CN105471050B - A kind of lithium battery intelligent conservative management method - Google Patents
A kind of lithium battery intelligent conservative management method Download PDFInfo
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- CN105471050B CN105471050B CN201610020059.6A CN201610020059A CN105471050B CN 105471050 B CN105471050 B CN 105471050B CN 201610020059 A CN201610020059 A CN 201610020059A CN 105471050 B CN105471050 B CN 105471050B
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- 238000007726 management method Methods 0.000 title claims abstract description 90
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 230000008054 signal transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
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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 kind of management method of lithium battery intelligent protection, cell voltage and resistance R1 voltages are detected in method；Whether battery has failed；Detect battery temperature；Whether battery is more than 60 degree；The parameters such as battery capacity, voltage, electric current, temperature are sent to MCU management systems；It receives MCU management system commands and handles；K1 gets to 1 port；Calculating current direction and size of current；Whether battery charges；Whether battery discharge current is more than 2C；Whether cell voltage is less than 3.0V；Whether MCU management systems are responded effective；K1 gets to 2 ports.The management method of lithium battery intelligent protection of the present invention will not add each battery again one independent detection line, but utilize superposed signal in main current loop, and the management to each battery and communication are completed by this signal.Since independent detection line will not be added to each battery, when thering is arbitrary more battery to add in, also only output and input for 2 lines, without excess lead, design succinctly.
Description
Technical field
The present invention relates to lithium batteries, and in particular to be a kind of protection of lithium battery intelligent management method.
Background technology
Lithium battery is widely used in various industries since advantage is too many, but due to lithium battery when in use, condition requirement is severe
Carve, thus must mating protective device could use.Existing protective device realizes basic overvoltage, crosses and puts, overcurrent protection
Function.But in new industry, such as electric vehicle, these industries of elevator do not allow the industry of power down, and existing protective device is just not
It is logical competent, and also need to strictly match, premature failure due to equilibrium charging problem.
Invention content
The object of the present invention is to provide a kind of management methods of lithium battery intelligent protection, it will not increase each battery again
If an independent detection line, but superposed signal in main current loop is utilized, completed by this signal to each battery
Management and communication.Since independent detection line will not be added to each battery, when having arbitrarily more battery additions,
Only output and input for 2 lines, without excess lead, design is succinct.
The present invention can be achieved through the following technical solutions：
A kind of management method of lithium battery intelligent protection, includes the following steps：
The first step, when exploitation is begun, first random delay；
Second step, the coding requirement sent to MCU management systems and random number；
Third walks, and receives information and the decoding of MCU management systems, obtains the random number and element number of transmission
4th step, whether the random number of reception is consistent with the random number of transmission, if unanimously, just then in next step, such as
Fruit is inconsistent, then returns to the first step；
5th step sends number to MCU management systems and completes response；
6th step sends number to MCU management systems and completes response；
7th step detects cell voltage and resistance R1 voltages；
Whether the 8th step, battery have failed, if it does, state is sent to MCU management systems, if not,
A just then step；
9th step detects battery temperature；
Tenth step, whether battery is more than 60 degree, if it does, state is sent to MCU management systems, if not,
A just then step；
11st step sends the parameters such as battery capacity, voltage, electric current, temperature to MCU management systems；
12nd step receives MCU management system commands and handles；
13rd step, K1 get to 1 port；
14th step, calculating current direction and size of current；
Whether the 15th step, battery charge, if it does, sending state to MCU management systems, if not, just
Then a step；
Whether the 16th step, battery discharge current are more than 2C, if it does, state is sent to MCU management systems, if
If no, a just then step；
17th step, whether cell voltage is less than 3.0V, if it does, then in next step, if not, then returning to
7th step；
18th step sends state to MCU management systems；
19th step waits for MCU management systems to respond；
20th step, whether MCU management system responses are effective, if it does, K1 gets to 2 ports, if not, with
Machine is delayed, and state is sent to MCU management systems.
In above-mentioned 15th step, if battery is charging, state is sent to MCU management systems, waits for MCU management systems
It responds, whether MCU management system responses are effective, if it does, whether battery charge is more than 1C, if not, just
Random delay sends state to MCU management systems；If charging current is greater than 1C, state is sent to MCU management systems；
If charging current is less than 1C, whether detection cell voltage is higher than 4.2V, when higher than 4.2V, to MCU management system hairs
Send state.
The management method of lithium battery intelligent protection of the present invention, the processing procedure of the MCU management system are as follows：
Whether a has coding requirement；
B, the random number that receiving unit is sent；
C sends number of queries instruction to all units, acquires existing number；
D inquires unused number, is encoded together with random number, sends coding；
E, the completion number response that receiving unit is sent；
F, the state that receiving unit is sent；
The parameters such as g, the battery capacity that receiving unit is sent, voltage, electric current, temperature；
Location mode and parameter are output to display screen by h.
The management method of lithium battery intelligent protection of the present invention is counted and is managed by the battery to access, and carries out phase
The calculating answered；Necessary parameter is shown to user, in order to which user understands the current state of battery pack.
In the management method of lithium battery intelligent protection of the present invention, lithium battery intelligent protective device is using the electricity on detecting battery
Pressure, electric current, charging and discharging state choose whether to be incorporated to circuit or bypass；In some applications, battery does not allow to be bypassed, because
This needs preset options；Such as it is in parallel, know that energy protective device can judge and be switched to the working condition of needs；By battery
Current state and the information of itself send, provide management information for master control management；Whether parallel operation mode, still
Operated in series connection mode can accurately know present battery capacity and status information.
Description of the drawings
Flow diagram of the attached drawing 1 for the management method of lithium battery intelligent of the present invention protection；
Attached drawing 2 manages the processing procedure schematic diagram of system for MCU in the management method of lithium battery intelligent of the present invention protection；
Attached drawing 3 is the battery intelligent protective device circuit diagram in the management method of lithium battery intelligent of the present invention protection.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to embodiment and attached drawing
Product of the present invention is described in further detail.
As shown in Figure 1, a kind of management method of lithium battery intelligent protection, includes the following steps：
The first step, when exploitation is begun, first random delay；
Second step, the coding requirement sent to MCU management systems and random number；
Third walks, and receives information and the decoding of MCU management systems, obtains the random number and element number of transmission
4th step, whether the random number of reception is consistent with the random number of transmission, if unanimously, just then in next step, such as
Fruit is inconsistent, then returns to the first step；
5th step sends number to MCU management systems and completes response；
6th step sends number to MCU management systems and completes response；
7th step detects cell voltage and resistance R1 voltages；
Whether the 8th step, battery have failed, if it does, state is sent to MCU management systems, if not,
A just then step；
9th step detects battery temperature；
Tenth step, whether battery is more than 60 degree, if it does, state is sent to MCU management systems, if not,
A just then step；
11st step sends the parameters such as battery capacity, voltage, electric current, temperature to MCU management systems；
12nd step receives MCU management system commands and handles；
13rd step, K1 get to 1 port；
14th step, calculating current direction and size of current；
Whether the 15th step, battery charge, if it does, sending state to MCU management systems, if not, just
Then a step；
Whether the 16th step, battery discharge current are more than 2C, if it does, state is sent to MCU management systems, if
If no, a just then step；
17th step, whether cell voltage is less than 3.0V, if it does, then in next step, if not, then returning to
7th step；
18th step sends state to MCU management systems；
19th step waits for MCU management systems to respond；
20th step, whether MCU management system responses are effective, if it does, K1 gets to 2 ports, if not, with
Machine is delayed, and state is sent to MCU management systems.
In above-mentioned 15th step, if battery is charging, state is sent to MCU management systems, waits for MCU management systems
It responds, whether MCU management system responses are effective, if it does, whether battery charge is more than 1C, if not, just
Random delay sends state to MCU management systems；If charging current is greater than 1C, state is sent to MCU management systems；
If charging current is less than 1C, whether detection cell voltage is higher than 4.2V, when higher than 4.2V, to MCU management system hairs
Send state.
As shown in Fig. 2, the management method of lithium battery intelligent protection of the present invention, the processing procedure of the MCU management system is such as
Under：
Whether a has coding requirement；
B, the random number that receiving unit is sent；
C sends number of queries instruction to all units, acquires existing number；
D inquires unused number, is encoded together with random number, sends coding；
E, the completion number response that receiving unit is sent；
F, the state that receiving unit is sent；
The parameters such as g, the battery capacity that receiving unit is sent, voltage, electric current, temperature；
Location mode and parameter are output to display screen by h.
As shown in figure 3, lithium battery intelligent protective device, including battery or battery pack B1, it is characterised in that：Battery or battery
Group B1 parallel connections are connected to energy storage module and MCU control module, and energy storage module provides backup power supply for MCU control module, in battery or
Circuit is connected in battery pack B1 circuits and is incorporated to or seals in selection function switch module K1, in battery or battery pack B1 circuits also
Communication module T1 is connected with, communication module T1 is incorporated to or seals in selection function switch module K1 with circuit and connect, communication module T1
Also it is connect with MCU control module.The energy storage module, energy storage module are simultaneously connected in battery or battery pack B1 and MCU control module
Between, including diode D1 and capacitance C1, the anode of diode D1 is connect with the anode of battery or battery pack B1, diode D1's
Cathode is connect with one end of capacitance C1, and the other end of capacitance C1 is connect with the cathode of battery or battery pack B1.The battery or electricity
The anode connection terminal of pond group B1 is serially connected with current sense resistor R1, and MCU control module is connect with the both ends of current sense resistor R1.
The circuit is incorporated to or seals in selection function switch module K1 and is serially connected in after current sense resistor R1, is incorporated to or seals in circuit
Selection function switch module K1 is parallel with the capacitance C2 for realizing alternating current path.As shown in Figure 1, S1 is first selected out for string or parallel function
It closes, T1 is communication module；K1 is incorporated to or seals in selection function switch module for circuit；R1 is current detecting；D1 and C1 compositions store
Energy device, backup power supply is provided for MCU control module；C2 provides alternating current path when getting to 1 position for K1, keeps in communication unimpeded.
Above-mentioned lithium battery intelligent protective device has the following advantages：
1. using the voltage on detecting battery, electric current, charging and discharging state chooses whether to be incorporated to circuit or bypass；
2. in some applications, battery does not allow to be bypassed, it is therefore desirable to preset options；Such as it is in parallel, dress can be protected by knowing
The working condition of needs can be judged and be switched to by putting；
3. the current state of battery and the information of itself are sent, management information is provided for master control management；
4. whether parallel operation mode or operated in series connection mode can accurately know present battery capacity and state
Information；It can be gone here and there and be combined with any amount, included balance rushes function, before battery combination, without pairing, without filling completely
Electric discharge.
First, the operating mode of series winding
1. the switch selection that circuit is tapped into, according to the state of battery and current working condition, switch selection is in string
It connects battery or concatenates external circuit and split cell two states；
2. resistance R1 is current sampling, when voltage difference is positive on resistance, represents that battery is in discharge condition, work as resistance
When upper voltage difference is reversed, represent that battery is in charged state；
3. transformer herein is signal transmission passage, the Signal averaging of communication on the main circuit, completes the transmission of signal
And reception；
4. diode D1 is capacitance C1 reserve powers, module provides work energy in order to control；
5. circuit works, the status information of control module meeting statistics and analysis present battery such as whether charging, uses
Number, at present remaining capacity, and receive main control chip management.
2nd, associated operating mode：
1. the switch selection that circuit is tapped into, according to the state of battery and current working condition, switch selection is in string
Connect battery or split cell two states；
2. resistance R is current sampling, when voltage difference is positive on resistance, represents that battery is in discharge condition, work as resistance
When upper voltage difference is reversed, represent that battery is in charged state；
3. transformer herein is signal transmission passage, the Signal averaging of communication on the main circuit, completes the transmission of signal
And reception.
The foregoing is only a preferred embodiment of the present invention, not makees limitation in any form to the present invention；It is all
The those of ordinary skill of the industry can be shown in by specification attached drawing and described above and swimmingly implement the present invention；It is but all
Those skilled in the art without departing from the scope of the present invention, using disclosed above technology contents
The equivalent variations of a little variation, modification and evolution made are the equivalent embodiment of the present invention；Meanwhile it is all according to the present invention
The variation, modification and evolution of any equivalent variations made to above example of substantial technological etc., still fall within the present invention's
Within the protection domain of technical solution.
Claims (3)
1. a kind of management method of lithium battery intelligent protective device, is realized, the lithium by lithium battery intelligent protective device
Battery intelligent protective device, including battery or battery pack (B1), it is characterised in that：Battery or battery pack (B1) parallel connection are connected to accumulation of energy
Module and MCU control module, energy storage module provide backup power supply for MCU control module, in battery or battery pack (B1) circuit
It is connected with circuit and is incorporated to or seals in selection function switch module (K1), be also associated with communicating in battery or battery pack (B1) circuit
Module (T1), communication module (T1) are incorporated to or seal in selection function switch module (K1) with circuit and connect, and communication module (T1) is also
It is connect with MCU control module；The selection function switch module (K1) is including 1 and 2 port；
The management method includes the following steps：
The first step, during beginning, first random delay；
Second step sends coding requirement and random number to MCU management systems；
Third walks, and receives information and the decoding of MCU management systems, obtains the random number and element number of transmission；
4th step, whether the random number of reception is consistent with the random number of transmission, if unanimously, just then in next step, if not
Unanimously, then the first step is returned；
5th step sends number to MCU management systems and completes response；
6th step detects cell voltage and resistance R1 voltages；
Whether the 7th step, battery have failed, if it does, sending state to MCU management systems, if not, just connect
A step；
8th step detects battery temperature；
Whether the 9th step, battery, if it does, sending state to MCU management systems, if not, just connect more than 60 degree
A step；
Tenth step sends the parameters such as battery capacity, voltage, electric current, temperature to MCU management systems；
11st step receives MCU management system commands and handles；
12nd step, the selection function switch module (K1) get to 1 port；
13rd step, calculating current direction and size of current；
Whether the 14th step, battery charge, if it does, sending state to MCU management systems, if not, just then
One step；
Whether the 15th step, battery discharge current are more than 2C, if it does, sending state to MCU management systems, if not
Words, just a then step；
16th step, whether cell voltage is less than 3.0V, if it does, then next step, if not, then back to the 7th
Step；
17th step sends state to MCU management systems；
18th step waits for MCU management systems to respond；
19th step, whether MCU management system responses are effective, if it does, the selection function switch module (K1) gets to 2
Port, if not, random delay sends state to MCU management systems.
2. the management method of lithium battery intelligent protective device according to claim 1, it is characterised in that：15th step, electricity
Whether pond charges, if it does, sending state to MCU management systems, MCU management systems is waited for respond, MCU management systems are returned
It should whether effectively if it does, whether battery charge is more than 1C, if not, with regard to random delay, be managed to MCU
System sends state；If charging current is greater than 1C, state is sent to MCU management systems；If charging current is less than
During 1C, whether detection cell voltage when higher than 4.2V, to MCU management system sends state higher than 4.2V.
3. the management method of lithium battery intelligent protective device according to claim 2, it is characterised in that：The MCU management
The processing procedure of system is as follows,
Whether a has coding requirement；
B, the random number that receiving unit is sent；
C sends number of queries instruction to all units, acquires existing number；
D inquires unused number, is encoded together with random number, sends coding；
E, the completion number response that receiving unit is sent；
F, the state that receiving unit is sent；
The parameters such as g, the battery capacity that receiving unit is sent, voltage, electric current, temperature；
Location mode and parameter are output to display screen by h.
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| CN201610020059.6A CN105471050B (en) | 2016-01-13 | 2016-01-13 | A kind of lithium battery intelligent conservative management method |
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| CN105471050B true CN105471050B (en) | 2018-06-26 |
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| CN106848456B (en) * | 2017-04-05 | 2019-07-26 | 中南民族大学 | Battery modules current switch telecommunication circuit and communication means |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612082Y (en) * | 2003-04-04 | 2004-04-14 | 京东方科技集团股份有限公司 | Rechargeable battery pack |
| CN101752623A (en) * | 2008-12-05 | 2010-06-23 | 三洋电机株式会社 | Charge control method of secondary battery and charge control device |
| CN103944238A (en) * | 2014-04-30 | 2014-07-23 | 深圳市睿德电子实业有限公司 | High-stability conveniently-maintained high-power power battery |
| CN104319841A (en) * | 2014-07-08 | 2015-01-28 | 北京鸿智电通科技有限公司 | Lithium battery charging management device |
| CN104935033A (en) * | 2015-05-19 | 2015-09-23 | 江苏金帆电源科技有限公司 | Storage battery formation processing and charging/discharging circuit and control method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9197096B2 (en) * | 2012-01-19 | 2015-11-24 | Apple Inc. | Charging techniques for solid-state batteries in portable electronic devices |
| US9869724B2 (en) * | 2013-07-24 | 2018-01-16 | Rohm Co., Ltd. | Power management system |
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2016
- 2016-01-13 CN CN201610020059.6A patent/CN105471050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2612082Y (en) * | 2003-04-04 | 2004-04-14 | 京东方科技集团股份有限公司 | Rechargeable battery pack |
| CN101752623A (en) * | 2008-12-05 | 2010-06-23 | 三洋电机株式会社 | Charge control method of secondary battery and charge control device |
| CN103944238A (en) * | 2014-04-30 | 2014-07-23 | 深圳市睿德电子实业有限公司 | High-stability conveniently-maintained high-power power battery |
| CN104319841A (en) * | 2014-07-08 | 2015-01-28 | 北京鸿智电通科技有限公司 | Lithium battery charging management device |
| CN104935033A (en) * | 2015-05-19 | 2015-09-23 | 江苏金帆电源科技有限公司 | Storage battery formation processing and charging/discharging circuit and control method thereof |
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