CN106501745A - A kind of self-checking device and calibration steps - Google Patents
A kind of self-checking device and calibration steps Download PDFInfo
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- CN106501745A CN106501745A CN201611260655.8A CN201611260655A CN106501745A CN 106501745 A CN106501745 A CN 106501745A CN 201611260655 A CN201611260655 A CN 201611260655A CN 106501745 A CN106501745 A CN 106501745A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract
A kind of self-checking device and calibration steps, the passage for battery management unit are calibrated, and device includes：Main control module, for executing calibration algorithm；Bus communication interface, for connecting battery management unit to send calibration information to battery management unit；One passage access interface, for connecting passage to be calibrated；One load input interface, for connecting passage to be calibrated in correcting current pattern；Voltage calibration Acquisition Circuit, sends to main control module for acquisition channel voltage and after carrying out digital-to-analogue conversion；Correcting current Acquisition Circuit, sends to main control module for acquisition channel electric current and after carrying out digital-to-analogue conversion；Calibration mode handover module, for under the control of main control module, select in voltage calibration pattern voltage calibration Acquisition Circuit to connect with passage access interface, select in correcting current pattern correcting current Acquisition Circuit to connect with passage access interface with load input interface.Small volume of the present invention, is easy to carry, line is simple, versatility good.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of self-checking device and calibration steps.
Background technology
With the development and the excessive use and shortage of natural resources of science and technology, exploitation and utilization of the mankind to new forms of energy
Technology is constantly ripe, and the fresh and new high technology industry of solar energy, wind energy, electric automobile etc. gradually comes into our life,
Indicate the arrival in new forms of energy epoch, and engine battery of all as this, quantitatively, efficient, green
Changing but becomes all cell production companies institutes urgent problem.
With battery widely using in all trades and professions, the demand of battery management unit gradually increases.And be used for producing
The calibrator (-ter) unit of battery management unit has versatility relatively low, and production cost is high, and wiring is complicated, and calibration efficiency is low, and volume is taken greatly
Shortcomings with inconvenience, wherein, the calibration efficiency of battery management unit is particularly problematic with inconvenient to carry.Low calibration
Efficiency causes the calibration operation of battery management unit consume substantial amounts of labour, has not only tied down the production stream of battery management unit
Journey, reduces the competitiveness of product in market, also substantially increases equipment production cost.And bulky wiring is miscellaneous limits school
The portability of quasi- equipment, and then have influence on the operability at actually used scene.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of automatic calibration cartridge
Put and calibration steps.
The technical solution adopted for the present invention to solve the technical problems is：A kind of self-checking device is constructed, for battery
The passage calibration of management equipment, described device include：
Main control module, for executing calibration algorithm；
Bus communication interface, for connecting battery management unit to send calibration information to battery management unit；
One passage access interface, for connecting at least one passage to be calibrated；
One load input interface, for connecting at least one passage to be calibrated in correcting current pattern；
Voltage calibration Acquisition Circuit, sends to main control module for acquisition channel voltage and after carrying out digital-to-analogue conversion；
Correcting current Acquisition Circuit, sends to main control module for acquisition channel electric current and after carrying out digital-to-analogue conversion；
Calibration mode handover module, for, under the control of main control module, selecting voltage calibration in voltage calibration pattern
Acquisition Circuit is connected with passage access interface, selects correcting current Acquisition Circuit and load input interface in correcting current pattern
Connect with passage access interface.
In self-checking device of the present invention, the calibration algorithm is included under voltage calibration pattern, for every
One passage to be calibrated executes the calibration of multiple electrical voltage points, under correcting current pattern, for each passage to be calibrated
Execute the calibration of multiple current points；
Wherein, the calibration for each electrical voltage point/current point includes：Calibration information is sent to battery management unit with logical
Know that battery management unit exports corresponding voltage/current to specified passage to be calibrated, compare the voltage/current of collection and work as
Error between the corresponding theoretical voltage/electric current of front electrical voltage point/current point, if error is within preset range, judges school
Accurate qualified, terminate the calibration to current voltage point；If error exceeds preset range, send again and include this calibration result
Calibration information to battery management unit re-start calibration, until reaching for the calibration number of times of current voltage point/current point
Preset times or calibration are qualified；
Wherein, battery management unit will be adjusted according to calibration result when the calibration information comprising calibration result is received
Output voltage.
In self-checking device of the present invention, described device also includes：
Quantity and the one-to-one DIP device of passage, are connected with main control module, for selecting passage to be calibrated；
Calibration controlling switch, is connected with main control module, for selecting calibration mode；
Quantity and the one-to-one calibrated channel indicator lamp of passage, are connected with main control module, for pointing out respective channel
Calibration result.
In self-checking device of the present invention, described device also includes a buzzer being connected with main control module,
For coordinating the calibration result of prompting respective channel with calibrated channel indicator lamp.
In self-checking device of the present invention, the voltage calibration Acquisition Circuit includes：
Voltage sampling circuit, for the voltage signal of sampling channel；
Analog to digital conversion circuit, for exporting after the voltage signal of sampling is carried out analog-to-digital conversion to main control module calculating
To actual channel voltage.
In self-checking device of the present invention, the correcting current Acquisition Circuit includes：
Current divider and/or Hall element, the electric current for sampling channel simultaneously produce corresponding voltage signal；
Two analog to digital conversion circuits corresponding with current divider, Hall element difference, for entering the voltage signal of sampling
Export after row analog-to-digital conversion to main control module being calculated actual channel current.
In self-checking device of the present invention, device also includes：
Calibration result output interface, is connected with main control module, for deriving calibration result；
Monitor screen communication interface, is connected with main control module, is shown for sending to monitor screen calibration data in real time.
In self-checking device of the present invention, device also includes：
Universal meter communication interface, is connected with main control module, for connecting universal meter, is realized to device under self-calibration mode
The calibration of itself.
In self-checking device of the present invention, described device also includes the shell for housing all of circuit and module
Body.
The invention also discloses a kind of automatic calibrating method based on described self-checking device, sets for battery management
Standby passage calibration, including：
Bus communication interface is connected with the bus communication interface of battery management unit, by passage access interface and at least
Individual passage connection to be calibrated；
Main control module selects voltage calibration Acquisition Circuit to connect with passage access interface in voltage calibration pattern, in electric current
Correcting current Acquisition Circuit is selected to connect with passage access interface with load input interface during calibration mode；
Main control module sends calibration information according to calibration algorithm by bus communication interface and executes school to battery management unit
Accurate.
Implement the self-checking device and calibration steps of the present invention, have the advantages that：Assembly of the invention is tied
Structure is simple, and small volume is easy to carry；Whole device is simple with the line of battery management unit, it is only necessary to which bus communication is connect by connection
Mouth and passage access interface interface corresponding with battery management unit and passage connect, and greatly improve actually used scene
Operability；The hardware versatility of device is good, almost can all electricity on compatible market by changing calibration algorithm and communication protocol
Pond management equipment.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings：
Fig. 1 is the structural representation of the preferred embodiment of the self-checking device of the present invention.
Specific embodiment
In embodiments of the present invention, the transmission that battery management unit realizes calibration information is connected by bus communication interface,
Passage access interface connects passage to be calibrated, by voltage calibration Acquisition Circuit acquisition channel voltage and after carrying out digital-to-analogue conversion
Send to main control module, correcting current Acquisition Circuit acquisition channel electric current is simultaneously sent to main control module after carrying out digital-to-analogue conversion；?
After connection is finished, main control module selects voltage calibration Acquisition Circuit to connect with passage access interface in voltage calibration pattern
Logical, select correcting current Acquisition Circuit to connect with passage access interface with load input interface in correcting current pattern, then
Calibration information is sent by bus communication interface according to calibration algorithm calibration is can perform to battery management unit.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application
The detailed description of technical scheme, rather than the restriction to technical scheme, in the case where not conflicting, the present invention is implemented
Technical characteristic in example and embodiment can be mutually combined.
With reference to Fig. 1, it is the circuit theory diagrams of the preferred embodiment of the self-checking device of the present invention.
Described device includes a passage access interface, load input interface, a main control module, and and main control module
Connection：Calibration mode handover module, voltage calibration Acquisition Circuit, correcting current Acquisition Circuit, DIP device, calibrated channel are indicated
Lamp, calibration controlling switch, bus communication interface, calibration result output interface, monitor screen communication interface, universal meter communication interface,
Calibration mode handover module is also connected with passage access interface, load input interface, voltage calibration Acquisition Circuit, correcting current collection
Circuit.
Calibration algorithm in main control module mainly includes：Under voltage calibration pattern, for each passage to be calibrated
The calibration of multiple electrical voltage points is executed, and under correcting current pattern, multiple current points is executed for each passage to be calibrated
Calibration；Wherein, the calibration for each electrical voltage point/current point includes：Calibration information is sent to battery management unit notifying
Battery management unit exports corresponding voltage/current to specified passage to be calibrated, compares the voltage/current of collection and current
Error between the corresponding theoretical voltage/electric current of electrical voltage point/current point, if error is within preset range, judges calibration
Qualified, terminate the calibration to current voltage point；If error exceeds preset range, sent comprising this calibration result again
Calibration information to battery management unit re-starts calibration, and (battery management unit is receiving the calibration information comprising calibration result
When, output voltage will be adjusted according to calibration result), until the calibration number of times for current voltage point/current point reaches default time
It is qualified to count or calibrate.
Wherein, preset times can be chosen as 5 times, and certainly specific numerical value is not limited, can rule of thumb or
Application requirement specifically sets.Further, since the hardware versatility of device is good, can also pass through to change calibration algorithm and communication protocol
Realize all battery management units on compatible market.
Below each structure is described in detail.
Bus communication interface, for connecting the bus communication interface of battery management unit, and then realizes setting with battery management
Standby main controller communicates to connect to send calibration information to battery management unit.Bus can be adopted but be not limited to CAN.
Passage access interface, for connecting at least one passage to be calibrated.Concrete when connecting, each passage is respectively with one
One end connection of root electric wire, accesses passage access interface, therefore, when any all after the other end short circuit of all of electric wire
The signal of a passage is merely entered, it is only necessary to the controller output voltage or electricity that battery management unit is informed by CAN
Flow to the passage that specifies.
Load input interface, for connecting at least one passage to be calibrated in correcting current pattern.Logical in order to detect
Road electric current, it is necessary to access load for passage and could realize the circulation of electric current, therefore in correcting current pattern, except by passage with
The connection of passage access interface is outer, in addition it is also necessary to be connected with load input interface.
Main control module, is the core of whole device, for executing calibration algorithm, and other interfaces and device is controlled
System.In preferred embodiments, model DSP28069 of main control module, its are provided with bus connection pin.Certainly, this be only one excellent
Example is selected, specific model selects to be not limited to this, the replacement of the controller for possessing functionality required of other models is all this
The simple deformation of invention, all within protection scope of the present invention.
Voltage calibration Acquisition Circuit, sends to main control module for acquisition channel voltage and after carrying out digital-to-analogue conversion.Specifically
, the voltage calibration Acquisition Circuit include the voltage sampling circuit of the voltage signal for sampling channel and for by sampling
Voltage signal is exported after carrying out analog-to-digital conversion to the analog to digital conversion circuit of main control module.
Preferably, analog to digital conversion circuit adopts 24 high-precision adcs, its resolution ratio to can reach 0.1mV, and ADC passes through
Spi bus are connected to main control module.Because channel voltage larger, so voltage sampling circuit has certain intrinsic standoff ratio, master control mould
Block by receive voltage signal according to intrinsic standoff ratio calculate can Acquisition channel actual voltage value.
Correcting current Acquisition Circuit, sends to main control module for acquisition channel electric current and after carrying out digital-to-analogue conversion.Specifically
, correcting current Acquisition Circuit can be based on current divider or Hall element is realized, in order to be adapted to various types of electric currents
Signal, it is preferred that correcting current Acquisition Circuit simultaneously includes current divider and Hall element, accordingly, also include with current divider,
Hall element distinguishes corresponding two analog to digital conversion circuits.
Analog to digital conversion circuit herein can also adopt 24 high-precision adcs, and adopt high-precision current divider, Hall
Sensor, can reach the resolution ratio of 0.1mA.Current divider, the electric current of Hall element sampling channel are simultaneously produced and current value
The voltage signal of sampling is carried out defeated by spi bus after analog-to-digital conversion by proportional voltage signal, analog to digital conversion circuit
Go out to main control module, the voltage signal is converted to actual current value according to ratio during current sample by main control module.
Calibration mode handover module, for, under the control of main control module, selecting voltage calibration in voltage calibration pattern
Acquisition Circuit is connected with passage access interface, selects correcting current Acquisition Circuit and load input interface in correcting current pattern
Connect with passage access interface.Specifically, can be realized using relay.
DIP device, quantity are corresponded with passage, for selecting passage to be calibrated.State of the main control module according to DIP device
Passage to be calibrated can be analyzed, such as DIP device can will socket power supply or drop-down ground connection on the pin of controller, control
Device can analyze which DIP device is pressed according to the level of the pin for scanning, and then can analyze this calibration operation
The middle all passages for needing calibration.
Due to adopting DSP28069 in preferred embodiment, its pin is supported to access 48 DIP devices, namely device supports 48
The calibration of individual passage.Of course, it is possible to as needed main control module is optimized, for example with the more controllers of pin, or
Combination of the person using multiple controllers, makes main control module support more passage calibrations, and these are all in protection scope of the present invention
Within.
In addition, it is necessary to it is clear that, DIP device is only a preferred version of the present invention, and non-invention is necessary.For example,
If without DIP device, main control module can be defaulted as calibrating the passage of all connections.
Calibrated channel indicator lamp, quantity are corresponded with passage, for pointing out the calibration result of respective channel.Preferably,
Described device also includes a buzzer being connected with main control module, for coordinating prompting calibration result with calibrated channel indicator lamp.
For example, the calibration result of certain passage is qualified, then bright light, does not blow a whistle；If unqualified, bright light, does not blow a whistle.
Calibration controlling switch, is connected with main control module, for selecting voltage calibration pattern or correcting current pattern.Specifically
Including voltage calibration switch, correcting current switch, it is preferred that also include for selecting the self-check key of self-calibration mode, open
Beginning calibration switch.Main control module needs to carry out the calibration of which kind of pattern according to these condition adjudgements for switching and when starts school
Accurate.
Calibration result output interface, for deriving calibration result, can adopt but be not limited to USB interface.
Monitor screen communication interface, is shown for sending to monitor screen calibration data in real time.Can adopt but not limit
In CAN interface, 485 interfaces etc..
Self-check key, for selecting self-calibration mode, once the switch is pressed, then main control module can determine whether to need right
Device carries out self calibration in itself.
Universal meter communication interface, for connecting universal meter, realizes the calibration to device itself under self-calibration mode.
In preferred embodiment, whole device is designed as box-type, the circuit of device and module is placed in housing, is connect
The input and output device such as mouth and switch is arranged on housing, and such whole device easily facilitates carrying, and safer.
Specifically, for ease of observation and easy to operate, indicator lamp, DIP device, calibration switch, power switch are arranged at housing
Top surface, be each in array-like arrangement, and indicator lamp be arranged on the left of DIP device, can be specific with textual representation on housing
Passage.Other input/output interfaces arrange the side of housing.
Accordingly, the invention also discloses a kind of automatic calibrating method based on described self-checking device, for electricity
The passage calibration of pond management equipment, method include：
Bus communication interface is connected with the bus communication interface of battery management unit, by passage access interface and at least
Individual passage connection to be calibrated；
Main control module selects voltage calibration Acquisition Circuit to connect with passage access interface in voltage calibration pattern, in electric current
Correcting current Acquisition Circuit is selected to connect with passage access interface with load input interface during calibration mode；
Main control module sends calibration information according to calibration algorithm by bus communication interface and executes school to battery management unit
Accurate.
It is described in detail with reference to the operation principle of the apparatus and method of the present invention present invention.
First, user needs the calibration mode for executing as needed, and assembly of the invention and battery management unit are connected.
Bus communication interface is connected with the bus communication interface of battery management unit, passage access interface is connected with passage to be calibrated
Connect.
Then, user presses DIP device corresponding with passage to be calibrated, then presses correcting current switch or voltage calibration
Switch, finally presses beginning calibration switch.
The end of operation of above user, main control module is switched according to correcting current or voltage calibration switch obtains calibrating die
Formula, under voltage calibration pattern, control calibration mode handover module selects voltage calibration Acquisition Circuit to connect with passage access interface
Logical, under correcting current pattern, control calibration mode handover module selects correcting current Acquisition Circuit and load input interface
Connect with passage access interface；
Finally, main control module is calibrated according to calibration algorithm, specifically：
In voltage calibration pattern, for the calibration that each passage to be calibrated executes multiple electrical voltage points, for each
Calibration information is sent to the controller of battery management unit, the control of battery management unit by CAN for individual electrical voltage point, device
The working phase set according to calibration information is run by device processed, export calibration point voltage, voltage sampling circuit according to divide
Pressure ratio collection voltages, analog to digital conversion circuit are sent after carrying out digital-to-analogue conversion to main control module, and main control module is by the voltage signal values
Actual voltage value is converted to according to intrinsic standoff ratio, compares the error of actual voltage value and theoretical voltage, if error is too big, needed
Calibration again is carried out, calibration information is sent by CAN and is controlled to battery management unit controller, battery management unit
Device according to error amount adjust output voltage, then collection voltages are compared voltage sampling circuit again, the like, until school
Quasi- number of times reaches 5 times or calibrates qualified, and stores calibration result, and calibration result can be derived by USB interface.Mistake in calibration
Cheng Zhong, if certain passage calibration is qualified, it indicates that lamp gives a green light and reminds user that this passage calibration passes through, if unqualified,
Bright light and do not blow a whistle.
In correcting current pattern, for the calibration that each passage to be calibrated executes multiple current points, for each
Calibration information is sent to the controller of battery management unit, the control of battery management unit by CAN for individual current point, device
The working phase set according to calibration information is run by device processed, exports the electric current of calibration point, current divider or hall sensing
The electric current of device sampling channel simultaneously produces the voltage signal proportional with current value, and the voltage that samples is believed by analog to digital conversion circuit
Exported to main control module by spi bus after number carrying out analog-to-digital conversion, main control module by the voltage signal according to current sample when
Ratio be converted to actual current value, compare the error of actual current value and theoretical current, if error is too big, need to carry out
Calibration again, sends calibration information by CAN and gives battery management unit controller, battery management unit controller root
Output current is adjusted according to error amount, device is then tapped off or Hall element is gathered electric current again and is compared, the like, until
Calibration number of times reach 5 times or calibrate qualified, and store calibration result, calibration result can be derived by USB interface.In calibration
During, if certain passage calibration is qualified, it indicates that lamp gives a green light and reminds user that this passage calibration passes through, if do not conformed to
Lattice, then bright light and do not blow a whistle.
In sum, implement the self-checking device and calibration steps of the present invention, have the advantages that：The present invention
Apparatus structure simple, small volume is easy to carry；Whole device is simple with the line of battery management unit, it is only necessary to which connection will be total
Line communication interface and passage access interface interface corresponding with battery management unit and passage connection, greatly improving actually makes
Operability with scene；The hardware versatility of device is good, almost can compatible market by changing calibration algorithm and communication protocol
Upper all battery management units.
Embodiments of the invention are described above in conjunction with accompanying drawing, but be the invention is not limited in above-mentioned concrete
Embodiment, above-mentioned specific embodiment are only schematic, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (10)
1. a kind of self-checking device, the passage for battery management unit are calibrated, it is characterised in that described device includes：
Main control module, for executing calibration algorithm；
Bus communication interface, for connecting battery management unit to send calibration information to battery management unit；
One passage access interface, for connecting at least one passage to be calibrated；
One load input interface, for connecting at least one passage to be calibrated in correcting current pattern；
Voltage calibration Acquisition Circuit, sends to main control module for acquisition channel voltage and after carrying out digital-to-analogue conversion；
Correcting current Acquisition Circuit, sends to main control module for acquisition channel electric current and after carrying out digital-to-analogue conversion；
Calibration mode handover module, for, under the control of main control module, selecting voltage calibration collection in voltage calibration pattern
Circuit is connected with passage access interface, is selected correcting current Acquisition Circuit and load input interface in correcting current pattern and is led to
Road access interface connection.
2. self-checking device according to claim 1, it is characterised in that the calibration algorithm is included in voltage calibration mould
Under formula, for the calibration that each passage to be calibrated executes multiple electrical voltage points, under correcting current pattern, treat for each
The passage of calibration executes the calibration of multiple current points；
Wherein, the calibration for each electrical voltage point/current point includes：Calibration information is sent to battery management unit notifying electricity
Pond management equipment exports corresponding voltage/current to specified passage to be calibrated, compares the voltage/current and current electricity of collection
Error between the corresponding theoretical voltage/electric current of pressure point/current point, if error is within preset range, judges that calibration is closed
Lattice, terminate the calibration to current voltage point；If error exceeds preset range, the school comprising this calibration result is sent again
Calibration information to battery management unit re-starts calibration, reaches up to the calibration number of times for current voltage point/current point default
Number of times or calibration are qualified；
Wherein, battery management unit, will be according to calibration result adjustment output when the calibration information comprising calibration result is received
Voltage.
3. self-checking device according to claim 1, it is characterised in that described device also includes：
Quantity and the one-to-one DIP device of passage, are connected with main control module, for selecting passage to be calibrated；
Calibration controlling switch, is connected with main control module, for selecting calibration mode；
Quantity and the one-to-one calibrated channel indicator lamp of passage, are connected with main control module, for pointing out the calibration of respective channel
As a result.
4. self-checking device according to claim 3, it is characterised in that described device also includes that is connected with main control module
The buzzer for connecing, for coordinating the calibration result of prompting respective channel with calibrated channel indicator lamp.
5. self-checking device according to claim 1, it is characterised in that the voltage calibration Acquisition Circuit includes：
Voltage sampling circuit, for the voltage signal of sampling channel；
Analog to digital conversion circuit, for exporting after the voltage signal of sampling is carried out analog-to-digital conversion to main control module being calculated reality
The channel voltage on border.
6. self-checking device according to claim 1, it is characterised in that the correcting current Acquisition Circuit includes：
Current divider and/or Hall element, the electric current for sampling channel simultaneously produce corresponding voltage signal；
Two analog to digital conversion circuits corresponding with current divider, Hall element difference, for carrying out mould by the voltage signal of sampling
Export to main control module being calculated actual channel current after number conversion.
7. self-checking device according to claim 1, it is characterised in that device also includes：
Calibration result output interface, is connected with main control module, for deriving calibration result；
Monitor screen communication interface, is connected with main control module, is shown for sending to monitor screen calibration data in real time.
8. self-checking device according to claim 1, it is characterised in that device also includes：
Universal meter communication interface, is connected with main control module, for connecting universal meter, is realized to device itself under self-calibration mode
Calibration.
9. self-checking device according to claim 1, it is characterised in that described device also includes housing all of circuit
Housing with module.
10. a kind of automatic calibrating method of the self-checking device based on described in claim 1, for the logical of battery management unit
Calibrate in road, it is characterised in that include：
Bus communication interface is connected with the bus communication interface of battery management unit, passage access interface is treated with least one
The passage connection of calibration；
Main control module selects voltage calibration Acquisition Circuit to connect with passage access interface in voltage calibration pattern, in correcting current
Correcting current Acquisition Circuit is selected to connect with passage access interface with load input interface during pattern；
Main control module sends calibration information according to calibration algorithm by bus communication interface and executes calibration to battery management unit.
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| CN201611260655.8A CN106501745A (en) | 2016-12-30 | 2016-12-30 | A kind of self-checking device and calibration steps |
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| CN116185784A (en) * | 2023-04-25 | 2023-05-30 | 荣耀终端有限公司 | Calibration device, calibration system and acquisition system |
| CN117347940A (en) * | 2023-12-05 | 2024-01-05 | 深圳市易检车服科技有限公司 | Calibration method, device, equipment and storage medium for battery charging and discharging equipment |
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| CN110426645A (en) * | 2019-08-22 | 2019-11-08 | 深圳市洛仑兹技术有限公司 | Multichannel charge-discharge parameter calibration method and system |
| CN111337871A (en) * | 2020-02-29 | 2020-06-26 | 贵州电网有限责任公司 | Electric energy meter and terminal communication module IO port level adjustable circuit |
| CN113342121A (en) * | 2020-11-10 | 2021-09-03 | 明峰医疗系统股份有限公司 | Multi-channel PET power supply automatic calibration circuit and calibration method |
| CN112444699A (en) * | 2020-11-23 | 2021-03-05 | 福建时代星云科技有限公司 | Charging and discharging module conversion rate calibration method, system, equipment and medium |
| CN113447871A (en) * | 2021-06-24 | 2021-09-28 | 北京海博思创科技股份有限公司 | Calibration method and device |
| CN113484641A (en) * | 2021-07-05 | 2021-10-08 | 广东恒翼能科技有限公司 | Battery charging and discharging equipment calibration tool system |
| CN114089198A (en) * | 2021-10-22 | 2022-02-25 | 深圳市有方科技股份有限公司 | Battery calibration method, electronic device and computer readable medium |
| CN114138046A (en) * | 2021-11-26 | 2022-03-04 | 珠海格力电器股份有限公司 | Sampling circuit calibration control method and system and photovoltaic air conditioner |
| CN114138046B (en) * | 2021-11-26 | 2024-05-03 | 珠海格力电器股份有限公司 | Sampling circuit calibration control method and system and photovoltaic air conditioner |
| CN116185784A (en) * | 2023-04-25 | 2023-05-30 | 荣耀终端有限公司 | Calibration device, calibration system and acquisition system |
| CN116185784B (en) * | 2023-04-25 | 2023-09-08 | 荣耀终端有限公司 | Calibration device, calibration system and acquisition system |
| CN117347940A (en) * | 2023-12-05 | 2024-01-05 | 深圳市易检车服科技有限公司 | Calibration method, device, equipment and storage medium for battery charging and discharging equipment |
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