CN106532146A - Electric vehicle power battery box liquid leakage detection system and detection method thereof - Google Patents
Electric vehicle power battery box liquid leakage detection system and detection method thereof Download PDFInfo
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- CN106532146A CN106532146A CN201610880537.0A CN201610880537A CN106532146A CN 106532146 A CN106532146 A CN 106532146A CN 201610880537 A CN201610880537 A CN 201610880537A CN 106532146 A CN106532146 A CN 106532146A
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- power battery
- battery box
- signal processing
- processing unit
- electric vehicle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4228—Leak testing of cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to an electric vehicle power battery box liquid leakage detection system and a detection method thereof. The liquid leakage detection system comprises a plurality of liquid leakage detection devices, a signal processing unit, and an alarm unit, which are arranged in a power battery box. The output terminals of the liquid leakage detection devices are connected to the input terminal of the signal processing unit, and the output terminal of the signal processing unit is connected to the control terminal of the alarm unit. According to the detection method, the liquid leakage detection devices can detect whether liquid leakage happens in the battery box in real time, once the liquid leakage is detected, the signal processing unit can trigger the alarm unit to give off an alarm, moreover, the liquid leakage alarm can also be graded, thus a driver or related personnel can clearly know the leakage degree and carry out a corresponding treatment more pertinently. The using is more flexible, the intelligent degree is high, and the traveling safety is improved.
Description
Technical field
A kind of the present invention relates to electric automobile manufacture field, more particularly to power battery box of electric vehicle leakage detection system
And its detection method.
Background technology
With the development of new forms of energy, lithium ion battery is applied on electric automobile in a large number, in order that charging, changing electricity more rapidly
And it is convenient, the electrokinetic cell on electric automobile is general all in the form of battery case, will multiple lithium ion batteries be installed to
Modular power battery is constituted in casing.At present, power battery pack is mainly assembled using Soft Roll polymer Li-ion battery, its group
Three sides into the aluminum plastic membrane shell of cell all pass through hot-press sealed, the risk that there is the easy leakage in plastic packaging side.And it is electronic
Inevitably there are vibrations in automobile, phase mutual friction and extruding between cell and module housing is easily led in the process of moving
Cause damage of aluminum plastic membrane shell and electrolyte leakage occur, the loss of electrolyte can make battery failure capacity attenuation, whole so as to affect
The performance of individual power battery pack, at the same leakage electrolyte also can corrosion cell casing and circuit system, there is great safety
Hidden danger.
The content of the invention
Present invention mainly solves the vibrations that electric automobile occurs in the process of moving easily cause cell and module housing
Between phase mutual friction and extruding, be easily caused cell damage of aluminum plastic membrane shell and occur electrolyte leakage, the stream of electrolyte
Mistake can make battery failure capacity attenuation, so as to affect the performance of whole power battery pack, while the electrolyte of leakage can also corrode
Battery case and circuit system, the technical problem that there is great potential safety hazard；A kind of power battery box of electric vehicle leakage is provided
Liquid detecting system and its detection method, whether which can have leakage to send out by real-time detection battery during the use of power battery pack
It is raw, once finding leakage sends alarm signal, to remind related personnel to make respective handling in time, improve travel safety.
What the above-mentioned technical problem of the present invention was mainly addressed by following technical proposals：The electric automobile of the present invention
Power battery box leakage detection system, including several apparatus for testing weeping and signal processing unit for being located in power battery box
And alarm unit, the outfan of apparatus for testing weeping is connected with the input of signal processing unit, the output of signal processing unit
End is connected with the control end of alarm unit.Signal processing unit is may be mounted in battery case, also may be installed outside battery case, report
Alert unit is may be mounted on the outside of battery case, also may be installed on the instrumental panel of electric car cab.Apparatus for testing weeping reality
When detection power battery box in electrokinetic cell whether have electrolyte to leak out, once detected electrolyte leak, leakage inspection
The outfan for surveying device exports input of the detection signal to signal processing unit, and signal processing unit sends control through processing
Control end of the signal processed to alarm unit, starts and reports to the police, and reminds related personnel to make respective handling in time, it is ensured that to have robbing for abundance
Repair and process time, improve electrokinetic cell and electric automobile travel safety.Signal processing unit can adopt microcontroller, list
Piece machine or digital signal processing circuit are realized.
Preferably, described apparatus for testing weeping includes body and gas collecting pump and gas sensing in body
Device, the front end of body are provided with air inlet, and the rear end of body is provided with gas outlet, and air inlet is provided with drainage screen, and described gas is adopted
Collection pump is located at the rear of described air inlet, and described gas sensor is located between gas collecting pump and gas outlet, and gas is passed
The outfan of sensor is connected with the input of described signal processing unit.Gas in power battery box is inhaled by gas collecting pump
Enter body, the solid particles such as dust, impurity are fallen by filter screen filtration, the gas for sucking body is through gas sensor and gentle
The probe of body sensor is fully contacted, then discharges from gas outlet, when there is leakage in the electrokinetic cell in power battery box, leakage
Escaping gas in the electrolyte for going out is (such as C2H4、CH4、C2H6、HF、H2And the imflammable gas such as CO) will be by gas sensor
Detect, after being converted into the signal of telecommunication, convey signal processing unit, improve the susceptiveness and reliability of detection.
Preferably, described gas sensor is electrochemical gas sensor, semiconductor gas sensor, ultraviolet gas
Any one of body sensor and infrared gas sensor or two or more sensors.The sensitive of detection is improved further
Degree.
Preferably, described alarm unit adopts acousto-optic warning unit, alarm unit to include buzzer and light-emitting diodes
Pipe.Reported to the police using sound-light double, reported to the police more eye-catching, the reliability of warning is higher.Certainly as needed, also alarm unit can be done
Into the audible alarm or the only light warning of light emitting diode of only buzzer.
Preferably, described apparatus for testing weeping has 4～8, multiple apparatus for testing weeping are separately mounted to described
On the side wall of power battery box, at least one apparatus for testing weeping on each side wall of power battery box.Realize gas in casing
Body-internal-circulation, detection range are wide, do not stay dead angle, improve detection reliability and degree of accuracy.
The detection method of power battery box of electric vehicle leakage detection system of the present invention is：Described apparatus for testing weeping
In real-time detection power battery box, whether electrokinetic cell has electrolyte to leak out, once detected electrolyte leak, leakage
The outfan of detection means exports input of the detection signal to described signal processing unit, and signal processing unit is at
Reason, sends control end of the control signal to described alarm unit, and control alarm unit sends alarm signal, reminds related personnel
Respective handling is made in time.Whether the present invention can have leakage by real-time detection battery during the use of power battery pack,
Once finding leakage sends alarm signal, to remind related personnel to make respective handling in time, travel safety is improved.
Preferably, described apparatus for testing weeping has multiple, multiple apparatus for testing weeping are distributed in described moving respectively
Different orientation in power battery case；Described signal processing unit receives the detection signal that all apparatus for testing weeping are sent, root
According to the number of the apparatus for testing weeping for detecting leakage, will leak out grade and be divided into rudimentary, intermediate and senior three ranks, and
The leakage class that control alarm unit makes alarm unit correspondence different sends different alarm signals.When such as rudimentary, buzzer is sent out
Go out long, light emitting diode is lighted；When intermediate, buzzer sends middle long；When senior, buzzer sends rapid minor, sends out
Optical diode hurriedly flashes.Or when rudimentary, light emitting diode is lighted, buzzer does not send chimes of doom；When intermediate, light-emitting diodes
Pipe does not work, buzzer call；When senior, light emitting diode is lighted, and buzzer sends chimes of doom；Etc..Graduation is reported to the police, and makes to drive
The person of sailing and related personnel can clearly differentiate leakiness, can targetedly make respective handling.
Preferably, when it is senior that described signal processing unit judges leakage class, signal processing unit output
ECU system of the emergent control signal to electric automobile, through processing, send signal makes electric automobile forced brake to ECU systems.Such as
The voltage output of cut-out electrokinetic cell, or make engine stop work, etc., force automobile to stop traveling, to avoid leakage from making
The accident of Cheng Geng great, further improves the safety of driving.
The invention has the beneficial effects as follows：During the use of power battery pack whether there can be leakage to send out by real-time detection battery
It is raw, once finding leakage sends alarm signal, and graduation warning is carried out to leakage, enable driver and related personnel clear
Leakiness is differentiated in ground by Chu, can targetedly make respective handling, using more flexible, intelligence degree height, improves driving
Safety.
Description of the drawings
Fig. 1 is a kind of circuit theory attachment structure block diagram of the present invention.
Fig. 2 is a kind of structural representation of apparatus for testing weeping distributed architecture in power battery box in the present invention.
Fig. 3 is a kind of structural representation of apparatus for testing weeping in the present invention.
Fig. 4 is a kind of circuit theory diagrams of alarm unit in the present invention.
1. power battery box in figure, 2. signal processing unit, 3. alarm unit, 4. apparatus for testing weeping, 5. body, 6. gas
Body gathers pump, 7. gas sensor, 8. air inlet, 9. gas outlet, 10. drainage screen, 11.ECU systems.
Specific embodiment
Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.
Embodiment：The power battery box of electric vehicle leakage detection system of the present embodiment, as shown in figure 1, including being arranged on
Six apparatus for testing weeping 4 and a signal processing unit 2 in power battery box of electric vehicle 1 and drive installed in electric automobile
The alarm unit 3 on the instrumental panel of room is sailed, wherein four apparatus for testing weeping are separately mounted to four corners of power battery box 1
Place, and in vertically-mounted state, other two apparatus for testing weeping is separately mounted to two longer sides of power battery box
On wall, and in state is horizontally mounted, as shown in Figure 2.The outfan of six apparatus for testing weeping 4 is respectively and signal processing unit
2 six inputs are connected, and the outfan of signal processing unit 2 is connected with the control end of alarm unit 3.As shown in figure 3, leakage
Detection means 4 includes one section of circular body 5 and gas collecting pump 6 and gas sensor 7 in body 5, before body 5
There is gas outlet 9 rear end that there is air inlet 8, body 5 at end, is packaged with drainage screen 10 on air inlet 8, gas collecting pump 6 be arranged on into
The rear of QI KOU 8, gas sensor 7 are arranged between gas collecting pump 6 and gas outlet 9, and the outfan of gas sensor 7 is
The outfan of apparatus for testing weeping 4, which passes through wire and is connected with the input of signal processing unit 2.Gas in body
Body sensor 7 can be electrochemical gas sensor, semiconductor gas sensor, ultraviolet gas sensor or infrared gas
Sensor, it is also possible to installed from two kinds in these sensors, three kinds or four kinds, with improve detection susceptiveness and can
By property.In the present embodiment, alarm unit 3 adopts acousto-optic warning unit, alarm unit 3 to include buzzer and light emitting diode.Such as
Shown in Fig. 4, signal processing unit 2 adopts STM32F107 microcontrollers, alarm unit 3 to include audion Q1, audion Q2, electricity
Resistance R11～resistance R14 and light emitting diode D, buzzer LS, resistance R11, resistance R13 one end and signal processing unit 2
Output terminals A larm is connected, and the other end of resistance R11 is connected with the base stage of audion Q1, the other end and audion Q2 of resistance R13
Base stage be connected, the grounded emitter of audion Q1, the colelctor electrode of audion Q1 are connected with the negative pole of buzzer LS, buzzer LS
Positive pole Jing resistance R12 meet voltage VCC, the grounded emitter of audion Q2, the colelctor electrode of audion Q2 and light emitting diode D
Negative pole is connected, and the positive pole Jing resistance R14 of light emitting diode D meet voltage VCC.When signal processing unit is received from gas sensor
Signal when judging that battery has leakage, then output terminals A larm of signal processing unit is high level, audion Q1 and audion
Q2 turn on, buzzer LS obtain it is electric send chimes of doom, light emitting diode D is lighted.Start sound and light alarm, alarm form is more eye-catching,
Improve the reliability reported to the police.
The detection method of above-mentioned power battery box of electric vehicle leakage detection system is：Gas collecting pump is by power battery box
In gas inspiration body, the solid particles such as dust, impurity are fallen by filter screen filtration, the gas for sucking body is passed through gas
Sensor is simultaneously fully contacted with the probe of gas sensor, then discharge from gas outlet, when the electrokinetic cell generation in power battery box
During leakage, the escaping gas in the electrolyte for leaking out will be detected by gas sensor 7, once detect electrolyte
Leakage, the outfan of gas sensor 7 export input of the detection signal to signal processing unit 2, and signal processing unit 2 is passed through
Process, send control end of the control signal to alarm unit 3, control alarm unit 3 sends alarm signal, remind related personnel and
When make respective handling；And signal processing unit 2 is will leak out according to the number of the apparatus for testing weeping 4 for detecting leakage
Grade is divided into rudimentary, intermediate and senior three ranks, and controlling alarm unit 3 makes alarm unit 3 correspond to different leakages etc.
Level sends different alarm signals.When such as rudimentary, buzzer sends long, and light emitting diode is lighted；When senior, buzzer sends
Rapid minor, light emitting diode hurriedly flash.Or when rudimentary, light emitting diode is lighted, buzzer does not send chimes of doom；In
During level, light emitting diode does not work, buzzer call；When senior, light emitting diode is lighted, and buzzer sends chimes of doom；Etc..With
Driver or related personnel is reminded, the degree of leakage is known, to make respective handling.When signal processing unit 2 judges leakage
When grade is senior, while signal processing unit 2 sends control signal startup warning, emergent control signal is exported to electronic vapour
The ECU systems 11 of car, through processing, send signal makes electric automobile forced brake to ECU systems 11, such as cuts off the electricity of electrokinetic cell
Pressure output, or make engine stop work, etc., to avoid leaking the bigger accident that causes, improve the safety of driving.
Claims (8)
1. a kind of power battery box of electric vehicle leakage detection system, it is characterised in that including being located in power battery box (1)
Several apparatus for testing weeping (4) and signal processing unit (2) and alarm unit (3), the outfan of apparatus for testing weeping (4) and
The input of signal processing unit (2) is connected, and the outfan of signal processing unit (2) is connected with the control end of alarm unit (3).
2. power battery box of electric vehicle leakage detection system according to claim 1, it is characterised in that described leakage
Detection means (4) includes body (5) and gas collecting pump (6) and gas sensor (7) in body (5), body (5)
Front end is provided with air inlet (8), and the rear end of body (5) is provided with gas outlet (9), and air inlet (8) is provided with drainage screen (10), described
Gas collecting pump (6) is located at the rear of described air inlet (8), described gas sensor (7) be located at gas collecting pump (6) and
Between gas outlet (9), the outfan of gas sensor (7) is connected with the input of described signal processing unit (2).
3. power battery box of electric vehicle leakage detection system according to claim 2, it is characterised in that described gas
Sensor (7) is electrochemical gas sensor, semiconductor gas sensor, ultraviolet gas sensor and infrared gas sensing
Any one of device or two or more sensors.
4. power battery box of electric vehicle leakage detection system according to claim 1, it is characterised in that described warning
Unit (3) adopts acousto-optic warning unit, alarm unit (3) to include buzzer and light emitting diode.
5. the power battery box of electric vehicle leakage detection system according to claim 1 or 2 or 4, it is characterised in that described
Apparatus for testing weeping (4) have 4～8, multiple apparatus for testing weeping (4) are separately mounted to described power battery box (1)
On the wall of side, at least one apparatus for testing weeping (4) on each side wall of power battery box (1).
6. a kind of detection method of power battery box of electric vehicle leakage detection system as claimed in claim 1, its feature exist
In the power battery box (1) described in described apparatus for testing weeping (4) real-time detection, whether electrokinetic cell has electrolyte to leak
Out, leak once having detected electrolyte, the outfan of apparatus for testing weeping (4) exports detection signal at described signal
The input of reason unit (2), signal processing unit (2) send control of the control signal to described alarm unit (3) through processing
End processed, control alarm unit (3) send alarm signal, remind related personnel to make respective handling in time.
7. the detection method of power battery box of electric vehicle leakage detection system according to claim 6, it is characterised in that
Described apparatus for testing weeping (4) has multiple, and multiple apparatus for testing weeping (4) are distributed in described power battery box (1) respectively
In different orientation；Described signal processing unit (2) receives the detection signal that all apparatus for testing weeping (4) are sent, according to
The number of the apparatus for testing weeping (4) of leakage is detected, grade is will leak out and is divided into rudimentary, intermediate and senior three ranks, and
And controlling alarm unit (3) makes the corresponding different leakage class of alarm unit (3) send different alarm signals.
8. the detection method of power battery box of electric vehicle leakage detection system according to claim 7, it is characterised in that
When it is senior that described signal processing unit (2) judges leakage class, signal processing unit (2) output emergent control signal
To the ECU systems (11) of electric automobile, through processing, send signal makes electric automobile forced brake to ECU systems (11).
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| CN201610880537.0A CN106532146A (en) | 2016-10-09 | 2016-10-09 | Electric vehicle power battery box liquid leakage detection system and detection method thereof |
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| CN201610880537.0A CN106532146A (en) | 2016-10-09 | 2016-10-09 | Electric vehicle power battery box liquid leakage detection system and detection method thereof |
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Cited By (9)
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| CN107959066A (en) * | 2017-11-20 | 2018-04-24 | 北京长城华冠汽车技术开发有限公司 | A kind of power battery box of electric vehicle leakage control system and control method |
| CN109065982A (en) * | 2018-08-01 | 2018-12-21 | 华霆（合肥）动力技术有限公司 | The quick-fried spray detection device of battery and electronic equipment |
| CN109904361A (en) * | 2019-02-15 | 2019-06-18 | 北京长城华冠汽车科技股份有限公司 | The battery case leakage processing method and system of electric car |
| CN109950645A (en) * | 2019-02-26 | 2019-06-28 | 重庆金康动力新能源有限公司 | Apparatus for testing weeping, electrokinetic cell system and electric car |
| CN110160712A (en) * | 2019-06-03 | 2019-08-23 | 浙江泰德汽车零部件有限公司 | Coolant liquid leak detection apparatus and its detection method and electric car in battery pack |
| CN110957542A (en) * | 2019-04-30 | 2020-04-03 | 宁德时代新能源科技股份有限公司 | Battery thermal runaway detection method, device and system and battery management unit |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959066A (en) * | 2017-11-20 | 2018-04-24 | 北京长城华冠汽车技术开发有限公司 | A kind of power battery box of electric vehicle leakage control system and control method |
| CN109065982A (en) * | 2018-08-01 | 2018-12-21 | 华霆（合肥）动力技术有限公司 | The quick-fried spray detection device of battery and electronic equipment |
| CN109904361A (en) * | 2019-02-15 | 2019-06-18 | 北京长城华冠汽车科技股份有限公司 | The battery case leakage processing method and system of electric car |
| CN109950645A (en) * | 2019-02-26 | 2019-06-28 | 重庆金康动力新能源有限公司 | Apparatus for testing weeping, electrokinetic cell system and electric car |
| CN110957542A (en) * | 2019-04-30 | 2020-04-03 | 宁德时代新能源科技股份有限公司 | Battery thermal runaway detection method, device and system and battery management unit |
| CN110160712A (en) * | 2019-06-03 | 2019-08-23 | 浙江泰德汽车零部件有限公司 | Coolant liquid leak detection apparatus and its detection method and electric car in battery pack |
| CN110160712B (en) * | 2019-06-03 | 2024-04-05 | 浙江泰德汽车零部件有限公司 | Device and method for detecting leakage of cooling liquid in battery pack and electric automobile |
| CN111366307A (en) * | 2020-03-05 | 2020-07-03 | 欣旺达电动汽车电池有限公司 | Liquid leakage detection device, method, storage medium and computer equipment |
| CN111366307B (en) * | 2020-03-05 | 2022-03-11 | 欣旺达电动汽车电池有限公司 | Liquid leakage detection device, method, storage medium and computer equipment |
| WO2022134429A1 (en) * | 2020-12-23 | 2022-06-30 | 比亚迪股份有限公司 | Battery pack, control method for battery pack, and vehicle |
| CN113479074A (en) * | 2021-06-22 | 2021-10-08 | 东风柳州汽车有限公司 | Battery package structure, detecting system and vehicle |
| CN113479074B (en) * | 2021-06-22 | 2022-12-13 | 东风柳州汽车有限公司 | Battery package structure, detecting system and vehicle |
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Application publication date: 20170322 |