil of the charging circuit is increased, the contact area between the pin of the plug connector in the charging port and the charging circuit is also increased, the current passing capacity of the rechargeable battery is increased, and the charging time is shortened.
Drawings
Fig. 1 is a schematic charge and discharge diagram of a rechargeable battery of a mobile phone according to an embodiment of the invention;
FIG. 2 is a block diagram of a rechargeable battery of a mobile phone according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a rechargeable battery of a mobile phone according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mobile phone battery protection plate of a mobile phone rechargeable battery according to an embodiment of the invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-4, in one embodiment of the present invention, a rechargeable battery for a mobile phone is provided, which includes a battery core 1 and a battery protection board 11 for the mobile phone, wherein the battery core 1 is connected with the battery protection board 11 for the mobile phone, and at least one charging port 4 and one discharging port 3 are respectively provided on the battery protection board 11 for the mobile phone; the charging port 4 is correspondingly connected with the battery cell 1 and is used for charging the battery cell 1; the discharge port 3 is correspondingly connected with the battery cell 1 and is used for discharging the battery cell 1. In this embodiment, the charging port 4 is correspondingly connected to the charging circuit 5 to charge the battery cell 1, the battery cell 1 is connected to the discharging circuit 2, and the discharging circuit 2 is correspondingly connected to the discharging port 3 to realize the discharging of the battery cell 1. Through setting up charging port 4 and discharge port 3 respectively on mobile phone battery protection board 11, can realize quick charge through increasing the copper foil width that charges, increase the through-flow ability of electric current.
The cell protection board of the mobile phone is also called a Printed Circuit Board (PCB), which is also called a printed circuit board, is cut into a certain size by taking an insulating board as a base material, is at least attached with one conductive pattern, is provided with holes for replacing a chassis of the electronic components of the traditional device, realizes interconnection between the electronic components, and is used as an important electronic component as a support body of the electronic components.
As shown in fig. 4, in this embodiment, the mobile phone rechargeable battery is an energy storage tool for providing power for the mobile phone, the charging port 4 and the discharging port 3 are different ports and are respectively disposed on the mobile phone rechargeable battery protection board 11, the charging port 4 and the discharging port 3 of the mobile phone battery protection board are respectively disposed between the positive electrode and the negative electrode (b+, B-) of the battery cell 1, and the battery cell 1 of the mobile phone rechargeable battery can be charged by connecting the power supply for providing power through the charging port 4; the discharging port 3 is connected with a mobile phone power utilization component, and can be used for discharging the battery core 1 of a mobile phone rechargeable battery. Different ports are adopted for charging and discharging, the charging port 4 and the discharging port 3 are separated, the width of copper foil connected with the charging port 4 is increased, and the current passing capacity is increased.
As shown in fig. 4, in the present embodiment, the mobile phone battery protection board 11 is provided with two charging ports 4, and the charging ports 4 are located between the positive and negative electrodes (b+, B-) of the battery cell 1. One pin of the charging port 4 is connected with the positive electrode (B+) of the battery core 1, and the other pin is connected with the negative electrode (B-) of the battery core 1, and the charging port 4 is arranged between the positive electrode (B+ and the negative electrode (B-) of the battery core 1, so that a current loop can be shortened. By adding the charging port 4 on the mobile phone battery protection plate 11, when the mobile phone rechargeable battery is charged, the width of the copper foil of the charging circuit can be increased, the contact area between the pin of the plug connector in the charging port and the charging circuit is also increased, and the time required by full charge is saved.
As shown in fig. 2 to 3, in the present embodiment, the mobile phone battery protection board 11 is provided with a protection circuit 6; the charging port 4 and the discharging port 3 are connected with a protection circuit 6, and the protection circuit 6 is used for protecting the charging and discharging of the battery cell 1. The protection circuit 6 comprises an integrated circuit 8 and an MOS tube 9, the integrated circuit 8 is connected with the battery cell 1, the MOS tube 9 is connected with the integrated circuit 8, the MOS tube 9 is connected with the negative electrode of the battery cell 1, the MOS tube 9 is connected with the charging port 4 and the discharging port 3, the integrated circuit 8 is provided with a numerical range for detecting the voltage difference between two ends of the MOS tube 9, and the state of the MOS tube 9 is judged through the voltage difference. The integrated circuit 8 controls the switching state of the MOS tube 9 by detecting the voltage difference between two ends of the MOS tube 9; when the integrated circuit 8 detects that the voltage difference between the two ends of the MOS tube 9 is smaller than or equal to the value of the voltage difference set by the integrated circuit 8, the integrated circuit 8 controls the MOS tube 9 to work normally; when the integrated circuit 8 detects that the voltage difference of the MOS transistor 9 is greater than the voltage difference set by the integrated circuit 8, the integrated circuit 8 controls the MOS transistor 9 to be turned off.
In this embodiment, the MOS transistor 9 includes a charging MOS transistor and a discharging MOS transistor, which are connected in series to the negative electrode of the battery cell 1; the integrated circuit 8 judges the switch states of the charging MOS tube and the discharging MOS tube through the voltage of the battery core 1. The integrated circuit 8 controls the switching states of the charging MOS tube and the discharging MOS tube through the voltage of the battery cell 1; when the battery cell 1 is overcharged, the integrated circuit 8 controls the charging MOS tube to be disconnected; when the battery cell 1 is overdischarged, the integrated circuit 8 controls the discharge MOS tube to be disconnected. When the battery cell 1 is charged, the integrated circuit 8 controls the charging MOS tube to be disconnected when the integrated circuit 8 detects that the voltage difference at two ends of the discharging MOS tube 9 is larger than the voltage difference value set by the integrated circuit 8; when the battery core 1 discharges, the integrated circuit 8 controls the discharge MOS tube to be disconnected when the integrated circuit 8 detects that the voltage difference between two ends of the discharge MOS tube is larger than the voltage difference value set by the integrated circuit 8.
In the present embodiment, the mobile phone battery protection board 11 is mainly an integrated circuit board for protecting a rechargeable battery (generally referred to as a lithium battery). The lithium battery (rechargeable) needs protection due to its own characteristics, and since the material of the lithium battery itself determines that it cannot be overcharged, overdischarged, overcurrent, short-circuited and ultra-high temperature charge and discharge, a lithium battery module is generally provided with a protection board including a sampling resistor and a current protector, which are mainly used for overcharging, overdischarging, overcurrent, short-circuited and ultra-high temperature charge and discharge protection of the lithium battery.
In this embodiment, the charging MOS tube and the discharging MOS tube are connected in series in the circuit, and the integrated circuit 8 monitors and controls the voltage of the battery cell 1, and when the voltage of the battery cell 1 rises to a preset maximum value, the charging MOS tube is disconnected to stop charging. To prevent malfunction, a delay capacitor is provided on the integrated circuit 8. When the battery cell 1 is in a discharging state and the voltage of the battery cell 1 is reduced to a preset minimum value, the discharging MOS tube is disconnected, and power supply to a load is stopped. Meanwhile, the integrated circuit 8 can judge the state of the MOS tube during charging or discharging through the voltage drop change of the MOS tube 9. When a larger current flows through the load, the corresponding MOS tube is controlled to be disconnected. When the battery cell 1 is short-circuited, the integrated circuit 8 controls the corresponding disconnection in the MOS tube 9. The integrated circuit 8 is internally provided with a high-precision voltage detection circuit and a delay circuit, so that the overcharge, overdischarge and overcurrent protection of the (rechargeable) battery pack can be realized, and the function of protecting the rechargeable battery of the mobile phone by the protection circuit 6 is better realized; 2N-type MOS tubes are arranged in the MOS tube and are equivalent to switches, and when the battery cell 1 is charged, the integrated circuit 8 detects the voltage difference to control the switch of the charging MOS tube, so that the charging protection function is realized; when the battery cell 1 discharges, the integrated circuit 8 detects the voltage difference to control the switch of the discharge MOS tube, thereby playing a role of discharge protection.
In this embodiment, two charging ports 4 and a discharging port 3 are disposed on the mobile phone battery protection board 11 to separate charging and discharging loops, and the discharging loop flows from the battery core 1 to the discharging port 3 through the protection circuit 6 for discharging the battery core 1; the charging circuit is connected with two charging ports 4 through a protection circuit 6 to the battery cell 1 for charging the battery cell 1. The two charging ports 4 and one discharging port 3 are arranged between the anode and the cathode of the battery cell 1, the distance between the charging circuit and the discharging circuit is shortened, the two charging ports 4 are increased, the width of the copper foil of the main circuit is enlarged, and meanwhile, the contact area between the pins in the connector of the charging port 4 and the charging circuit is also increased. The current flowing capacity of the rechargeable battery is increased, and the problems of high internal resistance, serious heat generation and the like are solved.
The mobile phone rechargeable battery adopts a lithium battery, the protection function of the lithium battery is usually completed by a protection circuit board and a PTC current device in a cooperative way, the protection board is composed of an electronic circuit, the voltage of the battery core and the current of a charging and discharging loop can be monitored accurately at any time in an environment of-40 ℃ to +85 ℃, and the on-off of the current loop is controlled immediately; PTC prevents the battery from being damaged badly under high temperature environment. The protection plate typically includes a control Integrated Circuit (IC) and MOS switches. The control Integrated Circuit (IC) controls the MOS switch to be turned on under all normal conditions, so that the battery core is communicated with an external circuit, and when the voltage or the loop current of the battery core exceeds a specified value, the control Integrated Circuit (IC) immediately controls the MOS switch to be turned off (tens of milliseconds), so that the safety of the battery core is protected.
In this embodiment, the mobile phone battery protection board 11 includes a current limiting resistor 14, one end of the current limiting resistor 14 is connected to the integrated circuit 8, the other end is connected between the MOS tube 8 and the electrical connection between the charging port 4 and the discharging port 3, and the current limiting resistor 14 is used for limiting the current of the protection circuit 6. The integrated circuit 8 is provided with a first test point 12 electrically connected between the MOS tube 9 and the cathode of the battery cell 1, a second test point 13 electrically connected with the MOS tube 9 and the charging port 4 and the discharging port 3, and a current limiting resistor 14 arranged between the second test point 13 and the integrated circuit, wherein the current limiting resistor 14 is used for controlling the current flowing when the mobile phone rechargeable battery is reversely connected (connected and discharged) and has the current limiting function. The mobile phone rechargeable battery also comprises a fuse, one end of the fuse is connected with the battery cell 1, and the other end of the fuse is connected with the charging port 4 and the discharging port 3. In another embodiment, the fuse may be replaced by a PTC thermistor 7, where one end of the PTC thermistor 7 is connected to the battery cell 1, and the other end is connected to the charging port 4 and the discharging port 3. And the fuse or the independent component of the PTC thermistor is adopted, and the independent current flows through the fuse or the independent component of the PTC thermistor to protect the component.
The PTC thermistor is a positive temperature coefficient thermistor, is a semiconductor resistor with temperature sensitivity, and has a resistance value which is increased stepwise along with the temperature rise when a certain temperature (Curie temperature) is exceeded, and the higher the temperature is, the larger the resistance value is; PTC in a battery product can prevent high-temperature discharge of the battery and unsafe occurrence of large current. In this embodiment, the PTC thermistor is a very important component in the cell phone rechargeable battery pack product, and plays an important role in the safety of the battery, and its own performance and quality are important factors for the performance and quality of the battery pack.
As shown in fig. 1-4, in a specific embodiment, the positive electrode of the battery cell 1 is connected to one end of the integrated circuit 8 and one end of the PTC thermistor, where the integrated circuit 8 is connected to the MOS tube 9, the MOS tube 9 includes a discharge MOS tube and a charge MOS tube, the integrated circuit 8 is connected to the discharge MOS tube and the charge MOS tube respectively, the integrated circuit 8 can detect the voltage of the battery cell 1, when the voltage of the battery cell 1 is read to be too high, it is determined that the battery cell 1 is overcharged, at this time, the charge circuit is abnormal, and the integrated circuit 8 controls the charge MOS tube to be disconnected; when the voltage of the battery cell 1 is read to be too low, the battery cell 1 is judged to be overdischarged, at the moment, a discharging circuit is abnormal, and the integrated circuit 8 controls the discharging MOS tube to be disconnected; the integrated circuit 8 judges whether the charging circuit 4 or the discharging circuit 3 works normally or not by detecting the voltage difference between the first test point 12 and the second test point 13; the current limiting resistor 14 is used for controlling the current flowing when the rechargeable battery of the mobile phone is reversely connected (connected and discharged) and playing a role in limiting current, and when the voltage difference between the first test point 12 and the second test point 13 is larger than the voltage difference value set by the integrated circuit 8, the integrated circuit 8 controls the corresponding charging MOS tube or discharging MOS tube to be disconnected; the other end of the PTC thermistor 7 is connected with the charging port 4 and the discharging port 3, when the discharging port 3 is connected with a mobile phone power utilization component, the positive electrode of the battery cell 1 is connected with one end of the PTC thermistor 7, the other end of the PTC thermistor 7 is connected with the discharging port 3, the integrated circuit 8 judges and controls the switch of a discharging MOS tube by connecting the voltage of the battery cell 1 read by the battery cell 1, the discharging port 3 is connected with the MOS tube 9, and the MOS tube 9 is connected with the negative electrode of the battery cell 1 for discharging the battery cell 1; when the charging port 4 is connected with a power supply for supplying electric energy, one end of the charging port 4 connected with the PTC thermistor 7 is connected with the other end of the PTC thermistor 7, the positive electrode of the battery cell 1 is connected with the integrated circuit 8, the switch of the charging MOS tube 9 is judged and controlled by reading the voltage of the battery cell 1, the negative electrode of the battery cell 1 is connected with the MOS tube 9, the MOS tube 9 is connected with the charging port 4, and the P-and P+ of the charging port 4 form a complete charging loop which can be used for charging the battery cell 1.
The assembly space of the rechargeable battery of the mobile phone is smaller and smaller, and if the electrical performance is required to be met, the board layer needs to be added, but the cost is increased by adding the board layer. If the mobile phone battery protection board with different charging and discharging ports is adopted, the problems of insufficient current passing capability, high internal resistance, serious heat generation, temperature rise and the like can be solved in a limited space and fewer board layers.
According to the mobile phone rechargeable battery, the charging port is added on the mobile phone battery protection board, and the charging port and the discharging port are respectively arranged, so that the width of the copper foil of the charging circuit is increased, the contact area between the pin of the plug connector in the charging port and the charging circuit is increased, the current passing capability of the rechargeable battery is accelerated, the heating is reduced, and the internal resistance is reduced.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (9)
1. The mobile phone rechargeable battery is characterized by comprising a battery core and a mobile phone battery protection board, wherein the battery core is connected with the mobile phone battery protection board, and at least one charging port and one discharging port are respectively arranged on the mobile phone battery protection board;
the charging port is correspondingly connected with the battery cell and is used for charging the battery cell;
the discharge port is correspondingly connected with the battery cell and used for discharging the battery cell;
the mobile phone battery protection board is provided with two charging ports and a discharging port, one pin of the charging port is connected with the positive electrode of the battery cell, one pin is connected with the negative electrode of the battery cell, and two charging ports and one discharging port are positioned between the positive electrode and the negative electrode of the battery cell.
2. The mobile phone rechargeable battery according to claim 1, wherein the mobile phone battery protection board is provided with a protection circuit;
the charging port and the discharging port are connected with the protection circuit, and the protection circuit is used for protecting the charging and discharging of the battery cell.
3. The mobile phone rechargeable battery according to claim 2, wherein the protection circuit comprises an integrated circuit and a MOS tube, the battery cell is connected with the integrated circuit, the integrated circuit is connected with the MOS tube, the negative electrode of the battery cell is connected with the MOS tube, and the MOS tube is connected with the charging port and the discharging port;
the integrated circuit is provided with a numerical range for detecting the voltage difference between two ends of the MOS tube, and the state of the MOS tube is judged according to the voltage difference.
4. The rechargeable battery of claim 3, wherein said integrated circuit controls the on-off state of said MOS tube by detecting the voltage difference across said MOS tube;
when the integrated circuit detects that the voltage difference between two ends of the MOS tube is smaller than or equal to the value of the voltage difference set by the integrated circuit, the integrated circuit controls the MOS tube to work normally;
when the integrated circuit detects that the voltage difference between two ends of the MOS tube is larger than the value of the voltage difference set by the integrated circuit, the integrated circuit controls the MOS tube to be disconnected.
5. The rechargeable battery of claim 4, wherein the MOS tube comprises a charging MOS tube and a discharging MOS tube, and the charging MOS tube and the discharging MOS tube are connected in series with the negative electrode of the battery cell;
and the integrated circuit judges the switch states of the charging MOS tube and the discharging MOS tube through the voltage of the battery cell.
6. The rechargeable battery of claim 5, wherein said integrated circuit controls the switching states of said charge MOS tube and discharge MOS tube by the voltage of said cell;
when the battery core is overcharged, the integrated circuit controls the charging MOS tube to be disconnected;
when the battery core is overdischarged, the integrated circuit controls the discharge MOS tube to be disconnected.
7. The rechargeable battery of claim 5, wherein when the integrated circuit detects that the voltage difference between two ends of the MOS tube is larger than the voltage difference set by the integrated circuit, the integrated circuit controls the charging MOS tube to be disconnected;
when the battery cell discharges, the integrated circuit controls the discharge MOS tube to be disconnected when detecting that the voltage difference between two ends of the MOS tube is larger than the value of the voltage difference set by the integrated circuit.
8. The mobile phone rechargeable battery according to claim 3, wherein the mobile phone battery protection plate comprises a current limiting resistor, one end of the current limiting resistor is connected with the integrated circuit, the other end of the current limiting resistor is connected between the MOS tube and the electrical connection of the charging port and the discharging port, and the current limiting resistor is used for limiting the current of the protection circuit.
9. The mobile phone charging battery of claim 1, wherein the mobile phone battery protection plate further comprises a fuse or a PTC thermistor, one end of the fuse or the PTC thermistor is connected to the battery cell, and the other end is connected to the charging port and the discharging port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247278.4A CN106849218B (en) | 2016-12-29 | 2016-12-29 | mobile phone rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611247278.4A CN106849218B (en) | 2016-12-29 | 2016-12-29 | mobile phone rechargeable battery |
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| Publication Number | Publication Date |
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| CN106849218A CN106849218A (en) | 2017-06-13 |
| CN106849218B true CN106849218B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611247278.4A Active CN106849218B (en) | 2016-12-29 | 2016-12-29 | mobile phone rechargeable battery |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964188B (en) * | 2018-07-24 | 2020-12-18 | 南京车链科技有限公司 | Mobile terminal charging control circuit, charging circuit and electronic equipment |
| CN111969168B (en) * | 2019-05-20 | 2023-03-17 | Oppo广东移动通信有限公司 | Battery pack and electronic device |
| CN111277026B (en) * | 2020-05-08 | 2020-08-14 | 北京小米移动软件有限公司 | Charging and discharging circuit system |
| KR20240004355A (en) | 2021-03-31 | 2024-01-11 | 에노빅스 코오퍼레이션 | Electrode assembly including current limiter, secondary battery having such electrode assembly, and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814764A (en) * | 2009-12-11 | 2010-08-25 | 葛崇举 | Lithium battery power supply system special for direct current electric wrench |
| CN103532103A (en) * | 2013-10-08 | 2014-01-22 | 东莞易步机器人有限公司 | battery protection device |
| CN203951175U (en) * | 2014-06-03 | 2014-11-19 | 福建万众百源实业有限公司 | A kind of based on PTC protective circuit on lithium battery protection board |
| CN206302188U (en) * | 2016-12-29 | 2017-07-04 | 欣旺达电子股份有限公司 | Rechargeable cellphone battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5262034B2 (en) * | 2007-09-14 | 2013-08-14 | 株式会社リコー | Charge / discharge protection circuit, battery pack incorporating the charge / discharge protection circuit, and electronic device using the battery pack |
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2016
- 2016-12-29 CN CN201611247278.4A patent/CN106849218B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814764A (en) * | 2009-12-11 | 2010-08-25 | 葛崇举 | Lithium battery power supply system special for direct current electric wrench |
| CN103532103A (en) * | 2013-10-08 | 2014-01-22 | 东莞易步机器人有限公司 | battery protection device |
| CN203951175U (en) * | 2014-06-03 | 2014-11-19 | 福建万众百源实业有限公司 | A kind of based on PTC protective circuit on lithium battery protection board |
| CN206302188U (en) * | 2016-12-29 | 2017-07-04 | 欣旺达电子股份有限公司 | Rechargeable cellphone battery |
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| CN106849218A (en) | 2017-06-13 |
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