CN108657088A - For the high voltage distribution box of electric vehicle, electric control system and electric vehicle - Google Patents
For the high voltage distribution box of electric vehicle, electric control system and electric vehicle Download PDFInfo
- Publication number
- CN108657088A CN108657088A CN201710212782.9A CN201710212782A CN108657088A CN 108657088 A CN108657088 A CN 108657088A CN 201710212782 A CN201710212782 A CN 201710212782A CN 108657088 A CN108657088 A CN 108657088A
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- Prior art keywords
- direct current
- relay
- positive bus
- vehicle
- negative busbar
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0238—Electrical distribution centers
-
- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- 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
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to 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
- Y02T10/70—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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to automotive electronics power technology, more particularly to a kind of high voltage distribution box for electric vehicle, the electric control system comprising the high voltage distribution box and the electric vehicle comprising the electric control system.Include according to the high voltage distribution box for electric vehicle of one aspect of the invention：Direct current positive bus；Direct current negative busbar；External dc charging port is coupled to the direct current positive bus and direct current negative busbar through a pair of of relay；Multiple output ports are coupled with the direct current positive bus and direct current negative busbar；And it is coupling in the monitoring unit between the relay and external dc charging port, it is configured to be monitored the power supply state of the external dc power.
Description
Technical field
The present invention relates to automotive electronics power technology, more particularly to a kind of high voltage distribution box for electric vehicle includes
The electric control system of the high voltage distribution box and electric vehicle comprising the electric control system.
Background technology
Studies have shown that the main reason for a large amount of uses of fossil fuel are generation hazes, the wherein exhaust emission of automobile
It is one of the important sources of PM2.5 particles again.In addition, as the mankind are for the large-scale use of fossil fuel, two in air
Content of carbon oxide is growing steadily, and greenhouse effects are increasingly apparent, and all parts of the world extreme weather events occur again and again.In face of such
Desperate situation will bring irrecoverable catastrophic effect if or else taking advantageous measure to the living environment of the mankind.In this regard,
Car industry puts into a large amount of man power and material to research and develop the new automobile using electric power as power source, such as hybrid power vapour
Vehicle and pure electric automobile.Pure electric automobile refers to driving wheels travel with motor using on-vehicle battery as power source, meets road friendship
Logical, security legislation requirements vehicles.Since effect on environment is smaller with respect to orthodox car, foreground is had an optimistic view of extensively.
High pressure vehicle mounted dynamic battery as power source is the core component of electric vehicle, is commonly equipped with high voltage power distribution
Box.High voltage distribution box is the controller switching equipment for pure electric automobile and plug-in hybrid-power automobile, uses centralized power distribution side
Case gives high voltage power supply reasonable distribution to various mobile units.In the state of high-voltage large current being operated in due to high voltage distribution box,
Therefore there is very high requirement for its performance, but the current high voltage distribution box for electric vehicle generally all continues to use industry
The design philosophy of high-tension distribution box cannot be satisfied the demand in terms of safety, reliability and durability.
Invention content
The object of the present invention is to provide a kind of high voltage distribution boxes for electric vehicle, with compact-sized and offer prison
The advantages that brake.
Include according to the high voltage distribution box for electric vehicle of one aspect of the invention：
Direct current positive bus；
Direct current negative busbar；
External dc charging port is coupled to the direct current positive bus and direct current negative busbar through a pair of of relay；
Multiple output ports are coupled with the direct current positive bus and direct current negative busbar；And
The monitoring unit being coupling between the relay and external dc charging port is configured to straight to the outside
The power supply state in galvanic electricity source is monitored.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, vehicle mounted dynamic battery through ESS Electronic Switching System with
One of them described output port is connected, and mobile unit is connected with remaining output port, and the ESS Electronic Switching System is configured
To be selectively switched on or switched off the vehicle mounted dynamic battery and external dc power.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, the monitoring unit includes：
First resistor device group is serially connected between the direct current positive bus and direct current negative busbar and is located at the relay
Between external dc charging port；
Second resistor group is serially connected between the direct current positive bus and direct current negative busbar and is located at the relay
Be connected between the output port of the ESS Electronic Switching System；
The switch being connected between the tap of the first resistor device group and the tap of the second resistor group；And
First operational amplifier, the tap coupler of input terminal and the second resistor group, output end and the vehicle
Control unit couples.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, the full-vehicle control unit to be opened according to described
Pass is in closed state and the relay is off down the electricity at the tap of the second resistor group measured
It presses to determine the state of the relay.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, the monitoring unit includes：
3rd resistor device group is serially connected between the direct current positive bus and direct current negative busbar and is located at the relay
Between external dc charging port；And
Second operational amplifier, the tap coupler of input terminal and the 3rd resistor device group, output end and the vehicle
Control unit couples.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, the full-vehicle control unit to be according to the institute measured
The voltage at the tap of 3rd resistor device group is stated to determine the voltage between the direct current positive bus and direct current negative busbar.
Preferably, above-mentioned in the high voltage distribution box of electric vehicle, the monitoring unit also to include that access is described straight
It flows the current sensing element of positive bus-bar or direct current negative busbar and is configured as follows being monitored power supply state：
When the external dc power charges to the vehicle mounted dynamic battery, measurement flows through the direct current positive bus or direct current negative busbar
Electric current and to full-vehicle control unit output current signal.
It is a further object to provide a kind of electric control systems for electric vehicle, by comprising above-mentioned
High voltage distribution box and have above-mentioned and further advantage.
Include according to the electric control system for electric vehicle of another aspect of the invention：
Full-vehicle control unit；
High voltage distribution box comprising：
Direct current positive bus；
Direct current negative busbar；
External dc charging port is coupled to the direct current positive bus and direct current negative busbar through a pair of of relay；
Multiple output ports are coupled with the direct current positive bus and direct current negative busbar；And
The monitoring unit being coupling between the relay and external dc charging port is configured to straight to the outside
The power supply state in galvanic electricity source is monitored；And
ESS Electronic Switching System, wherein vehicle mounted dynamic battery is through its of the ESS Electronic Switching System and the high voltage distribution box
In output port be connected, mobile unit is connected with remaining output port, and the ESS Electronic Switching System is configured as in institute
Under the control for stating full-vehicle control unit, the vehicle mounted dynamic battery is selectively made to be switched on or switched off with external dc power.
Preferably, in above-mentioned electric control system, the full-vehicle control unit is configured as not receiving from institute
When stating the power supply state monitoring signals of monitoring unit, the order for making the relay disconnect is generated.
It is also an object of the present invention to provide a kind of electric vehicles, have by comprising above-mentioned electric control system
Above-mentioned and further advantage.
Include according to the electric vehicle of another aspect of the invention：
Above-mentioned electric control system；And
Vehicle mounted dynamic battery.
Description of the drawings
The above-mentioned and/or other aspects and advantage of the present invention will be become by the description of the various aspects below in conjunction with attached drawing
It is more clear and is easier to understand, same or analogous unit, which is adopted, in attached drawing is indicated by the same numeral, and attached drawing includes：
Fig. 1 is the schematic diagram according to the electric control system for electric vehicle of one embodiment of the invention.
Fig. 2 is the schematic diagram of the high voltage distribution box in electric control system shown in Fig. 1.
Fig. 3 is the exemplary circuit schematic of the monitoring unit in high voltage distribution box shown in Fig. 2.
Fig. 4 is the exemplary flow of the method for determining relay contact state applied to monitoring unit shown in Fig. 3
Figure.
Specific implementation mode
Referring to which illustrates the attached drawings of illustrative examples of the present invention to more fully illustrate the present invention.But this hair
It is bright to be realized by different form, and be not construed as being only limitted to each embodiment given herein.The above-mentioned each implementation provided
Example is intended to make the disclosure of this paper comprehensively complete, to make the understanding to the scope of the present invention more fully and accurately.
The term of such as "comprising" and " comprising " etc indicates have directly in addition to having in the specification and in the claims
Other than the unit and step clearly stated, technical scheme of the present invention is also not excluded for having its that do not stated directly or clearly
The situation of its unit and step.
The term of such as " first " and " second " etc be not offered as unit time, space, size etc. sequence
And it is only to make differentiation each unit to be used.
According to one aspect of the present invention, external dc charging port is through straight in a pair of of relay access high voltage distribution box
Stream positive bus-bar and direct current negative busbar, vehicle mounted dynamic battery and mobile unit are coupled to direct current positive bus and direct current negative busbar, by
So that vehicle mounted dynamic battery is connected external dc power in ESS Electronic Switching System and vehicle mounted dynamic battery is made to connect vehicle
Carry equipment.This total line access mode of vehicle mounted dynamic battery and mobile unit makes the internal structure of high voltage distribution box more simple
List and improve reliability.
It is another aspect of this invention to provide that by accessing monitoring unit between external DC charging port and relay,
The real-time monitoring to charged state may be implemented, and make when detecting failure and timely responding.For example, working as external dc electricity
When source charges to vehicle mounted dynamic battery, monitoring unit can measure the voltage at external dc charging port and the electricity by measurement
Pressure signal is provided to full-vehicle control unit, or measures the electric current for flowing through direct current positive bus or direct current negative busbar and to full-vehicle control
Unit output current measuring signal.Furthermore when external dc power terminates the charging to the vehicle mounted dynamic battery, monitoring is single
Member can detect the contacts status (such as be closed or disconnect) of relay and export the contacts status detected to full-vehicle control
Unit.The detection signal that full-vehicle control unit is then provided based on monitoring unit, determines whether charging operations are in normal condition simultaneously
And corresponding response (such as instruction external dc power stops power output etc.) is made when occurring abnormal.Although external straight
Galvanic electricity source also provides the monitoring function to charging voltage, but will by configuring voltage measurement function in high voltage distribution box side
Redundancy scheme is provided, to improve the safety of charging process.
The embodiment of the present invention is specifically described below by attached drawing.
Fig. 1 is the schematic diagram according to the electric control system for electric vehicle of one embodiment of the invention.Shown in Fig. 1
Electric control system 1 include high voltage distribution box 10, full-vehicle control unit 20 and ESS Electronic Switching System 30.
In the present embodiment, high voltage distribution box 10 is coupled through interface P110 with external dc power 2, through output port P121
It couples with vehicle mounted dynamic battery 3, and is coupled with various mobile unit (not shown)s through output port P122-P126.Here institute
The mobile unit stated for example includes but not limited at least one of following：DC-DC converter, direct-current-alternating-current converter,
High pressure electric heating system, electric heater, microcontroller and on-board controller.
Full-vehicle control unit 20 can be communicated with high voltage distribution box 10, and one side receives various measurements from high voltage distribution box
On the other hand signal sends control command to high voltage distribution box.
Vehicle mounted dynamic battery 3 is connected through ESS Electronic Switching System 30 with output port P121.Preferably, ESS Electronic Switching System 30
The form that high pressure main relay may be used, is configured as under the control of full-vehicle control unit 20, selectively makes vehicle-mounted
Power battery 3 is switched on or switched off with external dc power 2.
Fig. 2 is the schematic diagram of the high voltage distribution box in electric control system shown in Fig. 1.High voltage distribution box 10 shown in Fig. 2
Including direct current positive bus DC+, direct current negative busbar DC-, external dc charging port P110, output port P121-P126 and prison
Survey unit 130.
In the present embodiment, external dc charging port P110 is coupled to direct current positive bus DC+ through a pair of of relay S1, S2
With direct current negative busbar DC-.
As shown in Fig. 2, the voltage between monitoring unit 130 measuring relay S1, S2 and external dc charging port P110
Signal, so that it is determined that voltage values of the external dc charging port P110 in high voltage distribution box side.Monitoring unit shown in Fig. 2
130 are additionally configured to the contacts status of detection relay S1, S2, and specific implementation mode will be further described below.It can
Selection of land, monitoring unit 130 also include that the current sensing element A of access direct current positive bus DC+ flows through direct current positive bus DC+ to measure
Electric current.Current sensing element A can also measure the electric current for flowing through it by accessing direct current negative busbar DC-.Monitoring unit 130
Measure power supply state monitoring signals (such as external dc charging port P110 high voltage distribution box side voltage signal, stream
Current signal through direct current positive bus or negative busbar and the status signal for representing relay contact state) it is output to vehicle control
Unit 20 processed, the power supply state monitoring signals that the latter is exported based on monitoring unit 130 determine whether charging operations are in normal shape
State and make corresponding response when occurring abnormal.
With continued reference to Fig. 2, output port P121-P126 is also coupled with direct current positive bus DC+ and direct current negative busbar DC+,
In, output port P121 is connected with vehicle mounted dynamic battery 3, and output port P122-P126 then with mobile unit (not shown) phase
Even.The impact of high current in order to prevent, as shown in Fig. 2, in output port P122-P126 and direct current positive bus or direct current negative busbar
Between also concatenate fusible circuit breaker F1-F5.
The operation principle of electric control system shown in Fig. 2 is described below.
When being intended to charge to vehicle mounted dynamic battery 3 using external dc power 2, in the control of full-vehicle control unit 20
Under, the contact closure of relay S1, S2 of high voltage distribution box 10, vehicle mounted dynamic battery 3 is by access direct current positive bus DC+ and direct current
Negative busbar DC-, to make vehicle mounted dynamic battery 3 be connected with external dc power 2.At this point, monitoring unit 130 is periodically or non-periodically
Ground measures external dc charging port P110 in the voltage signal of high voltage distribution box side, and measuring signal is fed to vehicle control
Unit 20 processed.Optionally, monitoring unit 130 also periodically or non-periodically measures the electric current letter for flowing through direct current positive bus or negative busbar
Number, and measuring signal is fed to full-vehicle control unit 20.At the end of charging, 20 indicating relay S1 of full-vehicle control unit,
S2 is disconnected, and monitoring unit 130 detects the contacts status of relay S1, S2 and by the state output detected to full-vehicle control list
Member 20.Specific detection mode in relation to relay S1, S2 state will be further described below.Preferably, it detects
State is output to full-vehicle control unit 20 in a coded form, such as the coding of two bits may be used to indicate relay shape
Represented when state, wherein high order bit and low-order bit value 1 contact of relay in closed state and value be 0 when represent after
The contact of electric appliance is off.
When vehicle mounted dynamic battery 3 to be utilized is powered to mobile unit, under the control of full-vehicle control unit 20, high pressure is matched
The contact of relay S1, S2 of electric box 10 are disconnected, and vehicle mounted dynamic battery 3 is by access direct current positive bus DC+ and direct current negative busbar
DC-, to make vehicle mounted dynamic battery 3 power to mobile unit.
In the present embodiment, when full-vehicle control unit 20 does not receive the monitoring letter of the power supply state from monitoring unit 130
Number when, the order for stopping charging and the order that makes the contact of relay S1 and S2 disconnect will be generated.
Fig. 3 is the exemplary circuit schematic of the monitoring unit in high voltage distribution box shown in Fig. 2.
Monitoring unit 130 shown in Fig. 3 includes relay status detection unit and charging voltage detection unit, wherein after
Electrical equipment state checks unit includes that resistor R1-R6, the first operational amplifier A 1 and switch S, charging voltage detection unit include
Resistor R7, R8, second operational amplifier A2.
As shown in figure 3, in relay status detection unit, resistor R1-R6, the first operational amplifier A 1 and switch S.
As shown in figure 3, resistor R1, R3 be serially connected between direct current positive bus DC+ and direct current negative busbar DC- and positioned at relay S1 and
Between relay S2 and external dc charging port P110, resistor R2, R4 are serially connected in direct current positive bus DC+ and direct current negative busbar
Between DC- and between relay S1 and relay S2 and output port P121.Switch S is connected to resistor R1, R3's
Can be relay, LMDS Light Coupled Device, field-effect altogether between contact or tap and the total contact or tap of resistor R2, R4
Pipe or triode etc..Switch S is configured as being off under the control of full-vehicle control unit 20 or closed state.Resistance
The total contact of device R2, R4 are connected to direct current negative busbar DC- through resistor R5, R6.The input terminal of first operational amplifier A 1 and electricity
The total contact for hindering device R5, R6 is connected, and output end is connected with full-vehicle control unit 20.
The operation principle of relay status control unit is described below.
Table 1 and 2 illustratively give each circuit element in monitoring unit 130 electric parameter.
Table 1
| R1 | 3.992 | Mohm |
| R2 | 3.992 | Mohm |
| R3 | 3.992 | Mohm |
| R4 | 3.992 | Mohm |
| R5 | 3.493 | Mohm |
| R6 | 2.73 | Kohm |
| First op-amp gain | 24 | - |
Table 2
| R7 | 3.992 | Mohm |
| R8 | 2.73 | Kohm |
| Second operational amplifier gain | 12 | - |
In monitoring unit 130 shown in Fig. 3, the various combination of the state of relay S1, S2 and switch S will lead to electricity
Hindering device R1-R6 has different connection relation, to which the output end in the first operational amplifier A 1 generates corresponding value
Voltage signal.By taking the electric parameter that Tables 1 and 2 provides as an example, voltage signal list as shown in table 3 can be obtained.
Table 3
In table 3, the number 0 under S1, S2, S row indicates that relay S1, S2 and switch S are off, digital 1 table
Show that relay S1, S2 and switch S are in closed state, Vbatt indicates that the voltage of vehicle mounted dynamic battery, Vo1 are indicated in relay
Under the various combination of the state of S1, S2 and switch S, the voltage signal values of the first operational amplifier A 1 output.
By table 3 as it can be seen that in the case where switch S is in closed state, four kinds of combinations of states of relay S1 and S2 will be
The output end of first operational amplifier A 1 generates 4 different voltage signal values, therefore can be by by the first operational amplifier A 1
Current output value and table 3 in voltage signal values Vo1 relatively determine the contacts status of relay S1, S2.Optionally, also may be used
With by current output value, (1) is transformed to the transformed value t unrelated with the voltage of vehicle mounted dynamic battery and by the transformed value according to the following formula
The contacts status of relay is compared to determine with the value (hereinafter referred to as characteristic value) in most right column in table 3：
T=1000*Vo1'/Vbatt (1)
Here Vo1' is the current output value of the first operational amplifier A 1, and Vbatt is the voltage of vehicle mounted dynamic battery.
Fig. 4 is the exemplary flow of the method for determining relay contact state applied to monitoring unit shown in Fig. 3
Figure.In the example depicted in fig. 4, it is assumed that each circuit element has electric parameter shown in table 1 and 2 in monitoring unit 130.
Start when monitoring that external dc power 2 disconnects the connection with external dc charging port P110 shown in Fig. 4
Method.As shown in figure 4, in step 410, the high pressure master in the circuit of relay S1 and S2 and access vehicle mounted dynamic battery 3
Relay S3, in the case that S4 is kept closed and switch S is off, full-vehicle control unit 20 reads the first fortune
Calculate the voltage signal values (being denoted as Vo11 below) of amplifier A1 outputs.
Then, 420 are entered step, full-vehicle control unit 20 promotes the contact of relay S1 and S2 to disconnect, make high pressure master after
Electric appliance S3, S4 continue to be kept closed, and switch S are placed in closed state, and in the above-mentioned of relay S1-S4 and switch S
Under combinations of states, the voltage signal values (being denoted as Vo12 below) of the first operational amplifier A 1 output are read.
Subsequently enter step 430, full-vehicle control unit 20 calculates the voltage Vbatt of vehicle mounted dynamic battery and by obtaining
Vbatt evaluations 1000*Vo12/Vbatt, wherein voltage Vbatt can be counted by voltage signal values Vo11 according to the following formula (2)
It calculates：
Vbatt=Vo11/0.00597 (2)
Subsequently enter step 440, full-vehicle control unit 20 is by the characteristic value in transformed value 1000*Vo12/Vbatt and table 3
It is compared to determine the contacts status of relay S1, S2.For example, if 1000*Vo12/Vbatt is (such as two close to 5.97
The error of person is between +/- 0.5), then it can determine that the contact of relay S1, S2 are in off-state, if 1000*
Vo12/Vbatt can then determine that the contact of relay S1 is in close to 4.53 (such as the error of the two is between +/- 0.5)
The contact of off-state and relay S2 are in closed state, if 1000*Vo12/Vbatt close to 9.06 (such as both
Error is between +/- 0.5), then it can determine that the contact of the contact of relay S1 in closed state and relay S2 is in disconnected
Open state, if 1000*Vo12/Vbatt close to 7.29 both (such as error between +/- 0.5), can determine after
The contact of electric appliance S1, S2 are in closed state.
As shown in figure 3, in charging voltage detection unit, resistor R7, R8 are serially connected in direct current positive bus DC+ and direct current is negative
Between busbar DC- and between relay S1 and relay S2 and external dc charging port P110.Second operation amplifier
The input terminal of device A2 is connected with the total contact of resistor R7, R8, and output end is connected with full-vehicle control unit 20.In external dc electricity
During source 2 charges to vehicle mounted dynamic battery 3, full-vehicle control unit 20 can be according to the output of second operational amplifier A2
Signal Vo2 calculates the voltage Vport between direct current positive bus DC+ and direct current negative busbar DC-, whether judges charging operations accordingly
Corresponding response is made in normal condition and when occurring abnormal.
Although having showed and having discussed some aspects of the present invention, those skilled in the art should realize
It arrives：Above-mentioned aspect can be changed under conditions of without departing substantially from the principle of the invention and spirit, therefore the scope of the present invention will
It is limited by claim and equivalent content.
Claims (15)
1. a kind of high voltage distribution box for electric vehicle, which is characterized in that including：
Direct current positive bus；
Direct current negative busbar；
External dc charging port is coupled to the direct current positive bus and direct current negative busbar through a pair of of relay；
Multiple output ports are coupled with the direct current positive bus and direct current negative busbar；And
The monitoring unit being coupling between the relay and external dc charging port is configured to the external dc electricity
The power supply state in source is monitored.
2. being used for the high voltage distribution box of electric vehicle as described in claim 1, wherein vehicle mounted dynamic battery is through electronic cutting relationship
System is connected with output port described in one of them, and mobile unit is connected with remaining output port, the ESS Electronic Switching System quilt
It is configured to that the vehicle mounted dynamic battery is selectively made with external dc power to be switched on or switched off.
3. being used for the high voltage distribution box of electric vehicle as claimed in claim 2, wherein the monitoring unit includes：
First resistor device group is serially connected between the direct current positive bus and direct current negative busbar and positioned at the relay and outside
Between portion DC charging port；
Second resistor group is serially connected between the direct current positive bus and direct current negative busbar and is located at the relay and company
It is connected between the output port of the ESS Electronic Switching System；
The switch being connected between the tap of the first resistor device group and the tap of the second resistor group；And
First operational amplifier, the tap coupler of input terminal and the second resistor group, output end and the full-vehicle control
Unit couples.
4. being used for the high voltage distribution box of electric vehicle as claimed in claim 3, wherein the full-vehicle control unit is according in institute
Switch is stated to be off down at the tap of the second resistor group measured in closed state and the relay
Voltage determine the state of the relay.
5. being used for the high voltage distribution box of electric vehicle as claimed in claim 2, wherein the monitoring unit includes：
3rd resistor device group is serially connected between the direct current positive bus and direct current negative busbar and positioned at the relay and outside
Between portion DC charging port；And
Second operational amplifier, the tap coupler of input terminal and the 3rd resistor device group, output end and the full-vehicle control
Unit couples.
6. being used for the high voltage distribution box of electric vehicle as claimed in claim 5, wherein the full-vehicle control unit is according to measuring
The 3rd resistor device group tap at voltage determine the voltage between the direct current positive bus and direct current negative busbar.
7. being used for the high voltage distribution box of electric vehicle as claimed in claim 2, wherein the monitoring unit also includes access institute
It states the current sensing element of direct current positive bus or direct current negative busbar and is configured as follows carrying out power supply state
Monitoring：When the external dc power charges to the vehicle mounted dynamic battery, measurement flows through the direct current positive bus or direct current
The electric current of negative busbar and to full-vehicle control unit output current signal.
8. a kind of electric control system for electric vehicle, which is characterized in that include：
Full-vehicle control unit；
High voltage distribution box comprising：
Direct current positive bus；
Direct current negative busbar；
External dc charging port is coupled to the direct current positive bus and direct current negative busbar through a pair of of relay；
Multiple output ports are coupled with the direct current positive bus and direct current negative busbar；And
The monitoring unit being coupling between the relay and external dc charging port is configured to the external dc electricity
The power supply state in source is monitored；And
ESS Electronic Switching System, wherein vehicle mounted dynamic battery is through the ESS Electronic Switching System and wherein the one of the high voltage distribution box
A output port is connected, and mobile unit is connected with remaining output port, and the ESS Electronic Switching System is configured as described whole
Under the control of vehicle control unit, the vehicle mounted dynamic battery is selectively made to be switched on or switched off with external dc power.
9. being used for the electric control system of electric vehicle as claimed in claim 8, wherein the monitoring unit includes：
First resistor device group is serially connected between the direct current positive bus and direct current negative busbar and positioned at the relay and outside
Between portion DC charging port；
Second resistor group is serially connected between the direct current positive bus and direct current negative busbar and is located at the relay and company
It is connected between the output port of the ESS Electronic Switching System；
The switch being connected between the tap of the first resistor device group and the tap of the second resistor group；And
First operational amplifier, the tap coupler of input terminal and the second resistor group, output end and the full-vehicle control
Unit couples.
10. as claimed in claim 9 be used for electric vehicle electric control system, wherein the full-vehicle control unit according to
The pumping of the second resistor group measured in the case where the switch is in closed state and the relay is off
Voltage at head determines the state of the relay.
11. being used for the electric control system of electric vehicle as claimed in claim 8, wherein the monitoring unit includes：
3rd resistor device group is serially connected between the direct current positive bus and direct current negative busbar and positioned at the relay and outside
Between portion DC charging port；And
Second operational amplifier, the tap coupler of input terminal and the 3rd resistor device group, output end and the full-vehicle control
Unit couples.
12. as claimed in claim 11 be used for electric vehicle electric control system, wherein the full-vehicle control unit according to
Voltage at the tap of the 3rd resistor device group measured determines the electricity between the direct current positive bus and direct current negative busbar
Pressure.
13. being used for the electric control system of electric vehicle as claimed in claim 8, wherein the monitoring unit also includes to connect
Enter the current sensing element of the direct current positive bus or direct current negative busbar and is configured as follows to power supply state
It is monitored：When the external dc power charges to the vehicle mounted dynamic battery, measurement flow through the direct current positive bus or
The electric current of direct current negative busbar and to full-vehicle control unit output current signal.
14. being used for the electric control system of electric vehicle as claimed in claim 8, wherein the full-vehicle control unit is configured as
When not receiving the power supply state monitoring signals from the monitoring unit, the order for making the relay disconnect is generated.
15. a kind of electric vehicle, which is characterized in that include the electric control system as described in any one of claim 8-14.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212782.9A CN108657088B (en) | 2017-04-01 | 2017-04-01 | High-voltage distribution box for electric automobile, electric control system and electric automobile |
| PCT/CN2017/091615 WO2018176674A1 (en) | 2017-04-01 | 2017-07-04 | High voltage distribution box for use in electric vehicle, electrical control system, and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212782.9A CN108657088B (en) | 2017-04-01 | 2017-04-01 | High-voltage distribution box for electric automobile, electric control system and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108657088A true CN108657088A (en) | 2018-10-16 |
| CN108657088B CN108657088B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710212782.9A Active CN108657088B (en) | 2017-04-01 | 2017-04-01 | High-voltage distribution box for electric automobile, electric control system and electric automobile |
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| Country | Link |
|---|---|
| CN (1) | CN108657088B (en) |
| WO (1) | WO2018176674A1 (en) |
Cited By (2)
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| CN110068767A (en) * | 2019-04-17 | 2019-07-30 | 上海蔚来汽车有限公司 | Power battery data monitoring method, system and device |
| CN111483320A (en) * | 2020-05-07 | 2020-08-04 | 中国重汽集团济南动力有限公司 | Electric automobile high-voltage distribution box relay monitoring system and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589162A (en) * | 2021-08-26 | 2021-11-02 | 合众新能源汽车有限公司 | Adhesion detection circuit and detection method for electric vehicle charging relay |
| CN115184664A (en) * | 2022-09-14 | 2022-10-14 | 广汽埃安新能源汽车有限公司 | Power distribution monitoring method and device based on electric appliance box |
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Also Published As
| Publication number | Publication date |
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| CN108657088B (en) | 2020-10-16 |
| WO2018176674A1 (en) | 2018-10-04 |
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