CN109474044A - Lithium battery group charging and discharging balance device and equalization methods - Google Patents
Lithium battery group charging and discharging balance device and equalization methods Download PDFInfo
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- CN109474044A CN109474044A CN201811618705.4A CN201811618705A CN109474044A CN 109474044 A CN109474044 A CN 109474044A CN 201811618705 A CN201811618705 A CN 201811618705A CN 109474044 A CN109474044 A CN 109474044A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 217
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007599 discharging Methods 0.000 title claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 63
- 238000003491 array Methods 0.000 claims description 22
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing 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
-
- H02J7/0091—
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
A kind of lithium battery group charging and discharging balance device and equalization methods, belong to battery balanced administrative skill field.Include the following steps: the total voltage of first voltage monitoring unit acquisition lithium battery group and the voltage of each single lithium battery when lithium battery group is in the charging stage and be transferred to centralized control unit, centralized control unit determines high voltage single lithium battery；The high voltage single lithium battery connect conducting with resistance for dissipation by first switch array and second switch array, is shunted by charging current of the resistance for dissipation to high voltage single lithium battery；When the voltage value of each single lithium battery in high voltage single lithium battery and lithium battery group is almost the same, the connection between high voltage single lithium battery and resistance for dissipation is disconnected, and terminates the equilibrium of charging stage.Advantage: improving the equalization efficiency and controllability of entire lithium battery group, guarantees the voltage consistency between each single lithium battery.
Description
Technical field
The invention belongs to battery balanced administrative skill fields, and in particular to a kind of lithium battery group charging and discharging balance device and
Weighing apparatus method.
Background technique
Lithium battery be it is a kind of using lithium metal or lithium alloy as negative electrode material, using the battery of non-aqueous electrolytic solution.
Lithium battery has high storage energy density, and high-specific-power has service life cycle length compared to other kinds of battery, puts certainly
The advantages that electric rate is low, memory-less effect, small environmental pollution.With the continuous maturation of the following battery technology, lithium battery will become most
One of battery of with prospects.However, the operating voltage of single lithium battery is relatively low, therefore generally 3.7V is actually being answered
In, need for multiple single lithium batteries to be used in series to obtain higher operating voltage, and multiple single lithium batteries are by itself
Characteristic limitation not can guarantee absolute consistency in process of production, during storage and in long-term use process, therefore respectively
Charging and discharging capabilities will be different.It is embodied in, during the charging process, high voltage single lithium battery is full of at first, if
Continue to charge and just will appear overshoot phenomenon, and low-voltage single lithium battery also underfill at this time；During discharge, low-voltage list
The electric discharge of body lithium battery terminates, and will appear over-discharge phenomenon if continuing electric discharge, and high voltage single lithium battery is also stored at this time
Remaining capacity, also, being continuously increased with charge and discharge cycles number, the problem of inconsistency meeting between this single lithium battery
Gradually deepen, finally influences the efficiency for charge-discharge and service life of entire serial lithium battery group.
Currently, switching capacity balancer, which is often made to solve each single lithium battery in serial lithium battery group, not can guarantee one
The problem of cause property.Conventional switching capacity balancer mainly includes serving as the capacitor of electric energy transfer carrier and being arranged in capacitor
Switch arrays between single lithium battery.In balancing procedure, it is necessary first to the high voltage monomer lithium electricity in clear battery pack
Pond and low-voltage single lithium battery, and the electric energy of high voltage single lithium battery is filled with capacitor, then the electric energy in capacitor is turned
It moves on in low-voltage single lithium battery.Above-mentioned switching capacity balanced way equalization efficiency with higher, preferable portfolio effect,
However still show in practical applications defective: capacitor can remain some electricity in the discharge process of lithium battery group, and with
The progress of discharge process, the end voltage of single lithium battery therein can gradually decrease and be finally less than the voltage at capacitor both ends,
Result caused by this phenomenon is exactly that can not pass through capacitor in the electric energy of next balancing procedure high voltage appearance single lithium battery
It is transferred in low-voltage single lithium battery, to the phenomenon that switching capacity balanced way failure occur.
In view of above-mentioned prior art, the applicant has made beneficial design, technical solution described below be
It is generated under this background.
Summary of the invention
Top priority of the invention is to provide a kind of lithium battery group charging and discharging balance device, for improving single lithium battery
Between voltage consistency.
Another task of the invention is to provide a kind of lithium battery group cell Equalization Methods for Charge, this method step it is simple and
It can ensure comprehensive embodiment of the technical effect of the lithium battery group charging and discharging balance device.
What top priority of the invention was performed by, a kind of lithium battery group charging and discharging balance device, it is characterised in that:
Including lithium battery group, first voltage monitoring unit, second voltage monitoring unit, temperature monitoring unit, current monitoring unit, Hall
Current sensor, first switch array, supercapacitor, second switch array, resistance for dissipation and centralized control unit, it is described
Lithium battery group include multiple single lithium batteries, lithium battery group respectively with first voltage monitoring unit, temperature monitoring unit and
The connection of first switch array, first switch array are connect with Hall current sensor, supercapacitor and resistance for dissipation, Hall
Current sensor is connect with current monitoring unit and second switch array, second switch array and resistance for dissipation and super electricity
Container connection, supercapacitor connect with second voltage monitoring unit, centralized control unit respectively with first voltage monitoring unit,
Temperature monitoring unit, first switch array, current monitoring unit, second switch array and the connection of second voltage monitoring unit.
What another task of the invention was performed by, a kind of lithium battery group cell Equalization Methods for Charge, which is characterized in that
Include the following steps: when lithium battery group is in the charging stage
S11) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit carry out the average voltage level of the voltage value of each single lithium battery and lithium battery group pair
Than determining high voltage single lithium battery；
S12) centralized control unit issues control command to first switch array and second switch array, makes the high voltage list
Body lithium battery, which is passed through, connect conducting with resistance for dissipation by first switch array and second switch array, by resistance for dissipation to high electricity
The charging current of pressure single lithium battery is shunted, and the charging rate of high voltage single lithium battery is slowed down, and realizes that lithium battery group is filled
The equalization in electric stage；
S13) when the voltage value of each single lithium battery in high voltage single lithium battery and lithium battery group is almost the same, center control
Unit controls first switch array and second switch array, keeps the connection between high voltage single lithium battery and dissipation battery disconnected
It opens, terminates the equilibrium of charging stage；
Include the following steps: when lithium battery group is in discharge regime
S21) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit compare the voltage value of single lithium battery each in lithium battery group, determine high voltage list
Body lithium battery and low-voltage single lithium battery；
S22) centralized control unit issues control command to first switch array, makes the high voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and high voltage single lithium battery charges to supercapacitor, thereon voltage
Value gradually decreases；
S23) current monitoring unit acquires the electric current between supercapacitor and high voltage single lithium battery and is transferred to center control
Unit processed, when the current value between supercapacitor and high voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, disconnect the connection between high voltage single lithium battery and supercapacitor；
S24) centralized control unit issues control command to first switch array, makes the low-voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and supercapacitor charges to low-voltage single lithium battery, low-voltage list
Voltage value on body lithium battery gradually rises therewith, while temperature monitoring unit carries out the temperature of the low-voltage single lithium battery
It samples and sampled data is transferred to centralized control unit,
If sample temperature value is more than the maximum temperature values that low-voltage single lithium battery can be born, centralized control unit control first
Switch arrays make it disconnect the connection with supercapacitor, and pause charges to low-voltage single lithium battery,
If sample temperature value is less than the maximum temperature values that low-voltage single lithium battery can be born, supercapacitor continues to low
The charging of voltage single lithium battery；
S25) when the current value between supercapacitor and low-voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, and first switch array is made to disconnect the company between low-voltage single lithium battery and supercapacitor
It connects；
S26) centralized control unit to second switch array issue control command, make second switch array connection supercapacitor and
Resistance for dissipation consumes the remaining capacity of supercapacitor by resistance for dissipation, while second voltage monitoring unit is to super electricity
Container sample and sampled data is transferred to centralized control unit,
If the voltage value of supercapacitor is greater than 3/4ths of lithium battery group average voltage level, resistance for dissipation will continue to consume
Energy in supercapacitor,
If the voltage value of supercapacitor is less than 3/4ths of lithium battery group average voltage level, centralized control unit is to second
Switch arrays issue control command, so that second switch array is disconnected the connection with supercapacitor and resistance for dissipation, at interval one
To the voltage sample of supercapacitor and judge again after short time.
In a specific embodiment of the invention, when there are single lithium batteries to pass through first switch in lithium battery group
When array connect conducting with supercapacitor, the second switch array disconnects the company between supercapacitor and resistance for dissipation
It connects.
The present invention compared with prior art, has the beneficial effect that due to the above structure, and utilizes super capacitor
The advantages that device charge/discharge speed is fast, efficiency for charge-discharge is high, controllability is good and service life cycle is long, improves entire lithium battery group
Equalization efficiency and controllability；Second switch array is connected to supercapacitor and resistance for dissipation, so that surpassing after equilibrium every time
The extra electricity beyond lithium battery group average voltage level 3/4ths can be dissipated resistance consumption and fall in grade capacitor, when again into
When row is balanced, it can guarantee that there are voltage differences between high voltage single lithium battery and supercapacitor, keep high voltage monomer lithium electric
The extra electricity in pond can be flowed into smoothly in supercapacitor, while can guarantee that high voltage single lithium battery will can surpass rapidly again
Grade capacitor charges to voltage value identical with oneself, and makes to generate voltage between supercapacitor and low-voltage single lithium battery
Difference enables electricity to flow into low-voltage single lithium battery from supercapacitor.
Detailed description of the invention
Fig. 1 is electrical connection block diagram of the invention.
Fig. 2 is equalization methods flow chart of the present invention in the charging stage.
Fig. 3 is equalization methods flow chart of the present invention in discharge regime.
Specific embodiment
Applicant will in conjunction with attached drawing, detailed description of specific embodiments of the present invention below, but applicant is to embodiment
Description be not limitation to technical solution, any design according to the present invention, which changes in the form rather than substance, all should be considered as this
The protection scope of invention.
Referring to Fig. 1, the present invention relates to a kind of lithium battery group charging and discharging balance device, including lithium battery group, first voltage
Monitoring unit, second voltage monitoring unit, temperature monitoring unit, current monitoring unit, Hall current sensor, first switch battle array
Column, supercapacitor, second switch array, resistance for dissipation and centralized control unit, in the present embodiment, first electricity
Monitoring unit and second voltage monitoring unit is pressed to measure chip LTC6802, the temperature monitoring using series battery voltage
Unit uses temperature sensor DS18B20, and the current monitoring unit uses 16 bit A/D converters of ADI company production
AD7988, the Hall current sensor use the high precision closed loop Hall current sensor of Beijing Shi Temei company production
SO1TC2.52V1, the centralized control unit use TMS320LF2407 integrated chip.The first switch array and
Two switch arrays are made of relay switch, and specific structure has many disclosures in the prior art, are omitted and are repeated herein.
The lithium battery group includes multiple single lithium batteries, lithium battery group respectively with first voltage monitoring unit, temperature monitoring unit
And the connection of first switch array, the first voltage monitoring unit are used to acquire the total voltage and lithium battery group of lithium battery group
In each single lithium battery voltage, temperature monitoring unit is for acquiring temperature value of the lithium battery group in charge and discharge process.First
Switch arrays are connect with supercapacitor and resistance for dissipation again, for realizing single lithium battery in lithium battery group and super capacitor
Connection or disconnection between device and resistance for dissipation.Hall current sensor and first switch array, second switch array and electricity
Monitoring unit connection is flowed, for acquiring the current value between supercapacitor and single lithium battery.Second switch array and dissipation
Resistance and supercapacitor connection, for realizing the connection or disconnection between supercapacitor and resistance for dissipation.Super capacitor
Device is connect with second voltage monitoring unit, by second voltage monitoring unit come collection voltages.Centralized control unit is respectively with
One voltage monitoring unit, temperature monitoring unit, first switch array, current monitoring unit, second switch array and the second electricity
Press monitoring unit connection.The centralized control unit is from first voltage monitoring unit, temperature monitoring unit, current monitoring unit
And second voltage monitoring unit receives data, and the electric voltage equalization shape of lithium battery group is analyzed and determined according to the data received
State, to issue control command signal.
The equalization methods of the lithium battery group charging and discharging balance device, charging stage and discharge regime point for lithium battery
Do not include the steps that different.
Referring to Fig. 2, the lithium battery group cell Equalization Methods for Charge includes such as when lithium battery group is in the charging stage
Lower step:
S11) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit convert data, and by the voltage value of each single lithium battery and lithium battery group
Average voltage level compares, and determines that high voltage single lithium battery, the high voltage single lithium battery refer to electric in lithium battery group
It presses highest battery and voltage is higher than lithium battery group average value；
S12) centralized control unit issues control command to first switch array and second switch array, makes the high voltage list
Body lithium battery, which is passed through, connect conducting, high voltage single lithium battery with resistance for dissipation by first switch array and second switch array
Circuit is constituted with resistance for dissipation, is shunted by charging current of the resistance for dissipation to high voltage single lithium battery, slows down high voltage
The charging rate of single lithium battery realizes the equalization of lithium battery group charging stage；
S13) when the voltage value of each single lithium battery in high voltage single lithium battery and lithium battery group is almost the same, center control
Unit controls first switch array and second switch array, keeps the connection between high voltage single lithium battery and dissipation battery disconnected
It opens, terminates the equilibrium of charging stage.
Referring to Fig. 3, the lithium battery group cell Equalization Methods for Charge includes such as when lithium battery group is in discharge regime
Lower step:
S21) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit convert data, and the voltage value of single lithium battery each in lithium battery group is carried out
Comparison, determines that high voltage single lithium battery and low-voltage single lithium battery, the low-voltage single lithium battery refer to lithium battery group
The minimum battery of middle voltage and voltage are lower than lithium battery group average value；
S22) centralized control unit issues control command to first switch array, makes the high voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and high voltage single lithium battery and super capacitor are formed into a loop, by high voltage list
Body lithium battery charges to supercapacitor, and the voltage value of high voltage single lithium battery itself gradually decreases；
S23) current monitoring unit acquires the electric current between supercapacitor and high voltage single lithium battery and is transferred to center control
Unit processed, when the current value between supercapacitor and high voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, disconnect the connection between high voltage single lithium battery and supercapacitor；
S24) centralized control unit issues control command to first switch array, makes the low-voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and supercapacitor and low-voltage single lithium battery are formed into a loop, by super electricity
Container charges to low-voltage single lithium battery, and the voltage value in low-voltage single lithium battery gradually rises therewith, while temperature
Degree monitoring unit sample to the temperature of the low-voltage single lithium battery and sampled data is transferred to centralized control unit,
If sample temperature value is more than the maximum temperature values that low-voltage single lithium battery can be born, centralized control unit control first
Switch arrays make it disconnect the connection with supercapacitor, and pause charges to low-voltage single lithium battery,
If sample temperature value is less than the maximum temperature values that low-voltage single lithium battery can be born, supercapacitor continues to low
The charging of voltage single lithium battery；
S25) when the current value between supercapacitor and low-voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, and first switch array is made to disconnect the company between low-voltage single lithium battery and supercapacitor
It connects；
S26) centralized control unit to second switch array issue control command, make second switch array connection supercapacitor and
Resistance for dissipation, supercapacitor and resistance for dissipation are formed into a loop, and the remaining capacity of supercapacitor is consumed by resistance for dissipation,
Second voltage monitoring unit sample to supercapacitor and sampled data is transferred to centralized control unit simultaneously,
If the voltage value of supercapacitor is greater than 3/4ths of lithium battery group average voltage level, resistance for dissipation will continue to consume
Energy in supercapacitor,
If the voltage value of supercapacitor is less than 3/4ths of lithium battery group average voltage level, centralized control unit is to second
Switch arrays issue control command, so that second switch array is disconnected the connection with supercapacitor and resistance for dissipation, at interval one
To the voltage sample of supercapacitor and judge again after short time.
In above process, when there are single lithium batteries to pass through first switch array and second switch array and super capacitor
When device connection conducting, the second switch array disconnects the connection between supercapacitor and resistance for dissipation.
In the present embodiment, when lithium battery group is in the charging stage, the resistance for dissipation consumes high voltage monomer lithium
The energy of battery guarantees the voltage consistency in lithium battery group between each single lithium battery with this；And when lithium battery group is in
When discharge regime, the supercapacitor becomes the carrier of transfer energy, and after energy transfer, further passes through consumption
Resistance consumption residual amount of energy is dissipated, the voltage consistency in lithium battery group between each single lithium battery is improved.
Claims (3)
1. a kind of lithium battery group charging and discharging balance device, it is characterised in that: including lithium battery group, first voltage monitoring unit,
Two voltage monitoring units, temperature monitoring unit, current monitoring unit, Hall current sensor, first switch array, super capacitor
Device, second switch array, resistance for dissipation and centralized control unit, the lithium battery group include multiple single lithium batteries, lithium
Battery pack is connect with first voltage monitoring unit, temperature monitoring unit and first switch array respectively, first switch array with
Hall current sensor, supercapacitor and resistance for dissipation connection, Hall current sensor and current monitoring unit and the
The connection of two switch arrays, second switch array are connect with resistance for dissipation and supercapacitor, supercapacitor and second voltage
Monitoring unit connection, centralized control unit respectively with first voltage monitoring unit, temperature monitoring unit, first switch array, electricity
Flow monitoring unit, second switch array and the connection of second voltage monitoring unit.
2. a kind of lithium battery group cell Equalization Methods for Charge, which is characterized in that
Include the following steps: when lithium battery group is in the charging stage
S11) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit carry out the average voltage level of the voltage value of each single lithium battery and lithium battery group pair
Than determining high voltage single lithium battery；
S12) centralized control unit issues control command to first switch array and second switch array, makes the high voltage list
Body lithium battery connect conducting with resistance for dissipation by first switch array and second switch array, by resistance for dissipation to high voltage
The charging current of single lithium battery is shunted, and the charging rate of high voltage single lithium battery is slowed down, and realizes lithium battery group charging
The equalization in stage；
S13) when the voltage value of each single lithium battery in high voltage single lithium battery and lithium battery group is almost the same, center control
Unit controls first switch array and second switch array, keeps the connection between high voltage single lithium battery and resistance for dissipation disconnected
It opens, terminates the equilibrium of charging stage；
Include the following steps: when lithium battery group is in discharge regime
S21) during first voltage monitoring unit acquires the total voltage of lithium battery group and the voltage of each single lithium battery and is transferred to
Heart control unit, centralized control unit compare the voltage value of single lithium battery each in lithium battery group, determine high voltage list
Body lithium battery and low-voltage single lithium battery；
S22) centralized control unit issues control command to first switch array, makes the high voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and high voltage single lithium battery charges to supercapacitor, voltage
Value gradually decreases；
S23) current monitoring unit acquires the electric current between supercapacitor and high voltage single lithium battery and is transferred to center control
Unit processed, when the current value between supercapacitor and high voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, disconnect the connection between high voltage single lithium battery and supercapacitor；
S24) centralized control unit issues control command to first switch array, makes the low-voltage single lithium battery via the
One switch arrays connect conducting with supercapacitor, and supercapacitor charges to low-voltage single lithium battery, low-voltage list
Voltage value on body lithium battery gradually rises therewith, while temperature monitoring unit carries out the temperature of the low-voltage single lithium battery
It samples and sampled data is transferred to centralized control unit,
If sample temperature value is more than the maximum temperature values that low-voltage single lithium battery can be born, centralized control unit control first
Switch arrays make it disconnect the connection with supercapacitor, and pause charges to low-voltage single lithium battery,
If sample temperature value is less than the maximum temperature values that low-voltage single lithium battery can be born, supercapacitor continues to low
The charging of voltage single lithium battery；
S25) when the current value between supercapacitor and low-voltage single lithium battery is close to zero, centralized control unit is to
One switch arrays issue control command, and first switch array is made to disconnect the company between low-voltage single lithium battery and supercapacitor
It connects；
S26) centralized control unit to second switch array issue control command, make second switch array connection supercapacitor and
Resistance for dissipation consumes the remaining capacity of supercapacitor by resistance for dissipation, while second voltage monitoring unit is to super electricity
Container sample and sampled data is transferred to centralized control unit,
If the voltage value of supercapacitor is greater than 3/4ths of lithium battery group average voltage level, resistance for dissipation will continue to consume
Energy in supercapacitor,
If the voltage value of supercapacitor is less than 3/4ths of lithium battery group average voltage level, centralized control unit is to second
Switch arrays issue control command, so that second switch array is disconnected the connection with supercapacitor and resistance for dissipation, at interval one
To the voltage sample of supercapacitor and judge again after short time.
3. lithium battery group cell Equalization Methods for Charge according to claim 2, it is characterised in that when in lithium battery group there are
When single lithium battery connect conducting with supercapacitor by first switch array, the second switch array disconnects super electricity
Connection between container and resistance for dissipation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950951A (en) * | 2019-03-21 | 2019-06-28 | 江苏工程职业技术学院 | A kind of lithium battery balance control method and control system with super capacitor |
| CN110021791A (en) * | 2019-03-21 | 2019-07-16 | 江苏工程职业技术学院 | A kind of lithium battery balance protection control method and control system |
| CN111044911A (en) * | 2019-12-25 | 2020-04-21 | 浙江金卡智能水表有限公司 | Circuit and method for quickly calibrating residual electric quantity of lithium battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326439A (en) * | 2013-06-28 | 2013-09-25 | 安科智慧城市技术（中国）有限公司 | Equalization circuit of battery pack and equalization method |
| US20170033571A1 (en) * | 2015-07-31 | 2017-02-02 | Acer Incorporated | Battery balancing apparatus and battery balancing method thereof |
| CN107394840A (en) * | 2017-07-25 | 2017-11-24 | 山东大学 | A kind of battery balanced management circuit topology adaptively switched and control method |
| CN108448179A (en) * | 2018-03-30 | 2018-08-24 | 江苏罗思韦尔电气有限公司 | A kind of method of the battery cell voltage of balancing battery group system |
| CN108539813A (en) * | 2018-04-17 | 2018-09-14 | 上海理工大学 | A kind of lithium-ion-power cell active equalization method |
| CN108808804A (en) * | 2018-07-27 | 2018-11-13 | 广东电网有限责任公司 | A kind of device and control method of the online balanced and core appearance of battery pack |
-
2018
- 2018-12-28 CN CN201811618705.4A patent/CN109474044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326439A (en) * | 2013-06-28 | 2013-09-25 | 安科智慧城市技术（中国）有限公司 | Equalization circuit of battery pack and equalization method |
| US20170033571A1 (en) * | 2015-07-31 | 2017-02-02 | Acer Incorporated | Battery balancing apparatus and battery balancing method thereof |
| CN107394840A (en) * | 2017-07-25 | 2017-11-24 | 山东大学 | A kind of battery balanced management circuit topology adaptively switched and control method |
| CN108448179A (en) * | 2018-03-30 | 2018-08-24 | 江苏罗思韦尔电气有限公司 | A kind of method of the battery cell voltage of balancing battery group system |
| CN108539813A (en) * | 2018-04-17 | 2018-09-14 | 上海理工大学 | A kind of lithium-ion-power cell active equalization method |
| CN108808804A (en) * | 2018-07-27 | 2018-11-13 | 广东电网有限责任公司 | A kind of device and control method of the online balanced and core appearance of battery pack |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950951A (en) * | 2019-03-21 | 2019-06-28 | 江苏工程职业技术学院 | A kind of lithium battery balance control method and control system with super capacitor |
| CN110021791A (en) * | 2019-03-21 | 2019-07-16 | 江苏工程职业技术学院 | A kind of lithium battery balance protection control method and control system |
| CN111044911A (en) * | 2019-12-25 | 2020-04-21 | 浙江金卡智能水表有限公司 | Circuit and method for quickly calibrating residual electric quantity of lithium battery |
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Application publication date: 20190315 |