CN105762432A - Detection method and device for eruptive burst state of battery module - Google Patents

Detection method and device for eruptive burst state of battery module Download PDF

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Publication number
CN105762432A
CN105762432A CN201610272305.7A CN201610272305A CN105762432A CN 105762432 A CN105762432 A CN 105762432A CN 201610272305 A CN201610272305 A CN 201610272305A CN 105762432 A CN105762432 A CN 105762432A
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Prior art keywords
voltage
battery modules
temperature
status
cell
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CN201610272305.7A
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CN105762432B (en
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苏俊松
劳力
袁承超
李树民
周鹏
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Sinoev Hefei Technologies Co Ltd
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Sinoev Hefei Technologies Co Ltd
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The invention provides a detection method and device for the eruptive burst state of a battery module and aims to solve the technical problem that it's too late to take escape measures when a driver finds an eruptive burst danger situation of the battery module due to the fact that early warning cannot be detected timely when eruptive burst occurs to a certain single cell of the battery module in the prior art.According to the detection method and device for the eruptive burst state of the battery module, state data, of each single cell in the battery module, collected by a state acquisition module are received by a signal transceiver, the operation state of the battery module is obtained according to the state data of each single cell, and an abnormal state instruction is sent to a battery management system when the operation state of the battery module is abnormal, so that the battery management system can be alarmed.According to the detection method and device for the eruptive burst state of the battery module, an alarm is given out timely when the state data of a certain single cell of the battery module are detected to be abnormal so that the driver can take the safety measures such as escaping timely.

Description

The detection method of the quick-fried spray state of a kind of battery modules and device
Technical field
The present invention relates to electrokinetic cell security fields, in particular to detection method and the device of the quick-fried spray state of a kind of battery modules.
Background technology
In recent years, owing to the problem of energy cost and environmental pollution is more and more prominent, pure electric automobile and hybrid vehicle can significantly eliminate the advantage of even zero-emission vehicle tail gas with it, are subject to government and the attention of each Automobile Enterprises.One of key technology of new-energy automobile is electrokinetic cell, and the quality of battery decides the cost of electric automobile on the one hand, decides the distance travelled of electric automobile on the other hand.In current environment, the distance travelled of automobile depends primarily on the capacity of battery, but the security performance that the unfavorable factor brought of the capacity increasing battery is battery is substantially reduced.Because the increase of capacity, the safety determining battery is greatly affected.
The topmost danger of electrokinetic cell is exactly the explosion of battery.For 18650 cylindrical batteries, there is special pressure relief opening in its design, it is simply that explosion-proof valve.When extreme use environment and use, first the explosion-proof valve of battery all can be washed open by the high temperature and high pressure gas in battery with pressure release, and the high temperature and high pressure gas gone out very easily ignites in atmosphere, so that around battery core produces chain explosion.If battery has the abnormal conditions such as short circuit to occur at work, substantial amounts of heat will be produced in short time, this heat can make the temperature of battery steeply rise, the high temperature and high pressure gas causing inside battery breaks through explosion-proof valve, the exposed air burning of electrolyte inside, and metal shell fragment overlap joint closes on battery, make the battery short circuit on side, formed vicious cycle, finally can large-area detonation, bring sizable life danger to driver.
Summary of the invention
The invention provides the detection method of the quick-fried spray state of a kind of battery modules and device, it is intended to improve the problems referred to above.
The detection method of the quick-fried spray state of a kind of battery modules provided by the invention, described method includes: detecting device receives the status data of each cell in battery modules;Described status data according to each described cell received draws the running status of described battery modules;Report to the police when described running status is abnormality.
Preferably, described status data is voltage status, described voltage status includes normality voltage and reversal voltage, described state acquisition node includes the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first wires and described signal transceiver are connected into series voltage and measure loop, the described described status data according to each described cell received draws the running status of described battery modules, specifically include: described signal transceiver show that when the voltage that described series voltage measures loop is described normality voltage the described running status of described battery modules is normal condition, show that the described running status of described battery modules is abnormality when the voltage that described series voltage measures loop is reversal voltage.
nullPreferably,Described status data is voltage status,Described voltage status includes normality voltage and reversal voltage,Described state acquisition node includes the first wire being arranged at the explosion-proof valve of described cell,First wire described in when quick-fried spray occurs described cell disconnects,Multiple described first wires are all connected to the two ends of described signal transceiver,The described described status data according to each described cell received draws the running status of described battery modules,Specifically include: described signal transceiver show that when receiving the described voltage status of port voltage of multiple described first wire and being normality voltage the described running status of described battery modules is normal condition,The described voltage status of the port voltage of at least one described first wire in receiving multiple described first wire show when being reversal voltage that the described running status of described battery modules is described abnormality.
Preferably, described status data is state of temperature, described state of temperature includes normal temperature and quick-fried spray temperature, described state acquisition node includes the temperature sensor being arranged at the explosion-proof valve of described cell, multiple described temperature sensors are all connected with described signal transceiver, the described described status data according to each described cell received draws the running status of described battery modules, specifically include: described signal transceiver show that when the described state of temperature of multiple described temperature sensor collections is normality temperature the described running status of described battery modules is normal condition, the described state of temperature of at least one the described temperature sensor collection in multiple described temperature sensors show when being quick-fried spray temperature that the described running status of described battery modules is described abnormality.
The detecting device of the quick-fried spray state of a kind of battery modules provided by the invention, battery modules includes multiple cell, and described device includes state acquisition module, signal transceiver and battery management system;
Described state acquisition module, for gathering the status data of each described cell in described battery modules, sends described status data to described signal transceiver;
Described signal transceiver, for drawing the running status of described battery modules according to the described status data of each described cell received, sends abnormality instruction extremely described battery management system when described running status is abnormal;
Described battery management system, reports to the police for the described abnormality instruction sent according to described signal transceiver.
Preferably, described state acquisition module includes multiple state acquisition node, and each described state acquisition node is for gathering the described status data of a cell, and multiple described state acquisition nodes are all connected with described signal transceiver.
Preferably, described status data is voltage status, described voltage status includes normality voltage and reversal voltage, described state acquisition node includes the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first wires and described signal transceiver are connected into series voltage and measure loop, described signal transceiver is normal condition specifically for measuring the running status drawing described battery modules when the voltage in loop is normality voltage in described series voltage, the described running status drawing described battery modules when the voltage of described tension measuring circuit is reversal voltage is abnormality.
Preferably, also including wire clamping plate and lead thread fixing plate, described wire clamping plate are clamped on described first wire, described in lead thread fixing plate by the described wire Boards wall explosion-proof valve at described cell.
Preferably, the fusing-off temperature of described first wire is more than or equal to 80 DEG C.
Preferably, described status data is state of temperature, described state of temperature includes normality temperature and quick-fried spray temperature, described state acquisition node includes the temperature sensor being arranged at the explosion-proof valve of described cell, multiple described temperature sensors are all connected with described signal transceiver, described signal transceiver is normal condition specifically for drawing the described running status of described battery modules when the described state of temperature of multiple described temperature sensor collections is normality temperature, the described status data of at least one the described temperature sensor collection in multiple described temperature sensors show when being quick-fried spray temperature that the described running status of described battery modules is abnormality.
The detection method of the quick-fried spray state of battery provided by the invention and device, it is directed to the battery modules of prior art can not detect early warning when quick-fried spray occurs a certain cell in time and cause that driver has little time to take the technical problem of escape measure when finding the unsafe condition of the quick-fried spray of battery modules, by receiving the status data of each cell in battery modules, described status data according to each described cell draws the running status of described battery modules, reports to the police when the running status of described battery modules is abnormality.This method achieves when the status data of certain cell of battery modules being detected for exception and alarm, so that driver takes the technique effect of the risk avoidance measures such as escape in time.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, it is to be understood that, the following drawings illustrate only certain embodiments of the present invention, therefore the restriction to scope it is not construed as, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
The module frame chart of the quick-fried spray condition checkout gear of the battery modules that Fig. 1 provides for the embodiment of the present invention 1;
The structural representation of the quick-fried spray condition checkout gear of the battery modules that Fig. 2 provides for the embodiment of the present invention 1;
The structural representation of the quick-fried spray condition checkout gear of the battery modules that Fig. 3 provides for the embodiment of the present invention 1;
The structural representation of the detecting device of the quick-fried spray state of the battery modules that Fig. 4 provides for the embodiment of the present invention 2;
The structural representation of the detecting device of the quick-fried spray state of the battery modules that Fig. 5 provides for the embodiment of the present invention 2;
The flow chart of steps of the detection method of the quick-fried spray state of the battery modules that Fig. 6 provides for the embodiment of the present invention 4.
Detailed description of the invention
Those skilled in the art are seeking a kind of device improving this problem or method for a long time always.
In view of existing detecting device can only detect the parameter that battery modules is overall, can only detecting exception when quick-fried spray on a large scale occurs battery modules, now driver has had little time to take risk avoidance measures.And test for several times and can draw, but on fire from first quick-fried spray of battery core is poor if having time in the middle of second quick-fried spray, second is ignited the 3rd is also have a time difference, the like, but the change of this time difference is more and more less, finally can large-area detonation, finally can large-area detonation, that is power vehicle battery is sprayed onto the burning of whole battery bag and has the buffer time of 3-5 minute first battery is quick-fried, if therefore timely warning reminding driver parking can leave when quick-fried spray occurs first battery, just can reduce to a certain extent because battery is quick-fried sprays the accident caused.In consideration of it, the designer of the present invention is by long-term exploration and trial, and experiment repeatedly and effort, constantly reform and innovation draw detection method and the device of the quick-fried spray state of preferably battery modules shown in this programme.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.Therefore, below the detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit claimed the scope of the present invention, but is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
Referring to Fig. 1 to Fig. 3, the detecting device of the quick-fried spray state of a kind of battery modules that the embodiment of the present invention provides, for detecting the quick-fried spray state of battery modules.Battery modules includes multiple cell, the detecting device of the present embodiment can detect the state of each cell in battery modules, can report to the police when quick-fried spray occurs certain cell, remind the battery of driver vehicle that quick-fried spray occurs, in order to driver takes the risk avoidance measures such as escape in time.
Referring to Fig. 1, for the module frame chart of detecting device of the quick-fried spray state of battery modules that the present embodiment provides, described device includes state acquisition module 102, signal transceiver 104 and battery management system 106.Described status data, for gathering the status data of each described cell in described battery modules, is sent to described signal transceiver 104 by described state acquisition module 102.Described signal transceiver 104 for drawing the running status of described battery modules according to the described status data of each described cell received, sending abnormality instruction when described running status is abnormal to described battery management system 106, described battery management system 106 is reported to the police for the described abnormality instruction sent according to described signal transceiver 104.
Refer to Fig. 2 and Fig. 3, for the structural representation of the detecting device that the present embodiment provides.Wherein, described state acquisition module 202, it is arranged on electrokinetic cell, for gathering the status data of each cell 201 in battery modules 200, and described status data is sent to described signal transceiver 204.The structure of described state acquisition module 202 can have multiple, and described status data can be multiple according to the structure difference of described state acquisition module 202, for instance the status datas such as state of temperature, voltage status, current status.Described state acquisition module can include multiple state acquisition node 203, and each described state acquisition node 203 may be used for gathering the described status data of a cell 201.Multiple described status datas are all connected with described signal transceiver 204, so that described signal transceiver can receive the status data of multiple described cell.Described signal transceiver 204 is connected with described battery management system 206, sends the quick-fried spray state of the battery modules obtained to described battery management system 206, so that described battery management system 206 is reported to the police.
Described acquisition node can be the state data acquisition device of the explosion-proof valve being wrapped on cell or being fixed on cell, for instance voltage status harvester or temperature state acquisition device etc..Owing to cell is when quick-fried spray, producing substantial amounts of heat in the short time, this heat can make the temperature of battery steeply rise, and causes that the high temperature and high pressure gas within cell breaks through explosion-proof valve.It is preferred to described state acquisition node to be arranged on the explosion-proof valve of cell, it is possible to the sensitiveer quick-fried spray state being more timely detected cell.
Described state acquisition node can be the wire of the explosion-proof valve distance above being fixed on cell, and normal condition lower wire can be conducting state.When quick-fried spray occurs cell, the high temperature and high pressure gas in cell breaks through explosion-proof valve, and fusing is arranged at the wire above battery anti-explosion valve, and wire disconnects, then described signal transceiver receives voltage or current signal can change.According to the change of the voltage signal received, described signal transceiver judges that the running status of described battery modules is as normal condition or abnormality.
Described state acquisition node can also be temperature sensor, and described temperature sensor can be preferably provided on the explosion-proof valve of cell.Multiple described temperature sensors are all connected with described signal transceiver, and described signal transceiver can receive the temperature data that the temperature sensor above multiple cell explosion-proof valve sends.Described signal transceiver can judge when the state of temperature that multiple temperature sensors send is normality temperature that the running status of described battery modules is normal condition, and the state of temperature of at least one transmission in multiple temperature sensors judges when being quick-fried spray temperature that the running status of described battery modules is abnormality.According to above-mentioned or similar state decision procedure, it is possible to the running status judging described battery modules timely and accurately is normal condition or abnormality.
Described signal transceiver can be processor, or PLC logic controller, or the hardware unit such as logic control circuit.Can editing in hardware at processor, PLC logic controller or logic control circuit etc. and fire or editor control program, or carry out circuit design etc., the signal to realize the signal transceiver required for this programme receives, processes and transmission effect.
Described battery management system 306, is namely BMS (BatteryManagementSystem), is the tie between battery modules 300 and user, and main object is secondary cell.There are some following shortcomings in secondary cell, as short in storage little energy, the life-span, connection in series-parallel uses problem, safety in utilization, battery electric quantity estimation difficulty etc..The performance of battery is very complicated, and different types of battery behavior also differs greatly.Battery management system (BMS) mainly aims at the utilization rate that can improve battery, it is prevented that overcharging and over-discharge occurs in battery, extends the service life of battery, the state of monitoring battery.
The battery management system that the present embodiment provides, for receiving the described state acquisition module 302 abnormality instruction that described signal transceiver sends, to the user of electrokinetic cell, namely vehicle, carry out operation of reporting to the police.Wherein, the mode of warning can be at least one of sound and light alarm and risk avoidance measures.Wherein, risk avoidance measures can be Braking mode vehicle, electrokinetic cell cooling or automatic spring driver etc..Driver can also take to escape accordingly measure according to the warning of battery management system when driving vehicle.Extinguish vehicle, to battery fast cooling etc..The time difference being sprayed onto the overall quick-fried spray on a large scale of battery modules owing to first battery of battery modules is quick-fried is 3-5 minute, the quick-fried spray of first cell receiving the transmission of described signal transceiver at described battery management system indicates to the interval of the overall quick-fried spray of battery modules, driver is enough to make corresponding escape measure, largely decreases the generation of the accident caused due to the quick-fried spray of battery modules.
Certainly, described signal transceiver and described battery management system can also be integrated in processor.Described processor can after the status data receiving each cell that described state acquisition module sends, complete the operations such as signal reception, running status judgement and exceptional state alarm, further reduce signal currency and software and hardware setting, reduce cost, improve battery modules quick-fried spray state-detection early warning efficiency.
Embodiment 2
Refer to Fig. 4 and Fig. 5, the quick-fried spray condition checkout gear of battery modules that the present embodiment provides, its basic structure is identical with previous embodiment with principle, for being briefly described, the not mentioned part of the present embodiment part, it is referred in previous embodiment corresponding contents.
Consider cell quick-fried spray time, first internal high temperature high pressure gas cognition go out explosion-proof valve, low melting point device in close range above high temperature and high pressure gas meeting instant melting or fusing explosion-proof valve, it is possible to select described low melting point device as the state acquisition node of cell state data acquisition.In order to make described low melting point device can feed back, when fusing, the blown state being different from normal condition, described state acquisition node can be preferably the first wire.
The normal working temperature of described battery is about 60 DEG C, and quick-fried spray high temperature can up to 600 DEG C-1000 DEG C.In order to detect quick-fried spray state comparatively delicately, described state acquisition node is the first wire, and the fusing-off temperature of described first wire can be more than or equal to 80 DEG C.Described first wire can be short lead, and the material of described short lead can include aluminum, copper etc., it is preferable that the wire that the sectional area of described short lead is thinner.Multiple described first wires are all connected with described signal transceiver, and described signal transceiver can receive the port voltage of described first wire, judge the running status of described battery modules with the conducting state according to described first wire.
When preferred described state acquisition node is be arranged at the first wire above cell explosion-proof valve, the described status data that described state acquisition node gathers can be voltage status, and described voltage status can include normality voltage and reversal voltage.So-called normality voltage, is the voltage status that during normal battery operation, described signal transceiver receives.Described reversal voltage, be namely cell carry out quick-fried spray time, cell internal high temperature gases at high pressure break through explosion-proof valve fusing explosion-proof valve above the first wire, cause first wire disconnect time, the port voltage that described signal transceiver gathers.
Multiple described first wires are all connected with described signal transceiver, so that described signal transceiver can receive the port voltage of each described first wire.The mode that described first wire is connected with described signal transceiver can have multiple, multiple described first wires and described signal transceiver can be connected into voltage measurement circuit, or each described first conductor in parallel is connected to a logic circuit, the outfan of logic circuit is connected to signal transceiver.Can also by multiple described first conductor in parallel to the different port of described signal transceiver, by described signal transceiver according to end electric current decision circuitry state.Or in described signal transceiver integrated or circuit, judge whether multiple cell is normal operating conditions according to the conducting state of multiple described first wires, and then judge whether the running status of described battery modules is abnormality.Wherein, logic circuit can be realize the "or" selection circuit of "or" logic function, anticoincidence circuit, or the Hybrid logic circuit of multiple logic circuit composition.
Sensitivity requirement when considering the quick-fried spray state-detection of battery modules 400 and low cost demand, preferably with described signal transceiver 404, first wire 403 of the described state acquisition module 402 arranged on cell 401 explosion-proof valve being connected into voltage measurement circuit, described signal transceiver 404 is connected with described battery management system 406.Described voltage measurement circuit can include the devices such as multiple first wire 403, signal transceiver and resistance, is connected to the two ends of described signal transceiver 404 after multiple first wire 403 series connection.Certainly, the connection wire of multiple described first wires 403 and multiple described first wires 403 of connection can be integrated into an overall long wire, it is possible to the devices such as long wire (can include power supply etc.) are connected to signal transceiver two ends.
When multiple cell 401 equal normal operation, the first wire 403 that each cell 401 explosion-proof valve is arranged is both turned on.Whole voltage measurement circuit is conducting state, and the described signal transceiver 404 port voltage in described voltage measurement circuit is normality voltage.When there is quick-fried spray at least one in the multiple cells 401 in multiple cells 401, the first wire 403 arranged on this cell 401 explosion-proof valve is thrust by the high temperature and high pressure gas gone out in this cell 401 explosion-proof valve, described voltage measurement circuit disconnects, and described signal transceiver port voltage in described voltage measurement circuit is reversal voltage.If described voltage measurement circuit does not have phase inverter, then now described normality voltage is high voltage, and described reversal voltage is low-voltage, if being provided with phase inverter in described voltage measurement circuit, then now described normality voltage is low-voltage, and described reversal voltage is high voltage.
Certainly, multiple described first wire 503 of described state acquisition module 502 can also be connected in parallel to described signal transceiver 504, and parallel connection realizes the mode of state acquisition can be had multiple.Multiple described first wires 503 directly can be parallel to described signal transceiver 504, described signal transceiver 504 connects described battery management system 506, each first wire 503 and attached device (such as resistance etc.) thereof form a single Zhi Huilu, multiple single Zhi Huilu are all connected to the two ends of described signal transceiver, during due to multiple single Zhi Huilu parallel connection, port voltage is almost constant, therefore can preferred described signal transceiver receiving port current signal.If at least one of which list Zhi Huilu causes first wire break of this list Zhi Huilu because of the quick-fried spray in cell 501 pond, port current that described signal transceiver receives reduces, and described signal transceiver can judge that the running status of described battery modules 500 is as abnormality accordingly.
When the connected mode of above-mentioned multiple first conductor in parallel to described signal transceiver includes or during door, single Zhi Huilu of multiple described first wires and accessory circuit composition thereof is connected to described or circuit input, and described or circuit outfan is connected to the input of described signal transceiver.When the equal normal operation of multiple described cells, multiple single Zhi Huilu are conducting state (adding phase inverter, then for disconnecting, hereafter in like manner), described or circuit can export " 0 ", then described signal transceiver judges that the running status of described battery modules is normal condition.When quick-fried spray occurs at least one in multiple cells, occurring the first wire on the cell explosion-proof valve of quick-fried spray to disconnect, the list at the first wire place of this disconnection props up loop voltage reversion, then described or circuit is output as " 1 ".And then the running status that described signal transceiver may determine that described battery modules is abnormality, described signal transceiver sends abnormality instruction to described battery management system, and described battery management system is reported to the police according to the instruction of described abnormality.
Above-mentioned multiple described first wire and described signal transceiver connect in the structure of tension measuring circuit, it is also possible to include wire clamping plate 407 and lead thread fixing plate 405 (continuing with referring to Fig. 4 and Fig. 5).Described wire clamping plate 407 are clamped on described first wire, described wire clamping plate 407 are fixed in the closer distance above the explosion-proof valve of described cell 401 by described thread fixing plate 405 of leading, leading thread fixing plate 405 described in then and the first wire 403 of clamping in wire clamping plate 407 is fixed on the top of described cell explosion-proof valve simultaneously, the state data acquisition to complete cell works.
Embodiment 3
Refer to Fig. 3, for the quick-fried spray condition checkout gear of battery modules that the present embodiment provides, for being briefly described, the not mentioned part of the present embodiment part, it is referred in previous embodiment corresponding contents.
Consider cell quick-fried spray time, its main quick-fried spray shows as variations in temperature, and internal high temperature gases at high pressure go out explosion-proof valve, therefore can using temperature as detection medium.The status data of the cell that described state acquisition module gathers is state of temperature, and described state of temperature includes normality temperature and quick-fried spray temperature, and described state acquisition node can include the temperature sensor being arranged at the explosion-proof valve of described cell.Multiple described temperature sensors are all connected with described signal transceiver, and described signal transceiver receives the state of temperature that multiple described temperature sensors send, and judges according to described state of temperature whether the running status of described battery modules is normal condition.
Described signal transceiver receives the temperature data that described temperature sensor sends, temperature threshold can be set at described signal transceiver, it is set as normality temperature when the described temperature data that described temperature sensor sends is less than 80 DEG C, is set as quick-fried spray temperature when the described temperature data that described temperature sensor sends is more than or equal to 80 DEG C.Described temperature sensor judges that when the state of temperature that multiple described temperature sensors send is normality temperature the running status of described battery modules is as normal condition, and the state of temperature that at least one temperature sensor in multiple described temperature sensors sends judges when being quick-fried spray temperature that the running status of described battery modules is as abnormality.Abnormality instruction is sent in time to described battery management system, so that described battery management system is reported to the police in time when the abnormality of described battery modules being detected.
nullThe detecting device of the quick-fried spray state of battery modules that the invention described above embodiment provides,Battery modules for prior art can not detect in time when quick-fried spray occurs a certain cell and carry out early warning,Only quick-fried spray state just can be detected when quick-fried spray on a large scale occurs battery modules,Now driver has little time to gather escape risk avoidance measures,Lead to the technical problem of the miserable accident of numerous car crash,The detecting device of the quick-fried spray state of battery modules that the embodiment of the present invention provides,Including the state acquisition module for gathering the status data of cell in battery modules,For receiving the status data of multiple cell、The judgement of battery modules running status is carried out according to described status data,And the signal transceiver of abnormality instruction is sent when running status is abnormality,And the battery management system reported to the police is carried out when receiving the instruction of described abnormality,When the status data of state acquisition module collection has abnormal,Signal transceiver sends abnormality indicating reminders battery management system and alarm,Driver is reminded to take in time to extinguish vehicle、Battery is lowered the temperature、Stop and rest and reorganize、Jump the risk avoidance measures such as car escape,Largely decrease the car crash accident owing to the quick-fried spray of battery causes.
Embodiment 4
Referring to Fig. 6, the detection method of the quick-fried spray state of a kind of battery modules that the embodiment of the present invention provides, described detection method can apply to the detecting device of the quick-fried spray state of battery modules, and described method includes:
S601: detecting device receives the status data of each described cell in battery modules;
S602: draw the running status of described battery modules according to the described status data of each described cell received;
S603: report to the police when described running status is abnormality.
Described state acquisition module, is arranged on electrokinetic cell, for gathering the status data of each cell in battery modules, and sends described status data to described signal transceiver.The structure of described state acquisition module can have multiple, and described status data can be multiple according to the structure difference of described state acquisition module, for instance the status datas such as state of temperature, voltage status, current status.Described state acquisition module can include multiple state acquisition node, each described state acquisition node may be used for gathering the described status data of a cell, multiple described status datas are all connected with described signal transceiver, so that described signal transceiver can receive the status data of multiple described cell.
Described state acquisition node can be the wire of the explosion-proof valve distance above being fixed on cell, normal condition lower wire can be conducting state, when quick-fried spray occurs cell, high temperature and high pressure gas in cell breaks through explosion-proof valve, fusing is arranged at the wire above battery anti-explosion valve, then wire disconnects, voltage or current signal that then described signal transceiver receives can change, according to the change of the signal of telecommunication received, described signal transceiver judges that the running status of described battery modules is as normal condition or abnormality.
Described state acquisition node can also be temperature sensor, described temperature sensor can be preferably provided on the explosion-proof valve of cell, described temperature sensor is all connected with described signal transceiver, described signal transceiver can receive the temperature data that the temperature sensor above multiple cell explosion-proof valve sends, and judges that the running status of described battery modules is normal condition or abnormality accurately and in time.
Described signal transceiver, for receiving the status data of each described cell that described state acquisition module sends, the running status of battery modules is judged, it is also possible to send abnormality instruction extremely described battery management system when the running status of battery modules is as abnormality judging according to status data.Described signal transceiver can be existing processor, or PLC logic controller, or the hardware unit such as logic control circuit, can edit in hardware at processor, PLC logic controller or logic control circuit etc. and fire or editor control program, or carrying out circuit design etc., the signal to realize the signal transceiver required for this programme receives, processes and transmission effect.
The battery management system that the present embodiment provides, for receiving the abnormality instruction that described signal transceiver sends, to the user of electrokinetic cell, namely vehicle, report to the police.Driver's warning according to battery management system when driving vehicle, it is possible to take to extinguish vehicle, to battery fast cooling, stop and leave, jump the risk avoidance measures such as car rapidly.The time difference being sprayed onto the overall quick-fried spray on a large scale of battery modules owing to first battery of battery modules is quick-fried is 3-5 minute, the quick-fried spray of first cell receiving the transmission of described signal transceiver at described battery management system indicates to the interval of the overall quick-fried spray of battery modules, driver is enough to make corresponding risk avoidance measures, largely decreases the generation of the accident caused due to the quick-fried spray of battery modules.
Certainly, described signal transceiver and described battery management system can also be integrated in processor, described processor can after the status data receiving each cell that described state acquisition module sends, complete signal receive, running status judge and exceptional state alarm etc. operation, further reduce signal currency and software and hardware setting, reduce cost, improve battery modules quick-fried spray state-detection early warning efficiency.
Described status data can be voltage status, described voltage status includes normality voltage and reversal voltage, described detecting device includes the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first wired in series become series connection voltage measurement circuit, described detecting device show that when the voltage that described series voltage measures loop is described normality voltage the described running status of described battery modules is normal condition, show that the described running status of described battery modules is abnormality when the voltage that described series voltage measures loop is reversal voltage.
Described detecting device can include the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first conductor in parallel, the described described status data according to each described cell received draws the running status of described battery modules, specifically includes:
Described detecting device show that when receiving the described voltage status of port voltage of multiple described first wire and being normality voltage the described running status of described battery modules is normal condition, and the described voltage status of the port voltage of at least one described first wire in receiving multiple described first wire show when being reversal voltage that the described running status of described battery modules is described abnormality.
Described status data is state of temperature, described state of temperature includes normal temperature and quick-fried spray temperature, described detecting device includes the temperature sensor being arranged at the explosion-proof valve of described cell, the described described status data according to each described cell received draws the running status of described battery modules, specifically includes:
Described detecting device show that when the described state of temperature of multiple described temperature sensor collections is normality temperature the described running status of described battery modules is normal condition, and the described state of temperature of at least one the described temperature sensor collection in multiple described temperature sensors show when being quick-fried spray temperature that the described running status of described battery modules is described abnormality.
nullThe detection method of the quick-fried spray state of battery modules that the embodiment of the present invention provides,Battery modules for prior art can not detect in time when quick-fried spray occurs a certain cell and carry out early warning,Only quick-fried spray state just can be detected when quick-fried spray on a large scale occurs battery modules,Now driver has little time to gather escape risk avoidance measures,Lead to the technical problem of the miserable accident of numerous car crash,The detecting device of the quick-fried spray state of battery modules that the embodiment of the present invention provides,Including the state acquisition module for gathering the status data of cell in battery modules,For receiving the status data of multiple cell、The judgement of battery modules running status is carried out according to described status data,And the signal transceiver of abnormality instruction is sent when running status is abnormality,And the battery management system reported to the police is carried out when receiving the instruction of described abnormality,When the status data of state acquisition module collection has abnormal,Signal transceiver sends abnormality indicating reminders battery management system and alarm,Driver is reminded to take in time to extinguish vehicle、Battery is lowered the temperature、Stop and rest and reorganize、Jump the risk avoidance measures such as car escape,Largely decrease the car crash accident owing to the quick-fried spray of battery causes.The specific implementation process of the detection method of the battery modules running status that the present embodiment provides can refer to said apparatus embodiment, and this is no longer going to repeat them.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.

Claims (10)

1. the detection method of the quick-fried spray state of battery modules, it is characterised in that described method includes:
Detecting device receives the status data of each cell in battery modules;
Described status data according to each described cell received draws the running status of described battery modules;
Report to the police when described running status is abnormality.
2. method according to claim 1, it is characterized in that, described status data is voltage status, described voltage status includes normality voltage and reversal voltage, described detecting device includes the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first wired in series become series connection voltage measurement circuit, the described described status data according to each described cell received draws the running status of described battery modules, specifically includes:
Described detecting device show that when the voltage that described series voltage measures loop is described normality voltage the described running status of described battery modules is normal condition, show that when the voltage that described series voltage measures loop is reversal voltage the described running status of described battery modules is abnormality.
3. method according to claim 1, it is characterized in that, described status data is voltage status, described voltage status includes normality voltage and reversal voltage, described detecting device includes the first wire being arranged at the explosion-proof valve of described cell, and the first wire described in when quick-fried spray occurs described cell disconnects, multiple described first conductor in parallel, the described described status data according to each described cell received draws the running status of described battery modules, specifically includes:
Described detecting device show that when receiving the described voltage status of port voltage of multiple described first wire and being normality voltage the described running status of described battery modules is normal condition, and the described voltage status of the port voltage of at least one described first wire in receiving multiple described first wire show when being reversal voltage that the described running status of described battery modules is described abnormality.
4. method according to claim 1, it is characterized in that, described status data is state of temperature, described state of temperature includes normal temperature and quick-fried spray temperature, described detecting device includes the temperature sensor being arranged at the explosion-proof valve of described cell, the described described status data according to each described cell received draws the running status of described battery modules, specifically includes:
Described detecting device show that when the described state of temperature of multiple described temperature sensor collections is normality temperature the described running status of described battery modules is normal condition, and the described state of temperature of at least one the described temperature sensor collection in multiple described temperature sensors show when being quick-fried spray temperature that the described running status of described battery modules is described abnormality.
5. the detecting device of the quick-fried spray state of battery modules, it is characterised in that described battery modules includes multiple cell, and described device includes state acquisition module, signal transceiver and battery management system;
Described state acquisition module, for gathering the status data of each described cell in described battery modules, sends described status data to described signal transceiver;
Described signal transceiver, for drawing the running status of described battery modules according to the described status data of each described cell received, sends abnormality instruction extremely described battery management system when described running status is abnormal;
Described battery management system, reports to the police for the described abnormality instruction sent according to described signal transceiver.
6. device according to claim 5, it is characterized in that, described state acquisition module includes multiple state acquisition node, and each described state acquisition node is for gathering the described status data of a cell, and multiple described state acquisition nodes are all connected with described signal transceiver.
7. device according to claim 6, it is characterized in that, described status data is voltage status, described voltage status includes normality voltage and reversal voltage, described state acquisition node includes the first wire being arranged at the explosion-proof valve of described cell, first wire described in when quick-fried spray occurs described cell disconnects, multiple described first wires and described signal transceiver are connected into series voltage and measure loop, described signal transceiver is normal condition specifically for measuring the running status drawing described battery modules when the voltage in loop is normality voltage in described series voltage, the described running status drawing described battery modules when the voltage of described tension measuring circuit is reversal voltage is abnormality.
8. device according to claim 7, it is characterised in that also including wire clamping plate and lead thread fixing plate, described wire clamping plate are clamped on described first wire, described in lead thread fixing plate by the described wire Boards wall explosion-proof valve at described cell.
9. device according to claim 8, it is characterised in that the fusing-off temperature of described first wire is more than or equal to 80 DEG C.
10. device according to claim 6, it is characterized in that, described status data is state of temperature, described state of temperature includes normality temperature and quick-fried spray temperature, described state acquisition node includes the temperature sensor being arranged at the explosion-proof valve of described cell, multiple described temperature sensors are all connected with described signal transceiver, described signal transceiver is normal condition specifically for drawing the described running status of described battery modules when the described state of temperature of multiple described temperature sensor collections is normality temperature, the described status data of at least one the described temperature sensor collection in multiple described temperature sensors show when being quick-fried spray temperature that the described running status of described battery modules is abnormality.
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