CN110040024A - A kind of electric car charger - Google Patents
A kind of electric car charger Download PDFInfo
- Publication number
- CN110040024A CN110040024A CN201910389626.9A CN201910389626A CN110040024A CN 110040024 A CN110040024 A CN 110040024A CN 201910389626 A CN201910389626 A CN 201910389626A CN 110040024 A CN110040024 A CN 110040024A
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- CN
- China
- Prior art keywords
- module
- mcu control
- signal
- plug
- over
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of electric car chargers, including the selection of over-voltage detection module, over-current detection module, detection of electrical leakage module, ground detection module, plug temperature detecting module, electric current and shell damage testing module, signal interworking module, supply access module, Emergency Power to cut off module, state display module, MCU control module.The present invention can achieve the adjustable purpose of charging current by plug replacement；What emergency switch of the invention was directly cut off is major loop relay coil driving circuit, even if MCU fails, nor affects on emergency switch cutting major loop relay contact, enhances reliability；The present invention is provided with a photosensitive resistance sensor in charger internal, and when shell breakage has light to enter in totally enclosed shell, photo resistance value changes, and MCU detects that tube apparatus is not in which kind of state will cut off main circuit power immediately for this variation.
Description
Technical field
The present invention relates to a kind of electric car chargers.
Background technique
Currently, the typically no electric current selection function of automobile charger on the market, fixed current charging, and most of vapour
Vehicle charger does not have emergency switch, and small part automobile charger is equipped with emergency switch, is to detect key by MCU to control power supply again
Driving triode (or metal-oxide-semiconductor) the cutting major loop relay coil of access disconnects relay contact, when MCU is interfered mistake
Effect, emergency switch also will failures.New energy vehicle charger has certain requirement of shelter (IP58), and will be tight after shell is damaged
Ghost image rings the protective capacities of product.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings, provides a kind of adjustable charging current, enhancing reliability, peace
Complete reliable electric car charger.
The purpose of the present invention is achieved through the following technical solutions: a kind of electric car charger, including over-voltage detects mould
Block, over-current detection module, detection of electrical leakage module, ground detection module, plug temperature detecting module, electric current selection and shell are damaged
Detection module, signal interworking module, supply access module, Emergency Power cut off module, state display module, MCU control module；
Over-voltage detection module has over-voltage protecting function:
When the external charging voltage of input is more than AC253V, over-voltage detection module issues corresponding signal to MCU control module,
MCU control module controls supply access module cutting main circuit power immediately, protects automotive interior circuit from impacting with high pressure
Risk；
Over-current detection module has overcurrent protection function:
When charging major loop charging current is more than 15A, MCU control module receives the corresponding signal of the over-current detection module, MCU
Control module controls supply access module and cuts off main circuit power, the risk for protecting automotive interior circuit to burn out from high current；
Detection of electrical leakage module has creepage protection function:
Non-loaded regardless of having after powering on, if there is leaking electricity more than 25mA, detection of electrical leakage module sends a signal to MCU and controls mould
Block, MCU control module control supply access module and cut off main circuit power, it is ensured that user and its personal safety close to person；
Ground detection module has the function of grounding monitor:
Judge whether the equipment is grounded well by ground detection module, after energization, ground detection module does not monitor to be grounded
Signal issues unearthed signal and notifies that, to the MCU control module, MCU control module control supply access module cutting is led back
Road power supply, it is ensured that user security；
The function of plug temperature detecting module and electric current selection and shell damage testing module:
Plug temperature detecting module and electric current selection and shell damage testing module are mounted in plug, plug temperature detecting module
For plug thermistor, electric current selecting module is that electric current selects resistance, and shell damage testing module is shell photo resistance, charging
If temperature abnormality occurred in plug in the process, after MCU control module detects, control supply access module cuts off main circuit power,
Ensure that plug and socket is not burnt out because temperature is excessively high, selects corresponding charging voltage by replacing different incoming line plugs；
Signal interworking module has signal transfer functions:
When self-test meets charge condition after energization by GB the requirement of T18487.1-2015 believe to the PWM that automobile issues particular requirement
Number or CP signal, automobile receives the amplitude for changing pwm signal or CP signal after signal, and notifies MCU control module, MCU control
Molding block control supply access module is opened major loop relay and is started to charge；
The function of supply access module, Emergency Power cutting module:
It is emergency power-off switch that Emergency Power, which cuts off module, and emergency power-off switch is mounted on the shell of charger,
The relay contact that MCU control module control emergency power-off switch driving connects on zero, firewire turns on or off, in turn
The on-off of power supply is controlled, and the emergency power-off switch is located on relay driving circuit, for cutting off or connecting drive
Dynamic triode.
State display module has the function of status display part:
By the display combination that LED is different in charging process, each state is indicated, including power supply is connected, charged normal, overcurrent report
Police, over voltage alarm, ground fault alarm, overtemperature alarm, emergency cut-off.
Compared with the prior art, the present invention has the following advantages:
The present invention can achieve the adjustable purpose of charging current by plug replacement；What emergency switch of the invention was directly cut off is
Major loop relay coil driving circuit nor affects on emergency switch cutting major loop relay contact, increases even if MCU fails
Strong reliability；The present invention is provided with a photosensitive resistance sensor in charger internal, when shell breakage has light to enter full envelope
In the shell closed, photo resistance value changes, and MCU detects that tube apparatus is not in which kind of state will cut off master immediately for this variation
Ring current.
Detailed description of the invention:
Fig. 1 is module map of the invention；
Fig. 2 is the circuit diagram of over-voltage detection module；
Fig. 3 is the circuit diagram of over-current detection module；
Fig. 4 is the circuit diagram of detection of electrical leakage module；
Fig. 5 is the circuit diagram of ground detection module；
Fig. 6 is the circuit diagram of grounding monitor, shell damage testing and electric current selected section；
Fig. 7 is the circuit diagram that signal occurs；
Fig. 8 is the circuit diagram that supply access module and Emergency Power cut off module；
Fig. 9 is the circuit diagram of state display module；
Figure label: 1- over-voltage detection module, 2- over-current detection module, 3- detection of electrical leakage module, 4- ground detection module, 5- letter
Number interworking module, 6- supply access module, 7- state display module, 8-MCU control module.
Specific embodiment:
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be to the skill in the embodiment of the present invention
Art scheme is clearly and completely described, it is clear that and described embodiment is a module embodiments of the invention, rather than all
Embodiment.The elements and features described in one embodiment of the invention can be with one or more other embodiment party
Elements and features shown in formula combine.It should be noted that being omitted for purposes of clarity, in explanation unrelated to the invention
, the expression and description of component known to persons of ordinary skill in the art and processing.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained under the premise of not making the creative labor, belongs to guarantor of the present invention
The range of shield.
As shown in Figure 1, a kind of electric car charger, including over-voltage detection module 1, over-current detection module 2, detection of electrical leakage
Module 3, ground detection module 4, plug temperature detecting module, electric current selection and shell damage testing module, signal interworking module
5, supply access module 6, Emergency Power cut off module, state display module 7, MCU control module 8；
As shown in Fig. 2, over-voltage detection module 1 has over-voltage protecting function:
When the external charging voltage of input is more than AC253V, over-voltage detection module 1 issues corresponding signal to MCU control module 8,
MCU control module 8 controls supply access module 6 immediately and cuts off main circuit power, protects automotive interior circuit from impacting with high pressure
Risk；
As shown in figure 3, over-current detection module 2 has overcurrent protection function:
When charging major loop charging current is more than 15A, MCU control module 8 receives the corresponding signal of over-current detection module 2, MCU
Control module 8 controls supply access module 6 and cuts off main circuit power, the wind for protecting automotive interior circuit to burn out from high current
Danger；
As shown in figure 4, detection of electrical leakage module 3 has creepage protection function:
Non-loaded regardless of having after powering on, if there is electric leakage is more than 25mA, detection of electrical leakage module 3 sends a signal to MCU control
Module 8, MCU control module 8 control supply access module 6 and cut off main circuit power, it is ensured that user and its person close to person
Safety；
As shown in figure 5, ground detection module 4 has the function of grounding monitor:
Judge whether the equipment is grounded well by ground detection module 4, after energization, ground detection module 4 does not monitor to connect
Earth signal issues unearthed signal and notifies to MCU control module 8, and MCU control module 8 controls the cutting master of supply access module 6
Ring current, it is ensured that user security；
As shown in fig. 6, the function of plug temperature detecting module and electric current selection and shell damage testing module:
Plug temperature detecting module and electric current selection and shell damage testing module are mounted in plug, plug temperature detecting module
For plug thermistor, electric current selecting module is that electric current selects resistance, and shell damage testing module is shell photo resistance, charging
If temperature abnormality occurred in plug in the process, after MCU control module 8 detects, control supply access module 6 cuts off major loop electricity
Source, it is ensured that plug and socket is not burnt out because temperature is excessively high, selects corresponding charging voltage by replacing different incoming line plugs；
As shown in fig. 7, signal interworking module 5 has signal transfer functions:
When self-test meets charge condition after energization by GB the requirement of T18487.1-2015 believe to the PWM that automobile issues particular requirement
Number or CP signal, automobile receive the amplitude for changing pwm signal or CP signal after signal, and notify MCU control module 8, MCU control
Molding block 8 controls the opening major loop relay of supply access module 6 and starts to charge；
As shown in figure 8, the function of supply access module 6, Emergency Power cutting module:
It is emergency power-off switch that Emergency Power, which cuts off module, and emergency power-off switch is mounted on the shell of charger,
MCU control module 8 controls the relay contact that emergency power-off switch driving connects on zero, firewire and turns on or off, into
And the on-off of power supply is controlled, and the emergency power-off switch is located on relay driving circuit, for cutting off or connecting
Driving triode.
As shown in figure 9, state display module 7 has the function of status display part:
By the display combination that LED is different in charging process, each state is indicated, including power supply is connected, charged normal, overcurrent report
Police, over voltage alarm, ground fault alarm, overtemperature alarm, emergency cut-off.
The present invention is supplied to the different incoming line plug of user, which identifies resistance, different by placing
The corresponding charging current of resistance selection, user match plug according to their own situation, Master control chip inside equipment after energization
(MCU) status display circuit is immediately controlled and shows energized state, it is good whether the signal detection of reception grounding monitor circuit is grounded
Good, the thermosensitive resistance for reading temperature sensing circuit judges whether excess temperature, and the resistance value for then reading electric current selection plug calculates
Corresponding current value out, then the receiving device that corresponding pwm signal (CP) issues automotive interior is calculated, change letter after automobile identification
Number parameter (PWM amplitude) returns to this charger.
The present invention returns to MCU by signal circuit, and control supply access opens major loop relay after MCU identification
It starts to charge, MCU monitors whether always whether overcurrent, excess temperature, over-voltage, electric leakage and ground connection are good during the charging process.
There is abnormal in 100ms out-put supply parameter conduct monitoring at all levels in electric car charger provided by the invention
It cuts off the power immediately incoming relay-protection.Emergency switch directly cuts off main circuit power without being turned off control signal, avoid because
The problem of in emergency circumstances control Signal Fail causes emergency switch to fail carries out charging current (6A- by the selection of plug
Selection 16A) increases the selectivity of user.
Finally, it should be noted that although the present invention and its advantage have been described in detail above it should be appreciated that not
Can be carried out in the case where beyond the spirit and scope of the present invention being defined by the claims appended hereto various changes, substitution and
Transformation.Moreover, the scope of the present invention is not limited only to the specific reality of process, equipment described in specification, means, method and steps
Apply example.One of ordinary skilled in the art holds from the disclosure it will be readily understood that can be used according to the present invention
The row function essentially identical to corresponding embodiment described herein obtains the result essentially identical with it, existing and future
Process, equipment, means, method or step to be developed.Therefore, the attached claims are intended to wrap in the range of them
Include such process, equipment, means, method or step.
Claims (1)
1. a kind of electric car charger, it is characterised in that: the charger includes over-voltage detection module (1), over-current detection mould
Block (2), detection of electrical leakage module (3), ground detection module (4), plug temperature detecting module, electric current selection and shell damage testing
Module, signal interworking module (5), supply access module (6), Emergency Power cutting module, state display module (7), MCU control
Module (8)；
The over-voltage detection module (1) has over-voltage protecting function:
When the external charging voltage of input is more than AC253V, over-voltage detection module (1) issues corresponding signal and controls to the MCU
Module (8), the MCU control module (8) control supply access module (6) the cutting main circuit power immediately, protect automobile
Risk of the internal circuit from impacting with high pressure；
The over-current detection module (2) has overcurrent protection function:
When charging major loop charging current is more than 15A, the MCU control module (8) receives the over-current detection module (2)
Corresponding signal, the MCU control module (8) control the supply access module (6) and cut off main circuit power, protect automotive interior
The risk that circuit is burnt out from high current；
The detection of electrical leakage module (3) has creepage protection function:
Non-loaded regardless of having after powering on, if there is electric leakage is more than 25mA, the detection of electrical leakage module (3) sends a signal to institute
It states MCU control module (8), the MCU control module (8) controls the supply access module (6) and cuts off main circuit power, it is ensured that
The personal safety of user and its close person；
The ground detection module (4) has the function of grounding monitor:
Judge whether the equipment is grounded well by the ground detection module (4), after energization, ground detection module (4) is not
It monitors ground signalling, issues unearthed signal and notify to give the MCU control module (8), MCU control module (8) control
The supply access module (6) cuts off main circuit power, it is ensured that user security；
The function of the plug temperature detecting module and electric current selection and shell damage testing module:
The plug temperature detecting module and electric current selection and shell damage testing module are mounted in plug, the plug
Temperature detecting module is plug thermistor, and the electric current selecting module is that electric current selects resistance, the shell damage testing mould
Block is shell photo resistance, if there is temperature abnormality in plug in charging process, after the MCU control module (8) detects, and control
The supply access module (6) cuts off main circuit power, it is ensured that plug and socket is not burnt out because temperature is excessively high, by replacing not
Same incoming line plug selects corresponding charging voltage；
The signal interworking module (5) has signal transfer functions:
When self-test meets charge condition after energization by GB the requirement of T18487.1-2015 believe to the PWM that automobile issues particular requirement
Number or CP signal, automobile receives the amplitude for changing pwm signal or CP signal after signal, and notifies the MCU control module
(8), the MCU control module (8) controls supply access module (6) the opening major loop relay and starts to charge；
The supply access module (6), Emergency Power cut off the function of module:
It is emergency power-off switch that Emergency Power, which cuts off module, and the emergency power-off switch is mounted on the shell of charger
On, the MCU control module (8) controls the relay contact that the emergency power-off switch driving connects on zero, firewire and beats
On or off is closed, and then controls the on-off of power supply, and the emergency power-off switch is located on relay driving circuit, is used to
Driving triode is connected in cutting；
The state display module (7) has the function of status display part:
By the display combination that LED is different in charging process, each state is indicated, including power supply is connected, charged normal, overcurrent report
Police, over voltage alarm, ground fault alarm, overtemperature alarm, emergency cut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389626.9A CN110040024A (en) | 2019-05-10 | 2019-05-10 | A kind of electric car charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910389626.9A CN110040024A (en) | 2019-05-10 | 2019-05-10 | A kind of electric car charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110040024A true CN110040024A (en) | 2019-07-23 |
Family
ID=67281586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910389626.9A Pending CN110040024A (en) | 2019-05-10 | 2019-05-10 | A kind of electric car charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110040024A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745026A (en) * | 2019-11-04 | 2020-02-04 | 武昌首义学院 | Intelligent charging stake |
| CN111817253A (en) * | 2020-08-07 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Redundant control circuit of main circuit breaker and train |
| CN113400942A (en) * | 2020-02-28 | 2021-09-17 | 株洲中车时代电气股份有限公司 | Controller high-voltage interlocking detection method and device and controller |
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| DE102010045131A1 (en) * | 2010-09-11 | 2012-03-15 | Magna E-Car Systems Gmbh & Co Og | Plug connector for attaching direct current charging socket of charging cable to battery of motor car, has contacts for energy transmission, and serial interface for serial data transmission |
| CN205039589U (en) * | 2015-10-20 | 2016-02-17 | 江苏西比亚新能源科技有限公司 | Electric automobile vehicle -mounted removes charger |
| CN105774575A (en) * | 2016-03-04 | 2016-07-20 | 南京康尼新能源汽车零部件有限公司 | Protection method for safe charging of electric car |
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| CN205846364U (en) * | 2016-06-28 | 2016-12-28 | 广州兴国新能源科技有限公司 | A kind of AC charging rifle of band creepage protection function |
| CN108482152A (en) * | 2018-03-26 | 2018-09-04 | 珠海小可乐科技有限公司 | Portable charger and its controller |
| CN109552092A (en) * | 2019-01-02 | 2019-04-02 | 上海循道新能源科技有限公司 | A kind of control method of split type alternating-current charging pile |
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| DE102010045131A1 (en) * | 2010-09-11 | 2012-03-15 | Magna E-Car Systems Gmbh & Co Og | Plug connector for attaching direct current charging socket of charging cable to battery of motor car, has contacts for energy transmission, and serial interface for serial data transmission |
| CN205039589U (en) * | 2015-10-20 | 2016-02-17 | 江苏西比亚新能源科技有限公司 | Electric automobile vehicle -mounted removes charger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745026A (en) * | 2019-11-04 | 2020-02-04 | 武昌首义学院 | Intelligent charging stake |
| CN110745026B (en) * | 2019-11-04 | 2021-04-02 | 武昌首义学院 | Intelligent charging stake |
| CN113400942A (en) * | 2020-02-28 | 2021-09-17 | 株洲中车时代电气股份有限公司 | Controller high-voltage interlocking detection method and device and controller |
| CN111817253A (en) * | 2020-08-07 | 2020-10-23 | 中车青岛四方机车车辆股份有限公司 | Redundant control circuit of main circuit breaker and train |
| CN111817253B (en) * | 2020-08-07 | 2023-03-10 | 中车青岛四方机车车辆股份有限公司 | Main circuit breaker redundancy control circuit and train |
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