CN110061479A - A kind of li-ion cell protection system and guard method - Google Patents
A kind of li-ion cell protection system and guard method Download PDFInfo
- Publication number
- CN110061479A CN110061479A CN201910413067.0A CN201910413067A CN110061479A CN 110061479 A CN110061479 A CN 110061479A CN 201910413067 A CN201910413067 A CN 201910413067A CN 110061479 A CN110061479 A CN 110061479A
- Authority
- CN
- China
- Prior art keywords
- protection
- chip
- signal
- batteries
- overvoltage protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of li-ion cell protection system and guard methods, including a main protection chip, it is multiple from protection chip, detection module, if for detecting that the battery core voltage of a certain batteries is more than preset overvoltage protection threshold voltage, it and is more than setting delay time, it then triggers with the corresponding main protection chip coupled of the battery or from protection chip output over-voltage protection signal, main protection chip, overvoltage protection sluggishness signal is generated according to overvoltage protection signal, and by its by transmission module be sent to it is each from protection chip, judgment module, for judge it is each from protection chip whether exported the overvoltage protection signal；It is triggered, then adjusts overvoltage protection threshold voltage from protection chip that this is triggered to overvoltage protection hysteretic threshold, and open all balancing circuitrys of the corresponding m batteries of the chip；Its effect is: overcome it is existing in the prior art not only waste interface quantity, but also be easy to cause encapsulation yield it is low, the defect of increased costs.
Description
Technical field
The present invention relates to technical field of lithium batteries, and in particular to a kind of li-ion cell protection system and guard method.
Background technique
In the high pressures such as electric bicycle, UPS, high-power electric tool, high string number application field, with lithium battery technique into
The decline of step, price, lithium battery have been more and more widely used.Higher voltage, more powerful demand mean lithium battery
Battery (CELL) number of group (PACK) is also more and more.
In traditional scheme, there is the lithium battery protection solution applied to high string number.The program mainly uses C grades of exterior I
The mode of connection uses n independent Li battery protection IC and cascades mutually, to protect high string number lithium battery.But the program
There are many defects, for example, peripheral component and the large number of yield that will lead to of Li battery protection IC are low, and pcb board face
Product cascades the larger imbalance between being easy to cause CELL of the uneven power consumption between IC greatly without competitive advantage.
Also occurs single battery protecting circuit scheme below.Height string number battery is all protected by a battery protection chip
Shield.Although the program can solve a part of technical problem of above scheme, but its own there are disadvantages, i.e., the pressure resistance of processing procedure is needed
It asks higher, and more high voltage causes that IC area is bigger, cost is also higher, loses competitive advantage.
On the basis of both the above traditional scheme, and there is a kind of follow-on traditional scheme, application No. is:
CN201510464350.8, chip chamber uses more signal cascades in the program.This scheme needs to transmit 7 kinds of signals, over-voltage letter
Number, under-voltage signal, overvoltage delay signal, under-voltage sluggish signal, clock signal, timing synchronization signal and power supply signal, required letter
It is number more, and some signals are unnecessary, and the program is connected by the internal bonding line of encapsulation, that is, wastes interface quantity,
It is easy to cause encapsulation yield low again, increases cost.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of li-ion cell protection system and guard method, solves the prior art
In, interface quantity is not only wasted, but also be easy to cause encapsulation yield low, the defect of increased costs.
The technical scheme adopted by the invention is as follows: a kind of li-ion cell protection system, the li-ion cell protection system include (n+
1) * m batteries and protection chip, the protection chip include a main protection chip and n a from protection chip, a main protection
Chip and m batteries couple, and each couple from protection chip with corresponding m batteries, the main protection chip is also a with n respectively
From protection chip connection, the li-ion cell protection system further include: detection module, transmission module and judgment module；
If the detection module is used to detect that the battery core voltage of a certain batteries to be more than preset overvoltage protection thresholding electricity
Pressure, and holding time is more than setting overvoltage protection delay time, then trigger with the corresponding main protection chip coupled of the battery or
From protection chip output over-voltage protection signal；
The transmission module is used to the overvoltage protection signal being sent to the main protection chip；
The main protection chip is used to generate overvoltage protection sluggishness signal according to the overvoltage protection signal, and by the mistake
It is each described from protection chip that pressure protects sluggish signal to be sent to；
The judgment module is used for:
Judge each whether triggered by the detection module from protection chip and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, and open all balancing circuitrys of the corresponding m batteries of the chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, while being judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
Preferably, the judgment module is also used to:
Judge whether the main protection chip is triggered by the detection module and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and beat
Open all balancing circuitrys of the corresponding m batteries of the main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, simultaneously
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
Preferably, the detection module is also used to:
After balancing circuitry opening, the balance sluggishness door whether corresponding m batteries are all discharged into setting is detected
Limit is hereinafter, the either described overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
Preferably, the main protection chip and each from also transmitting has under-voltage signal and under-voltage sluggish believes between protection chip
Number.
Another technical solution that the present invention takes are as follows: a kind of guard method of li-ion cell protection system is applied to above-mentioned institute
The li-ion cell protection system stated, which comprises
If detection module detects that the battery core voltage of a certain batteries is more than preset overvoltage protection threshold voltage, and maintains
Time is more than setting overvoltage protection delay time, then triggers with the corresponding main protection chip coupled of the battery or from protection chip
Output over-voltage protection signal；
The overvoltage protection signal is sent to the main protection chip by the transmission module；
The main protection chip generates overvoltage protection sluggishness signal according to the overvoltage protection signal, and the over-voltage is protected
The sluggish signal of shield is sent to each described from protection chip；
The judgment module judges each whether triggered by the detection module from protection chip and exported the mistake
Pressure protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, and open all balancing circuitrys of the corresponding m batteries of the chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, while being judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
Preferably, the method also includes:
Judge whether the main protection chip is triggered by the detection module by judgment module and has exported the mistake
Pressure protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and beat
Open all balancing circuitrys of the corresponding m batteries of the main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, simultaneously
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
Preferably, the method also includes:
Through the detection module after balancing circuitry opening, detect whether corresponding m batteries are all discharged into
The balance hysteretic threshold of setting is hereinafter, the either described overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
Preferably, the main protection chip and each from also transmitting has under-voltage signal and under-voltage sluggish believes between protection chip
Number.
By adopting the above technical scheme, a kind of li-ion cell protection system proposed by the present invention and protection side are had the advantage that
Method, using the equilibrium for judging chip chamber between each chip according to additives for overcharge protection signal and overcharge sluggishness signal, thus real
Now lithium battery is protected, reduces number of signals and type to be treated, so overcome it is existing in the prior art both
Interface quantity is wasted, and be easy to cause encapsulation yield low, the defect of increased costs.
Detailed description of the invention
Fig. 1 is a kind of functional block diagram of li-ion cell protection system provided by the embodiment of the present invention；
Fig. 2 is a kind of flow chart of the guard method of li-ion cell protection system provided by the embodiment of the present invention.
Specific embodiment
In order to keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and
Specific embodiment is described in detail, and the following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Shown in referring to Fig.1, a kind of li-ion cell protection system provided in an embodiment of the present invention, the li-ion cell protection system packet
Including (n+1) * m batteries and protection chip, the protection chip includes a main protection chip and n from protecting chip, and one
Main protection chip and m batteries couple, and each couple from protection chip with corresponding m batteries, the main protection chip also divides
It is not connect with n from protection chip, the li-ion cell protection system further include: detection module, transmission module and judgment module；
If the detection module is used to detect that the battery core voltage of a certain batteries to be more than preset overvoltage protection thresholding electricity
Pressure, and holding time is more than setting overvoltage protection delay time, then trigger with the corresponding main protection chip coupled of the battery or
From protection chip output over-voltage protection signal；
The transmission module is used to the overvoltage protection signal being sent to the main protection chip；
The main protection chip is used to generate overvoltage protection sluggishness signal according to the overvoltage protection signal, and by the mistake
It is each described from protection chip that pressure protects sluggish signal to be sent to；
The judgment module is used for:
Judge each whether triggered by the detection module from protection chip and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, and open all balancing circuitrys of the corresponding m batteries of the chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection sluggishness door
Limit, while being judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
In practical application, overvoltage protection signal it could also be possible that main protection chip output, so, the judgment module
It is also used to:
Judge whether the main protection chip is triggered by the detection module and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and beat
Open all balancing circuitrys of the corresponding m batteries of the main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, simultaneously
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
In application, the main protection chip and each from also transmitting has under-voltage signal and under-voltage sluggish believes between protection chip
Number, that is, when carrying out li-ion cell protection, which need to only obtain four signals, only under-voltage signal and under-voltage sluggish signal
The basic scheme that protected mode is well known to those skilled in the art, therefore, details are not described herein；Each chip interior is equipped with phase
Balance module (i.e. balancing circuitry), time delay module for answering etc., the battery core that cascade each more protection chip pins are connected to it are balanced
Circuit is respectively independent.It should be noted that main protection chip or from protection chip be not triggered when, while according to corresponding m save
The state of battery judges whether to carry out Balance route to a certain batteries, specifically include:
If receiving the master chip of overvoltage protection sluggishness signal or there is no output over-voltage protection signal before from chip, such as
The voltage of the corresponding m batteries of this chip of fruit is all on balance threshold voltage, or is all balancing under threshold voltage, then not
Open balancing circuitry；If there is a certain economize on electricity cell voltage is higher than balance threshold voltage, the corresponding balancing circuitry of this batteries is opened
It opens and discharges this economize on electricity core, until closing balancing circuitry below balance hysteretic threshold voltage.One batteries of text can manage
Solution is a specific batteries or several batteries, a section or more piece in the corresponding corresponding coupling battery of some chip；Similarly,
It can also be the section or more piece in the corresponding corresponding coupling battery of each chip, herein with no restrictions.
Through the above scheme, core is judged according to additives for overcharge protection signal and overcharge sluggishness signal using between each chip
Equilibrium between piece protects lithium battery to realize, reduces number of signals and type to be treated, and then overcomes existing
Have and not only waste interface quantity present in technology, but also be easy to cause encapsulation yield low, the defect of increased costs.
Further, the detection module is also used to:
After balancing circuitry opening, the balance sluggishness door whether corresponding m batteries are all discharged into setting is detected
Limit is hereinafter, the either described overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
The application of the detection can avoid reducing battery, charge and discharge number extends making for battery to battery over-discharge
Use the service life.
To sum up, the program reduces clock signal, timing synchronization signal and power supply signal, the prior art compared with prior art
In clock signal and timing synchronization signal be used for the equilibrium function of synchronous each cascade chip, if obstructed oversampling clock signal and when
Sequence synchronization signal can not recognize the equilibrium state of other cascade chips.
Based on the same inventive concept of above scheme, with reference to Fig. 2, a kind of li-ion cell protection provided by the embodiment of the present invention
The guard method of system, applied to li-ion cell protection system described above, which comprises
S101, if detection module detects that the battery core voltage of a certain batteries is more than preset overvoltage protection threshold voltage,
And holding time is more than setting overvoltage protection delay time, then triggers with the corresponding main protection chip coupled of the battery or from guarantor
Protect chip output over-voltage protection signal；
The overvoltage protection signal is sent to the main protection chip by S102, the transmission module；
S103, the main protection chip generate overvoltage protection sluggishness signal according to the overvoltage protection signal, and will be described
Overvoltage protection sluggishness signal is sent to each described from protection chip；
S104, the judgment module judge each whether triggered and exported by the detection module from protection chip
State overvoltage protection signal；
S105 is triggered, then it is slow to overvoltage protection to adjust the overvoltage protection threshold voltage from protection chip being triggered
Stagnant thresholding, and open all balancing circuitrys of the corresponding m batteries of the chip；
S106 is not triggered, then adjusts the overvoltage protection threshold voltage from protection chip being triggered to overvoltage protection
Hysteretic threshold, while being judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
In practical application, overvoltage protection signal it could also be possible that main protection chip output, so, the method is also wrapped
It includes:
Judge whether the main protection chip is triggered by the detection module and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and beat
Open all balancing circuitrys of the corresponding m batteries of the main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, simultaneously
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries.
In application, the main protection chip and each from also transmitting has under-voltage signal and under-voltage sluggish believes between protection chip
Number, that is, when carrying out li-ion cell protection, which need to only obtain four signals, only under-voltage signal and under-voltage sluggish signal
The basic scheme that protected mode is well known to those skilled in the art, therefore, details are not described herein；Each chip interior is equipped with phase
Balance module (i.e. balancing circuitry), time delay module for answering etc., the battery core that cascade each more protection chip pins are connected to it are balanced
Circuit is respectively independent.It should be noted that main protection chip or from protection chip be not triggered when, while according to corresponding m save
The state of battery judges whether to carry out Balance route to a certain batteries, specifically include:
If receiving the master chip of overvoltage protection sluggishness signal or there is no output over-voltage protection signal before from chip, such as
The voltage of the corresponding m batteries of this chip of fruit is all on balance threshold voltage, or is all balancing under threshold voltage, then not
Open balancing circuitry；If there is a certain economize on electricity cell voltage is higher than balance threshold voltage, the corresponding balancing circuitry of this batteries is opened
It opens and discharges this economize on electricity core, until closing balancing circuitry below balance hysteretic threshold voltage.One batteries of text can manage
Solution is a specific batteries or several batteries, a section or more piece in the corresponding corresponding coupling battery of some chip；Similarly,
It can also be the section or more piece in the corresponding corresponding coupling battery of each chip, herein with no restrictions.
Through the above scheme, core is judged according to additives for overcharge protection signal and overcharge sluggishness signal using between each chip
Equilibrium between piece, thus realize lithium battery is protected, reduce compared with prior art clock signal, timing synchronization signal and
Power supply signal, clock signal in the prior art and timing synchronization signal are used for the equilibrium function of synchronous each cascade chip, if
Obstructed oversampling clock signal and timing synchronization signal can not recognize the equilibrium state of other cascade chips, reduce to be treated
Number of signals and type, so overcome it is existing in the prior art not only waste interface quantity, but also be easy to cause encapsulation yield it is low,
The defect of increased costs.
Further, the detection module is also used to:
After balancing circuitry opening, the balance sluggishness door whether corresponding m batteries are all discharged into setting is detected
Limit is hereinafter, the either described overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
The step of detection, is applied, and can avoid reducing battery to battery over-discharge, charge and discharge number extends battery
Service life.
Those of ordinary skill in the art may be aware that system module described in conjunction with the examples disclosed in this document and
Method and step can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and soft
The interchangeability of part generally describes each exemplary composition and step according to function in the above description.These function
It can be implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Professional skill
Art personnel can use different methods to achieve the described function each specific application, but this realization should not be recognized
It is beyond the scope of this invention.
Finally, it should be noted that foregoing description is only a specific embodiment of the invention, but protection scope of the present invention
It is not limited thereto, anyone skilled in the art in the technical scope disclosed by the present invention, can readily occur in
Change or replacement, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of li-ion cell protection system, the li-ion cell protection system includes (n+1) * m batteries and protection chip, the guarantor
Protecting chip includes that a main protection chip and n couple from protection chip, a main protection chip and m batteries, each from guarantor
Shield chip is coupled with corresponding m batteries, and the main protection chip is also connect with n from protection chip respectively, which is characterized in that
Further include: detection module, transmission module and judgment module；
If the detection module is used to detect that the battery core voltage of a certain batteries to be more than preset overvoltage protection threshold voltage, and
Holding time is more than setting overvoltage protection delay time, then triggers with the corresponding main protection chip coupled of the battery or from protection
Chip output over-voltage protection signal；
The transmission module is used to the overvoltage protection signal being sent to the main protection chip；
The main protection chip is used to generate overvoltage protection sluggishness signal according to the overvoltage protection signal, and the over-voltage is protected
The sluggish signal of shield is sent to each described from protection chip；
The judgment module is used for:
Judge each whether triggered by the detection module from protection chip and exported the overvoltage protection signal；
It is triggered, then adjusts overvoltage protection threshold voltage from protection chip that this is triggered to overvoltage protection hysteretic threshold, and
Open all balancing circuitrys of the corresponding m batteries of the chip；
It is not triggered, then adjusts overvoltage protection threshold voltage from protection chip that this is triggered to overvoltage protection hysteretic threshold,
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries simultaneously.
2. a kind of li-ion cell protection system according to claim 1, which is characterized in that the judgment module is also used to:
Judge whether the main protection chip is triggered by the detection module and exported the overvoltage protection signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and opening should
All balancing circuitrys of the corresponding m batteries of main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, while basis
The state of corresponding m batteries judges whether to carry out Balance route to a certain batteries.
3. any a kind of li-ion cell protection system according to claim 1 or in 2, which is characterized in that the detection module
It is also used to:
The balancing circuitry opening after, detect corresponding m batteries whether be all discharged into the balance hysteretic threshold of setting with
Under or the overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
4. a kind of li-ion cell protection system according to claim 1, which is characterized in that the main protection chip and each
From also transmitting has under-voltage signal and under-voltage sluggish signal between protection chip.
5. a kind of guard method of li-ion cell protection system, which is characterized in that applied to any described in Claims 1-4
Li-ion cell protection system, which comprises
If detection module detects that the battery core voltage of a certain batteries is more than preset overvoltage protection threshold voltage, and holds time
More than setting overvoltage protection delay time, then triggering is exported with the corresponding main protection chip coupled of the battery or from protection chip
Overvoltage protection signal；
The overvoltage protection signal is sent to the main protection chip by the transmission module；
The main protection chip generates overvoltage protection sluggishness signal according to the overvoltage protection signal, and the overvoltage protection is slow
Hysteresis signal is sent to each described from protection chip；
The judgment module judges each whether triggered by the detection module from protection chip and exported the over-voltage and protected
Protect signal；
It is triggered, then adjusts overvoltage protection threshold voltage from protection chip that this is triggered to overvoltage protection hysteretic threshold, and
Open all balancing circuitrys of the corresponding m batteries of the chip；
It is not triggered, then adjusts overvoltage protection threshold voltage from protection chip that this is triggered to overvoltage protection hysteretic threshold,
Judged whether to carry out Balance route to a certain batteries according to the state of corresponding m batteries simultaneously.
6. a kind of guard method of li-ion cell protection system according to claim 5, which is characterized in that the method is also wrapped
It includes:
Judge whether the main protection chip is triggered by the detection module by judgment module and has exported the over-voltage guarantor
Protect signal；
It is triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, and opening should
All balancing circuitrys of the corresponding m batteries of main protection chip；
It is not triggered, then adjusts the overvoltage protection threshold voltage of the main protection chip to overvoltage protection hysteretic threshold, while basis
The state of corresponding m batteries judges whether to carry out Balance route to a certain batteries.
7. a kind of guard method of li-ion cell protection system according to claim 5, which is characterized in that the method is also wrapped
It includes:
Through the detection module after balancing circuitry opening, detect whether corresponding m batteries are all discharged into setting
Balance hysteretic threshold hereinafter, either overvoltage protection signal revocation；
After reaching any of the above-described condition, then all balancing circuitrys of corresponding m batteries are closed.
8. a kind of guard method of li-ion cell protection system according to claim 5, which is characterized in that the main protection core
Piece and each from also transmitting has under-voltage signal and under-voltage sluggish signal between protection chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413067.0A CN110061479B (en) | 2019-05-17 | 2019-05-17 | Lithium battery protection system and protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910413067.0A CN110061479B (en) | 2019-05-17 | 2019-05-17 | Lithium battery protection system and protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110061479A true CN110061479A (en) | 2019-07-26 |
| CN110061479B CN110061479B (en) | 2022-01-04 |
Family
ID=67323652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910413067.0A Active CN110061479B (en) | 2019-05-17 | 2019-05-17 | Lithium battery protection system and protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110061479B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399442A (en) * | 2008-11-05 | 2009-04-01 | 江苏大学 | Two-stage protection method for lithium ionic battery pack and circuit thereof |
| CN104953558A (en) * | 2015-07-31 | 2015-09-30 | 中颖电子股份有限公司 | Battery protection system |
| CN207559625U (en) * | 2017-12-05 | 2018-06-29 | 深圳市德兰明海科技有限公司 | A kind of distributed battery management system and power battery |
-
2019
- 2019-05-17 CN CN201910413067.0A patent/CN110061479B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399442A (en) * | 2008-11-05 | 2009-04-01 | 江苏大学 | Two-stage protection method for lithium ionic battery pack and circuit thereof |
| CN104953558A (en) * | 2015-07-31 | 2015-09-30 | 中颖电子股份有限公司 | Battery protection system |
| CN207559625U (en) * | 2017-12-05 | 2018-06-29 | 深圳市德兰明海科技有限公司 | A kind of distributed battery management system and power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110061479B (en) | 2022-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101436830B (en) | Power supply device and protection method thereof | |
| CN101174770B (en) | Charging protection device | |
| CN102957173B (en) | Multi-cell serially-connected lithium battery pack equalization and protection system | |
| CN105932749A (en) | Special lithium battery power supply device for garden tool | |
| CN105048607B (en) | A kind of new multi output lithium battery source device and its control method | |
| CN110336354A (en) | The power control circuit of battery management system | |
| CN101860442A (en) | Exchanger, power supply device and method for realizing power-down remote-end alarm | |
| CN105277902A (en) | Battery abnormal-state detection circuit and battery abnormal-state detection circuit system | |
| CN104953558B (en) | A kind of battery protection system | |
| CN110247442A (en) | For protecting the protection circuit and guard method and battery management system of battery pack | |
| CN104467040A (en) | Vehicle-mounted uninterruptible power supply (UPS) storage battery control and management device | |
| CN1877946A (en) | Secondary battery protective chip | |
| CN201742134U (en) | Charge and discharge protection device for parallel connection storage battery | |
| CN110879350A (en) | Detection method of battery equalization circuit and battery management system | |
| CN106411360A (en) | Communication equipment and communication system | |
| CN109687400A (en) | A kind of low consumption circuit and its implementation suitable for battery protection | |
| CN110061479A (en) | A kind of li-ion cell protection system and guard method | |
| CN205304277U (en) | House portable power source | |
| CN216959356U (en) | Protection circuit for charging and discharging of lithium battery and lithium battery management system | |
| TWI328913B (en) | ||
| CN205753547U (en) | A kind of garden instrument specialized lithium battery powdered device | |
| CN101098074A (en) | Multi-section lithium ion battery pack protection circuit | |
| CN101237140A (en) | Water-proof protection device for digital product | |
| CN201266847Y (en) | Battery bag and combination of battery bag and electrical device | |
| CN209250301U (en) | A kind of battery charge/discharge protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518000 1701, building 1, Shenzhen new generation industrial park, 136 Zhongkang Road, Meidu community, Meilin street, Futian District, Shenzhen City, Guangdong Province Applicant after: Fuman microelectronics Group Co.,Ltd. Address before: 518000 18 / F, west area, times science and technology building, nongyuan Road, Xiangmihu street, Futian District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN FUMAN ELECTRONIC GROUP Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |