CN104377753A - Battery management system with field-effect tube breakdown detection function - Google Patents
Battery management system with field-effect tube breakdown detection function Download PDFInfo
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- CN104377753A CN104377753A CN201410505845.6A CN201410505845A CN104377753A CN 104377753 A CN104377753 A CN 104377753A CN 201410505845 A CN201410505845 A CN 201410505845A CN 104377753 A CN104377753 A CN 104377753A
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- semiconductor
- central processing
- battery
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 230000005669 field effect Effects 0.000 title claims abstract description 15
- 230000015556 catabolic process Effects 0.000 title abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims description 52
- 239000000178 monomer Substances 0.000 claims description 45
- 230000004224 protection Effects 0.000 abstract description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- 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
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
-
- H02J7/0021—
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- H02J7/0026—
-
- H02J2007/0067—
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a battery management system with a field-effect tube breakdown detection function. The system solves the problems that in the prior art, a battery is damaged due to the fact that a power switch tube of a battery management system is prone to being broken down, and the battery management system takes no processing measures after protection failure. The system comprises a battery pack, a switch module, a sampling resistor, a power management module, a center processing module, a single voltage collection port module, a single voltage collection IC module and a warning module. The battery management system has the advantages that the field-effect tube breakdown detection function is achieved, abnormal situations of the control switch module can be detected in time, the system has the warning module and can send out a warning in time so that a user can be reminded of maintaining the switch module in time, the situation that the battery pack continues to be used after being out of control and accordingly maintenance is needed is avoided, and besides, further protection processing can be carried out on the failed control switch module and accordingly the battery is protected.
Description
Technical field
The present invention relates to a kind of power management techniques, especially relate to and a kind of there is the battery management system that field effect transistor punctures detection.
Background technology
At present, electric motor car is generally applied in the life of people, along with the development in epoch, the utilization of lithium battery on electric bicycle is also more and more extensive, there is the situations such as excessive discharge and recharge or short circuit to prevent battery, electrokinetic cell is all provided with charge-discharge protection circuit usually, make power battery charging or be discharged to certain voltage threshold to stop charge or discharge later, thus ensure the safety of electrokinetic cell, but the protective circuit adopted at present, i.e. management system, the power switch pipe adopted in circuit is NMOS substantially, and NMOS tube is often easily breakdown when high voltage or big current, impedance can higher than under normal condition, continuing will constantly generate heat in the process used, and thermal resistance value is larger all the more, resistance is larger just hot all the more, the final battery pack that causes possibly is smoldered, the security incident such as to catch fire.Although although these batteries have related to battery realization protection in addition, further do not detected and process doing after shielding failure.
Summary of the invention
It is easily breakdown and cause cell damage that the present invention mainly solves battery management system power switch pipe in prior art; and the problem do not had handling it after shielding failure, provide a kind of have puncture detection, shielding failure after report to the police there is the battery management system that field effect transistor punctures detection.
What above-mentioned technical problem of the present invention was mainly solved by following technical proposals a kind ofly has the battery management system that field effect transistor punctures detection, comprise by the battery pack of multiple serial battery, switch module, sampling resistor, battery anode is by connection control switch module, battery electrode is connected to after sampling resistor, system also includes power management module, central processing module, monomer voltage acquisition interface module, monomer voltage gathers IC module, alarm module, voltage comparison module, described central processing module is connected on the control end of control switch, central processing module also has on the circuit that sampling circuit is connected between control switch and sampling resistor, described alarm module is connected with central processing module, described power management module is connected respectively to alarm module, in central processing module and monomer voltage acquisition interface module, described monomer voltage acquisition interface module is connected with battery pack, and monomer voltage acquisition interface module and monomer voltage gather IC model calling, monomer voltage gathers IC module and is connected with CPU, described voltage comparator module is attempted by sampling resistor, voltage comparator module output is connected on central processing module.In the present invention, cell voltage collection IC module is gathered batteries monomer battery voltage data by monomer voltage acquisition interface module; sampling circuit gathers loop current; whether central processing module overcharges according to these Data Detection cells, mistake is put; battery pack whether overcurrent; central processing module controls the opening and closing of control switch module according to situation about detecting simultaneously, carries out charge protection and discharge prevention to team's battery pack.Voltage comparator is used for comparing sampling resistor both end voltage, according to comparable situation, central processing module judges that whether control switch module is breakdown, and control alarm module and report to the police after judgement punctures, reminding user needs on-call maintenance, prevent battery pack from continuing to use when out of control, cause the generation of keeping in repair.Power management module is for meeting the demand of different operating voltage in system.The protections such as the present invention can not only overcharge battery pack, mistake is put, short circuit, overcurrent, are also had the detection that control switch module punctures inefficacy, and can be reported to the police by alarm module in the event of a failure, user's Timeliness coverage is keeped in repair in time.
As a kind of preferred version, described control switch module comprises the metal-oxide-semiconductor Q1 of control of discharge, the metal-oxide-semiconductor Q2 that charging controls, diode D1, diode D2, the grid of metal-oxide-semiconductor Q1 and the grid of metal-oxide-semiconductor Q2 are connected on central processing module respectively, the drain electrode of metal-oxide-semiconductor Q1 is connected to the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q1 is connected with sampling resistor, the source electrode of metal-oxide-semiconductor Q2 is connected with battery anode, diode D1 positive pole connects metal-oxide-semiconductor Q1 source electrode, diode D1 negative pole connects metal-oxide-semiconductor Q1 drain electrode, diode D2 positive pole connects metal-oxide-semiconductor Q2 source electrode, diode D2 negative pole connects metal-oxide-semiconductor Q2 drain electrode.Control switch module carries out charge protection and discharge prevention to battery pack; when central processing module detects that battery pack has monomer voltage to overcharge; the metal-oxide-semiconductor Q2 controlling charging control closes; disconnect charging circuit; charge protection is carried out to battery pack; if now central processing module is still detected by charging current by voltage comparison module, then think that metal-oxide-semiconductor Q2 is breakdown, report to the police.Detect that battery pack has monomer voltage to cross to put at central processing module, battery pack overcurrent, battery pack always just with total negative short circuit time; the metal-oxide-semiconductor Q1 that controlled discharge controls closes; disconnect discharge circuit; discharge prevention is carried out to battery pack; if now central processing module has still detected discharging current by adopting circuit; then think that metal-oxide-semiconductor Q1 is breakdown, report to the police.
As a kind of preferred version, monomer voltage acquisition interface module includes some positive terminal and negative terminal, these positive terminal are connected respectively on the positive pole of batteries monomer battery, negative terminal is connected to the negative pole of battery pack, monomer voltage gathers IC module and has some detection interfaces, detects interface difference correspondence and is connected with positive terminal, negative terminal.Monomer voltage acquisition interface module detects each monomer battery voltage of battery pack respectively, gathers IC module to gather voltage data and be then sent to central processing module by monomer voltage.
As a kind of preferred version, described alarm module comprises loud speaker, triode Q3, light-emitting diode D3, resistance R1, resistance R2, described loud speaker positive pole connects positive source, loud speaker negative pole connecting triode Q3 collector electrode, triode Q3 grounded emitter, triode Q3 base stage is by being connected on central processing module after contact resistance R1, and resistance R2 one end is connected on loud speaker positive pole, resistance R2 other end connecting luminous diode D3 positive pole, light-emitting diode D3 negative pole connects loud speaker negative pole.Alarm module controls by central processing module, when central processing module detects that control switch module is breakdown, sends a signal to triode Q3 base stage, makes triode Q3 conducting, loud speaker and light-emitting diode D3 all switched on, carry out sound and light alarm.
As a kind of preferred version, system also includes temperature sensor, fuse and fuse control switch, described fuse is arranged on the circuit between control switch module and battery anode, fuse control switch is arranged on the circuit between fuse and battery anode, and the control end of fuse control switch is connected on central processing module, described temperature sensor is arranged on control switch Modular surface, and temperature sensor is connected with power management module with central processing module respectively.Central processing module controls the work of fuse control switch, and temperature sensor is close to two metal-oxide-semiconductors of control switch module on the surface, and the temperature signal detected is transferred to central processing module.When central processing module detects that metal-oxide-semiconductor temperature exceedes set point, think that metal-oxide-semiconductor exists abnormal, then central processing module controls fuse control switch and opens the loop fuse that fuses, and stops battery pack work, avoids dangerous generation.Control control switch module at central processing module in addition to disconnect, after quitting work, central processing module continues to detect that batteries monomer voltage raises or declines, then think control switch Module Fail, but do not generate heat, central processing module controls fuse control switch and opens, fuse in fusing loop, make battery pack physical break performance loop, avoid battery pack to work on, initiation potential.
Therefore; advantage of the present invention is: have field effect transistor and puncture measuring ability; can Timeliness coverage control switch module abnormal conditions; and there is alarm module can report to the police in time; reminding user needs on-call maintenance, prevents battery pack from continuing to use when out of control, causes the generation of keeping in repair; but also further conservation treatment can be carried out to control switch Module Fail, protect battery.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of circuit structure frame diagram of the present invention;
Accompanying drawing 2 is a kind of electrical block diagrams of alarm module in the present invention.
1-battery pack 2-monomer voltage acquisition interface module 3-monomer voltage gathers IC module 4-power management module 5-alarm module 6-central processing module 7-fuse control switch 8-control switch module 9-voltage comparison module 10-sampling resistor 11-fuse 12-loud speaker 13-temperature sensor.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
The present embodiment is a kind of has the battery management system that field effect transistor punctures detection, as shown in Figure 1, comprise battery pack 1, control switch module 8, sampling resistor 10, fuse 11, fuse control switch 7, voltage comparison module 9, monomer voltage acquisition interface module 2, monomer voltage gather IC module 3, power management module 4, alarm module 5, central processing module 6.Battery pack is in series by multiple cell, and positive pole connection control switch module one end of battery pack, the control switch module other end connect sampling resistor one end, sampling resistor other end connection battery electrode, form a loop like this.
Monomer power supply gathers interface module 2 and comprises some positive terminal and a negative terminal, and positive terminal is connected respectively on the positive pole of each cell in battery pack, and negative terminal is connected to the negative pole of battery pack.Monomer voltage acquisition interface module and monomer voltage gather IC module 3 and are connected, monomer voltage gathers IC module by signal output and is connected on central processing module 6, power management module has two ports and is connected respectively to monomer voltage and gathers in IC module in addition, gather IC module by monomer voltage to be connected with total negative pole with total positive pole of battery pack respectively, power management module is also connected with alarm module 5, central processing module 6 respectively, and alarm module is connected on central processing module.Voltage comparison module 9 has two inputs, is connected to sampling resistor two ends, voltage comparison module is connected in parallel on sampling resistor, and voltage comparator module output is connected on central processing module.Central processing module also has sampling circuit, and sampling circuit is connected on the circuit between control switch and sampling resistor.
In order to improve the protection to battery further; system is also provided with fuse 11, fuse control switch 7, temperature sensor 13; temperature sensor is connected with central processing module 6 with power management module 4 respectively, is arranged on the surface of control switch module when this temperature sensor is installed.Fuse is arranged on the circuit between control switch module and battery anode, and fuse control switch is arranged on the circuit between fuse and battery anode, and the control end of fuse control switch is connected on central processing module.
As shown in Figure 1, control switch module 8 comprises the metal-oxide-semiconductor Q1 of control of discharge, the metal-oxide-semiconductor Q2 that charging controls, diode D1, diode D2, the grid of metal-oxide-semiconductor Q1 and the grid of metal-oxide-semiconductor Q2 are connected on central processing module 6 respectively, the drain electrode of metal-oxide-semiconductor Q1 is connected to the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q1 is connected with sampling resistor 10, the source electrode of metal-oxide-semiconductor Q2 is connected with battery anode, diode D1 positive pole connects metal-oxide-semiconductor Q1 source electrode, diode D1 negative pole connects metal-oxide-semiconductor Q1 drain electrode, diode D2 positive pole connects metal-oxide-semiconductor Q2 source electrode, diode D2 negative pole connects metal-oxide-semiconductor Q2 drain electrode.
As shown in Figure 2, alarm module 5 comprises loud speaker 12, triode Q3, light-emitting diode D3, resistance R1, resistance R2, described loud speaker positive pole connects positive source, loud speaker negative pole connecting triode Q3 collector electrode, triode Q3 grounded emitter, triode Q3 base stage is by being connected on central processing module after contact resistance R1, and resistance R2 one end is connected on loud speaker positive pole, resistance R2 other end connecting luminous diode D3 positive pole, light-emitting diode D3 negative pole connects loud speaker negative pole.
The present embodiment CS central processing module gathers the electric current and voltage situation of IC module, monomer voltage acquisition interface module detection batteries monomer by monomer voltage; if when detecting that battery pack has monomer voltage to overcharge; then control metal-oxide-semiconductor Q2 to close, realize charge protection.If detect, battery pack has monomer voltage to cross to put, battery pack overcurrent, battery pack always just with total negative short circuit, then control metal-oxide-semiconductor Q1 and close, disconnect discharge circuit, discharge prevention is carried out to battery pack.Achieve like this battery pack over-charge protective, Cross prevention.
System has field effect transistor and punctures detection and protection.If central processing module has controlled metal-oxide-semiconductor Q2 and has closed in charging process, if now central processing module has still detected charging current by voltage comparison module, then think that metal-oxide-semiconductor Q2 is breakdown, central processing module sends information to alarm module, and alarm module is reported to the police.If central processing module has controlled metal-oxide-semiconductor Q1 and has closed in discharge process, if now central processing module has still detected discharging current by adopting circuit, then think that metal-oxide-semiconductor Q1 is breakdown, central processing module sends information to alarm module, and alarm module is reported to the police.
In order to protect battery pack further; system also has temperature detecting function; the temperature of temperature sensor detection control switch module two metal-oxide-semiconductor; when central processing module detects that metal-oxide-semiconductor temperature exceedes set point; think that metal-oxide-semiconductor exists abnormal; then central processing module controls fuse control switch and opens the loop fuse that fuses, and stops battery pack work, avoids dangerous generation.Control control switch module at central processing module in addition to disconnect, after quitting work, central processing module continues to detect that batteries monomer voltage raises or declines, then think control switch Module Fail, but do not generate heat, central processing module controls fuse control switch and opens, fuse in fusing loop, make battery pack physical break performance loop, avoid battery pack to work on, initiation potential.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ the terms such as battery pack, monomer voltage acquisition interface module, monomer voltage collection IC module, power management module herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (5)
1. one kind has the battery management system that field effect transistor punctures detection, it is characterized in that: comprise by the battery pack of multiple serial battery (1), control switch module (8), sampling resistor (10), battery anode is by connection control switch module (8), sampling resistor is connected to battery electrode after (10), system also includes power management module (4), central processing module (6), monomer voltage acquisition interface module (2), monomer voltage gathers IC module (3), alarm module (5), voltage comparison module (9), described central processing module is connected on the control end of control switch, central processing module also has on the circuit that sampling circuit is connected between control switch and sampling resistor, described alarm module is connected with central processing module, described power management module is connected respectively to alarm module, in central processing module and monomer voltage acquisition interface module, described monomer voltage acquisition interface module is connected with battery pack, and monomer voltage acquisition interface module and monomer voltage gather IC model calling, monomer voltage gathers IC module and is connected with CPU, described voltage comparator module is attempted by sampling resistor, voltage comparison module output is connected on central processing module.
2. according to claim 1 a kind ofly have the battery management system that field effect transistor punctures detection, it is characterized in that described control switch module (8) comprises the metal-oxide-semiconductor Q1 of control of discharge, the metal-oxide-semiconductor Q2 that charging controls, diode D1, diode D2, the grid of metal-oxide-semiconductor Q1 and the grid of metal-oxide-semiconductor Q2 are connected on central processing module (6) respectively, the drain electrode of metal-oxide-semiconductor Q1 is connected to the drain electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q1 is connected with sampling resistor (10), the source electrode of metal-oxide-semiconductor Q2 is connected with battery anode, diode D1 positive pole connects metal-oxide-semiconductor Q1 source electrode, diode D1 negative pole connects metal-oxide-semiconductor Q1 drain electrode, diode D2 positive pole connects metal-oxide-semiconductor Q2 source electrode, diode D2 negative pole connects metal-oxide-semiconductor Q2 drain electrode.
3. according to claim 1 a kind ofly have the battery management system that field effect transistor punctures detection, it is characterized in that monomer voltage acquisition interface module (2) includes some positive terminal and negative terminal, these positive terminal are connected respectively on the positive pole of battery pack (1) cell, negative terminal is connected to the negative pole of battery pack, monomer voltage gathers IC module and has some detection interfaces, detects interface difference correspondence and is connected with positive terminal, negative terminal.
4. a kind of according to claim 1 or 2 or 3 has the battery management system that field effect transistor punctures detection, it is characterized in that described alarm module (5) comprises loud speaker (12), triode Q3, light-emitting diode D3, resistance R1, resistance R2, described loud speaker positive pole connects positive source, loud speaker negative pole connecting triode Q3 collector electrode, triode Q3 grounded emitter, triode Q3 base stage is by being connected on central processing module after contact resistance R1, resistance R2 one end is connected on loud speaker positive pole, resistance R2 other end connecting luminous diode D3 positive pole, light-emitting diode D3 negative pole connects loud speaker negative pole.
5. a kind of according to claim 1 or 2 or 3 has the battery management system that field effect transistor punctures detection, it is characterized in that also including temperature sensor (13), fuse (11) and fuse control switch (7), described fuse is arranged on the circuit between control switch module (8) and battery anode, fuse control switch is arranged on the circuit between fuse and battery anode, and the control end of fuse control switch is connected on central processing module (6), described temperature sensor is arranged on control switch Modular surface, temperature sensor is connected with power management module (4) with central processing module (6) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505845.6A CN104377753A (en) | 2014-09-28 | 2014-09-28 | Battery management system with field-effect tube breakdown detection function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410505845.6A CN104377753A (en) | 2014-09-28 | 2014-09-28 | Battery management system with field-effect tube breakdown detection function |
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| CN104377753A true CN104377753A (en) | 2015-02-25 |
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| CN201410505845.6A Pending CN104377753A (en) | 2014-09-28 | 2014-09-28 | Battery management system with field-effect tube breakdown detection function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106169780A (en) * | 2015-12-28 | 2016-11-30 | 深圳市个联科技有限公司 | Battery status supervisory systems |
| CN106501703A (en) * | 2017-01-04 | 2017-03-15 | 山东谦恒电子科技有限公司 | BMS equilibrium metal-oxide-semiconductor detection methods and device |
| WO2017113524A1 (en) * | 2015-12-28 | 2017-07-06 | 深圳市个联科技有限公司 | Battery state supervision system |
| CN110957540A (en) * | 2018-09-26 | 2020-04-03 | 惠州市蓝微电子有限公司 | Management system and method for identifying and processing MOS short circuit |
| CN113341324A (en) * | 2021-06-24 | 2021-09-03 | 惠州亿纬创能电池有限公司 | Battery electric quantity detection circuit and electric vehicle |
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| US20040095081A1 (en) * | 2002-11-14 | 2004-05-20 | Fyre Storm, Inc. | Power converter circuitry and method |
| CN201134461Y (en) * | 2007-12-14 | 2008-10-15 | 天津力神电池股份有限公司 | Disaster preventing protective device of protective plate of multi-series lithium ion cell |
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Cited By (5)
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| CN110957540A (en) * | 2018-09-26 | 2020-04-03 | 惠州市蓝微电子有限公司 | Management system and method for identifying and processing MOS short circuit |
| CN113341324A (en) * | 2021-06-24 | 2021-09-03 | 惠州亿纬创能电池有限公司 | Battery electric quantity detection circuit and electric vehicle |
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Application publication date: 20150225 |