WO2005029674A1 - キャパシタユニット - Google Patents
キャパシタユニット Download PDFInfo
- Publication number
- WO2005029674A1 WO2005029674A1 PCT/JP2004/013874 JP2004013874W WO2005029674A1 WO 2005029674 A1 WO2005029674 A1 WO 2005029674A1 JP 2004013874 W JP2004013874 W JP 2004013874W WO 2005029674 A1 WO2005029674 A1 WO 2005029674A1
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- WIPO (PCT)
- Prior art keywords
- case
- capacitor
- shield case
- unit according
- circuit
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims abstract description 96
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 230000005855 radiation Effects 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 230000001737 promoting effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000020169 heat generation Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 238000005476 soldering Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000191 radiation effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
-
- 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
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/25—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by controlling the electric load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- 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
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/142—Emission reduction of noise acoustic
-
- 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
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/145—Structure borne vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/11—Electric energy storages
- B60Y2400/114—Super-capacities
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
-
- 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 an emergency power supply for electronic equipment using a battery or the like, and more particularly to a capacitor unit used in an electronic brake system or the like for electrically braking a vehicle.
- capacitors such as electric double-layer capacitors have attracted attention as an emergency power source that has been replaced by batteries in recent years. How to use it If the battery is used, for example, to charge when the system is operating and to discharge when the system is not operating, the service life can be extended to several times that of the battery. Therefore, it is said that it can withstand 15 years of use, which is the target life of vehicles.
- FIG. 14 is an example of a cross-sectional view showing a conventional mounting.
- a circuit board 5001 has a circuit component 502 constituting a necessary circuit section mounted thereon.
- the circuit board 501 is used by fixing its end to the mounting portion 505 of the case 504 using screws 503 or the like.
- a capacitor block formed by sandwiching a plurality of capacitor bodies into a holder and electrically connecting them in series or in parallel;
- a control circuit unit including a charge / discharge circuit for charging / discharging the capacity unit
- a relay connector for electrically connecting the capacitor block and the control circuit unit
- Circuit components forming a charge / discharge circuit
- a radiator plate to suppress the heat generated by the circuit components when charging and discharging
- a microcomputer for detecting and controlling the state of the charge / discharge circuit and the capacity block
- FIG. 1 is a configuration diagram of an electronic brake system for a vehicle according to an embodiment of the present invention.
- FIG. 2 is an external perspective view of the capacitor unit according to the embodiment of the present invention.
- FIG. 3 is an exploded perspective view of a main part of the capacity unit.
- FIG. 4 is a perspective view of a main part of the capacitor unit with the upper cover removed.
- FIG. 5 is an exploded perspective view of a main part of a control circuit section of the capacitor unit.
- FIG. 6 is a circuit block diagram of the capacitor unit.
- FIG. 7 is a configuration perspective view of a leaf spring unit of the control circuit unit.
- FIG. 8 is a configuration perspective view of a leaf spring section of the control circuit section.
- FIG. 9 is an exploded perspective view showing a shield structure of a control circuit section of the capacitor unit.
- FIG. 10 is a perspective view of a main part showing a shield structure of a control circuit unit of the capacity unit.
- FIG. 11 is a perspective view of a main part showing a shield structure of a control circuit unit of the capacity unit.
- FIG. 12 is a perspective view of a relay connector of the capacity unit.
- FIG. 13 is a perspective view of a main part of a connector section of the capacitor unit.
- FIG. 14 is a cross-sectional view showing a conventional electronic device. BEST MODE FOR CARRYING OUT THE INVENTION
- Capacitors have the disadvantage of low withstand voltage due to their properties. Therefore, in order to obtain the required voltage, it is necessary to use multiple capacitors connected in series. Depending on the amount of energy required, it may be necessary to connect them further in parallel. In addition, it is necessary to provide a control circuit for charging and discharging the capacity.
- a heat sink is attached to the circuit board or circuit component for heat dissipation, and the circuit component is attached to the heat sink. It is common to dissipate heat by pressing.
- the present invention has been made to solve the above-mentioned problem, and has a unit formed of a capacitor block including a plurality of capacitors and a control circuit unit for controlling charging and discharging of the capacitor block so as to enhance reliability and safety. It contributes to improving the reliability and safety of the system used.
- the present invention provides an electronic device which does not apply a heavy load to a circuit board and has high reliability even in a use condition such as an automobile where the vibration and shock conditions are severe.
- FIG. 1 is a configuration diagram of an electronic control brake system for a vehicle according to an embodiment of the present invention.
- a battery 1 that supplies power a capacitor unit 2 that is an emergency power supply, and an electronic control unit 3 that controls an electronically controlled brake system are electrically connected to each other.
- the electronic control unit 3 is also connected to a brake pedal 4 and a hydraulic control unit 5.
- the hydraulic control unit 5 is connected to the brake 6 and the tire 7.
- the capacitor unit 2 is connected, and in the event of an unexpected event, the charge stored in the capacitor unit 2 is released by an instruction from the electronic control unit 3 to activate the electronically controlled brake system
- the vehicle is configured to brake the vehicle.
- the present invention relates to the capacitor unit 2 and will be described below.
- Fig. 2 shows a perspective view of the external appearance of the capacity unit 2.
- Figure 3, Figure 4, Figure 5 shows an exploded perspective view of the capacitor unit 2.
- the relay connector 13 electrically connects the capacitor block 11 and the control circuit section 12.
- the connector 14 is electrically connected to the electronic control unit 3 of the electronic control brake system.
- Case 15 stores these, and consists of lower case 15a and upper cover 15b.
- a lead wire 16a having ten polarities and a lead wire 16b having a negative polarity extend in the same direction on its upper surface.
- 28 capacitors 16 are configured in 7 series and 4 parallel. Assuming that the allowable voltage per capacitor 16 is 2 V, 7 capacitors are connected in series to apply to a 14 V system, and 4 capacitors are connected in parallel to secure the required charge. We are increasing.
- the holder 17 stably holds the 28 capacitors 16 in the form of 7 series and 4 parallel. At this time, the capacity 16 is assembled using a jig or the like so that the heights of the upper surfaces 16c from which the lead wires 16a and 16b extend are approximately equal to 28.
- the wiring board 18 On the wiring board 18, a circuit pattern for connecting a plurality of capacitors 16 in 7 series and 4 parallel is formed.
- the lead wires 16a and 16b of the capacitor 16 are inserted into the soldering lands of the wiring board 18 and soldered.
- the wiring board 18 has a connector 19 at an end thereof for electrically connecting to the control circuit section 12.
- the capacitor block 11 thus configured is housed in the lower case 15a and fixed with screws or the like.
- control circuit section 12 will be described in detail.
- FIG. 6 is a block diagram showing a circuit configuration of the capacitor unit of the present invention.
- the capacity unit 2 includes a microcomputer for transmitting and receiving various signals, a capacity block 11, a charge circuit 50 for instructing the capacity block 11 to charge, and a discharge circuit 51 for instructing discharge. And a backup detecting means 52 for detecting a voltage output from the battery 11, and an FET switch 54.
- the capacitor block 11 is used as an auxiliary power supply for supplying power to the hydraulic control unit 5 via the electronic control unit 3 when the battery 1 is abnormal, for example, by using an electric double layer capacitor capable of rapidly charging and discharging. It is formed by multiple capacities.
- the FET switch 54 enables discharge from the capacity block 11 to the electronic control unit 3 through the UT terminal 53 when the backup detection unit 52 detects a voltage abnormality.
- a circuit pattern of a charge / discharge circuit is formed on the circuit board 20.
- two FETs 21a and 21b are illustrated as circuit components for charging, and a diode 22a and a resistor 22b are illustrated as circuit components for discharging.
- These circuit components generate a large amount of current when charging and discharging and generate heat.
- FET 21a, 2 lb, diode 22a, and resistor 22b are each fixed with a lead wire to the circuit board 20 by soldering, and the heat radiating part formed on the back surface radiates heat. It is in pressure contact with plate 23 with moderate pressure.
- the control circuit section 12 thus configured is housed upright in the lower case 15a.
- a relay connector 13 extends from the circuit board 20 and is fitted and electrically connected to the connector 19 of the capacity block 11.
- the control circuit section 12 housed upright is composed of a heat sink 23 and FETs 21 a and 21 b as circuit parts for charging, a diode 22 a as a circuit part for discharging, and a resistor 22 b as a circuit part for discharging. Is mounted on the capacitor block It is arranged so as to be located on the opposite side of the circuit board 20 with respect to 11.
- a portion that generates heat due to a current when charging and discharging the capacitor block 11 can be located at a distance from the capacitor block 11 by using the circuit board 20 as a partition.
- a capacity unit that uses a plurality of capacities, it is necessary to make the capacity performance uniform. It is desirable that the ambient temperature of each capacitor be as uniform as possible. According to the present embodiment, it is possible to minimize variations in the temperature of the capacitor due to heat generated during charging and discharging.
- the surface 2 3 c of the heat sink 2 3 that is to be incorporated into the lower case 15 a has a concentric circle with the holes 23 a and 23 b, and the fixing boss 2 4 a and 2 of the lower case 15 a Concave holes 23d and 23e are formed to fit 4b.
- the position is regulated by the concave holes 23 d and 23 e and the fixing bosses 24 a and 24 b, and the mounting is performed.
- the circuit board 20 is stored in an upright state with respect to the lower case 15a, and its outer peripheral surfaces 20a, 20b, 20c., And 20d correspond to the lower case 15a. Is kept free within.
- the heat sink 23 is connected to the lower case 1.
- circuit board 20 Since the circuit board 20 is fixed to the lower case 15a, the circuit board 20 can be kept free without being fixed to the lower case 15a. Therefore, even when a load due to thermal expansion / contraction vibration is applied, stress is not applied to the soldered portions of the circuit components mounted on the circuit board 20, and an improvement in reliability can be expected.
- Figs. 7 and 8 for the method of stably radiating the FETs 21a and 21b and the diode 22a and the resistor 22b, which are the circuit components for charging and discharging, to the heatsink 23, Will be explained.
- a leaf spring 25 made of an elastic member such as stainless steel has a substantially U-shape, and a fixing hole 25a for a heat sink 23 is formed in the center thereof. Both ends are bent, and one end is an elastic piece 25b extending in the shape of an arm.
- the elastic pieces 25b which are the FET 21a, 21b, the diode 22a, and the resistance 22b
- a filed portion 25c is provided for stable pressure contact.
- the other is a guide portion 25 d having an appropriate length and coming into contact with a surface 23 c of the heat sink 23 that is to be incorporated into the lower case 15 a.
- the surface of the FET 21 a, 2 lb, the diode 22 a, the resistor 22 b, and the heat-dissipating plate 23 pressed against each other is coated with grease for promoting heat radiation made of silicon or the like.
- the pressing force by the leaf spring 25 is set between 0.1 N and 4.5 N in terms of surface pressure.
- the leaf spring 26 shown in FIG. 8 is manufactured by connecting the structures of the leaf panel 25. If there are multiple circuit components that require heat dissipation (four in this embodiment), press-connect simultaneously by using a connection-type panel panel 26 having elastic pieces 26a corresponding to the number of circuit components. Becomes possible.
- the pressure contact structure using the leaf spring 26 allows the charging and discharging circuit components FET 21a and 21b, the diode 22a, and the resistor 22b to be mounted on the circuit board. It is fixed by soldering to 20. However, since the heat radiating plate 23 is only pressed by an appropriate pressure, the stress generated in the soldered portion can be reduced even if there is a difference in the thermal expansion and contraction of each member due to a temperature change or the like. Further, the leaf spring 25 is formed in a substantially U-shape, and the position of the leaf spring 25 is regulated by the guide surface 25 d with respect to the heat radiating plate 23, thereby making it possible to reduce the variation in the pressing force.
- the plate spring 26 allows a plurality of circuit components to be pressed at the same time, thereby reducing the number of working steps and making the pressing force uniform.
- the crimping force is set to 0.1 N to 4.5 N. This is the minimum load that can reliably release heat to the heat sink 23 and the lead wire of the circuit component to be crimped and the circuit board It is determined based on the vibration of the soldered portion, the allowable stress of the soldered portion due to the temperature change, and the like. By controlling within this range, reliable heat radiation and breakage of the soldered portion due to vibration, temperature change, etc. can be prevented, leading to improvement in reliability.
- FIG. 9 the shield structure of the control circuit unit 12 will be described with reference to the perspective views of the main parts in FIGS. 9, 10, and 11.
- the shield case is divided into upper and lower parts, and is composed of a lower shield case 27 made of metal and an upper shield case 28.
- a lower shield case 27 made of metal
- an upper shield case 28 In the lower shield case 27, two case fixing pieces 29a and 29 are formed on the inner side by cutting and raising from the side.
- the lower case 15a has fixing bosses 30a, 30b extending at positions corresponding to the case fixing pieces 29a, 29b. Holes 31a and 3lb are formed on the bottom surface of the lower shield case 27 at positions concentric with the case fixing pieces 29a and 29b. In addition, holes 3 2a through which the fixing bosses 24a and 24b pass through at positions corresponding to the bosses 24a and 24b for fixing the heat sink 23 of the control circuit section 12 , 32b are formed.
- ground terminal 33 extends from the circuit board 20 of the control circuit section 12.
- the ground terminal 3 3 consists of the lead wire 3 3a and the terminal 3 3b at the tip, and the other side of the lead wire 3 3a is soldered to the ground of the circuit board 20. Has been damaged.
- the control circuit section 12 is assembled by fitting the holes 23a, 23b of the heat sink 23 with the fixing bosses 24a, 24b of the lower case 15a, and grounding.
- the terminal 33b of the terminal 33 is screwed together with the case fixing piece 29b to the fixing boss 30b with a screw.
- the other case fixing piece 29 a is fixed to the fixing boss 30 a with a screw.
- the shield structure is formed by covering the upper shield case 28. It is natural that various noise components are also included in the circuit configuration of the control circuit section 12.However, by further covering the entire control circuit section 12 with the lower shield case 27 and the upper shield case 28, High noise resistance can be achieved.
- one or both of the guide surface 35 and the guide surface 36 are closer to each other, and the distance is larger than the thickness of the walls 34a and 34b of the lower shield case 27. It is set to be smaller. Thus, the walls 34a and 34b are added between the guide surfaces 35 and 36.
- the lower shield case 27 and the upper shield case 28 can be assembled without any pressure. At the same time, the lower shield case 27 and the upper shield case 28 can be reliably kept in a short state, and higher shield performance can be exhibited.
- projections 37a and 37b are formed on the guide surface 35 of the upper shield case 28, and holes 38a and 38b are formed in the corresponding positions on the lower shield case 27. ing. Thereby, it is possible to prevent the shield case from half-fitting or loosening after fitting.
- cut-and-raised pieces 39 a and 39 b are formed on two longitudinal surfaces of the lower shield case 27.
- the distance between the tips of the cut-and-raised pieces 39a and 39b is slightly larger than the distance between the inner surfaces 40a and 40b of the lower case 15a to be inserted.
- the upper shield case 28 is also provided with cutouts 41a and 41b on two surfaces in the longitudinal direction to form a press fit with the inner surfaces 42a and 42b of the upper cover 15b. This also makes it possible to prevent vibration of the upper shield case 28.
- the lower shield case 27 or the upper shield case 28 (in the present embodiment, the lower shield case 27 will be described) has a piece 4 which is folded outward from the side surface. 3 is formed, and is led out of the case 15 while being incorporated in the case 15.
- the control circuit system can be reliably shielded.
- the folded piece 44 on the side surface of the lower shield case 27 has a further folded portion 44a in the middle, and is screwed to the center of the piece. Holes 4 4 b are formed.
- a plurality of nuts 45 having an appropriate nominal diameter are formed on the side surface of the lower case 15a by press-fit insert molding.
- the screw holes 4 4 b of the folded pieces 44 are formed in a dimensional relationship such that they are located at positions corresponding to the screw holes of the nut 45 in the state of the finished product assembled in the case 15. ing.
- the nut 46 is fastened to the nut 45 with screws together with the bracket 46 used for mounting on the vehicle.
- the ground potential of the shield case can be secured at the same time as the work of attaching the bracket to the vehicle, and the control circuit system can be reliably shielded.
- FIG. 12 shows a relay connector 13 for electrically connecting the control circuit section 12 and the capacitor block 11.
- the relay connector 13 requires a current capacity of 5 A, for example, the + and + wires and the connector terminal each require a current capacity of 5 A or more. Large connector terminals are required, which increases the space occupied by the product.
- the configuration is such that two electric wires 47 and connector terminals 48 each having a current capacity of not less than 2.5 A and not more than about 3 A are used in parallel. As a result, although the number is increased, a connector having a small size can be used. Further, a plurality of electric wires 47 and connector terminals 48 having a smaller capacity may be arranged in parallel.
- the dimension of the relay connector 13 in the parallel direction can be increased, but the dimension in the vertical direction and the front-back direction can be reduced. As can be seen from the perspective view of FIG. Since there is enough room, miniaturization as a whole is possible.
- FIG. 13 is a perspective view of a main part showing the periphery of the connector 14, and protection of the connector will be described.
- Connectors 14 are external load connectors (not shown). Because of its workability, it is protruding outside in the finished product state.
- a protective wall 49 protecting the connector 14 from the lower case 15 a is provided to cover the outer periphery of the connector 14. Further, the protection wall 49 is not covered only at a portion where the lock portion 14a for fitting provided on the connector 14 is provided. This is to make it easy to perform the fitting operation and to visually confirm the fitted state. This makes it possible to prevent the connector from being damaged due to unforeseen circumstances, such as during the handling of the finished product, for example, during the manufacturing process, transportation, or installation work on the vehicle.
- the capacitor unit of the present invention has a control circuit for arbitrarily charging and discharging the capacitor and a means for detecting the state of the capacitor block, thereby maximizing the performance of the capacitor. It is possible to do that. At the same time, the deterioration state can be monitored, and the optimal capacity unit with improved space efficiency can be provided by setting the control circuit upright with respect to the case when incorporating it into the case. Further, in the capacitor unit of the present invention, a portion that generates heat due to a current flowing during charging and discharging of the capacitor block can be located at a position separated from the capacitor port by using the circuit board as a partition.
- the capacity unit of the present invention is fixed to the case using the heat sink, it is possible to keep the circuit board constituting the control circuit unit in a free state without fixing the circuit board to the case.
- the board is directly fixed to the case with screws, even when there is thermal expansion or contraction due to a temperature change or the like, stress is not applied to the soldered portions of the circuit components constituting the circuit board. Therefore, the reliability of the control circuit can be improved.
- the position of the capacity unit of the present invention can be regulated when the heat sink is fixed to the case.
- the circuit of the control circuit is not used.
- the periphery of the circuit board can be maintained in a free state in the case, and even in the use condition where a load such as vibration or impact is applied, the stress is not applied to the soldered part of the circuit components, and the reliability can be improved.
- the circuit components of the control circuit which require heat radiation are pressed against the heat radiation plate mounted on the circuit board at a pressure suitable for heat radiation. Suppresses temperature rise of circuit components, prevents failure of circuit components, and can withstand long-term use.
- the capacity unit of the present invention reduces the stress on the soldered part of the circuit component due to thermal expansion / contraction and vibration by maintaining the pressure appropriately by pressure contact with the panel panel, and ensures reliable heat dissipation. Will be possible.
- the capacity unit of the present invention stabilizes the pressure contact force of the circuit components and enables a stable heat radiation effect.
- the capacity unit of the present invention can stably mount the charge / discharge circuit components pressed against the heat sink, which leads to an improvement in the reliability of the charge / discharge circuit.
- the capacity unit of the present invention can promote heat radiation of circuit components during charge / discharge control of the capacitor unit, can suppress a rise in temperature with a relatively low pressing force, prevent failure of the circuit components, and provide long-term use. I can stand it.
- the capacity unit of the present invention has a minimum load capable of surely releasing heat to the heat sink and a tolerance of the soldering portion due to vibration or temperature change of the soldering portion of the lead wire of the circuit component to be pressed and pressed. It is determined from the stress, and by controlling within this range, it is possible to achieve both reliable heat radiation and prevention of solder cracks due to vibration and temperature changes.
- the capacity unit of the present invention when a plurality of circuit components are pressed against the heat sink, the mounting operation is simplified and the pressing force can be made uniform. Further, the capacity unit of the present invention secures the shield case to the case by fixing the shield case in the case together with the circuit board ground, and shields the ground by dropping the ground to the circuit board. The effect can be improved, and the reliability of the control circuit can be improved.
- the capacitor unit of the present invention can be easily assembled without using fixing screws and the like, and has excellent shielding properties.
- the capacitor unit of the present invention has a configuration in which fitting is prevented when the capacitor unit is fitted to the lower shield case, and the assembling property and the shielding property can be further improved.
- At least one set of holes and a fitting portion formed by a boss are formed at corresponding positions on the guide surface provided on the upper shield case and the wall surface of the lower shield case. It is configured so that the position is regulated in the assembled state, and the assemblability can be improved.
- the lower or upper shield case or both shield cases have cut-and-raised portions slightly larger than the size of the inner surface of the storage portion of the case so that the storage case in the case can be used.
- the shield case can be stored without play. Therefore, the noise between the shield case and the storage case can be eliminated to prevent the generation of abnormal noise during driving or the like.
- the lower shield case or the upper shield case has a piece folded outward from a side surface thereof. This piece is led out to the side of the case and is grounded to the ground of the external load.
- the shield case is mounted on the vehicle body. It is possible to drop it to the vehicle body ground via the mounting bracket, thus stabilizing the shield performance.
- the relay connector for electrically connecting the capacity block and the control circuit unit includes a plurality of connectors each having a current capacity smaller than that required for charging and discharging. Therefore, by using a small-sized connector and a thin wire, it is possible to improve space efficiency and improve workability as a result.
- the capacitor unit of the present invention can prevent the connector from being damaged due to a drop or an impact on the connector when the capacitor unit is assembled, transported, or attached to a vehicle, and the quality of the control circuit can be stabilized. Can be achieved.
- the leaf spring is machined in a U-shape, one of which has a surface in contact with the back surface of the heat sink, and the other is formed so as to press the circuit component against the heat sink.
- the intermediate part is fixed to the heat sink with screws.
- the present invention can maintain a plurality of capacitors connected in series or in parallel with high reliability, and can maximize the characteristics of the capacitors by providing a charge / discharge circuit. Provide a knit. Furthermore, in the present invention, various considerations are given to a structure for integrally incorporating the control circuit section and a shield structure, and a highly reliable and easy-to-use capacitor unit can be provided.
- the present invention enables a reliable heat dissipation and significantly improves reliability without applying stress to a soldered portion of a circuit component even in a use state where a load of vibration or impact is applied. Can be provided. Industrial applicability
- the capacitor unit according to the present invention can maintain a plurality of capacitors connected in series or in parallel with high reliability, and can maximize the characteristics of the capacitors by providing a charge / discharge circuit. It is suitable for use as a capacitor unit for an auxiliary power supply in a vehicle's electronically controlled brake system. Further, in the capacitor unit according to the present invention, the heat radiating plate is fixed to the case by screws, and the circuit board is kept free in the case. Since it can provide a holding structure that can greatly improve reliability without using it, it is suitable for use in applications that require vibration resistance and thermal shock resistance.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04773357.1A EP1571748A4 (en) | 2003-09-18 | 2004-09-15 | CAPACITOR UNIT |
US10/543,013 US7427851B2 (en) | 2003-09-18 | 2004-09-15 | Capacitor unit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003325816A JP4161862B2 (ja) | 2003-09-18 | 2003-09-18 | キャパシタユニット |
JP2003325814A JP2005093760A (ja) | 2003-09-18 | 2003-09-18 | 電子機器 |
JP2003-325816 | 2003-09-18 | ||
JP2003-325814 | 2003-09-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005029674A1 true WO2005029674A1 (ja) | 2005-03-31 |
Family
ID=34380320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/013874 WO2005029674A1 (ja) | 2003-09-18 | 2004-09-15 | キャパシタユニット |
Country Status (3)
Country | Link |
---|---|
US (1) | US7427851B2 (ja) |
EP (1) | EP1571748A4 (ja) |
WO (1) | WO2005029674A1 (ja) |
Cited By (1)
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CN103546018A (zh) * | 2013-11-05 | 2014-01-29 | 深圳市英威腾电气股份有限公司 | 一种功率单元及其制造方法 |
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WO2008099614A1 (ja) * | 2007-02-16 | 2008-08-21 | Panasonic Corporation | キャパシタユニットおよびその製造方法 |
FR2915626B1 (fr) | 2007-04-24 | 2010-10-29 | Batscap Sa | Module pour ensemble de stockage d'energie electrique |
FR2916306B1 (fr) | 2007-05-15 | 2009-07-17 | Batscap Sa | Module pour ensembles de stockage d'energie electrique permettant la detection du vieillissement desdits ensembles. |
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EP2113409A1 (en) * | 2008-04-30 | 2009-11-04 | Iveco France S.A. | Electrical energy storing systemand corresponding engine vehicle |
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ITTO20110769A1 (it) * | 2011-08-12 | 2013-02-13 | Magneti Marelli Spa | Dispositivo e metodo di scarica per un condensatore in un impianto elettrico di potenza di un veicolo con trazione elettrica |
EP2620965A1 (en) * | 2012-01-25 | 2013-07-31 | Volvo Car Corporation | Supercapacitors assembly with extended lifetime by heat and charging/discharging protection management of said supercapacitors |
FR2986657B1 (fr) * | 2012-02-03 | 2014-01-31 | Batscap Sa | Entretoise de positionnement, module de stockage d'energie l'ayant et procede d'assemblage du module |
US9179544B1 (en) * | 2014-04-28 | 2015-11-03 | General Electric Company | Method and apparatus for mechanical load reduction on the electrical terminals of a capacitor |
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JP6278243B2 (ja) | 2015-01-07 | 2018-02-14 | 株式会社オートネットワーク技術研究所 | 蓄電ユニット |
JP6512451B2 (ja) * | 2016-03-29 | 2019-05-15 | 株式会社オートネットワーク技術研究所 | 電源装置 |
CN109155530B (zh) | 2016-05-20 | 2023-08-29 | 京瓷Avx元器件公司 | 用于使电容器充电的系统和方法 |
KR20180013382A (ko) * | 2016-07-29 | 2018-02-07 | 삼성전자주식회사 | 인쇄회로기판 및 이를 포함하는 반도체 메모리 장치 |
JP7209650B2 (ja) | 2017-06-30 | 2023-01-20 | キョーセラ・エイブイエックス・コンポーネンツ・コーポレーション | ウルトラキャパシタモジュールのための平衡回路からの熱放散 |
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Also Published As
Publication number | Publication date |
---|---|
US7427851B2 (en) | 2008-09-23 |
EP1571748A4 (en) | 2014-04-30 |
EP1571748A1 (en) | 2005-09-07 |
US20060061937A1 (en) | 2006-03-23 |
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