WO2009134046A2 - 전기자동차용 2차 전지의 안전 스위치 및 이를 이용한 전기자동차용 2차 전지의 충방전 시스템 - Google Patents
전기자동차용 2차 전지의 안전 스위치 및 이를 이용한 전기자동차용 2차 전지의 충방전 시스템 Download PDFInfo
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- WO2009134046A2 WO2009134046A2 PCT/KR2009/002204 KR2009002204W WO2009134046A2 WO 2009134046 A2 WO2009134046 A2 WO 2009134046A2 KR 2009002204 W KR2009002204 W KR 2009002204W WO 2009134046 A2 WO2009134046 A2 WO 2009134046A2
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- secondary battery
- electric vehicle
- cut
- safety switch
- cutting
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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
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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
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/15—Preventing overcharging
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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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-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
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
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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
- 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
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
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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
- H02H7/18—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 for batteries; for accumulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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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
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H2001/5877—Electric connections to or between contacts; Terminals with provisions for direct mounting on a battery pole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H2003/007—Mechanisms for operating contacts the contacts being actuated by deformation of a flexible housing
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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
- H01M2200/00—Safety devices for primary or secondary 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
- 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
Definitions
- the present invention relates to a safety switch of a secondary battery for an electric vehicle and a charge / discharge system of a secondary battery for an electric vehicle using the same. More particularly, in the use of a secondary battery for an electric vehicle, overcharging, heat exposure, Attached to the outside of the secondary battery when the secondary battery is expanded or an excessive short circuit current flows in the secondary battery circuit due to a swelling phenomenon in which the secondary battery is expanded due to abnormal use state of the secondary battery such as short circuit and reverse connection.
- the switch of the secondary battery for an electric vehicle is operated to cut off the connection between the secondary battery and the driving motor of the electric vehicle to a technology for protecting the secondary battery.
- secondary batteries are rechargeable and have a large capacity, such as nickel cadmium, nickel hydrogen, and lithium ion batteries.
- the lithium ion battery is attracting attention as a next-generation power source due to its excellent characteristics such as long life and high capacity, but when exposed to abnormal use environment due to overcharge and heat exposure, gas is generated due to electrochemical action inside the battery. There is this rising problem.
- the electrolyte or the active material may be partially decomposed to increase the internal pressure and temperature of the battery and cause an explosion or fire.
- thermal and electrical safety tests such as overcharging, thermal exposure, short circuit, reverse connection, etc., are performed to verify the safety of the secondary battery.
- the prior art consists of a bimetal BM1 and a resistor R1.
- One of the three terminals of the bimetal BM1 is connected to the positive electrode of the secondary battery V1, the other is connected to the positive electrode of an external electrode (not shown), and the last one is a resistor ( Connected to one end of R1).
- the other end of the resistor R1 is connected to the negative electrode of the secondary battery V1.
- the negative electrode of the secondary battery V1 and the external electrode is connected to each other.
- the resistor R1 may be directly connected to the bimetal BM1 or may be connected through a conductive wire.
- the bimetal BM1 connects the positive electrode of the secondary battery V1 and the positive electrode of the external electrode at room temperature, and the secondary through the resistor R1 at high temperature.
- the positive electrode of battery V1 and the negative electrode of electrode are connected.
- the secondary battery V1 is short-circuited to cut off the supply of current from the external electrode and discharge through the bimetal BM1 and the resistor R1.
- the prior art having such a configuration and operation is to protect the secondary battery by controlling the switching operation in accordance with the temperature, but there is a problem to use an expensive bimetal element to perform the switching operation according to the temperature as described above.
- the conventional technology may partially protect the secondary battery with respect to the protection of the secondary battery against overcharging, but there is a problem in that a countermeasure against malfunction and misuse of the secondary battery such as short circuit and reverse connection is not provided. have.
- the conventional technology has a problem that a method for simultaneously solving the expansion phenomenon caused by chemical changes in the battery due to overcharge and the excessive short circuit current due to a short circuit is not established.
- the present invention has been made to solve the above problems, the present invention is an electric vehicle generated by the increase in the internal pressure of the secondary battery for the electric vehicle in the state of overcharging and heat exposure when using the secondary battery for the electric vehicle It is an object of the present invention to provide a safety switch of a secondary battery for an electric vehicle that can prevent explosion and fire caused by the rupture of the secondary battery for the electric vehicle due to the expansion phenomenon of the secondary battery, discharge of harmful gas.
- the secondary battery for electric vehicles when the secondary battery for electric vehicles is charged and discharged by using the safety switch of the secondary battery for the electric vehicle, the secondary battery for the electric vehicle is exploded due to abnormal operation such as overcharging, heat exposure, short circuit, and reverse connection. It is an object of the present invention to provide a charge / discharge system of a secondary battery for an electric vehicle using a safety switch of the secondary battery for an electric vehicle to prevent it.
- Safety switch of the secondary battery for an electric vehicle of the present invention for achieving the above object is any one of the secondary battery 10 of the secondary battery for the electric vehicle is composed of at least two secondary batteries electrically connected.
- a cutting member 110 attached to one surface and provided with a cutting body 112;
- a cut body 112 of the cutting member 110 is close to the second battery when the secondary batteries are expanded by being swelled and attached to one surface of another secondary battery 20 facing the cutting member 110.
- a cut member 120 which is cut by an adjacent cut member 112 and is provided with a cut member 123 for blocking electrical connection of the secondary batteries.
- the cutting member 110 is protruded outwardly from the cutting body support 111 and the cutting body support 111 attached to any one of the secondary batteries 10, the end is made of a blade 113 It is characterized by including the cutting body 112.
- the cut member 120 is attached to the other secondary battery 20, the cut body support portion 121 and the cut body provided with a cut body insertion groove 122 into which the cut body 112 is inserted It is characterized in that it comprises a cut body 123 is laminated on the front surface to the support portion 121 and the cutting portion 124 is cut by the cutting body 112 in the center of the plate shape.
- the cut body 123 is connected to the other secondary battery 20 and has a fuse structure that is melted when a short circuit occurs.
- the cut body 123 is characterized in that a plurality of holes 125 or notches are formed to facilitate cutting and rugs.
- the cutting member 110 and the to-be-cut member 120 is characterized by being coated with a flame-retardant insulating material.
- the cutting member 110 and the cutting member 120 is characterized by being protected by a material that absorbs heat and spark generated when the cut of the cut body 123.
- the secondary battery charging system for an electric vehicle using the safety switch of the above-described secondary battery for an electric vehicle includes an electric vehicle secondary battery configured by stacking at least two or more secondary batteries 201 for supplying power to the electric vehicle. 200); A charging unit 220 in which electric power generated by the secondary battery 200 for the electric vehicle is charged; A driving motor 240 that receives power from the secondary battery 200 for the electric vehicle and generates power; An inverter unit 230 controlling the speed and direction of the driving motor 240; A battery relay unit 210 controlling the connection of the secondary battery 200 and the driving motor 240 for the electric vehicle; And at least one between the secondary batteries constituting the secondary battery 200 for the electric vehicle, and the secondary batteries may be changed according to displacement caused by the swelling phenomenon of the secondary battery 200 for the electric vehicle. It comprises a; safety switch 100 of the secondary battery for the electric vehicle for controlling the electrical connection breaking operation.
- the safety switch 100 of the secondary battery for the electric vehicle is operated when a displacement occurs in the secondary battery 200 for the electric vehicle to operate the secondary battery 200 for the electric vehicle and the driving motor 240. It is characterized by breaking the circuit connection.
- FIG. 1 (a) is a cross-sectional view of a conventional secondary battery safety device
- FIG. 2 is a conceptual diagram of an expansion phenomenon of a secondary battery
- Figure 3 is a side view showing a cutting member of the safety switch of the secondary battery for an electric vehicle of the present invention
- Figure 4 (a) is a side view showing a cutting member of the safety switch of the secondary battery for an electric vehicle of the present invention
- Figure 4 (b) is a front view of the cutting member of the safety switch of the secondary battery for an electric vehicle of the present invention
- Figure 5 is a side view of the safety switch of the secondary battery for an electric vehicle of the present invention.
- Figure 6 (a) is a state diagram showing the normal state of the safety switch of the secondary battery for an electric vehicle of the present invention
- Figure 6 (b) is a state diagram showing the operating state of the safety switch of the secondary battery for an electric vehicle of the present invention
- FIG. 7 is a conceptual diagram illustrating a state in which a cutting member of the safety switch of the secondary battery for an electric vehicle of the present invention is seated on the secondary battery
- FIG. 8 is a conceptual diagram illustrating a state in which a safety switch of the secondary battery for an electric vehicle of the present invention is connected to an electric vehicle motor and a charge control circuit.
- one secondary battery 20 another secondary battery
- first connection line 40 second connection line
- safety switch 110 of the secondary battery for electric vehicles cutting member
- cut unit support 122 cutting body insertion groove
- cut group 124 cut section of the cut group
- hole 200 secondary battery for electric vehicles
- FIG. 2 is a conceptual view of the expansion of the secondary battery
- Figure 3 is a side view showing a cutting member of the safety switch of the secondary battery for an electric vehicle of the present invention
- Figure 4 (a) is an electric vehicle 2 of the present invention
- Figure 4 is a side view showing the cut member of the safety switch of the vehicle battery
- Figure 4 (b) is a front view of the cut member of the safety switch of the secondary battery for the electric vehicle of the present invention
- Figure 5 is for the electric vehicle of the present invention
- FIG. 6 (a) is a state figure which shows the normal state of the safety switch of the secondary battery for electric vehicles of this invention
- FIG. 6 (b) is for the electric vehicle of this invention.
- FIG. 7 is a conceptual diagram which shows the state to which the to-be-cut member of the safety switch of the secondary battery for electric vehicles of this invention was seated in the secondary battery
- FIG. Of the secondary battery for electric vehicles of the invention A conceptual diagram showing a state where a safety switch is connected to an electric vehicle motor and a charge control circuit.
- FIG. 2A illustrates a front view of the secondary battery 10
- FIG. 2B illustrates a side view of the secondary battery 10
- FIG. The secondary battery 10 shows a state in which the secondary battery 10 is expanded due to a swelling phenomenon caused by a malfunction such as overcharge, short circuit, reverse connection, or the like.
- the secondary battery 10 has a sealed structure.
- gas is generated in the secondary battery 10, and thus the secondary battery 10 If the expansion is continued and the expansion continues, the secondary battery 10 may ignite and explode if chemicals such as electrolytes are leaked out or the degree thereof is severe.
- the safety switch 100 of the secondary battery for an electric vehicle includes a cutting member 110 having a cutting body 112 and a cutting body 111 of the cutting member 110.
- Cutting member 120 is provided with a cut member 123 to be cut by; It is configured to include.
- the cutting member 110 includes a cut body support 111 and a cut body 112 protruding outward from the cut body support 111 and having an end portion 113.
- the cut member 120 is attached to the other secondary battery 20, the cut body support portion 121 and the cut body provided with a cut body insertion groove 122 into which the cut body 112 is inserted It is laminated on the front surface of the support portion 121 and is configured to include a cut member 123 is cut by the cutting body 112 in the center of the plate (124).
- the cut body 123 is provided with the same width as the cutting body 112, a plurality of holes 125 or notches are formed to facilitate the cutting or carpeting, the hole 125 is preferably a rhombus shape. Do.
- the cut single body 123 is preferably made of a material having a low melting point to facilitate the carpet.
- the safety switch 100 of the secondary battery for an electric vehicle having the above-described configuration is installed between the secondary battery 200 for the electric vehicle, which is configured by at least two secondary batteries 201 electrically connected to each other. It is used as a safety device for automotive secondary batteries.
- the cutting member 110 of the safety switch 100 of the secondary battery for the electric vehicle is attached to one surface of any one secondary battery 10 and the to-be-cut member 120 is attached to one surface of another secondary battery 20 facing the cutting member 110.
- the one secondary battery 10 and the other secondary battery 20 is applied to two secondary batteries of the secondary battery 200 for the electric vehicle in which at least two secondary batteries are stacked will be.
- the cut member 120 has an upper portion of the cut member 123 on the positive electrode 21 and the first connection line 30 of any one secondary battery 20.
- the lower part of the cut body 123 is connected by the negative electrode 22 of the other secondary battery 20 and the second connecting line 40.
- the cutting member 110 and the cut member (1) may be formed by any one of the secondary batteries 10 and the other secondary batteries 20 expanded by the swelling phenomenon. 120 is in close proximity.
- the cutting body 112 having the blade 113 provided on the cutting member 110 may be formed of the cutting member 120.
- the cut portion 124 of the cut body 123 is cut and inserted into the cut body insertion groove 122.
- the cutting unit 124 is cut so that any one of the secondary battery 10 and the other secondary battery 20 is cut off the electrical connection, the secondary battery 200 for the electric vehicle to stop the power supply And the swelling phenomenon of any one secondary battery 10 and the other secondary battery 20 is blocked to prevent explosion and ignition of the secondary battery.
- the cut body 123 detects and generates a short circuit current when the short circuit current occurs in the connection part of the charge / discharge system circuit of the secondary battery 200 for the electric vehicle.
- the cutting part 124 of the cut body 123 is fused to prevent the abnormality of the other secondary battery 20 due to the occurrence of the short circuit current, so that the first connection line 30 and the second connection line 40 are not. By disconnecting the positive electrode 21 and the negative electrode 22 of the other secondary battery 20 connected by the operation of the other secondary battery 20 is stopped.
- the front surface of the cutting member 110 and the cutting member 120 is coated with a flame retardant insulator or a material that absorbs heat and flame in order to prevent the electrical spark diffusion phenomenon generated when the cut member 123 is cut. It is preferable.
- the cut body 123 is preferably protected with a material that absorbs the heat and flame generated during the overheating and melting of the cut and melted.
- the material absorbing the heat and flame is preferably silica (SiO 2 ) that absorbs the instantaneous arc heat generated by the carpet of the cut body 123 and serves as liquefaction and current protection.
- At least two secondary batteries 201 for supplying electric power to the electric vehicle are stacked and configured for the secondary battery 200 for the electric vehicle;
- a charging unit 220 in which electric power generated by the secondary battery 200 for the electric vehicle is charged;
- a driving motor 240 that receives power from the secondary battery 200 for the electric vehicle and generates power;
- An inverter unit 230 controlling the speed and direction of the driving motor 240;
- a battery relay unit 210 controlling the connection of the secondary battery 200 and the driving motor 240 for the electric vehicle;
- At least one is provided between the secondary batteries constituting the secondary battery 200 for the electric vehicle, the electrical of the secondary batteries in accordance with the displacement caused by the swelling phenomenon of the secondary battery 200 for the electric vehicle It is configured to include; safety switch 100 of the secondary battery for the electric vehicle for controlling the operation of disconnection.
- the secondary battery 200 for the electric vehicle supplies driving power to the driving motor 240, and the secondary battery 200 for the electric vehicle and the driving motor 240 are connected by a circuit.
- the connection between is controlled by the battery relay unit 210.
- the battery relay unit 210 includes a pair of the first battery relay 211 and the second battery relay 212.
- the battery relay unit 210 controls to supply power to the driving motor 240 and charges the charging unit 220 with power generated from the secondary battery 200 for the electric vehicle.
- the driving motor 240 is driven by receiving power generated from the secondary battery 200 for the electric vehicle that is charged in the charging unit 220.
- the inverter unit 230 is composed of four inverters to control the speed and direction of the drive motor.
- the inverter unit 230 used four inverters to help the understanding of the description, but may be modified according to the operating state and size of the drive motor 240.
- the battery relay unit 210 controls power to the drive motor 240
- the drive motor 240 is controlled by the inverter unit 230 and the power is supplied to the charging unit 220
- Overcharge, reverse connection, thermal exposure, and short circuit malfunction during the charging process cause displacement of one or more secondary batteries 201 constituting the secondary battery 200 for the electric vehicle more than a set value or excessive short circuit current.
- the safety switch 100 of the secondary battery for the electric vehicle is operated.
- the safety switch 100 of the secondary battery for the electric vehicle is cut by the swelling phenomenon and when the displacement is greater than a set value to the secondary battery 200 for the electric vehicle, the cut body 123 is cut and the electric When excessive short-circuit current flows in the secondary battery 200 for vehicles, it is melted to directly cut off the circuit connection between the secondary battery 200 for the electric vehicle and the driving motor 240.
- Safety switch of a secondary battery for an electric vehicle according to the present invention and a charge and discharge system of a secondary battery for an electric vehicle using the same the swelling phenomenon and short circuit caused by the overcharge, short circuit, reverse connection and heat exposure of the secondary battery
- the swelling phenomenon and short circuit caused by the overcharge, short circuit, reverse connection and heat exposure of the secondary battery There is an effect of safely protecting the heat and explosion of the secondary battery caused by the current with a single device.
- the secondary battery may leak or rupture by fundamentally shutting down the charging power through a method of directly blocking the main circuit by detecting a swelling phenomenon of the secondary battery. There is no effect to protect the battery.
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- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims (9)
- 적어도 둘 이상의 2차 전지가 전기적으로 연결되어 구성되는 전기자동차용 2차 전지에서 어느 하나의 2차 전지(10)의 일면에 부착되며 절단체(112)가 구비되는 절단부재(110); 및상기 절단부재(110)와 마주보는 다른 2차 전지(20)의 일면에 부착되어 스웰링 현상에 의해 상기 2차 전지들의 팽창 시 상기 절단부재(110)의 절단체(112)가 근접하고 상기 근접하는 절단체(112)에 의해 절단되어 상기 2차 전지들의 전기적 연결을 차단하는 피절단체(123)가 구비되는 피절단부재(120);를 포함하여 이루어지는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 1 항에 있어서,상기 절단부재(110)는 상기 어느 하나의 2차 전지(10)에 부착되는 절단체 지지부(111) 및 상기 절단체 지지부(111)로부터 외측방향으로 돌출되며 단부가 날(113)로 이루어지는 절단체(112)를 포함하여 구성되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 1 항에 있어서,상기 피절단부재(120)는 상기 다른 2차 전지(20)에 부착되며 상기 절단체(112)가 삽입되는 절단체 삽입홈(122)이 구비되는 피절단체 지지부(121) 및 상기 피절단체 지지부(121)에 전면에 적층되며 판상의 중앙에 상기 절단체(112)에 의해 절단부(124)가 절단되는 피절단체(123)를 포함하여 구성되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 3 항에 있어서,상기 피절단체(123)는 상기 다른 2차 전지(20)에 연결되며 단락전류가 발생하면 융단되는 퓨즈구조로 된 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 4 항에 있어서,상기 피절단체(123)는 절단 및 융단이 용이하도록 복수개의 홀(125) 또는 노치가 형성되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 4 항에 있어서,상기 절단부재(110) 및 피절단부재(120)는 상기 피절단체(123)의 융단 시 발생되는 열 및 불꽃을 흡수하는 물질에 의해 보호되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 제 4 항에 있어서,상기 절단부재(110) 및 피절단부재(120)는 난연성 절연물로 도포되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치.
- 전기자동차에 전원을 공급하는 적어도 둘 이상의 2차 전지(201)가 적층되어 구성되는 전기자동차용 2차 전지(200);상기 전기자동차용 2차 전지(200)에 의해 발생되는 전력이 충전되는 충전부(220);상기 전기자동차용 2차 전지(200)로부터 전력을 전달받아 동력을 발생하는 구동모터(240);상기 구동모터(240)의 속도 및 방향을 제어하는 인버터부(230);상기 전기자동차용 2차 전지(200)와 구동모터(240)의 연결을 제어하는 배터리 릴레이부(210);상기 전기자동차용 2차 전지(200)를 구성하는 2차 전지들 사이에 적어도 하나 이상 구비되며, 상기 전기자동차용 2차 전지(200)의 스웰링 현상에 의한 변위에 따라 상기 2차 전지들의 전기적 연결 차단 작동을 제어하는 제 1 항 내지 제 7 항 중 선택되는 어느 한 항에 의한 전기자동차용 2차 전지의 안전 스위치(100);를 포함하여 구성되는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치를 이용한 전기자동차용 2차 전지 충방전 시스템.
- 제 8 항에 있어서,상기 전기자동차용 2차 전지의 안전 스위치(100)는 상기 전기자동차용 2차 전지(200)에 변위가 발생되면 작동되어 상기 전기자동차용 2차 전지(200)와 상기 구동모터(240)의 회로 연결을 차단하는 것을 특징으로 하는 전기자동차용 2차 전지의 안전 스위치를 이용한 전기자동차용 2차 전지 충방전 시스템.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US12/989,907 US8547069B2 (en) | 2008-04-28 | 2009-04-28 | Safety switch for secondary battery module for electric vehicle and charging and discharging system for secondary battery module for electric vehicle using the same |
EP09738952.2A EP2278677B1 (en) | 2008-04-28 | 2009-04-28 | Safety switch for secondary battery for electric vehicle and charging/discharging system for secondary battery for electric vehicle using the same |
JP2011506209A JP5395892B2 (ja) | 2008-04-28 | 2009-04-28 | 電気自動車用2次電池の安全スイッチ及びこれを用いた電気自動車用2次電池の充放電システム |
CN2009801151434A CN102017350A (zh) | 2008-04-28 | 2009-04-28 | 用于电动车的二次电池的安全开关及利用其的用于电动车的二次电池的充放电系统 |
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KR10-2008-0039278 | 2008-04-28 | ||
KR1020080039278A KR101128423B1 (ko) | 2008-04-28 | 2008-04-28 | 전기자동차용 2차 전지의 안전 스위치 및 이를 이용한전기자동차용 2차 전지의 충방전 시스템 |
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WO2009134046A2 true WO2009134046A2 (ko) | 2009-11-05 |
WO2009134046A3 WO2009134046A3 (ko) | 2010-01-21 |
WO2009134046A9 WO2009134046A9 (ko) | 2010-07-29 |
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PCT/KR2009/002204 WO2009134046A2 (ko) | 2008-04-28 | 2009-04-28 | 전기자동차용 2차 전지의 안전 스위치 및 이를 이용한 전기자동차용 2차 전지의 충방전 시스템 |
Country Status (6)
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US (1) | US8547069B2 (ko) |
EP (1) | EP2278677B1 (ko) |
JP (1) | JP5395892B2 (ko) |
KR (1) | KR101128423B1 (ko) |
CN (1) | CN102017350A (ko) |
WO (1) | WO2009134046A2 (ko) |
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- 2009-04-28 JP JP2011506209A patent/JP5395892B2/ja active Active
- 2009-04-28 CN CN2009801151434A patent/CN102017350A/zh active Pending
- 2009-04-28 EP EP09738952.2A patent/EP2278677B1/en not_active Not-in-force
- 2009-04-28 WO PCT/KR2009/002204 patent/WO2009134046A2/ko active Application Filing
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Publication number | Publication date |
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WO2009134046A9 (ko) | 2010-07-29 |
KR20090113521A (ko) | 2009-11-02 |
US20110037430A1 (en) | 2011-02-17 |
JP5395892B2 (ja) | 2014-01-22 |
KR101128423B1 (ko) | 2012-03-23 |
CN102017350A (zh) | 2011-04-13 |
JP2011521609A (ja) | 2011-07-21 |
US8547069B2 (en) | 2013-10-01 |
EP2278677A4 (en) | 2012-08-01 |
EP2278677A2 (en) | 2011-01-26 |
EP2278677B1 (en) | 2013-08-28 |
WO2009134046A3 (ko) | 2010-01-21 |
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