CN109406122A - A kind of pipeline performance rapid detection system and detection method for liquid cooling battery pack - Google Patents
A kind of pipeline performance rapid detection system and detection method for liquid cooling battery pack Download PDFInfo
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- CN109406122A CN109406122A CN201811366051.0A CN201811366051A CN109406122A CN 109406122 A CN109406122 A CN 109406122A CN 201811366051 A CN201811366051 A CN 201811366051A CN 109406122 A CN109406122 A CN 109406122A
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- 239000007788 liquid Substances 0.000 title claims abstract description 81
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000007789 gas Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 14
- 239000002826 coolant Substances 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 230000002528 anti-freeze Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 208000001034 Frostbite Diseases 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a kind of pipeline performance rapid detection systems for liquid cooling battery pack, including liquid nitrogen gas tank, equipment control cabinet and water tank；The liquid nitrogen gas tank setting is on the ground；The equipment control cabinet connects control cabinet pipeline by liquid nitrogen and connect with liquid nitrogen gas tank；The tested battery is connect by battery air inlet pipeline with equipment control cabinet；The water tank is connect by battery outlet pipe with tested battery.The present invention can accomplish fast verifying speed, gas noresidue, save electric power energy and manpower using the pipeline state inside cheap liquid nitrogen verifying battery system.
Description
Technical field
The present invention relates to the technical fields of new-energy automobile power battery detection, more particularly to one kind to be used for liquid cooling battery pack
Pipeline performance rapid detection system and detection method.
Background technique
Novel new-energy automobile power battery pack, due to the raising of its dustproof and waterproof grade, mostly using water-cooled
Cooling system has a set of closed coolant liquid circulation line in inside battery, passes through the liter of the cyclic inhibition battery of coolant liquid
Temperature.Pipeline in automobile water pump or Air-conditioning Cycle pipeline be connected, by radiator and it is extraneous carry out heat exchange, generally use
As coolant liquid, coolant liquid is flowed into after battery system cools down to it by interior water pump to flow out anti-icing fluid based on ethylene glycol,
Heat is replaced by radiator to external system.
The existing vehicle-mounted liquid cooling circulatory system is made of circulation line, water tank, water pump, temperature sensor, hot-water heating PTC.
The pipeline of inside battery always has the unreasonable place of design in the process of design, production, assembly.Due to it is this not
Rationally, it may cause phenomena such as internal temperature of battery differs greatly, battery cooling effect is bad, and since water-cooled plate sticks not
The technique and quality problems for sternly causing battery cooling effect bad.The technique for so how efficiently quickly examining pipe-line system
And quality level, design rationality etc. is with regard to needing to invent a kind of pipeline performance rapid detection system for liquid cooling battery pack.
Conventional authentication pipe-line system performance does not have good method, even if in the design process by being difficult CAE analysis yet
Guarantee that performance in the actual process meets design requirement.There are also a kind of method of water pump system by using simulating vehicle,
Lead to the anti-icing fluid based on ethylene glycol i.e. in the pipeline of battery, low-temperature antifreeze liquid reduces battery temperature, battery by battery pipeline
Temperature data is fed back to engineer and judged by interior temperature sensor, and the indexs such as battery homogeneity and target temperature can be sentenced
The fit-state of disconnected pipeline.
In the implementation of the present invention, inventor has found that the prior art at least has the disadvantage in that
1. this method needs to be passed through anti-icing fluid, prepares low-temperature antifreeze liquid and need to consume a large amount of electric power resource；
2. elapsed time is long, prepares low-temperature antifreeze liquid and need 1 time more than hour；
3. each battery also needs to expend a large amount of manpower and empty anti-icing fluid after being passed through anti-icing fluid detection, not only waste
Resource, and the 5S of production scene is influenced very big.
4. anti-icing fluid is difficult to empty after the completion of test, new antifreeze when remaining anti-icing fluid may pollute battery entrucking
Liquid.
Summary of the invention
The purpose of the present invention is to provide a kind of for the pipeline performance rapid detection system of liquid cooling battery pack and detection side
Method, which solve above-mentioned technical problems.
The present invention solves technical problem and adopts the following technical scheme that a kind of pipeline performance for liquid cooling battery pack is quickly examined
Examining system, including liquid nitrogen gas tank, equipment control cabinet and water tank；
The liquid nitrogen gas tank setting is on the ground；The equipment control cabinet connects control cabinet pipeline and liquid nitrogen gas by liquid nitrogen
Tank connection；Tested battery is connect by battery air inlet pipeline with equipment control cabinet；The water tank passes through battery outlet pipe and quilt
Survey battery connection；
The equipment control cabinet includes equipment control cabinet air inlet port, first class pressure sensor, level-one proportioning valve, level-one temperature
Spend sensor, secondary pressure sensor, the 1st second level proportioning valve, the 2nd second level proportioning valve, three-level pressure sensor, flow sensing
Device, second level temperature sensor, equipment control cabinet air outlet, device controller and touch screen；
The equipment control cabinet air inlet port is arranged on the shell of equipment control cabinet；The liquid nitrogen connects control cabinet pipeline
It is connect by equipment control cabinet air inlet port with equipment control cabinet；The equipment control cabinet air outlet is arranged in equipment control cabinet
Cabinet body on；The pipe of supplied gas flowing is provided between the equipment control cabinet air inlet port and equipment control cabinet air outlet
Road；The air inlet of the level-one proportioning valve is connect by pipeline with equipment control cabinet air inlet port；The first class pressure sensor
It is arranged on the pipeline between equipment control cabinet air inlet port and level-one proportioning valve air inlet；The 1st second level proportioning valve and the 2nd
Second level proportioning valve is connected in parallel, and the gas outlet of its shared air inlet and level-one proportioning valve passes through piping connection；The level-one
Temperature sensor and secondary pressure sensor are successively set on level-one proportioning valve and the 1st second level proportioning valve and the 2nd second level proportioning valve
On pipeline between shared air inlet；The air inlet of the flow sensor and the 1st second level proportioning valve and the 2nd second level ratio
The shared gas outlet of example valve passes through pipe by piping connection, the water outlet and equipment control cabinet air outlet of the flow sensor
Road connection；The air inlet and the 1st second level proportioning valve and the 2nd second level ratio of flow sensor is arranged in the three-level pressure sensor
On pipeline between the shared gas outlet of valve；Gas outlet and the equipment control of flow sensor is arranged in the second level temperature sensor
On pipeline between cabinet air outlet processed；The device controller is arranged in equipment control cabinet；The touch screen setting is being set
The hull outside of standby control cabinet.
Further, the liquid nitrogen connection control cabinet pipeline is the pipeline of external cladding heat-barrier material.
Further, the tested inside battery is provided with closed coolant liquid circulation line and temperature sensor.
Further, outer loop water inlet pipeline and outer loop water outlet pipeline are provided on the water tank；The water
Case is connect by battery outlet pipe with tested battery, and wherein battery outlet pipe is connect with the gas outlet of tested battery.
The detection method of the pipeline performance rapid detection system of liquid cooling battery pack of the invention:
S1. connecting line；
S2. the controlled valve of liquid nitrogen gas tank is opened, liquid nitrogen becomes cryogenic gas and flows into equipment control cabinet；
S3. the first class pressure sensor of equipment control cabinet, level-one temperature sensor and secondary pressure sensor are by gas
Pressure and temperature feeds back to PLC controller, and PLC controller adjusts level-one proportioning valve, gas is made tentatively to reach target temperature and stream
Speed；
S4. it is preliminary adjust after cryogenic gas by second level proportioning valve, three-level pressure sensor, second level temperature sensor and
Enter tested battery pack air inlet after flow sensor, at this time three-level pressure sensor, second level temperature sensor and flow sensing
The data of device are also passed to PLC controller, and PLC controller adjusts the 1st second level proportioning valve and the 2nd second level proportioning valve, reaches gas
Target temperature, pressure and flow velocity；
S5. when gas is flowed through inside battery pack, the temperature sensor inside battery pack is by data feedback to engineer, engineering
Teacher judges whether to reach requirement；
S6. cryogenic gas is connected to water tank after battery pack outlet pipeline, and after water tank, nitrogen is discharged to cryogenic gas
Atmosphere.
The invention has the following beneficial effects:
It, can be with using the pipeline state inside cheap liquid nitrogen verifying battery system 1. the system that the present invention designs
Accomplish fast verifying speed, gas noresidue, save electric power energy and manpower.
2. control of the invention is accurate, cryogenic gas can be allow to flow through electricity with the target temperature of setting, pressure, flow velocity
Pond packet is internal.
It, can be to avoid by battery by recirculated water 3. recirculated water of the gas finally by flowing is discharged into atmosphere in the present invention
Internal some impurity take in air, can also be to avoid operator's frost bitten, the circulation of flowing by the nitrogen of recirculated water
Water can also avoid contact with cryogenic gas and freeze.
4. coolant liquid transfer pipeline is all wrapped up with thermal insulation material, temperature leak in transmission process is avoided.
Detailed description of the invention
Fig. 1 is a kind of plan structure signal of pipeline performance rapid detection system for liquid cooling battery pack of the invention
Figure；
Fig. 2 is a kind of control cabinet layout structure of pipeline performance rapid detection system for liquid cooling battery pack of the invention
Schematic diagram；
Fig. 3 is a kind of facing structure signal of pipeline performance rapid detection system for liquid cooling battery pack of the invention
Figure；
Fig. 4 is a kind of stereochemical structure signal of pipeline performance rapid detection system for liquid cooling battery pack of the invention
Figure；
Fig. 5 is a kind of control flow block diagram of pipeline performance rapid detection system for liquid cooling battery pack of the invention.
Description of symbols: 1- liquid nitrogen gas tank；2- liquid nitrogen connects control cabinet pipeline；3- is tested battery；4- battery air inlet pipe
Road；5- battery outlet pipe；6- equipment control cabinet；7- outer loop water inlet pipeline；8- water tank；9- outer loop water outlet pipe
Road；10- equipment control cabinet air inlet port；11- first class pressure sensor；12- level-one proportioning valve；13- level-one temperature sensor；
14- secondary pressure sensor；The 1st second level proportioning valve of 15-；The 2nd second level proportioning valve of 16-；17- three-level pressure sensor；18- flow
Sensor；19- second level temperature sensor；20- equipment control cabinet air outlet；21- device controller；22- touch screen.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to examples and drawings.
Embodiment 1
Present embodiments provide a kind of pipeline performance rapid detection system for liquid cooling battery pack, including liquid nitrogen gas tank 1,
Equipment control cabinet 6 and water tank 8；
The liquid nitrogen gas tank 1 is arranged on the ground, and 1 bottom of liquid nitrogen gas tank is provided with universal wheel, and the liquid nitrogen gas tank 1 can
To be moved freely by universal wheel；The equipment control cabinet 6 connects control cabinet pipeline 2 by liquid nitrogen and connect with liquid nitrogen gas tank 1,
In the present embodiment, the liquid nitrogen connection control cabinet pipeline 2 is specially the pipeline of external cladding heat-barrier material, and then can prevent liquid
Energy dissipation of nitrogen during entering equipment control cabinet 6；The tested battery 3 is controlled by battery air inlet pipeline 4 and equipment
Cabinet 6 connects, and design has the pipeline for nitrogen flow in the tested battery 3；The water tank 8 passes through battery outlet pipe 5 and quilt
Battery 3 is surveyed to connect.
In the present embodiment, the gas outlet of liquid nitrogen gas tank connects control cabinet pipeline connection by the liquid nitrogen with heat insulation function and arrives
Equipment control cabinet, liquid nitrogen become the controllable gas of low temperature flow velocity after equipment control cabinet carries out decompression and temperature control.
The equipment control cabinet 6 includes equipment control cabinet air inlet port 10, first class pressure sensor 11, level-one proportioning valve
12, level-one temperature sensor 13, secondary pressure sensor 14, the 1st second level proportioning valve 15, the 2nd second level proportioning valve 16, three stage pressures
Sensor 17, flow sensor 18, second level temperature sensor 19, equipment control cabinet air outlet 20, device controller 21 and touching
Control screen 22；
The equipment control cabinet air inlet port 10 is arranged on the shell of equipment control cabinet 6；The liquid nitrogen connects control cabinet
Pipeline 2 is connect by equipment control cabinet air inlet port 10 with equipment control cabinet 6；The setting of equipment control cabinet air outlet 20 exists
On the cabinet body of equipment control cabinet 6；It in the present embodiment, can be with self-setting equipment control cabinet air inlet port 10 and equipment control cabinet
The position of air outlet 20 is interpreted as the design of the present embodiment as long as can satisfy the mounting arrangements of equipment；The equipment control
The pipeline of supplied gas flowing is provided between cabinet air inlet port 10 processed and equipment control cabinet air outlet 20, in the present embodiment,
Shape and the position of pipeline can be in the light of actual conditions set；The air inlet of the level-one proportioning valve 12 passes through pipeline and equipment control
Cabinet air inlet port 10 processed connects；The first class pressure sensor 11 is arranged in equipment control cabinet air inlet port 10 and level-one proportioning valve
On pipeline between 12 air inlets；The 1st second level proportioning valve 15 is connected in parallel with the 2nd second level proportioning valve 16, and its is shared
The gas outlet of air inlet and level-one proportioning valve 12 passes through piping connection；The level-one temperature sensor 13 and secondary pressure sensor
14 are successively set between the air inlet that level-one proportioning valve 12 and the 1st second level proportioning valve 15 and the 2nd second level proportioning valve 16 share
On pipeline；The air inlet of the flow sensor 18 and the 1st second level proportioning valve 15 and the 2nd second level proportioning valve 16 it is shared go out
Port passes through piping connection by piping connection, the water outlet and equipment control cabinet air outlet 20 of the flow sensor 18；
The air inlet and the 1st second level proportioning valve 15 and the 2nd second level ratio of flow sensor 18 is arranged in the three-level pressure sensor 17
On pipeline between the shared gas outlet of valve 16；The second level temperature sensor 19 be arranged in the gas outlet of flow sensor 18 with
On pipeline between equipment control cabinet air outlet 20；The device controller 21 is arranged in equipment control cabinet 6, and can control
The automatic adjustment of each proportioning valve；The touch screen 22 is arranged in the hull outside of equipment control cabinet 6, and can on the touchscreen into
The setting of row low-pressure gas can also show the pressure and temperature value of current cryogenic gas.
The tested inside battery is provided with closed coolant liquid circulation line and temperature sensor, cryogenic gas and passes through electricity
Pond pipeline reduces battery temperature, and temperature data is fed back to engineer and judged by the temperature sensor in battery.
In the present embodiment, cryogenic gas is connected to water tank 8 after the discharge of battery outlet pipe 5, and water tank 8 is a connection
The flow cistern of plant circulation water, cryogenic gas is in water tank by being discharged in air after heat exchange.
Outer loop water inlet pipeline 7 and outer loop water outlet pipeline 9 are provided on the water tank 8；The water tank 8 is logical
It crosses battery outlet pipe 5 to connect with tested battery 3, wherein battery outlet pipe 5 is connect with the gas outlet of tested battery 3.At this
In embodiment, gas is directly entered in water tank 8 by battery outlet pipe 5, is then discharged after the circulating water treatment of flowing
Into atmosphere, cryogenic gas can take in air by circulating water treatment to avoid by some impurity of inside battery pipeline, and
And the nitrogen Jing Guo circulating water treatment can also can also avoid contact with low temperature to avoid operator's frost bitten, the recirculated water of flowing
Gas and freeze.
Such as Fig. 1, a kind of pipeline performance rapid detection system for liquid cooling battery pack, the structure of this system are as follows: liquid nitrogen gas
The gas outlet of tank 1 is connect by the external pipeline for coating heat-barrier material with equipment control cabinet 6, liquid nitrogen pass through equipment control cabinet 6 into
Become low temperature flow velocity controllable gas after row decompression and temperature control, equipment control cabinet air outlet 20 is connected by battery air inlet pipeline 4
Tested battery 3 is connect, cryogenic gas is connected to water tank 8, water tank 8 after tested 3 internal circulation of battery, by battery outlet pipe 5
It is connected by outer loop water inlet pipeline 7 with outer loop water outlet pipeline 9, keeping water is flow regime.
Equipment control cabinet internal structure are as follows: liquid nitrogen enters equipment control cabinet 6 by liquid nitrogen connection control cabinet pipeline 2, successively passes through
After crossing first class pressure sensor 11, level-one proportioning valve 12, level-one temperature sensor 13 and secondary pressure sensor 14, into parallel connection
The 1st second level proportioning valve 15 and the 2nd second level proportioning valve 16, gas converge after after three-level pressure sensor 17 by flow pass
After sensor 18 and second level temperature sensor 19, tested battery 3 is flowed into from equipment control cabinet air outlet 20.
This detection system makes low-pressure nitrogen, by the pipe-line system of battery pack, pass through battery pack with certain flow velocity and temperature
Temperature sensor read internal temperature of battery, by temperature uniformity and temperature objectives demand, efficient quick signal piping
Fit-state.
Embodiment 2
Present embodiments provide the detection method of the pipeline performance rapid detection system of liquid cooling battery pack of the invention:
Electric control system in the present invention is completed by SIEMENS S 7-200 PLC controller, control flow block diagram such as Fig. 5
It is shown.
Test starts after the completion of piping connection.
The controlled valve of liquid nitrogen gas tank 1 is first turned on, liquid nitrogen becomes cryogenic gas and flows into equipment control cabinet 6, equipment control
The first class pressure sensor 11 of cabinet 6, level-one temperature sensor 13 and secondary pressure sensor 14 are anti-by the pressure and temperature of gas
It feeds PLC controller, PLC controller adjusts level-one proportioning valve 12, and gas is made tentatively to reach target temperature and flow velocity, preliminary to adjust
Cryogenic gas afterwards passes through the 1st second level proportioning valve 15, the 2nd second level proportioning valve 16, three-level pressure sensor 17, second level temperature sensing
Enter the air inlet of tested battery 3 after device 19 and flow sensor 18, at this time three-level pressure sensor 17, second level temperature sensor
19 and the data of flow sensor 18 be also passed to PLC controller, PLC controller adjusts the 1st second level proportioning valve 15 and the 2nd second level ratio
Example valve 16, makes gas reach target temperature, pressure and flow velocity.Purpose using a pair of second level proportioning valve in parallel makes outlet
Gas characteristic is more accurate.
When gas flows through tested 3 inside of battery, the temperature sensor inside battery 3 is tested by data feedback to engineer,
Engineer judges whether to reach design requirement.
Cryogenic gas is connected to water tank 8 through battery outlet pipe 5, and water tank 8 is the circulating water of a connection plant circulation water
Case, for cryogenic gas after water tank 8, nitrogen is discharged to atmosphere, to avoid frostbite operator, uses the purpose of flow cistern
It is that low temperature nitrogen is avoided to make water freezing.
Power battery product is detected using the pipeline performance rapid detection system of liquid cooling battery pack of the invention, judgement
It is intact that standard is whether its water-cooled plate is bonded, and principle is: water-cooled plate is bonded the bad corresponding electricity that will lead to water-cooled plate cooling
Chi Mo group cooling effect is poor, so that the temperature difference of the battery modules posted with other water-cooled plates is generated, if the temperature difference is more than 10 DEG C,
Then illustrate that the battery is unqualified.Wherein in test process, the flow rate of low temperature nitrogen, pressure and temperature be respectively 10L/min,
Not less than 2Mpa and -30 DEG C.
Its test process is, first by the equipment control cabinet air outlet of the air inlet of tested battery 3 and this system
20 are connected, and the gas outlet of tested battery 3 is connected with water tank 8；The equipment control cabinet air inlet port of liquid nitrogen gas tank 1 opening and this system
10 are connected.
It is then turned on 1 valve of liquid nitrogen gas tank, liquid nitrogen flows into system by the road, and pressure reduction therebetween becomes cryogenic gas.First
By first class pressure sensor 11, level-one temperature sensor 13 and secondary pressure sensor 14, at this time sensor by numerical value such as:
6Mpa, -50 DEG C, 5Mpa pass to device controller 21, device controller 21 adjusts 12 aperture of level-one proportioning valve, makes every numerical value
Coarse adjustment is to target value.Cryogenic gas continues through the 1st second level proportioning valve 15, the 2nd second level proportioning valve 16, three-level pressure sensor
17, second level temperature sensor 19 and flow sensor 18, numerical value are also passed to device controller 21,21 basis of device controller
Target call continues to adjust the 1st second level proportioning valve 15 and the 2nd second level proportioning valve 16 in parallel, reaches its temperature, flow velocity and pressure
To target call 10L/min, 3Mpa, -30 DEG C.The process is a recursive process, constantly corrects ratio by sensing data
The aperture of example valve, reaches target indicator.
Whether engineer is by the internal temperature of battery sensor data analysis temperature difference more than 10 DEG C.
Low temperature nitrogen inside battery system drains into circulating water chennel through battery system gas outlet, to avoid the band from pipeline
Presumable foreign matter is walked to indoor and cryogenic gas frostbite operator.The specific heat of water is sufficiently large and is flow regime, therefore will not
It freezes because of low temperature nitrogen, nitrogen is non-toxic gas, can be directly discharged in air.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented in foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the technical solution for various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (6)
1. a kind of pipeline performance rapid detection system for liquid cooling battery pack, including liquid nitrogen gas tank, equipment control cabinet and water tank；
The liquid nitrogen gas tank setting is on the ground；The equipment control cabinet connects control cabinet pipeline by liquid nitrogen and liquid nitrogen gas tank connects
It connects；Tested battery is connect by battery air inlet pipeline with equipment control cabinet；The water tank passes through battery outlet pipe and tested electricity
Pond connection.
2. a kind of pipeline performance rapid detection system for liquid cooling battery pack according to claim 1, which is characterized in that
The equipment control cabinet includes equipment control cabinet air inlet port, first class pressure sensor, level-one proportioning valve, level-one temperature sensing
Device, secondary pressure sensor, the 1st second level proportioning valve, the 2nd second level proportioning valve, three-level pressure sensor, flow sensor, second level
Temperature sensor and equipment control cabinet air outlet；
The equipment control cabinet air inlet port is arranged on the shell of equipment control cabinet；The liquid nitrogen connection control cabinet pipeline passes through
Equipment control cabinet air inlet port is connect with equipment control cabinet；The cabinet of equipment control cabinet is arranged in the equipment control cabinet air outlet
On body；The pipeline of supplied gas flowing is provided between the equipment control cabinet air inlet port and equipment control cabinet air outlet；Institute
The air inlet for stating level-one proportioning valve is connect by pipeline with equipment control cabinet air inlet port；The first class pressure sensor setting exists
On pipeline between equipment control cabinet air inlet port and level-one proportioning valve air inlet；The 1st second level proportioning valve and the 2nd second level ratio
Example valve is connected in parallel, and the gas outlet of its shared air inlet and level-one proportioning valve passes through piping connection；The level-one temperature passes
It is shared that sensor and secondary pressure sensor are successively set on level-one proportioning valve and the 1st second level proportioning valve and the 2nd second level proportioning valve
On pipeline between air inlet；The air inlet of the flow sensor and the 1st second level proportioning valve and the 2nd second level proportioning valve
Shared gas outlet is connected by piping connection, the water outlet and equipment control cabinet air outlet of the flow sensor by pipeline
It connects；The air inlet and the 1st second level proportioning valve and the 2nd second level proportioning valve of flow sensor is arranged in the three-level pressure sensor
On pipeline between shared gas outlet；Gas outlet and the equipment control cabinet of flow sensor is arranged in the second level temperature sensor
On pipeline between air outlet.
3. a kind of pipeline performance rapid detection system for liquid cooling battery pack according to claim 1, which is characterized in that
The liquid nitrogen connection control cabinet pipeline is the pipeline of external cladding heat-barrier material.
4. a kind of pipeline performance rapid detection system for liquid cooling battery pack according to claim 1, which is characterized in that
The tested inside battery is provided with closed coolant liquid circulation line and temperature sensor.
5. a kind of pipeline performance rapid detection system for liquid cooling battery pack according to claim 1, which is characterized in that
Outer loop water inlet pipeline and outer loop water outlet pipeline are provided on the water tank；The water tank passes through battery escape pipe
Road is connect with tested battery, and wherein battery outlet pipe is connect with the gas outlet of tested battery.
6. the detection side of any one pipeline performance rapid detection system for being used for liquid cooling battery pack described in claim 1-5
Method:
S1. connecting line；
S2. the controlled valve of liquid nitrogen gas tank is opened, liquid nitrogen becomes cryogenic gas and flows into equipment control cabinet；
S3. the first class pressure sensor of equipment control cabinet, level-one temperature sensor and secondary pressure sensor are by the pressure of gas
With temperature feedback to PLC controller, PLC controller adjusts level-one proportioning valve, gas is made tentatively to reach target temperature and flow velocity；
S4. the cryogenic gas after preliminary adjusting passes through second level proportioning valve, three-level pressure sensor, second level temperature sensor and flow
Enter tested battery pack air inlet after sensor, at this time three-level pressure sensor, second level temperature sensor and flow sensor
Data are also passed to PLC controller, and PLC controller adjusts the 1st second level proportioning valve and the 2nd second level proportioning valve, gas is made to reach target
Temperature, pressure and flow velocity；
S5. when gas is flowed through inside battery pack, by data feedback to engineer, engineer sentences the temperature sensor inside battery pack
It is disconnected whether to reach requirement；
S6. cryogenic gas is connected to water tank after battery pack outlet pipeline, and after water tank, nitrogen is discharged to greatly cryogenic gas
Gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366051.0A CN109406122A (en) | 2018-11-16 | 2018-11-16 | A kind of pipeline performance rapid detection system and detection method for liquid cooling battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366051.0A CN109406122A (en) | 2018-11-16 | 2018-11-16 | A kind of pipeline performance rapid detection system and detection method for liquid cooling battery pack |
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