CN107878204A - Hermetization testing method, system and the vehicle of battery bag - Google Patents
Hermetization testing method, system and the vehicle of battery bag Download PDFInfo
- Publication number
- CN107878204A CN107878204A CN201610871932.2A CN201610871932A CN107878204A CN 107878204 A CN107878204 A CN 107878204A CN 201610871932 A CN201610871932 A CN 201610871932A CN 107878204 A CN107878204 A CN 107878204A
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- China
- Prior art keywords
- seal cavity
- battery bag
- immersion
- pressure
- signal
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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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
- H01M10/4228—Leak testing of cells or batteries
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- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention provides a kind of hermetization testing method of battery bag, system and vehicle, this method includes：Detect whether to receive the sealing detection signal of battery bag；If it is, inflated into seal cavity, until the air pressure in seal cavity stops inflating when rising to the first predetermined pressure by normal pressure；Pressure release is carried out until the air pressure in seal cavity is down to normal pressure, and records venting duration to the seal cavity by breather valve；Judge whether venting duration was less than for first scheduled time；If it is, judging seal cavity gas leakage, and carry out leakage alarm.The method of the present invention can in real time, effectively detect whether the sealing state of battery bag is good, carry out early warning poorly sealed to battery bag, so as to lift the safety and reliability of battery bag.
Description
Technical field
The present invention relates to automobile technical field, the more particularly to a kind of hermetization testing method of battery bag, system and vehicle.
Background technology
The operating condition of vehicle is complicated, for electric automobile, if vehicle be in paddle, the operation such as battery bag charging
Under operating mode, if battery bag poor sealing soak, may cause it is short-circuit, on fire, blast the problems such as, endanger occupant safety, cause
Property loss.
Due to having breather valve in battery bag, breather valve has the function of balancing battery bag inner and outer air pressure, anti-gray function, resistance
Only the aqueous water under certain pressure enters battery packet function, reduces the function of battery drain harmful gas concentration in bag, therefore, according to
Pressured force snesor can not effectively judge the sealing state of battery bag.
In addition, the classification of waterproof of Vehicular dynamic battery bag is IP67, it is desirable to 1m waterproofs 3 hours under water, if battery bag
It is immersed in for a long time in water, even if water depth deficiency 1m is also possible to seepage occur, it is impossible to ensure battery bag safety.Battery bag is being transported
During row, because vibration, aging, corrosion, wiping such as touch at the reason, the sealing of battery bag may not reach IP67, therefore by dispatching from the factory
Preceding mechanical seal detection is it cannot be guaranteed that the sealing security of battery bag.
The content of the invention
In view of this, the present invention is directed to propose a kind of hermetization testing method of battery bag, this method can in real time, effectively
Detect whether the sealing state of battery bag is good, carry out early warning poorly sealed to battery bag, so as to lift battery bag
Safety and reliability.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of hermetization testing method of battery bag, the battery bag include seal cavity and in the seal cavities
Electrokinetic cell, the seal cavity are provided with breather valve, the described method comprises the following steps：Detect whether to receive battery bag
Sealing detection signal；If it is, inflated into the seal cavity, until the air pressure in the seal cavity is risen to by normal pressure
Stop inflation during the first predetermined pressure；Pressure release is carried out until in the seal cavity to the seal cavity by the breather valve
Air pressure be down to the normal pressure, and record venting duration；Judge whether the venting duration was less than for first scheduled time；If
It is then to judge the seal cavity gas leakage, and carries out leakage alarm.
Further, the sealing detection signal comprises at least the first immersion signal, charging signals and manual detection signal
In one.
Further, in addition to：Detect whether to receive the second immersion signal；If it is, carry out battery bag immersion report
It is alert, and inflated into the seal cavity, until the air pressure in the seal cavity rises to first predetermined pressure by normal pressure,
And the air pressure in the seal cavity is maintained into first predetermined pressure, wherein, corresponding to the second immersion signal
Immersed depth, which is more than, corresponds to immersed depth corresponding to the described first immersion signal.
Further, in addition to：Detect whether to receive the 3rd immersion signal；If it is, vehicle immersion alarm is carried out,
And the aerification function into the seal cavity is disabled, wherein, immersed depth corresponding to the 3rd immersion signal is more than corresponding
In immersed depth corresponding to the described second immersion signal.
Further, in addition to：Detect whether the humidity in the seal cavity is more than the first predetermined moisture；If it is,
Then inflated into the seal cavity, and by the breathing valve exhaust, will pass through air-flow to being carried out in the seal cavity
Dehumidifying.
Further, wherein, when being inflated into the seal cavity, in addition to：Judgement is filled with the seal cavity
The humidity of gas whether be more than the second predetermined moisture；If it is, the gas being filled with the seal cavity is dried.
Further, inflated into the seal cavity, until the air pressure in the seal cavity rises to the by normal pressure
During stopping inflation during one predetermined pressure, in addition to：Record inflationtime；Judge whether the inflationtime is more than second
The scheduled time；If it is, judging the seal cavity gas leakage, and carry out leakage alarm.
Further, in addition to：Judge whether the venting duration was more than for the 3rd scheduled time；If it is, judge institute
Breather valve failure is stated, and carries out breather valve fault alarm, wherein, the 3rd scheduled time is more than first scheduled time.
Relative to prior art, the hermetization testing method of battery bag of the present invention has the advantage that：
The hermetization testing method of battery bag of the present invention, it can in real time, effectively detect the sealing shape of battery bag
Whether state is good, carry out early warning poorly sealed to battery bag, so as to lift the safety and reliability of battery bag.
It is another object of the present invention to propose a kind of sealing detection system of battery bag, the system is in real time, effectively
Detect whether the sealing state of battery bag is good, carry out early warning poorly sealed to battery bag, so as to lift battery bag
Safety and reliability.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of sealing detection system of battery bag, the battery bag include seal cavity and in the seal cavities
Electrokinetic cell, the seal cavity are provided with breather valve, and the system includes：Detection means, for detecting the sealing of battery bag
Pressure signal in detection signal and seal cavity；Aerating device, the aerating device are used to inflate into the seal cavity；
Controller, the controller are connected with the detection means and the aerating device respectively, to be detected in the detection means
During the sealing detection signal of the battery bag, the aerating device is controlled to be inflated to the first predetermined pressure into the seal cavity
When control the aerating device to stop inflation, and in the breather valve to the seal cavity pressure release to normal pressure when, record pressure release
Time, and the seal cavity gas leakage is determined when judging that the venting duration was less than for first scheduled time, and leaked
Gas is alarmed.
Further, the sealing detection signal comprises at least the first immersed depth for being used to detect the first immersion signal and passed
One in sensor, the charging signals collector for detecting charging signals and the switch for opening manual detection signal.
Further, in addition to：For detect second immersion signal the second immersed depth sensor, the controller with
The second immersed depth sensor is connected, to detect the second immersion signal in the second immersed depth sensor
When, battery bag immersion alarm is carried out, and controls the aerating device to be inflated into the seal cavity, and by the seal cavity
Interior air pressure maintains first predetermined pressure, wherein, immersed depth corresponding to the second immersion signal, which is more than, to be corresponded to
Immersed depth corresponding to the first immersion signal.
Further, in addition to：For detect the 3rd immersion signal the 3rd immersed depth sensor, the controller with
The 3rd immersed depth sensor is connected, to detect the 3rd immersion signal in the 3rd immersed depth sensor
When, vehicle immersion alarm is carried out, and the aerating device is disabled, wherein, immersed depth corresponding to the 3rd immersion signal is big
In corresponding to immersed depth corresponding to the described second immersion signal.
Further, in addition to：For detecting the first humidity sensor of the humidity in seal cavity, the controller with
First humidity sensor is connected, to detect that the humidity in the seal cavity is more than the in first humidity sensor
During one predetermined moisture, the aerating device is controlled to be inflated into the seal cavity, to breathe valve exhaust institute shape using with described
Into air-flow to being dehumidified in the seal cavity.
Further, in addition to：Drying device, the drying device are arranged on the aerating device and the seal cavity
Between；For detecting the second humidity sensor of the humidity for being filled with gas in the seal cavity, the controller with it is described
Second humidity sensor is connected, with when controlling the aerating device to be inflated into the seal cavity, if it is judged that being filled with
The humidity of gas in the seal cavity is more than the second predetermined moisture, then controls the drying device to being filled with the annular seal space
Internal gas is dried.
Further, the controller is additionally operable to according to the inflationtime for recording the aerating device, and described in judgement
When inflationtime was more than for second scheduled time, the seal cavity gas leakage is judged, and carry out leakage alarm.
Further, the controller is additionally operable to judge whether the venting duration was more than for the 3rd scheduled time, if it is,
Then judge the breather valve failure, and carry out breather valve fault alarm, wherein, it is pre- that the 3rd scheduled time is more than described first
Fix time.
The sealing detection system of described battery bag and the hermetization testing method of above-mentioned battery bag are relative to prior art
Possessed Dominant Facies are same, will not be repeated here.
Another object of the present invention is to propose a kind of vehicle, the vehicle can in real time, effectively detect battery bag
Sealing state it is whether good, carry out early warning poorly sealed to battery bag, so as to lift the security of battery bag and reliable
Property.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of vehicle, it is provided with the fast charging system of the electrokinetic cell described in any one embodiment as described above.
Described vehicle and the sealing detection system of above-mentioned battery bag are same relative to Dominant Facies possessed by prior art,
It will not be repeated here.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the hermetization testing method of the battery bag described in the embodiment of the present invention；
Fig. 2 is the schematic diagram of the hermetization testing method of the battery bag described in the embodiment of the present invention；
Fig. 3 closes for the position of battery bag and related device in the hermetization testing method of the battery bag described in the embodiment of the present invention
It is schematic diagram；
Fig. 4 is the schematic diagram of the hermetization testing method of the battery bag described in the embodiment of the present invention；
Fig. 5 is the structured flowchart of the sealing detection system of the battery bag described in the embodiment of the present invention.
Description of reference numerals：
The sealing detection system 500 of battery bag, detection means 510, aerating device 520, controller 530, battery bag charging
Humidity sensor S1, battery bag pressure sensor P1, battery bag immersed depth sensor in signal picker C1, battery bag
It is J1, battery bag immersed depth sensor J2, automobile immersed depth sensor J3, air pump ambient humidity sensor S2, normally closed unidirectional
Valve F1, normally closed check valve F2.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the flow chart of the hermetization testing method of battery bag according to an embodiment of the invention.
Before the hermetization testing method of battery bag according to embodiments of the present invention is described, battery bag is situated between first
Continue, battery bag generally includes electrokinetic cell and the seal cavity for sealing the electrokinetic cell, and electrokinetic cell is located at annular seal space
In vivo, breather valve is provided with seal cavity, breather valve has the function of balancing battery bag inner and outer air pressure, anti-gray function, prevented
Aqueous water under certain pressure enters the function of battery bag, reduces the harmful gas concentration that battery bag internally-powered battery is leaked
Function, electrokinetic cell includes multiple cells, and according to the needs of the output voltage of electrokinetic cell, multiple cells can be with
The mode of series connection and/or parallel connection connects.
As shown in figure 1, the hermetization testing method of battery bag according to an embodiment of the invention, comprises the following steps：
S101：Detect whether to receive the sealing detection signal of battery bag.In one embodiment of the invention, sealing inspection
Signal is surveyed to comprise at least but be not limited to one in the first immersion signal, charging signals and manual detection signal.
With reference to shown in Fig. 2, sealing detection signal can be detected to obtain by corresponding detection unit, such as：The leaching of detection first
The battery bag immersed depth sensor J1 of water signal, detects the battery bag charging signals collector C1 of charging signals, switch or
Button (is not shown) in Fig. 2, and switch or button generate manual detection signal when being triggered.
In one embodiment of the invention, immersed depth sensor J1 can be arranged in height as shown in Figure 3.
I.e.：Between ground and battery bag lower house.
S102：If it is, inflated into seal cavity, until the air pressure in seal cavity rises to first by normal pressure and made a reservation for
Stop inflation during pressure, wherein, the first predetermined pressure is more than normal pressure.Normal pressure is usually the atmospheric pressure of standard.
With reference to shown in Fig. 2 and shown in Fig. 4, step S102 can be performed by sealing monitoring and controlling unit, seal monitoring and controlling
Unit illustrates current with to battery bag progress when receiving the first immersion signal, charging signals or manual detection signal
The demand of sealing detection, now, inflated into seal cavity, until the air pressure in seal cavity rises to the first pre- level pressure by normal pressure
Stop inflation during power, wherein, the first predetermined pressure is more than normal pressure.Normal pressure is usually the atmospheric pressure of standard.
In this example, can be realized to being inflated in the seal cavity of battery bag by air pump, as shown in Fig. 2 air pump
Inflated after normally closed check valve 1 and air dry-set to battery bag inside (i.e. in seal cavity), or air pump is by normal
Inflated after closing check valve 2 to battery bag inside (i.e. in seal cavity).
First predetermined pressure can be detected to obtain by pressure sensor, as shown in Figure 2 and Figure 4, can be by being arranged on electricity
Pressure sensor P1 detections in battery bag in the bag of pond.Wherein, the first predetermined pressure can demarcate according to experiment or experience
Obtaining, the first predetermined pressure will meet the needs of being more than normal pressure, so, certain water can be prevented to immerse in battery bag, the
One predetermined pressure is represented with P0.
S103：Pressure release is carried out until the air pressure in seal cavity is down to normal pressure, and records to seal cavity by breather valve
Venting duration.
As shown in figure 4, by first immersion signal exemplified by, such as receive the first immersion signal, then need to paddle soak into
Row protection.At this point it is possible to after vehicle is paddled or is soaked, it is pre- that the air pressure in battery bag maintained first by step S102
Constant-pressure P0, so as to play the purpose for preventing certain water from immersing in battery bag.Then, because breather valve has balancing battery bag
The function of inner and outer air pressure, can with by breather valve to seal cavity carry out pressure release until seal cavity in air pressure be down to often
Pressure, and venting duration is recorded, venting duration is represented with t2.
S104：Judge whether venting duration was less than for first scheduled time.
Specifically, if seal cavity is good, without poor sealing, then by breather valve by the air pressure in seal cavity by
First predetermined pressure P0 pressure releases to the time of normal pressure be a standard time scope that can be obtained by Experimental Calibration.This
First scheduled time of inventive embodiments could be arranged to the lower limit time of the standard time scope.
S105：If it is, judging seal cavity gas leakage, and carry out leakage alarm.
Specifically, if venting duration t2 was less than for first scheduled time, i.e.,：Pressure release speed seals good compared to seal cavity
It is by breather valve that the air pressure in seal cavity is fast by the pressure release speed of the first predetermined pressure P0 pressure releases to normal pressure when good, illustrate close
There is gas leakage in envelope cavity, i.e.,：Seal cavity poor sealing.That is, if venting duration t2 was less than for first scheduled time,
It can determine that seal cavity has gas leakage, at this point it is possible to carry out leakage alarm.
According to the hermetization testing method of battery bag of the present invention, the close of battery bag can in real time, be effectively detected
Whether envelope state is good, carry out early warning poorly sealed to battery bag, so as to lift the safety and reliability of battery bag.
, can be to battery bag in charging mould if sealing detection signal is charging signals as a specific example
Sealing detection is carried out under formula.Specifically, with reference to shown in Fig. 2, if battery bag charging signals collector C1 collects charging letter
Number, then illustrate that electrokinetic cell is in charge mode, now in order to ensure the safety and reliability of charging process, it is necessary to battery
Bag carries out sealing detection.Specifically, air pump is opened, in this process, drying can be chosen whether according to the humidity of pumped air
Air, if necessary to dry air, then normally closed check valve F1 can be opened, such air enters electricity after air dry-set
In the bag of pond.Pressure in battery bag is increased to close air pump after P0, now normally closed check valve F1 and F2 is closed, because of breather valve and seam
Gap is present, and pressure P0 is reduced to normal pressure after t2 after a while in battery bag, if t2<T setting values lower limit is (i.e.：During standard
Between scope the lower limit time), then it is assumed that sealing state is bad, alarm sounds, and opens air pump, and bag internal pressure is insisted on into continuous maintain
P0 states, battery bag is entered with the water of resistance certain condition.If t2>The t setting values upper limit is (i.e.：During the lower limit of standard time scope
Between), then determine breather valve and abnormal, alarm sounds occur；If t2 in setting value (i.e.：Standard time scope) in, then without alarm,
Prompting sealing is normal, closes air pump.
As another specific example, if sealing detection signal is the first immersion signal, battery bag can be existed
Sealing detection is carried out under the conditions of immersion.Specifically, with reference to shown in Fig. 2 and Fig. 4, if battery bag immersed depth sensor J1 is examined
Measure immersion (i.e.：The immersion of output first signal), then illustrate that electrokinetic cell there may be the risk of immersion, now in order to ensure power
Safety and reliability when battery uses under this condition to battery bag, it is necessary to carry out sealing detection.Specifically, battery bag is soaked
Water depth sensor J1 monitors that electric car is in state of paddling, and opens air pump, chooses whether drying according to pumped air humidity
Air, then pressure in bag is increased to close air pump after P0, now normally closed check valve F1 and F2 is closed, because of breather valve and gap
In the presence of pressure P0 is reduced to normal pressure after t2 after a while in battery bag, if t2<T setting values lower limit is (i.e.：Standard time
The lower limit time of scope), then it is assumed that sealing state is bad, alarm sounds, and opens air pump, and bag internal pressure is insisted on and continuous maintains P0
State, battery bag is entered with the water of resistance certain condition.
As another specific example, the sealing state of battery bag can be detected at any time as needed.I.e.：With
Family manually opened switch or button, just trigger manual detection signal, now, just automatically turn on air pump, empty according to pumping
Air humidity degree chooses whether dry air, is then increased to pressure in bag to close air pump after P0, now normally closed check valve F1 and F2
Close, because breather valve and gap are present, pressure P0 is reduced to normal pressure after t2 after a while in battery bag, if t2<T is set
It is worth lower limit (i.e.：The lower limit time of standard time scope), then it is assumed that sealing state is bad, alarm sounds, so as in real time
Detect battery bag whether good seal.
With reference to shown in Fig. 2 and Fig. 4, if immersed depth is higher, such as：Immersed depth be immersed in the lower house of battery bag with
On, now, the method for the embodiment of the present invention also includes：
1st, detect whether to receive the second immersion signal.As shown in Fig. 2 battery bag immersed depth sensor J2 can be passed through
Whether sensed water level exceedes the lower house of battery bag, and generates the second immersion signal.
2nd, if it is, carrying out battery bag immersion alarm, and inflated into seal cavity, until the air pressure in seal cavity
First predetermined pressure is risen to by normal pressure, and the air pressure in seal cavity is maintained into the first predetermined pressure.It is thus possible to one
Determine water can be prevented to penetrate into inside battery bag in degree, battery bag is played a protective role, lifts the security of battery bag.
3rd, detect whether to receive the 3rd immersion signal.As shown in Fig. 2 battery bag immersed depth sensor J3 can be passed through
Whether sensed water level exceedes air pump, and generates the 3rd immersion signal
4th, if it is, carrying out vehicle immersion alarm, and the aerification function into seal cavity is disabled, i.e.,：Air pump is present
Into risk, therefore air pump is disabled, to avoid air pump from damaging.
That is, when J1 and J2 has a signal, during J3 no signals, air pump can be opened, is according to the selection of pumped air humidity
No dry air, the air pressure in battery bag is increased to P0, and using air pressure in air pump maintenance package, when J3 has signal, shown
Air pump air inlet may close pump gas by water submerged, play a part of protecting air pump, and avoid water being pumped into battery bag.
With reference to shown in Fig. 4, in this example, immersed depth corresponding to the second immersion signal, which is more than, corresponds to the first immersion letter
Immersed depth corresponding to number, immersed depth corresponding to the 3rd immersion signal are more than deep corresponding to immersion corresponding to the second immersion signal
Degree.
Whether the method for the embodiment of the present invention not only can good with the sealing property of effective detection battery bag, and this method may be used also
With effectively to being dehumidified in battery bag, so as to ensure the performance of battery bag and safety.Specifically, this method includes：
Whether the humidity the 1st, detected in seal cavity is more than the first predetermined moisture.
With reference to shown in Fig. 2, the humidity in seal cavity can be examined by the humidity sensor S1 being arranged in seal cavity
Measure.
2nd, if it is, being inflated into seal cavity, and by breathing valve exhaust, will pass through air-flow in seal cavity
Dehumidified.
Further, when being inflated into seal cavity, in addition to：
Whether the humidity for the gas for the 1st, judging to be filled with seal cavity is more than the second predetermined moisture.
2nd, if it is, the gas being filled with seal cavity is dried.
That is, the humidity in humidity sensor S1 monitoring battery bags, when the humidity value that humidity sensor S1 is monitored>
Set s1 (i.e.：First predetermined moisture) when, booster air pump, choose whether dry air (i.e. according to pumped air humidity：It is if big
In the second predetermined moisture, then drying is needed), pressure P0 in bag is controlled, the dry air inputted to battery bag will wrap interior moistening
Air gradually passes through breather valve discharge, when the humidity value that humidity sensor S1 is monitored<During s1, illustrate that air has been in bag
Drying regime, close air pump.It is thus possible to effectively be dehumidified to battery bag, the performance of battery bag is lifted.
It is understood that the first above-mentioned predetermined moisture and the second predetermined moisture can be advance according to experiment or experience
Demarcation obtains.
The method of the embodiment of the present invention can be judged according to the discouraged time battery bag whether good seal, the present invention
In other examples, can also be judged according to inflationtime battery bag whether good seal, specifically, this method is to annular seal space
Inflation in vivo, until during the air pressure in seal cavity stops inflation when rising to the first predetermined pressure by normal pressure, in addition to：
1st, inflationtime is recorded.
2nd, judge whether inflationtime was more than for second scheduled time.
3rd, if it is, judging seal cavity gas leakage, and leakage alarm is carried out.
That is, if battery bag good seal, the time of the first predetermined pressure is inflated in a mark from normal pressure
In accurate time range.Therefore, can be arranged to the lower limit time of the time range of the standard, i.e., second scheduled time：When filling
When the gas time was more than for second scheduled time, illustrate seal cavity gas leakage, it is necessary to inflationtime it is longer.It is thus possible in real time, have
Detect whether the sealing property of battery bag is good to effect.
In one embodiment of the invention, the hermetization testing method of battery bag also includes：
1st, judge whether venting duration was more than for the 3rd scheduled time.3rd scheduled time was the venting duration scope of standard
Upper limit time.
2nd, if it is, judging breather valve failure, and breather valve fault alarm is carried out, wherein, the 3rd scheduled time was more than
First scheduled time.
If that is, breather valve break down, such as：Breather valve blocks, it may not be possible to carries out battery bag well
Air pressure balance outside interior and battery bag, therefore venting duration is longer compared with normal venting duration, therefore, surpasses when this time
When spending for three scheduled times, it can be determined that have breather valve and failure occur, therefore alarmed, prompt related personnel to tie up in time
Repair, to ensure the safety and reliability of battery bag.
According to the hermetization testing method of battery bag of the present invention, the close of battery bag can in real time, be effectively detected
Whether envelope state is good, carry out early warning poorly sealed to battery bag, so as to lift the safety and reliability of battery bag.
Fig. 5 is the structured flowchart of the sealing detection system of battery bag according to an embodiment of the invention.As shown in figure 5,
The sealing detection system 500 of battery bag according to an embodiment of the invention, including：Detection means 510, the and of aerating device 520
Controller 530.
Wherein, detection means 510 is used to detect the pressure signal in the sealing detection signal and seal cavity of battery bag.Fill
Device of air 520 is used to inflate into the seal cavity.Controller 530 fills with the detection means 510 and the inflation respectively
Put 520 to be connected, during detecting the sealing detection signal of the battery bag in the detection means 510, control the inflation dress
Putting 520 controls when being inflated to the first predetermined pressure into the seal cavity aerating device 520 to stop inflation, and described
Breather valve to the seal cavity pressure release to normal pressure when, record venting duration, and judging the venting duration less than first
The seal cavity gas leakage is determined during the scheduled time, and carries out leakage alarm.
In one embodiment of the invention, sealing detection signal, which comprises at least, is used to detect the first of the first immersion signal
In immersed depth sensor, the charging signals collector for detecting charging signals and the switch for opening manual detection signal
One.
In one embodiment of the invention, the sealing detection system 500 of battery bag, in addition to：For detecting the second leaching
Second immersed depth sensor (being not shown in Fig. 5) of water signal, the controller 530 sense with second immersed depth
Device is connected, when the second immersed depth sensor detects the second immersion signal, to carry out battery bag immersion alarm,
And control the aerating device to be inflated into the seal cavity, and the air pressure in the seal cavity is maintained described first
Predetermined pressure；For detecting the 3rd immersed depth sensor (being not shown in Fig. 5) of the 3rd immersion signal, the controller
530 are connected with the 3rd immersed depth sensor, to detect the 3rd immersion in the 3rd immersed depth sensor
During signal, vehicle immersion alarm is carried out, and disables the aerating device, wherein, immersion corresponding to the second immersion signal is deep
Degree, which is more than, corresponds to immersed depth corresponding to the described first immersion signal, and immersed depth corresponding to the 3rd immersion signal is more than
Corresponding to immersed depth corresponding to the described second immersion signal.
In one embodiment of the invention, the sealing detection system 500 of battery bag, in addition to：For detecting annular seal space
The first humidity sensor (being not shown in Fig. 5) of internal humidity, the controller 530 and the first humidity sensor phase
Even, when being more than the first predetermined moisture with the humidity detected in first humidity sensor in the seal cavity, institute is controlled
State aerating device 520 to inflate into the seal cavity, to utilize the air-flow formed with the breathing valve exhaust to described close
Dehumidified in envelope cavity；Drying device (is not shown) in Fig. 5, and the drying device is arranged on the He of aerating device 520
Between the seal cavity；Second humidity sensor of the humidity for the gas being filled with for detection in the seal cavity is (in Fig. 5
It is not shown), the controller 530 is connected with second humidity sensor, to control the aerating device 520 to described
When being inflated in seal cavity, if it is judged that the humidity for the gas being filled with the seal cavity is more than the second predetermined moisture, then
Control the drying device that the gas being filled with the seal cavity is dried.
In one embodiment of the invention, the controller 530 is additionally operable to according to recording filling for the aerating device 520
The gas time, and when judging that the inflationtime was more than for second scheduled time, judge the seal cavity gas leakage, and carry out gas leakage
Alarm.
In one embodiment of the invention, controller 530 is additionally operable to judge whether the venting duration is pre- more than the 3rd
Fix time, if it is, judging the breather valve failure, and carry out breather valve fault alarm, wherein, the 3rd scheduled time
More than first scheduled time.
According to the sealing detection system of battery bag of the present invention, the close of battery bag can in real time, be effectively detected
Whether envelope state is good, carry out early warning poorly sealed to battery bag, so as to lift the safety and reliability of battery bag.
It should be noted that the specific implementation of the sealing detection system of the battery bag of the embodiment of the present invention and the present invention
The specific implementation of the hermetization testing method of the battery bag of embodiment is similar, specifically refers to the description of method part, in order to
Redundancy is reduced, is not repeated herein.
Further, embodiment of the invention discloses that a kind of vehicle, the vehicle are provided with any one implementation as described above
The sealing detection system of battery bag described in example, wherein, the vehicle is pure electric automobile or hybrid vehicle.Wherein, should
Vehicle is electric automobile or oil electricity hybrid vehicle (hybrid vehicle).The vehicle can in real time, effectively detect battery
Whether the sealing state of bag is good, carry out early warning poorly sealed to battery bag, so as to lift the security of battery bag and can
By property.
In addition, other compositions of vehicle according to embodiments of the present invention and effect are for one of ordinary skill in the art
For be all known, in order to reduce redundancy, do not repeat herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (17)
1. a kind of hermetization testing method of battery bag, it is characterised in that the battery bag includes seal cavity and positioned at described close
The electrokinetic cell sealed in cavity, the seal cavity are provided with breather valve, the described method comprises the following steps：
Detect whether to receive the sealing detection signal of battery bag；
If it is, inflated into the seal cavity, until the air pressure in the seal cavity rises to first by normal pressure and made a reservation for
Stop inflation during pressure；
By the breather valve to the seal cavity carry out pressure release until the seal cavity in air pressure be down to the normal pressure,
And record venting duration；
Judge whether the venting duration was less than for first scheduled time；
If it is, judging the seal cavity gas leakage, and carry out leakage alarm.
2. the hermetization testing method of battery bag according to claim 1, it is characterised in that the sealing detection signal is at least
Including one in the first immersion signal, charging signals and manual detection signal.
3. the hermetization testing method of battery bag according to claim 2, it is characterised in that also include：
Detect whether to receive the second immersion signal；
If it is, carrying out battery bag immersion alarm, and inflated into the seal cavity, until the gas in the seal cavity
Pressure rises to first predetermined pressure by normal pressure, and the air pressure in the seal cavity is maintained into the described first pre- level pressure
Power, wherein, immersed depth corresponding to the second immersion signal is more than deep corresponding to immersion corresponding to the described first immersion signal
Degree.
4. the hermetization testing method of battery bag according to claim 3, it is characterised in that also include：
Detect whether to receive the 3rd immersion signal；
If it is, carrying out vehicle immersion alarm, and the aerification function into the seal cavity is disabled, wherein, the described 3rd
The immersed depth corresponding to signal that soaks, which is more than, corresponds to immersed depth corresponding to the described second immersion signal.
5. the hermetization testing method of battery bag according to claim 1, it is characterised in that also include：
Detect whether the humidity in the seal cavity is more than the first predetermined moisture；
If it is, inflated into the seal cavity, and by the breathing valve exhaust, will pass through air-flow to the sealing
Dehumidified in cavity.
6. the hermetization testing method of battery bag according to claim 5, it is characterised in that wherein, to the annular seal space
In vivo during inflation, in addition to：
Whether the humidity for the gas for judging to be filled with the seal cavity is more than the second predetermined moisture；
If it is, the gas being filled with the seal cavity is dried.
7. the hermetization testing method of battery bag according to claim 1, it is characterised in that filled into the seal cavity
Gas, until during the air pressure in the seal cavity stops inflation when rising to the first predetermined pressure by normal pressure, in addition to：
Record inflationtime；
Judge whether the inflationtime was more than for second scheduled time；
If it is, judging the seal cavity gas leakage, and carry out leakage alarm.
8. the hermetization testing method of the battery bag according to claim any one of 1-7, it is characterised in that also include：
Judge whether the venting duration was more than for the 3rd scheduled time；
If it is, judging the breather valve failure, and breather valve fault alarm is carried out,
Wherein, the 3rd scheduled time is more than first scheduled time.
9. a kind of sealing detection system of battery bag, it is characterised in that the battery bag includes seal cavity and positioned at described close
The electrokinetic cell sealed in cavity, the seal cavity are provided with breather valve, and the system includes：
Detection means, the pressure signal in sealing detection signal and seal cavity for detecting battery bag；
Aerating device, the aerating device are used to inflate into the seal cavity；
Controller, the controller are connected with the detection means and the aerating device respectively, to be examined in the detection means
When measuring the sealing detection signal of the battery bag, the aerating device is controlled to be inflated to first into the seal cavity predetermined
Control the aerating device to stop inflation during pressure, and in the breather valve to the seal cavity pressure release to normal pressure when, record
Venting duration, and the seal cavity gas leakage is determined when judging that the venting duration was less than for first scheduled time, go forward side by side
Row leakage alarm.
10. the sealing detection system of battery bag according to claim 9, it is characterised in that the sealing detection signal is extremely
It is few to include being used for the first immersed depth sensor of the immersion signal of detection first, gathered for detecting the charging signals of charging signals
One in device and switch for opening manual detection signal.
11. the sealing detection system of battery bag according to claim 10, it is characterised in that also include：
For detecting the second immersed depth sensor of the second immersion signal, the controller senses with second immersed depth
Device is connected, when the second immersed depth sensor detects the second immersion signal, to carry out battery bag immersion alarm,
And control the aerating device to be inflated into the seal cavity, and the air pressure in the seal cavity is maintained described first
Predetermined pressure, wherein, immersed depth corresponding to the second immersion signal, which is more than, to be corresponded to corresponding to the described first immersion signal
Immersed depth.
12. the sealing detection system of battery bag according to claim 11, it is characterised in that also include：
For detecting the 3rd immersed depth sensor of the 3rd immersion signal, the controller senses with the 3rd immersed depth
Device is connected, when the 3rd immersed depth sensor detects the 3rd immersion signal, to carry out vehicle immersion alarm, and
The aerating device is disabled,
Wherein, immersed depth corresponding to the 3rd immersion signal is more than deep corresponding to immersion corresponding to the described second immersion signal
Degree.
13. the sealing detection system of battery bag according to claim 9, it is characterised in that also include：
For detecting the first humidity sensor of the humidity in seal cavity, the controller and the first humidity sensor phase
Even, when being more than the first predetermined moisture with the humidity detected in first humidity sensor in the seal cavity, institute is controlled
State aerating device to inflate into the seal cavity, to utilize the air-flow formed with the breathing valve exhaust to the annular seal space
Dehumidified in vivo.
14. the sealing detection system of battery bag according to claim 9, it is characterised in that also include：
Drying device, the drying device are arranged between the aerating device and the seal cavity；
For detecting the second humidity sensor of the humidity for being filled with gas in the seal cavity, the controller and described the
Two humidity sensors are connected, with when controlling the aerating device to be inflated into the seal cavity, if it is judged that being filled with institute
The humidity for stating the gas in seal cavity is more than the second predetermined moisture, then controls the drying device to being filled with the seal cavity
Interior gas is dried.
15. the sealing detection system of battery bag according to claim 9, it is characterised in that the controller is additionally operable to root
According to the inflationtime for recording the aerating device, and when judging that the inflationtime was more than for second scheduled time, described in judgement
Seal cavity gas leakage, and carry out leakage alarm.
16. the sealing detection system of the battery bag according to claim any one of 9-15, it is characterised in that the controller
It is additionally operable to judge whether the venting duration was more than for the 3rd scheduled time, if it is, judging the breather valve failure, and carries out
Breather valve fault alarm, wherein, the 3rd scheduled time is more than first scheduled time.
17. a kind of vehicle, it is characterised in that the vehicle sets close just like the battery bag described in claim any one of 9-16
Seal detecting system.
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| CN201610871932.2A CN107878204B (en) | 2016-09-30 | 2016-09-30 | Battery pack sealing detection method and system and vehicle |
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|---|---|---|---|
| CN201610871932.2A CN107878204B (en) | 2016-09-30 | 2016-09-30 | Battery pack sealing detection method and system and vehicle |
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| CN107878204B CN107878204B (en) | 2020-10-02 |
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| CN108956718A (en) * | 2018-09-05 | 2018-12-07 | 华霆（合肥）动力技术有限公司 | Combustible gas detecting device, power supply device and electric car |
| CN109164219A (en) * | 2018-11-15 | 2019-01-08 | 广东铭利达科技有限公司 | A kind of battery pack housing compactness detection device |
| CN109547047A (en) * | 2018-11-20 | 2019-03-29 | Oppo广东移动通信有限公司 | A kind of antenna tuning circuit and wireless telecom equipment |
| CN111735707A (en) * | 2020-06-29 | 2020-10-02 | 天津市捷威动力工业有限公司 | Method and device for testing packaging strength of lithium ion soft package battery |
| CN111982426A (en) * | 2020-07-22 | 2020-11-24 | 华人运通(江苏)动力电池系统有限公司 | Battery pack tightness detection method and device, electric vehicle and storage medium |
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| CN113500917A (en) * | 2021-06-24 | 2021-10-15 | 烟台创为新能源科技股份有限公司 | Method for charging protective gas into lithium ion battery box |
| CN113670522A (en) * | 2021-07-29 | 2021-11-19 | 恒大新能源技术(深圳)有限公司 | Liquid leakage detection method, liquid leakage detection device, and liquid leakage detection system |
| CN113771627A (en) * | 2020-06-05 | 2021-12-10 | 北京新能源汽车股份有限公司 | Power battery pack air tightness monitoring method and device and electric automobile |
| CN113948813A (en) * | 2020-07-17 | 2022-01-18 | 上海汽车集团股份有限公司 | Explosion-proof control system and method for power battery |
| WO2022068872A1 (en) * | 2020-09-30 | 2022-04-07 | 奥动新能源汽车科技有限公司 | Electric connection device and water inflow detection method therefor |
| CN115569320A (en) * | 2021-06-21 | 2023-01-06 | 宇通客车股份有限公司 | Vehicle, battery fireproof device thereof and control method |
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| CN113670522A (en) * | 2021-07-29 | 2021-11-19 | 恒大新能源技术(深圳)有限公司 | Liquid leakage detection method, liquid leakage detection device, and liquid leakage detection system |
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Effective date of registration: 20190128 Address after: 213000 168 Huacheng Road, Jintan District, Changzhou, Jiangsu Applicant after: SVOLT Energy Technology Co.,Ltd. Address before: No. 2266 Chaoyang South Street, Baoding City, Hebei Province, 071000 Applicant before: GREAT WALL MOTOR Co.,Ltd. |
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Address after: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: SVOLT Energy Technology Co.,Ltd. Address before: 213000 168 Huacheng Road, Jintan District, Changzhou, Jiangsu Patentee before: SVOLT Energy Technology Co.,Ltd. |