WO2020072048A1 - Système de puissance intégré - Google Patents

Système de puissance intégré

Info

Publication number
WO2020072048A1
WO2020072048A1 PCT/US2018/054173 US2018054173W WO2020072048A1 WO 2020072048 A1 WO2020072048 A1 WO 2020072048A1 US 2018054173 W US2018054173 W US 2018054173W WO 2020072048 A1 WO2020072048 A1 WO 2020072048A1
Authority
WO
WIPO (PCT)
Prior art keywords
board
power
converter
chassis
power system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2018/054173
Other languages
English (en)
Inventor
Michael HARLOW
Craig A. KEICHER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alion Science and Technology Corp
Original Assignee
Alion Science and Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alion Science and Technology Corp filed Critical Alion Science and Technology Corp
Priority to EP18936174.4A priority Critical patent/EP3861839A4/fr
Priority to PCT/US2018/054173 priority patent/WO2020072048A1/fr
Priority to JP2021544090A priority patent/JP7250150B2/ja
Publication of WO2020072048A1 publication Critical patent/WO2020072048A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/183—Internal mounting support structures, e.g. for supporting printed circuit boards
    • G06F1/188—Mounting of power supply units
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14322—Housings specially adapted for power drive units or power converters wherein the control and power circuits of a power converter are arranged within the same casing
    • 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
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
    • F42B15/01—Arrangements thereon for guidance or control
    • F42B15/04—Arrangements thereon for guidance or control using wire, e.g. for guiding ground-to-ground rockets

Definitions

  • a missile guidance set (MGS) for a tube-launched, optically-tracked, wire-guided (TOW) missile system requires a power system to operate.
  • the power system typically includes several components, such as two battery assemblies, a battery charger, a battery charger monitor unit, a battery power conditioner, a vehicle power conditioner, at least two primary batteries, a battery case, and a TVPC, which may weigh over 170 pounds in total.
  • the conventional battery assembly utilizes nickel cadmium cell technology.
  • the list of problems with this legacy battery system are every increasing.
  • the system itself is heavy and cumbersome to transport in the field, and when the system is deployed, the nickel cadmium batteries have, in practice, failed to provide the expected number of TOW missile firings.
  • charging and discharging the batteries is inefficient as the batteries must be recharged using a nonmobile AC charging unit. If night sight operation is required, the legacy battery system cannot support the night sight, and thus, an additional battery device is required to operate the night sight.
  • the supply of nickel cadmium is diminishing, and one or more component of the conventional battery system are obsolete. Therefore, the cost of replacing one or more of these components is ever increasing.
  • the present disclosure relates generally to power systems, and more particularly, to integrated power system using improved battery technology and having a higher energy capacity than legacy battery systems.
  • the disclosed technology relates to a power system including a chassis configured to house a first board, a second board, and a third board, the first board, the second board, and the third board being electrically coupled to one another.
  • the first board is configured to receive power and to output power at a first voltage and a second voltage.
  • the second board is configured to receive power from the first board or at least one internal battery electrically coupled to the second board and to output power using at least two voltages.
  • the third board is configured to receive power from the second board and to output power at two voltages.
  • each of the first board, the second board, and the third board includes one or more converters configured to convert the received power into the respective output power.
  • the one or more converters are thermally interfaced with one or more portions of the chassis so as to conduct heat into a respective portion of the chassis.
  • the disclosed technology relates to a power system including: a chassis configured to house a first board and a second board, in which the first board and the second board are electrically coupled to one another.
  • the first board is configured to receive input power and to output power at a first voltage and a second voltage.
  • the second board is configured to receive power from the first board or at least one internal battery electrically coupled to the second board and to output power using at least two voltages.
  • each of the first board and the second board includes one or more converters configured to convert the received power into the respective output power.
  • the one or more converters are thermally interfaced with one or more portions of the chassis so as to conduct heat into a respective portion of the chassis.
  • FIG. 1A illustrates a perspective view of an example integrated power system.
  • FIG. 1B illustrates a perspective view of an inner portion of the integrated power system of FIG. 1A.
  • FIG. 1C illustrates a perspective view of the integrated power system of FIG. 1 A in an unassembled configuration.
  • FIG. 2 illustrates an interconnect diagram of the integrated power system of FIG. 1 A.
  • FIG. 3 illustrates a schematic of a current sensor of the interconnect diagram of FIG. 2.
  • FIG. 4 illustrates a schematic of a voltage converter and a capacitor circuit of the interconnect diagram of FIG. 2.
  • Embodiments of the present disclosure relate generally to power systems, and more particularly, to integrated power system using improved battery technology and having a higher energy capacity than legacy power systems. Embodiments of the power systems are described below with reference to FIGs. 1 A-4.
  • FIG. 1 illustrates a perspective view of an example integrated power system 100, according to one or more embodiments of the present disclosure.
  • the integrated power system 100 includes a chassis 102 that houses the components of the system 100.
  • the chassis 102 may include a handle 104 connected to a wall, such as the upper wall 103, of the chassis 102.
  • the handle 104 is fixed to the chassis 102.
  • the handle 104 is fastened to a portion of the upper wall 103 and is rotatable on the chassis 102, such that the handle 104 can move to an up position being perpendicular to the horizontal surface of the upper wall 103 of the chassis 102, or can move to a down position being parallel to the horizontal surface of the upper wall 103 of the chassis 102.
  • the chassis 102 is made of a metal, such as aluminum. In some embodiments, the chassis 102 is made of a cast alloy, for example cast aluminum A356. The walls of the chassis 102 are configured to thermally conduct and convect heat from the internal components of the chassis 102 to the outside environment.
  • the system 100 is configured to receive a maximum input at or about 200W of DC power, and is configured to generate a maximum output at or about 190W. In some embodiments, the system 100 is configured to produce, at an average efficiency of 88%, which can generate 34W of heat.
  • the chassis 102 is configured to receive one or more fasteners 110 on the upper wall 103 of the chassis 102.
  • the one or more fasteners 110 may be positioned to align with fastener receiving portions on a MGS battery receptacle of the MGS.
  • the fastener receiving portions may be inserted over the respective one or more fasteners 110. Thereafter, the user may tighten the one or more fasteners 110 to the MGS, thereby securing the system 100 to the MGS.
  • the one or more fasteners 110 can be turnlock fasteners, winged fasteners, screws, or any other type of fastener know to one or ordinary skill in the art.
  • the turnlock fasteners can be military turnlock fasteners NSN 5325-0l-l48-860lor similar.
  • the system 100 includes an input 122 and at least one of a first interface 120 and a second interface 116.
  • the input 122 and the second interface 116 are provide on the upper wall 103 of the chassis 102.
  • the first interface 120 is provided facing away from at least one of the input 122 and the second interface 116.
  • the rear wall 105 and either the side wall l07a or the side wall l07b form a notched wall portion 109.
  • the notched wall portion 109 may surround at least two sides of the first interface 120, in which the first interface 120 is positioned on one wall of the notched wall portion 109.
  • each of the input 122, the first interface 120, and the second interface 116 includes a cap H8a and a terminal H8b.
  • the cap of the input 122 may be cap D38999/33W15N and the corresponding terminal of the input may be D38999/24 WD97PN.
  • the cap 118a for each of the first interface 120 and the second interface 116 may be cap MS3181-12N, and the terminal H8b for the each of the first interface 120 and the second interface 116 may be terminal MS3124E12-10S.
  • the cap may be tethered to the terminal, and may include a mounting ring.
  • each of the input 122, the first interface 120, and the second interface 116 includes only the terminal 118b.
  • the terminals 118b may have one or more pins to receive and to send various signals and/or voltages and currents.
  • the cap 118a is removably connected to the terminal 118b, and is configured to protect the one or more pins of the terminal 118b from being damage by sources, such as dust, water, or impacts from objects, in an environment outside the chassis 102.
  • the terminal 118b may female terminal.
  • the terminal H8b of each of the input 122, the first interface 120, and the second interface 116 is configured to interface with a cable to either supply or receive power, based on whether the cable is interfaced with the input 122, the first interface 120, or the second interface 116.
  • the terminal of the input 122 is configured to interface with a cable to receive voltage and current from an outside power source.
  • the terminal of the second interface is configured to interface with a cable to supply voltage and current to a night sight 222.
  • the system 100 weighs 15-25 pounds.
  • the system 100 is configured to interface with a M220 TOW 2 weapon system. In other embodiments, the system 100 is configured to interface with other weapon systems.
  • the input 122 is a connector configured to receive power from either an alternating current (AC) power source, such as an AC power outlet, and/or direct current (DC) power source, such as an automobile cigarette lighter receptacle.
  • AC alternating current
  • DC direct current
  • the AC power being received from the AC power source, is converted to DC power before entering the system 100.
  • the AC power source may be connected to the input 122 via an AC to DC adapter, in which the AC to DC adapter converts the power from AC power to DC power before entering the system 100.
  • the AC to DC adapter may be, for example, a commercial off the shelf (COTS) AC/DC adapter.
  • the COTS AC/DC adapter is configured to convert 100V-240V of AC power at 50-60Hz to 24V of conditioned DC power before entering the chassis 102.
  • the first interface 120 is a connector configured to provide power to the MGS.
  • the first interface 120 may be configured with three outputs each being configured to provide power having different voltages to the MGS.
  • a first output may provide power at or about 24 volts (V).
  • V voltage
  • a second output may provide power at or about a plus 50V.
  • the second output may provide power at plus 50V, and may fluctuate between 48V to 56V with maximum loads.
  • a third output may provide power at or about a minus 50V.
  • the third output may provide power at minus 50V, and may fluctuate between minus 48V to minus 56V with maximum loads.
  • the three outputs of the first interface 120 are configured to provide power at their respective voltages simultaneously.
  • the three outputs of the first interface 120 are configured to provide power at their respective voltages based on the operations of the MGS.
  • the second interface 116 is a connector configured to provide power to a night sight.
  • the second interface 116 may be configured with two outputs each being configured to provide power having different voltages to the night sight.
  • a first output may provide power at or about 16.8V.
  • the first output may provide power at 16.8V, and may fluctuate between 17.1 V and 16.1 V with maximum loads.
  • a second output may provide power at or about 4.8V.
  • the second output may provide power at 4.8V having a +/- 0.3 V line regulation with maximum loads.
  • the two outputs of the second interface 116 are configured to provide power at their respective voltages simultaneously.
  • the two outputs of the second interface 116 are configured to provide power at their respective voltages based on the operations of the night sight.
  • the system 100 includes a switch 108.
  • the switch 108 may be an ON/OFF switch, for example, a toggle switch. When the switch 108 is turned ON, the switch 108 may be configured to have both the first interface 120 and the second interface 116 provide power at their respective output voltages to the MGS and the night sight, respectively. When the switch 108 is turned OFF, the switch 108 may be configured to have both the first interface 120 and the second interface 116 stop providing power to the MGS and the night sight respectively.
  • the system 100 automatically begins to charge the battery packs l24a and l24b of the system 100.
  • the battery packs l24a and l24b may be rechargeable lithium ion batteries.
  • the battery packs l24a and l24b may also be, in a non-limiting example, BB-2590 type batteries each having two 14.4V nominal sections configured in parallel, thereby two charging chips, such as charging chip 226a, 226b, 228a, and 228b, are provided for each battery pack l24a and l24b.
  • the system 100 is configured to charge battery packs l24a and l24b using either AC or DC outside power sources. In some embodiments, the system 100 charges the battery packs l24a and l24b with 100W or about 100W.
  • the system 100 charges the battery packs l24a and l24b at power values based on the design of the system 100.
  • the system 100 is configured to charge the battery packs l24a and l24b at different rates.
  • the system 100 may be set in a trickle or float charge setting, in which the system 100 charges the battery packs l24a and l24b using a low current value and which stops the charging process when the state of charge for the battery packs l24a and l24b is at full capacity.
  • the system 100 may be set in a normal charge setting, in which the system 100 charges the battery packs 124a and 124b using a typical current value for charging the battery packs.
  • the system 100 may be set in a fast charge setting, in which the system 100 charges the battery packs 124a and 124b using a high current value.
  • the charge settings of the system 100 may be set via switch 114.
  • the system 100 includes a display 112 and a switch 114.
  • the display 112 may be a state-of-charge display (SOC) to display the status of the system 100.
  • SOC state-of-charge display
  • the display 112 may display the amount of power remaining in the one or more battery cells, for example the battery cell 124a and the battery cell 124b, of the system 100, or the display 112 may display the average of the 4 string capacity levels of the charge battery packs 124a and 124b.
  • the display 122 may the display 112 may display a“no fault” status, which indicates that the system 100 is operating without errors.
  • the display 112 may display an indicator that charging of the battery packs 124a and 124b is enabled, an indicator of the internal temperature of the system 100, and/or one or more battery string voltages.
  • the switch 114 is configured to provide one or more functions of the system 100. For example, if the switch 114 receives a press type input from a user, the display 112 may display the status of the system 100. In another example, if the switch 114 receives a press and hold type input from a user, the display 112 may cycle through various brightness levels for a user to select. In yet another example, if the switch 114 receives a press and hold type input for a predetermined amount of time, such as 15 seconds, from a user, the system 100 may reset.
  • FIG. IB illustrates a perspective view of an inner portion 129 of the system 100 of FIG. 1A, according to one or more embodiments of the present disclosure.
  • FIG. 1C illustrates a perspective view of the system 100 of FIG. 1 A in an unassembled configuration, according to one or more embodiments of the present disclosure.
  • the system 100 includes a heat sink 106 on the upper wall 103 of the chassis 102.
  • the heat sink 106 is configured to thermally conduct and convect heat out of the chassis 102, in which the heat may be generated by one or more components within the inner portion 129 of the chassis 102.
  • the heat sink 106 may be positioned near the center of the upper wall 103.
  • the heat sink 106 includes multiple heat sink protrusions 133. In other embodiments, the heat sink 106 includes the multiple heat sink protrusions 133 and handle risers 131.
  • the multiple heat sink protrusions 133 and the handle risers 131 are casted with the chassis 102, such that the multiple heat sink protrusions 133 and the handle risers 131 are integrally formed with the chassis 102.
  • the handle rises 131 may be connected by a crossbar, in which the handle risers 131 and the cross bar form the handle 104.
  • the heat sink 106 has an overall size at or about 6.75 inches wide by 3 inches long.
  • the chassis receptacle may cover each wall of the chassis 102, except for the upper wall 103 that is exposed to an outside environment. For example, the upper wall 103 is exposed to moving air.
  • heat generated by various components of the inner portion 129 travels through the heat sink 106 and out to the outside environment.
  • Each of the multiple heat sink protrusions 133 extend away from the upper wall 103.
  • a heat sink fin such as heat sink l33a, may be sized at or about 3 inches long by 0.5 inches high by 0.09 inches thick.
  • the multiple heat sink protrusions 133 may be spaced at or about 0.22 inches on center.
  • the heat sink 106 includes 27 heat sinks l33a.
  • a set of two heat sinks l33a may be positioned outside of each of the handle risers 131, and the remaining 23 heat sinks l33a may be positioned in between both of the handle risers 131.
  • the heat sink 106 is configured to displace an amount of heat ranging from at or about 6 watts (W) to at or about 42W, based on whether the night sight and/or MGS is discharging the system 100 or the input 122 is conditioning and converting power to 24V to charge the battery packs l24a and l24b and/or supply power to first interface 120 and/or the second interface.
  • W watts
  • an access cover 136 forms a removably connected wall of the chassis 102.
  • the access cover 136 maybe fastened to the chassis 102 with fasteners 138, such as screws.
  • the fasteners 138 are captive fasteners, such that the fasteners 138 remain with the access cover 136 when the fasteners 138 are unfastened from the chassis 102.
  • a user may remove the access cover 136 to access the inner portion 129 of the chassis 102.
  • the inner portion 129 of the chassis 102 includes at least one of a first board 130, a second board 132, a third board 134, and one or more battery packs, such as battery pack l24a, and battery pack l24b.
  • the first board 130 may be located on the upper wall 103.
  • the second board 132 may be located on the rear wall 105.
  • the third board 134 may be located on either side wall l07a or side wall l07b. It should be noted that for purposes of discussion, the embodiments discussed herein are discussed in terms of the third board 134 being located on the side wall l07b; however, these features are equally applicable for the cases in which the third board 134 is located on the side wall 107 a.
  • the boards may each be fastened to its respective wall via fasteners, such as fasteners from mounting into printed circuit boards.
  • the battery pack l24a and battery pack l24b may be positioned in front of the second board 132 and the third board 134, and on the lower wall 111 of the chassis 102.
  • a support bracket l28b may be positioned offset on a portion of the second board 132.
  • the support bracket 128b may be fastened to the rear wall 105 via fasteners that extend through the support bracket l28b and the second board 132 and that fasten into the rear wall 105.
  • the support bracket l28b may have one or more battery packs receiving portions l28b configured to separate the battery pack, such as battery pack l24b, from the second board 132.
  • the battery pack receiving portion l28b may include one or more battery pack positioning tabs l28d configured to position the respective battery pack within the chassis 102.
  • the battery pack positioning tabs l28d may be located in at least one of a top edge, a right side edge, and a left side edge of the battery pack receiving portion l28b.
  • the battery pack positioning tabs l28d may be configured to prevent the one or more battery packs from moving within the chassis 102, thereby protecting the first board 130, the second board 132, and/or the third board 134 from being damaged by the one or more battery packs.
  • the battery pack l24a and the battery pack l24b are electrically coupled to the second board 132.
  • the battery connector l26a may connect the second board 132 to the battery pack l24a, and the battery connector l26b connect the second board 132 to the battery pack l24b.
  • a battery strap l28a may surround one or more sides of battery pack l24a and/or one or more sides of battery pack l24b.
  • the battery strap l28a may be configured to prevent the battery connector l26a from disengaging from battery pack l24a and l24b.
  • the battery strap l28a may be positioned between the access cover 136 and the battery pack l24a and l24b preventing the battery strap from detaching from the battery packs.
  • the battery strap l28a may be configured to fasten to each battery connector l26a and l26b that are connected to the battery cell l24a and l24b, respectively, thereby connecting the battery cell l24a and battery cell l24a to the battery strap l28a.
  • the First board 130 and the second board 132 are electrically coupled to one another, and the second board 132 and the third board 134 are electrically coupled to one another.
  • at least two of the First board 130, the second board 132, and the third board 134 include press-fit connectors, in which one press-fit connector of one board is configured to connect with a press-fit connector of the other board.
  • the first board 130 may include one press-fit connector and the second board 132 may include another press-fit connector configured to receive the press-fit connector of the first board 130.
  • the first board 130 may include more than one press- fit connector, such as two connectors, configured to mate with the corresponding press-fit connectors, such as another two connectors, on the second board 132.
  • the press-fit connectors of the first board 130 and the second board 132 are configured to be mated together at a right angle.
  • the press-fit connectors may facilitate the transmission of data and electrical signals, such as currents and voltages, from one board to another and vice versa.
  • at least two of the first board 130, the second board 132, and the third board 134 include other connector systems configured to exchange data and/or electrical signals between at least two boards.
  • the second board 132 and the third board 134 may each have a terminal configured to mate with an end of a wiring harness, in which data and/or electrical signals are exchanged between the second board 132 and the third board 134 via the wires included with the wiring harness.
  • FIG. 2 illustrates an interconnect diagram 200 of the system 100 of FIG. 1 A, according to one or more embodiments of the present disclosure.
  • the first board 130, the second board 132, and the third board 134 include heat producing electrical components.
  • the heat producing electrical components may include at least a 24V DC/24V DC power converter 204, a 24V DC/16.8V DC power converter 206, a 24V DC/24V DC power converter 208, a 24V DC/4.8V DC power converter 214, a 24V DC/50 V DC power converter 218, a 24V DC/50 V DC power converter 220, at least one charging chip, such as charging chip 226a and charging chip 228a, for the battery pack l24a, and at least one charging chip, such as charging chip 226b and charging chip 228b, for the battery pack l24b.
  • the heat producing components are positioned on the first board 130, the second board 132, and the third board 134 within the chassis 102 to dissipate heat, generated by the heat producing components, through the heat sink 106 or into a wall of the chassis 102.
  • the first board 130 includes a 24V DC/24 V DC power converter 204, a 24V DC/16.8V DC power converter 206, and a 24V DC/24V DC power converter 208.
  • the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24 V DC power converter 208 may be positioned on the rear surface of the first board 130 facing the heat sink 106.
  • the first board 130 may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, the first board 130 may be easily replaced when one or more electronic components on the first board 130 becomes defective.
  • the first board 130 may include several removably connected boards, in which the one or more removably connected boards may include various electronic components of the first board 130 and at least one of the 24V DC/24 V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208.
  • the first board 130 may include two removably connected boards, in which one removably connected board includes the 24V DC/24V DC power converter 204 and the 24V DC/16.8V DC power converter 206, and in which the other removably connected board includes the 24V DC/24V DC power converter 208.
  • the removably connected boards may be electrically coupled to one another, thereby forming the first board 130.
  • the removably connected boards may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, a power converter may be easily replaced when the power converter becomes defective.
  • the 24V DC/24 V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208 are configured to be thermally interfaced with the heat sink 106.
  • a baseplate of the DC power converter transfers heat out of the DC power converter through the conductive baseplate and into a portion of the chassis 102, such as the heat sink 106, via a thermal paste or thermal pad.
  • the thermal paste or pad may have at least 5 W/mK thermal conductivity. That is, the heat generated by the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208 is directed towards the heat sink 106.
  • the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208 are the heat producing electrical components that have the highest heat producing potential.
  • the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208 may produce heat resulting in the highest temperature among the components in the system 100.
  • the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24V DC power converter 208 may produce the greatest amount of heat to be dissipated into the outside environment.
  • the 24V DC/24V DC power converter 204, the 24V DC/16.8V DC power converter 206, and the 24V DC/24 V DC power converter 208 produce at or about 70% of the total heat generated within the system 100.
  • the second board 132 includes charging chips 226a, 226b, 228a, and 228b, and 24V DC/4.8V DC power converter 214.
  • the charging chips 226a, 226b, 228a, and 228b are positioned on the rear surface of the second board 132 facing the rear wall 105.
  • the second board 132 may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, the second board 132 may be easily replaced when one or more electronic components on the second board 132 becomes defective.
  • the second board 132 may include several removably connected boards, in which the one or more removably connected boards may include various electronic components of the second board 132 and at least one of the charging chips 226a, 226b, 228a, and 228b, and 24V DC/4.8V DC power converter 214.
  • the second board 132 may include three removably connected boards, in which one removably connected board includes the charging chips 226a and 228a, another removably connected board includes the charging chips 226b and 228b, and a third removably connected board includes the 24V DC/4.8V DC power converter 214.
  • the removably connected boards may be electrically coupled to one another, thereby forming the second board 132.
  • the removably connected boards may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, a power converter may be easily replaced when the power converter becomes defective.
  • the charging chips 226a, 226b, 228a, and 228b may be configured to thermally interface with the rear wall 105, such that heat generated by one or more of the charging chips 226a, 226b, 228a, and 228b is thermally conducted into the chassis 102, in particular a portion the rear wall 105 or all of the rear wall 105.
  • each charging chip 226a, 226b, 228a, and 228b may each produce up to 2.5W of heat, thereby producing up to 10W of output heat.
  • the 24V DC/4.8V DC power converter 214 is positioned on the front surface of the second board 132 facing the access cover 136.
  • the 24V DC/4.8 V DC power converter 214 is configured to thermally interface with the volume of the chassis 102, that is, the space of the inner portion 129.
  • the 24V DC/4.8V DC power converter 214 is the heat producing electrical component that has the lowest heat producing potential.
  • the third board 134 includes the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220.
  • the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 may each produce up to 3W of heat.
  • the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 are positioned on a rear surface of the third board 134 facing either sidewall l07b.
  • the third board 134 may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, the third board 134 may be easily replaced when one or more electronic components on the third board 134 becomes defective.
  • the third board 134 may include several removably connected boards, in which the one or more removably connected boards may include various electronic components of the third board 134 and at least one of the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220.
  • the third board 134 may include two removably connected boards, in which one removably connected board includes the 24V DC/50V DC power converter 218, and in which the other removably connected board includes the 24V DC/50V DC power converter 220.
  • the removably connected boards may be electrically coupled to one another, thereby forming the first board 130.
  • the removably connected boards may be configured to be removed and connected to the system 100. By being able to be removed and connected to the system 100, a power converter may be easily replaced when the power converter becomes defective.
  • the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 may be configured to thermally interface with the sidewall l07b, such that heated generated by at least one of the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 is thermally conducted into the chassis 102, in particular the sidewall l07b.
  • the heat potential generated by the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 is less than the heat potential generated by the charging chips 226a, 226b, 228a, and 228b.
  • the first board 130 is configured to receive DC power from an external power source.
  • an AC/DC adapter 202 externally converts the AC power to DC power before entering the chassis 102 at input FI10.
  • the AC/DC adapter 202 may be, for example, a COTS AC/DC adapter.
  • the AC/DC adapter 202 is configured to convert the AC power into a converted 24V of DC power.
  • the first board 130 is configured to receive 10V-36V of DC power at input FI7.
  • the 24V DC/24V DC power converter 204 of the first board 130 is configured to internally convert, at the first board 130, the 10V-36V of DC power to a converted 24V of DC power.
  • input 122 includes both FI10 and input FI7.
  • the terminal D38999/24 WD97PN of input 122 may include 12 contacts, in which 8 contacts are 20 gauge and 4 contacts are 16 gauge. The 4 contacts at 16 gauge may be used for DC input power, and 4 contact at 20 gauge are used for input power from an AC/DC adapter.
  • the converted AC and DC power is provided to a 24V power bus configured to distribute and receive power from the second board 132 and the third board 134.
  • the converted AC and DC power can be used to charge the battery packs l24a and l24b, can provide power to the night sight 222, and/or can provide power to the MGS 224.
  • the second board 132 is configured to receive at input SI3 a converted 24V of DC power from the first board 130 at output FI05. In some embodiments, the second board 132 is configured to use the converted 24V of DC power to charge at least one of the battery strings within battery pack l24a or l24b and to supply power to operate the night sight 222 and the MGS 224.
  • the converted AC and DC power can be used to operate the night sight 222 and the MGS 224 without using power from the battery packs l24a and l24b.
  • a switch 21 la is closed, thereby routing power to the night sight 222 and the MGS 224.
  • switch 21 la is closed.
  • the second board 132 receives at input SI3 the converted 24V DC power from output FI05.
  • the converted 24V DC power passes to a current sensor 210 provided on the second board 132.
  • current sensor 210 is provided to, for the cases in which the first board 130 receives input power at either FI10 or FI7, prevent the system 100 from charging the battery packs l24a and l24b at the same time as providing power to the night sight 222 and the MGS 224.
  • FIG. 3 illustrates a schematic 300 of the current sensor 210 of the interconnect diagram 200 of FIG. 2, according to one or more embodiments of the present disclosure.
  • the current sensor 210 is configured to sense the amount of power being output from the system 100. If the amount of power being output from the system 100 exceeds a threshold, then the current sensor 210 sends a signal I to a microcontroller 302 to disable charging the battery cells l24a and l24b for a duration of time corresponding to the length of time necessary to fire a missile.
  • the microcontroller 302 sends a signal O to the charging chips l26a, l26b, l28a, and l28b to disable charging.
  • the system 100 is configured to automatically start recharging the battery packs l24a and l24b.
  • the microcontroller 302 may send a signal to the charging chips l26a, l26b, l28a, and l28b to enable charging.
  • the system 100 is configured to disable charging the battery cells l24a and l24b based on the duration of time from when a missile is fired to impact of the missile on a target.
  • the first board is configured to provide 16.8V of DC power to the night sight 222
  • the second board is configured to provide 4.8V of DC power to the night sight 222.
  • the converted 24V DC power passes to the 24V DC/16.8V DC power converter 206, the 24V DC/24V DC power converter 208, and the 24V DC/4.8V DC power converter 214.
  • the 24V DC/16.8V DC power converter 206 is configured to convert the converted 24V DC power, provided from the 24V DC/24V DC power converter 204 or the AC/DC adapter 202, to 16.8V of DC power. Thereafter, having converted the 24V converted DC power, the first board 130 provides 16.8V DC to the night sight 222.
  • the 24V DC/4.8 V DC power converter 214 is configured to convert the converted 24V DC power, provided from the 24V DC/24V DC power converter 204 or the AC/DC adapter 202, to 4.8V of DC power. Thereafter, having converted the 24V converted DC power, the second board 132 provides 4.8VDC to the night sight 222.
  • the first board 130 is configured to provide, in conjunction with the capacitor circuit 216 provided on the second board 132, 24V of DC power to the MGS 224; and the second board 132 is configured to provide the converted 24 V of DC power to the 24 V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 provided on the third board 134, in which the third board 134 is configured to provide plus 50V and minus 50V of DC power to the MGS 224.
  • the converted 24V DC power passes from the second board 132 to the 24V DC/50V DC power converter 218 and the 24V DC/50V DC power converter 220 provided on the third board 134.
  • the 24V DC/50V DC power converter 218 is configured to convert the converted 24V DC power, provided from the 24V DC/24V DC power converter 204 or the AC/DC adapter 202, to 50V of DC power. Thereafter, having converted the 24V converted DC power, the third board 134 provides 50VDC to the MGS 224.
  • the 24V DC/50V DC power converter 220 is configured to convert the converted 24V DC power, provided from the 24V DC/24V DC power converter 204 or the AC/DC adapter 202, to 50V of DC power. Thereafter, having converted the 24V converted DC power, the third board 134 provides 50VDC to the MGS 224.
  • the converted 24V DC power passes from the second board 132 to the 24V DC/24V DC power converter 208 provided on the first board 130.
  • the 24V DC/24V DC power converter 208 can be a switching regulator and/or a 24V DC/24 V DC power converter.
  • the 24V DC/24 V DC power converter 208 may require, for example, 20-40 seconds of output time having a running current at 2.6 A +/- 5% and three 105 millisecond maximum duration pulses. That is, the 24V DC/24V DC power converter 208 may operate for about 20-40 seconds while a missile is being fired. During the first pulse, there is, for example, a 14A current spike.
  • a second current spike for example, occurs at 11 A.
  • a third spike for example, occurs at 11 A after the second current spike.
  • 24 V DC/24 V power converted 208 may run current at different amperages and different durations of maximum duration pulses to accommodate duration output times that are shorter and/or longer in duration than 20-40 seconds.
  • the capacitor circuit 216 may be configured to store the power required by the MGS and rapidly discharge and restore the power for follow-on sequences.
  • the 24V DC/24V DC power converter 208 is configured to initially provide the generated power to the capacitor circuit 216 in order to increase the high current at 24V as required by the MGS 224.
  • the high current may be, for example, 14A spikes at 105 milliseconds, in which the spikes are no greater than 1.5 seconds apart.
  • FIG. 4 illustrates a schematic 400 of the 24V DC/24V DC power converter 208 and the capacitor circuit 216 of the interconnect diagram 200 of FIG. 2, according to one or more embodiments of the present disclosure.
  • the initial output 412 of the 24V DC/24 V DC power converter is provided to the capacitor circuit 216.
  • the capacitor circuit 216 may include a current limiting resistor 404, capacitors 406, Zener diodes 410, and a power diode 408.
  • the current limiting resistor 404 is configured to prevent the 24V DC/24V DC power converter 208 from overloading during charging of the capacitor bank 414.
  • the capacitors 406 each have an upper voltage limit of 2.7 to 3 volts and an electrical capacitance sufficient to provide the required transient currents. In some examples, ten 15 Farad capacitors 406 may be configured in series to one another. In one or more embodiments, the Zener diodes 410 are configured to protect against overvoltage in cases where the capacitance of the capacitors 406 are different.
  • the initial output 412 passes to a current limiting resistor 404.
  • the current passing through the current limiting resistor 404 reduces to at or about zero current.
  • the capacitor bank 414 is charged.
  • the current flows from the 24V DC/24V DC power converter 208 to the capacitor circuit 216.
  • each capacitor 406 charges to at or about 2.4V DC, thereby outputting 24V DC back to the 24V DC/24 V DC power converter 208.
  • the 24V DC/24 V DC power converter 208 passes the power having a converted 24V DC power to the MGS 224.
  • the second board 132 includes an area to route heavier gauge wiring through the second board 132 at input SI5 and output S07 to the MGS 224.
  • the heavier gauge wiring may be used to supply the converted 24V DC power from the 24V DC/24V DC power converter 208 to the MGS 224.
  • the voltage may increase more quickly than the other capacitors 406, thereby creating risk of damaging the capacitor 406 if the voltage exceeds the upper limit of 2.7 V DC.
  • the voltage of the capacitor 406 nears the upper limit, current flows through the parallel Zener diode 410, thereby limiting the capacitor 406 to 2.7V DC while still allowing current to flow to the remaining capacitors 406 in the capacitor bank 414.
  • a high transient load 402 is configured to draw power.
  • the 24V DC/24V DC power converter 208 decreases the output voltage, and the power diode 408 begins to conduct based on the capacitor voltage of the capacitor bank 414 being high than the output voltage.
  • power diode 408 is configured to maintain the output voltage of the capacitor bank 414 flowing through the power diode 408 at or about 24V DC.
  • the current of the capacitor bank 414 does not flow until the output voltage drops to at or about 23.5V DC.
  • the capacitor bank 414 when the output voltage decreases to 23.5V DC, the capacitor bank 414 is configured to discharge, based on transient duration to a lower voltage. For the cases in which the capacitor bank 414 is discharged, that is, during the discharge transient, the current flows from the capacitor circuit 216 to the 24V DC/24V DC power converter 208 via the power diode 408. Thereafter, the capacitor bank 414 is configured to recharge when the transient duration is complete.
  • switch 21 lb is closed, thereby routing power from battery cells l24a and l24b to the night sight 222 and the MGS 224.
  • a microcontroller can be used to open and close switches 21 la and 21 lb.
  • a signal is sent to the microcontroller instruction the microcontroller to close switch 21 la and open switch 21 lb.
  • the switch 108 is turned OFF, a signal is sent to the microcontroller instruction the microcontroller to open switch 21 la and close switch 21 lb.
  • battery packs l24a and l24b are configured to provide the required power to the night sight 222 and the MGS 224.
  • the power flows from battery packs l24a and l24b to the 24V DC/4.8V DC power converter 214, 24V DC/16.8V DC power converter, and thereafter to the night sight 222 in a similar manner as the AC or DC power supplied from an outside source after said power passes current sensor 210.
  • the power flows from battery packs l24a and l24b to the 24V DC/24V DC power converter 208, the capacitor circuit, and thereafter to the MGS 224 and to the 24V DC/50 V DC power converter 218 and the 24V DC/50V DC power converter 220, and thereafter to the MGS 224 in a similar manner as the AC or DC power supplied from an outside source after said power passes current sensor 210.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Thermal Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un système de puissance comprenant une baie conçue pour loger une première carte, une deuxième carte et une troisième carte, dans laquelle les cartes sont électriquement couplées les unes aux autres. La première carte est conçue pour recevoir de la puissance et pour délivrer de la puissance à une première tension et à une seconde tension. La deuxième carte est conçue pour recevoir de la puissance de la première carte ou d'au moins une batterie interne couplée électriquement à la deuxième carte et pour délivrer de la puissance faisant intervenir au moins deux tensions. La troisième carte est conçue pour recevoir de la puissance de la deuxième carte et pour délivrer de la puissance à deux tensions. Les cartes comprennent un ou plusieurs convertisseurs conçus pour convertir la puissance. Le ou les convertisseurs sont interfacés thermiquement avec une ou plusieurs parties de la baie de façon à conduire la chaleur dans une partie respective de la baie.
PCT/US2018/054173 2018-10-03 2018-10-03 Système de puissance intégré Ceased WO2020072048A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18936174.4A EP3861839A4 (fr) 2018-10-03 2018-10-03 Système de puissance intégré
PCT/US2018/054173 WO2020072048A1 (fr) 2018-10-03 2018-10-03 Système de puissance intégré
JP2021544090A JP7250150B2 (ja) 2018-10-03 2018-10-03 一体型電力システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2018/054173 WO2020072048A1 (fr) 2018-10-03 2018-10-03 Système de puissance intégré

Publications (1)

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WO2020072048A1 true WO2020072048A1 (fr) 2020-04-09

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EP (1) EP3861839A4 (fr)
JP (1) JP7250150B2 (fr)
WO (1) WO2020072048A1 (fr)

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US20090288324A1 (en) * 2007-10-11 2009-11-26 Ashbury International Group, Inc. Tactical firearm systems and methods of manufacturing same
EP2348800A1 (fr) 2010-01-26 2011-07-27 Portwell Inc. Dispositif d'alimentation électrique redondant
US8848409B2 (en) * 2011-09-08 2014-09-30 Abb Technology Ag Multilevel converter and a control method for operating a multilevel converter
US20140361671A1 (en) * 2013-06-07 2014-12-11 Apple Inc. Computer internal architecture
US20160165716A1 (en) 2014-12-03 2016-06-09 Omron Automotive Electronics Co., Ltd. Power conversion apparatus
EP3163986A1 (fr) 2015-10-29 2017-05-03 Delta Electronics (Shanghai) Co., Ltd. Dispositif de conversion de puissance

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JP2001286146A (ja) * 2000-03-31 2001-10-12 Sanyo Electric Co Ltd 電源装置
JP2004135397A (ja) * 2002-10-08 2004-04-30 I-O Data Device Inc 電源装置および電源分配用の直流電圧変換装置
JP2010220439A (ja) * 2009-03-18 2010-09-30 Mitsubishi Electric Corp 電源システム
JP5155914B2 (ja) * 2009-03-19 2013-03-06 日立オートモティブシステムズ株式会社 制御ユニット
TWM381826U (en) * 2009-12-31 2010-06-01 Portwell Inc Fault-tolerant power supply unit
US20140267389A1 (en) * 2013-03-14 2014-09-18 Exelis Inc. Night Vision Display Overlaid with Sensor Data
JP2016063713A (ja) * 2014-09-22 2016-04-25 株式会社ノーリツ パワーコンディショナ
JP6520325B2 (ja) * 2015-04-06 2019-05-29 株式会社デンソー 電子制御装置

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Publication number Priority date Publication date Assignee Title
US20090288324A1 (en) * 2007-10-11 2009-11-26 Ashbury International Group, Inc. Tactical firearm systems and methods of manufacturing same
EP2348800A1 (fr) 2010-01-26 2011-07-27 Portwell Inc. Dispositif d'alimentation électrique redondant
US8848409B2 (en) * 2011-09-08 2014-09-30 Abb Technology Ag Multilevel converter and a control method for operating a multilevel converter
US20140361671A1 (en) * 2013-06-07 2014-12-11 Apple Inc. Computer internal architecture
US20160165716A1 (en) 2014-12-03 2016-06-09 Omron Automotive Electronics Co., Ltd. Power conversion apparatus
EP3163986A1 (fr) 2015-10-29 2017-05-03 Delta Electronics (Shanghai) Co., Ltd. Dispositif de conversion de puissance

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Title
See also references of EP3861839A4

Also Published As

Publication number Publication date
EP3861839A1 (fr) 2021-08-11
JP2022510497A (ja) 2022-01-26
JP7250150B2 (ja) 2023-03-31
EP3861839A4 (fr) 2022-06-01

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