CN107331818A - A kind of ternary battery pack safeguard construction provided with displacement apparatus - Google Patents
A kind of ternary battery pack safeguard construction provided with displacement apparatus Download PDFInfo
- Publication number
- CN107331818A CN107331818A CN201710685304.XA CN201710685304A CN107331818A CN 107331818 A CN107331818 A CN 107331818A CN 201710685304 A CN201710685304 A CN 201710685304A CN 107331818 A CN107331818 A CN 107331818A
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- China
- Prior art keywords
- gas
- battery pack
- valve
- battery case
- displacement apparatus
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
-
- 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
- H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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
Abstract
The present invention, which discloses to be provided with battery pack, battery pack in a kind of ternary battery pack safeguard construction provided with displacement apparatus, including the battery case and air ventilation device being connected, battery case, is provided with multiple cells；Battery case has the housing of sealing structure, and case top is provided with relief valve, and housing both sides, which are respectively provided with a valve cock, housing, is full of fire-retardant gas；Air ventilation device includes：Substitution gas generation unit, discharge gas buffer unit, displacement controller, air inlet electromagnetic valve, outlet magnetic valve and two gas transmission pipelines, substitution gas generation unit are connected with discharge gas buffer unit；Air inlet electromagnetic valve and outlet magnetic valve are respectively arranged on two gas transmission pipelines, the two ends of gas transmission pipeline provided with air inlet electromagnetic valve are respectively connected to a valve cock and substitution gas generation unit for battery case, and the two ends of the gas transmission pipeline provided with outlet magnetic valve are respectively connected to another valve cock and discharge gas buffer unit.
Description
Technical field
The present invention relates to ternary technical field of lithium batteries, more particularly to a kind of ternary battery pack safety provided with displacement apparatus
Structure.
Background technology
The security performance of ternary lithium battery is the problem of current driving force battery industry is most paid close attention to.Ternary battery is due to cyclicity
Can be good, the advantages of energy density is high is progressively applied on new-energy automobile.But ternary material battery core is in terms of security performance,
Especially because overcharging the thermal runaway of initiation and there is the phenomenon of easy blast on fire on lancing test, it is impossible to pass through security
It can detect, define its large-scale application in electrokinetic cell.In actual motion, due to reasons such as vibration, collisions, it is likely that
Trigger the puncture of ternary battery core, leakage.Because ternary material battery core thermal structure is unstable, high temperature safety is poor, and pH value is too high
Easily make monomer flatulence, and the chemistry reflection of ternary lithium material is more violent, can discharge oxygen molecule, the electrolyte under high temperature action
Rapid burning, occurs chain reaction.In order to expand the use scope of ternary battery, safety Design is the task of top priority.
In order to improve the security performance of ternary battery, the security protection at present to ternary battery is main from internal material improvement
Carried out with the aspect of external structure piece optimization two.Internal material, which is improved, mainly includes positive electrode surface cladding, modified electrode or barrier film material
The methods such as material, feature electrolysis additive, external structure piece optimization mainly passes through explosion-proof valve threshold value, discharge device, PTC temperature-sensitives
Element adds the means such as insulation protection liquid to improve ternary battery safety in battery case.
Although preceding method has properly increased the security performance of ternary battery, have the following disadvantages：Material improvement can
So that ternary battery avoids thermal runaway when overcharging with short-circuit test, but internal short-circuit of battery can still be led when puncturing
Cause battery catches fire；Feature electrolysis additive can reduce the high rate performance and cycle performance of ternary battery to a certain extent；
External safeguard procedures still have certain risk, such as the method that insulation protection liquid is added in battery case, considerably increase
Battery case weight, and cost is higher, because the thermal runaway that battery material triggers in itself can aggravate decomposition and the barrier film oxygen of electrolyte
Change, when electrolyte leakage occurs for battery the relief valve on battery case can be caused to open, cause potential safety hazard.
The content of the invention
There is provided a kind of ternary battery pack safety provided with displacement apparatus for deficiency of the invention for the presence of above-mentioned prior art
Structure, fire-retardant gas is injected in ternary battery case, and oxygen concentration in battery case is monitored using oxygen concentration sensor, and oxygen concentration exceedes
Gas displacement is carried out during combustion threshold, oxygen concentration in case is maintained at below combustion threshold, the heat mistake of ternary battery can be effectively prevented
Control the fire triggered.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of ternary battery pack safeguard construction provided with displacement apparatus, including the battery case being connected and gas displacement dress
Put, wherein, it is provided with the battery case in battery pack, the battery pack and is provided with multiple cells；The battery case has close
The housing of seal structure, case top is provided with relief valve, and housing both sides, which are respectively provided with a valve cock, housing, is full of fire-retardant gas；
The air ventilation device includes：Substitution gas generation unit, discharge gas buffer unit, displacement controller, air inlet electromagnetic valve,
Outlet magnetic valve and two gas transmission pipelines, wherein, the substitution gas generation unit produces substitution gas, itself and the row
Go out gas buffer unit to be connected；The displacement controller is controlled to the replacement process of gas；The air inlet electromagnetic valve and
The outlet magnetic valve is respectively arranged on two gas transmission pipelines, the two ends point of the gas transmission pipeline provided with air inlet electromagnetic valve
A valve cock of battery case and the substitution gas generation unit of air ventilation device, the gas provided with outlet magnetic valve are not connected to
The two ends of conveyance conduit are respectively connected to another valve cock of battery case and the discharge gas buffer unit of air ventilation device.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, controller for detection and extinguishing device are additionally provided with the battery case, the controller for detection includes number
According to detection device and control device, the parameters in battery case are monitored in real time and are controlled.
Further, the data detecting device includes：Oxygen concentration sensor, pressure sensor, gas sensor, temperature
Sensor and Smoke Sensor.
Further, it can be carried out provided with communication connection between the controller for detection in the displacement controller and battery case
Data transfer.
Preferably, the extinguishing device uses clean gas extinguisher.
Alternatively, the fire-retardant gas is N2、CO2, He or Ar.
Alternatively, the fire-retardant gas is or heptafluoro-propane, HFC-236fa.
Preferably, the discharge gas buffer unit is also associated with tail gas transfer passage, and the gas displaced is carried
Place that is pure or being discharged to scarcity, prevents from causing asphyxia to be poisoned.
Compared with prior art, the present invention can produce following technique effect：
1st, fire-retardant gas is filled with battery case, oxygen concentration in case is maintained at below combustion threshold, three can be prevented effectively from
The phenomenon on fire that first battery triggers by electrolyte leakage or thermal runaway；
2nd, oxygen concentration value in battery case is detected in real time, when oxygen concentration is higher than electrolyte combustion threshold alarm, notifies work
Personnel, and then line replacement is entered to the gas in battery case by air ventilation device, while detecting pressure in battery case, prevent from putting
Pressure is excessive in battery case during changing breaks through relief valve, until oxygen concentration is dropped to below secure threshold, improves ternary battery
Security performance；Gas displacement is convenient, economically feasible, easy care.
Brief description of the drawings
Fig. 1 is the structural representation of the ternary battery pack safeguard construction provided with displacement apparatus of the present invention；
In the accompanying drawings, the list of designations represented by each label is as follows：
100 battery cases
101 battery packs
102 housings
103 relief valves
104 valve cocks
200 air ventilation devices
201 substitution gas generation units
202 discharge gas buffer units
203 displacement controllers
204 air inlet electromagnetic valves
205 outlet magnetic valves
206 gas transmission pipelines
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Please also refer to shown in Fig. 1, Fig. 1 shows for the structure of the ternary battery pack safeguard construction provided with displacement apparatus of the present invention
It is intended to, the safeguard construction includes the battery case 100 and air ventilation device 200 being connected, wherein,
It is provided with the battery case 100 in battery pack 101, the battery pack 101 and is provided with multiple cells；The battery
Case 100 has the housing 102 of sealing structure, and case top is provided with relief valve 103, and housing both sides are provided with valve cock 104, housing
Full of fire-retardant gas；Wherein,
The fire-retardant gas can be N2、CO2, the clean gas such as inert gas or heptafluoro-propane, HFC-236fa such as He or Ar,
It is every all to can be considered selection standard scope without the flammable, material with characteristics such as preferable stability under gaseous state；
In addition, being additionally provided with controller for detection 105 and extinguishing device 106 in the battery case 100, controller for detection includes number
According to detection device and control device, for monitoring the parameters in battery case in real time, and with control function, when monitoring electricity
Extinguishing device suppression thermal runaway can be started during the thermal runaway of pond to spread；Data detecting device includes oxygen concentration sensor, pressure sensing
Device, gas sensor, temperature sensor and Smoke Sensor；Extinguishing device preferentially uses clean gas extinguisher, can be urgent
In the case of start, prevent battery thermal runaway from spreading.Controller for detection is reserved with communication interface, can be with battery management system, vehicle
Controller, intelligence instrument, air ventilation device etc. are communicated, and upload Monitoring Data and warning message.
The air ventilation device 200 includes：Substitution gas generation unit 201, discharge gas buffer unit 202, displacement
Controller 203, air inlet electromagnetic valve 204, outlet magnetic valve 205 and two gas transmission pipelines 206, wherein,
The substitution gas generation unit 201 is used to produce substitution gas, itself and the phase of discharge gas buffer unit 202
Connection；
The displacement controller 203 is used to be controlled the replacement process of gas；Preferably, the displacement controller
203 and battery case in controller for detection 105 have communication connection, can carry out data transmission；
The air inlet electromagnetic valve 204 and the outlet magnetic valve 205 are respectively arranged on two gas transmission pipelines 206, if
The two ends for having the gas transmission pipeline of air inlet electromagnetic valve are respectively connected to a valve cock of battery case and putting for air ventilation device
Gas production unit 201 is changed, the two ends of the gas transmission pipeline provided with outlet magnetic valve are respectively connected to another gas of battery case
The discharge gas buffer unit of door mouth and air ventilation device.
Preferably, the discharge gas buffer unit 202 is also associated with tail gas transfer passage, and the gas displaced is carried out
The place of scarcity is purified or be discharged to, prevents from causing asphyxia to be poisoned.
In the ternary battery pack safeguard construction provided with displacement apparatus of the present invention, fire-retardant gas is full of in the battery case
Oxygen concentration, pressure, gas, smog and temperature parameter in body, the real-time monitoring case of controller for detection during normal operation in battery case,
When oxygen concentration exceeds combustion threshold, controller for detection is alarmed, and notifies staff to put the gas in battery case
Change；Substitution gas generation unit is connected by gas transmission pipeline with battery case valve cock, discharge gas buffer unit and battery
Another valve cock of case is connected.Controller for detection and displacement controller in battery case are communicated, by the electricity real-time monitored
Oxygen concentration, pressure, gas, smog, temperature parameter send displacement controller in the case of pond.Displacement controller sends control signal,
Open air inlet electromagnetic valve and outlet magnetic valve enters line replacement to the gas in battery case.Substitution gas generation unit output gas
Pressure is P1, and the pressure of discharge gas buffer unit porch is that pressure is P3, P1 ＞ P2=during substitution gas in P2, battery case
P3.The setting of air ventilation device two ends magnetic valve may be such that the pressure in battery case is maintained in stability range.Work as oxygen concentration
When dropping to below combustion threshold, the connection of battery case and air ventilation device is disconnected, each valve is closed, is replaced.
When controller for detection judges to occur in battery case electrolyte leakage according to each detection parameter, alarm signal is sent,
Staff is notified to be overhauled；When judging generation thermal runaway in battery case, controller for detection sends emergency alarm,
And start extinguishing device, suppress battery thermal runaway early and spread.
In the ternary battery pack safeguard construction provided with displacement apparatus of the present invention, fire-retardant gas is filled with battery case,
Oxygen concentration in case is maintained at below combustion threshold, can effectively prevent ternary battery because electrolyte is leaked or of thermal runaway initiation
Fiery phenomenon, and the high rate performance and cycle performance of battery will not be reduced, do not result in other potential safety hazards；Gas displacement is convenient,
Economically feasible, easy care；Extinguishing device in case can in case of emergency start, and occur battery heat once detecting in battery case
It is out of control, extinguishing device can be started and temporarily suppressed, be that next step processing is raced against time.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (8)
1. a kind of ternary battery pack safeguard construction provided with displacement apparatus, it is characterised in that the battery case including being connected is gentle
Body displacement apparatus, wherein,
It is provided with the battery case in battery pack, the battery pack and is provided with multiple cells；There is the battery case sealing to tie
The housing of structure, case top is provided with relief valve, and housing both sides, which are respectively provided with a valve cock, housing, is full of fire-retardant gas；
The air ventilation device includes：Substitution gas generation unit, discharge gas buffer unit, replace controller, enter pneumoelectric
Magnet valve, outlet magnetic valve and two gas transmission pipelines, wherein, the substitution gas generation unit produces substitution gas, its with
The discharge gas buffer unit is connected；The displacement controller is controlled to the replacement process of gas；
The air inlet electromagnetic valve and the outlet magnetic valve are respectively arranged on two gas transmission pipelines, provided with air inlet electromagnetic valve
The two ends of gas transmission pipeline are respectively connected to a valve cock of battery case and the substitution gas generation unit of air ventilation device,
The two ends of gas transmission pipeline provided with outlet magnetic valve are respectively connected to another valve cock and air ventilation device of battery case
Discharge gas buffer unit.
2. the ternary battery pack safeguard construction according to claim 1 provided with displacement apparatus, it is characterised in that the battery
Controller for detection and extinguishing device are additionally provided with case, the controller for detection includes data detecting device and control device, in real time
Monitor the parameters in battery case and be controlled.
3. the ternary battery pack safeguard construction according to claim 2 provided with displacement apparatus, it is characterised in that the data
Detection device includes：Oxygen concentration sensor, pressure sensor, gas sensor, temperature sensor and Smoke Sensor.
4. the ternary battery pack safeguard construction provided with displacement apparatus according to Claims 2 or 3, it is characterised in that described
Provided with communication connection between controller for detection in displacement controller and battery case, it can carry out data transmission.
5. the ternary battery pack safeguard construction provided with displacement apparatus according to Claims 2 or 3, it is characterised in that described
Extinguishing device uses clean gas extinguisher.
6. the ternary battery pack safeguard construction provided with displacement apparatus according to any one of claims 1 to 3, its feature exists
In the fire-retardant gas is N2、CO2, He or Ar.
7. the ternary battery pack safeguard construction provided with displacement apparatus according to any one of claims 1 to 3, its feature exists
In the fire-retardant gas is heptafluoro-propane or HFC-236fa.
8. the ternary battery pack safeguard construction provided with displacement apparatus according to any one of claims 1 to 3, its feature exists
In the discharge gas buffer unit is also associated with tail gas transfer passage, and people is purified or be discharged to by the gas displaced
The rare place of member, prevents from causing asphyxia to be poisoned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685304.XA CN107331818B (en) | 2017-08-11 | 2017-08-11 | Ternary battery pack safety structure with replacement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685304.XA CN107331818B (en) | 2017-08-11 | 2017-08-11 | Ternary battery pack safety structure with replacement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107331818A true CN107331818A (en) | 2017-11-07 |
| CN107331818B CN107331818B (en) | 2023-06-02 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710685304.XA Active CN107331818B (en) | 2017-08-11 | 2017-08-11 | Ternary battery pack safety structure with replacement device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871836A (en) * | 2017-12-21 | 2018-04-03 | 张家港清研再制造产业研究院有限公司 | A kind of lithium-ion battery systems safety protection device and method |
| CN109103390A (en) * | 2018-07-27 | 2018-12-28 | 清华大学 | Lithium-ion battery systems and energy-consuming product |
| IT201900017213A1 (en) * | 2019-09-25 | 2021-03-25 | Iveco Spa | BATTERY PACK FOR ELECTRIC VEHICLE WITH SAFETY SYSTEM FOR THERMAL RUNAWAY |
| WO2021138947A1 (en) * | 2020-01-06 | 2021-07-15 | 烟台创为新能源科技股份有限公司 | Lithium ion battery box explosion suppression device and method |
| CN113879090A (en) * | 2021-09-27 | 2022-01-04 | 金娇荣 | Chassis system on new energy automobile |
| CN116454426A (en) * | 2023-06-16 | 2023-07-18 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871836A (en) * | 2017-12-21 | 2018-04-03 | 张家港清研再制造产业研究院有限公司 | A kind of lithium-ion battery systems safety protection device and method |
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| CN109103390B (en) * | 2018-07-27 | 2024-01-05 | 清华大学 | Lithium ion battery system and energy consumption product |
| IT201900017213A1 (en) * | 2019-09-25 | 2021-03-25 | Iveco Spa | BATTERY PACK FOR ELECTRIC VEHICLE WITH SAFETY SYSTEM FOR THERMAL RUNAWAY |
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| CN113879090A (en) * | 2021-09-27 | 2022-01-04 | 金娇荣 | Chassis system on new energy automobile |
| CN113879090B (en) * | 2021-09-27 | 2023-02-03 | 金娇荣 | Chassis system on new energy automobile |
| CN116454426A (en) * | 2023-06-16 | 2023-07-18 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
| CN116454426B (en) * | 2023-06-16 | 2023-08-22 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107331818B (en) | 2023-06-02 |
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