CN105098933B - A kind of battery cell collecting and detecting device - Google Patents
A kind of battery cell collecting and detecting device Download PDFInfo
- Publication number
- CN105098933B CN105098933B CN201510628996.5A CN201510628996A CN105098933B CN 105098933 B CN105098933 B CN 105098933B CN 201510628996 A CN201510628996 A CN 201510628996A CN 105098933 B CN105098933 B CN 105098933B
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- monomer
- voltage
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- battery
- acquisition
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
A kind of battery cell collecting and detecting device, including monomer acquisition protection circuit, monomer equalizing circuit, filter circuit and monomer acquisition chip.Monomer acquisition protection circuit connecting single batteries and filter circuit; monomer equalizing circuit is electrically connected to by monomer protection between the positive and negative anodes of monomer; filter circuit is connected on after monomer acquisition protection circuit and monomer equalizing circuit; connect monomer acquisition chip; the present apparatus can realize safeguard protection and the battery balanced on off state of Accurate Diagnosis of single battery acquisition testing circuit, it is ensured that the safety and battery pack of battery acquisition system are not damaged by equilibrium.
Description
Technical field
The present invention relates to technical field of battery management, more particularly to a kind of battery cell acquisition testing unit.
Background technology
As society continues to develop, battery is as a kind of energy storage device, using more and more extensive.It is electrically set by original
Standby automotive field, the energy-accumulating power station field etc. of field till now, battery have become indispensable in people's life and production
A part.
Modern electrical equipment is continuously increased power demand, cause battery powered by original single-unit power supply to
Present multiple batteries associating power supply, the number of battery pack are continuously increased with the increase of electrical equipment power.For anti-abuse
The battery of difference, such as lithium battery, the difference of monomer crosses the electricity quantity storage capacity that conference causes entire battery pack in entire battery pack
It reduces, and influences the service life of battery pack.On the other hand, being continuously increased with battery storage energy, battery is because of misapplication
The event of explosion, catching fire is caused also constantly to occur, the safety of battery also becomes particularly important.
Therefore, accurate monomer acquisition testing is only carried out, progress safeguard protection is detected to monomer and accurate failure is examined
It is disconnected, it could preferably ensure the safety and service life of battery pack.
In existing monomer acquisition testing technology, monomer acquisition testing circuit function mainly has following two points：
1, protection is filtered to the input terminal of battery cell detection, the protection circuit of existing monomer detection generally only acquires
It is protected with simple resistance or zener diode, both guard methods have at 2 points, first point, resistance protection side
Method can not select suitable protective resistance, the resistance value of protective resistance to can be very good protection circuit, but the mistake of shadow monomer acquisition greatly
It is poor big.The error of the small then monomer acquisition of resistance value of protective resistance is small, but good protection can not be played to circuit；Second point, surely
Diode protection is pressed, when the voltage for being input to zener diode both ends is higher, when the duration is longer, zener diode overheat is burnt
It ruins, loses protective effect.
2, the monomer higher to voltage carries out equalization discharge, and the equalizing circuit of existing monomer detection can only be realized simply
Balanced is switched on and off control, and whether the indistinguishable equilibrium of circuit itself is normally-open or turns off.When equalizer switch is because of damage
And when can not disconnect, circuit None- identified can cause the continuous discharge of battery cell, cause battery damage.
Invention content
The present invention to solve the above-mentioned problems, proposes a kind of battery cell collecting and detecting device, can realize single battery
The safeguard protection of acquisition testing circuit and the battery balanced on off state of Accurate Diagnosis, it is ensured that the safety and battery of battery acquisition system
Group is not damaged by equilibrium.
The present invention is realized by following scheme：
The present invention proposes a kind of battery cell collecting and detecting device, including monomer acquisition protection circuit, monomer equalizing circuit,
Filter circuit and monomer acquisition chip.
The monomer acquisition protection circuit connecting single batteries and filter circuit, it is different suddenly to there is voltage in battery cell
Monomer equalizing circuit, filter circuit and the monomer of instantaneous protection rear end are adopted when abnormal short circuit overcurrent occur in often raising or acquisition chip
Collect chip.
The monomer equalizing circuit by monomer protection be electrically connected to the positive and negative anodes of monomer between, in monomer voltage ratio
When the voltage of other monomers is higher in battery pack, equalization discharge is carried out to monomer, keeps the voltage base of all monomers in battery pack
This is equal.
The filter circuit is connected on after monomer acquisition protection circuit and monomer equalizing circuit, and connection monomer acquires core
Piece inputs to monomer acquisition chip after being filtered monomer battery voltage, ensure the monomer voltage of monomer acquisition chip acquisition
It is noiseless.
The safeguard protection of single battery acquisition testing circuit can be realized using the present apparatus and Accurate Diagnosis is battery balanced opens
Off status, it is ensured that the safety and battery pack of battery acquisition system are not damaged by equilibrium.
Description of the drawings
Fig. 1, the principle of the present invention block diagram；
The monomer acquisition protection circuit connection diagram of Fig. 2, the present invention；
The monomer equalizing circuit connection figure of Fig. 3, the present invention.
Specific implementation mode
To make the purpose of the present invention, technical solution definitely, the present invention is done further specifically below in conjunction with attached drawing
It is bright.
Referring to Fig. 1, the principle of this battery cell collecting and detecting device includes monomer acquisition protection circuit 1-N, monomer equilibrium
Circuit, filter circuit and monomer acquisition chip：
The monomer acquisition protection circuit 1-N is connect with the battery cell positive and negative anodes in battery pack, when monomer voltage occurs
When abnormal raising, monomer acquisition protection circuit acts rapidly, protection monomer equalizing circuit, filter circuit and monomer acquisition chip；
When equalizing circuit occurs abnormal short-circuit, monomer acquisition protection circuit acts rapidly, prevents battery cell from being crossed by high current and puts, protects
Protect battery cell.
The monomer equalizing circuit is electrically connected to the positive and negative anodes of battery cell by monomer protection, and core is acquired by monomer
Being switched on and off for equalizer switch inside piece control monomer equalizing circuit carries out equalization discharge to battery cell.
The filter circuit is connected on after monomer acquisition protection circuit and monomer equalizing circuit, is filtered out and is folded on monomer voltage
Filtered monomer voltage is sent into monomer voltage acquisition chip, ensures the list of monomer acquisition chip acquisition by the interference voltage added
Bulk voltage is noiseless.
Fig. 2 is the connection figure of monomer acquisition protection circuit, and 1,2 be fuse in figure, be connected to battery cell anode and
Cathode, 3 be power voltage-regulator diode, when battery cell electric voltage exception increases, 3 breakdown conducting of zener diode, and big electricity
Stream flows through fuse 1,2, and when the electric voltage exception raised time is Microsecond grade, fuse will not be blown, but voltage-stabiliser tube will
Voltage stabilization prevents surge voltage from being damaged to circuit in protection voltage range.When electric voltage exception rise time is millisecond
When grade, fuse is blown, and is disconnected the connection of abnormal battery cell and monomer acquisition testing unit, realizes monomer acquisition testing
The overvoltage protection of element circuit.
Fig. 3 is the connection figure of monomer equalizing circuit, and 4,5 be equalizing resistance R4, R5 in figure, and 6 be zener diode, and 7 is open
Close metal-oxide-semiconductor.When some battery cell voltage is higher than other battery cell voltages in battery pack, monomer acquisition chip exports low electricity
SN is put down, control switch metal-oxide-semiconductor 7 is connected, and battery cell passes through fuse 1, equalizing resistance 4, switch metal-oxide-semiconductor 7, equalizing resistance 5
Discharge loop, which is formed, with fuse 2 carries out equalization discharge.Zener diode 6 is used to protect the poles GS of switch metal-oxide-semiconductor 7, when the poles GS
When voltage is more than metal-oxide-semiconductor protection voltage, zener diode conducting, by GS voltage clampings within the scope of safe voltage.
When the switching tube 7 and equalizing resistance 4,5 occur abnormal short-circuit, cause the anode of battery cell and cathode directly short
Road, at this time high current flow through monomer acquisition protection circuit in fuse 1,2, fuse 1,2 rapidly fuse, realize overcurrent protect
Shield, prevents battery cell from being damaged by sustained short-circuit.
When the switch metal-oxide-semiconductor 7 turns off, the voltage U between CN and CN-1 is battery cell voltage Us, and switchs metal-oxide-semiconductor 7
When conducting, the voltage between CN and CN-1 is calculated according to formula 1,
The value for selecting suitable R4 and R5, compare switch metal-oxide-semiconductor conducting when and shutdown when two states under CN and CN-1 it
Between voltage, if voltage is equal, monomer equilibrium equalizing circuit breaks down, if metal-oxide-semiconductor be connected when CN and CN-1 between
Voltage voltage between CN and CN-1 when being metal-oxide-semiconductor shutdown R5/ (R4+R5), then monomer equalizing circuit fault-free.
Claims (1)
1. a kind of battery cell collecting and detecting device, which is characterized in that including monomer acquire protection circuit, monomer equalizing circuit,
Filter circuit and monomer acquisition chip；
, there is voltage in battery cell and increase extremely suddenly in the monomer acquisition protection circuit connecting single batteries and filter circuit
Or the monomer equalizing circuit, filter circuit and monomer that instantaneous protection rear end when abnormal short circuit overcurrent occurs in acquisition chip acquire core
Piece；
The monomer equalizing circuit by monomer protection be electrically connected to the positive and negative anodes of single battery between, in monomer battery voltage
When voltage than other single batteries in battery pack is higher, equalization discharge is carried out to single battery, keeps all lists in battery pack
The voltage of body battery is of substantially equal；
The filter circuit is connected on after monomer acquisition protection circuit and monomer equalizing circuit, connects monomer acquisition chip, will
Monomer battery voltage inputs to monomer acquisition chip after being filtered, ensure the monomer voltage of monomer acquisition chip acquisition without dry
It disturbs；
The monomer acquisition protection circuit includes fuse 1,2 and power voltage-regulator diode（3）, fuse 1,2 is connected in series with
Between the anode and cathode of battery cell, power voltage-regulator diode（3）It is connected between fuse 1,2, works as battery cell
When electric voltage exception increases, zener diode（3）Breakdown conducting, high current flows through fuse 1,2, when electric voltage exception is raised
Between when being Microsecond grade, fuse will not be blown, but voltage-stabiliser tube by voltage stabilization in protection voltage range, prevent surge electric
Pressure damages circuit；
The monomer equalizing circuit includes equalizing resistance R4, R5, zener diode（6）With switch metal-oxide-semiconductor（7）；When in battery pack
When some battery cell voltage is higher than other battery cell voltages, monomer acquisition chip exports low level to SN, control switch MOS
Pipe（7）Conducting, battery cell pass through fuse 1, equalizing resistance R4, switch metal-oxide-semiconductor（7）, equalizing resistance R5 and fuse 2 formation
Discharge loop carries out equalization discharge；Zener diode（6）Metal-oxide-semiconductor is switched for protecting（7）The poles GS, when GS pole tensions are more than
When metal-oxide-semiconductor protects voltage, zener diode conducting, by GS voltage clampings within the scope of safe voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628996.5A CN105098933B (en) | 2015-09-28 | 2015-09-28 | A kind of battery cell collecting and detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628996.5A CN105098933B (en) | 2015-09-28 | 2015-09-28 | A kind of battery cell collecting and detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105098933A CN105098933A (en) | 2015-11-25 |
| CN105098933B true CN105098933B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510628996.5A Active CN105098933B (en) | 2015-09-28 | 2015-09-28 | A kind of battery cell collecting and detecting device |
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| Country | Link |
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| CN (1) | CN105098933B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249099B (en) * | 2016-08-26 | 2018-12-07 | 北京海博思创科技有限公司 | Voltage acquisition line open-circuit fault detection device and method and battery management system |
| CN109742743A (en) * | 2018-12-03 | 2019-05-10 | 欣旺达电子股份有限公司 | Wide scope high voltage samples clamping protective circuit |
| CN113253113B (en) * | 2021-02-26 | 2022-05-06 | 重庆长安新能源汽车科技有限公司 | Method for predicting consistency fault of power battery |
| CN112986834B (en) * | 2021-02-26 | 2023-08-15 | 深蓝汽车科技有限公司 | Battery safety monitoring method and system based on voltage sequencing |
| CN112803569A (en) * | 2021-03-16 | 2021-05-14 | 李涛 | Storage battery emergency power supply device and emergency starting method |
| CN114660493B (en) * | 2022-05-20 | 2022-08-30 | 苏州恒美电子科技股份有限公司 | Battery cell information acquisition circuit and battery cell internal resistance acquisition method |
| CN115436782A (en) * | 2022-09-05 | 2022-12-06 | 楚能新能源股份有限公司 | Fault return detection circuit and detection method of lithium battery passive equalization circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201298739Y (en) * | 2008-10-31 | 2009-08-26 | 比亚迪股份有限公司 | Battery pack voltage balancer |
| CN201594570U (en) * | 2009-11-18 | 2010-09-29 | 徐成宪 | Rechargeable battery equalization management system |
| CN201821092U (en) * | 2010-10-21 | 2011-05-04 | 天津光电通信技术有限公司 | Protective circuit for lithium power battery packs |
| CN103595233A (en) * | 2012-08-17 | 2014-02-19 | 苏州工业园区新宏博通讯科技有限公司 | Input protection circuit |
| CN202797907U (en) * | 2012-08-31 | 2013-03-13 | 惠州市亿能电子有限公司 | Potential failure safety protection circuit of passive equalization circuit |
| CN103019234B (en) * | 2012-12-26 | 2014-11-19 | 中国汽车技术研究中心 | Battery management and acquisition subsystem of new energy vehicle and method for controlling battery management and acquisition subsystem |
| CN104734115A (en) * | 2015-02-10 | 2015-06-24 | 程永 | Simple overvoltage protector |
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2015
- 2015-09-28 CN CN201510628996.5A patent/CN105098933B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105098933A (en) | 2015-11-25 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
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| GR01 | Patent grant | ||
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20151125 Assignee: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Assignor: Chongqing Changan Automobile Co.,Ltd.|CHONGQING CHANG'AN NEW ENERGY AUTOMOBILE Co.,Ltd. Contract record no.: 2018500000018 Denomination of invention: Battery monomer acquisition detection device Granted publication date: 20180713 License type: Exclusive License Record date: 20181121 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190108 Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Co-patentee before: CHONGQING CHANG'AN NEW ENERGY AUTOMOBILE Co.,Ltd. Patentee before: Chongqing Changan Automobile Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee after: Deep Blue Automotive Technology Co.,Ltd. Address before: 401133 room 208, 2 house, 39 Yonghe Road, Yu Zui Town, Jiangbei District, Chongqing Patentee before: CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |