CN109831004A - A kind of battery charge controller and method - Google Patents
A kind of battery charge controller and method Download PDFInfo
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Abstract
The invention discloses a kind of battery charge controllers, including electric pressure converter, protocol interface module and control module, by obtaining the power information of input power and the charge power or charging current information of other units from same power supply extraction power, calculate and adjust in real time the maximum output ability of input power, and the maximum output ability for being no more than input power is requested in the power supply output that control protocol interface module is sent, the limitation and dynamic change that input power is not accounted in the fast charge agreement for solving the problems, such as current mainstream cause charging equipment to extract excessively high power from power supply, to guarantee input power trouble free service.
Description
Technical field
The present invention relates to charging technique field more particularly to a kind of battery charge controller and methods.
Background technique
In recent years, rapid nitriding is rapidly developed, and has been emerged more and more terminals for supporting fast charge and has been set
It is standby, including smart phone, notebook, plate and unmanned aerial vehicle etc..These terminal devices wish under the premise that security is guaranteed, energy
It is enough to improve input power as far as possible, to accelerate charging rate, save the charging time.But the function that input power is capable of providing
Rate, voltage, electric current have maximum limitation, for example the input voltage of onboard charger is generally 11V~14.5V, mobile power source
The voltage that provides of battery be generally 3.2V~4.5V, if multiple batteries, voltage range is n*3.2V~n*4.5V, mobile electricity
The electric current that the battery in source provides is limited, and the electric current that the ACDC power supply of adapter provides also has certain cut-off current.In addition, defeated
Enter the power of power supply, voltage and current is also not changeless, with factors such as environmental aspect, load state and power consumption times
It will appear dynamic change.However, at present mainstream fast charge agreement, including apple, Samsung, BC1.2, QC, FCP, SCP, AFC,
The agreements such as VOOC, PE, SFCP, PD, seldom consider input power limitation and dynamic change, can bring in this way it is serious after
Fruit: the charging voltage and charging current of charging terminal equipment application have been more than the ability that power supply can provide, and occur extracting very big
Power scene, gently power supply is then made to occur restarting, overheat, it is heavy then burn damage power supply.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of adjusted in real time according to input power state it is defeated
Out to the battery charge controller and method of protection power source.
The technical solution adopted by the present invention to solve the technical problems are as follows:
A kind of battery charge controller, the electric pressure converter connected including control module and respectively with the control module and association
Discuss interface module:
The electric pressure converter, connect with input power, for converting to the voltage that input power provides；
The protocol interface module sends out charging terminal equipment for linking up the control module and charging terminal equipment
The power supply output request sent is transmitted to the control module and receives the real-time control information that the control module is sent；
The control module, voltage acquisition module, the electric current connected including main control unit and respectively with the main control unit
Acquisition module and power supply status and information acquisition module, the main control unit are obtained by voltage acquisition module and current acquisition module
Voltage, the current information for taking input power obtain the real time temperature of electric pressure converter by power supply status and information acquisition module,
The main control unit obtains the maximum output ability of input power according to collected information and control protocol interface module and fills
Electric equipment is linked up, and makes to export the maximum output ability for being no more than input power in real time, maximum output ability can be maximum output
Voltage, maximum output current or peak power output.
Further, the power supply status and information acquisition module can also be used in the feedback information for acquiring input power, input
The feedback information of power supply includes battery number, power source temperature and battery capacity.
Further, the electric pressure converter is ACDC voltage changer or DCDC voltage changer or low pressure difference linearity pressure stabilizing
Device.
A kind of battery charge controller, including at least two charhing units, each charhing unit include control module and
The electric pressure converter and protocol interface module connected respectively with the control module, between the control module of each charhing unit
It is connected with each other, the control module of each charhing unit can obtain the charging feedback information of other charhing units:
The electric pressure converter, connect with input power, for converting to the voltage that input power provides；
The protocol interface module sends out charging terminal equipment for linking up the control module and charging terminal equipment
The power supply output request sent is transmitted to the control module and receives the real-time control information that the control module is sent；
The control module, the control module, the voltage connected including main control unit and respectively with the main control unit
Acquisition module, current acquisition module and power supply status and information acquisition module, the main control unit by voltage acquisition module and
Current acquisition module obtains voltage, the current information of input power, obtains voltage by power supply status and information acquisition module and turns
The real time temperature of parallel operation, the main control unit obtain the maximum output ability of input power according to collected information and control association
It discusses interface module and charging equipment is linked up, make to export the maximum output ability for being no more than input power in real time.
Further, the control module of the charhing unit is integrated on a master control unit.
Correspondingly, including the following steps: the present invention also provides a kind of charge control method
S1, control module obtain the power information of input power, and acquire other chargings that power is extracted from same power supply
The charging feedback information of unit；
The charge power or charging electricity that other charhing units of power are extracted from same power supply is calculated in S2, control module
Stream；
Maximum output current, the maximum that input power can provide is calculated according to the information got in S3, control module
Output voltage, peak power output；
Maximum output current, maximum output voltage and the maximum work output that S4, control module can be provided according to input power
Maximum output current, maximum output voltage and peak power output that electric pressure converter is capable of providing is calculated in rate；
S5, control module control protocol interface module and charging equipment are linked up, and make to be exported in real time no more than input power
Maximum output ability.
Further, between step S3 and step S4 further include:
Control module by power supply status and information acquisition module acquire power supply real time temperature and by power supply real time temperature with
Preset first temperature threshold compares, if power supply real time temperature is greater than preset first temperature threshold, reduces input power energy
The peak power output of offer.
Further, between step S3 and step S4 further include: control module is adopted by power supply status and information acquisition module
Collect the battery number of input power, if battery number becomes more, the peak power output that input power can provide is turned up；If battery
Joint number tails off, then reduces the peak power output that input power can provide.
Further, the charging feedback information of other charhing units includes the input current of other charhing units, output
Electric current, input voltage, output voltage, input power, output power, device temperature and working condition.
The beneficial effects of the present invention are as follows:
The present invention is by obtaining the power information of input power and the charging of other units from same power supply extraction power
Power or charging current information calculate and adjust in real time the peak power output of input power, and control protocol interface module is sent out
The power supply output request sent is no more than the peak power output of input power, does not examine in the fast charge agreement for solving current mainstream
The problem of limitation and dynamic change for considering input power cause charging equipment to extract excessively high power from power supply, to guarantee
Input power trouble free service.
Detailed description of the invention
With reference to the accompanying drawing and specific embodiment the invention will be further described, in which:
Fig. 1 is a kind of structural schematic diagram of battery charge controller of the embodiment of the present invention 1；
Fig. 2 is a kind of structural schematic diagram of battery charge controller of the embodiment of the present invention 2；
Fig. 3 is a kind of structural schematic diagram of battery charge controller of the embodiment of the present invention 3；
Fig. 4 is a kind of structural schematic diagram of battery charge controller of the embodiment of the present invention 4；
Fig. 5 is the structural schematic diagram of the control module of preferred embodiment of the present invention；
Fig. 6 is a kind of flow diagram of charge control method of preferred embodiment of the present invention.
Specific embodiment
Hereinafter, various embodiments of the present invention will be disclosed with reference to attached drawing.Various embodiments disclosed by the invention are filled
Controller for electric consumption can be applied to such as mobile power source, onboard charger, power supply adaptor, wireless charger, charging of mobile devices
The charging equipments such as device, in addition maximum output ability of the present invention can be maximum output current, maximum output voltage or maximum
Output power.
Embodiment 1
Referring to Fig. 1 and Fig. 5, a kind of battery charge controller, including control module 13 and respectively with the control module 13 connect
The electric pressure converter 11 and protocol interface module 12 connect:
The electric pressure converter 11, connect with input power, for converting to the voltage that input power provides；
The protocol interface module 12 sets charging terminal for linking up the control module 13 and charging terminal equipment
The power supply output request that preparation is sent is transmitted to the control module 13 and receives the real-time control letter that the control module 13 is sent
Breath；
The control module 13, including main control unit 131 and respectively with the voltage acquisition mould of the main control unit 131 connection
Block 132, current acquisition module 133 and power supply status and information acquisition module 134, the main control unit 131 pass through voltage acquisition
Module 132 and current acquisition module 133 obtain voltage, the current information of input power, power supply status and information acquisition module 134
Including temperature collecting module, the real time temperature of electric pressure converter 11,131 basis of main control unit are obtained using temperature sensor
Collected information obtains the maximum output ability of input power and control protocol interface module 12 and charging equipment are linked up, and makes reality
When output be no more than input power maximum output ability.
Specifically, the main control unit 131 obtains the side of the peak power output of input power according to collected information
Formula is calculated for voltage, the current information that foundation obtains input power, and can be according to the real-time of the electric pressure converter 11 of acquisition
Temperature adjusts the value of the peak power output of input power in real time, if the real time temperature of electric pressure converter 11 is excessively high, reduces input
The peak power output of power supply；The electric pressure converter 11 can be ACDC voltage changer, DCDC voltage changer or low pressure
Drop converter,linear etc., use DCDC voltage changer in the present embodiment, DCDC voltage changer can using buck,
The frameworks such as boost, buck-boost；Protocol interface module 12 support agreement, can be apple, Samsung, BC1.2, QC, FCP,
The agreements such as SCP, AFC, VOOC, PE, SFCP, PD；Agreement ditch messenger, can be the signals such as DP, DM, CC1, CC2, on VBUS
Voltage ripple on current change quantity, VBUS all can serve as agreement ditch messenger.
Specifically, the control module 13 obtains peak power output and the control of input power according to collected information
Protocol interface module 12 and charging equipment are linked up, and real-time output power is made to be no more than the principle of the peak power output of input power
Are as follows: if power supply output request voltage or power are greater than maximum output voltage or power that power supply can be provided, control protocol
The refusal of interface module 12 sends power supply output request to the control module 13, so that limiting power supply output is no more than input electricity
The maximum output voltage or power in source.For example, it is assumed that input power can be that the maximum output voltage that the output port provides is
10V, for PD agreement, protocol interface module 12 broadcast 5V, 9V etc. are lower than the PDO of 10V.Assuming that input voltage rises to
12V or more, protocol interface module 12 can dynamic update PDO, the PDO of broadcast 5V, 9V, 12V.Assuming that input voltage rises to 20V
More than, protocol interface module 12 will be updated PDO, broadcast the PDO of 5V, 9V, 12V, 20V.In this way, input electricity can either be made full use of
The voltage capability in source, enough voltage can be provided to being electrically charged equipment by turn ensuring.
Power, the voltage and current of input power are also not changeless, with environmental aspect, load state and power consumption
The factors such as duration will appear dynamic change, and battery charge controller provided in this embodiment can obtain the power letter of input power in real time
Breath, calculates and adjusts in real time the peak power output of input power, and control protocol interface module and charging equipment are linked up, made in real time
Output power is no more than the peak power output of input power, does not account for input in the fast charge agreement for solving current mainstream
The limitation and dynamic change of power supply will cause the problem of charging equipment extracts excessively high power from power supply, to guarantee input electricity
Source trouble free service.
Embodiment 2
Referring to fig. 2, a kind of battery charge controller, the present embodiment are suitable for mobile power source or power adaptation with battery
Device calculates the peak power output of input power in conjunction with information such as battery number, battery temperature, cell voltages.Specifically, packet
Include control module 13 and the respectively electric pressure converter 11 and protocol interface module 12 with the control module 13 connection:
The electric pressure converter 11, connect with input power, for converting to the voltage that input power provides；
The protocol interface module 12 sets charging terminal for linking up the control module 13 and charging terminal equipment
The power supply output request that preparation is sent is transmitted to the control module 13 and receives the real-time control letter that the control module 13 is sent
Breath；
The control module 13, including main control unit 131 and respectively with the voltage acquisition mould of the main control unit 131 connection
Block 132, current acquisition module 133 and power supply status and information acquisition module 134, the main control unit 131 pass through voltage acquisition
Module 132 and current acquisition module 133 obtain voltage, the current information of input power, the power supply status and information collection mould
Block 134 includes temperature collecting module, and the real time temperature of input power, the power supply status and information are obtained using temperature sensor
Acquisition module 134 further includes battery information detection module, for acquiring battery capacity, power, battery number and battery temperature
The information such as degree, obtaining the power of battery, battery number can be calculated according to the voltage and current data of acquisition battery, battery temperature
Degree can be obtained by temperature sensor, and the main control unit 131 show that the maximum of input power is defeated according to collected information
Power and control protocol interface module 12 and charging equipment are linked up out, enable to export the maximum output for being no more than input power in real time
Power.
Specifically, control module 13 acquires power supply real time temperature by power supply status and information acquisition module 134 and will be electric
Source real time temperature, if power supply real time temperature is greater than preset first temperature threshold, drops compared with preset first temperature threshold
The peak power output that low input power can provide.
Control module 13 acquires the battery number of input power by power supply status and information acquisition module 134, if battery
Joint number becomes more, and the peak power output that input power can provide is turned up；If battery number tails off, reduce what input power can provide
Peak power output.
By real-time monitoring power source temperature and number of batteries, can be mentioned according to power source temperature and number of batteries adjustment input power
The peak power output of confession guarantees to realize quick charge while power safety.
Embodiment 3
A kind of battery charge controller, the present embodiment are suitable for the charging unit with multiple charhing units, different chargings
Information exchange can be carried out between unit, transmits the information such as mutual charge power, voltage, by acquiring filling for other charhing units
Power information, in conjunction with the power information of input power, the output of dynamic regulation charhing unit.
Referring to Fig. 3, a kind of battery charge controller, it is characterised in that: including at least two charhing units 1, each charging
Unit 1 includes control module 13 and the electric pressure converter 11 connected respectively with the control module 13 and protocol interface module
12, it is connected with each other between the control module 13 of each charhing unit 1, the control module 13 of each charhing unit 1 can obtain
The charging feedback information of other charhing units, such as the input current of other charhing units, output electric current, input voltage, output electricity
Pressure, input power, output power, device temperature and working condition etc., specific:
The electric pressure converter 11, connect with input power, for converting to the voltage that input power provides；
The protocol interface module 12 sets charging terminal for linking up the control module 13 and charging terminal equipment
The power supply output request that preparation is sent is transmitted to the control module 13 and receives the real-time control letter that the control module 13 is sent
Breath；
The control module 13, including main control unit 131 and respectively with the voltage acquisition mould of the main control unit 131 connection
Block 132, current acquisition module 133 and power supply status and information acquisition module 134, the main control unit 131 pass through voltage acquisition
Module 132 and current acquisition module 133 obtain voltage, the current information of input power, the power supply status and information collection mould
Block 134 includes temperature collecting module, and the real time temperature of electric pressure converter 11 or input power is obtained using temperature sensor, described
Power supply status and information acquisition module 134 further include battery information detection module, for acquiring battery capacity, power, electricity
The information such as pond joint number and battery temperature, by real-time monitoring power source temperature and number of batteries, according to power source temperature and number of batteries
The peak power output that input power can provide is adjusted, guarantees to realize quick charge while power safety, the acquisition power of battery,
Battery number can be calculated according to the voltage and current data of acquisition battery, and battery temperature can be obtained by temperature sensor
It takes, the main control unit 131 obtains the maximum output that can be distributed in the charhing unit, input power according to collected information
Power such as can obtain the charging list by the charge power that the current peak power output of power supply is subtracted other charhing units
The peak power output that member can obtain, and control protocol interface module 12 and charging equipment are linked up, and make to be exported in real time no more than defeated
Enter the maximum output ability of power supply.
Specifically, the mode for the peak power output that can be provided according to power source temperature and number of batteries adjustment input power
Are as follows: control module 13 by power supply status and information acquisition module 134 acquire power supply real time temperature and by power supply real time temperature with
Preset first temperature threshold compares, if power supply real time temperature is greater than preset first temperature threshold, reduces input power energy
The peak power output of offer；Control module 13 acquires the battery of input power by power supply status and information acquisition module 134
The peak power output that input power can provide is turned up if battery number becomes more in joint number；If battery number tails off, input is reduced
The peak power output that power supply can provide.
Real-time monitoring power supply export situation, by obtain input power power information, in conjunction with charging feedback information, meter
The case where calculating the maximum charge power for obtaining the road and limiting power supply output, avoid power supply output excessive to damage power supply.It is logical
Real-time monitoring power source temperature and number of batteries are crossed, the maximum that can be provided according to power source temperature and number of batteries adjustment input power is defeated
Power out guarantees to realize quick charge while power safety.
Correspondingly, the present embodiment also provides a kind of charge control method, referring to Fig. 6, include the following steps:
S1, control module 13 obtain input power power information, and acquire from same power supply extract power other fill
The charging feedback information of electric unit；
Charge power or the charging of other charhing units from same power supply extraction power is calculated in S2, control module 13
Electric current；
Maximum output current that input power can provide, most is calculated according to the information got in S3, control module 13
Big output voltage, peak power output；
Maximum output current, maximum output voltage and the maximum output that S4, control module 13 can be provided according to input power
Maximum output current, maximum output voltage and peak power output that electric pressure converter 11 is capable of providing is calculated in power；
S5,13 control protocol interface module of control module and charging equipment are linked up, and make to be exported in real time no more than input power
Maximum output ability.
Real-time monitoring power supply exports situation, and input power is calculated in the voltage and current information by acquiring input power
The maximum charge power on the road and limitation is calculated in conjunction with the charging feedback information of other charhing units in peak power output
Power supply output, such as can show that this is filled by the charge power that the current peak power output of power supply is subtracted other charhing units
The peak power output that electric unit can obtain avoids power supply output excessive thus the case where damaging power supply.
Further, between step S3 and step S4 further include:
Control module 13 acquires power supply real time temperature and power supply is warm in real time by power supply status and information acquisition module 134
Degree is compared with preset first temperature threshold, if power supply real time temperature is greater than preset first temperature threshold, reduces input electricity
The peak power output that source can provide.
Further, between step S3 and step S4 further include: control module 13 passes through power supply status and information acquisition module
The peak power output that input power can provide is turned up if battery number becomes more in the battery number of 134 acquisition input powers；If
Battery number tails off, and reduces the peak power output that input power can provide.
By real-time monitoring power source temperature and number of batteries, can be mentioned according to power source temperature and number of batteries adjustment input power
The peak power output of confession guarantees to realize quick charge while power safety.
Further, the charging feedback information of other charhing units include other equipment input current, output electric current,
Input voltage, output voltage, input power, output power, device temperature and working condition.
Embodiment 4
A kind of battery charge controller, including at least two charhing units, each charhing unit include such as embodiment 1 or
Control module 13, electric pressure converter 11 described in 2 and protocol interface module 12.The present embodiment is suitable for having multiple charhing units
Charging equipment, information exchange can be carried out between different charhing units, transmit the information such as mutual charge power, voltage, led to
The charge information for acquiring other charhing units is crossed, in conjunction with the power information of input power, the output of dynamic regulation charhing unit.
Referring to fig. 4, the present embodiment and the difference of embodiment 3 are, the control module 13 of all charhing units 1 is integrated into one
A master control unit 14, apparatus structure is more succinct.Battery charge controller one described in other aspect and embodiment 3 of the present embodiment
It causes, this will not be repeated here.
The above, only better embodiment of the invention, but the present invention is not limited to above-described embodiments, as long as
The technical effect of the present invention is achieved by any identical or similar means for it, all should belong to protection scope of the present invention.
Claims (9)
1. a kind of battery charge controller, it is characterised in that: connect including control module (13) and respectively with the control module (13)
The electric pressure converter (11) and protocol interface module (12) connect:
The electric pressure converter (11), connect with input power, for converting to the voltage that input power provides；
The protocol interface module (12) sets charging terminal for linking up the control module (13) and charging terminal equipment
The power supply output request that preparation is sent is transmitted to the control module (13) and receives the real-time control that the control module (13) sends
Information processed；
The control module (13), including main control unit (131) and respectively with the voltage acquisition of the main control unit (131) connection
Module (132), current acquisition module (133) and power supply status and information acquisition module (134), the main control unit (131) are logical
Overvoltage acquisition module (132) and current acquisition module (133) obtain voltage, the current information of input power, pass through power supply shape
State and information acquisition module (134) obtain the real time temperature of electric pressure converter (11), and main control unit (131) basis collects
Information obtain the maximum output ability of input power and control protocol interface module (12) and charging equipment are linked up, make real-time defeated
It is no more than the maximum output ability of input power out.
2. a kind of battery charge controller according to claim 1, it is characterised in that: the power supply status and information collection mould
Block (134) can also be used in the feedback information for acquiring input power, and the feedback information of input power includes battery number, power source temperature
And battery capacity.
3. a kind of battery charge controller according to claim 1, it is characterised in that: the electric pressure converter (11) is ACDC
Voltage changer or DCDC voltage changer or low pressure difference linear voltage regulator.
4. a kind of battery charge controller, it is characterised in that: including at least two charhing units (1), each charhing unit (1) is equal
Including control module (13) and respectively with the electric pressure converter (11) and protocol interface module of the control module (13) connection
(12), it is connected with each other between the control module (13) of each charhing unit, the control module (13) of each charhing unit can
Obtain the charging feedback information of other charhing units:
The electric pressure converter (11), connect with input power, for converting to the voltage that input power provides；
The protocol interface module (12) sets charging terminal for linking up the control module (13) and charging terminal equipment
The power supply output request that preparation is sent is transmitted to the control module (13) and receives the real-time control that the control module (13) sends
Information processed；
The control module (13), including main control unit (131) and respectively with the voltage acquisition of the main control unit (131) connection
Module (132), current acquisition module (133) and power supply status and information acquisition module (134), the main control unit (131) are logical
Overvoltage acquisition module (132) and current acquisition module (133) obtain voltage, the current information of input power, pass through power supply shape
State and information acquisition module (134) obtain the real time temperature of electric pressure converter (11) and input power, the main control unit (131)
The maximum output ability and control protocol interface module (12) and charging equipment ditch of input power are obtained according to collected information
It is logical, make to export the maximum output ability for being no more than input power in real time.
5. a kind of battery charge controller according to claim 4, it is characterised in that: the control of any charhing unit (1)
Molding block (13) is integrated on a master control unit (14).
6. a kind of charge control method, which comprises the steps of:
S1, control module (13) obtain the power information of input power, and acquire other chargings that power is extracted from same power supply
The charging feedback information of unit；
The charge power or charging electricity that other charhing units of power are extracted from same power supply is calculated in S2, control module (13)
Stream；
Maximum output current, the maximum that input power can provide is calculated according to the information got in S3, control module (13)
Output voltage, peak power output；
Maximum output current, maximum output voltage and the maximum work output that S4, control module (13) can be provided according to input power
Maximum output current, maximum output voltage and peak power output that electric pressure converter is capable of providing is calculated in rate；
S5, control module (13) control protocol interface module and charging equipment are linked up, and make to be exported in real time no more than input power
Maximum output ability.
7. a kind of charge control method according to claim 6, it is characterised in that: also wrapped between step S3 and step S4
It includes:
Control module (13) acquires power supply real time temperature and power supply is warm in real time by power supply status and information acquisition module (134)
Degree is compared with preset first temperature threshold, if power supply real time temperature is greater than preset first temperature threshold, reduces input electricity
The peak power output that source can provide.
8. a kind of charge control method according to claim 6, it is characterised in that: also wrapped between step S3 and step S4
Include: control module (13) acquires the battery number of input power by power supply status and information acquisition module (134), if battery section
Number becomes more, then the peak power output that input power can provide is turned up；If battery number tails off, reducing input power can be provided
Peak power output.
9. a kind of charge control method according to claim 6, it is characterised in that: the charging of other charhing units is anti-
Feedforward information includes the input current of other charhing units, output electric current, input voltage, output voltage, input power, output work
Rate, device temperature and working condition.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110380488A (en) * | 2019-08-08 | 2019-10-25 | 珠海英集芯半导体有限公司 | A kind of vehicle-mounted charge control circuit and method |
| CN111766818A (en) * | 2020-07-15 | 2020-10-13 | 熊鹰 | Control system of automatic electromechanical equipment |
| CN111917152A (en) * | 2020-07-07 | 2020-11-10 | 珠海智融科技有限公司 | Method for improving power efficiency, terminal, storage medium and charging device |
| CN112186861A (en) * | 2020-10-26 | 2021-01-05 | 无锡速芯微电子有限公司 | Self-adaptive variable power charger |
| CN114123380A (en) * | 2021-10-15 | 2022-03-01 | 华为数字能源技术有限公司 | Charging device, charger and charging power adjustment method |
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| CN115360784B (en) * | 2022-08-12 | 2025-03-11 | 珠海市一微星科技有限公司 | A multi-port adapter system charging management method and system |
| CN116111702A (en) * | 2023-01-29 | 2023-05-12 | 深圳金三立视频科技股份有限公司 | Method, device, terminal and readable storage medium for power management of CT camera |
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