US20060261783A1 - Electronic battery module (EBM) with bidirectional DC-DC converter - Google Patents
Electronic battery module (EBM) with bidirectional DC-DC converter Download PDFInfo
- Publication number
- US20060261783A1 US20060261783A1 US11/134,999 US13499905A US2006261783A1 US 20060261783 A1 US20060261783 A1 US 20060261783A1 US 13499905 A US13499905 A US 13499905A US 2006261783 A1 US2006261783 A1 US 2006261783A1
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- United States
- Prior art keywords
- rechargeable
- power supply
- battery
- bidirectional
- terminals
- Prior art date
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates generally to rechargeable DC power supplies having an integral DC-DC converter.
- Rechargeable DC power supplies are useful in many types of applications. For example, cellular towers and other stationary applications use rechargeable DC power supplies as an uninterruptible power source. The rechargeable DC power supplies provide backup power during a main grid outage.
- a direct current (DC) power supply 2 receives power from a main grid 4 .
- the DC power supply 2 generally provides power to a load 6 and to a plurality of rechargeable DC power supplies 8 - 1 , 8 - 2 , . . . , 8 -N, referred to collectively as rechargeable DC power supplies 8 .
- Each rechargeable DC power supply 8 includes a corresponding battery 10 and charging control circuit 12 .
- the battery 10 provides a voltage that is less than a load voltage needed by the load 6 . If the DC power supply 2 becomes inoperative, the series-connected rechargeable DC power supplies 8 provide the load voltage. However, because the rechargeable DC power supplies are connected in series, the load 6 may not receive sufficient voltage if one of more of the rechargeable DC power supplies 8 is in a discharged or open circuit condition.
- a telecommunication switching station includes telecommunication equipment, a DC power supply having an output connected to the telecommunication equipment, and a plurality of rechargeable DC power supplies connected in parallel with the output of the DC power supply.
- Each DC power supply includes a pair of power supply terminals, a rechargeable battery, and a bidirectional DC-DC converter module connected between the rechargeable battery and the pair of power supply terminals.
- the DC power supply provides power to the telecommunication equipment and recharges the plurality of rechargeable DC power supplies.
- the plurality of rechargeable DC power supplies serve as a back-up for the DC power supply.
- each of said rechargeable DC power supplies further includes a control module that communicates an enable signal to a respective one of said bidirectional DC-DC converter modules.
- the respective bidirectional DC-DC converter module selectively creates an open circuit condition between said pair of power supply terminals in accordance with said enable signal.
- each of said rechargeable DC power supplies further includes a data communication port in communication with a respective one of said control modules.
- Each of said rechargeable DC power supplies can further includes a battery temperature sensor positioned in proximity of a respective one of said rechargeable batteries and providing a battery temperature signal to a respective one of said control modules.
- Each battery temperature sensor is positioned inside of said respective one of said rechargeable batteries.
- each rechargeable DC power supplies further includes a current sensor providing a signal to a respective one of said control modules and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules.
- the signal can be indicative of a magnitude and direction of current flow through said respective one of said rechargeable batteries.
- each of the rechargeable DC power supplies further includes a switch having a control input and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules and wherein said switch opens and closes in response to said control input.
- each of said control modules can communicate a desired output voltage signal to said respective one of said bidirectional DC-DC converter modules.
- the respective one of said bidirectional DC-DC converter modules regulates a load voltage across a respective one of said pair of power supply terminals in accordance with said desired output voltage signal.
- a rechargeable DC power supply includes a housing including an interior, an exterior, and an integral heat sink including a heat absorbing surface formed in said interior and a heat dissipating surface formed in said exterior.
- the rechargeable DC power supply includes a rechargeable battery having battery terminals positioned in said interior, power supply terminals positioned at said exterior of said housing, and a first printed circuit board (PCB) assembly including a bidirectional DC-DC converter module connected between said battery terminals and said power supply terminals.
- the first PCB assembly is in coplanar contact with said heat absorbing surface.
- a battery tray is connected to said housing and contains said rechargeable battery.
- the rechargeable battery can include a plurality of rechargeable cells having cell terminals.
- a second PCB assembly can be positioned on said cell terminals and include PCB traces connecting said cell terminals to form said battery terminals.
- the housing can nest on said rechargeable battery.
- the rechargeable DC power supply can include a battery temperature sensor positioned in proximity of said rechargeable battery and connected to said second PCB assembly.
- the battery temperature sensor can be located inside of said battery.
- a control module is positioned in the interior of said housing and has a data communication port.
- a connector in communication with said data communication port can be accessible from said exterior of said housing.
- a rechargeable DC power supply system for providing power to a DC load includes a plurality of rechargeable DC power supplies.
- Each rechargeable DC power supply includes a rechargeable battery, a pair of power supply terminals, a bidirectional DC-DC converter module connected between said rechargeable battery and said power supply terminals, and a controller module receiving at least one signal indicative of a condition of said rechargeable battery and communicating an enable signal to said corresponding bidirectional DC-DC converter module in accordance with said condition.
- Said power supply terminals of said plurality of rechargeable DC power supplies and said load are connected by parallel connections.
- One of said enable signals causes a respective one of said corresponding rechargeable DC power supplies to electrically connect and disconnect from said load.
- Each of said rechargeable DC power supplies can include a data communication port that communicates data indicative of said condition.
- FIG. 1 is a functional block diagram of a load connected to a DC power supply and series-connected rechargeable DC power supplies according to the prior art
- FIG. 2 is a functional block diagram of a load connected to a DC power supply and parallel-connected rechargeable DC power supplies;
- FIG. 3 is a functional block diagram of a rechargeable DC power supply including a bidirectional DC-DC converter
- FIG. 4 is an exploded view of a rechargeable DC power supply
- FIG. 5 is a perspective view of the rechargeable DC power supply of FIG. 4 ;
- FIG. 6 is a method of operating a rechargeable DC power supply.
- module and/or device refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- ASIC application specific integrated circuit
- processor shared, dedicated, or group
- memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality.
- the same reference numerals will be used to identify similar elements.
- the rechargeable DC power supplies 14 include corresponding positive 16 and negative 18 power supply terminals that are connected in parallel.
- Each rechargeable DC power supply 14 has a corresponding rechargeable battery 20 and a bidirectional DC-DC converter module 22 connected between the battery 20 and the positive 16 and negative 18 power supply terminals.
- a battery voltage of each battery 20 can be less than a DC load voltage needed by a load 24 .
- loads include, by way of non-limiting example, telecommunication equipment including multiplexers and/or switching circuitry, cellular communications transmitters and/or receivers, and electric and hybrid electric vehicles.
- the bidirectional DC-DC converter modules 22 convert the battery voltage to the load voltage and vice versa.
- the battery voltage is about 12V and the load voltage is between about 24V and 48V.
- the load 24 connects to the positive 16 and negative 18 power supply terminals.
- a main grid 26 provides power to a DC power supply 28 .
- the DC power supply 28 has positive and negative outputs connected to the load 24 and to the positive 16 and negative 18 power supply terminals.
- the main grid 26 can be an AC line voltage, such as provided by a public electric utility, or a DC line voltage such as may be provided by an alternative energy source such as solar cells and/or generators.
- the DC power supply 28 provides power to operate the load 24 and to recharge the batteries 20 .
- the bidirectional DC-DC converter modules 22 reduce the load voltage to the battery voltage and regulate a charging current provided to the batteries 20 .
- the rechargeable DC power supplies 14 provide power to operate the load 24 .
- the bidirectional DC-DC converter modules 22 increase the battery voltage to the load voltage.
- the rechargeable battery 20 has at least one rechargeable cell 30 , such as, by way of non-limiting example, nickel-metal hydride, nickel-cadmium, lithium-ion, and/or lead-acid cells.
- the rechargeable cells 30 can connect in series, parallel, or series-parallel.
- a battery temperature sensor 32 can be positioned in proximity of the battery 20 . In some embodiments, the temperature sensor 32 is positioned between two of the cells 30 and near a center of mass of the battery 20 . By way of non-limiting example, the battery temperature sensor 32 can be a thermistor having a negative temperature coefficient.
- a current sensor 34 can connect between a positive battery terminal 36 and a positive module terminal 38 of the bidirectional DC-DC converter module 22 .
- the current sensor 34 provides a current signal 40 indicative of a magnitude of battery current flowing through the battery 20 .
- the current signal 40 also provides an indication of a direction of the battery current.
- First mating connectors 42 - 1 and 42 - 2 referred to collectively as the first connector 42 , can be used between the positive battery terminal 36 and the current sensor 34 .
- the first connector 42 facilitates installation and removal of the battery 20 .
- a switch 44 selectively connects a negative battery terminal 46 to a negative module terminal 48 of the bidirectional DC-DC converter module 22 .
- the switch 44 has a switch control input 50 that controls whether the switch 44 is open or closed.
- the switch 44 can be a transistor, electromechanical relay, or solid-state relay.
- Second mating connectors 52 - 1 and 52 - 2 referred to collectively as the second connector 52 , can be used between the negative battery terminal 46 and the switch 44 to facilitate installation and removal of the battery 20 .
- the DC-DC converter module 22 can include the current sensor 34 and/or the switch 44 .
- a control module 54 receives various signals indicative of voltages and current in the rechargeable DC power supply 14 .
- a battery temperature input 56 connects to the battery temperature sensor 32 .
- a battery voltage input 58 connects to the positive battery terminal 36 and the negative battery terminal 46 .
- a terminal voltage input 60 connects to the positive power supply terminal 16 and the negative power supply terminal 18 .
- a supply voltage input 62 connects to the positive module terminal 38 and the negative module terminal 48 .
- a current sense input 64 connects to the current signal 40 .
- the control module 54 senses the load voltage through the terminal voltage inputs 60 .
- the control module 54 also provides a number of output signals.
- An over-voltage protection (OVP) output 66 connects to the switch control input 50 .
- a current limit signal 68 , a desired output voltage signal 70 , and an enable signal 72 connect to the bidirectional DC-DC converter module 22 .
- the bidirectional DC-DC converter module 22 uses the current limit signal 68 to limit the battery current.
- the bidirectional DC-DC converter module 22 uses the desired output voltage signal 70 to establish the load voltage at the positive 16 and negative 18 power supply terminals.
- the desired output voltage signal 70 can indicate that the load voltage should be set to a value between about 24V and 48V.
- the bidirectional DC-DC converter module 22 uses the enable signal 72 to turn the positive 16 and negative 18 power supply terminals on and off.
- the positive 16 and negative 18 power supply terminals are turned on during normal operation. However, if the rechargeable DC power supply 14 is supposed to be providing power to the load 24 and some condition prevents it from doing so, such as the battery 26 is discharged, then the controller 54 can use the enable signal 72 to turn off the positive 16 and negative 18 power supply terminals. This electrically disconnects the rechargeable DC power supply 14 from the load 24 and also prevents it from undesirably discharging the other rechargeable DC power supplies 14 .
- a CPU 74 uses the inputs and outputs of the control module 54 .
- the CPU 74 executes a computer program stored in a read-only memory (ROM) 76 .
- the ROM 76 can include other types of non-volatile computer memory, such as, by way of non-limiting example, flash, EPROM, and/or EEPROM.
- the CPU 74 stores variables, such as the load voltage, battery voltage, and battery current, in a random access memory (RAM) 78 .
- the control module 54 can also have a bidirectional data communication port 80 in communication with the CPU 74 .
- a user can access the data communication port 80 and interact with the CPU 74 to read the variables from the RAM 78 and/or change the computer program stored in the ROM 76 .
- the data communication port 80 can be serial, parallel, RS-232, controller area network (CAN), and/or Ethernet.
- the bidirectional DC-DC converter module 22 can be assembled on a first printed circuit board (PCB) 82 .
- the first PCB 82 has at least one planar area on an upper surface 84 that comes into coplanar contact with a planar heat absorbing surface 86 located on an interior of a housing 88 .
- the region of coplanar contact between the planar area of the first PCB 82 and the heat-absorbing surface 86 can contain a material that enhances thermal conductivity, such as a thermal compound or a thermal pad.
- One or more screws 90 can engage the housing 88 and bias the planar area of the first PCB 82 towards the heat-absorbing surface 86 .
- the heat-absorbing surface 86 can include one or more recesses 92 that accommodate components positioned on the upper surface 84 .
- An exterior of the housing 88 can include a heat-dissipating portion 94 , such as fins, pins, fluid channels, or other structure to dissipate heat from the housing 88 .
- Openings 96 formed in a terminal plate 98 receive the positive and negative power supply terminals 16 , 18 .
- the terminal plate 98 should be formed of an insulating material to prevent the positive and negative power supply terminals 16 , 18 from shorting together.
- the terminal plate 98 can be formed from a conductive material and insulators can be positioned in the openings 96 between the positive and negative power supply terminals 16 , 18 and the terminal plate 98 .
- the housing 88 has an opening 100 that receives the terminal plate 98 and allows the positive and negative power supply terminals 16 , 18 to connect to the first PCB 82 .
- the control module 54 can be assembled on a second PCB 102 .
- the second PCB 102 has a plurality of terminals 104 , such as plated-through holes, adapted to connect to positive and negative terminals located on a top 106 of each cell 30 .
- Circuit traces on the second PCB 102 connect the terminals 104 .
- the circuit traces make the connections between the cells 30 and provide the positive and negative battery terminals 36 , 46 .
- An arrangement of the circuit traces depends on whether the battery 20 includes cells 30 connected in a series, parallel, or series-parallel manner.
- Fasteners, such as screws 108 secure the connection between the terminals 104 and the terminals of each cell 30 .
- the terminals 104 can be adapted to connect directly to the positive and negative battery terminals 36 , 46 when the connections between the cells 30 are integral with the battery 20 .
- a connector 110 can be located on the second PCB 102 to make the connection between the battery temperature sensor 32 and the control module 54 .
- One or more straps 112 can urge the cells 30 together. The straps 112 can help reduce bending moments or other stresses in the second PCB 102 .
- a positive battery cable 114 , a negative battery cable 116 , and a ribbon cable 118 provide connections between the first PCB 82 and the second PCB 102 .
- the positive battery cable 114 has one end connected to the positive battery terminal 36 formed on the second PCB 102 .
- the other end of the positive battery cable 114 is fitted with the first mating connector 42 - 1 .
- the first mating connector 42 - 1 connects to the second mating connector 42 - 2 , which mounts on the first PCB 82 .
- the negative battery cable 116 has one end connected to the negative battery terminal 46 formed on the second PCB 102 .
- the other end of the negative battery cable 116 is fitted with the first mating connector 52 - 1 .
- the first mating connector 52 - 1 connects to the second mating connector 52 - 2 , which mounts on the first PCB 82 .
- One end of the ribbon cable 118 connects to the first PCB 82 and the other end connects to the second PCB 102 .
- the ends of the ribbon cable 118 can be fitted with connectors 120 , 122 that plug into mating connectors on the first and second PCBs 82 , 102 .
- the ribbon cable 118 carries the control module 54 signals between the first and second PCBs 82 , 102 .
- all hardware except the positive and negative power supply terminals 16 , 18 and the battery temperature sensor 32 can be on a single PCB. The single PCB would then provide the functionality of the first and second PCBs 82 , 102 .
- the second PCB 102 includes a communication connector 124 connected to the communication port 80 .
- the communication connector 124 aligns with an opening 126 in the housing 88 .
- the housing 88 is adapted to nest on top of the battery 20 .
- the housing 88 can have a peripheral ledge 128 formed around its interior.
- the peripheral ledge 128 rests upon a mating ledge 130 formed in a top periphery of the battery 20 .
- the interior of the housing 88 encloses the first PCB 82 , the second PCB 102 , and the positive and negative battery terminals 36 , 46 .
- a battery tray 132 contains the battery 20 and has upstanding portions 134 that secure to the housing 88 .
- the battery tray 132 can include integral mounting tabs 136 .
- the mounting tabs 136 facilitate fastening the rechargeable DC power supply 14 to a supporting surface.
- FIG. 5 shows one of various embodiments of an assembled rechargeable DC power supply 14 .
- a method 150 is shown that can be used to charge the battery 20 .
- the method 150 can be included in the computer software stored in the ROM 76 and executed by the CPU 74 .
- Control begins in start block 152 and proceeds to decision block 154 .
- decision block 154 control determines whether the battery temperature is greater than a first predetermined temperature.
- the first predetermined temperature can be about 52 deg. C.
- Control proceeds to block 156 when the determination of decision block 154 yields an affirmative result.
- control determines a charging current that is approximately equal to one-third of an amp*hour (Ah) rating of the battery 20 . For example, if the battery has a rating of 85 Ah, then control will determine the charging current to be about 28 amperes.
- Ah amp*hour
- Control proceeds from block 156 to block 158 and determines whether the battery temperature is greater that a second predetermined temperature.
- the second predetermined temperature is, by way of non-limiting example, 60 deg. C.
- Control discontinues charging and proceeds to exit block 160 when the determination of decision block 158 yields an affirmative result.
- control proceeds to decision block 162 when the determination of decision block 158 yields a negative result.
- control determines whether a battery temperature rate of change is greater than a predetermined rate of change. In some embodiments, by way of non-limiting example, the predetermined rate of change is about 12 deg. C./hr. Control returns to block 156 when the determination of decision block 162 yields a negative result. Alternatively, control proceeds to decision block 164 when the determination of decision block 162 yields an affirmative result.
- control determines whether the battery temperature is greater than a third predetermined temperature.
- the third predetermined temperature is about 35 deg. C.
- control proceeds to block 166 and determines a state of charge (SOC) of the battery 20 .
- SOC state of charge
- control proceeds to exit block 160 .
- control moves to block 168 and charges the battery at a predetermined current.
- the predetermined current is approximately 5 amperes.
- Control then proceeds to decision block 170 and determines whether the battery temperature is above a fourth predetermined temperature. In some embodiments, by way of non-limiting example, the fourth predetermined temperature is approximately 45 deg. C. Control discontinues charging and proceeds to exit block 160 when the determination of decision block 170 yields an affirmative result. Alternatively, if the determination of decision block 170 yields a negative result, then control proceeds to decision block 172 .
- control determines whether the battery 20 is sufficiently charged to provide at least 100% of its Ah rating. If the determination of decision block 172 returns an affirmative result, then control proceeds to block 174 . Alternatively, if the determination in decision block 172 returns a negative result, then control proceeds to decision block 176 . In decision block 176 , control determines whether the battery temperature rate of change is greater than a second predetermined rate of change. In some embodiments, by way of non-limiting example, the second predetermined rate of change is about 12 deg. C./hr. Control returns to block 168 when the determination of decision block 176 yields a negative result. Alternatively, control proceeds to block 174 when the determination of decision block 176 yields an affirmative result. In block 174 , control sets the SOC equal to 100%, discontinues charging, and then proceeds to exit block 160 .
Abstract
A telecommunication switching station includes telecommunication equipment, a DC power supply having an output connected to the telecommunication equipment, and a plurality of rechargeable DC power supplies connected in parallel with the output of the DC power supply. Each DC power supply includes a pair of power supply terminals, a rechargeable battery, and a bidirectional DC-DC converter module connected between the rechargeable battery and the pair of power supply terminals. The DC power supply provides power to the telecommunication equipment and recharges the plurality of rechargeable DC power supplies. The plurality of rechargeable DC power supplies serve as a back-up for the DC power supply.
Description
- The present invention relates generally to rechargeable DC power supplies having an integral DC-DC converter.
- Rechargeable DC power supplies are useful in many types of applications. For example, cellular towers and other stationary applications use rechargeable DC power supplies as an uninterruptible power source. The rechargeable DC power supplies provide backup power during a main grid outage.
- Referring now to
FIG. 1 , an example application of rechargeable DC power supplies is shown. A direct current (DC)power supply 2 receives power from a main grid 4. TheDC power supply 2 generally provides power to aload 6 and to a plurality of rechargeable DC power supplies 8-1, 8-2, . . . , 8-N, referred to collectively as rechargeableDC power supplies 8. Each rechargeableDC power supply 8 includes acorresponding battery 10 andcharging control circuit 12. - The
battery 10 provides a voltage that is less than a load voltage needed by theload 6. If theDC power supply 2 becomes inoperative, the series-connected rechargeableDC power supplies 8 provide the load voltage. However, because the rechargeable DC power supplies are connected in series, theload 6 may not receive sufficient voltage if one of more of the rechargeableDC power supplies 8 is in a discharged or open circuit condition. - A telecommunication switching station includes telecommunication equipment, a DC power supply having an output connected to the telecommunication equipment, and a plurality of rechargeable DC power supplies connected in parallel with the output of the DC power supply. Each DC power supply includes a pair of power supply terminals, a rechargeable battery, and a bidirectional DC-DC converter module connected between the rechargeable battery and the pair of power supply terminals. The DC power supply provides power to the telecommunication equipment and recharges the plurality of rechargeable DC power supplies. The plurality of rechargeable DC power supplies serve as a back-up for the DC power supply.
- In other features, each of said rechargeable DC power supplies further includes a control module that communicates an enable signal to a respective one of said bidirectional DC-DC converter modules. The respective bidirectional DC-DC converter module selectively creates an open circuit condition between said pair of power supply terminals in accordance with said enable signal.
- In other features, each of said rechargeable DC power supplies further includes a data communication port in communication with a respective one of said control modules. Each of said rechargeable DC power supplies can further includes a battery temperature sensor positioned in proximity of a respective one of said rechargeable batteries and providing a battery temperature signal to a respective one of said control modules. Each battery temperature sensor is positioned inside of said respective one of said rechargeable batteries.
- In other features, each rechargeable DC power supplies further includes a current sensor providing a signal to a respective one of said control modules and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules. The signal can be indicative of a magnitude and direction of current flow through said respective one of said rechargeable batteries.
- In other features, each of the rechargeable DC power supplies further includes a switch having a control input and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules and wherein said switch opens and closes in response to said control input.
- In other features, each of said control modules can communicate a desired output voltage signal to said respective one of said bidirectional DC-DC converter modules. The respective one of said bidirectional DC-DC converter modules regulates a load voltage across a respective one of said pair of power supply terminals in accordance with said desired output voltage signal.
- A rechargeable DC power supply includes a housing including an interior, an exterior, and an integral heat sink including a heat absorbing surface formed in said interior and a heat dissipating surface formed in said exterior. The rechargeable DC power supply includes a rechargeable battery having battery terminals positioned in said interior, power supply terminals positioned at said exterior of said housing, anda first printed circuit board (PCB) assembly including a bidirectional DC-DC converter module connected between said battery terminals and said power supply terminals. The first PCB assembly is in coplanar contact with said heat absorbing surface.
- In other features, a battery tray is connected to said housing and contains said rechargeable battery. The rechargeable battery can include a plurality of rechargeable cells having cell terminals. A second PCB assembly can be positioned on said cell terminals and include PCB traces connecting said cell terminals to form said battery terminals. The housing can nest on said rechargeable battery.
- In other features, the rechargeable DC power supply can include a battery temperature sensor positioned in proximity of said rechargeable battery and connected to said second PCB assembly. The battery temperature sensor can be located inside of said battery.
- In other features, a control module is positioned in the interior of said housing and has a data communication port. A connector in communication with said data communication port can be accessible from said exterior of said housing.
- A rechargeable DC power supply system for providing power to a DC load, includes a plurality of rechargeable DC power supplies. Each rechargeable DC power supply includes a rechargeable battery, a pair of power supply terminals, a bidirectional DC-DC converter module connected between said rechargeable battery and said power supply terminals, and a controller module receiving at least one signal indicative of a condition of said rechargeable battery and communicating an enable signal to said corresponding bidirectional DC-DC converter module in accordance with said condition. Said power supply terminals of said plurality of rechargeable DC power supplies and said load are connected by parallel connections. One of said enable signals causes a respective one of said corresponding rechargeable DC power supplies to electrically connect and disconnect from said load. Each of said rechargeable DC power supplies can include a data communication port that communicates data indicative of said condition.
- Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
- The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
-
FIG. 1 is a functional block diagram of a load connected to a DC power supply and series-connected rechargeable DC power supplies according to the prior art; -
FIG. 2 is a functional block diagram of a load connected to a DC power supply and parallel-connected rechargeable DC power supplies; -
FIG. 3 is a functional block diagram of a rechargeable DC power supply including a bidirectional DC-DC converter; -
FIG. 4 is an exploded view of a rechargeable DC power supply; -
FIG. 5 is a perspective view of the rechargeable DC power supply ofFIG. 4 ; and -
FIG. 6 is a method of operating a rechargeable DC power supply. - The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the term module and/or device refers to an application specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that provide the described functionality. For purposes of clarity, the same reference numerals will be used to identify similar elements.
- Referring now to
FIG. 2 , a plurality of rechargeable DC power supplies 14-1, 14-2, . . . , 14-N, referred to collectively as rechargeableDC power supplies 14, are shown. The rechargeableDC power supplies 14 include corresponding positive 16 and negative 18 power supply terminals that are connected in parallel. Each rechargeableDC power supply 14 has a correspondingrechargeable battery 20 and a bidirectional DC-DC converter module 22 connected between thebattery 20 and the positive 16 and negative 18 power supply terminals. A battery voltage of eachbattery 20 can be less than a DC load voltage needed by aload 24. Examples of loads include, by way of non-limiting example, telecommunication equipment including multiplexers and/or switching circuitry, cellular communications transmitters and/or receivers, and electric and hybrid electric vehicles. The bidirectional DC-DC converter modules 22 convert the battery voltage to the load voltage and vice versa. In some embodiments, the battery voltage is about 12V and the load voltage is between about 24V and 48V. Theload 24 connects to the positive 16 and negative 18 power supply terminals. - A
main grid 26 provides power to aDC power supply 28. TheDC power supply 28 has positive and negative outputs connected to theload 24 and to the positive 16 and negative 18 power supply terminals. Themain grid 26 can be an AC line voltage, such as provided by a public electric utility, or a DC line voltage such as may be provided by an alternative energy source such as solar cells and/or generators. - When the
main grid 26 is powered, theDC power supply 28 provides power to operate theload 24 and to recharge thebatteries 20. The bidirectional DC-DC converter modules 22 reduce the load voltage to the battery voltage and regulate a charging current provided to thebatteries 20. - When the
main grid 26 loses power, the rechargeable DC power supplies 14 provide power to operate theload 24. The bidirectional DC-DC converter modules 22 increase the battery voltage to the load voltage. - Turning now to
FIG. 3 , a functional block diagram of the rechargeableDC power supply 14 is shown. Therechargeable battery 20 has at least onerechargeable cell 30, such as, by way of non-limiting example, nickel-metal hydride, nickel-cadmium, lithium-ion, and/or lead-acid cells. Therechargeable cells 30 can connect in series, parallel, or series-parallel. Abattery temperature sensor 32 can be positioned in proximity of thebattery 20. In some embodiments, thetemperature sensor 32 is positioned between two of thecells 30 and near a center of mass of thebattery 20. By way of non-limiting example, thebattery temperature sensor 32 can be a thermistor having a negative temperature coefficient. - A
current sensor 34 can connect between apositive battery terminal 36 and apositive module terminal 38 of the bidirectional DC-DC converter module 22. Thecurrent sensor 34 provides acurrent signal 40 indicative of a magnitude of battery current flowing through thebattery 20. In some embodiments, thecurrent signal 40 also provides an indication of a direction of the battery current. First mating connectors 42-1 and 42-2, referred to collectively as the first connector 42, can be used between thepositive battery terminal 36 and thecurrent sensor 34. The first connector 42 facilitates installation and removal of thebattery 20. - A
switch 44 selectively connects anegative battery terminal 46 to anegative module terminal 48 of the bidirectional DC-DC converter module 22. Theswitch 44 has aswitch control input 50 that controls whether theswitch 44 is open or closed. In some embodiments, theswitch 44 can be a transistor, electromechanical relay, or solid-state relay. Second mating connectors 52-1 and 52-2, referred to collectively as the second connector 52, can be used between thenegative battery terminal 46 and theswitch 44 to facilitate installation and removal of thebattery 20. The DC-DC converter module 22 can include thecurrent sensor 34 and/or theswitch 44. - A
control module 54 receives various signals indicative of voltages and current in the rechargeableDC power supply 14. Abattery temperature input 56 connects to thebattery temperature sensor 32. Abattery voltage input 58 connects to thepositive battery terminal 36 and thenegative battery terminal 46. Aterminal voltage input 60 connects to the positivepower supply terminal 16 and the negativepower supply terminal 18. Asupply voltage input 62 connects to thepositive module terminal 38 and thenegative module terminal 48. Acurrent sense input 64 connects to thecurrent signal 40. Thecontrol module 54 senses the load voltage through theterminal voltage inputs 60. - The
control module 54 also provides a number of output signals. An over-voltage protection (OVP)output 66 connects to theswitch control input 50. Acurrent limit signal 68, a desiredoutput voltage signal 70, and an enablesignal 72 connect to the bidirectional DC-DC converter module 22. The bidirectional DC-DC converter module 22 uses thecurrent limit signal 68 to limit the battery current. The bidirectional DC-DC converter module 22 uses the desiredoutput voltage signal 70 to establish the load voltage at the positive 16 and negative 18 power supply terminals. For example, the desiredoutput voltage signal 70 can indicate that the load voltage should be set to a value between about 24V and 48V. The bidirectional DC-DC converter module 22 uses the enablesignal 72 to turn the positive 16 and negative 18 power supply terminals on and off. The positive 16 and negative 18 power supply terminals are turned on during normal operation. However, if the rechargeableDC power supply 14 is supposed to be providing power to theload 24 and some condition prevents it from doing so, such as thebattery 26 is discharged, then thecontroller 54 can use the enablesignal 72 to turn off the positive 16 and negative 18 power supply terminals. This electrically disconnects the rechargeableDC power supply 14 from theload 24 and also prevents it from undesirably discharging the other rechargeable DC power supplies 14. - A
CPU 74 uses the inputs and outputs of thecontrol module 54. TheCPU 74 executes a computer program stored in a read-only memory (ROM) 76. TheROM 76 can include other types of non-volatile computer memory, such as, by way of non-limiting example, flash, EPROM, and/or EEPROM. TheCPU 74 stores variables, such as the load voltage, battery voltage, and battery current, in a random access memory (RAM) 78. Thecontrol module 54 can also have a bidirectionaldata communication port 80 in communication with theCPU 74. A user can access thedata communication port 80 and interact with theCPU 74 to read the variables from theRAM 78 and/or change the computer program stored in theROM 76. By way of non-limiting example, thedata communication port 80 can be serial, parallel, RS-232, controller area network (CAN), and/or Ethernet. - Turning now to
FIG. 4 , an exploded view is shown of one of various embodiments of the rechargeableDC power supply 14. The bidirectional DC-DC converter module 22 can be assembled on a first printed circuit board (PCB) 82. Thefirst PCB 82 has at least one planar area on anupper surface 84 that comes into coplanar contact with a planarheat absorbing surface 86 located on an interior of ahousing 88. The region of coplanar contact between the planar area of thefirst PCB 82 and the heat-absorbingsurface 86 can contain a material that enhances thermal conductivity, such as a thermal compound or a thermal pad. One ormore screws 90 can engage thehousing 88 and bias the planar area of thefirst PCB 82 towards the heat-absorbingsurface 86. Springs and/or clamps can also be used to supplement, or as substitute for, the function of thescrews 90. The heat-absorbingsurface 86 can include one ormore recesses 92 that accommodate components positioned on theupper surface 84. An exterior of thehousing 88 can include a heat-dissipatingportion 94, such as fins, pins, fluid channels, or other structure to dissipate heat from thehousing 88. -
Openings 96 formed in aterminal plate 98 receive the positive and negativepower supply terminals terminal plate 98 should be formed of an insulating material to prevent the positive and negativepower supply terminals terminal plate 98 can be formed from a conductive material and insulators can be positioned in theopenings 96 between the positive and negativepower supply terminals terminal plate 98. Thehousing 88 has anopening 100 that receives theterminal plate 98 and allows the positive and negativepower supply terminals first PCB 82. - The
control module 54 can be assembled on asecond PCB 102. Thesecond PCB 102 has a plurality ofterminals 104, such as plated-through holes, adapted to connect to positive and negative terminals located on a top 106 of eachcell 30. Circuit traces on thesecond PCB 102 connect theterminals 104. The circuit traces make the connections between thecells 30 and provide the positive andnegative battery terminals battery 20 includescells 30 connected in a series, parallel, or series-parallel manner. Fasteners, such asscrews 108, secure the connection between theterminals 104 and the terminals of eachcell 30. Alternatively, theterminals 104 can be adapted to connect directly to the positive andnegative battery terminals cells 30 are integral with thebattery 20. - A
connector 110 can be located on thesecond PCB 102 to make the connection between thebattery temperature sensor 32 and thecontrol module 54. One or more straps 112 can urge thecells 30 together. The straps 112 can help reduce bending moments or other stresses in thesecond PCB 102. - A
positive battery cable 114, anegative battery cable 116, and aribbon cable 118 provide connections between thefirst PCB 82 and thesecond PCB 102. Thepositive battery cable 114 has one end connected to thepositive battery terminal 36 formed on thesecond PCB 102. The other end of thepositive battery cable 114 is fitted with the first mating connector 42-1. The first mating connector 42-1 connects to the second mating connector 42-2, which mounts on thefirst PCB 82. Thenegative battery cable 116 has one end connected to thenegative battery terminal 46 formed on thesecond PCB 102. The other end of thenegative battery cable 116 is fitted with the first mating connector 52-1. The first mating connector 52-1 connects to the second mating connector 52-2, which mounts on thefirst PCB 82. One end of theribbon cable 118 connects to thefirst PCB 82 and the other end connects to thesecond PCB 102. The ends of theribbon cable 118 can be fitted withconnectors second PCBs ribbon cable 118 carries thecontrol module 54 signals between the first andsecond PCBs power supply terminals battery temperature sensor 32, can be on a single PCB. The single PCB would then provide the functionality of the first andsecond PCBs - The
second PCB 102 includes acommunication connector 124 connected to thecommunication port 80. Thecommunication connector 124 aligns with anopening 126 in thehousing 88. - The
housing 88 is adapted to nest on top of thebattery 20. In one adaptation, thehousing 88 can have aperipheral ledge 128 formed around its interior. Theperipheral ledge 128 rests upon amating ledge 130 formed in a top periphery of thebattery 20. When thehousing 88 nests on top of thebattery 20, the interior of thehousing 88 encloses thefirst PCB 82, thesecond PCB 102, and the positive andnegative battery terminals - A
battery tray 132 contains thebattery 20 and hasupstanding portions 134 that secure to thehousing 88. Thebattery tray 132 can include integral mountingtabs 136. The mountingtabs 136 facilitate fastening the rechargeableDC power supply 14 to a supporting surface.FIG. 5 shows one of various embodiments of an assembled rechargeableDC power supply 14. - Referring now to
FIG. 6 , amethod 150 is shown that can be used to charge thebattery 20. Themethod 150 can be included in the computer software stored in theROM 76 and executed by theCPU 74. Control begins instart block 152 and proceeds todecision block 154. Indecision block 154, control determines whether the battery temperature is greater than a first predetermined temperature. By way of non-limiting example, the first predetermined temperature can be about 52 deg. C. Control proceeds to block 156 when the determination ofdecision block 154 yields an affirmative result. Inblock 156, control determines a charging current that is approximately equal to one-third of an amp*hour (Ah) rating of thebattery 20. For example, if the battery has a rating of 85 Ah, then control will determine the charging current to be about 28 amperes. - Control proceeds from
block 156 to block 158 and determines whether the battery temperature is greater that a second predetermined temperature. In some embodiments, the second predetermined temperature is, by way of non-limiting example, 60 deg. C. Control discontinues charging and proceeds to exitblock 160 when the determination ofdecision block 158 yields an affirmative result. Alternatively, control proceeds to decision block 162 when the determination ofdecision block 158 yields a negative result. Indecision block 162, control determines whether a battery temperature rate of change is greater than a predetermined rate of change. In some embodiments, by way of non-limiting example, the predetermined rate of change is about 12 deg. C./hr. Control returns to block 156 when the determination ofdecision block 162 yields a negative result. Alternatively, control proceeds to decision block 164 when the determination ofdecision block 162 yields an affirmative result. - In
decision block 164, control determines whether the battery temperature is greater than a third predetermined temperature. In some embodiments, by way of non-limiting example, the third predetermined temperature is about 35 deg. C. When the determination ofdecision block 164 yields a negative result, control proceeds to block 166 and determines a state of charge (SOC) of thebattery 20. Inblock 166, the SOC is determined by the equation
SOC=100%−eff(Tend−25 deg. C.) - where eff is a predetermined charge acceptance efficiency of the
battery 16 and Tend is the current battery temperature in deg. C. Fromblock 166, control proceeds to exitblock 160. - Alternatively, if the determination of
decision block 164 yields an affirmative result, then control moves to block 168 and charges the battery at a predetermined current. In some embodiments, by way of non-limiting example, the predetermined current is approximately 5 amperes. Control then proceeds to decision block 170 and determines whether the battery temperature is above a fourth predetermined temperature. In some embodiments, by way of non-limiting example, the fourth predetermined temperature is approximately 45 deg. C. Control discontinues charging and proceeds to exitblock 160 when the determination ofdecision block 170 yields an affirmative result. Alternatively, if the determination ofdecision block 170 yields a negative result, then control proceeds todecision block 172. - In
decision block 172 control determines whether thebattery 20 is sufficiently charged to provide at least 100% of its Ah rating. If the determination ofdecision block 172 returns an affirmative result, then control proceeds to block 174. Alternatively, if the determination indecision block 172 returns a negative result, then control proceeds todecision block 176. Indecision block 176, control determines whether the battery temperature rate of change is greater than a second predetermined rate of change. In some embodiments, by way of non-limiting example, the second predetermined rate of change is about 12 deg. C./hr. Control returns to block 168 when the determination ofdecision block 176 yields a negative result. Alternatively, control proceeds to block 174 when the determination ofdecision block 176 yields an affirmative result. Inblock 174, control sets the SOC equal to 100%, discontinues charging, and then proceeds to exitblock 160. - The applicant has found the various predetermined values disclosed herein to be suitable for use with a particular type of
NiMH battery 16 having an 85 Ah rating. It is appreciated by those skilled in the art that the predetermined values will vary with the type and Ah rating of thebattery 20. - Those skilled in the art can now appreciate from the foregoing description that the broad teachings of the present invention can be implemented in a variety of forms. Therefore, while this invention has been described in connection with particular examples thereof, the true scope of the invention should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims.
Claims (18)
1. A telecommunication switching station, comprising:
telecommunication equipment;
a DC power supply having an output connected to said telecommunication equipment; and
a plurality of rechargeable DC power supplies connected in parallel with said output of said DC power supply, each including:
a pair of power supply terminals;
a rechargeable battery; and
a bidirectional DC-DC converter module connected between said rechargeable battery and said pair of power supply terminals, wherein said DC power supply provides power to said telecommunication equipment and recharges said plurality of rechargeable DC power supplies and said plurality of rechargeable DC power supplies serve as a back-up for said DC power supply.
2. The telecommunication switching station of claim 1 wherein each of said rechargeable DC power supplies further includes:
a control module that communicates an enable signal to a respective one of said bidirectional DC-DC converter modules, wherein said respective bidirectional DC-DC converter module selectively creates an open circuit condition between said pair of power supply terminals in accordance with said enable signal.
3. The telecommunication switching station of claim 2 wherein each of said rechargeable DC power supplies further includes:
a data communication port in communication with a respective one of said control modules.
4. The telecommunication switching station of claim 2 wherein each of said rechargeable DC power supplies further includes:
a battery temperature sensor positioned in proximity of a respective one of said rechargeable batteries and providing a battery temperature signal to a respective one of said control modules.
5. The telecommunication switching station of claim 4 wherein each said battery temperature sensor is positioned inside of said respective one of said rechargeable batteries.
6. The telecommunication switching station of claim 2 wherein each of said rechargeable DC power supplies further includes:
a current sensor providing a signal to a respective one of said control modules and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules.
7. The telecommunication switching station of claim 6 wherein said signal is indicative of a magnitude and direction of current flow through said respective one of said rechargeable batteries.
8. The telecommunication switching station of claim 1 wherein each of said rechargeable DC power supplies further includes:
a switch having a control input and being connected between a respective one of said rechargeable batteries and a respective one of said bidirectional DC-DC converter modules and wherein said switch opens and closes in response to said control input.
9. The telecommunication switching station of claim 1 wherein each of said control modules further communicates a desired output voltage signal to said respective one of said bidirectional DC-DC converter modules and wherein said respective one of said bidirectional DC-DC converter modules regulates a load voltage across a respective one of said pair of power supply terminals in accordance with said desired output voltage signal.
10. A rechargeable DC power supply, comprising:
a housing including an interior, an exterior, and an integral heat sink including a heat absorbing surface formed in said interior and a heat dissipating surface formed in said exterior;
a rechargeable battery having battery terminals positioned in said interior;
power supply terminals positioned at said exterior of said housing; and
a first printed circuit board (PCB) assembly including a bidirectional DC-DC converter module connected between said battery terminals and said power supply terminals, said first PCB assembly being in coplanar contact with said heat absorbing surface.
11. The rechargeable DC power supply of claim 10 further comprising:
a battery tray connected to said housing and containing said rechargeable battery.
12. The rechargeable DC power supply of claim 10 , wherein said rechargeable battery comprises a plurality of rechargeable cells having cell terminals, further comprising:
a second PCB assembly positioned on said cell terminals and having PCB traces connecting said cell terminals to form said battery terminals.
13. The rechargeable DC power supply of claim 10 wherein said housing nests on said rechargeable battery.
14. The rechargeable DC power supply of claim 12 further comprising:
a battery temperature sensor positioned in proximity of said rechargeable battery and connected said second PCB assembly.
15. The rechargeable DC power supply of claim 14 wherein said battery temperature sensor is located inside of said battery.
16. The rechargeable DC power supply of claim 10 further comprising:
a control module positioned in said interior of said housing and having a data communication port; and
a connector in communication with said data communication port and accessible from said exterior of said housing.
17. A rechargeable DC power supply system for providing power to a DC load, comprising:
a plurality of rechargeable DC power supplies, each including:
a rechargeable battery;
a pair of power supply terminals;
a bidirectional DC-DC converter module connected between said rechargeable battery and said power supply terminals; and
a controller module receiving at least one signal indicative of a condition of said rechargeable battery and communicating an enable signal to said corresponding bidirectional DC-DC converter module in accordance with said condition; and
parallel connections between said power supply terminals of said plurality of rechargeable DC power supplies and said load, wherein one of said enable signals causes a respective one of said corresponding rechargeable DC power supplies to electrically connect and disconnect from said load.
18. The rechargeable DC power supply system of claim 17 wherein each of said rechargeable DC power supplies further includes a data communication port that communicates data indicative of said condition.
Priority Applications (3)
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PCT/US2006/010018 WO2006127101A1 (en) | 2005-05-23 | 2006-03-17 | Electronic battery module with biodirectional dc-dc converter |
US11/894,209 US7649336B2 (en) | 2005-05-23 | 2007-08-17 | Power supply with bidirectional DC-DC converter |
Applications Claiming Priority (1)
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US11/894,209 Active 2025-06-13 US7649336B2 (en) | 2005-05-23 | 2007-08-17 | Power supply with bidirectional DC-DC converter |
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Citations (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4810563A (en) * | 1986-03-14 | 1989-03-07 | The Bergquist Company | Thermally conductive, electrically insulative laminate |
US5204609A (en) * | 1991-12-16 | 1993-04-20 | Alisauski Daryl J | Battery cooling apparatus |
US5305185A (en) * | 1992-09-30 | 1994-04-19 | Samarov Victor M | Coplanar heatsink and electronics assembly |
US5767659A (en) * | 1991-10-30 | 1998-06-16 | Texas Instruments Incorporated | Batteries and battery systems |
US5777844A (en) * | 1996-08-30 | 1998-07-07 | General Electric Company | Electronic control with heat sink |
US5787576A (en) * | 1995-07-31 | 1998-08-04 | Borg-Warner Automotive, Inc. | Method for dissipating heat from an integrated circuit |
US5795664A (en) * | 1995-12-05 | 1998-08-18 | Norand Corporation | Rechargeable battery system having intelligent temperature control |
US5883497A (en) * | 1992-11-13 | 1999-03-16 | Packard Bell Nec | Battery fuel gauge |
US5926373A (en) * | 1996-12-23 | 1999-07-20 | Lucent Technologies Inc. | Encapsulated, board-mountable power supply and method of manufacture |
US5929537A (en) * | 1997-06-30 | 1999-07-27 | Sundstrand Corporation | PMG main engine starter/generator system |
US5958572A (en) * | 1997-09-30 | 1999-09-28 | Motorola, Inc. | Hybrid substrate for cooling an electronic component |
US6043629A (en) * | 1998-11-03 | 2000-03-28 | Hughes Electronics Corporation | Modular control electronics for batteries |
US6075701A (en) * | 1999-05-14 | 2000-06-13 | Hughes Electronics Corporation | Electronic structure having an embedded pyrolytic graphite heat sink material |
US6091604A (en) * | 1998-03-27 | 2000-07-18 | Danfoss A/S | Power module for a frequency converter |
US6111387A (en) * | 1997-03-24 | 2000-08-29 | Matsushita Electric Industrial Co., Ltd. | End plate incorporated in battery power source unit, and cooling device for same |
US6127801A (en) * | 1997-06-29 | 2000-10-03 | Techtium Ltd. | Battery pack assembly |
US6152597A (en) * | 1997-06-27 | 2000-11-28 | Potega; Patrick H. | Apparatus for monitoring temperature of a power source |
US6222733B1 (en) * | 1997-05-27 | 2001-04-24 | Melcher A.G. | Device and method for cooling a planar inductor |
US6392387B1 (en) * | 2000-03-14 | 2002-05-21 | Sage Electronics And Technology, Inc. | Passively protected battery pack with on load charge and on load conditioning-discharge capability and charging system |
US20020070709A1 (en) * | 1999-03-30 | 2002-06-13 | David Small | Methods and apparatuses rechargeable battery pack chargers |
US6407922B1 (en) * | 2000-09-29 | 2002-06-18 | Intel Corporation | Heat spreader, electronic package including the heat spreader, and methods of manufacturing the heat spreader |
US6441583B1 (en) * | 2000-10-23 | 2002-08-27 | Alcatel | Method, arrangement and interface system to enable electrical batteries of different kinds to be charged by means of the same charger device |
US20020186576A1 (en) * | 2001-06-06 | 2002-12-12 | Akihiko Kanouda | Backup power supply |
US6495787B1 (en) * | 1999-09-20 | 2002-12-17 | Alcatel | Electrical connection system between an electrochemical cell and a printed circuit |
US6496393B1 (en) * | 2001-11-28 | 2002-12-17 | Ballard Power Systems Corporation | Integrated traction inverter module and bi-directional DC/DC converter |
US20030067747A1 (en) * | 2001-10-05 | 2003-04-10 | Honda Giken Kogyo Kabushiki Kaisha | Cooling structure for high tension electrical equipment |
US20030094928A1 (en) * | 2001-11-22 | 2003-05-22 | Hitachi, Ltd. | Power supply unit, distributed power supply system and electric vehicle loaded therewith |
US20030107352A1 (en) * | 2001-12-06 | 2003-06-12 | Downer Scott D. | Electrical motor power management system |
US20030227275A1 (en) * | 2002-03-29 | 2003-12-11 | Takashi Kishi | Battery pack and battery pack with AC/DC conversion circuit board |
US6664660B2 (en) * | 2002-01-04 | 2003-12-16 | Delta Electronics, Inc. | Parallel power supply system with over-voltage protection circuit |
US20040056534A1 (en) * | 2002-06-03 | 2004-03-25 | International Rectifier Corp. | Planar DC-DC converter for multi-volt electrical applications |
US20040066094A1 (en) * | 2002-08-01 | 2004-04-08 | Yasunobu Suzuki | Co-generated power supply system |
US20050029867A1 (en) * | 2001-09-10 | 2005-02-10 | Wood Steven J. | Energy management system for vehicle |
US20050084745A1 (en) * | 2003-07-09 | 2005-04-21 | Colello Gary M. | Systems and methods for selective cell and/or stack control in a flowing electrolyte battery |
US6956354B2 (en) * | 2003-05-21 | 2005-10-18 | Kolvin Industries Ltd. | Battery charger |
US20050275374A1 (en) * | 2004-06-09 | 2005-12-15 | Guang Huang T | Pseudo constant current multiple cell battery charger configured with a parallel topology |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4419467A1 (en) * | 1994-06-04 | 1995-12-07 | Bernd Jonatat | Modular power supply for electrical equipment |
US5871859A (en) * | 1997-05-09 | 1999-02-16 | Parise; Ronald J. | Quick charge battery with thermal management |
US5952815A (en) * | 1997-07-25 | 1999-09-14 | Minnesota Mining & Manufacturing Co. | Equalizer system and method for series connected energy storing devices |
US6455186B1 (en) * | 1998-03-05 | 2002-09-24 | Black & Decker Inc. | Battery cooling system |
JP3530401B2 (en) * | 1998-10-29 | 2004-05-24 | 三洋電機株式会社 | Battery pack |
DE10015885A1 (en) * | 2000-03-30 | 2001-10-11 | Philips Corp Intellectual Pty | AC adapter or charger |
US7205746B2 (en) * | 2001-04-06 | 2007-04-17 | Microchip Technology Inc. | Battery cover assembly having integrated battery condition monitoring |
US20030186576A1 (en) * | 2002-04-01 | 2003-10-02 | Chien-Chung Lin | Electric connector structure |
JP4366100B2 (en) * | 2003-03-24 | 2009-11-18 | パナソニックEvエナジー株式会社 | Battery pack |
US7057376B2 (en) * | 2004-01-14 | 2006-06-06 | Vanner, Inc. | Power management system for vehicles |
WO2005114810A1 (en) * | 2004-05-17 | 2005-12-01 | Railpower Technologies Corp. | Automated battery cell shunt pypass |
-
2005
- 2005-05-23 US US11/134,999 patent/US20060261783A1/en not_active Abandoned
-
2006
- 2006-03-17 WO PCT/US2006/010018 patent/WO2006127101A1/en active Application Filing
-
2007
- 2007-08-17 US US11/894,209 patent/US7649336B2/en active Active
Patent Citations (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4810563A (en) * | 1986-03-14 | 1989-03-07 | The Bergquist Company | Thermally conductive, electrically insulative laminate |
US5767659A (en) * | 1991-10-30 | 1998-06-16 | Texas Instruments Incorporated | Batteries and battery systems |
US5204609A (en) * | 1991-12-16 | 1993-04-20 | Alisauski Daryl J | Battery cooling apparatus |
US5305185A (en) * | 1992-09-30 | 1994-04-19 | Samarov Victor M | Coplanar heatsink and electronics assembly |
US5883497A (en) * | 1992-11-13 | 1999-03-16 | Packard Bell Nec | Battery fuel gauge |
US5787576A (en) * | 1995-07-31 | 1998-08-04 | Borg-Warner Automotive, Inc. | Method for dissipating heat from an integrated circuit |
US5795664A (en) * | 1995-12-05 | 1998-08-18 | Norand Corporation | Rechargeable battery system having intelligent temperature control |
US5777844A (en) * | 1996-08-30 | 1998-07-07 | General Electric Company | Electronic control with heat sink |
US5926373A (en) * | 1996-12-23 | 1999-07-20 | Lucent Technologies Inc. | Encapsulated, board-mountable power supply and method of manufacture |
US6111387A (en) * | 1997-03-24 | 2000-08-29 | Matsushita Electric Industrial Co., Ltd. | End plate incorporated in battery power source unit, and cooling device for same |
US6222733B1 (en) * | 1997-05-27 | 2001-04-24 | Melcher A.G. | Device and method for cooling a planar inductor |
US6152597A (en) * | 1997-06-27 | 2000-11-28 | Potega; Patrick H. | Apparatus for monitoring temperature of a power source |
US6127801A (en) * | 1997-06-29 | 2000-10-03 | Techtium Ltd. | Battery pack assembly |
US5929537A (en) * | 1997-06-30 | 1999-07-27 | Sundstrand Corporation | PMG main engine starter/generator system |
US5958572A (en) * | 1997-09-30 | 1999-09-28 | Motorola, Inc. | Hybrid substrate for cooling an electronic component |
US6091604A (en) * | 1998-03-27 | 2000-07-18 | Danfoss A/S | Power module for a frequency converter |
US6043629A (en) * | 1998-11-03 | 2000-03-28 | Hughes Electronics Corporation | Modular control electronics for batteries |
US20020070709A1 (en) * | 1999-03-30 | 2002-06-13 | David Small | Methods and apparatuses rechargeable battery pack chargers |
US6075701A (en) * | 1999-05-14 | 2000-06-13 | Hughes Electronics Corporation | Electronic structure having an embedded pyrolytic graphite heat sink material |
US6495787B1 (en) * | 1999-09-20 | 2002-12-17 | Alcatel | Electrical connection system between an electrochemical cell and a printed circuit |
US6392387B1 (en) * | 2000-03-14 | 2002-05-21 | Sage Electronics And Technology, Inc. | Passively protected battery pack with on load charge and on load conditioning-discharge capability and charging system |
US6407922B1 (en) * | 2000-09-29 | 2002-06-18 | Intel Corporation | Heat spreader, electronic package including the heat spreader, and methods of manufacturing the heat spreader |
US6441583B1 (en) * | 2000-10-23 | 2002-08-27 | Alcatel | Method, arrangement and interface system to enable electrical batteries of different kinds to be charged by means of the same charger device |
US20020186576A1 (en) * | 2001-06-06 | 2002-12-12 | Akihiko Kanouda | Backup power supply |
US20050029867A1 (en) * | 2001-09-10 | 2005-02-10 | Wood Steven J. | Energy management system for vehicle |
US20030067747A1 (en) * | 2001-10-05 | 2003-04-10 | Honda Giken Kogyo Kabushiki Kaisha | Cooling structure for high tension electrical equipment |
US20030094928A1 (en) * | 2001-11-22 | 2003-05-22 | Hitachi, Ltd. | Power supply unit, distributed power supply system and electric vehicle loaded therewith |
US6496393B1 (en) * | 2001-11-28 | 2002-12-17 | Ballard Power Systems Corporation | Integrated traction inverter module and bi-directional DC/DC converter |
US20030107352A1 (en) * | 2001-12-06 | 2003-06-12 | Downer Scott D. | Electrical motor power management system |
US6664660B2 (en) * | 2002-01-04 | 2003-12-16 | Delta Electronics, Inc. | Parallel power supply system with over-voltage protection circuit |
US20030227275A1 (en) * | 2002-03-29 | 2003-12-11 | Takashi Kishi | Battery pack and battery pack with AC/DC conversion circuit board |
US20040056534A1 (en) * | 2002-06-03 | 2004-03-25 | International Rectifier Corp. | Planar DC-DC converter for multi-volt electrical applications |
US20040066094A1 (en) * | 2002-08-01 | 2004-04-08 | Yasunobu Suzuki | Co-generated power supply system |
US6956354B2 (en) * | 2003-05-21 | 2005-10-18 | Kolvin Industries Ltd. | Battery charger |
US20050084745A1 (en) * | 2003-07-09 | 2005-04-21 | Colello Gary M. | Systems and methods for selective cell and/or stack control in a flowing electrolyte battery |
US20050275374A1 (en) * | 2004-06-09 | 2005-12-15 | Guang Huang T | Pseudo constant current multiple cell battery charger configured with a parallel topology |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008000560A1 (en) * | 2008-03-07 | 2009-09-10 | Dilo Trading Ag | Mains-independent electrical energy storage unit |
WO2011082855A3 (en) * | 2009-12-17 | 2012-01-26 | Robert Bosch Gmbh | Energy transfer system for an energy accumulator system |
EP2466718A1 (en) * | 2010-12-16 | 2012-06-20 | Dialog Semiconductor GmbH | Multiple battery charger with automatic charge current adjustment |
WO2013154444A3 (en) * | 2012-04-11 | 2014-06-05 | Instytut Łączności | Method and system for remote measurement of available capacity of the batteries in the telecommunications power system |
US10090682B2 (en) * | 2012-07-03 | 2018-10-02 | Saft America, Inc. | System for transferring control of charge current |
US20150180257A1 (en) * | 2012-07-03 | 2015-06-25 | Saft America, Inc. | Battery electronics and control system |
US10056773B2 (en) * | 2012-11-30 | 2018-08-21 | Murata Manufacturing Co., Ltd. | Battery control device, control method, control system and electric vehicle |
US20150295448A1 (en) * | 2012-11-30 | 2015-10-15 | Sony Corporation | Battery control device, control method, control system and electric vehicle |
EP2784902A1 (en) * | 2013-03-27 | 2014-10-01 | LG CNS Co., Ltd. | Direct current (DC) microgrid charge/discharge system for secondary batteries connected in series |
US9455578B2 (en) | 2013-03-27 | 2016-09-27 | Hbl Corporation | Direct current (DC) microgrid charge/discharge system for secondary batteries connected in series |
US9559528B2 (en) * | 2013-05-15 | 2017-01-31 | Hbl Corporation | Apparatus and method with active balancing circuit and active balancing algorithm for charging and discharging secondary batteries connected in series |
US20140340044A1 (en) * | 2013-05-15 | 2014-11-20 | Hbl Corporation | Apparatus and method with active balancing circuit and active balancing algorithm for charging and discharging secondary batteries connected in series |
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WO2015197319A1 (en) * | 2014-06-26 | 2015-12-30 | Robert Bosch Gmbh | Transmitting device for transmitting electrical signals from at least one galvanic cell to at least one electronic evaluating unit |
US11024890B2 (en) * | 2014-06-26 | 2021-06-01 | Robert Bosch Gmbh | Transmitting device for transmitting electrical signals from at least one galvanic cell to at least one electronic evaluating unit |
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US11337460B2 (en) * | 2020-07-09 | 2022-05-24 | Japan Tobacco Inc. | Power supply unit for aerosol inhaler |
Also Published As
Publication number | Publication date |
---|---|
US7649336B2 (en) | 2010-01-19 |
WO2006127101A1 (en) | 2006-11-30 |
US20080042617A1 (en) | 2008-02-21 |
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Owner name: CHEVRON TECHNOLOGY VENTURES LLC, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:COBASYS LLC (FKA TEXACO OVONIC BATTERY SYSTEMS LLC);REEL/FRAME:019041/0005 Effective date: 20070126 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |