WO2022222156A1 - Procédé et appareil de commande d'alimentation électrique de batterie, plateforme mobile, et support de stockage - Google Patents

Procédé et appareil de commande d'alimentation électrique de batterie, plateforme mobile, et support de stockage Download PDF

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Publication number
WO2022222156A1
WO2022222156A1 PCT/CN2021/089441 CN2021089441W WO2022222156A1 WO 2022222156 A1 WO2022222156 A1 WO 2022222156A1 CN 2021089441 W CN2021089441 W CN 2021089441W WO 2022222156 A1 WO2022222156 A1 WO 2022222156A1
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WIPO (PCT)
Prior art keywords
battery
power supply
series
processor
movable platform
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Application number
PCT/CN2021/089441
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English (en)
Chinese (zh)
Inventor
龙玉其
廖洲
Original Assignee
深圳市大疆创新科技有限公司
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Priority to PCT/CN2021/089441 priority Critical patent/WO2022222156A1/fr
Publication of WO2022222156A1 publication Critical patent/WO2022222156A1/fr

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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

Definitions

  • the present application relates to the technical field of movable platforms, and in particular, to a battery power supply control method, device, movable platform and storage medium.
  • the present application provides a battery power supply control method, device, movable platform and storage medium, so as to realize the balance of cost and power supply of the movable platform.
  • the present application provides a battery power supply control method, including:
  • the switch assembly is controlled to switch so that the main power supply battery is connected in series with the low-voltage device, so as to use the main power supply battery as the low-voltage device. voltage device power supply.
  • the present application also provides a battery-powered control device, the battery-powered control device comprising a memory and a processor;
  • the memory is used to store computer programs
  • the processor is configured to execute the computer program and implement the following steps when executing the computer program:
  • the switch assembly is controlled to switch so that the main power supply battery is connected in series with the low-voltage device, so as to use the main power supply battery as the low-voltage device. voltage device power supply.
  • the present application also provides a movable platform, the movable platform includes a plurality of batteries in series, and the battery-powered control device as described above.
  • the present application also provides a battery power supply control method, including:
  • the first battery is controlled to charge the second battery, so as to balance the power supply of the first battery and the second battery.
  • the present application further provides a battery-powered control device, the battery-powered control device comprising a memory and a processor;
  • the memory is used to store computer programs
  • the processor is configured to execute the computer program and implement the following steps when executing the computer program:
  • the first battery is controlled to charge the second battery, so as to balance the power supply of the first battery and the second battery.
  • the present application further provides a movable platform, the movable platform includes a first battery and a second battery, and the above-mentioned battery-powered control device.
  • the present application also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor implements the above-mentioned battery-powered control method.
  • the battery power supply control method, device, movable platform and storage medium disclosed in the present application utilize multiple batteries to supply power to the devices of the movable platform without setting a high-voltage to low-voltage step-down circuit, thus achieving both The cost and power supply of the mobile platform is balanced.
  • FIG. 1 is a schematic structural diagram of a movable platform provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a circuit for supplying power to a low-voltage device provided by an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of another movable platform provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a circuit structure for supplying power to a high-voltage device and a low-voltage device provided by an embodiment of the present application;
  • FIG. 5 is a schematic flowchart of steps of a battery power supply control method provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the circuit structure of another high-voltage device and a low-voltage device for power supply provided by an embodiment of the present application;
  • FIG. 7 is a schematic flowchart of steps of another battery power supply control method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of steps of another battery power supply control method provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a battery-powered control device provided by an embodiment of the present application.
  • Embodiments of the present application provide a battery power supply control method, device, movable platform, and storage medium, which are used to achieve balance between cost and power supply of the movable platform.
  • FIG. 1 is a schematic structural diagram of a movable platform according to an embodiment of the present application.
  • the movable platform 1000 may include a high voltage device 100 , a low voltage device 200 , a battery 300 , a battery powered control device 400 , and a switch assembly 500 .
  • the battery 300 includes a plurality of batteries 300 connected in series, and the plurality of batteries 300 connected in series together supply power to the high-voltage device 100 ; at the same time, the battery power supply control device 400 can control any of the batteries 300 to connect to the low-voltage device 100 via the switch assembly 500 .
  • the device 200 forms a series loop to supply power to the low-voltage device 200 .
  • the high-voltage device 100 includes, but is not limited to, the power motor of the movable platform 1000, the pan-tilt motor, and the like.
  • the low voltage device 200 includes, but is not limited to, processors, sensors, and the like of the movable platform 1000 .
  • the switch assembly 500 includes, but is not limited to, a multi-pole multi-throw switch, a plurality of MOS transistors, and the like.
  • the battery power supply control device 400 controls the switch assembly 500 to connect the low voltage device 200 with any one of the batteries 300 in series. If the switch assembly 500 includes a plurality of MOS transistors, the positive electrode and the negative electrode of each battery 300 are respectively connected to different MOS transistors.
  • the battery 300 includes a first battery V1 and a second battery V2 connected in series
  • the switch component 500 is four MOS transistors: MOS1, MOS2, MOS3 and MOS4, wherein the first battery V1 has four MOS transistors.
  • the positive pole is connected to MOS1, the negative pole of the first battery V1 is connected to MOS2 and MOS3, the positive pole of the second battery V2 is connected to MOS3 and MOS2, the negative pole of the second battery V2 is connected to MOS4, and the positive pole of the first battery V1 is connected to the negative pole of the second battery V2.
  • MOS2 and MOS4 are controlled to be turned off, MOS1 and MOS3 are turned on, the first battery V1 and the low-voltage device form a series circuit, and the low-voltage device is powered through the first battery V1;
  • GMOS1 and MOS3 are controlled to be turned off, and MOS2 and MOS4 are turned on.
  • the second battery V2 forms a series circuit with the low-voltage device, and supplies power to the low-voltage device through the second battery V2. Therefore, the situation that only one battery is used to supply power to the low-voltage device is avoided, thereby achieving the effect of battery power supply balance.
  • the movable platform 1000 may include a high-voltage device 100 , a low-voltage device 200 , a battery-powered control device 400 , a first battery 600 and a second battery 700 .
  • the first battery 600 is used for powering the high voltage device 100
  • the second battery 700 is used for powering the low voltage device 200 .
  • the first battery 600 and the second battery 700 may be a single battery or a battery pack.
  • the battery power supply control device 400 can control the first battery 600 to charge the second battery 700 , so as to balance the power supply of the first battery 600 and the second battery 700 .
  • the battery power supply control device 400 includes a power calculation and comparison module and a balance and path management module, and the power calculation and comparison module monitors the power percentages of the first battery and the second battery.
  • the equalization and path management module performs equalization control, starts the equalization circuit, and the first battery supplies power to the second battery based on the equalization circuit, until the first battery and the second battery.
  • the equalization control is stopped, and the first battery stops supplying power to the second battery.
  • the values of the threshold value A and the threshold value B may be the same or different, and the specific values of the threshold value A and the threshold value B are not limited.
  • the battery power control method provided by the embodiments of the present application will be described in detail below based on the movable platform 1000 and the battery power control device 400 . It should be noted that the movable platform 1000 and the battery power supply control device 400 in FIG. 1 and FIG. 3 are only used to explain the battery power supply control method provided by the embodiment of the present application, but do not constitute a reference to the battery power supply control method provided by the embodiment of the present application. Limitation of application scenarios.
  • FIG. 5 is a schematic flowchart of a battery power supply control method provided by an embodiment of the present application.
  • the method can be used in the movable platform provided in the above-mentioned embodiment, and can also be used in other devices including a battery-powered control device, and the application scenarios of the method are not limited in this application. Based on the battery power supply control method, both cost and power supply balance can be achieved.
  • the battery power supply control method specifically includes steps S101 to S103 .
  • the movable platform uses multiple series-connected batteries to supply power to its various devices.
  • a series circuit is formed with multiple batteries, and multiple batteries connected in series are used. together to power high voltage devices.
  • the low-voltage device can form a series circuit with any one of the multiple series-connected batteries through the switch assembly, and select the currently suitable battery from the multiple batteries based on the energy supply information of each battery. Powers low voltage devices.
  • the energy supply information of the battery includes at least one of power and voltage, that is, the current power and/or voltage of each battery is acquired.
  • a corresponding battery is selected from a plurality of series-connected batteries to determine the current main power supply battery, and the main power supply battery is used to supply power for low-voltage devices.
  • the battery with the highest power among the plurality of series-connected batteries is determined as the main power supply battery.
  • the main power supply battery is continued to be used to supply power to the low-voltage device.
  • the switch assembly is controlled to connect the main power supply battery and the low voltage device in series, that is, the main power supply battery is controlled to be switched to supply power to the low voltage device.
  • the switch assembly includes a plurality of MOS transistors, and the positive electrode and the negative electrode of each battery are respectively connected to different MOS transistors.
  • Controlling the switch assembly to connect the main power supply battery in series with the low-voltage device may include: controlling the conduction of a first MOS transistor connected to the positive electrode of the main power supply battery and a second MOS transistor connected to the negative electrode of the main power supply battery, and other MOS transistors except the first MOS transistor and the second MOS transistor are turned off, so that the main power supply battery is connected in series with the low-voltage device.
  • the battery includes a first battery V1 and a second battery V2 connected in series, and the switch components are four MOS transistors: MOS1, MOS2, MOS3 and MOS4, wherein the first battery V1 has four MOS transistors.
  • the positive pole is connected to MOS1, the negative pole of the first battery V1 is connected to MOS2 and MOS3, the positive pole of the second battery V2 is connected to MOS3 and MOS2, the negative pole of the second battery V2 is connected to MOS4, and the positive pole of the first battery V1 is connected to the negative pole of the second battery V2.
  • the first battery V1 By obtaining the power of the first battery V1 and the second battery V2, if the power of the first battery V1 is higher than that of the second battery V2, it is determined that the first battery V1 is the main power supply battery. And MOS3 is turned on, the first battery V1 and the low-voltage device form a series loop, and the low-voltage device is powered by the first battery V1.
  • the second battery V2 is the main power supply battery. At this time, GMOS1 and MOS3 are controlled to be turned off, MOS2 and MOS4 are turned on, and the second battery V2 is composed of a low-voltage device. A series loop is used to supply power to the low-voltage device through the second battery V2.
  • different batteries are determined as the main power supply batteries to supply power for low-voltage devices, so as to avoid using only one battery to supply power to low-voltage devices, and achieve the effect of battery power supply balance.
  • acquiring the current energy supply information of each battery in the plurality of series-connected batteries of the movable platform may include: periodically acquiring the current energy supply information of each battery according to a preset cycle time.
  • the cycle time can be flexibly set according to practical application scenarios such as battery parameters.
  • a plurality of series-connected batteries of the movable platform are constantly monitored, and the current energy supply information of each battery is obtained every other cycle time according to the preset cycle time.
  • the main power supply battery is determined according to the current energy supply information of each battery, and the main power supply battery is controlled to supply power to the low-voltage device. That is, during the working process of the movable platform, the battery power supply balance is realized by continuously switching the main power supply battery to supply power to the low-voltage device.
  • the battery power control method may further include: displaying a preset battery control setting interface for the user to update the cycle time based on the battery control setting interface; and saving the updated cycle time.
  • the cycle time can be independently modified by the user.
  • a preset battery control setting interface is displayed on a display device such as a display screen of the movable platform, and cycle time setting options are displayed on the battery control setting interface, and the user can set options for the cycle time on the battery control setting interface. Operation is performed to set the cycle time for obtaining the current energy supply information of each battery.
  • the updated cycle time set by the user is received, the updated cycle time is saved. Afterwards, the current energy supply information of each battery is periodically acquired according to the updated cycle time by querying the stored updated cycle time.
  • a plurality of batteries connected in series can be used to supply power to the high-voltage devices of the movable platform.
  • each battery can form a series circuit with the corresponding low-voltage device, and each battery can supply power to the low-voltage device.
  • the GND-120V voltage corresponding to battery 1 and battery 2 in series can supply power for high-voltage devices such as power motors.
  • the voltage of GND-60V is used to supply power to low-voltage devices such as centrifugal nozzles
  • the voltage of 60V-120V corresponding to battery 2 is used to supply power to low-voltage devices such as centrifugal nozzles.
  • the above-mentioned embodiment supplies power to the high-voltage devices of the movable platform through a plurality of batteries connected in series.
  • Power supply battery if the current power supply battery of the low-voltage device is not the main power supply battery, the control switching uses the main power supply battery to supply power for the low-voltage device, which achieves the power supply balance of multiple batteries, and also eliminates the need to set a step-down circuit, that is, to achieve In order to take into account the cost and power supply balance of the mobile platform.
  • FIG. 7 is a schematic flowchart of another battery power supply control method provided by an embodiment of the present application.
  • the battery power supply control method specifically includes steps S201 to S203.
  • S201 Acquire current energy supply information of a first battery and a second battery of a movable platform, wherein the first battery is used to supply power to high-voltage devices of the movable platform, and the second battery is used to supply power to all the high-voltage devices of the movable platform. supply power to the low-voltage devices of the movable platform.
  • the movable platform uses the first battery to power the high-voltage device, and the second battery to power the low-voltage device.
  • the high-voltage device includes at least one of a power motor and a pan-tilt motor
  • the low-voltage device includes at least one of a processor and a sensor.
  • the first battery and the second battery may be a single battery or a battery pack.
  • the energy supply information of the first battery and the second battery includes at least one of electric power and electric power percentage, that is, the electric power or electric power percentage of the first battery and the second battery is obtained.
  • step S202 Determine whether the first battery and the second battery meet a preset equalization control condition according to the energy supply information; if yes, go to step S203, if not, go back to step S201.
  • S203 Control the first battery to charge the second battery, so as to balance the power supply of the first battery and the second battery.
  • the balance control condition includes at least one of the following: the percentage difference between the power of the first battery and the second battery is greater than a first preset threshold; or the difference between the power of the first battery and the second battery greater than the second preset threshold.
  • the first battery and the second battery satisfy the balance control. condition.
  • the power difference between the first battery and the second battery is greater than the second preset threshold, it is determined that the first battery and the second battery satisfy the balance control condition.
  • the difference in percentage of power between the first battery and the second battery is less than or equal to the first preset threshold, it is determined that the first battery and the second battery do not meet the equalization control condition.
  • the power difference between the first battery and the second battery is less than or equal to the second preset threshold, it is determined that the first battery and the second battery do not meet the equalization control condition.
  • first preset threshold and the second preset threshold can be flexibly set according to actual conditions, and are not specifically limited herein.
  • first battery and the second battery do not meet the equalization control conditions, it means that the power supply of the first battery and the second battery are balanced.
  • the first battery and the second battery meet the balance control conditions, it means that the power supply of the first battery and the second battery is unbalanced.
  • the first battery is controlled to charge the second battery, and the second battery is charged through the first battery, so that the The power supply of the first battery and the second battery is balanced.
  • a balance circuit is provided between the first battery and the second battery, and when the first battery and the second battery do not meet the balance control condition, that is, when the power supply of the first battery and the second battery is balanced, the balance circuit is controlled.
  • the circuit is open and the first battery cannot charge the second battery.
  • the control balance circuit is turned on, so that the first battery charges the second battery.
  • the equalization enable control signal is output to the equalization circuit, and the equalization circuit is controlled to be turned on.
  • step S204 and step S205 may be further included after step S203 .
  • step S204 judging whether the power supply of the first battery and the second battery is balanced; if yes, go to step S205 ; if not, go back to go to step S203 .
  • the percentage of electricity of the first battery and the second battery is obtained, and the difference between the percentage of electricity of the first battery and the second battery is obtained by calculation, if the difference of the percentage of electricity of the first battery and the second battery is less than the third preset value If the threshold value is reached, it is determined that the power supply of the first battery and the second battery is balanced.
  • the third preset threshold and the first preset threshold may be the same value or different values, which are not specifically limited herein.
  • the control equalization circuit is disconnected, so that the first battery is terminated as The second battery is charged.
  • the first battery supplies power to the high-voltage devices of the movable platform
  • the second battery supplies power to the low-voltage devices of the movable platform.
  • the current energy supply information of the first battery and the second battery is obtained, and Determine whether the first battery and the second battery meet the preset balance control conditions, and if the balance control conditions are met, control the first battery to charge the second battery to balance the power supply of the first battery and the second battery, and do not need
  • a step-down circuit is provided, therefore, the cost and power supply balance of the mobile platform is achieved.
  • FIG. 9 is a schematic block diagram of a battery-powered control device provided by an embodiment of the present application.
  • the battery power supply control device 400 may include a processor 411 and a memory 412, and the processor 411 and the memory 412 are connected through a bus, such as an I2C (Inter-integrated Circuit) bus.
  • a bus such as an I2C (Inter-integrated Circuit) bus.
  • the processor 411 may be a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP) or the like.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 412 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, or a removable hard disk, and the like.
  • Various computer programs to be executed by the processor 411 are stored in the memory 412 .
  • the processor is used for running the computer program stored in the memory, and implements the following steps when executing the computer program:
  • the switch assembly is controlled to switch so that the main power supply battery is connected in series with the low-voltage device, so as to use the main power supply battery as the low-voltage device. voltage device power supply.
  • the energy supply information includes at least one of electric quantity and voltage.
  • the energy supply information includes an electric quantity
  • the processor determines the main supply battery from the plurality of series-connected batteries according to the current energy supply information of each battery, the processor is configured to: accomplish:
  • the battery with the highest power among the plurality of series-connected batteries is determined as the main power supply battery.
  • the switch assembly includes a plurality of MOS transistors, and the positive electrode and the negative electrode of each battery are respectively connected to different MOS transistors;
  • the processor implements the control to switch the switch component so that the main power supply battery is connected in series with the low-voltage device
  • the processor is configured to implement:
  • the processor when the processor implements the acquiring current energy supply information of each battery in the plurality of series-connected batteries of the movable platform, the processor is configured to implement:
  • the current energy supply information of each battery is periodically acquired.
  • the processor is further configured to:
  • the updated cycle time is saved.
  • Embodiments of the present application also provide a battery-powered control device, which may include a processor and a memory, where the processor and the memory are connected through a bus, such as an I2C (Inter-integrated Circuit) bus.
  • a bus such as an I2C (Inter-integrated Circuit) bus.
  • the processor may be a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP) or the like.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, a mobile hard disk, and the like.
  • the memory stores various computer programs for execution by the processor.
  • the processor is used for running the computer program stored in the memory, and implements the following steps when executing the computer program:
  • the first battery is controlled to charge the second battery, so as to balance the power supply of the first battery and the second battery.
  • the energy supply information includes at least one of electric power and electric power percentage.
  • the equalization control conditions include at least one of the following:
  • the percentage difference between the power of the first battery and the second battery is greater than a first preset threshold
  • the power difference between the first battery and the second battery is greater than a second preset threshold.
  • the high-voltage device includes at least one of a power motor and a pan/tilt motor
  • the low-voltage device includes at least one of a processor and a sensor.
  • an equalization circuit is provided between the first battery and the second battery, and when the first battery and the second battery do not meet the equalization control condition, the equalization circuit is turned off open;
  • the processor controls the first battery to charge the second battery
  • the processor is configured to:
  • the equalization circuit is controlled to be turned on, so that the first battery charges the second battery based on the equalization circuit.
  • the processor when the processor controls the equalization circuit to be turned on, the processor is configured to:
  • An equalization enable control signal is output to the equalization circuit to control the equalization circuit to be turned on.
  • the processor after implementing the controlling the first battery to charge the second battery, the processor further implements:
  • the control terminates the charging of the second battery by the first battery.
  • the processor when the processor implements the judging whether the power supply of the first battery and the second battery is balanced, the processor is configured to implement:
  • an equalization circuit is provided between the first battery and the second battery, and when the processor realizes the control to terminate the charging of the second battery by the first battery, the processor is configured to accomplish:
  • the equalizing circuit is controlled to be disconnected, so that the first battery stops charging the second battery.
  • the embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program, the computer program includes program instructions, and the processor executes the program instructions to implement the present application The steps of the battery power supply control method provided by the embodiment.
  • the computer-readable storage medium may be the internal storage unit of the movable platform or the battery-powered control device described in the foregoing embodiments, such as a hard disk or memory of the movable platform or the battery-powered control device.
  • the computer-readable storage medium may also be an external storage device of the movable platform or the battery-powered control device, such as a plug-in hard disk equipped on the movable platform or the battery-powered control device, a smart memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc.

Abstract

L'invention concerne un procédé et un appareil de commande d'alimentation électrique de batterie, une plateforme mobile, et un support de stockage. Le procédé consiste : à obtenir des informations actuelles d'alimentation en énergie de chaque batterie de multiples batteries connectées en série d'une plateforme mobile, n'importe laquelle des multiples batteries connectées en série pouvant former une boucle connectée en série avec un dispositif basse tension de la plateforme mobile au moyen d'un ensemble commutateur (S101) ; à déterminer une batterie d'alimentation principale depuis les multiples batteries connectées en série en fonction des informations actuelles d'alimentation en énergie de chaque batterie (S102) ; et si une batterie d'alimentation en courant du dispositif basse tension n'est pas la batterie d'alimentation électrique principale, à commander la commutation de l'ensemble commutateur de sorte que la batterie d'alimentation électrique principale soit connectée en série au dispositif basse tension, de façon à fournir de l'énergie au dispositif basse tension à l'aide de la batterie d'alimentation électrique principale (S103).
PCT/CN2021/089441 2021-04-23 2021-04-23 Procédé et appareil de commande d'alimentation électrique de batterie, plateforme mobile, et support de stockage WO2022222156A1 (fr)

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PCT/CN2021/089441 WO2022222156A1 (fr) 2021-04-23 2021-04-23 Procédé et appareil de commande d'alimentation électrique de batterie, plateforme mobile, et support de stockage

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PCT/CN2021/089441 WO2022222156A1 (fr) 2021-04-23 2021-04-23 Procédé et appareil de commande d'alimentation électrique de batterie, plateforme mobile, et support de stockage

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103187744A (zh) * 2011-12-30 2013-07-03 鸿富锦精密工业（深圳）有限公司 电源装置
JP2013233028A (ja) * 2012-04-27 2013-11-14 Toyota Industries Corp 電圧均等化装置
CN203690972U (zh) * 2013-12-14 2014-07-02 郎雪峰 一种基于储能电容的电池组能量管理系统
CN109193852A (zh) * 2018-10-12 2019-01-11 苏州唯控汽车科技有限公司 电动汽车模块化逆变器高压转低压变换充电电路

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103187744A (zh) * 2011-12-30 2013-07-03 鸿富锦精密工业（深圳）有限公司 电源装置
JP2013233028A (ja) * 2012-04-27 2013-11-14 Toyota Industries Corp 電圧均等化装置
CN203690972U (zh) * 2013-12-14 2014-07-02 郎雪峰 一种基于储能电容的电池组能量管理系统
CN109193852A (zh) * 2018-10-12 2019-01-11 苏州唯控汽车科技有限公司 电动汽车模块化逆变器高压转低压变换充电电路

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