CN109193893A - A kind of method and system preventing control discharged or defective battery - Google Patents
A kind of method and system preventing control discharged or defective battery Download PDFInfo
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- CN109193893A CN109193893A CN201811239111.2A CN201811239111A CN109193893A CN 109193893 A CN109193893 A CN 109193893A CN 201811239111 A CN201811239111 A CN 201811239111A CN 109193893 A CN109193893 A CN 109193893A
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- control
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- current voltage
- voltage state
- pantograph
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of methods for preventing control discharged or defective battery, comprising: obtains the current voltage state of control battery；Judge whether current voltage state meets undervoltage condition；If so, control locomotive charger takes electricity from contact net by pantograph, charge for the control battery.It can be seen that, in practical applications, using the solution of the present invention, in the non-power shortage of control battery, obtain the voltage status of control battery, if it is under-voltage to control battery appearance, locomotive charger is controlled at once by pantograph and takes electricity from contact net, for control battery charging, to prevent control discharged or defective battery, it is control battery charging by contact net, the charging time is short, and charging rate is fast.The invention also discloses a kind of systems for preventing control discharged or defective battery, have above-mentioned beneficial effect.
Description
Technical field
The present invention relates to field of track traffic, more particularly to a kind of method and system for preventing control discharged or defective battery.
Background technique
When electric locomotive is under parked state, locomotive control by the control storage battery power supply in electric locomotive,
When driver pulls rising bow key-lifting switch, when starting electric locomotive, locomotive control detects the current state of electric locomotive
Whether rising bow condition is met, if satisfied, locomotive control issues rising bow instruction, electric locomotive rises pantograph and takes from contact net
Electricity.
However, when electric locomotive for a long time park, may due to control discharged or defective battery, cause locomotive control without
Method issues rising bow instruction, prevent electric locomotive from rising pantograph, can not normally start so as to cause electric locomotive.It is encountering
When above situation, the prior art can only give control battery charging by Vehicular charger by the way of taking electricity from his vehicle,
After charging complete, then the operation of starting electric locomotive is executed, and the charging process of the prior art generally requires 5-8 hours, the time
It is at high cost, influence the normal work of electric locomotive.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The object of the present invention is to provide a kind of method and system for preventing control discharged or defective battery, do not lose in control battery
When electric, the voltage status of control battery is obtained, if control battery appearance is under-voltage, locomotive charger is controlled at once and passes through
Pantograph takes electricity from contact net, controls electric power storage by contact net to prevent control discharged or defective battery for control battery charging
Pond charging, the charging time is short, and charging rate is fast.
In order to solve the above technical problems, the present invention provides a kind of methods for preventing control discharged or defective battery, comprising:
Obtain the current voltage state of control battery；
Judge whether current voltage state meets undervoltage condition；
If so, control locomotive charger takes electricity from contact net by pantograph, charge for the control battery.
Preferably, the process of the current voltage state for obtaining control battery specifically:
The current voltage state of control battery is obtained by under-voltage relay；
The then process for judging current voltage state and whether meeting undervoltage condition specifically:
Judge whether the under-voltage relay is attracted；
If so, determining that current voltage state is unsatisfactory for undervoltage condition；
If it is not, then determining that current voltage state meets the undervoltage condition.
Preferably, the process of the current voltage state for obtaining control battery specifically:
The voltage value of control battery is obtained by voltage sensor；
The then process for judging current voltage state and whether meeting undervoltage condition specifically:
Judge whether the voltage value is less than preset value；
If so, determining that current voltage state meets undervoltage condition；
If it is not, then determining that current voltage state is unsatisfactory for the undervoltage condition.
Preferably, the control locomotive charger takes the process of electricity by pantograph from contact net specifically:
Electricity is taken from contact net by pantograph by terminal control locomotive charger, wherein the terminal includes that backstage takes
Business device or mobile terminal.
Preferably, the process for taking electricity from contact net by pantograph by terminal control locomotive charger specifically:
When current voltage state meets the undervoltage condition, alarm command is generated, it will by wireless data transfer module
The alarm command is transmitted to terminal；
The terminal controls locomotive charger by pantograph and takes electricity from contact net after receiving the alarm command.
Preferably, before the control locomotive charger takes electricity from contact net by pantograph, this method further include:
Judge whether the current state of electric locomotive meets rising bow condition；
It is risen if so, controlling the pantograph, while controlling main circuit breaker closure, so that the locomotive charger passes through institute
It states pantograph and takes electricity from the contact net；
If it is not, generate prompt information, and described in by the wireless data transfer module being sent to the prompt information
Terminal.
Preferably, the control locomotive charger takes electricity from contact net by pantograph, charges for the control battery
Later, this method further include:
When the current voltage state of the control battery meets preset condition, controlling the locomotive charger stopping is
The control battery charging.
Preferably, the control locomotive charger stops being the process for controlling battery charging specifically:
It controls the pantograph to fall, and controls the main circuit breaker and disconnect, be to control the locomotive charger stopping
The control battery charging.
In order to solve the above technical problems, the present invention also provides a kind of systems for preventing control discharged or defective battery, comprising:
Detection module, for obtaining the current voltage state of control battery；
Judgment module, for judging whether current voltage state meets undervoltage condition, if so, trigger control module；
The control module takes electricity from contact net by pantograph for controlling locomotive charger, is the control electric power storage
Pond charging.
Preferably, the control module is also used to meet preset condition in the current voltage state of the control battery
When, it controls the locomotive charger and stops being that the control battery charges.
The present invention provides a kind of methods for preventing control discharged or defective battery, comprising: obtains the current electricity of control battery
Pressure condition；Judge whether current voltage state meets undervoltage condition；If so, control locomotive charger passes through pantograph from contact net
Electricity is taken, for control battery charging.As it can be seen that in practical applications, using the solution of the present invention, in the control non-power shortage of battery
When, obtain control battery voltage status, if control battery occur it is under-voltage, at once control locomotive charger by by
Pantograph takes electricity from contact net, controls battery by contact net to prevent control discharged or defective battery for control battery charging
Charging, charging time only need 2-3h, and charging rate is fast.The present invention also provides it is a kind of prevent control discharged or defective battery system,
With preventing the identical beneficial effect of the control method of discharged or defective battery with above-mentioned.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of step flow chart of method for preventing control discharged or defective battery provided by the present invention；
Fig. 2 is a kind of structural schematic diagram of the charging system of electric locomotive provided by the present invention；
Fig. 3 is the structural schematic diagram of the charging system of another electric locomotive provided by the present invention；
Fig. 4 is a kind of structural schematic diagram of system for preventing control discharged or defective battery provided by the present invention.
Specific embodiment
Core of the invention is to provide a kind of method and system for preventing control discharged or defective battery, does not lose in control battery
When electric, the voltage status of control battery is obtained, if control battery appearance is under-voltage, locomotive charger is controlled at once and passes through
Pantograph takes electricity from contact net, controls electric power storage by contact net to prevent control discharged or defective battery for control battery charging
Pond charging, the charging time is short, and charging rate is fast.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is please referred to, Fig. 1 is a kind of step process of method for preventing control discharged or defective battery provided by the present invention
Figure, comprising:
Step 1: obtaining the current voltage state of control battery；
Step 2: judging whether current voltage state meets undervoltage condition, if so, executing step 3；
It is understood that the locomotive control of electric locomotive is by controlling when electric locomotive is in parked state
Storage battery power supply, once control discharged or defective battery, locomotive control is in paralyzed state, so that driver pulls rising bow and pulls
When key is to start electric locomotive, electric locomotive can not normally start.Consider so far, voltage status of the present invention to control battery
(including under-voltage condition and normal condition) is monitored, and the current voltage state that will acquire and the first preset value are compared
Be actually compared with, the purpose being compared here in order to judge to control whether the current voltage state of battery is under-voltage condition,
If meeting undervoltage condition, illustrate that controlling accumulator positive is in under-voltage condition, to avoid control discharged or defective battery, at this time should
It charges to control battery, if being unsatisfactory for undervoltage condition, illustrates that the current voltage state for controlling battery is normal shape
State.Wherein, the undervoltage condition in the present invention is for judging whether control battery is under-voltage, is not for judging to control electric power storage
Pond whether power shortage, it is to be understood that control battery, which be in under-voltage condition still, to be locomotive control power supply, at this time
Locomotive control cannot be locomotive control still in normal operating conditions, and when controlling battery and being in power shortage state
Power supply, locomotive control are in paralyzed state.
Wherein, the mode for obtaining the current voltage state of control battery can be real-time acquisition, be also possible to by default
Period obtains, and predetermined period can be set with reference to the discharge characteristic of control battery, controls battery using real-time obtain
The advantage of current voltage state be that can ensure when the current voltage state for controlling battery meets undervoltage condition just at once
It charges to it, improves the reliability of this programme.Correspondingly, using the current electricity for obtaining control battery by predetermined period
The advantage of pressure condition is can to reduce calculation times, and if being set according to the discharge characteristic of control battery to predetermined period
The current voltage state obtained can also be made more targeted, so that subsequent and undervoltage condition is compared.
Certainly, the acquisition modes needs for controlling battery current voltage state are set according to actual requirement of engineering, this
Invention is it is not limited here.
Step 3: control locomotive charger takes electricity from contact net by pantograph, for control battery charging.
Specifically, the structural schematic diagram based on the charging system of a kind of electric locomotive provided by the present embodiment is referring to Fig. 2
It is shown, including control battery 1, locomotive charger 2,3 main circuit breaker 4 of central control unit, pantograph 5, power supply circuit 6 etc.,
Pantograph 5 is set at the top of electric locomotive, and the first end of pantograph 5 connect with the first end of main circuit breaker 4, and the of main circuit breaker 4
Two ends are connect with the first end of power supply circuit 6, and the second end of power supply circuit 6 is connect with the first end of locomotive charger 2, and locomotive fills
The second end of motor 2 is connect with control battery 1, when the current voltage state for detecting control battery 1 meets undervoltage condition
When, pantograph 1 is controlled by central control unit 3 and is risen, its second end is connected with contact net, takes electricity from contact net, and close
Co-host break road device 4 forms supply access, and locomotive charger 2 is allow to take electricity to charge for control battery 1 from contact net, to prevent
Only locomotive storage batteries power shortage.It obtains that electricity is taken only to need 2- for the charging time of control battery charging from contact net by test of many times
3 hours, compared to the prior art in the mode that electricity is taken from other vehicles, reduce the charging time, and this programme do not need it is external
Power supply takes electricity using contact net, has saved cost.
The present invention provides a kind of methods for preventing control discharged or defective battery, comprising: obtains the current electricity of control battery
Pressure condition；Judge whether current voltage state meets undervoltage condition；If so, control locomotive charger passes through pantograph from contact net
Electricity is taken, for control battery charging.As it can be seen that in practical applications, using the solution of the present invention, in the control non-power shortage of battery
When, obtain control battery voltage status, if control battery occur it is under-voltage, at once control locomotive charger by by
Pantograph takes electricity from contact net, controls battery by contact net to prevent control discharged or defective battery for control battery charging
Charging, charging time only need 2-3h, and charging rate is fast.
On the basis of the above embodiments:
Embodiment as one preferred obtains the process of the current voltage state of control battery specifically:
The current voltage state of control battery is obtained by under-voltage relay；
Then judge whether current voltage state meets the process of undervoltage condition specifically:
Judge whether under-voltage relay is attracted；
If so, determining that current voltage state is unsatisfactory for undervoltage condition；
If it is not, then determining that current voltage state meets undervoltage condition.
Specifically, the current voltage shape of control battery can be obtained using the under-voltage relay inside electric locomotive
State.It is understood that the current voltage state of control battery can be divided into normal condition and under-voltage condition, normal condition is just
Refer to that the current voltage value of control battery is greater than or equal to low-voltage alarm threshold value, under-voltage condition refers to control battery
Current voltage value is less than low-voltage alarm threshold value.According to the working principle of under-voltage relay, when the current electricity of control battery
When pressure value is greater than or equal to the low-voltage alarm threshold value of under-voltage relay setting, under-voltage relay is to be attracted, and controlling
When the current voltage value of battery alarms threshold value down to low-voltage, since the electromagnetic force that electromagnetic system generates can reduce, multiple
Under the action of the spring of position, under-voltage relay is to disconnect, and therefore, control can be obtained by judging whether under-voltage relay is attracted
The current voltage state of battery, specifically, illustrating the current voltage state of control battery not when under-voltage relay is attracted
Meet undervoltage condition, be normal condition, when under-voltage relay disconnects, illustrates that the current voltage state for controlling battery meets and owe
Press strip part is under-voltage condition.In addition, obtaining current voltage state using the under-voltage relay inside electric locomotive, do not need
Additional acquisition device, it is at low cost.
Embodiment as one preferred obtains the process of the current voltage state of control battery specifically:
The voltage value of control battery is obtained by voltage sensor；
Then judge whether current voltage state meets the process of undervoltage condition specifically:
Judge whether voltage value is less than preset value；
If so, determining that current voltage state meets undervoltage condition；
If it is not, then determining that current voltage state is unsatisfactory for undervoltage condition.
Specifically, obtaining control in addition to the under-voltage relay inside can using the electric locomotive of upper embodiment introduction
The current voltage state of battery can also be directly acquired the current voltage value of control battery by voltage sensor, be adopted
The mode for obtaining current voltage value with voltage sensor is more intuitive, and precision is higher.
Specifically, the current voltage value and low-voltage that can directly will acquire by voltage sensor are alarmed threshold value into
Row comparison when current voltage value is greater than or equal to low-voltage alarm threshold value, illustrates that the current voltage state for controlling battery is
Normal condition when current voltage value is less than low-voltage alarm threshold value, illustrates that the current voltage state for controlling battery is under-voltage
State, it is to be understood that direct comparison numerically, the comparison result that can make are more accurate, more intuitive.
Embodiment as one preferred, control locomotive charger take the process of electricity specific by pantograph from contact net
Are as follows:
Electricity is taken from contact net by pantograph by terminal control locomotive charger, wherein terminal includes background server
Or mobile terminal.
Embodiment as one preferred takes the mistake of electricity by terminal control locomotive charger by pantograph from contact net
Journey specifically:
When current voltage state meets undervoltage condition, alarm command is generated, will be alarmed by wireless data transfer module
Instruction is transmitted to terminal；
Terminal controls locomotive charger by pantograph and takes electricity from contact net after receiving alarm command.
Electricity is taken from contact net by pantograph specifically, locomotive charger can be controlled by remote terminal, works as control
When the current voltage state of battery meets undervoltage condition, alarm command is generated, to prompt the electricity of the control battery low, eventually
End can remotely control pantograph rise and main circuit breaker closure after receiving alarm command, to control locomotive charging
Machine takes electricity from contact net by pantograph, and terminal here can be background server or mobile terminal (such as mobile phone), terminal
By wireless data transfer module and locomotive control data interaction is carried out, selects do not limited by external environmental factor here
Wireless data transfer module further improves the versatility of this programme.
Embodiment as one preferred, before control locomotive charger takes electricity from contact net by pantograph, this method
Further include:
Judge whether the current state of electric locomotive meets rising bow condition；
If so, control pantograph rises, while controlling main circuit breaker closure, so as to locomotive charger by pantograph from connecing
Net-fault takes electricity；
If it is not, generating prompt information, and information will be prompted to by wireless data transfer module and be sent to terminal.
Specifically, the problem of considering rising bow safety, " terminal is receiving alarm command for described in a upper embodiment
Afterwards, can remotely control pantograph rise and main circuit breaker closure " process be specifically as follows, terminal refers to receiving alarm
After order, generates rising bow and be closed main severed finger order, locomotive control carries out certainly after receiving rising bow and the main severed finger order of closure
Inspection, whether the state for mainly detecting current electric locomotive meets rising bow condition, namely judgement rises whether pantograph pacifies at this time
Entirely, if meeting rising bow condition, control pantograph rises and main circuit breaker closure, if being unsatisfactory for rising bow condition,
A prompt information is returned to terminal, so that consistency operation personnel are seeing that prompt information is laggard by wireless data transfer module
Row subsequent processing.
Embodiment as one preferred controls locomotive charger by pantograph and takes electricity from contact net, to control electric power storage
After the charging of pond, this method further include:
When the current voltage state for controlling battery meets preset condition, control locomotive charger stops as control electric power storage
Pond charging.
Embodiment as one preferred, the process that control locomotive charger stops as control battery charging specifically:
Control pantograph is fallen, and controls main circuit breaker disconnection, stops filling for control battery to control locomotive charger
Electricity.
Specifically, illustrating that controlling battery has filled when the current voltage state for controlling battery meets preset condition
Electricity finishes, and control battery is not at under-voltage condition, at this point, control locomotive charger stops as control battery charging, control
Locomotive charger stops being the process that control battery charges being to fall pantograph and simultaneously switch off main circuit breaker, with disconnected
Open the supply access of control battery.
In conclusion based on the above embodiment, the present invention also provides the charging system of another electric locomotive, structures
Schematic diagram is referring to shown in Fig. 3, and on the basis of Fig. 2, which further includes under-voltage relay 7, wireless data transfer module
8, background server 9, specifically, the current voltage state of control battery 1 is obtained by under-voltage relay, in current voltage shape
When state is under-voltage condition, alarm command is generated, alarm command is issued by background server 9 by wireless data transfer module 8, with
Prompt the electricity of the operator on the backstage control battery 1 low, the operator on backstage can lead to after receiving alarm command
Cross that wireless data transfer module 9 remotely issues rising bow and the main severed finger of closure enables, with control locomotive control receive rising bow and
After being closed main severed finger order, whether self-test rising bow and the main broken strip part of closure meet, if satisfied, controlling the rise of pantograph 5, main open circuit again
Device 4 is closed, so that crossing Vehicular charger 2 takes electricity from contact net, is charged for control battery 1, if not satisfied, generating feedback signal
And feedback signal is sent to by background server 9 by wireless data transfer module, prompt the operator on the backstage electric power machine
The rising bow and the main broken strip part of closure of vehicle are unsatisfactory for.
Referring to figure 4., Fig. 4 is a kind of system for preventing control discharged or defective battery provided by the present invention, comprising:
Detection module 01, for obtaining the current voltage state of control battery；
Judgment module 02, for judging whether current voltage state meets undervoltage condition, if so, trigger control module 03；
Control module 03 takes electricity from contact net by pantograph for controlling locomotive charger, for control battery charging.
Embodiment as one preferred, control module 03 are also used to meet in the current voltage state of control battery
When preset condition, control locomotive charger stops as control battery charging.
A kind of system preventing control discharged or defective battery provided by the present invention has prevents control battery from losing with above-mentioned
The identical beneficial effect of method of electricity.
Above-described embodiment is please referred to for a kind of introduction of system for preventing control discharged or defective battery provided by the present invention,
Details are not described herein by the present invention.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of method for preventing control discharged or defective battery characterized by comprising
Obtain the current voltage state of control battery；
Judge whether current voltage state meets undervoltage condition；
If so, control locomotive charger takes electricity from contact net by pantograph, charge for the control battery.
2. the method according to claim 1 for preventing control discharged or defective battery, which is characterized in that the acquisition controls electric power storage
The process of the current voltage state in pond specifically:
The current voltage state of control battery is obtained by under-voltage relay；
The then process for judging current voltage state and whether meeting undervoltage condition specifically:
Judge whether the under-voltage relay is attracted；
If so, determining that current voltage state is unsatisfactory for undervoltage condition；
If it is not, then determining that current voltage state meets the undervoltage condition.
3. the method according to claim 1 for preventing control discharged or defective battery, which is characterized in that the acquisition controls electric power storage
The process of the current voltage state in pond specifically:
The voltage value of control battery is obtained by voltage sensor；
The then process for judging current voltage state and whether meeting undervoltage condition specifically:
Judge whether the voltage value is less than preset value；
If so, determining that current voltage state meets undervoltage condition；
If it is not, then determining that current voltage state is unsatisfactory for the undervoltage condition.
4. the method for preventing control discharged or defective battery according to claim 1 to 3, which is characterized in that the control
Locomotive charger processed takes the process of electricity by pantograph from contact net specifically:
Electricity is taken from contact net by pantograph by terminal control locomotive charger, wherein the terminal includes background server
Or mobile terminal.
5. the method according to claim 4 for preventing control discharged or defective battery, which is characterized in that described to pass through terminal control
Locomotive charger takes the process of electricity by pantograph from contact net specifically:
When current voltage state meets the undervoltage condition, alarm command is generated, it will be described by wireless data transfer module
Alarm command is transmitted to terminal；
The terminal controls locomotive charger by pantograph and takes electricity from contact net after receiving the alarm command.
6. the method according to claim 5 for preventing control discharged or defective battery, which is characterized in that the control locomotive charging
Before machine takes electricity from contact net by pantograph, this method further include:
Judge whether the current state of electric locomotive meets rising bow condition；
Risen if so, controlling the pantograph, while controlling main circuit breaker closure, so as to the locomotive charger by it is described by
Pantograph takes electricity from the contact net；
If it is not, generating prompt information, and the prompt information is sent to by the terminal by the wireless data transfer module.
7. the method according to claim 6 for preventing control discharged or defective battery, which is characterized in that the control locomotive charging
Machine takes electricity from contact net by pantograph, after control battery charging, this method further include:
When the current voltage state of the control battery meets preset condition, it is described for controlling the locomotive charger stopping
Control battery charging.
8. the method according to claim 7 for preventing control discharged or defective battery, which is characterized in that the control locomotive
Charger stops being the process for controlling battery charging specifically:
It controls the pantograph to fall, and controls the main circuit breaker and disconnect, be described to control the locomotive charger stopping
Control battery charging.
9. a kind of system for preventing control discharged or defective battery characterized by comprising
Detection module, for obtaining the current voltage state of control battery；
Judgment module, for judging whether current voltage state meets undervoltage condition, if so, trigger control module；
The control module takes electricity from contact net by pantograph for controlling locomotive charger, fills for the control battery
Electricity.
10. the system according to claim 9 for preventing control discharged or defective battery, which is characterized in that
The control module is also used to when the current voltage state of the control battery meets preset condition, described in control
Locomotive charger stops being that the control battery charges.
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| CN201811239111.2A CN109193893A (en) | 2018-10-23 | 2018-10-23 | A kind of method and system preventing control discharged or defective battery |
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| CN201811239111.2A CN109193893A (en) | 2018-10-23 | 2018-10-23 | A kind of method and system preventing control discharged or defective battery |
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| CN113131577A (en) * | 2021-04-19 | 2021-07-16 | 北京鼎汉技术集团股份有限公司 | Train charging control method and train charging control device |
| CN113890141A (en) * | 2021-09-27 | 2022-01-04 | 华特数字科技有限公司 | Battery state judgment method, system and chip of intelligent flow measurement robot |
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Application publication date: 20190111 |
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