WO2019004632A1 - 배터리 모듈과 이를 포함하는 배터리 팩 및 자동차 - Google Patents
배터리 모듈과 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
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- WO2019004632A1 WO2019004632A1 PCT/KR2018/006603 KR2018006603W WO2019004632A1 WO 2019004632 A1 WO2019004632 A1 WO 2019004632A1 KR 2018006603 W KR2018006603 W KR 2018006603W WO 2019004632 A1 WO2019004632 A1 WO 2019004632A1
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- Prior art keywords
- bus bar
- battery cell
- battery
- electrode lead
- electrically connected
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
-
- 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
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
-
- 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 battery module, a battery pack and an automobile including the battery module, and more particularly, to a battery module having improved stability by preventing overcharging of the battery module, and a battery pack and an automobile including the battery module.
- the secondary rechargeable batteries are nickel-cadmium batteries, nickel-hydrogen batteries, nickel-zinc batteries, and lithium secondary batteries.
- lithium secondary batteries have almost no memory effect compared to nickel- It is very popular because of its low self-discharge rate and high energy density.
- the lithium secondary batteries mainly use a lithium-based oxide and a carbonaceous material as a cathode active material and an anode active material, respectively.
- the lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate each coated with such a positive electrode active material and a negative electrode active material are disposed with a separator interposed therebetween, and an outer casing, that is, a battery case, for sealingly storing the electrode assembly together with the electrolyte solution.
- a lithium secondary battery can be classified into a can type secondary battery in which an electrode assembly is embedded in a metal can, and a pouch type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of the casing.
- the battery pack of the hybrid vehicle or the electric vehicle includes a plurality of secondary batteries, and the plurality of secondary batteries are connected in series and in parallel to improve capacity and output.
- Such a secondary battery has excellent electrical characteristics, but decomposition reaction of active materials and electrolytes, which are constituent elements of the battery, is induced in an abnormal operation state such as overcharge, over discharge, high temperature exposure, electric short, There is a problem that the so-called swelling phenomenon occurs in which the battery expands. The swelling phenomenon accelerates such a decomposition reaction, thereby causing explosion and ignition of the secondary battery due to thermal runaway phenomenon.
- the secondary battery is provided with a protection circuit that cuts off current during overcharging, overdischarge, and overcurrent, a PTC element (PTC element) that cuts off the current due to a large increase in resistance when the temperature rises, Or a safety vent for venting gas.
- a PTC element PTC element
- the secondary battery since the secondary battery repeatedly expands and contracts even when it is in an abnormal operating state and not in an abnormal operating state, it can be disconnected even when it expands within a normal range, which causes a problem in operational reliability.
- the present invention relates to a battery pack having a first battery cell and a first battery cell and a second battery cell adjacent to the first battery cell and being moved in the direction of the first bus bar and the second bus bar, And a battery module including the battery module and the automobile.
- the battery module includes a battery module, a battery module, and a battery module.
- a battery module including a first bus bar electrically connected to a first electrode lead of a first battery cell, a second bus bar electrically connected to a second electrode lead of the second battery cell, The first bus bar and the second bus bar are moved toward the first bus bar and the second bus bar by receiving an expansion force due to an increase in volume of the first battery cell and another battery cell adjacent to the first battery cell, A short circuit part which is electrically connected to generate a short, and a cartridge which accommodates or supports at least a part of the first electrode lead, the second electrode lead, the first bus bar, the second bus bar and the short- .
- the shorting part includes a slide bar having a contact part for contacting the one end of the first battery cell at the other end to receive the inflation force, a seat part having a short-circuit terminal at one end, and a slide bar having one end and the other end, And a cushioning member that is compressed by the slide bar to absorb impact when the slide bar is moved toward the first bus bar and the second bus bar when the slide bar is moved toward the cartridge.
- the slide bar may receive the expansion force through the contact portion to move the first bus bar and the second bus bar Lt; / RTI >
- the shorting terminal is in contact with the first bus bar and the second bus bar to electrically connect the first bus bar and the second bus bar, thereby causing a short circuit.
- the shorting terminal may be formed of a conductive material.
- the first bus bar includes a first connection plate electrically connected to the first electrode lead, a second connection plate extending from the first connection plate toward the front of the first battery cell, And a second protrusion plate protruding from the first power source plate toward the second bus bar.
- the second bus bar includes a second connection plate electrically connected to the second electrode lead, a second connection plate extending from the second connection plate toward the front of the second battery cell, And a second protrusion plate protruding from the second power source plate toward the first bus bar.
- At least one of the first bus bar and the second bus bar is selected from at least one of the first bus bar and the second bus bar
- the rupture portion is formed to have a cross sectional area smaller than an average cross-sectional area of the first bus bar or the second bus bar.
- the rupture portion may be formed on at least one of the first power supply plate of the first bus bar and the second power supply plate of the second bus bar.
- the cartridge includes a receiving space having a shape corresponding to an outer shape of the shorting portion on the inner side so as to receive the shorting portion on the inner side.
- the cartridge supports at least a portion of each of the first electrode lead and the first bus bar electrically connected in face-to-face contact, and the second electrode lead and the second bus bar electrically connected to each other in face-to- At least some of which can be supported.
- the battery pack according to the present invention may include the battery module.
- the automobile according to the present invention may include the battery module.
- the first bus bar and the second bus bar by causing the first bus bar and the second bus bar to be electrically connected through the expansion force due to the volume increase of the first battery cell and the other battery cell adjacent to the first battery cell, thereby short-
- the break portion formed in at least one of the first bus bar and the second bus bar is broken to prevent the overcharge of the battery module, thereby improving the stability of the battery module.
- FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view showing only a module case of a battery module according to an embodiment of the present invention.
- FIG. 3 is an enlarged exploded perspective view illustrating a first bus bar, a second bus bar, and a short-circuit part of the battery module according to an embodiment of the present invention.
- FIG. 4 is a top view of a battery module according to an embodiment of the present invention before volume increase.
- FIG. 5 is a view showing only a first battery cell, a second battery cell, a third battery cell, a first bus bar, and a second bus bar of the battery module according to an embodiment of the present invention.
- FIG. 6 is a side view of a battery module according to an embodiment of the present invention, after a broken portion thereof is broken.
- FIG. 6 is a side view of a battery module according to an embodiment of the present invention, after a broken portion thereof is broken.
- FIG. 7 is a top view of the battery module after volume increase according to an embodiment of the present invention.
- FIG. 8 is an equivalent circuit diagram of a battery module according to an embodiment of the present invention before overcharging.
- FIG. 9 is an equivalent circuit diagram of a battery module according to an embodiment of the present invention, after a short circuit after overcharge.
- FIG. 10 is an equivalent circuit diagram of a battery module according to an embodiment of the present invention, in which after the battery module is overcharged, a short-circuiting portion moves to break the breaking portion.
- FIG. 11 is a perspective view showing the inside of a cartridge of a battery module according to an embodiment of the present invention.
- FIG. 1 is a perspective view of a battery module according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view illustrating only a module case of a battery module according to an embodiment of the present invention.
- FIG. 4 is a top view of the battery module according to an embodiment of the present invention before the volume of the battery module is increased.
- FIG. 4 is an enlarged exploded perspective view illustrating a first bus bar, a second bus bar, and a short-
- a battery module according to an embodiment of the present invention includes module cases C1, C2, and C3, battery cells 110a, 110b, and 110c, bus bars 200a and 200b, (300) and a cartridge (400).
- the module case (C1, C2, C3) accommodates the components of the battery module according to the present invention and protects the battery module from an external impact.
- the module cases C1, C2, and C3 include a housing C1 that accommodates the battery cells 110a, 110b, and 110c, the bus bars 200a and 200b and the short- A cover C2 covering the upper portion of the housing C1 and a clamp C3 supporting the battery cells 110a, 110b and 110c in the left and right directions inside the housing C1.
- the housing C1 and the cover C2 of the module cases C1, C2, and C3 can be sealed using welding.
- the housing C1 may be formed with bus bar holes C1-1 and C1-2 on its front surface, in which the bus bars 200a and 200b housed in the inner space protrude forward.
- the bus bars 200a and 200b connected to the electrode leads of the battery cells 110a, 110b and 110c are protruded and exposed to the outside of the module cases C1, C2 and C3,
- the battery cells 110a, 110b, and 110c are electrically connected to the bus bars 200a and 200b exposed to the outside of the battery cells C1, C2, and C3.
- the housing C1 includes electrode leads of the battery cells 110a, 110b and 110c which are in contact with each other in the inner space and support holes C1-3, C1-4 may be formed on the left and right sides.
- the electrode leads and the bus bars 200a and 200b of the battery cells 110a, 110b and 110c which are in contact with each other can be exposed to the outside, and even if they are separated from the ground, So that the contact state can be stably maintained.
- the clamp C3 can support the battery cells 110a, 110b, and 110c in the left and right directions while surrounding the left and right side surfaces and the lower side of the battery cells 110a, 110b, and 110c.
- the clamp C3 applies pressure to the right and left side surfaces of the battery cells 110a, 110b, and 110c, The swelling can be controlled to increase.
- the clamp C3 can guide the volume increase direction of the battery cells 110a, 110b, and 110c due to overcharging to the front and rear directions where the electrode leads are formed. Accordingly, when the volume of the battery cells 110a, 110b, 110c according to the present invention is increased by overcharging, the front and rear surfaces where the electrode leads are formed can expand.
- the module cases (C1, C2, C3) according to the present invention are not particularly limited as long as the components of the battery module can be accommodated in the inner space and the components can be protected. And can be employed in a battery module according to the invention.
- the plurality of battery cells 110a, 110b, and 110c may be provided, and the battery cells 110a, 110b, and 110c may be stacked in a lateral direction.
- the types of the battery cells 110a, 110b, and 110c are not particularly limited, and various secondary batteries may be employed in the battery module according to the present invention.
- the battery cells 110a, 110b, and 110c may be a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel hydride battery, a nickel zinc battery, or the like.
- the battery cells 110a, 110b, and 110c may be lithium secondary batteries.
- the battery cells 110a, 110b, and 110c may be classified into a pouch type, a cylindrical type, a prism type, or the like depending on the type of the casing.
- the battery cells 110a, 110b, and 110c of the battery module according to the present invention may be pouch type secondary batteries.
- each of the battery cells 110a, 110b and 110c When the battery cells 110a, 110b and 110c are implemented as a pouch type secondary battery, as shown in FIG. 2, each of the battery cells 110a, 110b and 110c has large surfaces on the left and right sides, And the wide surfaces of the battery cells 110a, 110b, and 110c may face each other.
- each of the battery cells 110a, 110b, and 110c may include electrode leads 120a and 120b protruding forward, or protruding toward the front and being bent.
- the electrode leads 120a and 120b may be composed of a positive electrode lead and a negative electrode lead, the positive electrode lead may be connected to the positive electrode plate of the electrode assembly, and the negative electrode lead may be connected to the negative electrode plate of the electrode assembly.
- the battery module according to the present invention includes a first battery cell 110a located at the leftmost position, a second battery cell 110b located at the rightmost position, a first battery cell 110a and a second battery cell 110b, And a plurality of third battery cells 110c positioned between the first and second battery cells 110a and 110b.
- the electrode leads of the first battery cell 110a and the second battery cell 110b may be arranged so that the electrode leads 120a and 120b of the other polarity are oriented in the same direction.
- the electrode leads of the first battery cell 110a and the second battery cell 110b may be formed to protrude forward and backward.
- the first battery cell 110a may be disposed such that the first electrode lead 120a, which is an anode, faces forward, and the second battery cell 110b may be disposed to face the first battery cell 110a,
- the two-electrode lead 120b may be arranged to face forward.
- the first electrode lead 120a of the first battery cell 110a may physically contact and be electrically connected to the first bus bar 200a described later. Accordingly, the first electrode lead 120a can be electrically connected to the anode of the external power source through the first bus bar 200a.
- the second electrode lead 120b of the second battery cell 110b may physically contact and be electrically connected to the second bus bar 200b described later. Accordingly, the second electrode lead 120b may be electrically connected to the cathode of the external power source through the second bus bar 200b.
- the first bus bar 200a may be a bus bar electrically connected to the first electrode lead 120a of the first battery cell 110a among the bus bars 200a and 200b according to the present invention
- the bar 200b may be a bus bar electrically connected to the second electrode lead 120b of the second battery cell 110b among the bus bars 200a and 200b according to the present invention.
- connection structure between the first electrode lead 120a and the first bus bar 200a of the first battery cell 110a according to the present invention and the connection structure between the second electrode lead 120b and the second electrode lead 120b of the second battery cell 110b, 2 bus bars 200b will be described in detail.
- FIG. 5 is a view showing only a first battery cell, a second battery cell, a third battery cell, a first bus bar, and a second bus bar of the battery module according to an embodiment of the present invention.
- the first electrode lead 120a of the first battery cell 110a protrudes forward from the first battery cell 110a and is bent at a substantially right angle toward the outside of the battery module, And may be in face-to-face contact with the bar 200a.
- the first bus bar 200a may include a first connection plate 210a, a second power supply plate 220a, and a first protrusion plate 230a.
- the first connection plate 210a is formed in a plate shape, and the first electrode leads 120a are in face-to-face contact with each other and can be electrically connected.
- the first connection plate 210a may extend in the same direction as the protrusion direction of the first electrode lead 120a. In other words, the first connection plate 210a may extend in the same direction as the bending direction of the vertically bent first electrode lead 120a extending toward the front of the first battery cell 110a.
- first connection plate 210a may be welded to and physically contacted with the first electrode lead 120a and electrically connected thereto.
- the first connection plate 210a is electrically connected to the first electrode lead 120a of the first battery cell 110a and the first bus bar 200a in a face- (420 in Fig. 3).
- the first connection plate 210a is electrically connected to the first electrode lead 120a of the first battery cell 110a and the first bus bar 200a in a face- And can be exposed to the outside through the support hole (C1-3 in Fig. 2).
- the first power plate 220a may be connected to one end of the first connection plate 210a and may extend from one end of the first connection plate 210a toward the front of the first battery cell 110a. have. That is, the other end of the first power supply plate 220a is perpendicular to one end of the first connection plate 210a, and one end of the first power supply plate 220a may extend toward the front of the first battery cell 110a have.
- the first power source plate 220a may have one end electrically connected to the positive electrode of the external power source.
- the first power supply plate 220a can be partially inserted into the support groove (420 in Fig. 3) of the cartridge (400 in Fig. 3) And can be exposed to the outside through a bar hole (C1-1 in Fig. 2).
- the first protrusion plate 230a may protrude from the first power supply plate 220a toward the second bus bar 200b.
- first protrusion plate 230a may protrude from the inner surface of the first power supply plate 220a so as to be substantially perpendicular to the first power supply plate 220a.
- the first protrusion plate 230a can be partially inserted into the support groove (420 in Fig. 3) of the cartridge (400 in Fig. 3) described later and supported.
- the first bus bar 200a may further include a break portion 240a.
- the breaking portion 240a may be formed on the first power source plate 220a as shown in FIG. More specifically, the rupturing portion 240a may be formed closer to the first battery cell 110a than the first protrusion plate 230a of the first power supply plate 220a.
- the rupture portion 240a may have a cross sectional area smaller than the cross sectional area of the first connection plate 210a, the first power supply plate 220a, and the first protrusion plate 230a.
- the rupture portion 240a formed in the first bus bar 200a may be formed to have a cross-sectional area smaller than the average cross-sectional area of the first bus bar 200a.
- the breaking portion 240a is formed to have a cross sectional area smaller than the cross sectional area of the first connection plate 210a, the first power supply plate 220a and the first projection plate 230a. Thus, when the current flows, have.
- the second bus bar 240a may be broken due to an overcurrent flowing through the first bus bar 200a to generate high-temperature resistance heat.
- the second electrode lead 120b of the second battery cell 110b protrudes forward from the second battery cell 110b and is electrically connected to the outside of the battery module, that is, the first electrode lead of the first battery cell 110a 120a may be bent substantially at right angles to the direction opposite to the direction in which they are folded, so that they may be in face-to-face contact with the second bus bar 200b.
- the second bus bar 200b may include a second connection plate 210b, a second power supply plate 220b, and a second protrusion plate 230b.
- the second connection plate 210b may be formed in a plate shape and may be electrically connected to the second electrode lead 120b in face-to-face contact with each other.
- the second connection plate 210b may extend in the same direction as the protrusion direction of the second electrode lead 120b. In other words, the second connection plate 210b may extend in the same direction as the bending direction of the vertically bent second electrode lead 120b extending toward the front of the second battery cell 110b.
- the second connection plate 210b may be welded to the second electrode lead 120b, physically contacted, and electrically connected.
- the second connection plate 210b is electrically connected to the second electrode lead 120b of the second battery cell 110b and the second bus bar 200b in a face- (420 in Fig. 3).
- the second connection plate 210b is electrically connected to the second electrode lead 120b of the second battery cell 110b and the second bus bar 200b in a face-to- And can be exposed to the outside through the support hole (C1-4 in Fig. 2).
- the second power supply plate 220b is connected to one end of the second connection plate 210b and extends from one end of the second connection plate 210b toward the front of the second battery cell 110b. have.
- the other end of the second power supply plate 220b is perpendicular to one end of the second connection plate 210b and the other end of the second power supply plate 220b is extended toward the front of the second battery cell 110b. have.
- one end of the second power supply plate 220b may be electrically connected to the cathode of the external power supply.
- the second power supply plate 220b can be partially inserted into the support groove (420 in FIG. 3) of the later described cartridge (400 in FIG. 3) And can be exposed to the outside through a bar hole (C1-2 in Fig. 2).
- the second protrusion plate 230b may protrude from the second power supply plate 220b toward the second bus bar 200b.
- the second protrusion plate 230b may protrude from the inner surface of the second power supply plate 220b so as to be substantially perpendicular to the second power supply plate 220b.
- the second projection plate 230b can be partially inserted into the support groove (420 in Fig. 3) of the cartridge (400 in Fig. 3) described later.
- FIG. 6 is a side view of a battery module according to an embodiment of the present invention, after a broken portion thereof is broken.
- FIG. 6 is a side view of a battery module according to an embodiment of the present invention, after a broken portion thereof is broken.
- the battery module according to the present invention may be configured such that, as shown in FIG. 6, The breaking portion 240a of the first bus bar 200a electrically connecting the first electrode lead 120a of the first bus bar 110a to the external power source may be broken to stop the charging.
- the electrical connection between the first bus bar 200a and the second bus bar 200b is performed by moving the shorting part 300 to be described below toward the first bus bar 200a and the second bus bar 200b,
- the shorting terminal 350 provided in the first bus bar 300 may be brought into contact with and electrically connected to the first bus bar 200a and the second bus bar 200b at the same time.
- the shorting part 300 can be moved toward the first bus bar 200a and the second bus bar 200b under the application of the expansion force generated by the volume increase of the first battery cell 110a due to overcharging.
- the shorting part 300 may be connected to another battery cell 110a adjacent to the first battery cell 110a, The cell 110c can receive the expansion force.
- the battery module according to the present invention applies the expansion force generated by the volume increase due to the overcharging of the first battery module 110a to the shorting part (300 in Fig. 3) so that the first bus bar 200a and the second bus bar 3 can be electrically connected to each other.
- the short-circuit current of the high current flowing in the first bus bar 200a and the second bus bar 200b causes the break portion 210a of the first bus bar 200a to break The charging can be stopped to prevent the battery module from overcharging.
- breakable portion 240a of the battery module according to an embodiment of the present invention is formed on the first bus bar 200a
- the break portion according to another embodiment of the present invention may be formed on the second bus bar.
- the break portion according to another embodiment of the present invention may be formed on both the first bus bar and the second bus bar.
- the breaking portion 240a may be formed to have a narrower width than the adjacent region, but the present invention is not limited thereto.
- the breaking portion 240a may be made of a metal having a melting point lower than that of the adjacent region, The present invention can be applied to the breakable portion 240a of the present invention without limitation.
- the shorting part 300 is moved toward the first bus bar 200a and the second bus bar 200b by the expansion force due to the volume increase of the first battery cell 110a, 2 bus bar 200b, thereby causing a short circuit.
- the shorting part 300 may include a slide bar 320 and a buffer member 310.
- the slide bar 310 can move toward the first bus bar 200a and the second bus bar 200b by receiving the expansion force when the other end of the slide bar 310 contacts the first battery cell 110a.
- the slide bar 310 may have a semi-cylindrical contact portion 321 at the other end thereof.
- the contact portion 321 may be curved so as to be in contact with the first battery cell 110a in order to uniformly apply an expansion force generated in a plurality of directions from the first battery cell 110a.
- the slide bar 310 may include a seating part on which a shorting terminal 322 that is in contact with the first bus bar 200a and the second bus bar 200b is seated.
- the seating portion is in surface contact with the plate-shaped shorting terminal 322 so that the shorting terminal 322 contacts the first bus bar 200a and the second bus bar 200b when the shorting terminal 322 contacts the first bus bar 200a and the second bus bar 200b. Can be stably supported.
- the buffer member 310 is disposed between the contact portion 321 and the cartridge 400 to prevent the shorting portion 300 from moving toward the first bus bar 200a and the second bus bar 200b, It is possible to prevent an unnecessary short circuit from occurring in the first bus bar 200a and the second bus bar 200b when the overcharge is not generated in the battery module and the expansion force due to the volume increase of the first battery cell 110a is not applied. can do.
- the cushioning member 310 may be formed of a sponge structure or a spring structure, and the cushioning member 310 is not limited as long as it can absorb shock.
- FIG. 7 is a top view of the battery module after volume increase according to an embodiment of the present invention.
- the volume of the first battery cell 110a may increase.
- the contact portion 321 of the slide bar 320 can receive the expansion force from the first battery cell 110a.
- the slide bar 320 can move in the direction a toward the first bus bar 200a and the second bus bar 200b due to the expansion force applied to the contact portion 321. [ The shorting terminal 322 that is seated in the seating portion of the slide bar 320 is in contact with the first bus bar 200a and the second bus bar 200b so that the first bus bar 200a and the second bus bar 200b, (200b) can be electrically connected.
- the circuit including the shorting terminal 322, the first bus bar 200a, and the second bus bar 200b can form a short circuit.
- the shorting terminal 322 may be formed of a conductive material.
- the shorting part 300 receives the expansion force from the first battery cell 110a,
- the first bus bar 200a and the second bus bar 200b are electrically connected to the first bus bar 200a and the second bus bar 200b to short-circuit the first bus bar 200a and the second bus bar 200b.
- FIG. 8 is an equivalent circuit diagram of the battery module according to the embodiment of the present invention before overcharging.
- FIG. 9 is an equivalent circuit diagram of the battery module according to an embodiment of the present invention.
- FIG. 6 is an equivalent circuit diagram of a battery module according to an embodiment of the present invention, after a short circuit after overcharging has occurred to break a breaking portion.
- FIG. 8 is an equivalent circuit diagram of the battery module according to the embodiment of the present invention before overcharging.
- FIG. 9 is an equivalent circuit diagram of the battery module according to an embodiment of the present invention
- FIG. 6 is an equivalent circuit diagram of a battery module according to an embodiment of the present invention, after a short circuit after overcharging has occurred to break a breaking portion.
- the battery module according to the present invention when the battery module according to the present invention operates in a normal state without being overcharged, the volume of the plurality of battery cells 110a, 110b, and 110c increases as shown in FIG.
- the first bus bar 200a and the second bus bar 200b may not be electrically short-circuited.
- the short-circuit part 300 applies the inflation force from the first battery cell 110a And can move to the first bus bar 200a and the second bus bar 200b.
- the shorting terminal of the shorting part 300 contacts the first bus bar 200a and the second bus bar 200b to electrically connect the first bus bar 200a and the second bus bar 200b A short circuit can be generated.
- the break portion 240a having a small cross-sectional area and a large resistance value generates a high-temperature resistance heat
- the power supplied to the battery module from the external power source is cut off, thereby preventing overcharge.
- FIG. 11 is a perspective view showing the inside of a cartridge of a battery module according to an embodiment of the present invention.
- the cartridge 400 includes a second electrode lead 120b of the first battery cell 110a, a second electrode lead 120b of the second battery cell 110b, a first bus bar 200a, The second bus bar 200b, and the short-circuit part 300, as shown in FIG.
- the cartridge 400 can support the first electrode lead 120a and the first bus bar 200a of the first battery cell 110a electrically connected in face-to-face contact with each other,
- the second electrode lead 120b and the second bus bar 200b of the second battery cell 110b connected to each other can be supported from below.
- the cartridge 400 includes a first electrode lead 120a of the first battery cell 110a, a second electrode lead 120b of the second battery cell 110b, a first bus bar 200a, A support groove 420 having a shape corresponding to the bent shape of the bus bar 200b may be formed.
- the cartridge 400 includes a receiving space 410 having a shape corresponding to the outer shape of the shorting part 300 and the outer shape of the shorting part 300 on the inner side so that the shorting part 300 can be received inside.
- the accommodating space 410 of the cartridge 400 may be formed to correspond to the movement of the shorting part 300.
- the accommodating space 410 of the cartridge 400 may be formed at a position before the shorting portion 300 is subjected to the inflation force and at a position after the shorting portion 300 after the inflation force is applied.
- the receiving space 410 may be formed on the inner side of the cartridge 400 in a shape corresponding to the outer shape of the shorting part 300.
- the battery module according to the present invention breaks the first bus bar precisely upon abnormal expansion of the battery cell to cut off the power supplied from the external voltage source, thereby preventing the overcharge of the battery module, thereby improving the stability of the battery module.
- the battery pack according to the present invention includes at least one of the above-described battery modules.
- the battery pack may further include a case for accommodating the battery module, various devices for controlling charge / discharge of the battery module, such as a battery management system (BMS), a current sensor, a fuse, and the like.
- BMS battery management system
- the battery pack according to an embodiment of the present invention includes a first bus bar, a second bus bar, a short-circuiting portion, and a cartridge for each battery module to break the first bus bar when the battery cell is abnormally expanded, The overcharge protection can be performed for each battery module.
- the battery module according to the present invention can be applied to an automobile such as an electric car or a hybrid car. That is, the automobile according to the present invention may include a battery module according to the present invention.
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Abstract
Description
Claims (14)
- 제1 배터리 셀의 제1 전극 리드와 전기적으로 연결된 제1 버스바;제2 배터리 셀의 제2 전극 리드와 전기적으로 연결된 제2 버스바;상기 제1 배터리 셀 및 상기 제1 배터리 셀과 인접한 다른 배터리 셀의 체적 증가로 인한 팽창력을 인가받아 상기 제1 버스바 및 상기 제2 버스바를 향해 이동하여 상기 제1 버스바 및 상기 제2 버스바를 전기적으로 연결시켜 단락(Short)을 발생시키는 단락부; 및상기 제1 전극 리드, 상기 제2 전극 리드, 상기 제1 버스바, 상기 제2 버스바 및 상기 단락부의 적어도 일부를 수용 또는 지지하는 카트리지를포함하는 배터리 모듈.
- 제1항에 있어서,상기 단락부는타단에 상기 제1 배터리 셀의 일단과 접촉되어 상기 팽창력을 인가받는 접촉부를 구비하고, 일단에 단락 단자가 안착되는 안착부를 구비하는 슬라이드 바; 및일단과 타단이 각각 상기 접촉부와 상기 카트리지에 접촉되어 상기 슬라이드 바가 상기 제1 버스바 및 상기 제2 버스바를 향해 이동하는 경우, 상기 슬라이드 바에 의해 압축되어 충격을 흡수하는 완충 부재를포함하는 배터리 모듈.
- 제2항에 있어서,상기 슬라이드 바는상기 제1 배터리 셀 및 상기 제1 배터리 셀과 인접한 다른 배터리 셀의 체적이 증가하는 경우, 상기 접촉부를 통해 상기 팽창력을 인가받아 상기 제1 버스바 및 상기 제2 버스바를 향해 이동하는 배터리 모듈.
- 제2항에 있어서,상기 단락 단자는상기 제1 버스바 및 상기 제2 버스바와 접촉하여 상기 제1 버스바 및 상기 제2 버스바를 전기적으로 연결시켜 단락을 발생시키는 배터리 모듈.
- 제2항에 있어서,상기 단락 단자는전도성 재질로 형성되는 배터리 모듈.
- 제1항에 있어서,상기 제1 버스바는상기 제1 전극 리드와 접촉되어 전기적으로 연결되는 제1 연결 플레이트;상기 제1 연결 플레이트로부터 상기 제1 배터리 셀의 전방을 향해 연장 형성되고, 외부 전원과 전기적으로 연결되는 제1 전원 플레이트 및상기 제1 전원 플레이트로부터 상기 제2 버스바를 향해 돌출 형성된 제2 돌출 플레이트를 구비하는 배터리 모듈.
- 제6항에 있어서,상기 제2 버스바는상기 제2 전극 리드와 접촉되어 전기적으로 연결되는 제2 연결 플레이트;상기 제2 연결 플레이트로부터 상기 제2 배터리 셀의 전방을 향해 연장 형성되고, 외부 전원과 전기적으로 연결되는 제2 전원 플레이트 및상기 제2 전원 플레이트로부터 상기 제1 버스바를 향해 돌출 형성된 제2 돌출 플레이트를 구비하는 배터리 모듈.
- 제7항에 있어서,상기 제1 버스바 및 상기 제2 버스바 중 적어도 어느 하나는상기 단락이 발생되는 경우, 파단되어 외부와의 전기적 연결을 차단하는 파단부를더 포함하는 배터리 모듈.
- 제8항에 있어서,상기 파단부는상기 제1 버스바 또는 상기 제2 버스바의 평균 단면적 보다 작은 단면적을 갖도록 형성되는 배터리 모듈.
- 제8항에 있어서,상기 파단부는상기 제1 버스바의 제1 전원 플레이트 및 상기 제1 버스바의 제2 전원 플레이트 중 적어도 하나에 형성되는 배터리 모듈.
- 제1항에 있어서,상기 카트리지는내측에 상기 단락부의 외형에 대응되는 형상의 수용 공간이 형성되어 상기 단락부를 내측에 수용하는 배터리 모듈.
- 제1항에 있어서,상기 카트리지는대면 접촉하여 전기적으로 연결된 상기 제1 전극 리드 및 상기 제1 버스바 각각의 적어도 일부를 지지하고, 대면 접촉하여 전기적으로 연결된 상기 제2 전극 리드 및 상기 제2 버스바 각각의 적어도 일부를 지지하는 배터리 모듈.
- 제1항 내지 제12항 중 어느 한 항에 따른 배터리 모듈을포함하는 배터리 팩.
- 제1항 내지 제12항 중 어느 한 항에 따른 배터리 모듈을포함하는 자동차.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18822578.3A EP3540818B1 (en) | 2017-06-27 | 2018-06-11 | Battery module, and battery pack and vehicle including the same |
| ES18822578T ES3042454T3 (en) | 2017-06-27 | 2018-06-11 | Battery module, and battery pack and vehicle including the same |
| US16/337,347 US10892468B2 (en) | 2017-06-27 | 2018-06-11 | Battery module with short-circuit unit, and battery pack and vehicle including the same |
| PL18822578.3T PL3540818T3 (pl) | 2017-06-27 | 2018-06-11 | Moduł akumulatorowy oraz pakiet akumulatorowy i pojazd zawierające ten moduł |
| JP2019548852A JP6804662B2 (ja) | 2017-06-27 | 2018-06-11 | バッテリーモジュール、それを含むバッテリーパック及び自動車 |
| CN201880004125.8A CN109891627B (zh) | 2017-06-27 | 2018-06-11 | 电池模块和包括所述电池模块的电池组和车辆 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0081350 | 2017-06-27 | ||
| KR1020170081350A KR102163656B1 (ko) | 2017-06-27 | 2017-06-27 | 배터리 모듈과 이를 포함하는 배터리 팩 및 자동차 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019004632A1 true WO2019004632A1 (ko) | 2019-01-03 |
Family
ID=64741685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2018/006603 Ceased WO2019004632A1 (ko) | 2017-06-27 | 2018-06-11 | 배터리 모듈과 이를 포함하는 배터리 팩 및 자동차 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US10892468B2 (ko) |
| EP (1) | EP3540818B1 (ko) |
| JP (1) | JP6804662B2 (ko) |
| KR (1) | KR102163656B1 (ko) |
| CN (1) | CN109891627B (ko) |
| ES (1) | ES3042454T3 (ko) |
| PL (1) | PL3540818T3 (ko) |
| WO (1) | WO2019004632A1 (ko) |
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| CN113748563A (zh) * | 2019-03-26 | 2021-12-03 | 株式会社Lg新能源 | 电池模块及其制造方法 |
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| KR102722633B1 (ko) * | 2019-03-26 | 2024-10-25 | 주식회사 엘지에너지솔루션 | 버스 바 모듈과 그 제조 방법 |
| CN114080726B (zh) * | 2020-01-21 | 2025-05-06 | 株式会社Lg新能源 | 单体模块组件和制造该单体模块组件的方法 |
| KR102862773B1 (ko) * | 2020-02-17 | 2025-09-19 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 자동차 |
| KR102767702B1 (ko) * | 2020-03-06 | 2025-02-12 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 그 제조 방법 |
| KR102877585B1 (ko) | 2020-04-24 | 2025-10-27 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지팩 |
| CN111653721B (zh) * | 2020-06-16 | 2022-06-17 | 合肥国轩高科动力能源有限公司 | 一种电池卷芯以及电池 |
| KR102607867B1 (ko) * | 2020-12-29 | 2023-11-29 | 주식회사 유라코퍼레이션 | 배터리 팩 |
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| CN118575360A (zh) * | 2022-09-15 | 2024-08-30 | 宁德时代新能源科技股份有限公司 | 电池、用电装置和电池的制备方法 |
| KR20240083564A (ko) * | 2022-12-05 | 2024-06-12 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지팩 |
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| CN113748563A (zh) * | 2019-03-26 | 2021-12-03 | 株式会社Lg新能源 | 电池模块及其制造方法 |
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| JP7286196B2 (ja) | 2019-03-26 | 2023-06-05 | エルジー エナジー ソリューション リミテッド | 電池モジュールおよびその製造方法 |
| CN113748563B (zh) * | 2019-03-26 | 2023-07-14 | 株式会社Lg新能源 | 电池模块及其制造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| ES3042454T3 (en) | 2025-11-21 |
| EP3540818A4 (en) | 2020-01-15 |
| EP3540818B1 (en) | 2025-09-03 |
| CN109891627A (zh) | 2019-06-14 |
| KR102163656B1 (ko) | 2020-10-08 |
| KR20190001409A (ko) | 2019-01-04 |
| CN109891627B (zh) | 2021-11-12 |
| JP2020515002A (ja) | 2020-05-21 |
| US10892468B2 (en) | 2021-01-12 |
| US20200035980A1 (en) | 2020-01-30 |
| JP6804662B2 (ja) | 2020-12-23 |
| PL3540818T3 (pl) | 2025-11-17 |
| EP3540818A1 (en) | 2019-09-18 |
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