CN205453237U - Lithium battery supply module management system - Google Patents
Lithium battery supply module management system Download PDFInfo
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- CN205453237U CN205453237U CN201620244331.4U CN201620244331U CN205453237U CN 205453237 U CN205453237 U CN 205453237U CN 201620244331 U CN201620244331 U CN 201620244331U CN 205453237 U CN205453237 U CN 205453237U
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- power module
- battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Lithium battery measurement protects technical field, concretely relates to lithium battery supply module management system. A power module for managing the lithium cell constitutes, power module comprises a plurality of group battery, the group battery is established ties by a plurality of battery piece and is constituted, the battery piece comprises a battery monomer or a plurality of parallelly connected battery monomer, battery piece one the 1st change over switch that connects in parallel, change over switch in every group battery forms a switch matrix, switch matrix connects group battery the control unit, group battery the control unit can monitor a change over switch change state in the filling the state parameter of the state of putting and sending corresponding drive signal control switch array of battery piece and make corresponding battery piece shift out to fill, the return circuit of discharging, still include the power module administrative unit that links to each other with group battery the control unit, with the machine that charges that the power module administrative unit is connected, the power module administrative unit produces the instruction according to state parameter, and the machine adjustment is charged to charge mode and charging current size to control.
Description
Technical field
This utility model belongs to lithium battery charge and discharge protective technical field, is specifically related to a kind of lithium battery source module management system.
Background technology
At present, electric automobile causes the attention of increasing country with the advantage of the energy-conserving and environment-protective of its uniqueness, has carried out substantial amounts of correlational study and development.The advantages such as wherein dynamic lithium battery power supply is little with its volume possessed, light weight, energy density are big, memory-less effect, length in service life, range is wide, running voltage is high and self-discharge rate is low and become main flow electrodynamic source technology.
Normally, dynamic lithium battery is used in series in groups, and between many groups, series connection and parallel connection form battery bag again.If there being a battery charging voltage to reach setting value (such as 4.2V) during set of cells charging, i.e. cut off charge circuit to avoid overcharge.But owing to there is conforming problem between battery, causing the total electricity of the appearance of " wooden pail effect ", i.e. set of cells to be limited by certain cell, a cell can only be full of by charging, whole set of cells is discontented with so that battery power discharge capacity diminishes.Equally, needing cut-out discharge loop to avoid overdischarge if there being monomer to reach setting value during battery power discharge, reducing battery power discharge capacity further.
Some charge and discharge balancing technology are used to attempt to improve this problem for these people.Including the passive type equilibrium using bypass resistance, the correlation technique such as active equilibrium that uses the active equilibrium compensating electric capacity, use master-slave mode inductance coil.Current balancing technique is all based on shunting principle, and for deviateing the cell of many number intervals or carrying out shunting Reduction of Students' Study Load on the premise of not turning off the performance loop of battery, or it is supplementary to carry out confluxing.Its existing problems are powerful shuntings, effect of confluxing is difficult to realize, and still needs to continuous firing when cell is in overcharge, overdischarge, can accelerate cell degradation once Balance route measure coupling is the best；Simultaneously also cannot be simply with new battery replacement used batteries.
On the other hand, when lithium battery in use incipient fault occurs due to reasons such as the internal micro-short circuit of certain cell, existing balancing technique can cover this problem to a great extent；And existing battery management system can only select battery supply loop fast shut-off to avoid fault to cause damage while sending warning signal after fault substantially occurs, thus also make automobile lose power and cannot travel.
Utility model content
The problem brought for the battery consistency difference overcoming current driving force lithium battery power supply to exist; the purpose of this utility model is to provide a kind of lithium battery source module management system; this device can realize the protection overcharging, excessively putting abnormality of battery cell in the way of relatively simple, economical; thus improve using capacity and extending the service life of set of cells of set of cells; and can remove damaging battery from major loop when incipient fault occurs in battery; allow remaining battery continue to provide electric power, improve the reliability of battery system.Its principle is the method utilizing cutout equilibrium, i.e. to one single-pole double-throw switch (SPDT) of each cell parallel (mechanical contact or electronic power parts), occur that battery is individually bypassed disconnection by overcharge, overdischarge i.e. permutator once battery, battery is avoided excessively to use, alleviate the impact of wooden pail effect simultaneously, be convenient for changing new battery.
For reaching object above, the technical solution adopted in the utility model is a kind of lithium battery source module management system, for managing the power module that lithium battery is constituted, described power module is made up of several set of cells, described set of cells is in series by several cell pieces, described cell piece is made up of the battery cell of a battery cell or multiple parallel connection, described cell piece first permutator in parallel, described first permutator one switch arrays of composition in each described set of cells, described switch arrays connect set of cells control unit, described set of cells control unit can be monitored the state parameter of the charge and discharge state of described cell piece and send described first permutator that respective drive signal controls in described switch arrays and change state and make the removal of corresponding described cell piece fill, discharge loop；The most also include the power module administrative unit being connected with described set of cells control unit, the charger being connected with described power module administrative unit, the described state parameter that described power module administrative unit sends according to described set of cells control unit produces command adapted thereto, controls described charger and adjusts the charge mode to described power module and charging current.
Further; described power module administrative unit includes connecting the CPU having current sensor, cut-out relay, limiting protector; being arranged on the first CAN communication bus on a described CPU, the second CAN communication bus, the 3rd CAN communication bus, described first CAN communication bus connects described set of cells control unit, described second CAN communication bus connects superior system, described 3rd CAN communication bus connects described charger；Described second CAN, the 3rd CAN communication bus are arranged on a described CPU by the first photoisolator respectively；The charge mode of described charger includes trickle charge pattern, constant current charging mode, current limliting blood pressure lowering charge mode.
Further, described set of cells control unit is included the 2nd CPU being connected by the second photoisolator and the first CAN communication bus, connects described 2nd CPU and the Voltage measure of described switch arrays, connects the temperature sensor of described 2nd CPU, also includes current measurer, switch arrays driver；Described first permutator is conversion type, use electric motor type relay, comprise the single-pole double throw mechanical switch being made up of a movable contact and two stationary contacts, described single-pole double throw mechanical switch includes " normally closed " and " conversion " two states, the described electric motor type relay of each described first permutator all connects described set of cells control unit by special relay drive circuit and obtains the described driving signal that described set of cells control unit sends, and described charge and discharge state includes " overcharging ", " cross and put ", " overheated " state.
Further, described limiting protector includes charging current limiter resistance and the electric discharge current-limiting resistance of series connection, described charging current limiter resistance, electric discharge current-limiting resistance second permutator the most in parallel, described second permutator is conversion type, use electric motor type relay, comprise the single-pole double throw mechanical switch being made up of a movable contact and two stationary contacts, described single-pole double throw mechanical switch includes " normally closed " and " conversion " two states, the described electric motor type relay of each described second permutator all connects a described CPU by special relay drive circuit, under the control of a described CPU, described charging current limiter resistance can be placed into or remove described charge circuit, described electric discharge current-limiting resistance can be placed into or remove described discharge loop.
Further, the DC supply of described power module administrative unit and described set of cells control unit is changed by the DC-DC of the outfan of described power module and is obtained.
The beneficial effects of the utility model are:
1. in the way of relatively simple, achieve the target of charging and discharging lithium battery equilibrium, be provided simultaneously with adapting to high-power use environment, the advantage of high reliability.
2. there is control advantage simple, lower-cost, and can preferably adapt to the use condition that lithium battery free state differs greatly.
3. can implement to control to cell piece monomer, the unusual condition of certain cell piece monomer can not affect the normal work of set of cells, improves the functional reliability of lithium battery power supply.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the management system of lithium battery source module described in this utility model detailed description of the invention；
Fig. 2 is the annexation schematic diagram of switch arrays described in this utility model detailed description of the invention and described cell piece；
Fig. 3 is the schematic diagram of limiting protector described in this utility model detailed description of the invention；
In figure: 1-the oneth CPU, 2-cut-out relay, 3-current sensor; 4-limiting protector, 5-the first CAN communication bus, 6-the second CAN communication bus; 7-the 3rd CAN communication bus; 8-charger, 9-superior system, 10-the 2nd CPU; 11-Voltage measure; 12-temperature sensor, 13-switch arrays, 14-set of cells; 15-cell piece; 16-electric motor type relay, 17-single-pole double throw mechanical switch, 18-relay drive circuit; 19-the second photoisolator; 20-the first photoisolator, 21-charging current limiter resistance, 22-discharges current-limiting resistance.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
nullAs shown in Figure 1，A kind of lithium battery source module management system that this utility model provides，For managing the power module that lithium battery is constituted，Power module is made up of several set of cells 14，Set of cells 14 is in series by several cell pieces 15，Cell piece 15 is made up of the battery cell of a battery cell or multiple parallel connection，Cell piece 15 first permutator in parallel，First permutator one switch arrays 13 of composition in each set of cells 14，Switch arrays 13 connect set of cells control unit，Set of cells control unit can be monitored the state parameter of the charge and discharge state of cell piece 15 and send the first permutator that respective drive signal controls in switch arrays 13 and change state and make the removal of corresponding cell piece 15 fill、(charge and discharge state includes " overcharging " to discharge loop、" cross and put "、" overheated " state)；Also include the power module administrative unit being connected with set of cells control unit, the charger 8 being connected with power module administrative unit, the state parameter that power module administrative unit sends according to set of cells control unit produces command adapted thereto, controls charger 8 and adjusts the charge mode to power module and charging current.
Power module administrative unit includes connecting current sensor 3, cut-out relay 2, limiting protector 4 and a CPU1 of the first photoisolator 20; first CAN communication bus the 5, second CAN communication bus the 6, the 3rd CAN communication bus 7 being arranged on a CPU1; wherein, the second CAN the 6, the 3rd CAN communication bus 7 is arranged on a CPU by the first photoisolator 20 respectively.First CAN communication bus 5 connects set of cells control unit, the second CAN communication bus 6 connects superior system the 9, the 3rd CAN communication bus 7 and connects charger 8；
The charge mode of charger 8 includes trickle charge pattern, constant current charging mode, current limliting blood pressure lowering charge mode.
Set of cells control unit is included the 2nd CPU10 being connected with the first CAN communication bus 5 by the second photoisolator 19, is connected the 2nd CPU10 and the Voltage measure 11 of switch arrays 13, the temperature sensor 12 of connection the 2nd CPU10, also includes current measurer, switch arrays driver (not marking in figure).
As shown in Figure 2, first permutator is conversion type, use electric motor type relay 16, comprise the single-pole double throw mechanical switch 17 being made up of a movable contact and two stationary contacts, the single-pole double throw mechanical switch 17 of the first permutator includes " normally closed " and " conversion " two states, and the electric motor type relay 16 of each first permutator all connects set of cells control unit by special relay drive circuit 18 and obtains the driving signal that set of cells control unit sends.
As it is shown on figure 3, limiting protector 4 includes charging current limiter resistance 21 and the electric discharge current-limiting resistance 22 of series connection；Charging current limiter resistance 21, electric discharge current-limiting resistance 22 second permutator the most in parallel, second permutator is similarly conversion type, same employing electric motor type relay 16, comprise the single-pole double throw mechanical switch 17 being made up of a movable contact and two stationary contacts equally, single-pole double throw mechanical switch 17 in second permutator also includes " normally closed " and " conversion " two states, the electric motor type relay 16 of each second permutator all connects a CPU1 by special relay drive circuit 18, under the control of a CPU, charging current limiter resistance 21 can be placed into or remove charge circuit, electric discharge current-limiting resistance 22 can be placed into or remove discharge loop.(charging current limiter resistance 21, electric discharge current-limiting resistance 22 can not put into charge and discharge loop simultaneously.)
The DC supply of power module administrative unit and set of cells control unit is changed by the DC-DC of the outfan of power module and is obtained.
This utility model additionally provides a kind of lithium battery source module management method of above-mentioned lithium battery source module management system, comprises the steps:
Step S1, after charger 8 powers on, sends data to power module administrative unit, shows that charger 8 adds charge circuit, and charger 8 is idle condition.
Step S2, according to each cell piece 15 practical situation in the set of cells 14 of battery module, power module administrative unit judges whether that starting charger 8 is charged, if "No", then charger 8 would not allow for charging, charger 8 is idle condition, if "Yes", then controls charger 8 and starts charging.
Step S3, when the set of cells 14 of battery module is charged, first permutator is in normally off, when a certain cell piece 15 is in and overcharges state, set of cells control unit monitors this cell piece 15 and overcharges signal, is simultaneously emitted by an instruction, corresponding first permutator is made to jump to transition status, this cell piece 15 overcharged is removed charge circuit, is repeated in above operation, until all cell pieces 15 in the set of cells 14 of battery module all remove charge circuit；
The most also include the concrete control to the operational mode of charger 8 of the power module administrative unit, power module administrative unit is according to the state parameter of each cell piece 15, principle according to " safety first; the life-span is preferential ", whether instant detection set of cells there is a need to change the cell piece of charging current, select the one in trickle charge pattern, constant current charging mode, current limliting blood pressure lowering charge mode.Particular content is as follows:
Set of cells control unit sends the state parameter of cell piece 15 to power module administrative unit, and the state parameter of the cell piece 15 that power module administrative unit is sent according to set of cells control unit checks for the cell piece needing to change charging current；
Allow the cell piece of cell piece charging voltage less than minimum if there is voltage, power module administrative unit controls to send command adapted thereto charger 8 to charger 8 and enters trickle charge pattern, charging voltage and electric current are in lower value, exit trickle charge pattern when this cell piece recovers normal voltage range；
If there is no needing to change the cell piece of charging current, start to charge normal, power module administrative unit controls charger 8 and enters constant current charging mode, power module administrative unit can provide maximum allowable charging battery module voltage, maximum allowable cell sheet charging voltage, maximum allowable charging current, battery module terminal voltage, high monomer cell piece voltage as charging restrictive condition, is charged；
nullWhen being higher than the cell piece of maximum allowable cell sheet charging voltage if there is voltage (when high monomer cell piece voltage arrives maximum allowable cell sheet charging voltage)，This cell piece is removed charge circuit by controlling corresponding set of cells control unit by power module administrative unit，For ensureing that the voltage of remaining cell piece does not transfinites，Control charger 8 simultaneously and enter current limliting blood pressure lowering charge mode，Staged reduces (charger) charging voltage，Decline (charger) charging voltage according to preset value when removing cell piece from charge circuit every time，Power module administrative unit constantly will be filled with the cell piece removal charge circuit of electricity by set of cells control unit subsequently，During until the deviation of the minimum voltage of remaining power sheet and maximum allowable cell sheet charging voltage is less than predetermined value，Charger 8 is shut down，Stop charging；
The most also including, when charger 8 is in abnormal protection, reset itself in charging process, forbids the situations such as charging, charger 8 transfers idle condition to, when charger 8 finds the communication abnormality between power module administrative unit, stops charging；
The most also include, when described charger 8 occurs controlling to lose efficacy, or charger 8 is non-supporting special charger 8, and power module administrative unit finds that when charging voltage and electric current do not mate with current charge mode, the Failure Control strategy of charger 8 is as follows:
1) power module administrative unit will send adjustment instruction to charger 8；
2) when in the appointment time, charger 8 is without correct response, power module administrative unit calculates the electricity of each set of cells 14, if each set of cells 14 is close to full state, then superior system 9 sends caution signals and disconnects charge circuit by cut-out relay 2 simultaneously；
3) if the electricity of each set of cells 14 is not enough; and charging current more than preset value time; power module administrative unit sends caution signals and the second corresponding for the charging current limiter resistance 21 in limiting protector 4 permutator is changed into transition status simultaneously, and charging current limiter resistance 21 is accessed charge circuit；
4) disconnect charging by cut-out relay 2 after charging complete, the second corresponding for the charging current limiter resistance 21 in limiting protector 4 permutator is changed into normally off, charging current limiter resistance 21 is removed charge circuit.
Step S4, set of cells control unit controls whole first permutatoies and jumps to normally off, prepares electric discharge.
Step S5, when the set of cells 14 of battery module is discharged, first permutator is in normally off, when a certain cell piece 15 was in and puts state, set of cells control unit monitors this cell piece 15 and crosses discharge signal, is simultaneously emitted by an instruction, corresponding first permutator is made to jump to transition status, this is crossed the cell piece 15 put and removes discharge loop, be repeated in above operation, until all cell pieces 15 in the set of cells 14 of battery module all remove discharge loop；The most also include, in described battery module discharge process, if set of cells 14 dump energy is less than preset value, and discharge current (namely set of cells dump energy is few when exceeding preset value or make the voltage decrease speed of set of cells 14 more than preset value, and battery voltage decline very fast time), power module administrative unit superior system 9 sends caution signals, if situation is improved not yet within the setting time, the second corresponding for electric discharge current-limiting resistance 22 in limiting protector 4 permutator is changed into transition status, electric discharge current-limiting resistance 22 is accessed discharge loop, reduce discharge current to avoid lithium battery overdischarge.
Step S6, set of cells control unit controls whole first permutatoies and jumps to normally off, prepares charging.
In step S1 step to step S6, power module administrative unit finds that certain cell piece 15 is due to when incipient fault occur in the reasons such as internal micro-short circuit (time the most overheated), superior system 9 sends caution signals, feedback decision according to superior system 9 processes strategy, or to the transmission instruction of corresponding described set of cells control unit, this cell piece 15 is removed charge and discharge loop.
Device described in the utility model is not limited to the embodiment described in detailed description of the invention, and those skilled in the art draw other embodiment according to the technical solution of the utility model, also belongs to technological innovation scope of the present utility model.
Claims (5)
- null1. a lithium battery source module management system，For managing the power module that lithium battery is constituted，Described power module is made up of several set of cells (14)，Described set of cells (14) is in series by several cell pieces (15)，Described cell piece (15) is made up of the battery cell of a battery cell or multiple parallel connection，Described cell piece (15) first permutator in parallel，Described first permutator one switch arrays (13) of composition in each described set of cells (14)，Described switch arrays (13) connect set of cells control unit，Described set of cells control unit can be monitored the state parameter of the charge and discharge state of described cell piece (15) and send described first permutator that respective drive signal controls in described switch arrays (13) and change state and make the removal of corresponding described cell piece (15) fill、Discharge loop；It is characterized in that: also include the power module administrative unit being connected with described set of cells control unit, the charger (8) being connected with described power module administrative unit, the described state parameter that described power module administrative unit sends according to described set of cells control unit produces command adapted thereto, controls described charger (8) and adjusts the charge mode to described power module and charging current.
- 2. lithium battery source module management system as claimed in claim 1, it is characterized in that: described power module administrative unit includes that connection has current sensor (3), cut-out relay (2), oneth CPU (1) of limiting protector (4), it is arranged on the first CAN communication bus (5) on a described CPU (1), second CAN communication bus (6), 3rd CAN communication bus (7), described first CAN communication bus (5) connects described set of cells control unit, described second CAN communication bus (6) connects superior system (9), described 3rd CAN communication bus (7) connects described charger (8)；Described second CAN (6), the 3rd CAN communication bus (7) are arranged on a described CPU by the first photoisolator (20) respectively, and the charge mode of described charger (8) includes trickle charge pattern, constant current charging mode, current limliting blood pressure lowering charge mode.
- 3. lithium battery source module management system as claimed in claim 2, it is characterized in that: described set of cells control unit is included the 2nd CPU (10) being connected by the second photoisolator (19) and the first CAN communication bus (5), is connected described 2nd CPU (10) and the Voltage measure (11) of described switch arrays (13), connects the temperature sensor (12) of described 2nd CPU (10), also includes current measurer, switch arrays driver；Described first permutator is conversion type, use electric motor type relay (16), comprise the single-pole double throw mechanical switch (17) being made up of a movable contact and two stationary contacts, described single-pole double throw mechanical switch (17) includes " normally closed " and " conversion " two states, the described electric motor type relay (16) of each described first permutator all connects described set of cells control unit by special relay drive circuit (18) and obtains the described driving signal that described set of cells control unit sends, described charge and discharge state includes " overcharging ", " cross and put ", " overheated " state.
- null4. lithium battery source module management system as claimed in claim 2，It is characterized in that: described limiting protector (4) includes charging current limiter resistance (21) and electric discharge current-limiting resistance (22) of series connection，Described charging current limiter resistance (21)、Electric discharge current-limiting resistance (22) second permutator the most in parallel，Described second permutator is conversion type，Use electric motor type relay (16)，Comprise the single-pole double throw mechanical switch (17) being made up of a movable contact and two stationary contacts，Described single-pole double throw mechanical switch (17) includes " normally closed " and " conversion " two states，The described electric motor type relay (16) of each described second permutator all connects a described CPU (1) by special relay drive circuit (18)，Under the control of a described CPU，Described charging current limiter resistance (21) can be placed into or remove described charge circuit、Described electric discharge current-limiting resistance (22) can be placed into or remove described discharge loop.
- 5. the lithium battery source module management system as described in any one of claim 1-4, is characterized in that: the DC supply of described power module administrative unit and described set of cells control unit is changed by the DC-DC of the outfan of described power module and obtained.
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| CN201620244331.4U CN205453237U (en) | 2016-03-28 | 2016-03-28 | Lithium battery supply module management system |
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| CN201620244331.4U CN205453237U (en) | 2016-03-28 | 2016-03-28 | Lithium battery supply module management system |
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| CN205453237U true CN205453237U (en) | 2016-08-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703439A (en) * | 2016-03-28 | 2016-06-22 | 李志刚 | Power module management system and method for lithium batteries |
| CN106849274A (en) * | 2017-04-05 | 2017-06-13 | 攀枝花学院 | Campatible quick charger |
| CN107271918A (en) * | 2017-07-21 | 2017-10-20 | 广东欧珀移动通信有限公司 | Terminal device and its cell safety monitoring method and monitoring system |
-
2016
- 2016-03-28 CN CN201620244331.4U patent/CN205453237U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703439A (en) * | 2016-03-28 | 2016-06-22 | 李志刚 | Power module management system and method for lithium batteries |
| CN105703439B (en) * | 2016-03-28 | 2019-06-11 | 李志刚 | A kind of lithium battery source module management system and its method |
| CN106849274A (en) * | 2017-04-05 | 2017-06-13 | 攀枝花学院 | Campatible quick charger |
| CN107271918A (en) * | 2017-07-21 | 2017-10-20 | 广东欧珀移动通信有限公司 | Terminal device and its cell safety monitoring method and monitoring system |
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Effective date of registration: 20211110 Address after: 101300 205, floor 2, building 2, yard 11, Yuxi Road, Shunyi District, Beijing Patentee after: Beijing Heyuan Technology Co., Ltd Address before: 102627 401, unit 3, building 6, Zaoyuan community, Daxing District, Beijing Patentee before: Li Zhigang |