US20130181680A1 - Fault tolerant modular battery management system - Google Patents
Fault tolerant modular battery management system Download PDFInfo
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- US20130181680A1 US20130181680A1 US13/786,472 US201313786472A US2013181680A1 US 20130181680 A1 US20130181680 A1 US 20130181680A1 US 201313786472 A US201313786472 A US 201313786472A US 2013181680 A1 US2013181680 A1 US 2013181680A1
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- voltage converter
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Classifications
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Definitions
- the present application generally relates to battery management systems for electric vehicles or hybrid electric vehicles and more particularly to a fault tolerant modular battery management system (MBMS) capable of supporting critical loads with high power requirements.
- MBMS modular battery management system
- the electrical power requirements for electric vehicles (EV) or hybrid electric vehicles (HEV) can be very high.
- the battery will undergo discharging and charging cycles during vehicle start up/running mode and running/braking/internal and external charging mode respectively.
- the management of battery state of health, battery state of charge and battery temperature is critical in electric vehicle or hybrid electric vehicle applications when electric power cannot be interrupted during driving.
- different battery types, voltage and power requirements in different electric vehicles or hybrid electric vehicles may require different battery management systems. Therefore, the battery power supply system framework may be totally different from one vehicle design to another vehicle design due to the differences in battery type, power requirement and vehicle operating voltage.
- Sometimes the charging and replacement time of the battery packs may create a temporary interruption to user. A failed battery pack may cause the electric vehicle or hybrid electric vehicle to malfunction instantly.
- the battery packs (or cells) are connected in series forming a Battery Pack Assembly (BPA) in order to provide high voltage and high current to the electric vehicle or hybrid electric vehicle motors and other auxiliary systems. Since the battery packs or cells are connected in series, the charging and discharging current will flow through each battery pack (or cell) simultaneously. This causes problems in balancing individual battery pack (or cell) characteristics.
- a conventional battery management system detects the individual battery pack's (cell's) state of charge, state of health and battery temperature through complicated battery management design because of the serial connections between batteries. Individual battery pack (or cell), depending on the detected battery pack (or cell) condition, will be switched to be connected with (ON) or disconnected from (OFF) the serial connected battery packs (or cells).
- the BPA output voltage fluctuates. This will cause instability problem to motor drivers and associated circuits. Therefore, a DC/DC converter will be employed to convert the fluctuating BPA output voltage to a stable voltage supply for motor drivers and associated circuits.
- the DC/DC converter must operate at high voltage and high current conditions. The high power dissipation in the DC/DC converter generally lowers the reliability of the overall system. The system will shut down whenever the DC/DC converter fails. Further, the battery pack assembly (BPA) power cannot be easily increased or decreased to match with different loading requirements. Furthermore, a dead battery pack or cell cannot be replaced until the battery pack assembly (BPA) is disassembled from the vehicle.
- the present patent application is directed to a modular battery management system for managing a plurality of batteries and driving a load.
- the system includes a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load.
- the bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries.
- the battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules.
- the energy storage modules may be capacitors, super capacitors, ultra capacitors, flywheels or any form of recyclable electric energy storage elements.
- the bi-directional voltage converter modules may be configured to transfer electric energy from the energy storage modules to the batteries so as to charge the batteries when the voltage on the energy storage modules exceeds a predetermined value.
- the bi-directional voltage converter modules may be respectively connected to the batteries through a first plurality of switches.
- the energy storage modules are respectively connected with the bi-directional voltage converter modules in parallel through a second plurality of switches.
- the load is connected to the energy storage modules through a third switch.
- the first plurality of switches, the second plurality of switches and the third switch are controlled by the battery management control modules.
- the battery management control modules may be configured to disable one of the first plurality of switches and the bi-directional voltage converter module connected with the switch simultaneously.
- the modular battery management system may further include a plurality of battery state monitoring modules respectively connected to the batteries, connected to the battery management control modules, and configured for monitoring the state of each battery and sending the state information of each battery to the battery management control modules.
- the battery state monitoring modules and the bi-directional voltage converter modules are connected to the battery management control modules through a control bus.
- the other battery management control modules may be configured to resume the functions of the battery management control module.
- the battery management control modules may be configured to adjust the output voltage levels of the bi-directional voltage converter modules based on an instruction from a user.
- FIG. 1 is a schematic system block diagram of a fault tolerant modular battery management system according to an embodiment of the present patent application.
- FIG. 2 is a schematic circuit diagram of the fault tolerant modular battery management system depicted in FIG. 1 .
- FIG. 1 is a schematic system block diagram of a fault tolerant modular battery management system according to an embodiment of the present patent application.
- FIG. 2 is a schematic circuit diagram of the fault tolerant modular battery management system depicted in FIG. 1 .
- the fault tolerant modular battery management system includes a plurality of battery state monitoring modules ( 201 , 202 , . . . , 20 n ), a plurality of bi-directional DC/DC converter modules ( 401 , 402 , . . . , 40 n ), a plurality of energy storage modules ( 1401 , 1402 , . . . , 140 n ), a plurality of battery management control modules ( 1201 , . .
- Each battery pack (or cell), such as 101 , 102 , . . . , 10 n, is individually connected to a dedicated battery state monitoring module and then linked to a bi-directional DC/DC converter (such as 401 , 402 , . . . , 40 n ) through a plurality of switches 301 , 302 , . . . , 30 n .
- BPCM Battery Power Conversion Module
- Each battery pack (or cell) is isolated from other battery packs (or cells). This topology is different from serially connected batteries in conventional battery management systems.
- the bi-directional DC/DC converter outputs are connected in parallel so as to increase the overall output current capacity to provide loading current.
- the battery packs may include all kinds of batteries, which may be but not limited to lead-acid batteries, Nickel-metal hydride batteries, Nickel-Cadmium batteries, Lithium-Ion batteries, Lithium-Polymer batteries, Zebra Na/NiCl.sub.2 batteries, NiZn batteries, Lithium iron phosphate batteries, Ferrous batteries, or any forms of electrical rechargeable energy storage elements.
- batteries which may be but not limited to lead-acid batteries, Nickel-metal hydride batteries, Nickel-Cadmium batteries, Lithium-Ion batteries, Lithium-Polymer batteries, Zebra Na/NiCl.sub.2 batteries, NiZn batteries, Lithium iron phosphate batteries, Ferrous batteries, or any forms of electrical rechargeable energy storage elements.
- the energy storage (ES) modules refer to electric energy storage elements, which may be but not limited to capacitors, super capacitors, ultra capacitors, flywheels, or any form of recyclable electric energy storage elements.
- the energy storage modules are the capacitors 1401 , . . . , 140 n, which are connected to all the bi-directional DC/DC converter modules through the switches 501 , . . . , 50 n respectively.
- the bi-directional DC/DC converter modules refer to electrical constructions that can act to charge energy from Energy Storage (ES) module to battery packs (or cells) or convert energy from battery packs (or cells) to Energy Storage (ES) modules and a load connected with the energy storage modules.
- ES Energy Storage
- ES Energy Storage
- the connections between the bi-directional DC/DC converter outputs, energy storage modules and the load are called the power buses. Electric current may be drawn from the power bus to the load.
- the loading current will be shared among bi-directional DC/DC converter outputs.
- the bi-directional DC/DC converter modules can be of an isolated type or a non-isolated type, and are configured to convert battery voltages to required loading voltage levels. Therefore, the loading voltage is determined by the bi-directional DC/DC converter output voltage settings instead of the serially connected batteries' end terminal voltages in conventional battery management systems.
- the bi-directional DC/DC converter modules can charge the batteries when sufficient energy is stored in the energy storage modules. This can resolve the battery pack (or cell) imbalance problem in conventional battery management systems.
- the battery state monitoring (BSM) modules ( 201 , 202 , . . . , 20 n ) are configured to provide battery state information to the bi-directional DC/DC converter modules and Battery Management Control (BMC) Modules ( 1201 , . . . , 120 n ).
- the BMC modules are configured to send control instructions to each Battery Power Conversion Module (BPCM) per individual operating state. For example, battery energy may be transferred from the batteries to the power bus through the bi-directional DC/DC converter modules, the batteries may receive energy from the power bus to charge the batteries through the bi-directional DC/DC converter modules, battery packs may be disabled and disconnected from the system, batteries may be removed from the system and additional Battery Power Conversion Modules (BPCMs) may be added to the system. Simultaneously, some battery packs (or cells) may undergo discharge cycles (delivering power), some other batteries may undergo charging cycles (receiving power) and yet some other batteries may be disconnected from the system, depending on the algorithm executed in the BMC program.
- the battery packs (cells) may be disconnected either under a fully charged, an unsafe or a dead condition. If one of the batteries is required to be removed from the system, the battery state monitoring (BSM) module will activate a release signal on the BSM module panel and to the BMC module. The fully charged battery packs (cells) will be connected back to the BPCM under the control of BMC module. The unsafe battery packs (or cells) are connected back to BPCM under the control of BMC module if the unsafe condition is removed.
- BSM battery state monitoring
- a user can remove a battery from the modular battery management system. Likewise, the user can install a replacement battery to the modular battery management system and then activate the battery state monitoring module to inform the Battery Management Control (BMC) modules through the Battery Management System (BMS) Control Bus. If a new battery is installed to the system, additional BSMs and Bi-directional DC/DC converter are required. The new or replacement battery will become a part of the Modular Battery Management System (MBMS). With this technology, the user can increase the Modular Battery Management System (MBMS) output power by adding more Battery Power Conversion Modules (BPCMs) without major system design change, or remove battery packs (cells) from the system if required.
- BMC Battery Management Control
- BMS Battery Management System
- the power density of the batteries (or cells) may increase the MBMS output power as well.
- the energy storage modules are connected in parallel to the power bus.
- the energy storage modules are energy storage devices that can be charged up with high energy within a short period of time (for example, 10 to 20 minutes).
- the energy storage modules serve as buffers for surge loading current and in-rush charging current.
- the Battery Management Control (BMC) modules will instruct the bi-directional DC/DC converter modules to charge up the battery packs (or cells) through the BMS control bus.
- the ES modules can be programmed to charge the battery packs individually or all at once or randomly.
- the Battery Management Control (BMC) Modules are programmable units that can be programmed to perform different algorithms to meet different vehicle/car requirements, for example, different voltage levels, different battery packs (or cells) characteristics, and different loading current requirements. Individual BMC module is configured to monitor the BMS control bus. Once a BMC module is in fault condition, the other BMC modules will take over the control without shutting down the system.
- BMC Battery Management Control
- the Battery Management Control module can adjust the output voltage level of the bi-directional DC/DC converter modules within certain range in order to increase the torque of the motor (DC or AC) while additional torque is required for hill climbing.
- ETC Electric Torque Control
- the modular battery management system is based on a redundant topology. Therefore, the detailed description on the first stage of Battery Power Conversion Module (BPCM) is explained here and it can be expanded to cover the system up to n stages where n is a positive integer.
- BPCM Battery Power Conversion Module
- the first Battery Power Conversion Module (BPCM) stage structure includes a battery 101 , which has positive (+) terminal, a negative ( ⁇ ) terminal and a battery temperature signal 1101 .
- the battery 101 is connected to a BSM module 201 .
- the BSM 201 is an electrical circuit that monitors the battery conditions, for example the state of charge, the state of health, the battery temperature, and the charging condition/status, and feedbacks the information to a Battery Management System (BMS) control bus 1 through a signal path 601 .
- BMS Battery Management System
- the control signal 801 from the BSM control bus 1 , will be used to display the battery operating status via status indication devices such as LEDs, a display panel or lamps, which may be charging, discharging, dead battery, being connected to the bi-directional DC/DC converter or disconnected from the bi-directional DC/DC converter).
- the output voltage of the battery 101 is connected to the switch 301 .
- the switch 301 is an electrical activated switch, which is used to control the electrical connection between the BSM module 201 to the bi-directional DC/DC converter 401 .
- the switch 301 is electrically controlled by a control signal 901 , which is transmitted from the Battery Management Control (BMC) modules 1201 , . . . , 120 n .
- BMC Battery Management Control
- the switch 301 can be manually disabled during maintenance or servicing.
- the signal 901 controls the ON or OFF status of the bi-directional DC/DC converter 401 . If the switch 301 is disabled by the signal 901 or by manual switching, the bi-directional DC/DC converter 401 will be disabled simultaneously. The bi-directional DC/DC converter 401 can be disabled by the control signal 1001 during maintenance or servicing.
- the battery 101 's temperature signal 1101 is also connected to the bi-directional DC/DC converter 401 .
- the bi-directional DC/DC converter module 401 will adjust the charging or discharging current in according to the signal 1101 .
- the current distribution between different levels of bi-directional DC/DC converter modules is controlled through the current sharing signal bus 6 , which can be analog or digital signal bus.
- the current sharing signal bus 6 is bi-directional.
- the bi-directional DC/DC converter module 401 has a current sharing signal output which is bi-directional and connected to the current sharing signal bus 6 .
- Other bi-directional DC/DC converter modules' current sharing signal outputs are connected to the current sharing signal bus 6 .
- the bi-directional DC/DC converter module 401 will adjust its output current according to the current sharing signal bus 6 's voltage level or digital signal.
- the voltage level or digital information of the current sharing signal bus 6 represents the average load current for each bi-directional DC/DC converter module.
- the bi-directional DC/DC converter 401 will communicate with the BSM control bus through the bi-directional bus 701 .
- the outputs of the bi-directional DC/DC converter modules are connected to a power bus 2 .
- the power bus 2 connects the Energy Storage modules 1401 up to 140 n, motor controller 3 (which can be single or multiple), an internal charging circuit 4 and an external charging circuit 5 .
- the Energy Storage modules 1401 to 140 n are connected to the power bus 2 through the switch 501 to 50 n respectively.
- the switches 501 to 50 n are electrically controlled by BMC module through control signals 1301 to 130 n respectively.
- the number of energy storage module activations is controlled by a program embedded in BMC.
- the energy storage modules 1401 to 140 n are configured to provide energy buffers during charging and discharging. In the charging mode, it will store energy from the external charging circuit, the regenerative braking power, and the internal electricity generator(s). This energy will be used to charge back batteries 101 to 10 n through the bi-directional DC/DC converter modules 401 to 40 n respectively. In the discharge mode, it will provide power and energy to the motor controller as well as the surge load conditions so that the bi-directional DC/DC converter modules 401 to 40 n will not be overloaded.
- the Battery Management Control (BMC) modules 1201 to 120 n are connected and programmed in a redundancy topology.
- the BMC modules are connected to the BMS Control Bus 1 through the bi-directional communication buses 1501 to 150 n.
- the switches 301 to 30 n, 7 , 8 , and 9 are controlled by the battery management control modules 1201 to 120 n through the BMS control bus.
- the switches 301 to 30 n, 7 , 8 , and 9 are turned OFF.
- the switches 7 and 8 will be turned ON.
- the switch 8 will be turned OFF if battery (or cell) charging is not required.
- the switch 9 will be turned ON and the switches 7 and 8 will be turned OFF. This is to prevent electrical over-stress to the motor controller 3 and the internal electricity generator(s) 4 during external charging. If the motor controller or electricity generator(s) are designed to be able to withstand the stress, the switches 7 and 8 can be turned ON.
- the battery status monitoring module assemblies ( 201 , 201 , . . . 20 n ) form an integral part of the system.
- the Bus A connector is connected to the BMS control bus.
- the connect/disconnect switch and the bi-directional DC/DC converter module forms the bi-directional DC/DC converter assembly which is an integral part of the systems.
- the Bus B connector is connected to the BMS control bus.
- the battery status monitoring module assemblies and bi-directional DC/DC converter assemblies are connected to the BMS control bus.
- the outputs of the bi-directional DC/DC converter assemblies are connected to the DC power bus ( 2 ) in parallel with each other.
- the Battery management control modules are connected to the BMS control bus through the respective Bus A and Bus B connectors.
- the Bus C connector provides an interface between the vehicle signal interface 10 to the battery management control modules ( 1201 , . . . , 120 n ) through the BMS control bus.
- the vehicle signal interface 10 is a control interface to Energy storage modules, internal charging circuits and external charging circuits.
- the fault tolerant modular battery management system features multiple redundancy at all module levels. These redundancy features allow concurrent maintenance operations and provide multi-level fault tolerance. Therefore, the modular battery management system has improved reliability and availability. In addition, due to the modular design framework, the modules at all levels can be manufactured economically.
- individual element or module can be removed from or added to the MBMS without interruption to the system availability.
- the battery pack (or cell) can be removed from or added to the MBMS without interruption to the system availability.
- the BSM module can be removed from or added to the MBMS without interruption to the system availability.
- the bi-directional DC/DC converter module can be removed from or added to the MBMS without interruption to the system availability.
- the Energy Storage module can be removed from or added to the MBMS without interruption to the system availability.
- the BMC module can be removed from or added to the MBMS without interruption to the system availability.
- the MBMS provides a framework for EV or HEV or battery operated machines/equipments. This framework can be used for different battery types, power bus voltages, and output power requirements.
- the BSM and bi-directional DC/DC converter module can be combined as a single module (or unit) in a specific application.
- the battery packs (or cells) are operated individually instead of serial connected in conventional systems.
- the fault tolerant modular battery management system resolves the battery pack (or cell) imbalance problem that exists in conventional battery packs connected in series.
- the output voltage to the power bus is determined by the bi-directional DC/DC converter modules instead of the number of the battery packs (or cells) connected in series.
- the remaining battery packs (or cells) can provide a limited output power at a rated voltage to operate the motor driving circuits.
- the output current is provided by the sum of individual bi-directional DC/DC converter output currents.
- the energy is charged directly to Energy Storage (ES) module(s). This can speed up the charging cycle.
- the stored energy in Energy Storage (ES) module(s) then charges up the battery packs (or cells) through the bi-directional DC/DC converter modules.
- the battery packs (or cells) in the MBMS can operate in different modes of operation simultaneously. This includes battery discharging, battery charging, battery being connected to the MBMS and battery being disconnected from the MBMS.
- the individual battery packs (or cells) can be programmed in discharging or charging mode by the BMC module.
- the energy fed by internal electricity generator(s), regenerative braking and other power generation devices can charge up some or all battery packs (or cells) through the Energy Storage (ES) module(s) and bi-directional DC/DC converter module(s).
- ES Energy Storage
- MBMS output capacity can be increased by the addition of battery Power Conversion Modules (BPCM).
- BPCM Battery Power Conversion Modules
- the MBMS output capacity can be reduced by removal of battery packs (or cells), or Battery Power Conversion Modules (BPCMs).
- the MBMS output voltage can be adjusted by the adjustment of bi-directional DC/DC converters output voltage.
- the control algorithm embedded in the BMC module can be programmed for individual battery pack charging, discharging and being disconnected from the MBMS.
- the control algorithm inside the BMC module can be programmed for different battery characteristics, e.g., nickel-metal hydride NiHM, lithium-ion Li ion, lithium-ion Polymer and etc.
- the BMC module can be interfaced with a driver through a BMC display panel. Battery charging and discharging status, remaining energy level, and alert for battery maintenance information can be provided by the BMC display panel.
- the batteries can be a combination of different types.
- Lead-acid and Lithium batteries can operate in the system simultaneously.
- the characteristic of high power density of lithium battery and deep cycle discharge of Lead-acid battery can contribute to a longer drive range.
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Abstract
A modular battery management system for managing a plurality of batteries and driving a load includes a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load. The bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries. The batteries, the bi-directional voltage converter modules, the energy storage modules, and the battery management control modules are arranged in a redundant topology so that if any one of the components fails, the other components resume the functions of the failing component.
Description
- This present application is a Continuation Application of prior application Ser. No. 12/722,542, filed on Mar. 12, 2010, which claims the benefit of U.S. provisional Patent Application No. 61/187,273, filed on Jun. 15, 2009; the contents of which are hereby incorporated by reference.
- The present application generally relates to battery management systems for electric vehicles or hybrid electric vehicles and more particularly to a fault tolerant modular battery management system (MBMS) capable of supporting critical loads with high power requirements.
- The electrical power requirements for electric vehicles (EV) or hybrid electric vehicles (HEV) can be very high. The battery will undergo discharging and charging cycles during vehicle start up/running mode and running/braking/internal and external charging mode respectively. The management of battery state of health, battery state of charge and battery temperature is critical in electric vehicle or hybrid electric vehicle applications when electric power cannot be interrupted during driving. And, different battery types, voltage and power requirements in different electric vehicles or hybrid electric vehicles may require different battery management systems. Therefore, the battery power supply system framework may be totally different from one vehicle design to another vehicle design due to the differences in battery type, power requirement and vehicle operating voltage. Sometimes the charging and replacement time of the battery packs may create a temporary interruption to user. A failed battery pack may cause the electric vehicle or hybrid electric vehicle to malfunction instantly.
- Conventionally, the battery packs (or cells) are connected in series forming a Battery Pack Assembly (BPA) in order to provide high voltage and high current to the electric vehicle or hybrid electric vehicle motors and other auxiliary systems. Since the battery packs or cells are connected in series, the charging and discharging current will flow through each battery pack (or cell) simultaneously. This causes problems in balancing individual battery pack (or cell) characteristics. A conventional battery management system detects the individual battery pack's (cell's) state of charge, state of health and battery temperature through complicated battery management design because of the serial connections between batteries. Individual battery pack (or cell), depending on the detected battery pack (or cell) condition, will be switched to be connected with (ON) or disconnected from (OFF) the serial connected battery packs (or cells). As a result, the BPA output voltage fluctuates. This will cause instability problem to motor drivers and associated circuits. Therefore, a DC/DC converter will be employed to convert the fluctuating BPA output voltage to a stable voltage supply for motor drivers and associated circuits. However, the DC/DC converter must operate at high voltage and high current conditions. The high power dissipation in the DC/DC converter generally lowers the reliability of the overall system. The system will shut down whenever the DC/DC converter fails. Further, the battery pack assembly (BPA) power cannot be easily increased or decreased to match with different loading requirements. Furthermore, a dead battery pack or cell cannot be replaced until the battery pack assembly (BPA) is disassembled from the vehicle.
- Accordingly, there is a need in the art for an improved battery management system with fault tolerant features to resolve the battery imbalance and dead cell problems. Further, additional features such as variation of power bus voltage, power output capacity and number of batteries are desired to be achieved.
- The above description of the background is provided to aid in understanding a fault tolerant modular battery management system, but is not admitted to describe or constitute pertinent prior art to the fault tolerant modular battery management system disclosed in the present application.
- The present patent application is directed to a modular battery management system for managing a plurality of batteries and driving a load. In one aspect, the system includes a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load. The bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries. The battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules.
- The energy storage modules may be capacitors, super capacitors, ultra capacitors, flywheels or any form of recyclable electric energy storage elements.
- The bi-directional voltage converter modules may be configured to transfer electric energy from the energy storage modules to the batteries so as to charge the batteries when the voltage on the energy storage modules exceeds a predetermined value.
- The bi-directional voltage converter modules may be respectively connected to the batteries through a first plurality of switches. The energy storage modules are respectively connected with the bi-directional voltage converter modules in parallel through a second plurality of switches. The load is connected to the energy storage modules through a third switch. The first plurality of switches, the second plurality of switches and the third switch are controlled by the battery management control modules.
- The battery management control modules may be configured to disable one of the first plurality of switches and the bi-directional voltage converter module connected with the switch simultaneously.
- The modular battery management system may further include a plurality of battery state monitoring modules respectively connected to the batteries, connected to the battery management control modules, and configured for monitoring the state of each battery and sending the state information of each battery to the battery management control modules. The battery state monitoring modules and the bi-directional voltage converter modules are connected to the battery management control modules through a control bus.
- When one battery management control module stops working properly, the other battery management control modules may be configured to resume the functions of the battery management control module.
- The battery management control modules may be configured to adjust the output voltage levels of the bi-directional voltage converter modules based on an instruction from a user.
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FIG. 1 is a schematic system block diagram of a fault tolerant modular battery management system according to an embodiment of the present patent application. -
FIG. 2 is a schematic circuit diagram of the fault tolerant modular battery management system depicted inFIG. 1 . - Reference will now be made in detail to a preferred embodiment of the fault tolerant modular battery management system disclosed in the present patent application, examples of which are also provided in the following description. Exemplary embodiments of the fault tolerant modular battery management system disclosed in the present patent application are described in detail, although it will be apparent to those skilled in the relevant art that some features that are not particularly important to an understanding of the fault tolerant modular battery management system may not be shown for the sake of clarity.
- Furthermore, it should be understood that the fault tolerant modular battery management system disclosed in the present patent application is not limited to the precise embodiments described below and that various changes and modifications thereof may be effected by one skilled in the art without departing from the spirit or scope of the protection. For example, elements and/or features of different illustrative embodiments may be combined with each other and/or substituted for each other within the scope of this disclosure.
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FIG. 1 is a schematic system block diagram of a fault tolerant modular battery management system according to an embodiment of the present patent application.FIG. 2 is a schematic circuit diagram of the fault tolerant modular battery management system depicted inFIG. 1 . Referring toFIG. 1 andFIG. 2 , the fault tolerant modular battery management system includes a plurality of battery state monitoring modules (201, 202, . . . , 20 n), a plurality of bi-directional DC/DC converter modules (401, 402, . . . , 40 n), a plurality of energy storage modules (1401, 1402, . . . , 140 n), a plurality of battery management control modules (1201, . . . , 120 n) and a plurality of battery packs (or cells) (101, 102, . . . , 10 n). Each battery pack (or cell), such as 101, 102, . . . , 10 n, is individually connected to a dedicated battery state monitoring module and then linked to a bi-directional DC/DC converter (such as 401, 402, . . . , 40 n) through a plurality ofswitches - The battery packs may include all kinds of batteries, which may be but not limited to lead-acid batteries, Nickel-metal hydride batteries, Nickel-Cadmium batteries, Lithium-Ion batteries, Lithium-Polymer batteries, Zebra Na/NiCl.sub.2 batteries, NiZn batteries, Lithium iron phosphate batteries, Ferrous batteries, or any forms of electrical rechargeable energy storage elements.
- As used herein, the energy storage (ES) modules refer to electric energy storage elements, which may be but not limited to capacitors, super capacitors, ultra capacitors, flywheels, or any form of recyclable electric energy storage elements. In this embodiment, referring to
FIG. 1 , the energy storage modules are thecapacitors 1401, . . . , 140 n, which are connected to all the bi-directional DC/DC converter modules through theswitches 501, . . . , 50 n respectively. - As used herein, the bi-directional DC/DC converter modules refer to electrical constructions that can act to charge energy from Energy Storage (ES) module to battery packs (or cells) or convert energy from battery packs (or cells) to Energy Storage (ES) modules and a load connected with the energy storage modules.
- The connections between the bi-directional DC/DC converter outputs, energy storage modules and the load are called the power buses. Electric current may be drawn from the power bus to the load. The loading current will be shared among bi-directional DC/DC converter outputs. The bi-directional DC/DC converter modules can be of an isolated type or a non-isolated type, and are configured to convert battery voltages to required loading voltage levels. Therefore, the loading voltage is determined by the bi-directional DC/DC converter output voltage settings instead of the serially connected batteries' end terminal voltages in conventional battery management systems. On the other hand, the bi-directional DC/DC converter modules can charge the batteries when sufficient energy is stored in the energy storage modules. This can resolve the battery pack (or cell) imbalance problem in conventional battery management systems.
- The battery state monitoring (BSM) modules (201, 202, . . . , 20 n) are configured to provide battery state information to the bi-directional DC/DC converter modules and Battery Management Control (BMC) Modules (1201, . . . , 120 n). The BMC modules are configured to send control instructions to each Battery Power Conversion Module (BPCM) per individual operating state. For example, battery energy may be transferred from the batteries to the power bus through the bi-directional DC/DC converter modules, the batteries may receive energy from the power bus to charge the batteries through the bi-directional DC/DC converter modules, battery packs may be disabled and disconnected from the system, batteries may be removed from the system and additional Battery Power Conversion Modules (BPCMs) may be added to the system. Simultaneously, some battery packs (or cells) may undergo discharge cycles (delivering power), some other batteries may undergo charging cycles (receiving power) and yet some other batteries may be disconnected from the system, depending on the algorithm executed in the BMC program.
- The battery packs (cells) may be disconnected either under a fully charged, an unsafe or a dead condition. If one of the batteries is required to be removed from the system, the battery state monitoring (BSM) module will activate a release signal on the BSM module panel and to the BMC module. The fully charged battery packs (cells) will be connected back to the BPCM under the control of BMC module. The unsafe battery packs (or cells) are connected back to BPCM under the control of BMC module if the unsafe condition is removed.
- A user can remove a battery from the modular battery management system. Likewise, the user can install a replacement battery to the modular battery management system and then activate the battery state monitoring module to inform the Battery Management Control (BMC) modules through the Battery Management System (BMS) Control Bus. If a new battery is installed to the system, additional BSMs and Bi-directional DC/DC converter are required. The new or replacement battery will become a part of the Modular Battery Management System (MBMS). With this technology, the user can increase the Modular Battery Management System (MBMS) output power by adding more Battery Power Conversion Modules (BPCMs) without major system design change, or remove battery packs (cells) from the system if required.
- The power density of the batteries (or cells) may increase the MBMS output power as well. The energy storage modules are connected in parallel to the power bus. The energy storage modules are energy storage devices that can be charged up with high energy within a short period of time (for example, 10 to 20 minutes). The energy storage modules serve as buffers for surge loading current and in-rush charging current. When the voltage on energy storage modules exceeds a preset value, the Battery Management Control (BMC) modules will instruct the bi-directional DC/DC converter modules to charge up the battery packs (or cells) through the BMS control bus. During charging, the ES modules can be programmed to charge the battery packs individually or all at once or randomly.
- The Battery Management Control (BMC) Modules are programmable units that can be programmed to perform different algorithms to meet different vehicle/car requirements, for example, different voltage levels, different battery packs (or cells) characteristics, and different loading current requirements. Individual BMC module is configured to monitor the BMS control bus. Once a BMC module is in fault condition, the other BMC modules will take over the control without shutting down the system.
- In addition to fault redundant features, the Battery Management Control module can adjust the output voltage level of the bi-directional DC/DC converter modules within certain range in order to increase the torque of the motor (DC or AC) while additional torque is required for hill climbing. Thus, it can serve as an Electric Torque Control (ETC).
- Referring to
FIG. 1 andFIG. 2 , the modular battery management system is based on a redundant topology. Therefore, the detailed description on the first stage of Battery Power Conversion Module (BPCM) is explained here and it can be expanded to cover the system up to n stages where n is a positive integer. - The first Battery Power Conversion Module (BPCM) stage structure includes a
battery 101, which has positive (+) terminal, a negative (−) terminal and a battery temperature signal 1101. Thebattery 101 is connected to aBSM module 201. TheBSM 201 is an electrical circuit that monitors the battery conditions, for example the state of charge, the state of health, the battery temperature, and the charging condition/status, and feedbacks the information to a Battery Management System (BMS)control bus 1 through a signal path 601. Thecontrol signal 801, from theBSM control bus 1, will be used to display the battery operating status via status indication devices such as LEDs, a display panel or lamps, which may be charging, discharging, dead battery, being connected to the bi-directional DC/DC converter or disconnected from the bi-directional DC/DC converter). The output voltage of thebattery 101 is connected to theswitch 301. Theswitch 301 is an electrical activated switch, which is used to control the electrical connection between theBSM module 201 to the bi-directional DC/DC converter 401. Theswitch 301 is electrically controlled by a control signal 901, which is transmitted from the Battery Management Control (BMC) modules 1201, . . . , 120 n. Theswitch 301 can be manually disabled during maintenance or servicing. This is to avoid electrical hazard during maintenance or servicing. In addition, the signal 901 controls the ON or OFF status of the bi-directional DC/DC converter 401. If theswitch 301 is disabled by the signal 901 or by manual switching, the bi-directional DC/DC converter 401 will be disabled simultaneously. The bi-directional DC/DC converter 401 can be disabled by the control signal 1001 during maintenance or servicing. - The
battery 101's temperature signal 1101 is also connected to the bi-directional DC/DC converter 401. The bi-directional DC/DC converter module 401 will adjust the charging or discharging current in according to the signal 1101. The current distribution between different levels of bi-directional DC/DC converter modules is controlled through the current sharing signal bus 6, which can be analog or digital signal bus. The current sharing signal bus 6 is bi-directional. The bi-directional DC/DC converter module 401 has a current sharing signal output which is bi-directional and connected to the current sharing signal bus 6. Other bi-directional DC/DC converter modules' current sharing signal outputs are connected to the current sharing signal bus 6. The bi-directional DC/DC converter module 401 will adjust its output current according to the current sharing signal bus 6's voltage level or digital signal. The voltage level or digital information of the current sharing signal bus 6 represents the average load current for each bi-directional DC/DC converter module. The bi-directional DC/DC converter 401 will communicate with the BSM control bus through the bi-directional bus 701. The outputs of the bi-directional DC/DC converter modules are connected to a power bus 2. The power bus 2 connects theEnergy Storage modules 1401 up to 140 n, motor controller 3 (which can be single or multiple), an internal charging circuit 4 and anexternal charging circuit 5. TheEnergy Storage modules 1401 to 140 n are connected to the power bus 2 through theswitch 501 to 50 n respectively. Theswitches 501 to 50 n are electrically controlled by BMC module through control signals 1301 to 130 n respectively. The number of energy storage module activations is controlled by a program embedded in BMC. Theenergy storage modules 1401 to 140 n are configured to provide energy buffers during charging and discharging. In the charging mode, it will store energy from the external charging circuit, the regenerative braking power, and the internal electricity generator(s). This energy will be used to charge backbatteries 101 to 10 n through the bi-directional DC/DC converter modules 401 to 40 n respectively. In the discharge mode, it will provide power and energy to the motor controller as well as the surge load conditions so that the bi-directional DC/DC converter modules 401 to 40 n will not be overloaded. The Battery Management Control (BMC) modules 1201 to 120 n are connected and programmed in a redundancy topology. - If any of the BMC modules failed, the other BMC modules will seamlessly resume the functions of the failing module. The BMC modules are connected to the
BMS Control Bus 1 through thebi-directional communication buses 1501 to 150 n. - The
switches 301 to 30 n, 7, 8, and 9 are controlled by the battery management control modules 1201 to 120 n through the BMS control bus. When the vehicle is parked, theswitches 301 to 30 n, 7, 8, and 9 are turned OFF. When the vehicle starts up before the running condition, the switches 7 and 8 will be turned ON. The switch 8 will be turned OFF if battery (or cell) charging is not required. While external charging is required, the switch 9 will be turned ON and the switches 7 and 8 will be turned OFF. This is to prevent electrical over-stress to the motor controller 3 and the internal electricity generator(s) 4 during external charging. If the motor controller or electricity generator(s) are designed to be able to withstand the stress, the switches 7 and 8 can be turned ON. - Referring to
FIG. 2 , in this circuit implementation, the battery status monitoring module assemblies (201, 201, . . . 20 n) form an integral part of the system. The Bus A connector is connected to the BMS control bus. The connect/disconnect switch and the bi-directional DC/DC converter module forms the bi-directional DC/DC converter assembly which is an integral part of the systems. The Bus B connector is connected to the BMS control bus. The battery status monitoring module assemblies and bi-directional DC/DC converter assemblies are connected to the BMS control bus. The outputs of the bi-directional DC/DC converter assemblies are connected to the DC power bus (2) in parallel with each other. Likewise, the Battery management control modules are connected to the BMS control bus through the respective Bus A and Bus B connectors. The Bus C connector provides an interface between thevehicle signal interface 10 to the battery management control modules (1201, . . . , 120 n) through the BMS control bus. Thevehicle signal interface 10 is a control interface to Energy storage modules, internal charging circuits and external charging circuits. - In the aforementioned embodiments, the fault tolerant modular battery management system features multiple redundancy at all module levels. These redundancy features allow concurrent maintenance operations and provide multi-level fault tolerance. Therefore, the modular battery management system has improved reliability and availability. In addition, due to the modular design framework, the modules at all levels can be manufactured economically.
- In the aforementioned embodiments, individual element or module can be removed from or added to the MBMS without interruption to the system availability. The battery pack (or cell) can be removed from or added to the MBMS without interruption to the system availability. The BSM module can be removed from or added to the MBMS without interruption to the system availability. The bi-directional DC/DC converter module can be removed from or added to the MBMS without interruption to the system availability. The Energy Storage module can be removed from or added to the MBMS without interruption to the system availability. The BMC module can be removed from or added to the MBMS without interruption to the system availability.
- In the aforementioned embodiments, the MBMS provides a framework for EV or HEV or battery operated machines/equipments. This framework can be used for different battery types, power bus voltages, and output power requirements. The BSM and bi-directional DC/DC converter module can be combined as a single module (or unit) in a specific application. The battery packs (or cells) are operated individually instead of serial connected in conventional systems. The fault tolerant modular battery management system resolves the battery pack (or cell) imbalance problem that exists in conventional battery packs connected in series. The output voltage to the power bus is determined by the bi-directional DC/DC converter modules instead of the number of the battery packs (or cells) connected in series. When some of the battery packs (or cells) cannot provide an output power, the remaining battery packs (or cells) can provide a limited output power at a rated voltage to operate the motor driving circuits. The output current is provided by the sum of individual bi-directional DC/DC converter output currents.
- In the aforementioned embodiments, during charging mode, the energy is charged directly to Energy Storage (ES) module(s). This can speed up the charging cycle. The stored energy in Energy Storage (ES) module(s) then charges up the battery packs (or cells) through the bi-directional DC/DC converter modules. The battery packs (or cells) in the MBMS can operate in different modes of operation simultaneously. This includes battery discharging, battery charging, battery being connected to the MBMS and battery being disconnected from the MBMS. The individual battery packs (or cells) can be programmed in discharging or charging mode by the BMC module. During vehicle driving mode, the energy fed by internal electricity generator(s), regenerative braking and other power generation devices can charge up some or all battery packs (or cells) through the Energy Storage (ES) module(s) and bi-directional DC/DC converter module(s). This extends the range of vehicle traveling distance. The battery life span can be extended. MBMS output capacity can be increased by the addition of battery Power Conversion Modules (BPCM). The MBMS output capacity can be reduced by removal of battery packs (or cells), or Battery Power Conversion Modules (BPCMs). The MBMS output voltage can be adjusted by the adjustment of bi-directional DC/DC converters output voltage. The control algorithm embedded in the BMC module can be programmed for individual battery pack charging, discharging and being disconnected from the MBMS. The control algorithm inside the BMC module can be programmed for different battery characteristics, e.g., nickel-metal hydride NiHM, lithium-ion Li ion, lithium-ion Polymer and etc. The BMC module can be interfaced with a driver through a BMC display panel. Battery charging and discharging status, remaining energy level, and alert for battery maintenance information can be provided by the BMC display panel.
- In the aforementioned embodiments, the batteries can be a combination of different types. For example, Lead-acid and Lithium batteries can operate in the system simultaneously. The characteristic of high power density of lithium battery and deep cycle discharge of Lead-acid battery can contribute to a longer drive range.
- While the present patent application has been shown and described with particular references to a number of embodiments thereof, it should be noted that various other changes or modifications may be made without departing from the scope of the present invention.
Claims (20)
1. A modular battery management system for managing a plurality of batteries and driving a load, the system comprising: a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load; wherein: the bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries; and the battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules.
2. The modular battery management system of claim 1 , wherein the energy storage modules are capacitors, super capacitors, ultra capacitors, flywheels or any form of recyclable electric energy storage elements.
3. The modular battery management system of claim 1 , wherein the bi-directional voltage converter modules are configured to transfer electric energy from the energy storage modules to the batteries so as to charge the batteries when the voltage on the energy storage modules exceeds a predetermined value.
4. The modular battery management system of claim 1 , wherein the bi-directional voltage converter modules are respectively connected to the batteries through a first plurality of switches, the energy storage modules are respectively connected with the bi-directional voltage converter modules in parallel through a second plurality of switches, the load is connected to the energy storage modules through a third switch, and the first plurality of switches, the second plurality of switches and the third switch are controlled by the battery management control modules.
5. The modular battery management system of claim 1 further comprising a plurality of battery state monitoring modules respectively connected to the batteries, connected to the battery management control modules, and configured for monitoring the state of each battery and sending the state information of each battery to the battery management control modules, wherein the battery state monitoring modules and the bi-directional voltage converter modules are connected to the battery management control modules through a control bus.
6. The modular battery management system of claim 5 , wherein when one battery management control module stops working properly, the other battery management control modules are configured to resume the functions of the battery management control module.
7. The modular battery management system of claim 1 , wherein the battery management control modules are configured to adjust the output voltage levels of the bi-directional voltage converter modules based on an instruction from a user.
8. The modular battery management system of claim 4 , wherein the battery management control modules are configured to disable one of the first plurality of switches and the bi-directional voltage converter module connected with the switch simultaneously.
9. A modular battery management system for managing a plurality of batteries and driving a load, the system comprising: a plurality of battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries through a first plurality of switches and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel and connected to the load; wherein: the bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries; and the battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules and the first plurality of switches.
10. The modular battery management system of claim 9 , wherein the energy storage modules are capacitors, super capacitors, ultra capacitors, flywheels, or any form of recyclable electric energy storage elements.
11. The modular battery management system of claim 9 , wherein the bi-directional voltage converter modules are configured to transfer electric energy from the energy storage modules to the batteries so as to charge the batteries when the voltage on the energy storage modules exceeds a predetermined value.
12. The modular battery management system of claim 9 , wherein the battery management control modules are configured to disable one of the first plurality of switches and the bi-directional voltage converter module connected with the switch simultaneously.
13. The modular battery management system of claim 9 further comprising a plurality of battery state monitoring modules respectively connected to the batteries, connected to the battery management control modules, and configured for monitoring the state of each battery and sending the state information of each battery to the battery management control modules, wherein the battery state monitoring modules and the bi-directional voltage converter modules are connected to the battery management control modules through a control bus.
14. The modular battery management system of claim 13 , wherein when one battery management control module stops working properly, the other battery management control modules are configured to resume the functions of the battery management control module.
15. The modular battery management system of claim 9 , wherein the battery management control modules are configured to adjust the output voltage levels of the bi-directional voltage converter modules based on an instruction from a user.
16. A modular battery management system for managing a plurality of batteries and driving a load, the system comprising: a plurality of battery management control modules; a plurality of battery state monitoring modules respectively connected to the batteries, connected to the battery management control modules, and configured for monitoring the state of each battery and sending the state information of each battery to the battery management control modules; a plurality of bi-directional voltage converter modules respectively connected to the batteries through a first plurality of switches and connected to the battery management control modules, the bi-directional voltage converter modules being connected to each other in parallel; and a plurality of energy storage modules respectively connected with the bi-directional voltage converter modules in parallel through a second plurality of switches and connected to the load through a third switch; wherein: the bi-directional voltage converter modules are configured to transfer electric energy from the batteries to the load or from the energy storage modules to the batteries; the battery management control modules are configured to execute a predetermined program based on the state information of each battery and control the bi-directional voltage converter modules, the first plurality of switches, the second plurality of switches and the third switch; and the battery state monitoring modules and the bi-directional voltage converter modules are connected to the battery management control modules through a control bus.
17. The modular battery management system of claim 16 , wherein the bi-directional voltage converter modules are configured to transfer electric energy from the energy storage modules to the batteries so as to charge the batteries when the voltage on the energy storage modules exceeds a predetermined value.
18. The modular battery management system of claim 16 , wherein the battery management control modules are configured to disable one of the first plurality of switches and the bi-directional voltage converter module connected with the switch simultaneously.
19. The modular battery management system of claim 16 , wherein the battery management control modules are configured to adjust the output voltage levels of the bi-directional voltage converter modules based on an instruction from a user.
20. The modular battery management system of claim 16 , wherein the energy storage modules are capacitors, super capacitors, ultra capacitors, flywheels, or any form of recyclable electric energy storage elements.
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130294530A1 (en) * | 2012-05-07 | 2013-11-07 | Tesla Motors, Inc. | Redundant multistate signaling |
CN105691226A (en) * | 2016-01-21 | 2016-06-22 | 中国第汽车股份有限公司 | Fault handling system and handling method of lithium ion power battery system |
US20160282832A1 (en) * | 2015-03-26 | 2016-09-29 | Toyota Motor Engineering & Manufacturing North America, Inc. | Energy management system |
US9499064B2 (en) | 2012-07-23 | 2016-11-22 | Renault S.A.S. | Method for operating a motor vehicle including an electric power supply system |
US20180001781A1 (en) * | 2016-05-25 | 2018-01-04 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US20190039476A1 (en) * | 2017-08-02 | 2019-02-07 | Next-E Solutions Inc. | Management device, electric storage device, electric storage system and electric apparatus |
US20190267827A1 (en) * | 2016-11-15 | 2019-08-29 | Huawei Technologies Co., Ltd. | Charging and discharging apparatus |
NL2021063B1 (en) * | 2018-06-05 | 2019-12-11 | Atlas Technologies Holding Bv | Modular and rechargeable energy storage |
WO2020014474A1 (en) * | 2018-07-11 | 2020-01-16 | Cummins Inc. | Integration of second-use li-ion batteries in power generation |
US10913372B2 (en) | 2009-07-23 | 2021-02-09 | Chargepoint, Inc. | Managing electric current allocation between charging equipment for charging electric vehicles |
US10992144B2 (en) * | 2017-05-17 | 2021-04-27 | Galley Power LLC | Battery balancing and current control with bypass circuit for load switch |
GB2603798A (en) * | 2021-02-15 | 2022-08-17 | Vitesco Tech Gmbh | Automotive network zoned architecture with failure mitigation feature |
US20220278529A1 (en) * | 2021-03-01 | 2022-09-01 | Volvo Car Corporation | Balancing in electric vehicle battery systems |
US11433772B2 (en) | 2016-03-23 | 2022-09-06 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
WO2023102266A1 (en) * | 2021-12-03 | 2023-06-08 | Sustainable Energy Technologies, Inc. | A modular multi-type power pack charging apparatus |
US11951863B2 (en) | 2009-12-17 | 2024-04-09 | Chargepoint, Inc. | Method and apparatus for management of current load to an electric vehicle charging station in a residence |
Families Citing this family (110)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11888387B2 (en) | 2006-12-06 | 2024-01-30 | Solaredge Technologies Ltd. | Safety mechanisms, wake up and shutdown methods in distributed power installations |
US11735910B2 (en) | 2006-12-06 | 2023-08-22 | Solaredge Technologies Ltd. | Distributed power system using direct current power sources |
US11855231B2 (en) | 2006-12-06 | 2023-12-26 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US8947194B2 (en) | 2009-05-26 | 2015-02-03 | Solaredge Technologies Ltd. | Theft detection and prevention in a power generation system |
US11687112B2 (en) | 2006-12-06 | 2023-06-27 | Solaredge Technologies Ltd. | Distributed power harvesting systems using DC power sources |
US8319471B2 (en) | 2006-12-06 | 2012-11-27 | Solaredge, Ltd. | Battery power delivery module |
US8013472B2 (en) | 2006-12-06 | 2011-09-06 | Solaredge, Ltd. | Method for distributed power harvesting using DC power sources |
WO2011014595A2 (en) * | 2009-07-31 | 2011-02-03 | Thermo King Corporation | Bi-directional battery voltage converter |
TWM370883U (en) * | 2009-08-06 | 2009-12-11 | zhi-peng Zhang | Integrated device of multiple power batteries |
CN102110861A (en) * | 2009-12-25 | 2011-06-29 | 旭丽电子(广州)有限公司 | Method and system for protecting battery |
US9358897B2 (en) * | 2010-09-24 | 2016-06-07 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | Electric motor vehicle and redox flow module and cartridge therefor |
JP5651424B2 (en) * | 2010-10-14 | 2015-01-14 | 株式会社東芝 | Power stabilization system and power stabilization method |
GB2485527B (en) | 2010-11-09 | 2012-12-19 | Solaredge Technologies Ltd | Arc detection and prevention in a power generation system |
DE102011003764A1 (en) * | 2011-02-08 | 2012-08-09 | Robert Bosch Gmbh | Device and method for discharging an energy store in a high-voltage network |
EP2498368B1 (en) * | 2011-03-09 | 2014-08-06 | NIM Energy | Electrical energy buffering system |
KR101733742B1 (en) * | 2011-03-10 | 2017-05-25 | 삼성에스디아이 주식회사 | System for charging/discharging secondary battery and driving method thereof |
EP2686195B1 (en) * | 2011-03-16 | 2019-10-30 | CPS Technology Holdings LLC | Systems and methods for controlling multiple storage devices |
US8922063B2 (en) * | 2011-04-27 | 2014-12-30 | Green Charge Networks, Llc | Circuit for rendering energy storage devices parallelable |
JP6012144B2 (en) * | 2011-05-20 | 2016-10-25 | パナソニックエコソリューションズ電路株式会社 | Charge control system |
US9306465B2 (en) | 2011-06-10 | 2016-04-05 | Lear Corporation | Method for controlling a converter having variable frequency control and system for powering a vehicle load using same |
US20120319657A1 (en) * | 2011-06-16 | 2012-12-20 | O2 Micro USA | Battery management system |
CN102832657B (en) * | 2011-06-16 | 2015-03-25 | 凹凸电子(武汉)有限公司 | Battery management system and method |
DE102011106944A1 (en) * | 2011-07-08 | 2013-01-10 | Li-Tec Battery Gmbh | Battery management system for power supply system with low voltage range and high voltage range |
CN102336181A (en) * | 2011-08-09 | 2012-02-01 | 山东理工大学 | Integral power battery system convenient for fast exchange |
WO2013042474A1 (en) * | 2011-09-21 | 2013-03-28 | 日本電気株式会社 | Battery control system, battery control device, battery control method, and recording medium |
US9266434B2 (en) * | 2011-10-21 | 2016-02-23 | Robert Bosch Gmbh | Modular battery disconnect unit |
WO2013066867A2 (en) | 2011-10-31 | 2013-05-10 | Cobasys, Llc | Parallel configuration of series cells with semiconductor switching |
US9166419B2 (en) | 2011-10-31 | 2015-10-20 | Robert Bosch Gmbh | Intelligent charging and discharging system for parallel configuration of series cells with semiconductor switching |
GB2498365A (en) | 2012-01-11 | 2013-07-17 | Solaredge Technologies Ltd | Photovoltaic module |
GB2498790A (en) | 2012-01-30 | 2013-07-31 | Solaredge Technologies Ltd | Maximising power in a photovoltaic distributed power system |
GB2498791A (en) | 2012-01-30 | 2013-07-31 | Solaredge Technologies Ltd | Photovoltaic panel circuitry |
DE102012209740A1 (en) * | 2012-06-11 | 2013-12-12 | Varta Microbattery Gmbh | Method for operating battery, involves activating determined number of energy store modules based on instantaneous charging power or discharging power of battery so as to reduce power loss |
US9325192B2 (en) * | 2012-08-02 | 2016-04-26 | Nissan Motor Co., Ltd. | Battery charging management system for automated guided vehicle and battery charging management method for automated guided vehicle |
MY154243A (en) * | 2012-08-02 | 2015-05-18 | Nissan Motor | Battery charging management system of automated guided vehicle and battery charging management method |
EP2698841A1 (en) * | 2012-08-14 | 2014-02-19 | Panacis Inc. | Power Belt Share Pack |
US10224729B2 (en) | 2012-08-17 | 2019-03-05 | Nokia Technologies Oy | Battery hot swap capable apparatus |
FR2995263B1 (en) * | 2012-09-10 | 2015-08-21 | Batscap Sa | METHOD AND DEVICE FOR MANAGING ELECTRIC ENERGY STORAGE ASSEMBLIES FOR POWER SUPPLYING AN ELECTRIC MOTOR VEHICLE |
DE102013201221A1 (en) * | 2013-01-25 | 2014-07-31 | Robert Bosch Gmbh | Drive device for an electrical energy storage system |
JP5867870B2 (en) * | 2013-02-22 | 2016-02-24 | 富士通テレコムネットワークス株式会社 | Charge / discharge test system |
US9548619B2 (en) * | 2013-03-14 | 2017-01-17 | Solaredge Technologies Ltd. | Method and apparatus for storing and depleting energy |
TWI489754B (en) * | 2013-07-12 | 2015-06-21 | Univ Yuan Ze | Reversible multiple-input interleaving dc-dc converter |
DE102013219967A1 (en) * | 2013-10-01 | 2015-04-02 | Bayerische Motoren Werke Aktiengesellschaft | Device for providing a supply voltage for operating an electrical device of a vehicle |
DE102014201194A1 (en) | 2014-01-23 | 2015-07-23 | Robert Bosch Gmbh | Battery separator for interrupting a flow of current in a battery system |
US9457684B2 (en) | 2014-03-26 | 2016-10-04 | Ford Global Technologies, Llc | Redundant electrical power for autonomous vehicles |
JP6180982B2 (en) * | 2014-03-28 | 2017-08-16 | 本田技研工業株式会社 | vehicle |
US20170301477A1 (en) | 2016-04-04 | 2017-10-19 | Capacitor Sciences Incorporated | Electro-polarizable compound and capacitor |
SG11201609435WA (en) | 2014-05-12 | 2016-12-29 | Capacitor Sciences Inc | Energy storage device and method of production thereof |
US10340082B2 (en) | 2015-05-12 | 2019-07-02 | Capacitor Sciences Incorporated | Capacitor and method of production thereof |
US10347423B2 (en) | 2014-05-12 | 2019-07-09 | Capacitor Sciences Incorporated | Solid multilayer structure as semiproduct for meta-capacitor |
US10319523B2 (en) | 2014-05-12 | 2019-06-11 | Capacitor Sciences Incorporated | Yanli dielectric materials and capacitor thereof |
CN105337493A (en) * | 2014-06-13 | 2016-02-17 | 株式会社村田制作所 | Power conversion system and power conversion method |
DE102014214996A1 (en) * | 2014-07-30 | 2016-02-04 | Robert Bosch Gmbh | Method for operating a battery system |
CN104300660A (en) * | 2014-10-13 | 2015-01-21 | 柳州惠林科技有限责任公司 | Composite power supply management system |
DE102014114792A1 (en) | 2014-10-13 | 2016-04-14 | Thyssenkrupp Ag | Method for operating a power grid, in particular a power grid of a watercraft |
CN107592939B (en) | 2014-11-04 | 2020-05-05 | 电容器科学股份公司 | Energy storage device and method for producing same |
DE102015102410A1 (en) * | 2015-02-20 | 2016-08-25 | Vossloh Kiepe Gmbh | Battery assembly for a vehicle |
US9800071B2 (en) | 2015-02-24 | 2017-10-24 | Green Cubes Technology Corporation | Methods and system for add-on battery |
CN104590045B (en) * | 2015-02-26 | 2016-08-31 | 德阳东深新能源科技有限公司 | A kind of pure electric vehicle parallel charging system |
US9932358B2 (en) | 2015-05-21 | 2018-04-03 | Capacitor Science Incorporated | Energy storage molecular material, crystal dielectric layer and capacitor |
US9941051B2 (en) | 2015-06-26 | 2018-04-10 | Capactor Sciences Incorporated | Coiled capacitor |
US10103411B2 (en) | 2015-07-06 | 2018-10-16 | Lear Corporation | Multiple voltage battery pack with common battery management system |
WO2017023869A1 (en) * | 2015-07-31 | 2017-02-09 | O'hora Gerard | Portable and modular energy storage for multiple applications and electric vehicles |
DE102015219590B4 (en) * | 2015-10-09 | 2017-09-14 | Continental Automotive Gmbh | Vehicle electrical system |
US10026553B2 (en) | 2015-10-21 | 2018-07-17 | Capacitor Sciences Incorporated | Organic compound, crystal dielectric layer and capacitor |
KR102516355B1 (en) * | 2015-12-21 | 2023-03-31 | 삼성전자주식회사 | Method and apparatus of controlling battery, and battery pack enabling the method |
CN105490363A (en) * | 2016-01-06 | 2016-04-13 | 北京新能源汽车股份有限公司 | Vehicle-mounted bidirectional charger and electric vehicle |
US11095129B2 (en) * | 2016-02-12 | 2021-08-17 | Capacitor Sciences Incorporated | Capacitor based power system and unmanned vehicle with the capacitor based power system thereof |
CN109496381A (en) * | 2016-02-12 | 2019-03-19 | 电容器科学股份公司 | Capacitative energy storage unit, capacitative energy memory module and capacitative energy storage system |
US10305295B2 (en) * | 2016-02-12 | 2019-05-28 | Capacitor Sciences Incorporated | Energy storage cell, capacitive energy storage module, and capacitive energy storage system |
US10636575B2 (en) | 2016-02-12 | 2020-04-28 | Capacitor Sciences Incorporated | Furuta and para-Furuta polymer formulations and capacitors |
US10236696B2 (en) | 2016-03-01 | 2019-03-19 | Toyota Motor Engineering & Manufacturing North America, Inc. | System and method for controlling a modular energy management system that controls an amount of power transferred from each of the energy modules to at least one load |
US9978517B2 (en) | 2016-04-04 | 2018-05-22 | Capacitor Sciences Incorporated | Electro-polarizable compound and capacitor |
US10153087B2 (en) | 2016-04-04 | 2018-12-11 | Capacitor Sciences Incorporated | Electro-polarizable compound and capacitor |
US12057807B2 (en) | 2016-04-05 | 2024-08-06 | Solaredge Technologies Ltd. | Chain of power devices |
US11177663B2 (en) | 2016-04-05 | 2021-11-16 | Solaredge Technologies Ltd. | Chain of power devices |
GB2552506B (en) * | 2016-07-26 | 2020-04-01 | Ford Global Tech Llc | A battery system |
DE102016219452A1 (en) * | 2016-10-07 | 2018-04-12 | Robert Bosch Gmbh | Battery unit and method for operating a battery unit |
US10395841B2 (en) | 2016-12-02 | 2019-08-27 | Capacitor Sciences Incorporated | Multilayered electrode and film energy storage device |
WO2018107065A1 (en) | 2016-12-11 | 2018-06-14 | Sandeep Agarwal | Smart energy storage system |
KR102072904B1 (en) * | 2017-02-28 | 2020-02-04 | 김홍식 | Power-loop train system for electric vehicle and method for operating electric vehicle using the same |
WO2019043273A1 (en) * | 2017-08-30 | 2019-03-07 | Bernabe Panos Jorge Jose | Recharging system for electric vehicles |
DE102017222192A1 (en) * | 2017-12-07 | 2019-06-13 | Audi Ag | HV battery assembly for a motor vehicle, electrical system, motor vehicle and method for controlling a HV battery assembly |
CN108255280A (en) * | 2018-01-16 | 2018-07-06 | 郑州云海信息技术有限公司 | A kind of double power mode setting methods of list, system, equipment and computer storage media |
CN110198056B (en) * | 2018-02-26 | 2024-04-09 | 周锡卫 | Control method of multi-alternating-current energy storage module system suitable for manual power exchange |
JP7020293B2 (en) * | 2018-05-25 | 2022-02-16 | トヨタ自動車株式会社 | Battery discharge controller |
CN108944538A (en) * | 2018-08-03 | 2018-12-07 | 佛山市苔藓云链科技有限公司 | A kind of system for distributing electric power in electric vehicle |
US10960776B2 (en) * | 2018-08-17 | 2021-03-30 | Zoox, Inc. | Redundant battery management system architecture |
CN109193909A (en) * | 2018-09-28 | 2019-01-11 | 深圳宇拓瑞科新能源科技有限公司 | A kind of pair of battery in battery pack management method and system |
CN109309398B (en) * | 2018-09-30 | 2023-09-19 | 联想(北京)有限公司 | Processing method and power supply device |
DE102019100338A1 (en) | 2019-01-08 | 2020-07-09 | Volkswagen Aktiengesellschaft | Battery system for electric vehicles or hybrid electric vehicles |
CN111711253A (en) * | 2019-03-18 | 2020-09-25 | 深圳市瑞能实业股份有限公司 | Control system and control method for battery formation and capacity grading and electric energy management system |
CN110085926B (en) * | 2019-04-11 | 2021-02-09 | 华中科技大学 | Lithium battery system with self-repairing function and self-repairing method thereof |
CN110254288A (en) * | 2019-06-10 | 2019-09-20 | 帝亚一维新能源汽车有限公司 | Battery pack control system |
CN110182103A (en) * | 2019-06-26 | 2019-08-30 | 上海海得控制系统股份有限公司 | A kind of Novel power system |
KR20220131546A (en) | 2020-02-03 | 2022-09-28 | 위스크 에어로 엘엘씨 | Power distribution circuit for vehicle with energy regenerative function |
CN111439107A (en) * | 2020-04-26 | 2020-07-24 | 南京电瓶居汽配有限公司 | Lead-acid battery with start and stop functions |
FR3112900B1 (en) | 2020-07-27 | 2022-07-29 | Limatech | Serial modular block (B l M o S e ) |
US10992149B1 (en) | 2020-10-08 | 2021-04-27 | Element Energy, Inc. | Safe battery energy management systems, battery management system nodes, and methods |
US11791642B2 (en) * | 2020-10-08 | 2023-10-17 | Element Energy, Inc. | Safe battery energy management systems, battery management system nodes, and methods |
KR102546401B1 (en) * | 2020-12-28 | 2023-06-22 | (주)오토노머스에이투지 | Method and device for switching power sources of vehicle test equipment without suspension of vehicle test process |
CN113147631B (en) * | 2021-05-06 | 2023-03-31 | 重庆金康赛力斯新能源汽车设计院有限公司 | Output power determination method of low-voltage converter and related equipment |
WO2023037362A1 (en) * | 2021-09-06 | 2023-03-16 | Sparkion Power Algorithms Ltd | Flip switch system for rechargeable power storage devices |
CN114156547A (en) * | 2021-10-27 | 2022-03-08 | 烟台东方电子玉麟电气有限公司 | Lithium battery management system and method |
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US20230294551A1 (en) * | 2022-03-18 | 2023-09-21 | Ample Inc. | Multi-Module Electric Vehicle Battery Control System |
DE102022115263B4 (en) | 2022-06-20 | 2024-04-11 | Lisa Dräxlmaier GmbH | METHOD FOR DETERMINING AN AGING STATE OF A VEHICLE BATTERY AND VEHICLE BATTERY WITH AT LEAST ONE REMOVABLE BATTERY CELL |
US11710957B1 (en) | 2022-10-07 | 2023-07-25 | Archer Aviation, Inc. | Systems and methods for redundant control of active fuses for battery pack safety |
CN115483744A (en) * | 2022-10-17 | 2022-12-16 | 阳光电源股份有限公司 | Conversion power supply and automatic power supplementing method of energy storage system |
FR3141821A1 (en) * | 2022-11-09 | 2024-05-10 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Electrical power system for vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080218104A1 (en) * | 2007-03-09 | 2008-09-11 | Srdjan Lukic | Power management for multi-module energy storage systems in electric, hybrid electric, and fuel cell vehicles |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5751150A (en) * | 1995-08-11 | 1998-05-12 | Aerovironment | Bidirectional load and source cycler |
JP2004147477A (en) * | 2002-10-28 | 2004-05-20 | Komatsu Ltd | Power supply device for motor |
JP2006312352A (en) * | 2005-05-06 | 2006-11-16 | Toyota Motor Corp | Control device for driving system |
JP5022623B2 (en) * | 2006-04-27 | 2012-09-12 | 株式会社日立製作所 | Elevator system and battery unit |
JP4586832B2 (en) * | 2007-08-10 | 2010-11-24 | トヨタ自動車株式会社 | Electric vehicle |
CN101409526B (en) * | 2007-10-10 | 2012-03-28 | 株式会社日立制作所 | Elevator system and accumulator unit |
TW200919894A (en) * | 2007-10-17 | 2009-05-01 | J Tek Inc | High-reliability intelligent parallel-connected energy storage vessel charging/discharging management system |
-
2010
- 2010-03-12 US US12/722,542 patent/US8410755B2/en active Active
- 2010-03-12 DE DE212010000081U patent/DE212010000081U1/en not_active Expired - Lifetime
- 2010-03-12 JP JP2012600020U patent/JP3176361U/en not_active Expired - Fee Related
- 2010-03-12 KR KR1020117028285A patent/KR101482300B1/en active IP Right Grant
- 2010-03-12 WO PCT/CN2010/071012 patent/WO2010145230A1/en active Application Filing
- 2010-05-31 CN CN201020221029XU patent/CN202009239U/en not_active Expired - Fee Related
- 2010-05-31 CN CN2010102004776A patent/CN101924380B/en not_active Expired - Fee Related
-
2011
- 2011-02-08 HK HK11101205.6A patent/HK1147851A1/en not_active IP Right Cessation
-
2013
- 2013-03-06 US US13/786,472 patent/US20130181680A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080218104A1 (en) * | 2007-03-09 | 2008-09-11 | Srdjan Lukic | Power management for multi-module energy storage systems in electric, hybrid electric, and fuel cell vehicles |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11780345B2 (en) | 2009-07-23 | 2023-10-10 | Chargepoint, Inc. | Managing electric current allocation between charging equipment for charging electric vehicles |
US10913372B2 (en) | 2009-07-23 | 2021-02-09 | Chargepoint, Inc. | Managing electric current allocation between charging equipment for charging electric vehicles |
US11951863B2 (en) | 2009-12-17 | 2024-04-09 | Chargepoint, Inc. | Method and apparatus for management of current load to an electric vehicle charging station in a residence |
US20130294530A1 (en) * | 2012-05-07 | 2013-11-07 | Tesla Motors, Inc. | Redundant multistate signaling |
US8817892B2 (en) * | 2012-05-07 | 2014-08-26 | Tesla Motors, Inc. | Redundant multistate signaling |
US9568534B2 (en) | 2012-05-07 | 2017-02-14 | Tesla Motors, Inc. | Battery electronics system |
US9499064B2 (en) | 2012-07-23 | 2016-11-22 | Renault S.A.S. | Method for operating a motor vehicle including an electric power supply system |
US9923372B2 (en) * | 2015-03-26 | 2018-03-20 | Toyota Motor Engineering & Manufacturing North America, Inc. | Energy management system |
US20160282832A1 (en) * | 2015-03-26 | 2016-09-29 | Toyota Motor Engineering & Manufacturing North America, Inc. | Energy management system |
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US11433772B2 (en) | 2016-03-23 | 2022-09-06 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US11148551B2 (en) | 2016-05-25 | 2021-10-19 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US11813959B2 (en) | 2016-05-25 | 2023-11-14 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US20180001781A1 (en) * | 2016-05-25 | 2018-01-04 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US10744883B2 (en) * | 2016-05-25 | 2020-08-18 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US11135940B2 (en) | 2016-05-25 | 2021-10-05 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US11958380B2 (en) | 2016-05-25 | 2024-04-16 | Chargepoint, Inc. | Dynamic allocation of power modules for charging electric vehicles |
US10847991B2 (en) * | 2016-11-15 | 2020-11-24 | Huawei Technologies Co., Ltd. | Multiple bidirectional converters for charging and discharging of energy storage units |
US20190267827A1 (en) * | 2016-11-15 | 2019-08-29 | Huawei Technologies Co., Ltd. | Charging and discharging apparatus |
US10992144B2 (en) * | 2017-05-17 | 2021-04-27 | Galley Power LLC | Battery balancing and current control with bypass circuit for load switch |
US11027614B2 (en) * | 2017-08-02 | 2021-06-08 | Next-E Solutions Inc. | Management device, electric storage device, electric storage system and electric apparatus for managing charging and discharging of a plurality of electric storage cells connected in series |
US20190039476A1 (en) * | 2017-08-02 | 2019-02-07 | Next-E Solutions Inc. | Management device, electric storage device, electric storage system and electric apparatus |
NL2021063B1 (en) * | 2018-06-05 | 2019-12-11 | Atlas Technologies Holding Bv | Modular and rechargeable energy storage |
WO2020014474A1 (en) * | 2018-07-11 | 2020-01-16 | Cummins Inc. | Integration of second-use li-ion batteries in power generation |
US11881735B2 (en) | 2018-07-11 | 2024-01-23 | Cummins Inc. | Integration of second-use of Li-ion batteries in power generation |
GB2603798A (en) * | 2021-02-15 | 2022-08-17 | Vitesco Tech Gmbh | Automotive network zoned architecture with failure mitigation feature |
US20220278529A1 (en) * | 2021-03-01 | 2022-09-01 | Volvo Car Corporation | Balancing in electric vehicle battery systems |
WO2023102266A1 (en) * | 2021-12-03 | 2023-06-08 | Sustainable Energy Technologies, Inc. | A modular multi-type power pack charging apparatus |
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US8410755B2 (en) | 2013-04-02 |
KR101482300B1 (en) | 2015-01-14 |
CN101924380A (en) | 2010-12-22 |
KR20120037375A (en) | 2012-04-19 |
WO2010145230A1 (en) | 2010-12-23 |
DE212010000081U1 (en) | 2012-03-06 |
CN101924380B (en) | 2013-06-26 |
JP3176361U (en) | 2012-06-21 |
CN202009239U (en) | 2011-10-12 |
HK1147851A1 (en) | 2011-08-19 |
US20100315043A1 (en) | 2010-12-16 |
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