CN108544923A - On-board high-voltage electricity security control apparatus - Google Patents
On-board high-voltage electricity security control apparatus Download PDFInfo
- Publication number
- CN108544923A CN108544923A CN201810181241.9A CN201810181241A CN108544923A CN 108544923 A CN108544923 A CN 108544923A CN 201810181241 A CN201810181241 A CN 201810181241A CN 108544923 A CN108544923 A CN 108544923A
- Authority
- CN
- China
- Prior art keywords
- power battery
- voltage
- voltage electricity
- main control
- control apparatus
- 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
Links
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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of on-board high-voltage electricity security control apparatus, including power battery, equivalent load, main control unit, interface circuit and driving unit；Power battery includes positive electrode and negative electrode for exporting high-voltage electricity；The both ends of equivalent load are separately connected the positive electrode and negative electrode of power battery；Main control unit is connected with power battery, and the status information for acquiring power battery simultaneously exports corresponding control signal according to status information；Interface circuit is connected between main control unit and driving unit, the control signal for receiving main control unit output, and is sent to driving unit after control signal is carried out processing conversion；Driving unit is used for being amplified and exporting by processing and transformed control signal to drive control of high-voltage circuit breaker device to work.On-board high-voltage electricity security control apparatus provided by the invention, can be managed high-voltage electricity, and then ensure vehicle-mounted electrical appliance and human-body safety.
Description
【Technical field】
The present invention relates to electric vehicle engineering field more particularly to a kind of on-board high-voltage electricity security control apparatus.
【Background technology】
As a kind of novel car power source, high-voltage safety is increasingly by it is believed that be the general character of electric vehicle
Problem.And an important feature of electric vehicle is exactly the interior high voltage circuit equipped with the enough power performance of guarantee, is up to
The voltage of 300V or more may jeopardize the safe to use of personal safety and on-board high-voltage electrical appliance.So opposite orthodox car comes
It says, electric vehicle proposes new higher requirement to its security performance and its protection, is also a problem to be solved.
In consideration of it, it is really necessary to provide a kind of on-board high-voltage electricity security control apparatus to overcome drawbacks described above.
【Invention content】
The object of the present invention is to provide a kind of on-board high-voltage electricity security control apparatus, can be managed to high-voltage electricity, into
And ensure vehicle-mounted electrical appliance and human-body safety.
To achieve the goals above, a kind of on-board high-voltage electricity security control apparatus of present invention offer, including power battery, etc.
Imitate load, main control unit, interface circuit and driving unit；The power battery for exporting high-voltage electricity, and include anode with
Cathode；The both ends of the equivalent load are separately connected the positive electrode and negative electrode of the power battery；The main control unit is moved with described
Power battery is connected, and the status information for acquiring the power battery simultaneously exports corresponding control letter according to the status information
Number；The interface circuit is connected between the main control unit and the driving unit, for receiving the main control unit output
Control signal, and be sent to the driving unit after the control signal is carried out processing conversion；The driving unit is used for
To being amplified and exporting by processing and transformed control signal to drive control of high-voltage circuit breaker device to work.
On-board high-voltage electricity security control apparatus provided by the present invention, the main control unit is by acquiring the power battery
Status information and export corresponding control signal according to the status information, and then drive the work of control of high-voltage circuit breaker device.
The management to high-voltage electricity is realized, when the status information exception of power battery, control of high-voltage circuit breaker device can be driven to control
Corresponding high-voltage circuitbreaker disconnects, to ensure on-board high-voltage electrical appliance and personal safety.
【Description of the drawings】
Fig. 1 is the functional block diagram for the on-board high-voltage electricity security control apparatus that the embodiment of the present invention provides.
【Specific implementation mode】
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, ordinary skill personage are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
When an element was considered with another element " being connected ", it can be directly to another element or
It may be simultaneously present centering elements.Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to this hair
The normally understood meaning of skilled worker of bright technical field is identical.Term used in the description of the invention herein
It is only for the purpose of describing specific embodiments and is not intended to limit the present invention.Term " and or " used herein packet
Include any and all combinations of one or more relevant Listed Items.
Referring to Fig. 1, Fig. 1 is the original of the on-board high-voltage electricity security control apparatus 100 provided in one embodiment of the invention
Manage block diagram.The on-board high-voltage electricity security control apparatus 100 includes power battery 10, equivalent load 20, main control unit 30, interface
Circuit 40 and driving unit 50.On-board high-voltage electricity security control apparatus 100 is connected with control of high-voltage circuit breaker device 200, is used for
Status information according to power battery 10 sends control signal and is broken with driving control of high-voltage circuit breaker device 200 to control corresponding height
Road device disconnects.It is appreciated that control of high-voltage circuit breaker device 200 is connected with multiple high-voltage circuitbreakers to control multiple high-voltage circuitbreakers
Break-make, and then realize that power battery 10 provides the purpose of high-voltage electricity for different components.
The power battery 10 provides power for exporting high-voltage electricity for the traveling of electric vehicle.The power electric
Pond 10 includes positive electrode and negative electrode.
The both ends of the equivalent load 20 are connected to the positive electrode and negative electrode of the power battery 10.Wherein, described etc.
Effect load 20 includes equivalent resistance RL and equivalent capacity CL.The both ends of equivalent resistance RL are positive and negative with power battery 10 respectively
Extremely it is connected, and the both ends of equivalent capacity CL are connected with the anode and cathode of power battery 10 respectively, also that is, equivalent resistance RL and waiting
Effect capacitance CL is parallel to the both ends of power battery 10.It is appreciated that equivalent load 20 can be motor or electric machine controller etc..
The main control unit 30 is connected with the power battery 10, the status information for acquiring the power battery and according to
Corresponding control signal is exported according to the status information.The status information includes the voltage, electric current and insulation of power battery 10
State.
The interface circuit 40 is connected between the main control unit 30 and the driving unit 50, for receiving the master
The control signal that unit 30 exports is controlled, and the driving unit 50 is sent to after the control signal is carried out processing conversion.
The driving unit 50 is also connected with control of high-voltage circuit breaker device 200, for by processing and transformed control
Signal processed is amplified and is exported to the control of high-voltage circuit breaker device 200 to drive 200 work of control of high-voltage circuit breaker device
Make.Specifically, the control of high-voltage circuit breaker device 200 is connected with multiple high-voltage circuitbreakers, wherein each high-voltage circuitbreaker is used for
Control the break-make of the high-tension circuit where it.When the status information exception of power battery 10, control of high-voltage circuit breaker device 200 is controlled
Corresponding high-voltage circuitbreaker is made to disconnect to stop exporting high-voltage electricity；When the status information of power battery 10 is normal, high pressure open circuit
Device controller 200 controls corresponding high-voltage circuitbreaker and is closed normally to export high-voltage electricity.
The on-board high-voltage electricity security control apparatus 100 of offer of the present invention, the main control unit 30 is by described in acquisition
The status information of power battery 10 simultaneously exports corresponding control signal according to the status information, and then drives high-voltage circuitbreaker control
Device 200 processed works.The management to high-voltage electricity is realized, when the status information exception of power battery 10, height can be driven to break
Road device controller 200 controls corresponding high-voltage circuitbreaker and disconnects, to ensure on-board high-voltage electrical appliance and personal safety.
Further, the on-board high-voltage electricity security control apparatus 100 further includes communication interface circuit 60, and the communication connects
One end of mouth circuit 60 is connected with the main control unit 30 and the other end is connected with entire car controller 300, so that described vehicle-mounted
High-voltage safety managing device 100 can be communicated with the entire car controller 300, to analyze vehicle high-pressure system and
High-voltage circuitbreaker various states response process and executive condition, preferably to implement high-voltage safety control strategy.
In one preferred embodiment, the communication interface circuit 60 passes through filter circuit 70 and the full-vehicle control
Device 300 is connected.The noise in signal of communication is filtered out to improve the reliability of communication by the filter circuit 60.
In one embodiment, the on-board high-voltage electricity security control apparatus 100 further includes the first high voltage connector K1
With the second high voltage connector K2.The first end of the first high voltage connector K1 connects the cathode of the power battery 10, and
The second end of one high voltage connector K1 connects one end of the equivalent load 20.The first end of the second high voltage connector K2 connects
The anode of the power battery 10 is connect, and the second end of the second high voltage connector K2 connects the other end of the equivalent load 20.
The main control unit 30 is connected by sample circuit 31 with the power battery 10, to acquire the defeated of power battery 10
Go out voltage.Further, the anode that the first terminal of the sample circuit 31 passes through first resistor R1 and the power battery 10
It is connected, and the Second terminal for stating sample circuit 31 is connected by second resistance R2 with the cathode of the power battery 10.In this reality
It applies in mode, the first resistor R1 and second resistance R2 are current-limiting resistance.
Further, the main control unit 30 also by insulation detecting circuit 32 with respectively with first high voltage connector
K1 and second one end of high voltage connector K2 far from the power battery 10 are connected, to detect the insulation shape of the power battery 10
State.Specifically, the first terminal of the insulation detecting circuit 32 passes through the 3rd resistor R3 and second high voltage connector
The one end of K2 far from the power battery 10 is connected, and the Second terminal of the insulation detecting circuit 32 passes through the 4th resistance R4
It is connected with the described one end of first high voltage connector K1 far from the power battery 10.Wherein, the 3rd resistor R3 and the 4th
Resistance R4 is current-limiting resistance.
In one embodiment, the main control unit 30 also passes through the first Hall current sensor A1 and the second Hall electricity
Flow sensor A2 acquires 10 negative electrode bus of power battery and the electric current in positive electrode bus respectively, and is sensed by the first Hall current
Device A1 and the current signal of the second Hall current sensor A2 outputs input the main control unit after the amplification of amplifying unit 33
30, and then improve precision of the main control unit 30 to current acquisition.
Further, on-board high-voltage electricity security control apparatus 100 further includes third contactor K3 and preliminary filling resistance R5.It is described
One end of third high voltage connector is connected with the anode of power battery 10, and the other end is high by preliminary filling resistance R5 and described first
The one end of tentaculum K1 far from 10 cathode of the power battery is crimped to be connected.In the present embodiment, the preliminary filling resistance R5 can be with
Before safety connects high-pressure system, the correct outlet line that perceives whether there is the load excessive possibly even failures such as short circuit.In addition,
High-voltage output end is pre-charged, can also have sufficient time to detect in real time in pre-charge process mesohigh circuit voltage and when
Between variation relation, and the state of outlet line is judged accordingly, to determine that the control operation of next step is fully switched on or prohibits
Only connect.
In addition, the main control unit 30 also acquires other signal messages, and other comprehensive letters by voltage conversion unit 34
The corresponding control signal of number information output.In the present embodiment, other signal messages include line traffic control signal, interlocking signal, hand
Dynamic signal and acceleration signals.Wherein, line traffic control signal and manual ringing come from entire car controller, and interlocking signal comes from high pressure system
System, acceleration signals come from acceleration sensor, and corresponding control signal can be more accurately exported by the acquisition to various types of signal,
Further increase the control accuracy of high pressure broken-circuit controller.
The present invention is not only in the description and the implementation described, therefore for the personnel of familiar field
Other advantage and modification is easily implemented, therefore in the essence without departing substantially from universal defined by claim and equivalency range
In the case of refreshing and range, the present invention is not limited to specific details, representative equipment and diagrams shown and described herein
Example.
Claims (10)
1. a kind of on-board high-voltage electricity security control apparatus, it is characterised in that：Including power battery, equivalent load, main control unit, connect
Mouth circuit and driving unit；The power battery includes positive electrode and negative electrode for exporting high-voltage electricity；The equivalent load
Both ends are separately connected the positive electrode and negative electrode of the power battery；The main control unit is connected with the power battery, for acquiring
The status information of the power battery simultaneously exports corresponding control signal according to the status information；The interface circuit is connected to
Between the main control unit and the driving unit, the control signal for receiving main control unit output, and by the control
Signal processed is sent to the driving unit after carrying out processing conversion；The driving unit is used for by processing and transformed control
Signal processed is amplified and is exported to drive control of high-voltage circuit breaker device to work.
2. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The equivalent load includes equivalent
Resistance and equivalent capacity；The both ends of the equivalent resistance are connected with the anode and cathode of the power battery respectively, and described etc.
The both ends for imitating capacitance are connected with the anode and cathode of the power battery respectively.
3. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The status information includes power
Voltage, electric current and the state of insulation of battery.
4. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The on-board high-voltage electricity bursting tube
Manage device further include communication interface circuit, one end of the communication interface circuit be connected with the main control unit and the other end with it is whole
Vehicle controller is connected.
5. on-board high-voltage electricity security control apparatus as claimed in claim 4, it is characterised in that：The communication interface circuit passes through
Filter circuit is connected with the entire car controller.
6. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The on-board high-voltage electricity bursting tube
It further includes the first high voltage connector and the second high voltage connector to manage device；Described in the first end connection of first high voltage connector
The cathode of power battery, and the second end of first high voltage connector connects one end of the equivalent load；Described second is high
The first end of crimping tentaculum connects the anode of the power battery, and the second end connection of second high voltage connector is described etc.
Imitate the other end of load.
7. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The main control unit passes through sampling
Circuit is connected with the power battery to acquire the output voltage of the power battery.
8. on-board high-voltage electricity security control apparatus as claimed in claim 6, it is characterised in that：The main control unit passes through insulation
Detection circuit with one end far from the power battery is connected with first high voltage connector and the second high voltage connector respectively
To detect the state of insulation of the power battery.
9. on-board high-voltage electricity security control apparatus as described in claim 1, it is characterised in that：The main control unit passes through first
Hall current sensor and the second Hall current sensor are acquired respectively in the power battery cathode busbar and positive electrode bus
Electric current, and the current signal exported by first Hall current sensor and second Hall current sensor is by putting
The main control unit is inputted after big unit amplification.
10. on-board high-voltage electricity security control apparatus as claimed in claim 6, it is characterised in that：The on-board high-voltage electricity safety
Managing device further includes third high voltage connector and preliminary filling resistance；One end of the third high voltage connector and the power battery
Anode be connected, and the other end connects first high voltage connector far from the power battery cathode by the preliminary filling resistance
One end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181241.9A CN108544923A (en) | 2018-03-06 | 2018-03-06 | On-board high-voltage electricity security control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810181241.9A CN108544923A (en) | 2018-03-06 | 2018-03-06 | On-board high-voltage electricity security control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108544923A true CN108544923A (en) | 2018-09-18 |
Family
ID=63516545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810181241.9A Pending CN108544923A (en) | 2018-03-06 | 2018-03-06 | On-board high-voltage electricity security control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108544923A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398836A (en) * | 2020-04-26 | 2020-07-10 | 东风汽车集团有限公司 | Integrated power battery high-voltage detection system and insulation verification method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412425A (en) * | 2011-09-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Method and device for managing battery |
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
| CN103434408A (en) * | 2013-08-07 | 2013-12-11 | 扬州亚星客车股份有限公司 | High-voltage safety control system of electric vehicle |
| KR20140042597A (en) * | 2012-09-28 | 2014-04-07 | 엘에스산전 주식회사 | Apparatus and method for discharging voltage of vehicle |
| CN104052088A (en) * | 2013-03-14 | 2014-09-17 | 比亚迪股份有限公司 | Wireless charging system for electric automobile |
| CN203902307U (en) * | 2014-05-23 | 2014-10-29 | 北汽福田汽车股份有限公司 | Electromobile high-voltage-insulating safety protection system and electromobile with same |
| US20150021984A1 (en) * | 2013-07-16 | 2015-01-22 | Hyundai Motor Company | System and method for controlling energy under interlock of eco-friendly vehicle |
| CN105406559A (en) * | 2015-12-30 | 2016-03-16 | 深圳天邦达科技有限公司 | Battery management system for low-speed electric vehicle |
| CN105774558A (en) * | 2016-03-17 | 2016-07-20 | 北京航空航天大学 | Integrated safety detection device for electric automobile |
| CN105980196A (en) * | 2014-02-08 | 2016-09-28 | 埃伦贝格尔及珀恩斯根有限公司 | High-voltage motor vehicle electric system |
| CN106985672A (en) * | 2017-04-18 | 2017-07-28 | 浙江农林大学 | A kind of batteries of electric automobile bag power-off system |
-
2018
- 2018-03-06 CN CN201810181241.9A patent/CN108544923A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001265A (en) * | 2011-09-08 | 2013-03-27 | 北汽福田汽车股份有限公司 | High-voltage output electrical box for power battery |
| CN102412425A (en) * | 2011-09-23 | 2012-04-11 | 奇瑞汽车股份有限公司 | Method and device for managing battery |
| KR20140042597A (en) * | 2012-09-28 | 2014-04-07 | 엘에스산전 주식회사 | Apparatus and method for discharging voltage of vehicle |
| CN104052088A (en) * | 2013-03-14 | 2014-09-17 | 比亚迪股份有限公司 | Wireless charging system for electric automobile |
| US20150021984A1 (en) * | 2013-07-16 | 2015-01-22 | Hyundai Motor Company | System and method for controlling energy under interlock of eco-friendly vehicle |
| CN103434408A (en) * | 2013-08-07 | 2013-12-11 | 扬州亚星客车股份有限公司 | High-voltage safety control system of electric vehicle |
| CN105980196A (en) * | 2014-02-08 | 2016-09-28 | 埃伦贝格尔及珀恩斯根有限公司 | High-voltage motor vehicle electric system |
| CN203902307U (en) * | 2014-05-23 | 2014-10-29 | 北汽福田汽车股份有限公司 | Electromobile high-voltage-insulating safety protection system and electromobile with same |
| CN105406559A (en) * | 2015-12-30 | 2016-03-16 | 深圳天邦达科技有限公司 | Battery management system for low-speed electric vehicle |
| CN105774558A (en) * | 2016-03-17 | 2016-07-20 | 北京航空航天大学 | Integrated safety detection device for electric automobile |
| CN106985672A (en) * | 2017-04-18 | 2017-07-28 | 浙江农林大学 | A kind of batteries of electric automobile bag power-off system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398836A (en) * | 2020-04-26 | 2020-07-10 | 东风汽车集团有限公司 | Integrated power battery high-voltage detection system and insulation verification method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104641244B (en) | For detecting and measuring the device of insulation fault | |
| EP3111541B1 (en) | Pre-charging switch arrangement, power supplying arrangement and method for connecting a load to a high direct-current voltage source | |
| CN203894326U (en) | Insulation resistance measuring circuit and high voltage insulation monitoring system of electric vehicle | |
| CN204367903U (en) | A kind of electrokinetic cell bag | |
| CN105375540B (en) | National standard and American Standard conversion Vehicular charging gateway controller and its charging conversion method | |
| CN103001265A (en) | High-voltage output electrical box for power battery | |
| CN104793135B (en) | A kind of hybrid vehicle relay status detection circuit and method | |
| CN103001279A (en) | Vehicle battery charging apparatus | |
| CN106842005B (en) | Relay fault judgment method for high-voltage system of electric automobile | |
| CN207875401U (en) | High-voltage interlocking detecting system | |
| CN110488167A (en) | A kind of pure electric automobile Insulation Inspection System and method with contactor adhesion judgement | |
| CN107284247A (en) | A kind of electric automobile and high voltage distribution box | |
| CN106788220A (en) | A kind of photovoltaic group string binding post | |
| CN107914582A (en) | The upper and lower electric security system of electric automobile and its control method | |
| KR101708984B1 (en) | Method for determining the absence of voltage in an electrical high-voltage system, and electrical high-voltage system | |
| CN208698521U (en) | A kind of charge and discharge device of vehicle-to-vehicle charging | |
| CN105034841A (en) | Strong electricity charging and discharging control method of hybrid electric vehicle and apparatus thereof | |
| CN105243745A (en) | New energy vehicle intelligent charging pile | |
| CN110816363B (en) | Device, charging pile and method for detecting the state of a motor vehicle battery | |
| CN205353247U (en) | Alternating -current charging interface circuit simulator | |
| CN205050256U (en) | New energy automobile intelligent charging stake | |
| CN108544923A (en) | On-board high-voltage electricity security control apparatus | |
| CN211684756U (en) | High-voltage power distribution system of electric vehicle and electric vehicle | |
| CN109968980A (en) | A kind of high-voltage interlocking detection system | |
| CN106300229B (en) | It is a kind of for protecting the device and method of high-tension battery electricity system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180918 |