CN104734306A - Lithium ion battery management system - Google Patents
Lithium ion battery management system Download PDFInfo
- Publication number
- CN104734306A CN104734306A CN201510189789.4A CN201510189789A CN104734306A CN 104734306 A CN104734306 A CN 104734306A CN 201510189789 A CN201510189789 A CN 201510189789A CN 104734306 A CN104734306 A CN 104734306A
- Authority
- CN
- China
- Prior art keywords
- lithium battery
- module
- lithium ion
- ion battery
- management system
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title abstract description 12
- 229910052744 lithium Inorganic materials 0.000 claims description 65
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 62
- 238000001514 detection method Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 150000002641 lithium Chemical class 0.000 description 3
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H02J7/0086—
-
- 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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a lithium ion battery management system which comprises a main battery management module, a motor controller module, a charging module and a plurality of lithium ion battery packs. The lithium ion battery packs are serially-parallelly connected. Each lithium ion battery pack is connected with a battery sub-detecting module through a signal line. The main battery management module is connected with the motor controller module, the charging module and the battery sub-detecting modules through signal lines respectively. Each lithium ion battery pack is further provided with a current balancer. The lithium ion battery management system has the advantages that a traditional lithium ion battery management system is optimized, the main battery management module directly controls the motor controller module and the charging module through signal transmission, the replay switch, short in service life, in the traditional lithium ion battery management system is replaced, and system reliability is increased; in addition, balancing is performed by the single-chip current balancers and a charger which are matched to actively reduce currents, the problem that a lithium ion battery is unbalanced after being used for several months, and the service life of the lithium ion battery is prolonged.
Description
Technical field
The invention belongs to field of lithium ion battery, be specifically related to a kind of lithium battery management system.
Background technology
Nowadays lithium battery technology has been applied in considerable field, and this just requires to carry out the charging and discharging of protect and manage lithium battery by the lithium battery management system that needs reliability is relatively high.Usually adopt relay as management switch in existing lithium battery management system, relay is sealed in main circuit, manages lithium battery by the opening and closing of relay.Relay can frequent opening and closing when managing, and relay generally only has the life-span of 10,000 opening and closings, adds relay to be in main circuit; often can cross larger electric current; relay often burns out, and this just makes the reliability of existing lithium battery management system not high, and useful life is shorter.
In addition, the current balance ability of existing lithium battery management system is less, even there is no current balance function, this makes lithium battery group often after using 3-6 month, just there will be the unbalanced problem of each battery core, usually cause using the electric automobile of this lithium battery group to occur exception parking, be unfavorable for development and the popularization of electric automobile.
Summary of the invention
For overcoming the shortcoming of prior art, the invention provides a kind of Novel lithium battery management system single core equilibrium and charging method combined, being intended to optimize traditional lithium battery management system, improving system reliability, extend the useful life of lithium battery.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions:
A kind of lithium battery management system, comprise a battery main management module, a motor control module, the lithium battery group of a charging module together with several connection in series-parallel, each described lithium battery group is all connected with a sub-detection module of battery by holding wire, described battery main management module is connected with described electric machine controller module, described charging module and the sub-detection module of described battery respectively by holding wire, and each described lithium battery group is also provided with a current equalizers.
The operation principle of described current equalizers is: the setting in advance chip being carried out to electric current, voltage and temperature, and the input of chip is connected to the both positive and negative polarity of battery, carries out signals collecting in real time to battery.When battery operation is normal, trigger switch is in closure state, and chip only carries out signals collecting work.After the electric current of battery, voltage or temperature arrive the preset value of chip, chip is started working, and the electric current of battery is flowed to heater heating from its output by chip after trigger switch, optocoupler, and the electric current in battery obtains equilibrium.Along with the temperature of heater constantly raises, when temperature arrives the deformation critical temperature of trigger switch, trigger switch generation deformation, disconnects immediately.After disconnection, heter temperature declines gradually, and trigger switch is due to its physical characteristic, and recovery of shape, returns to closure state again, waits for next time balanced.
Further, be in series with 7-12 in described lithium battery group and prop up lithium battery.
Further, chip, trigger switch, optocoupler and heater is comprised in described current equalizers, the input of described chip is connected with the both positive and negative polarity of battery, the output of described chip is connected with one end of described trigger switch, the other end of described trigger switch is connected with described heater through described optocoupler, described heater and described trigger switch bonded to each other.
Preferably, described trigger switch adopts marmem or two gold plaque.
Preferably, described heater is heating resistor or ceramic heater.
Operation principle of the present invention is as follows:
Lithium battery management system of the present invention by battery main management module and current equalizers with the use of.First in battery main management module, set one intervene the maximum voltage value that magnitude of voltage U1(is generally lithium battery group), then an equalizing voltage value U2 is set in current equalizers, U2 is slightly smaller than U1.
When charging module charges to lithium battery group, the voltage in lithium battery group constantly raises.When the voltage that current equalizers detects in any one lithium battery group reaches equalizing voltage value U2, first corresponding current equalizers carries out current balance to this lithium battery group; If the one-level intervention of current equalizers cannot suppress; when the voltage then detected in lithium battery group when the sub-detection module of battery reaches and intervenes magnitude of voltage U1; the sub-detection module of battery by Signal transmissions to battery main management module; battery main management module controls charging module by instruction again; the size of current that direct reduction charging module exports, protects lithium battery group.When the sub-detection module of battery detects that voltage resume in lithium battery group is below set point, the sub-detection module of battery again by Signal transmissions to battery main management module, battery main management module controls charging module by instruction again, recovers the size of current that charging module exports.Above-mentioned whole process is gone round and begun again, and moves in circles.
Compared with prior art, the present invention has following beneficial effect:
Present invention optimizes traditional lithium battery management system, battery main management module is directly controlled electric machine controller module and charging module by Signal transmissions, replace the relay switch that in original lithium battery management system, the life-span is not high, improve the reliability of system; And the mode that the present invention coordinates charger initiatively to subtract electric current by the single core current equalizers of employing carries out equilibrium to lithium battery group simultaneously, form the new lithium battery management mode that the balanced and charging method of a kind of single core combines, the big current achieving lithium battery group is balanced, solve lithium battery and just there will be unbalanced problem after the use several months, substantially prolongs the useful life of lithium battery.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is overall structure principle framework figure of the present invention;
Fig. 2 is the annexation schematic diagram of current equalizers of the present invention and lithium battery group.
Number in the figure illustrates: 1, battery main management module; 2, electric machine controller module; 3, charging module; 4, the sub-detection module of battery; 5, lithium battery group; 6, current equalizers; 601, chip; 602, trigger switch; 603, optocoupler; 604, heater.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Shown in Figure 1, a kind of lithium battery management system, comprise the lithium battery group 5 of a battery main management module 1, motor control module 2, charging module 3 together with several connection in series-parallel, each described lithium battery group 5 is all connected with a sub-detection module 4 of battery by holding wire, described battery main management module 1 is connected with the sub-detection module 4 of described electric machine controller module 2, described charging module 3 and described battery respectively by holding wire, and each described lithium battery group 5 is also provided with a current equalizers 6.
Further, be in series with 7-12 in described lithium battery group 5 and prop up lithium battery.
Further, shown in Figure 2, chip 601, trigger switch 602, optocoupler 603 and heater 604 is comprised in described current equalizers 6, the input of described chip 601 is connected with the both positive and negative polarity of described lithium battery group 5, the output of described chip 601 is connected with one end of described trigger switch 602, the other end of described trigger switch 602 is connected with described heater 604 through described optocoupler 603, and described heater 604 is bonded to each other with described trigger switch 602.
The operation principle of described current equalizers is: the setting in advance chip being carried out to electric current, voltage and temperature, and the input of chip is connected to the both positive and negative polarity of battery, carries out signals collecting in real time to battery.When battery operation is normal, trigger switch is in closure state, and chip only carries out signals collecting work.After the electric current of battery, voltage or temperature arrive the preset value of chip, chip is started working, and the electric current of battery is flowed to heater heating from its output by chip after trigger switch, optocoupler, and the electric current in battery obtains equilibrium.Along with the temperature of heater constantly raises, when temperature arrives the deformation critical temperature of trigger switch, trigger switch generation deformation, disconnects immediately.After disconnection, heter temperature declines gradually, and trigger switch is due to its physical characteristic, and recovery of shape, returns to closure state again, waits for next time balanced.
Preferably, described trigger switch 602 adopts marmem or two gold plaque.
Preferably, described heater 604 is heating resistor or ceramic heater.
Lithium battery management system of the present invention by battery main management module and current equalizers with the use of.First in battery main management module, set one intervene the maximum voltage value that magnitude of voltage U1(is generally lithium battery group), then an equalizing voltage value U2 is set in current equalizers, U2 is slightly smaller than U1.
When charging module charges to lithium battery group, the voltage in lithium battery group constantly raises.When the voltage that current equalizers detects in any one lithium battery group reaches equalizing voltage value U2, first corresponding current equalizers carries out current balance to this lithium battery group; If the one-level intervention of current equalizers cannot suppress; when the voltage then detected in lithium battery group when the sub-detection module of battery reaches and intervenes magnitude of voltage U1; the sub-detection module of battery by Signal transmissions to battery main management module; battery main management module controls charging module by instruction again; the size of current that direct reduction charging module exports, protects lithium battery group.When the sub-detection module of battery detects that voltage resume in lithium battery group is below set point, the sub-detection module of battery again by Signal transmissions to battery main management module, battery main management module controls charging module by instruction again, recovers the size of current that charging module exports.Above-mentioned whole process is gone round and begun again, and moves in circles.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a lithium battery management system, it is characterized in that: comprise a battery main management module (1), a motor control module (2), a charging module (3) and several connection in series-parallel lithium battery group (5) together, each described lithium battery group (5) is all connected with a sub-detection module of battery (4) by holding wire, described battery main management module (1) is respectively by holding wire and described electric machine controller module (2), described charging module (3) is connected with the sub-detection module of described battery (4), each described lithium battery group (5) is also provided with a current equalizers (6).
2. according to the said lithium battery management system of claim 1, it is characterized in that: be in series with 7-12 in described lithium battery group (5) and prop up lithium battery.
3. according to the said lithium battery management system of claim 1, it is characterized in that: in described current equalizers (6), comprise chip (601), trigger switch (602), optocoupler (603) and heater (604), the input of described chip (601) is connected with the both positive and negative polarity of described lithium battery group (5), the output of described chip (601) is connected with one end of described trigger switch (602), the other end of described trigger switch (602) is connected with described heater (604) through described optocoupler (603), described heater (604) is bonded to each other with described trigger switch (602).
4. according to the said lithium battery management system of claim 3, it is characterized in that: described trigger switch (602) adopts marmem or two gold plaque.
5. according to the said lithium battery management system of claim 3, it is characterized in that: described heater (604) is heating resistor or ceramic heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189789.4A CN104734306A (en) | 2015-04-21 | 2015-04-21 | Lithium ion battery management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510189789.4A CN104734306A (en) | 2015-04-21 | 2015-04-21 | Lithium ion battery management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104734306A true CN104734306A (en) | 2015-06-24 |
Family
ID=53457888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510189789.4A Pending CN104734306A (en) | 2015-04-21 | 2015-04-21 | Lithium ion battery management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104734306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806093A (en) * | 2018-06-21 | 2018-11-13 | 宁波绿炻光伏科技有限公司 | The Software for Design of portable type solar energy system with password |
| CN111409503A (en) * | 2020-04-03 | 2020-07-14 | 苏州盱酋汽车科技有限公司 | Power system of miniature electric automobile and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203674735U (en) * | 2013-10-30 | 2014-06-25 | 广东电网公司电力科学研究院 | Controllable current balancing system for electric vehicle battery pack |
| CN203787945U (en) * | 2013-12-20 | 2014-08-20 | 中投仙能科技（苏州）有限公司 | Lithium ion battery protector |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN204559181U (en) * | 2015-04-21 | 2015-08-12 | 中投仙能科技（苏州）有限公司 | A kind of lithium battery management system |
-
2015
- 2015-04-21 CN CN201510189789.4A patent/CN104734306A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203674735U (en) * | 2013-10-30 | 2014-06-25 | 广东电网公司电力科学研究院 | Controllable current balancing system for electric vehicle battery pack |
| CN203787945U (en) * | 2013-12-20 | 2014-08-20 | 中投仙能科技（苏州）有限公司 | Lithium ion battery protector |
| CN104092190A (en) * | 2014-07-28 | 2014-10-08 | 中投仙能科技（苏州）有限公司 | Trigger type lithium battery physical protector based on equalization |
| CN204559181U (en) * | 2015-04-21 | 2015-08-12 | 中投仙能科技（苏州）有限公司 | A kind of lithium battery management system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806093A (en) * | 2018-06-21 | 2018-11-13 | 宁波绿炻光伏科技有限公司 | The Software for Design of portable type solar energy system with password |
| CN111409503A (en) * | 2020-04-03 | 2020-07-14 | 苏州盱酋汽车科技有限公司 | Power system of miniature electric automobile and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105553001B (en) | Charging method and intelligent terminal | |
| CN102185159B (en) | Basic unit lithium battery pack module, multistage lithium battery pack and charge and discharge equilibrium method | |
| CN203434607U (en) | Lithium battery pack charging protection circuit | |
| CN101938152A (en) | Power battery pack equalizing circuit and method | |
| CN103001288B (en) | Battery set charge/discharge equalization methods, balancer and attending device | |
| CN101431248A (en) | Equalizing charge apparatus and equalizing charge method | |
| CN105958570A (en) | Lithium battery voltage balance circuit topology | |
| CN103779938A (en) | Charging balance circuit and method and discharging balance circuit and method for battery pack | |
| CN101986508A (en) | Battery equalizing device | |
| CN105244957B (en) | For the charge and discharge balancing equipment and corresponding equalization methods of Fast Charge Battery group | |
| CN104734260A (en) | Power battery equalizing charge method and system | |
| CN102856976A (en) | Discontinuous power supply, battery management system and discontinuous power supply system | |
| CN104393631A (en) | Electric quantity balancing system and balancing method | |
| CN104734306A (en) | Lithium ion battery management system | |
| CN204559181U (en) | A kind of lithium battery management system | |
| CN103337889A (en) | Power battery balancing device and method | |
| CN104935057A (en) | Equalization method and equalization system for lithium ion battery pack | |
| CN101599658A (en) | Lithium battery pack charge capacity equilibrium control method and protective device thereof | |
| TWM518824U (en) | Charging device with active charge equalization | |
| CN107959323A (en) | A kind of energy-storage system | |
| TWI624977B (en) | Active balance charging device | |
| CN204465076U (en) | The online balancer of multiple batteries series battery | |
| CN110601296A (en) | Active equalization circuit of battery management system | |
| CN202840562U (en) | Lithium battery pack balanced charge-discharge protective circuit and system | |
| CN104538998A (en) | Method and device for managing wireless charging and discharging of battery modules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |
|
| RJ01 | Rejection of invention patent application after publication |