CN109521365A - Power battery box body protective capacities detection device and its detection method - Google Patents
Power battery box body protective capacities detection device and its detection method Download PDFInfo
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- CN109521365A CN109521365A CN201811473713.4A CN201811473713A CN109521365A CN 109521365 A CN109521365 A CN 109521365A CN 201811473713 A CN201811473713 A CN 201811473713A CN 109521365 A CN109521365 A CN 109521365A
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- power battery
- battery box
- box body
- management system
- protective capacities
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Abstract
The invention discloses a kind of power battery box body protective capacities detection device and its detection methods, and wherein detection device includes air pressure regulator, are controlled for adjusting the air pressure in power battery box body, and by Vehicular battery management system；Baroceptor for incuding the atmospheric pressure value of power battery box box house, and converts environmental information to after analog signal and is transferred to Vehicular battery management system；Vehicular battery management system converts digital signal for the atmospheric pressure value analog signal that baroceptor is sent, and judges whether power battery box body protective capacities fails according to air pressure inside value in power battery box.The present invention can detect power battery box body protective capacities whether because sealing ring aging or corrosion caused by permanent failure and detect power battery box body protective capacities whether because road on vibration caused by short duration failure.
Description
Technical field
The present invention relates to a kind of power battery box body protective capacities detection device and its detection methods.
Background technique
IP67 is the topic of a hot handful of comparison in electrokinetic cell system PACK.Domestic battery pack is substantially all can
To accomplish IP67.IP67 failure seldom will appear cabinet itself failure (such as: cabinet breakage, weld cracking etc., these are all
Compare intuitive, easy the problem of finding and improving), the failure of most of or installation interface, and installation interface failure, it would have to
More crucial component of IP67: Flexible element (sealing ring) is spoken of, many times, the validity of IP67 is really elastic
The validity of unit.The reason of being IP (INGRESS PROTECTION, protection) failure below:
1. the aging and corrosion of Flexible element.IP67 is dispatching from the factory in the production process of the PACK of present new-energy automobile
When be can guarantee it is effective, but over time, the aging of Flexible element and its be corroded, PACK cabinet
IP67 has the possibility of failure.
2. the tolerance of Flexible element, battery pack are mounted on vehicle, in vehicle travel process, due to the injustice on road surface,
Will lead to vehicle has certain distortion, and battery pack can also distort accordingly.This when, the decrement of Flexible element can also become therewith
Change, if exceeding the tolerance of Flexible element, will result in the short duration failure of IP67, if this when, vehicle was in flat drying
On road traveling not yet what big problem, if but this when of vehicle paddling, result is with regard to self-evident.
If IP is failed, but can not be detected, then huge security risk will be present in vehicle, it will to car owner
It causes greatly to injure.
Summary of the invention
The object of the present invention is to provide a kind of power battery box body protective capacities detection device and its detection methods.
Realizing the technical solution of the object of the invention is: a kind of power battery box body protective capacities detection device, including gas
Regulating device is pressed, is controlled for adjusting the air pressure in power battery box body, and by Vehicular battery management system；Air pressure sensing
Device is transferred to vehicle for incuding the atmospheric pressure value of power battery box box house, and after converting analog signal for environmental information
Battery management system；The atmospheric pressure value analog signal that baroceptor is sent is converted digital signal by Vehicular battery management system,
And judge whether power battery box body protective capacities fails according to air pressure inside value in power battery box.
The air pressure regulator is preferably air pump.
The first preferred technical solution: the baroceptor is set on the mainboard of Vehicular battery management system.
Second of preferred technical solution: the baroceptor is set on the slave plate of Vehicular battery management system, vehicle
The slave plate of battery management system is communicated by CAN and the mainboard of Vehicular battery management system.
The detection method of the power battery box body protective capacities detection device, comprising the following steps:
Step 1, after car key insertion wakes up Vehicular battery management system, Vehicular battery management system is first to power electric
Pond box body carries out conventional self-test, judges that there are security risks not to be available for power battery box if self-test does not pass through, if from
Inspection is by then entering in next step；
Step 2, Vehicular battery management system first pass through the initial gas that baroceptor obtains power battery box box house
Pressure value, Vehicular battery management system calculate the reasonable air pressure range not started in a relief valve according to initial gas pressure value, so
Control pressure regulating device adjusts the air pressure of power battery box box house afterwards；
Step 3, after the completion of air pressure adjustment process, Vehicular battery management system obtains power battery by baroceptor
Current gas pressure value inside box body, and this value is labeled as reduced value；
Step 4, after waiting time T1 after the atmospheric pressure value of acquisition power battery box box house in real time compared with reduced value
Compared with, it is shorter based on the time since temperature and cabinet deformation can have some impact on air pressure in case, determine specifically: if difference
It is larger, then it is determined as that power battery box body protective capacities fails, and prompt car owner's power battery box body protective capacities forever
Failure long, there are security risks, need repairing；If comparison result difference is smaller, it is determined as that power battery box body protects energy
Power is effective, and starts air pressure regulator after judgement and air pressure in case is restored to initial value.Time T1 is preferably 1 point
Clock.
Before vehicle launch, need to do a step 1 to deterministic process described in four, if before vehicle launch, just
Determine that IP is failed, it is believed that, sealing ring is because aging, corrosion cause active force battery box body protective capacities to fail, the failure
For permanent failure, need to be replaced；After vehicle launch, vibration is inevitably had in the process of running, if only in vehicle launch
A step 1 is done to fourth is that inadequate, therefore needs following steps also to be judged:
Step 5, after vehicle start-up, the process of the step 2 to four are periodically done once every time T2, constantly weight
It is multiple, if occurring the case where power battery box body protective capacities failure, Vehicular battery management system in vehicle operation
It alarms to vehicle, prompts the failure of car owner's power battery box body protective capacities transience, not paddle, until the knot of detection next time
Fruit is not the failure of power battery box body protective capacities, cancels alarm.Time T2 is preferably 1 hour.
Using above-mentioned technical proposal, the present invention has the following beneficial effects: the present invention can detect power battery box
Whether cabinet protective capacities can detect power battery box case because of permanent failure caused by the aging or corrosion of sealing ring
Whether body protective capacities is because of short duration failure caused by the vibration on road.It can be for power battery box case caused by different reasons
Different prompts is given in the failure of body protective capacities, can also greatly reduce the failure occurred in vehicle operation cause it is serious after
Fruit can greatly reduce the security risk as caused by the failure of power battery box body protective capacities.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail, wherein
Fig. 1 is the functional block diagram of power battery box body protective capacities detection device of the invention.
Label in attached drawing are as follows:
Air pressure regulator 1, baroceptor 2, Vehicular battery management system 3, power battery box body 4.
Specific embodiment
(embodiment 1)
See Fig. 1, the power battery box body protective capacities detection device of the present embodiment, including air pressure regulator 1, air pressure
Sensor 2 and Vehicular battery management system 3.
Air pressure regulator 1, for adjusting the air pressure in power battery box body 4, and by Vehicular battery management system 3
Control.Baroceptor 2 is set on the mainboard of Vehicular battery management system 3, for incuding the gas inside power battery box body 4
Pressure value, and convert environmental information to after analog signal and be transferred to Vehicular battery management system 3.Vehicular battery management system 3, will
The atmospheric pressure value analog signal that baroceptor 2 is sent is converted into digital signal, and according to air pressure inside value in power battery box
Judge whether 4 protective capacities of power battery box body fails.Air pressure regulator 1 is preferably air pump.
The detection method of the power battery box body protective capacities detection device of the present embodiment, comprising the following steps:
Step 1, after car key insertion wakes up Vehicular battery management system 3, Vehicular battery management system 3 is first to power
Battery box body 4 carries out conventional self-test, judges that there are security risks not to be available for power battery box if self-test does not pass through, if
Self-test is by then entering in next step；
Step 2, Vehicular battery management system 3 first pass through first inside the acquisition power battery box body 4 of baroceptor 2
Beginning atmospheric pressure value, Vehicular battery management system 3 calculate the reasonable air pressure model not started in a relief valve according to initial gas pressure value
It encloses, then control pressure regulating device 1 is inflated to power battery box body 4；
Step 3, after the completion of gas replenishment process, Vehicular battery management system 3 obtains power battery box by baroceptor 2
Current gas pressure value inside cabinet 4, and this value is labeled as reduced value；
Step 4, after waiting time T1 after the atmospheric pressure value inside acquisition power battery box body 4 and reduced value progress in real time
Compare, it is shorter based on the time since temperature and cabinet deformation can have some impact on air pressure in case, determine specifically: if phase
Difference is larger, then is determined as that 4 protective capacities of power battery box body fails, and prompt 4 protective capacities of car owner's power battery box body
Permanent failure, there are security risks, need repairing；If comparison result difference is smaller, it is determined as that power battery box body 4 is anti-
Shield ability is effective, and starts air pressure regulator 1 after judgement and air pressure in case is restored to initial value.Time, T1 was preferably
1 minute.
Before vehicle launch, need to do a step 1 to deterministic process described in four, if before vehicle launch, just
Determine that IP is failed, it is believed that, sealing ring is because aging, corrosion cause 4 protective capacities of active force battery box body to fail, the failure
For permanent failure, need to be replaced；After vehicle launch, vibration is inevitably had in the process of running, if only in vehicle launch
A step 1 is done to fourth is that inadequate, therefore needs following steps also to be judged:
Step 5, after vehicle start-up, the process of the step 2 to four are periodically done once every time T2, constantly weight
It is multiple, if occurring the case where 4 protective capacities of power battery box body failure, Vehicular battery management system in vehicle operation
3 alarm to vehicle, prompt the failure of 4 protective capacities transience of car owner's power battery box body, not paddle, until detection next time
As a result it is not the failure of 4 protective capacities of power battery box body, cancels alarm.Time T2 is preferably 1 hour.
(embodiment 2)
The present embodiment is substantially the same manner as Example 1, the difference is that: baroceptor 2 is set to Vehicular battery management system
On the slave plate of system 3, the slave plate of Vehicular battery management system 3 is communicated by CAN and the mainboard of Vehicular battery management system 3.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (5)
1. a kind of power battery box body protective capacities detection device, it is characterised in that: including air pressure regulator, for adjusting
Air pressure in power battery box body, and controlled by Vehicular battery management system；
Baroceptor is converted into analog signal for incuding the atmospheric pressure value of power battery box box house, and by environmental information
After be transferred to Vehicular battery management system；
The atmospheric pressure value analog signal that baroceptor is sent is converted digital signal by Vehicular battery management system, and according to
Air pressure inside value judges whether power battery box body protective capacities fails in power battery box.
2. a kind of power battery box body protective capacities detection device according to claim 1, it is characterised in that: the gas
Pressure sensor is set on the mainboard of Vehicular battery management system.
3. a kind of power battery box body protective capacities detection device according to claim 1, it is characterised in that: the gas
Pressure sensor is set on the slave plate of Vehicular battery management system, and the slave plate of Vehicular battery management system passes through CAN and Vehicular battery
The mainboard of management system communicates.
4. a kind of detection method of power battery box body protective capacities detection device, it is characterised in that: the following steps are included:
Step 1, after car key insertion wakes up Vehicular battery management system, Vehicular battery management system is first to power battery box
Cabinet carries out conventional self-test, judges that there are security risks not to be available for power battery box if self-test does not pass through, if self-test is logical
It crosses and then enters in next step；
Step 2, Vehicular battery management system first pass through the initial gas pressure that baroceptor obtains power battery box box house
Value, Vehicular battery management system calculate the reasonable air pressure range not started in a relief valve according to initial gas pressure value, then
Control pressure regulating device adjusts the air pressure in power battery box body；
Step 3, after the completion of air pressure adjustment process, Vehicular battery management system passes through baroceptor and obtains power battery box case
The current gas pressure value in internal portion, and this value is labeled as reduced value；
Step 4, the atmospheric pressure value for acquiring power battery box box house after waiting time T1 in real time are compared with reduced value, by
Air pressure in case can be had some impact in temperature and cabinet deformation, it is shorter based on the time, determine specifically: if difference is larger,
Then it is determined as that power battery box body protective capacities fails, and car owner's power battery box body protective capacities is prompted permanently to lose
Effect, there are security risks, need repairing；If comparison result difference is smaller, it is determined as that power battery box body protective capacities has
Effect, and start air pressure regulator after judgement and air pressure in case is restored to initial value.
5. a kind of detection method of power battery box body protective capacities detection device according to claim 4, feature
It is: further comprising the steps of:
Step 5, after vehicle start-up, the process of the step 2 to four are periodically done once every time T2, are constantly repeated,
If occurring the case where power battery box body protective capacities failure in vehicle operation, Vehicular battery management system is to whole
Vehicle alarm, prompt car owner's power battery box body protective capacities transience failure, not paddle, until next time detection result not
It is the failure of power battery box body protective capacities, cancels alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811473713.4A CN109521365A (en) | 2018-12-04 | 2018-12-04 | Power battery box body protective capacities detection device and its detection method |
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| CN201811473713.4A CN109521365A (en) | 2018-12-04 | 2018-12-04 | Power battery box body protective capacities detection device and its detection method |
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Cited By (3)
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| CN110474004A (en) * | 2019-08-19 | 2019-11-19 | 潍坊工程职业学院 | A kind of power accumulator cabinet positive air pressure maintenance system and method |
| CN112026583A (en) * | 2019-06-03 | 2020-12-04 | 北汽福田汽车股份有限公司 | Method and system for detecting battery pack and vehicle |
| CN112835397A (en) * | 2021-01-04 | 2021-05-25 | 中车青岛四方车辆研究所有限公司 | Box body sealing state monitoring and evaluating method and monitoring system |
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Application publication date: 20190326 |