CN113787915A - Overtemperature early warning and active safety control system device and control method - Google Patents
Overtemperature early warning and active safety control system device and control method Download PDFInfo
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- CN113787915A CN113787915A CN202110973534.2A CN202110973534A CN113787915A CN 113787915 A CN113787915 A CN 113787915A CN 202110973534 A CN202110973534 A CN 202110973534A CN 113787915 A CN113787915 A CN 113787915A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0053—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to fuel cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The invention provides an overtemperature early warning and active safety control system device and a control method, and the overtemperature early warning and active safety control system device comprises a power supply, a temperature control component and a contactor with a normally closed contact, wherein coils of the power supply, the temperature control component and the contactor are connected in series to form an electric loop; the normally closed contact of the contactor is arranged on an output line of the power supply system, any temperature control structure is conducted, the normally closed contact of the contactor is disconnected, and the output line of the power supply system is cut off. The temperature control structure filled with the resistance phase-change material is utilized to realize the temperature monitoring of the power supply assembly, when the temperature of any temperature control assembly reaches the early warning temperature, the temperature control assembly is conducted to control the normally closed contact of the main loop to be disconnected, the loop of the power supply system is immediately cut off, and the protection of the whole power supply system is actively realized.
Description
Technical Field
The invention belongs to the technical field of power battery safety, and particularly relates to an over-temperature early warning and active safety control system device and a control method.
Background
The lithium battery is widely applied in the electric automobile industry at present, and along with the popularization of the electric automobile application, the safety of a battery system is more and more emphasized. The battery pack of the electric automobile is formed by connecting battery monomers in series/parallel, the battery monomers cannot normally work in a high-temperature environment due to the temperature characteristics of the battery monomers, the performance of a battery system is seriously affected, the battery monomers can be overheated due to self heating of the battery monomers, overhigh environment temperature, short circuit in the battery monomers or other failures of the battery monomers and the like, thermal runaway is caused, and the temperature of a battery core reaches 600-700 ℃ when the battery monomers are out of control.
At present, the heat dissipation of a battery system adopts a conventional heat dissipation mode such as fan cooling or heat pipe cooling, but the whole battery pack is subjected to heat dissipation, and the heat runaway of a certain battery monomer is often unable to be realized; because the adjacent cells in the power battery module are tightly connected, and the contact area is large, the heat transfer efficiency between the adjacent cells is high, so that the thermal runaway of one cell usually triggers the thermal runaway of the adjacent cells, and the thermal runaway is diffused.
At present, the management method of thermal runaway mainly comprises temperature thermocouple monitoring. However, as the System increases, especially in the energy storage System, the huge number of cells, and each cell is provided with a thermocouple, and the temperature is monitored by a BMS (Battery Management System), which creates a great challenge for the control System.
The thermal runaway of the super capacitor monomer can be divided into four stages of bulging, cracking, thermal runaway (the temperature rise rate is more than or equal to 1 ℃/s) and ignition. Therefore, how to obtain a thermal runaway early warning method is to actively cut off a power loop of a system at the stage of bulging and opening before the thermal runaway of a monomer, and has important safety application value and significance.
CN104409794A discloses a temperature management device for a power battery pack of an electric vehicle, a manufacturing method and a using method thereof, wherein a honeycomb stainless steel sheet material is designed, flexible porous carbon nanofiber solvent adsorbate is filled in the honeycomb stainless steel sheet material, and the solvent flows in a damped pressure flow mode in a non-straight way; with a heating device. Low-temperature heating, high-temperature cooling and temperature equalization. The temperature management (cooling, heating and balancing) device applied to the power battery pack of the electric automobile mainly comprises a management device for low-temperature heating, high-temperature cooling and temperature balancing of the power battery pack, improves the safety of the power battery pack, improves the temperature management efficiency, reduces the temperature difference between electric cores in the power battery pack, ensures that the power battery pack can normally work in the defined service environment of the whole automobile, prolongs the service life and safely uses the power battery pack, and reduces the after-sale maintenance of the power battery pack.
CN110534842A discloses a battery pack temperature management method, which includes acquiring a real-time temperature of a battery pack; judging whether the real-time temperature is lower than a first temperature threshold value; if so, controlling the motor to enter an active short-circuit mode, controlling the engine to output kinetic energy to the motor, controlling the cooling liquid pump to pump out cooling liquid, enabling the cooling liquid to flow through the motor and the battery pack to transfer heat energy in the motor to the battery pack, and improving the temperature of the battery pack; if not, acquiring vehicle running mode information, controlling the motor to exit the active short-circuit mode, controlling the kinetic energy output of the engine to the motor according to the vehicle running mode information, and controlling the coolant pump to stop working; the invention also provides a device and a system; can utilize the motor to turn into the characteristic of heat energy at the lower condition of battery package temperature under the initiative short circuit mode, thereby convey the temperature that the battery package was improved to heat energy through the coolant liquid, make the battery package be in the operating condition of preferred, realize the temperature management to the battery package.
The existing control system devices all have the problems of complex control logic, slow control feedback, passive control and the like, so that the problem that how to actively control an energy supply system without human intervention and BMS (battery management system) signal supply becomes the problem which needs to be solved urgently at present under the condition that the control system devices are simple in structure is solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an overtemperature early warning and active safety control system device and a control method, wherein a temperature control structure filled with a resistance phase-change material is utilized to detect the temperature of a power supply system, when the temperature reaches the early warning temperature, the work of a main loop of the power supply system is immediately cut off, the protection of the power supply system and the protection of the whole device are realized, and the overtemperature early warning and active safety control system device has the characteristics of simple structure, timely response, high safety, high reliability and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an overtemperature early warning and active safety control system device, which comprises a power supply, a temperature control component and a contactor with a normally closed contact, wherein coils of the power supply, the temperature control component and the contactor are connected in series to form an electric loop, the temperature control component comprises a temperature control structure arranged in parallel, the temperature control structure comprises a shell filled with a resistance phase change material, and the temperature control structure is arranged on a power supply monomer, a monomer accommodating part or a power supply component in a power supply system; the normally closed contact of the contactor is arranged on an output line of a power supply system, any one of the temperature control structures is conducted, and the normally closed contact of the contactor is disconnected to cut off the output line of the power supply system.
The temperature control structure is arranged in parallel, and when any power supply unit or power supply module in the power supply assembly triggers thermal runaway early warning and thermal runaway tendency occurs, the temperature control assembly realizes current conduction, so that a main loop of the power supply system is adjusted and cut off, the power supply system stops working, active safety defense is realized, a BMS (battery management system) is not required to provide or receive signals, the power supply system is protected, the whole device is protected, and the temperature control structure has the characteristics of simple structure, timely response, high safety, high reliability and the like.
It should be noted that the power supply system is formed by connecting a plurality of power supply units in series or in parallel. The power supply system is connected with a load device, the specific structure of the load device is not required and limited, and a person skilled in the art can suitably set the load device according to the actual application condition.
It should be noted that the over-temperature warning and active safety control system device of the present invention may also be used in other devices requiring temperature control power failure, and the present invention exemplarily provides safety control for a power supply system.
As a preferred technical solution of the present invention, the resistive phase change material is a material that undergoes a phase transition at a phase transition temperature and is converted into a fast ion conductor.
Preferably, the resistive phase change material comprises a silver ion compound.
Preferably, the silver ion compound comprises beta-AgI, beta-Ag2S or Ag4P2O7Further, beta-AgI or beta-Ag is preferable2S。
As a preferred embodiment of the present invention, the housing is a cylindrical housing.
Preferably, a cylindrical cavity is arranged in the cylindrical shell.
Preferably, the diameter of the columnar cavity is ≦ 1cm, such as 0.1cm, 0.2cm, 0.3cm, 0.4cm, 0.5cm, 0.6cm, 0.7cm, 0.8cm, 0.9cm, or 1.0 cm.
Preferably, the material of the shell comprises glass and/or ceramic.
As a preferred technical solution of the present invention, the two ends of the housing are both provided with lead wires into which the resistive phase change material is inserted.
Preferably, two ends of the columnar cavity are provided with sealing structures, and the outgoing lines are inserted into the resistance phase change material through the sealing structures respectively.
As a preferable aspect of the present invention, a material of the sealing structure includes a heat-resistant material.
Preferably, the heat-resistant temperature of the heat-resistant material is not less than 250 ℃, for example 250 ℃, 300 ℃, 400 ℃, 500 ℃, 600 ℃, 800 ℃ or 1000 ℃.
It should be noted that, the material of the heat-resistant material in the present invention is not specifically required or limited, and those skilled in the art select the heat-resistant material according to the requirements of the working environment, for example, the material of the heat-resistant material includes ceramic glue.
As a preferred embodiment of the present invention, the power supply system includes one or a combination of at least two of a lithium ion battery, a super capacitor, a fuel cell, and a nickel-metal hydride battery.
Preferably, the temperature control structures correspond to the power supply units one to one.
In a second aspect, the present invention provides a method for controlling temperature control of a power supply system by an over-temperature warning and active safety control system apparatus according to the first aspect, where the method includes:
the power supply unit in the power supply system is heated to the early warning temperature, the resistance phase change material in the temperature control structure is subjected to phase change and is converted into a fast ion conductor, the line of the overtemperature early warning and active safety control system device is conducted, the normally closed contact of the contactor is disconnected, and the power supply system is cut off.
As a preferred technical scheme of the invention, the early warning temperature is 100-250 ℃, such as 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 200 ℃, 210 ℃, 220 ℃, 230 ℃, 240 ℃ or 250 ℃.
As a preferred technical solution of the present invention, the control method specifically includes the steps of:
the power supply unit in the power supply system is heated to the early warning temperature of 100-250 ℃, the resistance phase change material in the temperature control structure is subjected to phase change and is converted into a fast ion conductor, so that the circuit of the overtemperature early warning and active safety control system device is switched on, the normally closed contact of the contactor is switched off, and the power supply system is cut off.
The recitation of numerical ranges herein includes not only the above-recited values, but also any values between any of the above-recited numerical ranges not recited, and for brevity and clarity, is not intended to be exhaustive of the specific values encompassed within the range.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the resistance phase-change material is arranged in the temperature control structure, when the temperature of the power supply monomer reaches the early warning temperature, the resistance phase-change material can realize the conversion between the insulation state and the conductor state, further, through the parallel arrangement of the temperature control structure, any power supply monomer or power supply module in the power supply assembly triggers the early warning of thermal runaway, and when the trend of thermal runaway occurs, the temperature control assembly realizes current conduction, so that the main loop of the power supply system is cut off, the power supply system stops working, active safety defense is realized, a BMS is not required to provide or receive signals, the protection of the power supply system is realized, the protection of the whole device is realized, and the device has the characteristics of simple structure, timely response, high safety, high reliability and the like.
Drawings
FIG. 1 is a schematic structural diagram of a temperature-controlled active control system apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temperature control structure according to an embodiment of the present invention.
Wherein, 1-a load device; 2-a contactor; 3-a power supply; 4-temperature control structure; 5-a power supply monomer; 6-a shell; 7-resistance phase change material; 8-outgoing lines; 9-sealing structure.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical solution of the present invention is further explained by the following embodiments.
In a specific embodiment, the present invention provides a temperature-controlled active control system device, as shown in fig. 1, the overtemperature warning and active safety control system device includes a power supply 3, a temperature control component, and a contactor 2 with a normally closed contact, wherein coils of the power supply 3, the temperature control component, and the contactor 2 are connected in series to form an electrical circuit, the temperature control component includes a temperature control structure 4 arranged in parallel, the temperature control structure 4 includes a housing 6 filled with a resistance phase-change material 7, and the temperature control structure 4 is disposed on a power supply unit 5, a unit accommodating member, or a power supply component in a power supply system; the normally closed contact of the contactor 2 is arranged on an output line of the power supply system, any one of the temperature control structures 4 is conducted, the normally closed contact of the contactor 2 is disconnected, and the output line of the power supply system is cut off.
According to the invention, the resistance phase-change material 7 is arranged in the temperature control structure 4, when the temperature of the power supply monomer 5 reaches the early warning temperature, the resistance phase-change material 7 can realize the conversion between the insulation state and the conductor state, further, the temperature control structure 4 is arranged in parallel, any power supply monomer 5 or power supply module in the power supply assembly triggers the thermal runaway early warning, and when the thermal runaway trend occurs, the temperature control assembly realizes current conduction, so that the main loop of the power supply system is adjusted and cut off, the power supply system stops working, active safety defense is realized, a BMS (battery management system) is not required to provide or receive signals, the power supply system is protected, and the whole device is protected.
The power supply system is formed by connecting a plurality of power supply units 5 in series or in parallel. The power supply system is connected with a load device 1.
Further, the resistive phase change material 7 is a material that undergoes phase transition at a phase transition temperature and is converted into a fast ion conductor. Further, the resistive phase change material 7 comprises a silver ion compound, preferably beta-AgI, beta-Ag2S or Ag4P2O7Further, beta-AgI or beta-Ag is preferable2S。
Further, the housing 6 is a cylindrical housing 6, and a cylindrical cavity is arranged in the cylindrical housing 6. Furthermore, the diameter of the columnar cavity is less than or equal to 1 cm. The shell 6 is made of glass and/or ceramic.
Further, as shown in fig. 2, both ends of the case 6 are provided with lead wires 8 into which the resistive phase change material 7 is inserted. Furthermore, the two ends of the columnar cavity are provided with sealing structures 9, and the outgoing lines 8 are respectively inserted into the resistance phase change materials 7 through the sealing structures 9.
Further, the material of the seal structure 9 includes a heat-resistant material. The heat-resistant temperature of the heat-resistant material is more than or equal to 250 ℃. Ceramic glue may be selected.
Further, the power supply system comprises one or a combination of at least two of a lithium ion battery, a super capacitor, a fuel cell or a nickel hydrogen battery. Furthermore, the temperature control structures 4 correspond to the power supply units 5 one by one.
In another specific embodiment, the invention provides a control method for controlling the temperature of a power supply system by using the above over-temperature early warning and active safety control system device, where the control method specifically includes the following steps:
the power supply unit 5 in the power supply system is heated to the early warning temperature of 100-250 ℃, the resistance phase change material 7 in the temperature control structure 4 is subjected to phase change and is converted into a fast ion conductor, so that the line of the overtemperature early warning and active safety control system device is switched on, the normally closed contact of the contactor 2 is switched off, and the power supply system is cut off.
Example 1
The embodiment provides a temperature control active control system device, which is based on a specific implementation manner, wherein the resistance phase change material 7 is β -AgI, the diameter of the columnar cavity is 2mm, the shell 6 is made of glass, and the sealing structure 9 is made of ceramic glue. Wherein, the power supply assembly is a super capacitor.
The embodiment also provides a control method for controlling temperature by adopting the temperature control active control system device, which specifically comprises the following steps:
the power supply unit 5 in the power supply system is heated to the early warning temperature of 146 ℃, the resistance phase change material 7 in the temperature control structure 4 is subjected to phase change and is converted into a fast ion conductor, so that the circuit of the overtemperature early warning and active safety control system device is switched on, the normally closed contact of the contactor 2 is switched off, and the power supply system is cut off.
Example 2
In this embodiment, a temperature control active control system device is provided, based on a specific implementation manner, wherein the resistive phase change material 7 is β -Ag2S, the diameter of the columnar cavity is 1mm, the shell 6 is made of ceramic, and the sealing structure 9 is made of ceramic glue. Wherein, the power supply assembly is a super capacitor.
The embodiment also provides a control method for controlling temperature by adopting the temperature control active control system device, which specifically comprises the following steps:
the power supply unit 5 in the power supply system is heated to the early warning temperature of 175 ℃, the resistance phase change material 7 in the temperature control structure 4 is subjected to phase change and is converted into a fast ion conductor, so that the circuit of the overtemperature early warning and active safety control system device is switched on, the normally closed contact of the contactor 2 is switched off, and the power supply system is cut off.
Through the embodiment, the resistance phase-change material 7 is arranged in the temperature control structure 4, when the temperature of the power supply monomer 5 reaches the early warning temperature, the resistance phase-change material 7 can realize the conversion between the insulation state and the conductor state, further, the temperature control structure 4 is arranged in parallel, when any power supply monomer 5 or power supply module in the power supply assembly triggers the early warning of thermal runaway and the trend of thermal runaway occurs, the temperature control assembly realizes the current conduction, so that the main loop of the power supply system is adjusted and cut off, the power supply system stops working, the active safety defense is realized, the BMS is not required to provide or receive signals, the protection of the power supply system and the protection of the whole device are realized, and the device has the characteristics of simple structure, timely response, high safety, high reliability and the like.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The overtemperature early warning and active safety control system device is characterized by comprising a power supply, a temperature control component and a contactor with a normally closed contact, wherein coils of the power supply, the temperature control component and the contactor are connected in series to form an electric loop, the temperature control component comprises a temperature control structure arranged in parallel, the temperature control structure comprises a shell filled with a resistance phase-change material, and the temperature control structure is arranged on a power supply monomer, a monomer accommodating piece or a power supply component in a power supply system;
the normally closed contact of the contactor is arranged on an output line of a power supply system, any one of the temperature control structures is conducted, and the normally closed contact of the contactor is disconnected to cut off the output line of the power supply system.
2. The overtemperature warning and active safety control system device of claim 1, wherein the resistive phase change material is a material that undergoes phase change at a phase change temperature and is converted into a fast ionic conductor;
preferably, the resistive phase change material comprises a silver ion compound;
preferably, the silver ion compound comprises beta-AgI, beta-Ag2S or Ag4P2O7Further, beta-AgI or beta-Ag is preferable2S。
3. The overtemperature warning and active safety control system device of claim 1 or 2 wherein the housing is a cylindrical housing;
preferably, a cylindrical cavity is arranged in the cylindrical shell;
preferably, the diameter of the columnar cavity is less than or equal to 1 cm;
preferably, the material of the shell comprises glass and/or ceramic.
4. The overtemperature warning and active safety control system device as claimed in any one of claims 1 to 3, wherein lead-out wires inserted with a resistance phase change material are arranged at both ends of the housing;
preferably, two ends of the columnar cavity are provided with sealing structures, and the outgoing lines are inserted into the resistance phase change material through the sealing structures respectively.
5. The over-temperature warning and active safety control system device according to claim 4, wherein the material of the sealing structure comprises a heat-resistant material;
preferably, the heat-resistant temperature of the heat-resistant material is more than or equal to 250 ℃.
6. The overtemperature warning and active safety control system device of any of claims 1-5, wherein the power supply system comprises one or a combination of at least two of a lithium ion battery, a super capacitor, a fuel cell or a nickel hydrogen battery.
7. The overtemperature warning and active safety control system device as claimed in any one of claims 1-6, wherein the temperature control structures correspond to the power supply units one to one.
8. The method for controlling the temperature of a power supply system by the overtemperature warning and active safety control system device of any one of claims 1 to 7, wherein the method for controlling the temperature of the power supply system comprises the following steps:
the power supply unit in the power supply system is heated to the early warning temperature, the resistance phase change material in the temperature control structure is subjected to phase change and is converted into a fast ion conductor, the line of the overtemperature early warning and active safety control system device is conducted, the normally closed contact of the contactor is disconnected, and the power supply system is cut off.
9. The control method according to claim 8, wherein the early warning temperature is 100-250 ℃.
10. The control method according to claim 8 or 9, characterized in that the control method specifically comprises the steps of:
the power supply unit in the power supply system is heated to the early warning temperature of 100-250 ℃, the resistance phase change material in the temperature control structure is subjected to phase change and is converted into a fast ion conductor, so that the circuit of the overtemperature early warning and active safety control system device is switched on, the normally closed contact of the contactor is switched off, and the power supply system is cut off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110973534.2A CN113787915A (en) | 2021-08-24 | 2021-08-24 | Overtemperature early warning and active safety control system device and control method |
| PCT/CN2022/110065 WO2023024860A1 (en) | 2021-08-24 | 2022-08-03 | Over-heating early warning and active safety control system apparatus, and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110973534.2A CN113787915A (en) | 2021-08-24 | 2021-08-24 | Overtemperature early warning and active safety control system device and control method |
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| CN113787915A true CN113787915A (en) | 2021-12-14 |
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| WO (1) | WO2023024860A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024860A1 (en) * | 2021-08-24 | 2023-03-02 | 上海奥威科技开发有限公司 | Over-heating early warning and active safety control system apparatus, and control method |
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| JP2009076270A (en) * | 2007-09-19 | 2009-04-09 | Mitsubishi Heavy Ind Ltd | Battery and power source system using it |
| CN109286230A (en) * | 2018-12-18 | 2019-01-29 | 卢兴才 | Charging protection circuit for storage battery |
| CN113054329A (en) * | 2019-12-26 | 2021-06-29 | 荣盛盟固利新能源科技有限公司 | Lithium ion battery with overheating safety protection and overheating safety protection method thereof |
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| CN203800141U (en) * | 2014-04-25 | 2014-08-27 | 中航锂电（洛阳）有限公司 | Power battery system with thermal runaway protection function |
| CN111863526A (en) * | 2019-04-30 | 2020-10-30 | 中国科学技术大学 | Temperature control switch |
| CN113787915A (en) * | 2021-08-24 | 2021-12-14 | 上海奥威科技开发有限公司 | Overtemperature early warning and active safety control system device and control method |
-
2021
- 2021-08-24 CN CN202110973534.2A patent/CN113787915A/en active Pending
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- 2022-08-03 WO PCT/CN2022/110065 patent/WO2023024860A1/en active Application Filing
Patent Citations (3)
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| JP2009076270A (en) * | 2007-09-19 | 2009-04-09 | Mitsubishi Heavy Ind Ltd | Battery and power source system using it |
| CN109286230A (en) * | 2018-12-18 | 2019-01-29 | 卢兴才 | Charging protection circuit for storage battery |
| CN113054329A (en) * | 2019-12-26 | 2021-06-29 | 荣盛盟固利新能源科技有限公司 | Lithium ion battery with overheating safety protection and overheating safety protection method thereof |
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| WO2023024860A1 (en) * | 2021-08-24 | 2023-03-02 | 上海奥威科技开发有限公司 | Over-heating early warning and active safety control system apparatus, and control method |
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| WO2023024860A1 (en) | 2023-03-02 |
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