WO2022119330A1 - 전장용 적층 세라믹 콘덴서 패키지 - Google Patents
전장용 적층 세라믹 콘덴서 패키지 Download PDFInfo
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- WO2022119330A1 WO2022119330A1 PCT/KR2021/018060 KR2021018060W WO2022119330A1 WO 2022119330 A1 WO2022119330 A1 WO 2022119330A1 KR 2021018060 W KR2021018060 W KR 2021018060W WO 2022119330 A1 WO2022119330 A1 WO 2022119330A1
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- ceramic capacitor
- multilayer ceramic
- extension plate
- terminal structure
- disposed
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- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 271
- 239000000463 material Substances 0.000 claims description 31
- 230000000694 effects Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 208000032365 Electromagnetic interference Diseases 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
- H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
- H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/02—Mountings
- H01G2/06—Mountings specially adapted for mounting on a printed-circuit support
- H01G2/065—Mountings specially adapted for mounting on a printed-circuit support for surface mounting, e.g. chip capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/14—Protection against electric or thermal overload
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/012—Form of non-self-supporting electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
- H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
- H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
- H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/224—Housing; Encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/228—Terminals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/495—Lead-frames or other flat leads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
Definitions
- the present invention relates to a capacitor, and more particularly, to a multilayer ceramic capacitor mounted on a vehicle.
- an on board charger (OBC) module that boosts external AC power and converts DC power is mounted during slow charging of the battery.
- OBC on board charger
- the multilayer ceramic capacitor is additionally mounted in the electric vehicle and the hybrid electric vehicle in order to remove EMI (Electro Magnetic Interference) noise generated at the power inlet of the OBC module.
- EMI Electro Magnetic Interference
- EOS protection devices such as varistors and TVS diodes are separately added to the front of the circuit. was adopted to minimize EOS damage.
- multilayer ceramic capacitors are difficult to realize high capacity when implementing capacitance characteristics, and thus are mainly used in low capacity application circuits.
- multilayer ceramic capacitors made of ferroelectric materials such as X7R material have a characteristic that the effective capacitance is lowered when the voltage is increased, resulting in uniform capacitance over a wide voltage range. It is difficult to have a value, so there is a problem in that a ripple of a power line and an effect of reducing power noise are reduced.
- a multilayer ceramic capacitor made of a paraelectric material such as COG or U2J having a small effective capacitance change rate has a problem in that it is difficult to realize high capacitance due to a low dielectric constant.
- the present invention has been proposed to solve the above problems, and an object of the present invention is to provide a multilayer ceramic capacitor package for electrical equipment to prevent noise, vibration, noise and cracks due to piezoelectric characteristics.
- the present invention has been proposed to solve the above problems, and it is different from providing a multilayer ceramic capacitor package for an electric device that is resistant to inrush current and EOS that may occur at the power input part through a complex structure. The purpose.
- an object of the present invention is to provide a high-capacity multilayer ceramic capacitor package for an electric field having stable capacitance and excellent DC bias characteristics in a wide voltage range. That is, recently released electric vehicles require constant capacitance characteristics in a voltage range of approximately 12V to 400V, and hybrid electric vehicles require constant capacitance characteristics in a voltage range of approximately 250V to 800V. is becoming Accordingly, an object of the present invention is to provide a high-capacity multilayer ceramic capacitor package for an electric field having stable effective capacitance characteristics in a wide operating voltage range.
- the multilayer ceramic capacitor package for an electric device is connected to a multilayer ceramic capacitor, a first terminal structure connected to the first side of the multilayer ceramic capacitor, and a second side of the multilayer ceramic capacitor, a second terminal structure disposed to face the first terminal structure with a multilayer ceramic capacitor interposed therebetween, wherein the first terminal structure has a first groove defined in a region in contact with a first side surface of the multilayer ceramic capacitor;
- the horizontal length of the groove is 30% or more and 50% or less of the horizontal length of the multilayer ceramic capacitor.
- the first terminal structure is disposed on a lower surface of the multilayer ceramic capacitor, a first horizontal plate disposed to be spaced apart from the lower surface of the multilayer ceramic capacitor, a first end is connected to the first horizontal plate, and is directed upward in which the multilayer ceramic capacitor is disposed.
- the first groove is defined as a space between the first extension plate and the second extension plate, and may be configured to expose a portion of the first side surface of the multilayer ceramic capacitor.
- the separation distance between the first extension plate and the second extension plate may be 30% or more and 50% or less of the length of the second end of the first vertical plate.
- the first extension plate and the second extension plate may include one or more contact protrusions formed on one surface facing the first side surface of the multilayer ceramic capacitor.
- a vertical length of the first groove may exceed a vertical length of the multilayer ceramic capacitor.
- a second groove is defined in a region in contact with the second side surface of the multilayer ceramic capacitor, and the horizontal length of the second groove may be 30% or more and 50% or less of the horizontal length of the multilayer ceramic capacitor.
- the second terminal structure is disposed on the lower surface of the multilayer ceramic capacitor, a second horizontal plate disposed to be spaced apart from the lower surface of the multilayer ceramic capacitor, the first end is connected to the second horizontal plate, and is directed upward in which the multilayer ceramic capacitor is disposed.
- the second groove is defined as a space between the third extension plate and the fourth extension plate, and may be configured to expose a portion of the second side surface of the multilayer ceramic capacitor.
- the separation distance between the third extension plate and the fourth extension plate may be 30% or more and 50% or less of the length of the second end of the second vertical plate.
- the third extension plate and the fourth extension plate may include one or more contact protrusions formed on one surface facing the second side surface of the multilayer ceramic capacitor.
- the multilayer ceramic capacitor package for an electric device further includes a protection element disposed under the multilayer ceramic capacitor, a first side contacting the first terminal structure, and a second side contacting the second terminal structure may include
- the protection element may be one of a varistor and a TVS diode.
- the multilayer ceramic capacitor package for an electric device may further include a connection electrode connected to a first external terminal disposed on a first side of the multilayer ceramic capacitor and a first external electrode disposed on a first side of the protection element.
- the multilayer ceramic capacitor is formed of a first material, a first multilayer ceramic capacitor having a first side in contact with a first terminal structure, and a second side contacting a second terminal structure with a first multilayer ceramic capacitor and a second material. and a second multilayer ceramic capacitor disposed under the capacitor, a first side contacting the first terminal structure, and a second side contacting the second terminal structure.
- the first material may be one of the X7T material and the PLZT material
- the second material may be the other one of the X7T material and the PLZT material.
- the multilayer ceramic capacitor package for an electric device may further include a connection electrode for externally connecting the second external terminal of the first multilayer ceramic capacitor and the second external electrode of the first multilayer ceramic capacitor.
- the multilayer ceramic capacitor package has an effect of preventing noise, vibration, noise and cracks due to piezoelectric characteristics.
- the multilayer ceramic capacitor package has an effect of stably mounting the multilayer ceramic capacitor on the circuit board while minimizing the piezoelectric noise transmitted to the circuit board.
- the multilayer ceramic capacitor package minimizes the bonding area between the terminal structure and the multilayer ceramic capacitor, thereby preventing cracks in the multilayer ceramic capacitor due to piezoelectric vibration.
- the multilayer ceramic capacitor package for electric equipment includes an EOS protection function, it has an effect that it can be used stably even in an environment in which inrush current and EOS occur.
- the multilayer ceramic capacitor package for electric use is composed of a single product without applying a plurality of components, it is unnecessary to use an additional device in the corresponding circuit, thereby minimizing the mounting area.
- the multilayer ceramic capacitor package for an electric vehicle has an effect of providing stable effective capacitance characteristics in an environment requiring a wide voltage range, such as an electric vehicle or a hybrid electric vehicle.
- the multilayer ceramic capacitor package for an electric device is a high-capacity ceramic capacitor having an effective capacitance characteristic, and may be applied to a power supply line having a wide operating voltage, such as an electric vehicle powertrain.
- the multilayer ceramic capacitor package for an electric device minimizes variables that may generate ripple and power noise in the power line, thereby achieving stable characteristics.
- FIG 1 and 2 are views for explaining an electric multilayer ceramic capacitor package according to a first embodiment of the present invention.
- FIG. 3 and 4 are views for explaining the first terminal structure of FIG. 1 .
- FIG. 5 and 6 are views for explaining the second terminal structure of FIG. 1 .
- FIG. 7 and 8 are views for explaining a general multilayer ceramic capacitor.
- FIGS. 9 and 10 are views for explaining an electric multilayer ceramic capacitor package according to a second embodiment of the present invention.
- FIG. 11 is a view for explaining an example in which the multilayer ceramic capacitor package for electrical use according to the second embodiment of the present invention is mounted on a circuit board;
- FIG. 12 is a view for explaining and comparing the EOS withstand voltage characteristics of the multilayer ceramic capacitor package for an electric device according to the second embodiment of the present invention and the conventional multilayer ceramic capacitor;
- FIG. 13 is a view for explaining a modified example of a multilayer ceramic capacitor package for an electric device according to a second embodiment of the present invention.
- FIG. 14 and 15 are views for explaining an electric multilayer ceramic capacitor package according to a third embodiment of the present invention.
- 16 and 17 are views for explaining the capacitance characteristics of a multilayer ceramic capacitor package for electric use according to a third embodiment of the present invention.
- each layer (film), region, pattern or structures are defined as being formed “on” or “under” the substrate, each layer (film), region, pad or patterns.
- “on” and “under” include both “directly” or “indirectly” formed through another layer.
- the standards for above or below each floor are based on the drawings.
- the package 100 of the multilayer ceramic capacitor 110 for electric use according to the first embodiment of the present invention includes a multilayer ceramic capacitor 110 , a first terminal structure 120 , and a second terminal structure. 130 is included.
- the multilayer ceramic capacitor 110 includes a body 112 formed as a rectangular parallelepiped having an upper surface, a lower surface, a front surface, a rear surface, a left surface, and a right surface, a first external terminal 114 formed on the left surface of the main body 112, the main body ( and a second external terminal 116 formed on the right side of the 112 .
- a plurality of internal electrodes are stacked inside the body 112 , and each internal electrode is connected to one of the first external terminal 114 and the second external terminal 116 .
- the first external terminal 114 and the second external terminal 116 may be partially formed on the upper surface, lower surface, front and rear surfaces of the main body 112 , and in this case, each other on the upper surface, lower surface, front and rear surfaces of the main body 112 . They face each other and are spaced apart from each other by a predetermined distance.
- the first terminal structure 120 is disposed on the left side of the multilayer ceramic capacitor 110 to contact the first external terminal 114 of the multilayer ceramic capacitor 110 .
- the first terminal structure 120 is in contact with a region formed on the left side of the main body 112 among the first external terminals 114 .
- the first terminal structure 120 includes a first horizontal plate 121 , a first vertical plate 122 , a first extension plate 123 , and a second extension plate 124 . is composed by
- the first horizontal plate 121 is disposed on the lower surface of the multilayer ceramic capacitor 110 .
- the first horizontal plate 121 is disposed to be spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance.
- the first horizontal plate 121 is in contact with a terminal of the circuit board when the multilayer ceramic capacitor 110 package 100 is mounted on a circuit board mounted in a vehicle.
- the first end of the first horizontal plate 121 is disposed at a position spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance.
- the second end of the first horizontal plate 121 is disposed at a position spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance, and disposed on the same line as the left side of the multilayer ceramic capacitor 110 .
- the first vertical plate 122 is disposed on the left side of the multilayer ceramic capacitor 110 .
- a first end of the first vertical plate 122 is connected to a second end of the first horizontal plate 121 .
- the first vertical plate 122 is bent upwardly at the first end. Accordingly, the first vertical plate 122 is disposed to form an angle of approximately 90 degrees with the first horizontal plate 121 .
- the second end of the first vertical plate 122 is disposed below the lower surface of the multilayer ceramic capacitor 110 .
- the second end of the first vertical plate 122 is disposed at a lower position than the lower surface of the multilayer ceramic capacitor 110, so that the multilayer ceramic capacitor ( 110) is spaced apart from the lower surface by a predetermined distance.
- the first extension plate 123 is connected to the second end of the first vertical plate 122 .
- the first extension plate 123 extends upward from the second end of the first vertical plate 122 and is disposed on the left side of the multilayer ceramic capacitor 110 .
- the first extension plate 123 is disposed on the left side of the multilayer ceramic capacitor 110 to contact the first external terminal 114 .
- the first extension plate 123 is disposed to be biased toward the front side of the multilayer ceramic capacitor 110 to contact a portion of the first external terminal 114 .
- One or more first contact protrusions 123a may be formed on the surface of the first extension plate 123 facing the left surface of the multilayer ceramic capacitor 110 .
- the first extension plate 123 is in contact with the first external terminal 114 through the first contact protrusion 123a.
- the first extension plate 123 may come into contact with the first external terminal 114 through surface contact without the first contact protrusion 123a being formed.
- the second extension plate 124 is connected to the second end of the first vertical plate 122 .
- the second extension plate 124 extends upward from the second end of the first vertical plate 122 and is disposed on the left side of the multilayer ceramic capacitor 110 .
- the second extension plate 124 is disposed on the left side of the multilayer ceramic capacitor 110 to be spaced apart from the first extension plate 123 .
- the second extension plate 124 is disposed to be biased toward the rear surface of the multilayer ceramic capacitor 110 and is in contact with another portion of the first external terminal 114 .
- One or more second contact protrusions 124a may be formed on the surface of the second extension plate 124 facing the left surface of the multilayer ceramic capacitor 110 .
- the second extension plate 124 is in contact with the first external terminal 114 through the second contact protrusion 124a.
- the second extension plate 124 may be in contact with the first external terminal 114 through surface contact without the second contact protrusion 124a being formed.
- the first terminal structure 120 includes the first vertical plate 122 , the first extension plate 123 , and the second extension plate.
- a first groove 125 is defined by 124 .
- the horizontal length W1 of the first groove 125 is formed to be 30% or more and 50% or less of the length W2 of the second end of the first vertical plate 122 .
- the horizontal length W1 of the first groove 125 may be formed to be 30% or more and 50% or less of the width of the multilayer ceramic capacitor 110 supported by the first terminal structure 120 .
- the separation distance between the first extension plate 123 and the second extension plate 124 is the second end of the first vertical plate 122 . It is formed by not less than 30% and not more than 50% of its length.
- the vertical length (H1, ie, height) of the first groove 125 is longer than the vertical length (height) of the multilayer ceramic capacitor 110 . Accordingly, when the left side of the package of the multilayer ceramic capacitor 110 is viewed, the lower portion of the first groove 125 is spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance. Through this, the multilayer ceramic capacitor 110 package may prevent cracks (breaking phenomenon) due to vibration noise of the multilayer ceramic capacitor 110 due to high pressure/high temperature.
- the second terminal structure 130 is disposed on the right side of the multilayer ceramic capacitor 110 to contact the second external terminal 116 of the multilayer ceramic capacitor 110 .
- the second terminal structure 130 is in contact with a region formed on the right side of the body 112 among the second external terminals 116 .
- the second terminal structure 130 includes a second horizontal plate 131 , a second vertical plate 132 , a third extension plate 133 , and a fourth extension plate 134 . is composed by
- the second horizontal plate 131 is disposed on the lower surface of the multilayer ceramic capacitor 110 .
- the second horizontal plate 131 is disposed to be spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance.
- the second horizontal plate 131 is in contact with another terminal of the circuit board when the multilayer ceramic capacitor 110 package 100 is mounted on a circuit board mounted in a vehicle.
- the first end of the second horizontal plate 131 is disposed at a position spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance.
- the first end of the second horizontal plate 131 is disposed to be spaced apart from the first end of the first horizontal plate 121 by a predetermined distance.
- the second end of the second horizontal plate 131 is disposed at a position spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance, and disposed on the same line as the right side of the multilayer ceramic capacitor 110 .
- the second vertical plate 132 is disposed on the right side of the multilayer ceramic capacitor 110 .
- the first end of the second vertical plate 132 is connected to the second end of the second horizontal plate 131 .
- the second vertical plate 132 is bent upwardly at the first end. Accordingly, the second vertical plate 132 is disposed to form an angle of approximately 90 degrees with the second horizontal plate 131 .
- the second end of the second vertical plate 132 is disposed below the lower surface of the multilayer ceramic capacitor 110 .
- the second end of the second vertical plate 132 is disposed at a lower position than the lower surface of the multilayer ceramic capacitor 110 . ) is spaced apart from the lower surface by a predetermined distance.
- the third extension plate 133 is connected to the second end of the second vertical plate 132 .
- the third extension plate 133 extends upward from the second end of the second vertical plate 132 and is disposed on the right side of the multilayer ceramic capacitor 110 .
- the third extension plate 133 is disposed on the right side of the multilayer ceramic capacitor 110 to contact the second external terminal 116 .
- the third extension plate 133 is disposed to be biased toward the front side of the multilayer ceramic capacitor 110 to contact a portion of the second external terminal 116 .
- One or more third contact protrusions 133a may be formed on the surface of the third extension plate 133 facing the right surface of the multilayer ceramic capacitor 110 .
- the third extension plate 133 is in contact with the second external terminal 116 through the third contact protrusion 133a.
- the third extension plate 133 may contact the second external terminal 116 through surface contact without the third contact protrusion 133a being formed.
- the fourth extension plate 134 is connected to the second end of the second vertical plate 132 .
- the fourth extension plate 134 extends upward from the second end of the second vertical plate 132 and is disposed on the right side of the multilayer ceramic capacitor 110 .
- the fourth extension plate 134 is disposed on the right side of the multilayer ceramic capacitor 110 to be spaced apart from the third extension plate 133 .
- the fourth extension plate 134 is disposed to be biased toward the rear surface of the multilayer ceramic capacitor 110 to contact another portion of the second external terminal 116 .
- One or more fourth contact protrusions may be formed on the surface of the fourth extension plate 134 facing the right surface of the multilayer ceramic capacitor 110 .
- the fourth extension plate 134 is in contact with the second external terminal 116 through the fourth contact protrusion.
- the fourth extension plate 134 may be in contact with the second external terminal 116 through surface contact without the fourth contact protrusion being formed.
- the second vertical plate 132 , the third extension plate 133 , and the fourth extension plate are provided on the second terminal structure 130 .
- a second groove 135 is defined by 134 .
- the horizontal length W1' of the second groove 135 is formed to be 30% or more and 50% or less of the length W2' of the second end of the second vertical plate 132 .
- the horizontal length W1 ′ of the second groove 135 may be formed to be 30% or more and 50% or less of the width of the multilayer ceramic capacitor 110 supported by the second terminal structure 130 .
- the separation distance between the third extension plate 133 and the fourth extension plate 134 is the second length of the second vertical plate 132 . It is formed by not less than 30% and not more than 50% of the length of the end.
- the vertical length (H1 ′, that is, the height) of the second groove 135 is longer than the vertical length (height) of the multilayer ceramic capacitor 110 . Accordingly, when the right side of the package of the multilayer ceramic capacitor 110 is viewed, the lower portion of the second groove 135 is spaced apart from the lower surface of the multilayer ceramic capacitor 110 by a predetermined distance. Through this, the multilayer ceramic capacitor 110 package may prevent cracks (breaking phenomenon) due to vibration noise of the multilayer ceramic capacitor 110 due to high pressure/high temperature.
- the multilayer ceramic capacitor 10 since the general multilayer ceramic capacitor 10 does not have resistance to EOS, when EOS is introduced while mounted in a vehicle, a short circuit (ie, an internal short) occurs from the inside. Cracks occur due to the generated short. Accordingly, the multilayer ceramic capacitor 10 is configured as an array 20 in which a plurality of multilayer ceramic capacitors 10 are connected in series, and is mounted in a vehicle.
- the multilayer ceramic capacitor package 200 for electrical use according to the second embodiment of the present invention includes a multilayer ceramic capacitor 210 , a protection element 220 , a first terminal structure 230 , and a first terminal structure 230 . and a two-terminal structure 240 .
- the multilayer ceramic capacitor 210 includes a first body 212 formed as a rectangular parallelepiped having an upper surface, a lower surface, a front surface, a rear surface, a left surface, and a right surface, and a first external terminal 214 formed on the left surface of the first body 212 . ), and a second external terminal 216 formed on the right side of the first body 212 .
- a plurality of internal electrodes are stacked inside the first body 212 , and each internal electrode is connected to one of the first external terminal 214 and the second external terminal 216 .
- the first external terminal 214 and the second external terminal 216 may be partially formed on the upper surface, lower surface, front and rear surfaces of the first body 212 , and in this case, the upper surface, lower surface, and front surfaces of the first body 212 . and facing each other from the rear surface and spaced apart from each other by a predetermined distance.
- the protection element 220 is stacked under the multilayer ceramic capacitor 210 .
- the protection element 220 includes a second body 222 , a first external electrode 224 , and a second external electrode 226 .
- the second body 222 is formed as a rectangular parallelepiped having an upper surface, a lower surface, a front surface, a rear surface, a left surface, and a right surface, and electrode structures of various structures for EOS protection may be formed therein.
- One of the varistor and TVS diode is taken as an example.
- the first external electrode 224 is formed on the left side of the second body 222
- the second external electrode 226 is formed on the right side of the second body 222 .
- the first external electrode 224 and the second external electrode 226 may be partially formed on the upper surface, the lower surface, the front surface, and the rear surface of the second body 222 , and in this case, the upper surface and the lower surface of the second body 222 . , facing each other from the front and rear surfaces and are spaced apart from each other by a predetermined distance.
- the first external electrode 224 is disposed to face the first external terminal 214 .
- a region located on the lower surface of the first body 212 among the first external terminals 214 and a region located on the upper surface of the second body 222 among the first external electrodes 224 are disposed to face each other.
- the second external electrode 226 is disposed to face the second external terminal 216 .
- a region located on the lower surface of the first body 212 among the second external terminals 216 and a region located on the upper surface of the second body 222 among the second external electrodes 226 are disposed to face each other.
- the multilayer ceramic capacitor package 200 for an electric device may further include a connection electrode connecting the second external terminal 216 and the second external electrode 226 .
- the first terminal structure 230 is disposed on the left side of the stack in which the multilayer ceramic capacitor 210 and the protection element 220 are stacked.
- the first terminal structure 230 is disposed to contact the first external terminal 214 and the first external electrode 224 .
- the first terminal structure 230 is in contact with a region formed on the left side of the first body 212 among the first external terminals 214 , and is formed on the left side of the second body 222 among the first external electrodes 224 . It is arranged to be in contact with the formed area.
- the second terminal structure 240 is disposed on the right side of the stack in which the multilayer ceramic capacitor 210 and the protection element 220 are stacked.
- the second terminal structure 240 is disposed to contact the second external terminal 216 and the second external electrode 226 .
- the second terminal structure 240 is in contact with a region formed on the right side of the first body 212 among the second external terminals 216 , and a region formed on the right side of the second body 222 among the second external electrodes 226 . placed in contact with
- the first terminal structure 230 and the second terminal structure 240 are bent inward from the bottom of the stack. That is, the multilayer ceramic capacitor package 300 for an electric vehicle is mounted on a circuit board mounted on a vehicle, and the first terminal structure 230 and the second terminal structure 240 have a region bent in the inner direction formed on the circuit board. is in contact with the terminal.
- a portion of an area of the first terminal structure 230 disposed under the stack is bent in the direction of the second terminal structure 240 to contact the terminals formed on the circuit board of the vehicle.
- the second terminal structures 240 a portion of a region disposed under the stack is bent in the direction of the first terminal structure 230 to contact other terminals formed on the circuit board of the vehicle.
- a plurality of multilayer ceramic capacitor packages for electrical use 200 may be mounted side by side on a circuit board.
- first multilayer ceramic capacitor package 200a and the first multilayer ceramic capacitor package 200b are arranged side by side.
- the first terminal structures 230 of the first multilayer ceramic capacitor package 200a for electrical use and the first multilayer ceramic capacitor package 200b are disposed side by side.
- the second terminal structures 240 of the first multilayer ceramic capacitor package 200a and the first multilayer ceramic capacitor package 200b are arranged side by side.
- the multilayer ceramic capacitor package 200 for an electric device has a two-row, two-column structure in which two multilayer ceramic capacitors 210 are disposed side by side at the top and two protection elements 220 are disposed side by side at the bottom.
- the conventional multilayer ceramic capacitor 10 is formed in a structure in which a plurality of ceramic capacitors configured as a single unit are connected in series. Accordingly, the conventional multilayer ceramic capacitor 10 has an EOS withstand voltage of about 700 to 770 when composed of one ceramic capacitor, and has an EOS withstand voltage of about 1700 to 1800 when two ceramic capacitors are connected in series, When two ceramic capacitors are connected in series, the EOS withstand voltage is approximately 2600-2800.
- the multilayer ceramic capacitor package 200 for an electric device is formed in a structure in which a ceramic capacitor and a ceramic capacitor package in which a protection element is stacked are connected in series.
- the multilayer ceramic capacitor package 200 for electric use has an EOS withstand voltage of about 2800 to 3000 when composed of one ceramic capacitor package, and has an EOS withstand voltage of about 2700 to 3000 when two ceramic capacitor packages are connected in series, When two ceramic capacitor packages are connected in series, they have an EOS withstand voltage of about 1800 to 2000.
- the EOS withstand voltage characteristic is increased compared to the conventional multilayer ceramic capacitor 210 .
- a ceramic capacitor package 200 for an electric device includes a first multilayer ceramic capacitor 210a , a second multilayer ceramic capacitor 210b , a protection element 220 , and a first It may be configured to include the terminal structure 230 and the second terminal structure 240 .
- the second multilayer ceramic capacitor 210b is stacked under the first multilayer ceramic capacitor 210a
- the protection element 220 is stacked under the second multilayer ceramic capacitor 210b.
- the first terminal structure 230 is connected to the first external terminals 214 of the first and second multilayer ceramic capacitors 210a and 210b and the first external electrode 224 of the protection element 220
- the second The terminal structure 240 is connected to the second external terminals 216 of the first and second multilayer ceramic capacitors 210b and the second external electrode 226 of the protection element 220 .
- two multilayer ceramic capacitors 210a and 210b and one protection element 220 are stacked as an example, but the present invention is not limited thereto and one multilayer ceramic capacitor 210 and two protection elements ( 220) may include a laminated body.
- the multilayer ceramic capacitor package 300 for electric use includes a first multilayer ceramic capacitor 310 , a second multilayer ceramic capacitor 320 , and a first terminal structure. It is configured to include a 330 and a second terminal structure 340 .
- the first multilayer ceramic capacitor 310 includes a first body 312 formed as a rectangular parallelepiped having an upper surface, a lower surface, a front surface, a left surface, and a right surface, and a first external terminal formed on the left surface of the first body 312 . 314 , and a second external terminal 316 formed on the right side of the first body 312 .
- a plurality of internal electrodes are stacked inside the first body 312 , and each internal electrode is connected to one of the first external terminal 314 and the second external terminal 316 .
- the first external terminal 314 and the second external terminal 316 may also be partially formed on the upper surface, lower surface, front and rear surfaces of the first body 312 , and in this case, the upper surface, lower surface, and front surfaces of the first body 312 . and facing each other from the rear surface and spaced apart from each other by a predetermined distance.
- the second multilayer ceramic capacitor 320 includes a second body 322 formed as a rectangular parallelepiped having an upper surface, a lower surface, a front surface, a rear surface, a left surface, and a right surface, and a first external terminal formed on the left surface of the second body 322 . 324 , and a second external terminal 326 formed on the right side of the second body 322 .
- a plurality of internal electrodes are stacked inside the second body 322 , and each internal electrode is connected to one of the first external terminal 324 and the second external terminal 326 .
- the first external terminal 324 and the second external terminal 326 may also be partially formed on the upper surface, lower surface, front and rear surfaces of the second body 322 , and in this case, the upper surface, lower surface, and front surfaces of the second body 322 . and facing each other from the rear surface and spaced apart from each other by a predetermined distance.
- the first multilayer ceramic capacitor 310 is disposed on the second multilayer ceramic capacitor 320 . Accordingly, the first external terminals 314 and 324 of the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 are disposed to face each other.
- Regions located on the upper surface of the body 322 are disposed to face each other.
- the second external terminals ( 316 and 326 are also arranged to face each other.
- Regions located on the upper surface of the body 322 are disposed to face each other.
- the second external terminals 316 and 326 of the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 are connected to each other. It may further include a connecting electrode for connecting.
- the first terminal structure 330 is disposed on the left side of the multilayer body in which the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 are stacked.
- the first terminal structure 330 is disposed to contact the first external terminals 314 and 324 of the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 .
- the first terminal structure 330 is in contact with a region formed on the left side of the first body 312 among the first external terminals 314 of the first multilayer ceramic capacitor 310 , and is formed on the second multilayer ceramic capacitor 320 .
- the first external terminals 324 they are disposed to be in contact with a region formed on the left side of the second body 322 .
- the second terminal structure 340 is disposed on the right side of the multilayer body in which the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 are stacked.
- the second terminal structure 340 is disposed to contact the second external terminals 316 and 326 of the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 .
- the second terminal structure 340 is in contact with a region formed on the right side of the first body 312 among the second external terminals 316 of the first multilayer ceramic capacitor 310 , Among the two external terminals 326 , they are disposed to be in contact with a region formed on the right side of the second body 322 .
- the multilayer ceramic capacitor package 300 for electrical equipment is mounted on a circuit board mounted on a vehicle, and the first terminal structure 330 and the second terminal structure 340 are formed with a terminal bent in an inner direction and a terminal formed on the circuit board. is contacted
- a portion of a region disposed under the laminate is bent in the direction of the second terminal structure 340 to contact the terminals formed on the circuit board of the vehicle.
- a portion of a region disposed under the stack is bent in the direction of the first terminal structure 330 to contact other terminals formed on the circuit board of the vehicle.
- the multilayer ceramic capacitor package 300 for an electric device implements two or more multilayer ceramic capacitors in a complex multilayer structure such as parallel connection, so that a wide voltage range is required, such as an electric vehicle or a hybrid electric vehicle. It realizes a high-capacity product while having stable effective capacitance characteristics in the environment.
- the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 are formed of different materials.
- the first multilayer ceramic capacitor 310 is formed of a PLZT material
- the second multilayer ceramic capacitor 320 is formed of an X7T material.
- the first multilayer ceramic capacitor 310 made of PLZT has a high capacitance characteristic C at a high voltage of about 200V or more.
- the second multilayer ceramic capacitor 320 made of X7T material has a high capacitance characteristic (D) at a low voltage of less than about 200V.
- the first multilayer ceramic capacitor 310 and the second multilayer ceramic capacitor 320 of different materials are implemented in a stacking type.
- the different DC bias characteristics of the two products are combined to have a stable effective capacitance (E) value.
Abstract
Description
Claims (15)
- 적층 세라믹 콘덴서;상기 적층 세라믹 콘덴서의 제1 측면과 연결된 제1 단자 구조물;상기 적층 세라믹 콘덴서의 제2 측면과 연결되고, 상기 적층 세라믹 콘덴서를 사이에 두고 상기 제1 단자 구조물과 대향되도록 배치된 제2 단자 구조물을 포함하고,상기 제1 단자 구조물은 상기 적층 세라믹 콘덴서의 제1 측면과 접촉되는 영역에 제1 홈이 정의되고,상기 제1 홈의 가로 길이는 상기 적층 세라믹 콘덴서의 가로 길이의 30% 이상 50% 이하인 적층 세라믹 콘덴서 패키지.
- 제1항에 있어서,상기 제1 단자 구조물은,상기 적층 세라믹 콘덴서의 하면에 배치되되, 상기 적층 세라믹 콘덴서의 하면과 이격되도록 배치된 제1 수평 플레이트;제1 단부가 상기 제1 수평 플레이트와 연결되고, 상기 적층 세라믹 콘덴서가 배치된 상부 방향으로 굴곡되고, 제2 단부가 상기 적층 세라믹 콘덴서보다 하부에 위치하도록 배치된 제1 수직 플레이트;상기 제1 수직 플레이트의 제2 단부에서 상부 방향으로 연장되고, 상기 적층 세라믹 콘덴서의 제1 측면의 제1 영역과 접촉된 제1 연장 플레이트; 및상기 제1 수직 플레이트의 제2 단부에서 상부 방향으로 연장되되 상기 제1 연장 플레이트와 이격되고, 상기 적층 세라믹 콘덴서의 제1 측면의 제2 영역과 접촉된 제2 연장 플레이트를 포함하고,상기 제1 홈은 상기 제1 연장 플레이트 및 상기 제2 연장 플레이트의 이격 공간으로 정의되고, 상기 적층 세라믹 콘덴서의 제1 측면의 일부를 노출시키도록 구성된 적층 세라믹 콘덴서 패키지.
- 제2항에 있어서,상기 제1 연장 플레이트 및 제2 연장 플레이트 사이의 이격 거리는 상기 제1 수직 플레이트의 제2 단부의 길이의 30% 이상 50% 이하인 적층 세라믹 콘덴서 패키지.
- 제2항에 있어서,상기 제1 연장 플레이트 및 상기 제2 연장 플레이트는 상기 적층 세라믹 콘덴서의 제1 측면과 마주하는 일면에 형성된 하나 이상의 접촉 돌기를 포함하는 적층 세라믹 콘덴서 패키지.
- 제1항에 있어서,상기 제1 홈의 세로 길이는 상기 적층 세라믹 콘덴서의 세로 길이를 초과하는 적층 세라믹 콘덴서 패키지.
- 제1항에 있어서,상기 제2 단자 구조물은 상기 적층 세라믹 콘덴서의 제2 측면과 접촉되는 영역에 제2 홈이 정의되고,상기 제2 홈의 가로 길이는 상기 적층 세라믹 콘덴서의 가로 길이의 30% 이상 50% 이하인 적층 세라믹 콘덴서 패키지.
- 제6항에 있어서,상기 제2 단자 구조물은,상기 적층 세라믹 콘덴서의 하면에 배치되되, 상기 적층 세라믹 콘덴서의 하면과 이격되도록 배치된 제2 수평 플레이트;제1 단부가 상기 제2 수평 플레이트와 연결되고, 상기 적층 세라믹 콘덴서가 배치된 상부 방향으로 굴곡되고, 제2 단부가 상기 적층 세라믹 콘덴서보다 하부에 위치하도록 배치된 제2 수직 플레이트;상기 제2 수직 플레이트의 제2 단부에서 상부 방향으로 연장되고, 상기 적층 세라믹 콘덴서의 제2 측면의 제1 영역과 접촉된 제3 연장 플레이트; 및상기 제2 수직 플레이트의 제2 단부에서 상부 방향으로 연장되되 상기 제3 연장 플레이트와 이격되고, 상기 적층 세라믹 콘덴서의 제2 측면의 제2 영역과 접촉된 제4 연장 플레이트를 포함하고,상기 제2 홈은 상기 제3 연장 플레이트 및 상기 제4 연장 플레이트의 이격 공간으로 정의되고, 상기 적층 세라믹 콘덴서의 제2 측면의 일부를 노출시키도록 구성된 적층 세라믹 콘덴서 패키지.
- 제7항에 있어서,상기 제3 연장 플레이트 및 제4 연장 플레이트 사이의 이격 거리는 상기 제2 수직 플레이트의 제2 단부의 길이의 30% 이상 50% 이하인 적층 세라믹 콘덴서 패키지.
- 제7항에 있어서,상기 제3 연장 플레이트 및 상기 제4 연장 플레이트는 상기 적층 세라믹 콘덴서의 제2 측면과 마주하는 일면에 형성된 하나 이상의 접촉 돌기를 포함하는 적층 세라믹 콘덴서 패키지.
- 제1항에 있어서,상기 적층 세라믹 콘덴서의 하부에 배치되고, 제1 측면이 상기 제1 단자 구조물과 접촉되고, 제2 측면이 상기 제2 단자 구조물과 접촉된 보호 소자를 더 포함하는 적층 세라믹 콘덴서 패키지.
- 제10항에 있어서,상기 보호 소자는 바리스터, TVS 다이오드 중 하나인 적층 세라믹 콘덴서 패키지.
- 제10항에 있어서,상기 적층 세라믹 콘덴서의 제1 측면에 배치된 제1 외부 단자 및 상기 보호 소자의 제1 측면에 배치된 제1 외부 전극과 연결된 연결 전극을 더 포함하는 적층 세라믹 콘덴서 패키지.
- 제1항에 있어서,상기 적층 세라믹 콘덴서는,제1 재질로 형성되고, 제1 측면이 상기 제1 단자 구조물과 접촉되고, 제2 측면이 상기 제2 단자 구조물과 접촉된 제1 적층 세라믹 콘덴서; 및제2 재질로 형성되어 상기 제1 적층 세라믹 콘덴서의 하부에 배치되고, 제1 측면이 상기 제1 단자 구조물과 접촉되고, 제2 측면이 상기 제2 단자 구조물과 접촉된 제2 적층 세라믹 콘덴서를 포함하는 적층 세라믹 콘덴서 패키지.
- 제13항에 있어서,상기 제1 재질은 X7T 재질 및 PLZT 재질 중 하나의 재질이고, 상기 제2 재질은 X7T 재질 및 PLZT 재질 중 다른 하나의 재질인 적층 세라믹 콘덴서 패키지.
- 제13항에 있어서,상기 제1 적층 세라믹 콘덴서의 제2 외부 단자 및 상기 제1 적층 세라믹 콘덴서의 제2 외부 전극을 외부에서 연결하는 연결 전극을 더 포함하는 적층 세라믹 콘덴서 패키지.
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CN202180086266.0A CN116635961A (zh) | 2020-12-03 | 2021-12-02 | 用于电子装置的叠层陶瓷电容器封装件 |
US18/265,132 US20240013979A1 (en) | 2020-12-03 | 2021-12-02 | Stacked ceramic capacitor package for electronic device |
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JP2018085425A (ja) * | 2016-11-22 | 2018-05-31 | Tdk株式会社 | セラミック電子部品 |
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US10886583B2 (en) | 2016-03-02 | 2021-01-05 | Gentherm Incorporated | Battery and capacitor assembly for a vehicle and a method for heating and cooling the battery and capacitor assembly |
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2021
- 2021-12-02 US US18/265,132 patent/US20240013979A1/en active Pending
- 2021-12-02 KR KR1020210170805A patent/KR20220078507A/ko unknown
- 2021-12-02 WO PCT/KR2021/018060 patent/WO2022119330A1/ko active Application Filing
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JPH11176695A (ja) * | 1997-12-08 | 1999-07-02 | Tokin Ceramics Kk | 過電流・過熱保護機能付積層セラミックコンデンサ |
KR20160089738A (ko) * | 2015-01-20 | 2016-07-28 | 삼성전기주식회사 | 적층 세라믹 전자 부품 및 그 실장 기판 |
KR101774463B1 (ko) * | 2016-03-04 | 2017-09-11 | 삼화콘덴서공업주식회사 | 적층 세라믹 커패시터 |
JP2018085425A (ja) * | 2016-11-22 | 2018-05-31 | Tdk株式会社 | セラミック電子部品 |
KR20170141631A (ko) * | 2017-12-13 | 2017-12-26 | 삼성전기주식회사 | 복합 전자부품, 제조방법, 그 실장 기판 및 포장체 |
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