CN105733339A - Thermal decomposition material, clad material for power system and power system - Google Patents
Thermal decomposition material, clad material for power system and power system Download PDFInfo
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- CN105733339A CN105733339A CN201610077762.0A CN201610077762A CN105733339A CN 105733339 A CN105733339 A CN 105733339A CN 201610077762 A CN201610077762 A CN 201610077762A CN 105733339 A CN105733339 A CN 105733339A
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- foaming agent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/36—After-treatment
- C08J9/365—Coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a thermal decomposition material, a clad material for a power system and the power system, and belongs to the technical field of energy storage devices.The thermal decomposition material is prepared from, by weight, 0-100% of an inorganic foaming agent, 0-100% of an organic foaming agent and 0-30% of auxiliaries.The inorganic foaming agent is one or more of sodium bicarbonate, sodium carbonate, ammonium bicardonate and ammonium carbonate.The organic foaming agent is azodicarbonamide and or hydrazides compounds.According to the thermal decomposition material, the inorganic foaming agent and the organic foaming agent are blended according to different proportions, specific decomposed gas can be released at the certain temperature, and the thermal decomposition material is arranged inside a box of the power system; when the local temperature of the power system is increased to a set value, the thermal decomposition material will release corresponding gas, and the temperature changing conditions inside the power system can be known only by monitoring the concentration of the gas.
Description
Technical field
The present invention relates to a kind of thermal cracking material, power-supply system covering material and power-supply system, belong to energy storage device technology neck
Territory.
Background technology
Statistical data according to associated mechanisms shows, China's new-energy automobile sales volume in 2015 is expected to reach 22 ten thousand to 25 ten thousand
Level, 1-10 month China new-energy automobile in 2015 is accumulative produces 181225, cumulative sale 171145, with
Than increasing by 2.7 times and 2.9 times respectively, wherein pure electric automobile adds up volume of production and marketing and is respectively 121099 and 113810, together
Than increasing by 3.3 times and 3.9 times respectively；Plug-in hybrid-power automobile adds up volume of production and marketing and is respectively 60126 and 57335,
Increasing by 1.9 times and 1.8 times on a year-on-year basis, ev industry development presents good growth momentum.
Along with the expansion of the industry size of electric automobile, the probability that electric automobile security incident occurs also is becoming larger, domestic
Outer all occur in that a lot of electric motor car security incident, external as overheated in tesla's electric car charger on fire, driving process is sent out
In raw vehicle spontaneous combustion, docking process, spontaneous combustion occurring, fertile indigo plant reaches (Chevrolet) electric motor car and shelves three weeks after side collision is tested
There is spontaneous combustion；Domestic collide in the process of moving such as certain brand electric automobile after there is vehicle spontaneous combustion and cause personnel to hinder
Dying, the spontaneous combustion on fire in running of certain brand hybrid-power bus, certain brand hybrid-power bus occurs in parking lot
Spontaneous combustion is on fire causes 11 vehicles burn and cause casualties, and certain brand super capacity public transport car is lighted in running certainly
Fire, on fire in certain brand pure electric bus driving process, the pure electric bus of certain brand is on fire in charging process.Safety is asked
Topic always affects the key factor of ev industry development, the most serious security incident once occurs, it will to being in
The new-energy automobile industry of developmental stage causes crushing blow, and therefore, the safety improving electric automobile becomes present stage
Problem demanding prompt solution.
In terms of the occurrence cause of the electric motor car security incident occurred, analysis finds, electric motor car safety failure mainly has tripartite
, there is the reason master of safety failure in face: driving process safety failure, charging process safety failure, static process safety failure
Have:
1) for being that the dynamical system of energy vehicle mostly have employed and uses the lithium ion battery of organic electrolyte or super capacitor,
Organic electrolyte once leaks, and easily burns；
2) component units of dynamical system is large number of, wayward, as tesla's electric motor car uses more than 7000 18650
Cylindrical battery, the most supporting high capacity lithium ion battery of domestic electric motor car, but number of batteries is the most more, it is not easy to realizes
Security control to every battery；
3) voltage of power-supply system is higher, and generally individually more than 300V, safety coefficient is relatively low；
4) insulating Design of power-supply system is unreasonable, is easily generated leakage current, leaky site formed electric arc cause local heating or
Person is on fire；
5) heat management system of power-supply system can not monitor the variations in temperature of each cell well, it is impossible to monitors
The thermal runaway of the internal local of power-supply system；
6) the collision protection design of power-supply system is not in place, easily causes electricity after the battery gross distortion that collision causes occurs in car load
Pond short circuit, and cause thermal runaway；
7) high-voltage wiring harness of power-supply system, low voltage wiring harness design unreasonable, cause high-voltage wiring harness or low voltage wiring harness short circuit, office
Heat up or on fire in portion；
8) there is leak in safety control system design, entire car controller, BMS, safety monitoring system not peace to battery
Total state forms omnibearing monitoring, it is impossible to produced problem is carried out early warning and process；
9) existing key components and parts lithium ion battery design, production and quality management and control lack technical foundation, lithium ion battery
Can lack with security evaluation means, car load and key components and parts relevant safety standard disappearance, cause the design of enterprise and produce nothing
Standard can depend on, and causes the security monitoring of a lot of power-supply system product and controls device disappearance, being susceptible to safety failure.
In sum, design a kind of can various potential safety hazards within conduct monitoring at all levels power-supply system, to power-supply system inside
The safety failure occurred carries out reporting to the police and taking the high safety power supply system of control measure to seem particularly necessary in time.
By the monitoring of gas judging, the safety problem that battery occurs is a kind of effective monitoring method, application publication number is
The Chinese invention patent (Shen Qing Publication day is on June 3rd, 2015) of CN104677949A discloses a kind of electricity pool gas
Concentration Testing warning circuit, this circuit includes power circuit, testing circuit, change-over circuit, warning circuit, its testing circuit
Can detect gas concentration, when gas concentration exceedes threshold value, output gas concentration exceeds standard signal, by change-over circuit
Receive this and exceed standard signal and output switch control signal carries out audio alert to warning circuit, warning circuit.This gas detecting report
Alert circuit is that the gas producing battery self detects, and the concentration of this gas is relevant with the reaction of inside battery, with battery
Temperature unrelated, therefore cannot monitor the local thermal runaway of battery.Power-supply system of the prior art includes power supply box, power supply
Being provided with power module in case, how monitoring the internal local thermal runaway occurred of power supply box becomes solution power-supply system safety and asks
The key of topic.
Summary of the invention
It is an object of the invention to provide one and can decompose to give off detectable decomposition when power-supply system internal temperature raises
The thermal cracking material of gas.The present invention also aims to provide a kind of power-supply system covering material and inside to be covered with this bag
Cover the power-supply system of material.
In order to realize object above, the technical scheme of the thermal cracking material of the present invention is as follows:
A kind of thermal cracking material, including the component of following percentage by weight: inorganic foaming agent 0-100%, organic foaming agent
0-100%, auxiliary agent 0-30%；Described inorganic foaming agent is the one in sodium bicarbonate, sodium carbonate, ammonium hydrogen carbonate, ammonium carbonate
Or it is several；Described organic foaming agent is azodicarbonamide and/or sulfonyl hydrazines compound.
The thermal cracking material of the present invention is allocated in varing proportions by inorganic foaming agent and organic foaming agent, it is possible in certain temperature
The lower decomposition of degree discharges specific decomposition gas, this thermal cracking material is arranged on power-supply system box house, works as power-supply system
When local temperature is increased to setting value, this thermal cracking material will discharge corresponding gas, only need to monitor the concentration of this gas
I.e. can be appreciated that the temperature variations within power-supply system, it is to avoid prior art installs temperature at power-supply system box house
Detector carries out position limitation and the monitoring hysteresis quality of monitoring temperature, it is possible to monitor timely and accurately in power-supply system casing
The temperature anomaly situation of any one point of portion.
The thermal cracking material of the present invention more preferably includes the component of following percentage by weight: inorganic foaming agent 5%-95%,
Organic foaming agent 5%-95%, auxiliary agent 5%-30%.
Described auxiliary agent is zinc oxide and/or organic zinc compound.Wherein organic zinc is zinc stearate.Described auxiliary agent is the most excellent
Elect zinc oxide as.
Described sulfonyl hydrazines compound is for aoxidizing two benzene sulfonyl hydrazides or 4,4 '-OBSH.
Described inorganic foaming agent is preferably sodium bicarbonate.
The thermal cracking material of the present invention is further preferably for be made up of the component of following parts by weight: the inorganic foaming agent of 5%-95%
Sodium bicarbonate (NaHCO3), the organic foaming agent azodicarbonamide of 5%-95%, 5%-95% organic foaming agent to oxidation hexichol
Sulfohydrazide, the auxiliary agent zinc oxide (ZnO) of 5%-30%.
The thermal decomposition of the thermal cracking material of the present invention the temperature discharging decomposition gas are 70 ± 5 DEG C-200 ± 5 DEG C, further
It is preferably 90 ± 5 DEG C-160 ± 5 DEG C.
The technical scheme of the power-supply system covering material of the present invention is as follows:
A kind of power-supply system covering material, including base material and the above-mentioned thermal cracking material being attached on base material.
Described thermal cracking material is coated in described substrate surface；Or described base material is porous substrate, and described thermal cracking material is attached
In the hole of porous substrate.
Described base material is the one in rubber, polypropylene (PP) or polrvinyl chloride (PVC).Described polrvinyl chloride is pure
Polrvinyl chloride or heat resistance modified polrvinyl chloride.
Power-supply system covering material prepares in the following way: using porous substrate, surface and the inside of this base material have greatly
Metering-orifice structure, by above-mentioned thermal cracking material mix homogeneously, is filled in the pore structure within porous substrate, concora crush, to obtain final product.
Power-supply system covering material or prepare in the following way: by above-mentioned thermal cracking material, PTFE or PVDF mixing all
Even, it is coated in substrate surface, concora crush, to setting thickness, to obtain final product.Described setting thickness is less than 10mm, more preferably
Less than 5mm.
The gross thickness of the power-supply system covering material in described power supply box is less than 10mm, more preferably less than 5mm,
Ensure that thermal cracking material can be in close contact with component surface and guarantee that heat can be timely transmitted to decomposed substance.This thickness enters
One step is preferably no more than 2mm.
Described decomposition gas is CO, CO2、NH3、N2, one or several in steam.These divide at a certain temperature
Solve the material of gas generated have nontoxic, odorless, pollution-free, do not react with water in air, stable storing and without fire
The feature that calamity is dangerous.Decomposition gas is with N2、CO2For optimal choice.
The insulation resistance of power-supply system covering material is more than 500 Ω/V.
The technical scheme of the power-supply system of the present invention is as follows:
A kind of power-supply system, including power supply box, is provided with above-mentioned power-supply system covering material and use in described power supply box
The decomposition gas detector that the decomposition gas releasing power-supply system covering material decomposes detects, described power supply
System also includes the alarm device being connected with described decomposition gas detector.
The power-supply system of the present invention is by arranging one layer of covering material inside the power supply box of power-supply system, it is possible at specified temp
Interval decomposed generates detectable decomposition gas, and arranges the detection of gas being used for detecting decomposition gas inside power-supply system
Device, it is possible to realizing the comprehensive monitoring of the temperature to power-supply system box house, power-supply system also includes alarm device, works as gas
When the concentration of the decomposition gas that detector detects is up to or over setting value, alarm device is reported to the police, and makes operator
Understand the safe condition of power-supply system box house in time, confirm the security situation that power-supply system and vehicle run.
The volatilization gas detector for detecting power supply box electrolyte inside volatilization gas, described volatilization it is provided with in described power supply box
Gas detector is connected with described alarm device.Due to the power supply single in power-supply system in abnormal cases, such as power supply single
Overcharge, collide or power supply single quality abnormal etc. can cause electrolyte to reveal, at power-supply system box house, Volatile Gas is installed
Bulk detector, it is possible to the gas concentration that electrolyte volatilizes detected in time, i.e. reports to the police after exceeding setting value.
The flame detector of the spark being provided with in described power supply box in detecting power supply box, described flame detector is with described
Alarm device is connected.At power-supply system box house, flame detector is installed, it is possible to owing to patching in detection power-supply system casing
The contacting of part and electrical contact point loosens the electric spark causing " DC Line Fault electric arc " and produce, and then the power supply system that gives warning in advance
The safety problem of system.
Described power-supply system includes the control device being connected with described alarm device, is provided with fire extinguisher, institute in described power supply box
State fire extinguisher to be connected with described control device.At the integrated fire extinguisher of power-supply system box house, occur in power-supply system casing
The when that electric spark being more or degree more seriously even the extremities such as naked light occurs, controlling device can start in time
Fire extinguisher, puts out a fire to power-supply system box house.This fire extinguisher also can be by operator according to the warning feelings of alarm device
Condition carries out manually booting putting out a fire.
Described fire extinguisher is the one in dry powder extinguisher, aerosol fire extinguisher.
Being provided with power module in described power-supply system, described power module includes power supply single, and described power-supply system is coated with
Material is arranged in the gap between power supply box inner surface, power module surface, adjacent power supply single, in conductive line surfaces
At least one place.
Wherein power supply single surface coated power-supply system covering material, is coated on the surrounding of power supply single and upper and lower two
Face, forms comprehensive parcel, is allowed to be in close contact with power supply single guarantee that temperature can be timely transmitted to have resolution characteristic
Material.
Described decomposition gas detector, volatilization gas detector, the data collection strategy of flame detector and related algorithm are integrated
Inside BMS, so it is easy to being uniformly controlled and control strategy of power-supply system.The alarm signal of alarm device is at vehicular meter
Dish and long distance control system show and report to the police.
The power-supply system of the present invention is by the detection to gas composition concentration, it is achieved that power supply single, power module and power supply system
The prejudging and giving warning in advance of safe condition of system, and feed back in time at meter panel of motor vehicle and long distance control system and alert,
Achieve power-supply system and car load are run and carry out timely anticipation and tracking safely.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the power-supply system of the present invention；
Fig. 2 is the structural representation of the power-supply system covering material in the embodiment of the power-supply system of the present invention；
Fig. 3 is that power-supply system covering material is to the surface coated schematic diagram of power supply single；
Fig. 4 is the structural representation that Surface coating has the power supply single of power-supply system covering material；
Fig. 5 is the structural representation of the set of cells being made up of the power supply single of power-supply system covering material multiple Surface coating
Figure；
Fig. 6 is the structural representation of another kind of set of cells；
Fig. 7 is the structural representation of another kind of set of cells.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is further detailed.
Embodiment 1
The thermal cracking material of the present embodiment is made up of the component of following percentage by weight: the inorganic foaming agent sodium bicarbonate of 10%
(NaHCO3), the organic foaming agent azodicarbonamide (AC) of 60%, 20% organic foaming agent to aoxidize two benzene sulfonyl hydrazides (OT),
The auxiliary agent zinc oxide (ZnO) of 10%.Thermal cracking material in the present embodiment can decompose to give off decomposition gas when 100 DEG C ± 5 DEG C
Body, the decomposition gas that this thermal cracking material discharges in this temperature range be mainly composed of CO2、N2Deng gas.
The power-supply system covering material of the present embodiment includes base material 201 and the above-mentioned thermal cracking material 202 being attached on base material
(as shown in Figure 2), base material is PP.Attachment is adopted with the following method: use porous substrate, the surface of this base material and internal tool
There is large number of orifices structure, by above-mentioned thermal cracking material mix homogeneously, be filled in the pore structure within porous substrate, concora crush, i.e.
?.The gross thickness of the power-supply system covering material obtained is 5mm.
Embodiment 2
The thermal cracking material of the present embodiment is made up of the component of following percentage by weight: the inorganic foaming agent sodium bicarbonate of 80%
(NaHCO3), the organic foaming agent azodicarbonamide (AC) of 10%, 5% organic foaming agent to aoxidize two benzene sulfonyl hydrazides (OT),
The auxiliary agent zinc oxide (ZnO) of 5%.Thermal cracking material in the present embodiment can decompose to give off decomposition gas when 130 DEG C ± 5 DEG C,
The decomposition gas that this thermal cracking material discharges in this temperature range be mainly composed of CO2、N2Deng gas.
The power-supply system covering material of the present embodiment includes base material and the above-mentioned thermal cracking material being attached on base material, and base material is
PP.Attachment is adopted with the following method: using porous substrate, the surface of this base material and inside have large number of orifices structure, by above-mentioned heat
Decomposing material mix homogeneously, is filled in the pore structure within porous substrate, concora crush, to obtain final product.The power-supply system bag obtained
The gross thickness covering material is 5mm.
Embodiment 3
The thermal cracking material of the present embodiment is made up of the component of following percentage by weight: the inorganic foaming agent sodium bicarbonate of 5%
(NaHCO3), the organic foaming agent azodicarbonamide (AC) of 10%, 55% organic foaming agent to aoxidize two benzene sulfonyl hydrazides (OT),
The auxiliary agent zinc oxide (ZnO) of 30%.Thermal cracking material in the present embodiment can decompose to give off decomposition gas when 140 DEG C ± 5 DEG C
Body, the decomposition gas that this thermal cracking material discharges in this temperature range be mainly composed of CO2、N2Deng gas.
The power-supply system covering material of the present embodiment includes base material and the above-mentioned thermal cracking material being attached on base material, and base material is
PP.Attachment is adopted with the following method: using porous substrate, the surface of this base material and inside have large number of orifices structure, by above-mentioned heat
Decomposing material mix homogeneously, is filled in the pore structure within porous substrate, concora crush, to obtain final product.The power-supply system bag obtained
The gross thickness covering material is 5mm.
Embodiment 4
The thermal cracking material of the present embodiment is made up of the component of following percentage by weight: the inorganic foaming agent sodium bicarbonate of 10%
(NaHCO3), the organic foaming agent azodicarbonamide (AC) of 60%, 30% organic foaming agent to aoxidizing two benzene sulfonyl hydrazides (OT).
Thermal cracking material in the present embodiment can decompose to give off decomposition gas when 120 DEG C ± 5 DEG C, and this thermal cracking material is in this temperature
In the range of discharge decomposition gas be mainly composed of CO2、N2Deng gas.
The power-supply system covering material of the present embodiment includes base material and the above-mentioned thermal cracking material being attached on base material, and base material is
PP.Attachment is adopted with the following method: using porous substrate, the surface of this base material and inside have large number of orifices structure, by above-mentioned heat
Decomposing material mix homogeneously, is filled in the pore structure within porous substrate, concora crush, to obtain final product.The power-supply system bag obtained
The gross thickness covering material is 5mm.
Embodiment 5
The thermal cracking material of the present embodiment is made up of the component of following percentage by weight: organic foaming agent azo two formyl of 60%
Amine (AC), 40% organic foaming agent to aoxidizing two benzene sulfonyl hydrazides (OT).Thermal cracking material in the present embodiment 130 DEG C ±
Decomposition gas can be decomposed to give off, the main one-tenth of the decomposition gas that this thermal cracking material discharges in this temperature range when 5 DEG C
It is divided into CO2、N2Deng gas.
The power-supply system covering material of the present embodiment includes base material and the above-mentioned thermal cracking material being attached on base material, and base material is
PP.Attachment is adopted with the following method: using porous substrate, the surface of this base material and inside have large number of orifices structure, by above-mentioned heat
Decomposing material mix homogeneously, is filled in the pore structure within porous substrate, concora crush, to obtain final product.The power-supply system bag obtained
The gross thickness covering material is 5mm.
Embodiment 6
The thermal cracking material of the present embodiment is sodium bicarbonate.The power-supply system covering material of the present embodiment includes base material and attachment
At the above-mentioned thermal cracking material of substrate surface, base material is PP.Adhere in the following way: by above-mentioned thermal cracking material, PTFE
Or PVDF mix homogeneously, is coated in substrate surface, concora crush, to setting thickness 5mm, to obtain final product.
Embodiment 7
As Figure 1-5, the power-supply system of the present invention includes power supply box and the power module being arranged in power supply box and battery
Management system (BMS), power module is formed by connecting by connection in series-parallel by power supply single 101, and power supply single can be battery
Or super capacitor, power supply single profile can be cylinder, square or Soft Roll, and battery can be nickel system battery, plumbic acid electricity
Pond, lithium ion battery, be rectangular lithium ion battery in the present embodiment.
Between power supply box inwall, power supply single surface and adjacent two power supply singles 101, conductive connecting surface is provided with
Power-supply system covering material, in the present embodiment, power supply box inwall, rectangular lithium ion battery surface, conductive connecting surface
The most closely it is coated with power-supply system covering material, is wherein the most closely coated with power-supply system on six faces of rectangular lithium ion battery
By covering material, only both positive and negative polarity pole exposes, and forms the power supply single 301 (as shown in Figure 4) after cladding；In order to make electricity
Origin system covering material fits tightly with battery surface, beneficially conduction of heat, and power-supply system covering material is glued by adhesive sticker
Knot is at battery surface；Both positive and negative polarity pole carries out in series or in parallel being combined into by conductive connecting and meets assigned voltage, capacity
Power module.High-voltage line is formed after the conductive connecting drawn respectively from power supply single Positive Poles and negative pole pole is aggregated
Bundle 102, draws total positive pole 104 and total negative pole 105 in high-voltage wiring harness, total respectively at be arranged on power supply box panel outer wall
Plus end 106 and total negative terminal 107 connect, in order to export electric current to outside.
The power-supply system of the present embodiment covering material uses the power-supply system covering material of embodiment 1, the heat of the present embodiment
Decomposing material uses the thermal cracking material of embodiment 1.The thickness of power-supply system covering material is not more than 5mm, the most excellent
Electing no more than 2mm as, the thickness of the power-supply system covering material in the present embodiment is 2mm.Base material and thermal cracking material are equal
All having good heat conductivity and insulating properties, heat conductivity ensures the quick transmission of heat, and insulating properties prevent the first device in power supply box
Being short-circuited between part, the insulation resistance of base material and thermal cracking material should be greater than 500 Ω/V.
In power supply box, between power module and power supply box panel, leave installing space, in this installing space, detector is installed
Box 109, battery management system BMS control box 108 and fire extinguisher 110, be provided with in box detector decomposition gas detector,
Volatilization gas detector, photoelectric sensor, wherein, the thermal cracking material that decomposition gas detector is used for detecting in power supply box exists
Be heated the decomposition gas decomposed to give off when heating up, and decomposition gas detector is CO, CO2Gas detector, N2Gas sensor；
Volatilization gas detector is used for detecting the gas that the electrolyte volatilization of lithium ion battery leakage produces, and volatilization gas detector is for having
Machine solvent gas detection probe；The naked light signals such as the electric spark that flame detector occurs in being used for detecting power supply box；Decomposition gas
The signal each detected is passed at battery management system by detector, volatilization gas detector and flame detector respectively
BMS controls alarm device integrally disposed in box, and when each signal detected exceedes setting value, alarm device is on BMS
Display alarm signal on the machine of position.Wherein, the arranging according to power supply of the alarming value of the gas signal that decomposition gas detector detects
Temperature in case and the relation between gas concentration value are set as different grades, can first gather the temperature in power supply box and certain
Plant the concentration signal of gas, and by the two one_to_one corresponding, if needing to set the temperature worked as in power supply box to be higher than certain value such as 130 DEG C
Alarm, the most only need to arrange the concentration value of a certain gas that decomposition gas detector detects more than 130 DEG C of corresponding concentration letters
Number value is reported to the police.
The most integrally disposed in battery management system BMS control box have control device, this control device and flame detector and fire extinguishing
Device is connected, and when the naked light signal that flame detector detects reaches a certain setting value, controls device and starts fire extinguisher to power supply
Putting out a fire in case, the time that fire extinguisher runs can be previously set, as being set to after fire extinguishing device jet terminates, more than 30 points
Resume combustion is occurred without in the time of clock.The present invention is by decomposition gas detector, volatilization gas detector, the collection of flame detector
Control circuit integrates with BMS, it is simple to being uniformly controlled of power-supply system, it is achieved the security control plan of whole power-supply system
Slightly.
Power supply box includes casing and lid, is provided with sealing strip 103 in order to casing and lid to be entered between described casing and lid
Row seals, and power box body is additionally provided with fixing foot 111, is used for being fixed in the electrical equipments such as vehicle power supply box.
Thermal cracking material point in use, is first coated on base material by the power-supply system of above-described embodiment, makes power-supply system bag
Cover material, power-supply system covering material is closely coated on six faces of rectangular lithium ion battery, only positive and negative by battery
Pole is exposed, and forms set of cells, as it is shown in figure 5, then multiple set of cells coupled together by fixing side by side for multiple battery cells
Form battery module；Multiple power supply singles can also be prevented together side by side, form set of cells, then that set of cells is peripheral
Wrap up one layer of covering material, such as Fig. 7；Use conductive connecting by the connection in series-parallel according to design at the positive pole of each battery, negative pole
Scheme is attached, and forms high-voltage wiring harness, and the voltage of each battery, current acquisition line is connected with BMS, is formed low
Line ball bundle；Using high-voltage wiring harness to connect between set of cells, the high-voltage wiring harness in the set of cells at two ends draws total positive pole respectively with total
Negative pole, and be connected with total plus end and total negative terminal of power supply box front panel.Power supply box inwall and high-voltage wiring harness, low voltage wiring harness
Surface is all coated with power source system covering material.By decomposition gas detector, volatilization gas detector, flame detector with
Alarm device, control device connect, and are connected with controlling device by fire extinguisher, i.e. complete the assembling of power-supply system.When power supply system
After system any one spot temperature internal is increased to certain limit, the thermal cracking material of corresponding site will decompose and discharge
Going out decomposition gas, the gas detector that is decomposed detects, and when the concentration of this decomposition gas reaches certain value, alarm device connects
The signal of the decomposition gas detector transmission received exceedes setting value, and alarm device is reported to the police, and BMS host computer shows report
Alert signal.When there being electrolyte to leak in power supply box, the gas evaporated is detected by volatilization gas detector, and will letter
Number passing to alarm device reports to the police.When occurring naked light in power supply box, signal is passed to control system by flame detector,
Control system controls fire extinguisher and is actuated for fire extinguishing.
After power-supply system has been assembled, use following test that power-supply system is detected:
1) inside power-supply system, place heating plate simulated battery to heat up, and the heating plate in power-supply system arranges temperature for it
Degree sensing point gathers the temperature information of this point by temperature sensor；By the host computer of BMS, different temperature grade is set,
Such as 130 DEG C is alarm temperature, then carries out heat temperature raising by the heating plate within power-supply system, observes BMS host computer
Warning information.
In process of the test, when the temperature data that temperature sensor collects rises to 130 DEG C ± 5 DEG C time, BMS host computer
Can accurately show that the alarm prompt of the alarm device being connected with decomposition gas detector, the i.e. present invention can be visited timely and accurately
Measure the variations in temperature of the internal any point of power-supply system, can alert in time when beyond power-supply system security control threshold values time,
Make operator understand the safe condition within the power box of power-supply system in time, confirm the peace that power-supply system and vehicle run
Full situation.
2) inside power supply box, place the lithium-ion battery electrolytes of a certain amount of electrolyte, such as from about 0.2mL.
Result shows, can show the alarm that volatilization gas detector sends when detecting organic volatile on BMS host computer
Signal.As can be seen here, the power-supply system of the present invention can detect the internal any power supply single list of power-supply system timely and accurately
Unit's leakage situation in abnormal cases, makes operator understand the safe condition of power-supply system box house in time, confirms electricity
The security situation that origin system and vehicle run.
3) placing sparker inside power supply box, analog power internal system due to electric connector or electrically connects
Connect position to loosen, contact internal resistance increase and cause " direct current arc fault ", produce electric spark.
In whole experimentation, producing electric spark by sparker, BMS host computer can the letter of display alarm in time
Breath early warning in time, make operator understand the safe condition of power-supply system box house in time, confirm power-supply system and vehicle
The security situation run.
Embodiment 8-12 uses the power-supply system covering material in embodiment 2-6 respectively, other all with in embodiment 7
Identical.
Embodiment 13
As shown in Figure 6, the present embodiment is with the difference of embodiment 7, the power-supply system covering material of the present embodiment
It is provided only on power supply box inwall and cell surface, is not arranged in conductive connecting surface.
Embodiment 14
The present embodiment is with the difference of embodiment 7, and the power-supply system covering material on cell surface is provided only on
In the adjacent gap between cell, place N-1 sheet power-supply system covering material between the most N number of cell, so
After cell outer surface at two ends also place power-supply system covering material, the most altogether place N+1 sheet power-supply system and use
Covering material.
Embodiment 15
The present embodiment is with the difference of embodiment 7, is not provided with fire extinguisher, only by flame detector and report in power supply box
Naked light in power supply box is reported to the police by alarm device.
Embodiment 16
The present embodiment is with the difference of embodiment 7, is not provided with volatilization gas detector in power supply box.
Embodiment 17
The present embodiment is with the difference of embodiment 7, is not provided with flame detector in power supply box.
Embodiment 18
The present embodiment is with the difference of embodiment 7, and in power supply box, volatilization gas detector and flame detector are the most not
Arranging, only arrange decomposition gas detector, the monitoring of electrolyte leakage and electric spark is carried out by other devices.
Claims (10)
1. a thermal cracking material, it is characterised in that include the component of following percentage by weight: inorganic foaming agent 0-100%,
Organic foaming agent 0-100%, auxiliary agent 0-30%；Described inorganic foaming agent is sodium bicarbonate, sodium carbonate, ammonium hydrogen carbonate, carbonic acid
One or several in ammonium；Described organic foaming agent is azodicarbonamide and/or sulfonyl hydrazines compound.
2. thermal cracking material as claimed in claim 1, it is characterised in that include the component of following percentage by weight: inorganic
Foaming agent 5%-95%, organic foaming agent 5%-95%, auxiliary agent 5%-30%.
3. thermal cracking material as claimed in claim 1 or 2, it is characterised in that also include auxiliary agent, described auxiliary agent is oxidation
Zinc and/or organic zinc compound.
4. thermal cracking material as claimed in claim 1 or 2, it is characterised in that described sulfonyl hydrazines compound is to oxidation
Two benzene sulfonyl hydrazides or 4,4 '-OBSH.
5. a power-supply system covering material, it is characterised in that include base material and be attached on base material such as claim 1
Or the thermal cracking material described in 2.
6. power-supply system covering material as claimed in claim 5, it is characterised in that described thermal cracking material is coated in institute
State substrate surface；Or described base material is porous substrate, described thermal cracking material is attached in the hole of porous substrate.
7. power-supply system covering material as claimed in claim 5, it is characterised in that described power-supply system covering material
Thickness less than 10mm.
8. a power-supply system, including power supply box, it is characterised in that be provided with in described power supply box as claimed in claim 5
Power-supply system covering material and be used for power-supply system covering material decomposes release decomposition gas examine
The decomposition gas detector surveyed, described power-supply system also includes the alarm device being connected with described decomposition gas detector.
9. power-supply system as claimed in claim 8, it is characterised in that be provided with power module, institute in described power-supply system
State power module include power supply single, described power-supply system covering material be arranged on power supply box inner surface, power module surface,
At least one place in the adjacent gap between power supply single, in conductive line surfaces.
10. power-supply system as claimed in claim 8, it is characterised in that be provided with for detecting power supply in described power supply box
The volatilization gas detector of case electrolyte inside volatilization gas and be used for detecting the flame detector of the spark in power supply box, described in wave
Get angry bulk detector and described flame detector is all connected with described alarm device, in described power supply box, be provided with fire extinguisher, institute
Stating the control device that power-supply system also includes being connected with described alarm device, described fire extinguisher is connected with described control device.
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| CN201610077762.0A CN105733339A (en) | 2016-02-03 | 2016-02-03 | Thermal decomposition material, clad material for power system and power system |
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| CN1813025A (en) * | 2003-06-27 | 2006-08-02 | 三井化学株式会社 | Resin composition for foam and use thereof |
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Application publication date: 20160706 |