CN108528240A - Electric energy conversion system and electric automobile - Google Patents
Electric energy conversion system and electric automobile Download PDFInfo
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- CN108528240A CN108528240A CN201810240343.3A CN201810240343A CN108528240A CN 108528240 A CN108528240 A CN 108528240A CN 201810240343 A CN201810240343 A CN 201810240343A CN 108528240 A CN108528240 A CN 108528240A
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- Prior art keywords
- high pressure
- energy conversion
- ground wire
- electric energy
- conversion system
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 8
- 230000005611 electricity Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- 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
-
- 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
- B60L53/20—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 converters located in the vehicle
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides an electric energy conversion system and an electric automobile, relates to the technical field of motors, and solves the problem that a signal ground wire and even electronic parts are burnt when a DC/DC output loop passes through a low-voltage signal ground wire in the prior art. The electric energy conversion system comprises a DC/DC and a storage battery, wherein the anode of the DC/DC is connected with the anode of the storage battery, the cathode of the DC/DC is connected with a grounding of an automobile body, the cathode of the storage battery is connected with the grounding, the cathode of the DC/DC and a high-voltage integrated main control board are connected through a standby ground wire, the high-voltage integrated main control board and a low-voltage plug connector are connected through a low-voltage plug connector and the cathode of the storage battery, and the cross section area of the standby ground wire is larger than that of a signal ground wire. When the DC/DC negative electrode is in fault with the grounding connection, a current loop can be formed between the DC/DC and the storage battery through the standby ground wire, so that the signal ground wire and even electronic parts are prevented from being burnt, and the high-voltage system is prevented from being in fault.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of electric energy conversion system and electric vehicle.
Background technology
High pressure is converted to low pressure, is by the vehicle-mounted DC-DC power supply DC/DC of electric vehicle from high voltage power battery electricity-taking
Low tension battery charges, and ensures that low tension battery has sufficient electricity to power for vehicle low-voltage electrical apparatus, is to realize high voltage power electricity
The key link that the energy of pond to low tension battery is converted.
As shown in Figure 1a, in practical applications, DC/DC is more integrated into high pressure integrated system, DC/DC outputs
Anode is directly connected to external beam by high pressure integrated system with the anode of low tension battery；And cathode is then connected by bonding
It is connected to the shell of high pressure integrated system, is connected with low tension battery cathode by the shell of high pressure integrated system and the bonding of vehicle body
It connects, at this time in DC/DC current directions such as Fig. 1 a shown in arrow.During the production of high pressure integrated system and use, if DC/
DC cathode connect failure (as installation loosens or poor contact) with the bonding of high pressure integrated system shell, then DC/DC
Can not just form current loop by this approach between accumulator, high current can by the signal ground of low pressure plug connector,
In high pressure integrated system OBC (On board charger, onboard charger) or MCU (Microcontroller Unit, it is micro-
Control unit) etc. other electronic components signal ground forming circuit, as shown in arrow in Fig. 1 b, at this time DC/DC output electricity
Stream peak value can be more than 100A, the peak point current that significantly larger than low-voltage signal ground wire can be born, very so as to cause low-voltage signal ground wire
To burning for other electronic components, lead to high-pressure system failure, influences vehicle driving.
Invention content
The technical problem to be solved in the present invention is to provide a kind of electric energy conversion system and electric vehicles, solve in the prior art
When DC/DC output loops pass through low-voltage signal ground wire, burning for low-voltage signal ground wire even other electronic components can be caused, led
The problem of causing high-pressure system failure, influencing vehicle driving.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of electric energy conversion system, including DC to DC
Power supply DC/DC and accumulator, the anode of the DC/DC are connect with the anode of the accumulator, the cathode and automobile of the DC/DC
The bonding of vehicle body connects, and the cathode of the accumulator is connect with the bonding, and cathode and the high pressure of the DC/DC integrate master control borad
Between, the high pressure it is integrated between master control borad and low pressure plug connector between the low pressure plug connector and the cathode of the accumulator
It is connected by spare ground wire, the cross-sectional area of the spare ground wire is more than the cross-sectional area of signal ground.
Optionally, further include：
The current sampler being set on the integrated master control borad of the high pressure, the current sampler are described spare for acquiring
Electric current on ground wire；
When the electric current of current sampler acquisition is higher than predetermined threshold value, the high pressure integrates described in master control borad control
DC/DC is stopped.
Optionally, the high pressure integrates master control borad and is also connect with entire car controller, when the electricity of current sampler acquisition
When stream is higher than predetermined threshold value, the high pressure integrates master control borad and sends fault message to the entire car controller.
Optionally, it is set to the spare ground wire that the high pressure integrates on master control borad and uses deposited copper wire.
Optionally, other spare ground wires in addition to the spare ground wire being set on the integrated master control borad of the high pressure are using more
Root signal ground is in parallel.
Optionally, the bonding is connect with the shell of high pressure integrated system；
The first circuit of shell composition of the DC/DC, the accumulator, the bonding and the high pressure integrated system；
The DC/DC, the accumulator, the low pressure plug connector and the high pressure integrate master control borad and constitute second servo loop.
Optionally, the product of the impedance factor in the impedance loop in first circuit and first circuit is less than described the
The impedance loop of secondary circuit.
Optionally, the cathode of the DC/DC passes sequentially through in high pressure integrated system the signal ground of electronic component and low
The signal ground of pressure plug connector is connect with the cathode of the accumulator；
The DC/DC, the accumulator, the low pressure plug connector and the electronic component constitute tertiary circuit.
Optionally, the product of the impedance factor of the impedance loop of the tertiary circuit and the tertiary circuit is more than described the
The impedance loop of secondary circuit.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of electric vehicle, including：As above any one institute
The electric energy conversion system stated.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
The electric energy conversion system of the embodiment of the present invention, including DC/DC and accumulator, the anode and accumulator of DC/DC are just
Pole connects, and the cathode of DC/DC and the bonding of body of a motor car connect, and the cathode of accumulator is connect with bonding, cathode and the height of DC/DC
It presses between integrating master control borad, high pressure integrates between master control borad and low pressure plug connector between low pressure plug connector and the cathode of accumulator
It is connected by spare ground wire, the cross-sectional area of spare ground wire is more than the cross-sectional area of signal ground.At this point, DC/DC, storage
Battery, low pressure plug connector and high pressure integrate master control borad and constitute back-up circuit by spare ground wire, if DC/DC cathode and high pressure collection
It connects and breaks down at the bonding of system casing, current loop can be formed by back-up circuit between DC/DC and accumulator.By
It is thicker in spare ground wire, therefore high current will not cause to burn by back-up circuit in short-term, avoid DC/DC output loops process
Cause burning for low-voltage signal ground wire even other electronic components when low-voltage signal ground wire, avoid high-pressure system failure, protects
It has demonstrate,proved vehicle normally to drive a vehicle, has improved safety.
Description of the drawings
Fig. 1 a are the schematic diagram of existing DC/DC output loops；
Fig. 1 b are another schematic diagram of existing DC/DC output loops；
Fig. 2 is the structural schematic diagram of the electric energy conversion system of the embodiment of the present invention；
Fig. 3 is that the electric energy conversion system mesohigh of the embodiment of the present invention integrates the flow chart of master control borad fault detection process.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
With reference to shown in Fig. 2, the electric energy conversion system of the embodiment of the present invention, including DC-DC power supply DC/DC and electric power storage
Pond, the anode of the DC/DC are connect with the anode of the accumulator, and the cathode of the DC/DC and the bonding of body of a motor car connect,
The cathode of the accumulator is connect with the bonding, and the cathode and high pressure of the DC/DC integrate between master control borad, the high pressure collection
At passing through spare ground wire between the low pressure plug connector and the cathode of the accumulator between master control borad and low pressure plug connector
Connection, the cross-sectional area of the spare ground wire are more than the cross-sectional area of signal ground.
The electric energy conversion system of the embodiment of the present invention, increases design standby in low-voltage signal system, DC/DC,
Accumulator, low pressure plug connector and high pressure integrate master control borad and constitute back-up circuit by spare ground wire, if DC/DC cathode and height
The bonding connection of integrated system shell is pressed to break down, can form electric current by back-up circuit between DC/DC and accumulator returns
Road.Since spare ground wire is thicker, high current will not cause to burn by back-up circuit in short-term, avoid DC/DC and export back
Road causes burning for low-voltage signal ground wire even other electronic components when passing through low-voltage signal ground wire, avoid high-pressure system event
Barrier, ensure that vehicle is normally driven a vehicle, improves safety.
Optionally, the electric energy conversion system of the embodiment of the present invention further includes：
The current sampler being set on the integrated master control borad of the high pressure, the current sampler are described spare for acquiring
Electric current on ground wire；When the electric current of current sampler acquisition is higher than predetermined threshold value, the high pressure integrates master control borad control
The DC/DC is stopped.
At this point, after the connection of DC/DC output loops goes wrong, high current can be returned by what spare ground wire was constituted in short-term
Road is burnt without causing, while the current sampler that high pressure integrates on master control borad can acquire the electric current on spare ground wire, when
When electric current is higher than predetermined threshold value, high pressure integrates master control borad and can determine whether out that DC/DC cathode connect failure with bonding, stops DC/
DC works, to avoid causing more serious consequence.
Wherein, predetermined threshold value can be set according to demand, and arbitrary rational value may be used in predetermined threshold value.
Optionally, the high pressure integrates master control borad and is also connect with entire car controller, when the electricity of current sampler acquisition
When stream is higher than predetermined threshold value, the high pressure integrates master control borad and sends fault message to the entire car controller.
At this point, the current sampler that high pressure integrates on master control borad can acquire the electric current on spare ground wire, when electric current is higher than
When predetermined threshold value, high pressure integrates master control borad and can determine whether out that the connection of DC/DC cathode is broken down, and stops DC/DC work, and to vehicle
Controller sends the fault message of DC/DC earth faults, can avoid the occurrence of signal wire and other electronic equipments burn it is serious
Accident, and user is made to know fault message in time to repair, ensure normal driving.
Wherein, high pressure, which integrates master control borad, to pass through CAN (Controller Area Network, controller local area network)
It is connect with entire car controller.
The flow that high pressure integrates master control borad fault detection process can refer to shown in Fig. 3, and high pressure integrates master control borad fault detection
The step of processing includes：S31：High pressure integrated touch panel obtains current sampler and acquires the electric current on spare ground wire；S32：High pressure
Integrated touch panel is filtered the electric current on spare ground wire；S33：High pressure integrated touch panel judges the electricity after being filtered
Whether stream is higher than predetermined threshold value；S34：If so, sending silence signal to DC/DC, forbid DC/DC driving outputs, and lead to
Cross the fault message of CAN notice entire car controller DC/DC earth faults；If it is not, then terminating.At this time when electric current is higher than predetermined threshold value
When, high pressure integrates master control borad and can determine whether out that DC/DC cathode connects failure with bonding, and stopping DC/DC working, and to vehicle control
Device processed sends the fault message of DC/DC earth faults, can avoid the occurrence of the serious thing that signal wire and other electronic equipments are burnt
Therefore and so that user is known fault message in time to repair, ensure normal driving.
Wherein, the above-mentioned fault detect process flow of the integrated master control borad of high pressure can integrate the list on master control borad by high pressure
Piece machine is realized.
Optionally, it is set to the spare ground wire that the high pressure integrates on master control borad and uses deposited copper wire.
At this point, integrating the spare ground wire on master control borad in high pressure can be used thicker deposited copper wire realization.
Optionally, other spare ground wires in addition to the spare ground wire being set on the integrated master control borad of the high pressure are using more
Root signal ground is in parallel.
At this point, other spare ground wires in addition to the spare ground wire being set on the integrated master control borad of high pressure, are such as inserted in low pressure
Spare ground wire on fitting can be used more signal ground parallel connections and realize.
Optionally, the bonding is connect with the shell of high pressure integrated system；The DC/DC, the accumulator, the bonding
The first circuit is constituted with the shell of the high pressure integrated system；The DC/DC, the accumulator, the low pressure plug connector and institute
It states high pressure and integrates master control borad composition second servo loop.
At this point, DC/DC, accumulator, bonding and high pressure integrated system shell constitute the first circuit, DC/DC cathode with
Bonding connection by the first circuit between DC/DC and accumulator without that when something goes wrong, can form current loop, DC/DC is normal
Work；DC/DC, accumulator, low pressure plug connector and high pressure integrate master control borad and constitute second servo loop by spare ground wire, if DC/
DC cathode connect failure with bonding, current loop can be formed by second servo loop between DC/DC and accumulator, due to spare
Ground wire is thicker, therefore high current will not cause to burn by back-up circuit in short-term, avoids DC/DC output loops and believes by low pressure
Cause burning for low-voltage signal ground wire even other electronic components when number ground wire.
Optionally, the product of the impedance loop R_nomal in first circuit and the impedance factor K1 in first circuit
Less than the impedance loop R_backup of the second servo loop.
At this point, K1*R_nomal ＜ R_backup, the circuit resistance for the back-up circuit (i.e. second servo loop) that spare ground wire is constituted
Anti- R_backup is higher than the impedance loop R_nomal in bonding circuit (i.e. the first circuit), and being connect with bonding in DC/DC cathode does not have
When something goes wrong, electric current preferentially selects low-impedance path to form closed loop, i.e., preferentially selection bonding circuit forms closed loop, ensure that
DC/DC normal drivings export.
Optionally, the cathode of the DC/DC passes sequentially through in high pressure integrated system the signal ground of electronic component and low
The signal ground of pressure plug connector is connect with the cathode of the accumulator；The DC/DC, the accumulator, the low pressure plug connector
Tertiary circuit is constituted with the electronic component.
The product of the impedance loop R_signal of the tertiary circuit and impedance factor K2 of the tertiary circuit is more than institute
State the impedance loop R_backup of second servo loop.
At this point, DC/DC, accumulator, low pressure plug connector and electronic component constitute tertiary circuit by signal ground.K1*
R_nomal ＜ R_backup ＜ K2*R_signal, the impedance loop R_ for the back-up circuit (i.e. second servo loop) that spare ground wire is constituted
Backup is higher than the impedance loop R_nomal in bonding circuit (i.e. the first circuit), but is returned less than other any bars ground wires
The impedance loop R_signal on road (i.e. tertiary circuit), after DC/DC cathode connect failure with bonding, electric current preferentially selects
Low-impedance path forms closed loop, i.e., preferential selection signal earth loop forms closed loop, avoids DC/DC output loops and passes through low pressure
Cause burning for low-voltage signal ground wire even other electronic components when signal ground.
Wherein, K1 and K2 can be determined by experimental test, K1 and the desirable arbitrary rational values of K2.
The electric energy conversion system of the embodiment of the present invention increases design standby in low-voltage signal system, works as DC/DC
After output negative pole connect failure with bonding, electric current preferentially selects low-impedance path to form closed loop, flows through spare earth-return.This
When high current will not cause to burn by spare earth-return in short-term, and the electric current in spare earth-return is significantly higher than normally at this time
Value, high pressure integrated system master control sheet processor can determine whether out that DC/DC output negative poles connect failure with bonding, stop DC/DC
Work, and send fault message to entire car controller.The electric energy conversion system, which avoids, there is signal wire and other electronic apparatus
The major accident of equipment burnout avoids high-pressure system failure, ensure that vehicle is normally driven a vehicle, and allows users to know in time
Fault message improves safety to repair.
It there is no ripe DC/DC output loop connecting detection schemes in the prior art, given birth to mostly by high pressure integrated system
Production. art detects the control of inspection to avoid this problem, but can not be inherently eliminated potential risk, subsequently long-term in vehicle
Application, be then more difficult to ensure in maintenance process.It is negative to devise DC/DC outputs for the electric energy conversion system of the embodiment of the present invention
Pole connecting fault detection scheme fundamentally can accurately and comprehensively detect DC/DC output negative poles bad connection and disconnect event
Barrier.
Since the electric energy conversion system of the embodiment of the present invention is applied to electric vehicle, the embodiment of the present invention also provides
A kind of electric vehicle, including：Electric energy conversion system as described in above-described embodiment.Wherein, above-mentioned electric energy conversion system
The realization embodiment can also reach identical technique effect suitable for the embodiment of the electric vehicle.
In various embodiments of the present invention, it should be appreciated that size of the sequence numbers of the above procedures is not meant to execute suitable
The execution sequence of the priority of sequence, each process should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Process constitutes any restriction.
In the embodiment of the present invention, module can use software realization, to be executed by various types of processors.Citing comes
It says, the executable code module of a mark may include the one or more physics or logical block of computer instruction, citing
For, object, process or function can be built as.Nevertheless, the executable code of institute's mark module is without physically
It is located together, but may include the different instructions being stored in different positions, be combined together when in these command logics
When, it constitutes module and realizes the regulation purpose of the module.
In fact, executable code module can be the either many item instructions of individual instructions, and can even be distributed
It on multiple and different code segments, is distributed in distinct program, and is distributed across multiple memory devices.Similarly, it grasps
Making data can be identified in module, and can be realized according to any form appropriate and be organized in any appropriate class
In the data structure of type.The operation data can be collected as individual data collection, or can be distributed on different location
(including in different storage device), and can only be present in system or network as electronic signal at least partly.
When module can utilize software realization, it is contemplated that the level of existing hardware technique, it is possible to implemented in software
Module, in the case where not considering cost, those skilled in the art can build corresponding hardware circuit to realize correspondence
Function, the hardware circuit includes conventional ultra-large integrated (VLSI) circuit or gate array and such as logic core
The existing semiconductor of piece, transistor etc either other discrete elements.Module can also use programmable hardware device, such as
The realizations such as field programmable gate array, programmable logic array, programmable logic device.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of electric energy conversion system, including DC-DC power supply DC/DC and accumulator, the anode of the DC/DC with it is described
The anode connection of accumulator, the cathode of the DC/DC and the bonding of body of a motor car connect, and the cathode of the accumulator is taken with described
Iron connects, which is characterized in that
The cathode and high pressure of the DC/DC integrate between master control borad, the high pressure it is integrated between master control borad and low pressure plug connector and
It is connected by spare ground wire between the low pressure plug connector and the cathode of the accumulator, the cross section face of the spare ground wire
Cross-sectional area of the product more than signal ground.
2. electric energy conversion system according to claim 1, which is characterized in that further include：
The current sampler being set on the integrated master control borad of the high pressure, the current sampler is for acquiring the spare ground wire
On electric current；
When the electric current of current sampler acquisition is higher than predetermined threshold value, the high pressure integrates master control borad and controls the DC/DC
It is stopped.
3. electric energy conversion system according to claim 2, which is characterized in that the high pressure integrate master control borad also with vehicle control
Device processed connection, when the electric current of current sampler acquisition is higher than predetermined threshold value, the high pressure integrates master control borad to described whole
Vehicle controller sends fault message.
4. electric energy conversion system according to claim 1, which is characterized in that be set to the high pressure and integrate on master control borad
Spare ground wire is using deposited copper wire.
5. electric energy conversion system according to claim 1, which is characterized in that integrated on master control borad except the high pressure is set to
Spare ground wire other than other spare ground wires use more signal ground parallel connections.
6. electric energy conversion system according to claim 1, which is characterized in that the shell of the bonding and high pressure integrated system
Connection；
The first circuit of shell composition of the DC/DC, the accumulator, the bonding and the high pressure integrated system；
The DC/DC, the accumulator, the low pressure plug connector and the high pressure integrate master control borad and constitute second servo loop.
7. electric energy conversion system according to claim 6, which is characterized in that the impedance loop in first circuit with it is described
The product of the impedance factor in the first circuit is less than the impedance loop of the second servo loop.
8. electric energy conversion system according to claim 7, which is characterized in that the cathode of the DC/DC passes sequentially through high pressure
The signal ground of the signal ground of electronic component and low pressure plug connector is connect with the cathode of the accumulator in integrated system；
The DC/DC, the accumulator, the low pressure plug connector and the electronic component constitute tertiary circuit.
9. electric energy conversion system according to claim 8, which is characterized in that the impedance loop of the tertiary circuit with it is described
The product of the impedance factor of tertiary circuit is more than the impedance loop of the second servo loop.
10. a kind of electric vehicle, which is characterized in that including：Electric energy conversion system as claimed in any one of claims 1-9 wherein.
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| CN201810240343.3A CN108528240B (en) | 2018-03-22 | 2018-03-22 | Electric energy conversion system and electric automobile |
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| CN201810240343.3A CN108528240B (en) | 2018-03-22 | 2018-03-22 | Electric energy conversion system and electric automobile |
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| CN108528240B CN108528240B (en) | 2020-06-19 |
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| CN114834398A (en) * | 2022-06-02 | 2022-08-02 | 浙江吉利控股集团有限公司 | Vehicle with a steering wheel |
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| CN108528240B (en) | 2020-06-19 |
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