CN109742828A - It is a kind of that method and its circuit are put based on ups serial lithium battery - Google Patents
It is a kind of that method and its circuit are put based on ups serial lithium battery Download PDFInfo
- Publication number
- CN109742828A CN109742828A CN201910183869.7A CN201910183869A CN109742828A CN 109742828 A CN109742828 A CN 109742828A CN 201910183869 A CN201910183869 A CN 201910183869A CN 109742828 A CN109742828 A CN 109742828A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- control
- battery core
- battery
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Method and its circuit are put based on ups serial lithium battery the invention discloses a kind of, electric discharge road is used for the battery pack containing several battery cores, including Acquisition Circuit, control circuit, switching circuit, voltage amplification comparison circuit, disconnection of the control circuit to control the switching circuit, conducting of the voltage amplification comparison circuit to control the switching circuit.The voltage for putting single battery core of the method for detecting battery pack, is discharged by single battery core of the control switch circuit to overtension, until the voltage of the single battery core is mutually balanced, stops discharging to single battery core by control switch circuit.The present invention can effectively to occur in lithium battery group the case where a few batteries overtensions carry out balanced discharge reparation, the single battery core in entire battery pack is allowed to reach emptying state, the problem of inconsistency in battery pack can be well solved, the service life of battery is promoted, there is good practicability.
Description
Technical field
The invention belongs to lithium battery equalizing systems and control mode field, and in particular to one kind is based on ups serial lithium battery
Put method and its circuit.
Background technique
UPS, i.e. uninterruptible power supply are that battery (mostly plumbic acid maintenance-free battery) is connected with host, pass through master
The system equipment that the modular circuits such as machine inverter convert direct current.Nowadays social, ups power is obtained as a kind of important power supply
To extensive use.Energy storage device is the heart of UPS, is generally substituted using lithium battery.With charge efficiency is high, energy density is high,
The advantages that small in size, light-weight, environmentally friendly, long service life.Lithium battery group is mentioned as ups power important composition component
High lithium battery service performance becomes most important.
Currently, the lithium battery group for UPS generally uses series system, and the demand according to UPS to battery voltage, battery
Group is composed in series using several single batteries.This kind of scenario-frame is simple, but reliability is lower.
Ups system is after carrying out multiple charge and discharge, so that can not accomplish completely the same, appearance in terms of battery core voltage consistency
The higher situation of a few economize on electricity core voltages.And domestic lithium battery group usually constitutes use by multiple battery cores in series and parallel, and outer
The difference of portion's environment generate the carrying capacity of different battery cores after passing through multiple charge and discharge cycles when battery pack can centainly
Difference, there is the unbalanced phenomenon of voltage.If not repaired this unbalanced phenomenon, will eventually influence whole
Service performance.And usage amount maximum, which is also the scheme of most mainstream, on the market at present is filled to the battery core of low capacity in battery pack
Electricity.Show after battery pack charging complete by a large amount of test result, the voltage of only a few economize on electricity cores is higher, big portion
The battery core voltage divided is all scheme that is relatively low, such as charging at this time according to the battery core to low-voltage in battery pack, it will
The time is expended, working efficiency is low, and at high cost is unfavorable for volume production.
Summary of the invention
The present invention above-mentioned existing product there are aiming at the problem that, provide a kind of saving time, work efficiency is high, and cost
It is low, method and its circuit are put based on ups serial lithium battery conducive to volume production.
It is a kind of that method is put based on ups serial lithium battery,
The voltage for detecting the single battery core of battery pack, is discharged by single battery core of the control switch circuit to overtension,
Until the voltage of the single battery core is mutually balanced, single battery core is stopped discharging by control switch circuit.
A kind of electric discharge road based on ups serial lithium battery, for the battery pack containing several battery cores, including
Acquisition Circuit is connected with each single battery core in the battery pack, for detect the voltage of the battery core with
Obtain sampled voltage；
Control circuit, the relatively size of the sampled voltage and predeterminated voltage, and export control signal；
Switching circuit, for receiving the discharge condition for controlling signal and controlling battery core；
Voltage amplification comparison circuit, for amplifying the sampled voltage, and by amplified voltage and reference voltage
It is compared, forms control signal；
Wherein, disconnection of the control circuit to control the switching circuit, the voltage amplification comparison circuit are used
To control the conducting of the switching circuit.
Preferably, the output end of Acquisition Circuit described in the input terminal connection of the control circuit, the control
The output end connection of the circuit switching circuit；
The output end of the input terminal connection of the voltage amplification comparison circuit Acquisition Circuit, the voltage amplification ratio
The switching circuit described compared with the output end connection of circuit.
Preferably, the control circuit includes control chip, control chip detects the voltage of battery core by VDD pin
Sampled voltage is obtained, when the sampled voltage is less than predeterminated voltage, the DO pin of the control chip becomes high-impedance state
State controls the switching circuit and disconnects.
Preferably, the switching circuit includes metal-oxide-semiconductor, the pole the G connection of the metal-oxide-semiconductor control circuit
The output end of output end and the voltage amplification comparison circuit, the pole D of the metal-oxide-semiconductor connect the battery core list with the pole S
Body.
Preferably, the voltage amplification comparison circuit includes operational amplifier and comparator, the operation amplifier
The reverse phase of the input terminal connection of the device sampled voltage, the output end connection of the operational amplifier comparator is defeated
Enter end, the non-inverting input terminal of the comparator connects reference voltage, the output end output control signal of the comparator.
After using the above structure, compared with prior art, the present invention having the advantage that
The technical solution of the application puts method and its circuit based on ups serial lithium battery to be a kind of.It can be effectively right
Occur the progress balanced discharge reparation of the case where a few batteries overtensions in lithium battery group, makes the monomer in entire battery pack electric
Core reaches emptying state (that is, the voltage of single battery core is almost equal), can well solve inconsistency in battery pack
Problem promotes the service life of battery, preferably improves the utilization rate of battery capacity.Most of equalization discharge currently on the market
Circuit is all to be designed by conductive discharge, and the design is by operational amplifier, and comparator carrys out the logical of Linear Control metal-oxide-semiconductor
Break to control electric discharge, enhance the stability and reliability of the design, and the design circuit when carrying out equalization discharge without
It can be automatically stopped after needing human attendance, battery to be put into preset value, there is good practicability.
Detailed description of the invention
Fig. 1 is schematic block circuit diagram of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Battery pack balancing technology is to ensure one of the key technology of energy-storage system normal operation.It often need to be by several lithium battery lists
Body battery strings are together in parallel to obtain biggish stored energy capacitance and higher power output, and the energy storage size of battery pack depends on most
The charge-discharge characteristic of a poor batteries.Since battery manufacturing process itself has certain discrete feature, and as battery makes
With the growth of time, the mutual difference of battery performance is more protruded.If balanced management is not carried out to battery, with charge and discharge
Circulation carries out, and the inconsistency between single battery will cause charge less electricity, overcharge and overdischarge, seriously affects the use of battery pack
Performance and service life, and will cause serious security risk.It is therefore desirable to judge monomer and battery by battery management system
Group state, optimizes outside batteries parameter, increases battery life, protects battery.
Lithium battery group in actual use, a few economize on electricity cores electricity few in number generally can all occur after electric discharge
Pressure is higher than remaining battery core voltage, and the charge-discharge performance of whole group battery pack is caused to be affected；Current most mainstream on the market is done
Method is to carry out charging process to the battery core of most of low capacity, or configure a maintenance power supply to each single battery core, both
Scheme is not there are waste of energy, is exactly to solve that cost is excessively high, volume is bigger than normal and inefficient.
A kind of electric discharge road based on UPS serial lithium battery of the application research and development, principle is higher to wherein voltage
A few economize on electricity cores discharge, the technology to charge instead of the battery core of original pair of low voltage.Because only having in battery pack
It is a few economize on electricity cores voltages be it is higher, most battery core voltage be all it is relatively low, at this time such as according to electricity low in battery pack
The scheme that the battery core of pressure charges, it will expend the time, working efficiency is low, and it is at high cost be unfavorable for volume production, so of the invention
The time will more be saved, work efficiency is high, it is at low cost and be conducive to volume production.
It is a kind of that method is put based on ups serial lithium battery,
The voltage for detecting the single battery core of battery pack, is discharged by single battery core of the control switch circuit to overtension,
Until the voltage of the single battery core is mutually balanced, single battery core is stopped discharging by control switch circuit.
A kind of electric discharge road based on ups serial lithium battery, for the battery pack containing several battery cores, including
Acquisition Circuit is connected with each single battery core in the battery pack, for detect the voltage of the battery core with
Obtain sampled voltage；
Control circuit, the relatively size of the sampled voltage and predeterminated voltage, and export control signal；
Switching circuit, for receiving the discharge condition for controlling signal and controlling battery core；
Voltage amplification comparison circuit, for amplifying the sampled voltage, and by amplified voltage and reference voltage
It is compared, forms control signal；
Wherein, disconnection of the control circuit to control the switching circuit, the voltage amplification comparison circuit are used
To control the conducting of the switching circuit.
Preferably, the output end of Acquisition Circuit described in the input terminal connection of the control circuit, the control
The output end connection of the circuit switching circuit；
The output end of the input terminal connection of the voltage amplification comparison circuit Acquisition Circuit, the voltage amplification ratio
The switching circuit described compared with the output end connection of circuit.
More specifically, the Acquisition Circuit includes the VDD pin connection institute of the control chip in the control circuit
The circuit of battery core monomer composition in the battery pack stated.
As shown in Figure 1, control chip is detected by VDD pin preferably, the control circuit includes control chip
The voltage of battery core obtains sampled voltage, when the sampled voltage is less than predeterminated voltage, the DO pin of the control chip
Become high-impedance state state, controls the switching circuit and disconnect.The control chip uses Li battery protection IC S-
8209A detects battery core monomer voltage by VDD pin, when battery enters over-discharge state, when vdd voltage is less than over-discharge
When electro-detection voltage, the DO pin of chip becomes high-impedance state state, and the final metal-oxide-semiconductor that controls disconnects, to reach the function for stopping electric discharge
Energy.
As shown in Figure 1, preferably, the switching circuit includes metal-oxide-semiconductor, described in the pole the G connection of the metal-oxide-semiconductor
The pole D of the output end of the output end of control circuit and the voltage amplification comparison circuit, the metal-oxide-semiconductor connects institute with the pole S
The battery core monomer stated.When S-8209A chip detects battery core voltage lower than 2.5v, high-impedance state is become from DO pin, passes through three
Pole pipe controls the pole G for being connected to metal-oxide-semiconductor, controls the disconnection of metal-oxide-semiconductor.Metal-oxide-semiconductor is controlled by the low and high level of comparator output
Conducting.
As shown in Figure 1, preferably, the voltage amplification comparison circuit includes operational amplifier and comparator, it is described
Operational amplifier the input terminal connection sampled voltage, the output end connection of the operational amplifier comparison
The inverting input terminal of device, the non-inverting input terminal of the comparator connect reference voltage, the output end output of the comparator
Control signal.Sampled voltage on sampling resistor is amplified into certain multiple by operational amplifier, and by the output of amplifier
As the inverting input terminal of comparator, the reference voltage generated with TL431 voltage-stablizer is compared, and is exported by comparing size high
Low level controls the on-off of MOS, thus to control electric discharge.
In the description of this specification, reference term " a kind of embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms
It may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
What can be combined in any suitable manner in one or more embodiment or examples.
Although the embodiments of the present invention has been shown and described above, but it is not to be construed as the limit to claim
System.The present invention is not limited only to above embodiments, and specific structure is allowed to vary, all protections in independent claims of the present invention
Made various change is within the scope of the invention in range.
Claims (6)
1. a kind of put method based on ups serial lithium battery, it is characterised in that:
The voltage for detecting the single battery core of battery pack, is discharged by single battery core of the control switch circuit to overtension,
Until the voltage of the single battery core is mutually balanced, single battery core is stopped discharging by control switch circuit.
2. a kind of electric discharge road based on ups serial lithium battery, for containing the battery pack of several battery cores, it is characterised in that: packet
It includes
Acquisition Circuit is connected with each single battery core in the battery pack, for detect the voltage of the battery core with
Obtain sampled voltage；
Control circuit, the relatively size of the sampled voltage and predeterminated voltage, and export control signal；
Switching circuit, for receiving the discharge condition for controlling signal and controlling battery core；
Voltage amplification comparison circuit, for amplifying the sampled voltage, and by amplified voltage and reference voltage
It is compared, forms control signal；
Wherein, disconnection of the control circuit to control the switching circuit, the voltage amplification comparison circuit are used
To control the conducting of the switching circuit.
3. a kind of electric discharge road based on ups serial lithium battery according to claim 2, it is characterised in that:
The output end of the input terminal connection of the control circuit Acquisition Circuit, the output end of the control circuit connect
Connect the switching circuit；
The output end of the input terminal connection of the voltage amplification comparison circuit Acquisition Circuit, the voltage amplification ratio
The switching circuit described compared with the output end connection of circuit.
4. a kind of electric discharge road based on ups serial lithium battery according to claim 2, it is characterised in that
The control circuit includes control chip, and control chip obtains sampled voltage by the voltage that VDD pin detects battery core,
When the sampled voltage is less than predeterminated voltage, the DO pin of the control chip becomes high-impedance state state, described in control
Switching circuit disconnect.
5. a kind of electric discharge road based on ups serial lithium battery according to claim 2, it is characterised in that:
The switching circuit includes metal-oxide-semiconductor, the output end of the pole G of the metal-oxide-semiconductor connection control circuit with it is described
Voltage amplification comparison circuit output end, the pole D of the metal-oxide-semiconductor connects the battery core monomer with the pole S.
6. a kind of electric discharge road based on ups serial lithium battery according to claim 2, it is characterised in that:
The voltage amplification comparison circuit includes operational amplifier and comparator, the input terminal connection of the operational amplifier
The sampled voltage, the inverting input terminal of the output end connection of the operational amplifier comparator, the ratio
Non-inverting input terminal compared with device connects reference voltage, the output end output control signal of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183869.7A CN109742828A (en) | 2019-03-12 | 2019-03-12 | It is a kind of that method and its circuit are put based on ups serial lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183869.7A CN109742828A (en) | 2019-03-12 | 2019-03-12 | It is a kind of that method and its circuit are put based on ups serial lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109742828A true CN109742828A (en) | 2019-05-10 |
Family
ID=66370239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910183869.7A Pending CN109742828A (en) | 2019-03-12 | 2019-03-12 | It is a kind of that method and its circuit are put based on ups serial lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109742828A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201398088Y (en) * | 2009-05-15 | 2010-02-03 | 冠捷投资有限公司 | Battery balanced circuit and power supply system |
| CN102255358A (en) * | 2011-07-12 | 2011-11-23 | 快特电波科技(苏州)有限公司 | External equalizing device of series-wound lithium ion battery pack |
| CN102545335A (en) * | 2012-01-16 | 2012-07-04 | 海能达通信股份有限公司 | Balanced charge-discharge circuit and balanced charge-discharge method |
| CN103683358A (en) * | 2012-09-20 | 2014-03-26 | 株式会社理光 | Battery voltage balancing device |
| CN104201654A (en) * | 2014-09-10 | 2014-12-10 | 安徽朗越环境工程有限公司 | Battery pack balance protecting system and method |
| CN107040025A (en) * | 2017-05-10 | 2017-08-11 | 国网江西省电力公司电力科学研究院 | A kind of implementation method of the special integrated circuit of single battery |
| CN206461381U (en) * | 2016-11-22 | 2017-09-01 | 海悦高科电池技术（大连）有限公司 | A kind of Li-ion batteries piles charge-discharge protection circuit |
| CN108512280A (en) * | 2018-05-04 | 2018-09-07 | 厦门芯阳科技股份有限公司 | A kind of series battery equalizing charge controlling circuit and control method |
| CN209516683U (en) * | 2019-03-12 | 2019-10-18 | 杭州微慕科技有限公司 | A kind of electric discharge road based on ups serial lithium battery |
-
2019
- 2019-03-12 CN CN201910183869.7A patent/CN109742828A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201398088Y (en) * | 2009-05-15 | 2010-02-03 | 冠捷投资有限公司 | Battery balanced circuit and power supply system |
| CN102255358A (en) * | 2011-07-12 | 2011-11-23 | 快特电波科技(苏州)有限公司 | External equalizing device of series-wound lithium ion battery pack |
| CN102545335A (en) * | 2012-01-16 | 2012-07-04 | 海能达通信股份有限公司 | Balanced charge-discharge circuit and balanced charge-discharge method |
| CN103683358A (en) * | 2012-09-20 | 2014-03-26 | 株式会社理光 | Battery voltage balancing device |
| CN104201654A (en) * | 2014-09-10 | 2014-12-10 | 安徽朗越环境工程有限公司 | Battery pack balance protecting system and method |
| CN206461381U (en) * | 2016-11-22 | 2017-09-01 | 海悦高科电池技术（大连）有限公司 | A kind of Li-ion batteries piles charge-discharge protection circuit |
| CN107040025A (en) * | 2017-05-10 | 2017-08-11 | 国网江西省电力公司电力科学研究院 | A kind of implementation method of the special integrated circuit of single battery |
| CN108512280A (en) * | 2018-05-04 | 2018-09-07 | 厦门芯阳科技股份有限公司 | A kind of series battery equalizing charge controlling circuit and control method |
| CN209516683U (en) * | 2019-03-12 | 2019-10-18 | 杭州微慕科技有限公司 | A kind of electric discharge road based on ups serial lithium battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101409455B (en) | Voltage balance apparatus and method for battery system | |
| CN1316710C (en) | Accumulator, super capacitor charge-discharge equalizing method and equipment | |
| US20230027457A1 (en) | A Parallel Charging and Discharging Management System of Multiple Batteries | |
| CN203747439U (en) | Rechargeable battery pack structure capable of shortening charging time | |
| CN102082307A (en) | Method and system for parallel use of lithium battery modules | |
| CN105449296A (en) | Nondestructive equilibrium management system of modular high-power battery pack | |
| CN106059034A (en) | Electrical system of wireless data transmission device and power supply method | |
| CN205945194U (en) | Electric system of wireless data transmission device | |
| CN102280912A (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN109347173B (en) | Battery pack balance control circuit and method based on switched capacitor | |
| CN116470603A (en) | Method for preventing circulation of battery clusters in parallel connection | |
| CN207542814U (en) | A kind of emergency starting power supply | |
| CN206195384U (en) | Intelligent balanced charging and discharging circuit device of lithium cell group that can communicate | |
| CN203504219U (en) | Parallel charging maintenance device of battery group | |
| CN103501036B (en) | A kind of charging and discharging lithium battery pilot circuit | |
| CN209516683U (en) | A kind of electric discharge road based on ups serial lithium battery | |
| CN107294163B (en) | Storage battery state inspection method and device with storage battery monomer balancing function | |
| CN209709744U (en) | A kind of communication base station power supply system that retired power battery echelon utilizes | |
| CN107257147A (en) | A kind of monitoring management system and method based on lithium ion super electric capacity | |
| CN209356645U (en) | A kind of charge/discharge detection instrument of storage battery | |
| CN111181224A (en) | Charging system for multi-section series battery pack and charging method thereof | |
| CN207588487U (en) | Shared power-supply device and system | |
| CN207398829U (en) | A kind of intelligent power system based on DSP | |
| TWI635691B (en) | Battery pack active balancing system | |
| CN109742828A (en) | It is a kind of that method and its circuit are put based on ups serial lithium battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |