CN207408556U - A kind of electric vehicle and its high voltage supply system - Google Patents
A kind of electric vehicle and its high voltage supply system Download PDFInfo
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- CN207408556U CN207408556U CN201721366344.XU CN201721366344U CN207408556U CN 207408556 U CN207408556 U CN 207408556U CN 201721366344 U CN201721366344 U CN 201721366344U CN 207408556 U CN207408556 U CN 207408556U
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Abstract
The utility model provides a kind of electric vehicle and its high voltage supply system, and high voltage supply system includes power battery and failure detector, and power battery is connected with DC/DC interfaces and electric attachment interface；Corresponding fuse and relay are both provided on power battery connection DC/DC interfaces and the circuit of electric attachment interface；Failure detector includes processor, processor acquisition is connected with the relay coil detection unit of detection each relay coil part both end voltage, fuse detection unit for the relay contact detection unit for detecting each relay contact part both end voltage signal and for detecting each fuse both end voltage.Technical solution provided by the utility model, failure detector is according to the voltage of each relay coil part and contact part both ends, and the voltage at each fuse both ends judges whether each relay and fuse break down, so as to fulfill the fault detect to each relay and fuse.
Description
Technical field
The utility model belongs to electric vehicle detection technique field, and in particular to a kind of electric vehicle and its high voltage supply system
System.
Background technology
Energy conservation and environmental protection and the significant problem that reduction auto-pollution is that national governments compel highly necessary to solve, new-energy automobile energy-saving ring
The characteristics of guarantor, to solve the problems, such as that this provides effective scheme.New-energy automobile, as power source, passes through motor using power battery
Vehicle traveling is driven, compared to the vehicle two using traditional energy as power, air pollution can not only be reduced, it is small etc. also with noise
Advantage.
Electric vehicle is equipped with substantial amounts of high voltage electric equipment and low voltage equipment, these equipment are all to fill power battery
Take electricity.The electrical equipment on vehicle is controlled and protected for convenience, in the supply lines of power battery connection electrical equipment
Road is both provided with relay and fuse, these devices are generally arranged among the good component of protective on electric vehicle,
It is such as arranged in battery pack or in high voltage control box.Although relay and fuse can be high pressure when devices are in normal work
Electric power system brings positive protection effect, but when these devices break down, it is not easy to detect it is which device goes out
Existing failure and the what kind of failure of appearance.
Utility model content
The utility model provides a kind of electric vehicle and its high voltage supply system, for electric vehicle high voltage supply circuit
Relay and fuse be detected.
To achieve the above object, technical solution provided by the utility model is：
High voltage supply system scheme 1：A kind of high voltage supply system of electric vehicle, including power battery, power battery connects
DC/DC interfaces and electric attachment interface are connected to, for connecting DC/DC converters, electric attachment interface is used to connect each electricity DC/DC interfaces
Attachment；Corresponding fuse and relay are both provided on power battery connection DC/DC interfaces and the circuit of electric attachment interface；
Failure detector is further included, failure detector includes processor, and processor acquisition is connected with each relay of detection
The relay coil detection unit of device coiler part both end voltage, for detecting each relay contact part both end voltage signal
Relay contact detection unit and the fuse detection unit for detecting each fuse both end voltage.
Technical solution provided by the utility model sets failure detector in vehicle high-voltage electric power system, detection
The voltage at the voltage at each relay coil part both ends, the voltage at contact part both ends and each fuse both ends, and according to inspection
The voltage value measured judges whether each relay and fuse break down, so as to fulfill the failure to each relay and fuse
Detection.
High voltage supply system scheme 2：On the basis of high voltage supply system scheme 1, the electricity attachment interface includes being used for
Connect the air compressor machine interface of compressor of air conditioner and the adding thermal resistance interface for connecting adding thermal resistance.
High voltage supply system scheme 3：On the basis of high voltage supply system scheme 1 or 2, further include charging interface and/or
Control unit interface；The power battery is also connected with charging interface, and charging interface is used to connect charging unit；The control unit interface
Power battery is connected with relay by corresponding fuse.
High voltage supply system scheme 4：On the basis of high voltage supply system scheme 3, including first line, the second circuit,
Tertiary circuit and the 4th circuit, and each interface is both provided with anode and cathode；The anode connection first line of the power battery,
Cathode connects the 4th circuit by corresponding relay；The anode of the DC/DC interfaces and charging interface is respectively by corresponding
Fuse connects first line, and second circuit connects first line by corresponding relay；The tertiary circuit and control
The anode of device interface processed connects first line by corresponding fuse respectively；The anode of the electricity attachment interface is respectively by right
The relay answered connects the second circuit；The DC/DC interfaces, charging interface, the cathode of electric attachment interface and control unit interface connect
Connect the 4th circuit.
It is divided into a plurality of circuit, it is convenient that the voltage of each circuit is detected.
High voltage supply system scheme 5：On the basis of high voltage supply system scheme 4, the fuse detection unit is electricity
Detection unit is pressed, voltage detection unit, which detects, connects first line, the anode interface of DC/DC interfaces, the anode of charging interface, the
The anode interface of three circuits and control interface.
A small amount of test point is set, you can the voltage signal at each fuse both ends is detected, according to each fuse both ends
Voltage signal can interpolate that out whether each fuse fuses.
High voltage supply system scheme 6：On the basis of high voltage supply system scheme 4 or 5, the coil detection unit be after
Electric apparatus coil voltage detection unit, for detecting the voltage at each relay coil part both ends；The relay contact detection list
Member is relay contact-voltage detection unit, detection the second circuit of connection, electric attachment interface anode interface and the 4th circuit.
A small amount of test point is set to can detect that the voltage signal at each relay contact part and coiler part both ends, from
And judge whether each relay generates malfunction or tripping.
Vehicle technology scheme 1：A kind of electric vehicle, including high voltage supply system, high voltage supply system includes power battery,
Power battery is connected with DC/DC converters and each electric attachment；In power battery connection DC/DC converters and the circuit of electric attachment
On be both provided with corresponding fuse and relay；
Failure detector is further included, failure detector includes processor, and processor acquisition is connected with each relay of detection
The relay coil detection unit of device coiler part both end voltage, for detecting each relay contact part both end voltage signal
Relay contact detection unit and the fuse detection unit for detecting each fuse both end voltage.
Vehicle technology scheme 2：On the basis of vehicle technology scheme 1, the electricity attachment includes compressor of air conditioner and heating
Resistance.
Vehicle technology scheme 3：On the basis of vehicle technology scheme 1 or 2, charging interface and/or controller are further included；Institute
Power battery connection charging interface is stated, charging interface is used to connect charging unit；The controller by corresponding fuse and
Relay connects power battery.
Vehicle technology scheme 4：On the basis of vehicle technology scheme 3, including first line, the second circuit, tertiary circuit
Corresponding anode and cathode are both provided with the device of the 4th circuit, and each connection power battery；The anode of the power battery
First line is connected, cathode connects the 4th circuit by corresponding relay；The DC/DC converters and charging interface are just
Pole connects first line by corresponding fuse respectively, and second circuit connects first line by corresponding relay；
The tertiary circuit connects first line by corresponding fuse respectively with the anode of controller；The anode point of the electricity attachment
The second circuit is not connected by corresponding relay；The DC/DC converters, charging interface, the cathode of electric attachment and controller
Connect the 4th circuit.
Vehicle technology scheme 5：On the basis of vehicle technology scheme 4, the fuse detection unit is voltage detecting list
Member, voltage detection unit detection connection first line, the anode interface of DC/DC converters, the anode of charging interface, tertiary circuit
And the anode interface of controller.
Vehicle technology scheme 6：On the basis of vehicle technology scheme 4 or 5, the coil detection unit is relay coil
Voltage detection unit, for detecting the voltage at each relay coil part both ends；The relay contact detection unit is relay
Device contact voltage detection unit, detection the second circuit of connection, electric attachment interface anode and the 4th circuit.
Description of the drawings
Fig. 1 is the circuit diagram of vehicle embodiments mesohigh electric power system；
Fig. 2 is the structure diagram of vehicle embodiments mesohigh electric power system failure detector；
Fig. 3 is the breakdown judge logic chart of vehicle embodiments mesohigh electric power system failure detector.
Specific embodiment
The utility model provides a kind of electric vehicle and its high voltage supply system, for electric vehicle high voltage supply circuit
Relay and fuse be detected.
To achieve the above object, technical solution provided by the utility model is：
A kind of high voltage supply system of electric vehicle, including power battery, power battery is connected with DC/DC interfaces and electricity is attached
Part interface, for connecting DC/DC converters, electric attachment interface is used to connect each electric attachment DC/DC interfaces；It is connected in power battery
Corresponding fuse and relay are both provided on DC/DC interfaces and the circuit of electric attachment interface；
Failure detector is further included, failure detector includes processor, and processor acquisition is connected with each relay of detection
The relay coil detection unit of device coiler part both end voltage, for detecting each relay contact part both end voltage signal
Relay contact detection unit and the fuse detection unit for detecting each fuse both end voltage.
The technical solution of the utility model is described further With reference to embodiment.
Vehicle embodiments：
The present embodiment provides a kind of electric vehicle, including high voltage supply system, as shown in Figure 1, the high voltage supply system is set
It is equipped with failure detector.
The high voltage supply system that the present embodiment is provided includes power battery, the first supply line, the second supply line, and the
Three supply lines and the 4th supply line.The anode of power battery connects the first supply line, and the first supply line passes through first
The second supply line of relay J1 connections, the second supply line are supplied by the 3rd supply line of first fuse L1 connections, the 4th
The cathode that electric line passes through the second relay J2 connection power batteries.
High voltage supply system further includes to connect the on high-tension side DC/DC interfaces of DC/DC converters, is moved for connecting vehicle
The OBC interfaces of power battery charger, for the electric attachment interface for connecting vehicle electrical attachment and for connecting control unit MCU's
Control interface, wherein electric attachment interface is included for compressor of air conditioner interface and thermal resistance interface.Above-mentioned each interface all includes phase
The anode interface and cathode interface answered.
The anode interface of DC/DC interfaces is passed through by the first supply line of second fuse L2 connections, the anode of OBC interfaces
3rd the first supply line of fuse L3 connections；The anode interface of compressor of air conditioner interface passes through the 3rd relay J3 connections the 3rd
Supply line, the anode interface of thermal resistance interface pass through the 3rd supply line of the 4th relay J4 connections；The anode of control interface
Interface passes through the 4th the second supply line of fuse L4 connections.DC/DC interfaces, OBC interfaces, compressor of air conditioner interface, thermal resistance
The cathode interface of interface and control interface is all connected with the 4th supply line.
In the first supply line be equipped with voltage detecting point 1, the second supply line be equipped with voltage detecting point 2, first after
The supply line of electric appliance J1 coiler parts is equipped with voltage detecting point 3, the 4th fuse L4 connection control interface anode interface lines
Road is provided with test point 4, and the 3rd supply line is equipped with voltage detecting point 5, and the 3rd fuse L3 connection OBC interface anodes connect
Mouth line road is equipped with voltage detecting point 6, and second fuse L2 connection DC/DC interface anode interfaces circuit is equipped with voltage detecting
Point 7, the supply line of the 4th relay J4 coiler parts are equipped with voltage detecting point 8, the confession of the 3rd relay J3 coiler parts
Voltage detecting point 9 is provided in electric line, is set on the circuit of the 3rd relay J3 connection compressor of air conditioner interface anode interfaces
There is voltage detecting point 10, voltage detecting is provided on the circuit of the 4th relay J4 connection connection thermal resistor interface anode interfaces
11 are put, voltage detecting point 12 is provided in the supply line of the second relay J2 coiler parts, is provided in the 4th supply line
Voltage detecting point 13 is provided with voltage detecting point 14 on the circuit of second relay J2 connection power battery cathodes.
For failure detector as shown in Fig. 2, including processor, processor acquisition is connected with voltage check device, voltage inspection
It surveys device detection and connects above-mentioned each voltage detecting point, according to the voltage signal of each voltage detecting point, judge whether each relay goes out
Whether existing tripping or malfunction and each fuse there is melting fault, and the flow of judgement is as shown in Figure 3.
Such as the first relay J1, failure detector is by detecting voltage detecting point 2 and voltage detecting point 3
Voltage, judges whether it breaks down, and determination methods are：It is reference point with voltage detecting point 14, if detecting voltage detecting
The voltage of point 2 is high level, then by the electric position 1 of voltage detecting point, otherwise sets to 0；Voltage detecting point 3 is relay control inspection
It surveys, it is as a reference point with vehicle body, detect the level of voltage detecting point 3 as high level, then it is on the contrary by the electric position 1 of the point
It sets to 0；The electric potential signal of voltage detecting point 2 and voltage detecting point 3 is subjected to XOR operation, the first relay is judged according to result of calculation
Whether device J1 breaks down, and the form of accident analysis is as shown in table 1.
Table 1
According to this determination methods, by detecting the voltage of voltage detecting point 9 and voltage detecting point 10 to the 3rd relay J3
Accident analysis is carried out, failure point is carried out to the 4th relay J4 by the voltage for detecting voltage detecting point 8 and voltage detecting point 11
Analysis；
According to the voltage signal of voltage detecting point 1, voltage detecting point 12 and voltage detecting point 13, to the second relay J2 into
Row accident analysis, the method for analysis are：It is as a reference point with voltage detecting point 13, if the voltage of voltage detecting point 1 is high electricity
It is flat, then by the electric position 1 of voltage detecting point 13, otherwise set to 0；Voltage detecting point 12 as a reference point with vehicle body, if voltage
The current potential of test point 12 is high level, then by the electric position 1 of voltage detecting point 12, otherwise sets to 0；By voltage detecting point 12 and voltage
The electric potential signal of test point 13 carries out XOR operation, judges whether the second relay J2 breaks down according to result of calculation, failure
The form of analysis is as shown in table 2.
Table 2
For fuse, according to the voltage signal at each fuse both ends, judge whether each fuse is blown：If some
The front end of fuse has voltage and rear end out of power pressure, then is determined as fuse blows；
Such as first fuse L1, if detect voltage detecting point 2 compared with voltage detecting point 14 be high level,
By the electric position 1 of voltage detecting point 2, otherwise set to 0；If detect that voltage detecting point 5 is electric for height compared with voltage detecting point 14
It is flat, then by the electric position 1 of voltage detecting point 5, otherwise set to 0；The electric potential signal of voltage detecting point 2 and voltage detecting point 5 is carried out
NAND operation judges whether first fuse L1 breaks down according to result of calculation, and the form of accident analysis is as shown in table 3.
Table 3
Accident analysis is carried out to each relay and fuse according to above-mentioned determination methods, obtains the high-pressure system failure of vehicle
List, as shown in table 4.
Table 4
The electric vehicle that the present embodiment is provided, high voltage supply system are equipped with to connect the DC/ of DC/DC converters
DC interfaces and the OBC interfaces for connecting charging unit, electric attachment interface include compressor of air conditioner interface and PTC interfaces；As
Other embodiment, electric attachment interface can also set other interfaces, such as the interface for connecting condenser.
High voltage supply system embodiment：
The present embodiment provides the high pressure confessions in a kind of high voltage supply system of electric vehicle, with above-mentioned electric vehicle embodiment
Electric system is identical, has been discussed in detail in vehicle embodiments, seldom explains here.
Claims (12)
1. a kind of high voltage supply system of electric vehicle, including power battery, power battery is connected with DC/DC interfaces and electric attachment
Interface, for connecting DC/DC converters, electric attachment interface is used to connect each electric attachment DC/DC interfaces；It is connected in power battery
Corresponding fuse and relay are both provided on DC/DC interfaces and the circuit of electric attachment interface；
It is characterized in that, further including failure detector, failure detector includes processor, and processor acquisition is connected with detection
The relay coil detection unit of each relay coil part both end voltage, for detecting each relay contact part both end voltage
The relay contact detection unit of signal and the fuse detection unit for detecting each fuse both end voltage.
A kind of 2. high voltage supply system of electric vehicle according to claim 1, which is characterized in that the electricity attachment interface
Including being used to connect the air compressor machine interface of compressor of air conditioner and adding thermal resistance interface for connecting adding thermal resistance.
3. the high voltage supply system of a kind of electric vehicle according to claim 1 or 2, which is characterized in that further include charging
Interface and/or control unit interface；The power battery is also connected with charging interface, and charging interface is used to connect charging unit；It is described
Control unit interface connects power battery by corresponding fuse with relay.
4. a kind of high voltage supply system of electric vehicle according to claim 3, which is characterized in that including first line,
Second circuit, tertiary circuit and the 4th circuit, and each interface is both provided with anode and cathode；The anode connection of the power battery
First line, cathode connect the 4th circuit by corresponding relay；The anode of the DC/DC interfaces and charging interface leads to respectively
Corresponding fuse connection first line is crossed, second circuit connects first line by corresponding relay；Described 3rd
Circuit connects first line by corresponding fuse respectively with the anode of control unit interface；The anode point of the electricity attachment interface
The second circuit is not connected by corresponding relay；The DC/DC interfaces, charging interface, electric attachment interface and control unit interface
Cathode connect the 4th circuit.
A kind of 5. high voltage supply system of electric vehicle according to claim 4, which is characterized in that the fuse detection
Unit is voltage detection unit, and voltage detection unit detection connects first line, the anode interface of DC/DC interfaces, charging interface
Anode, the anode interface of tertiary circuit and control interface.
A kind of 6. high voltage supply system of electric vehicle according to claim 4 or 5, which is characterized in that the coil inspection
Survey unit is relay coil voltage detection unit, for detecting the voltage at each relay coil part both ends；The relay
Contact detection unit is relay contact-voltage detection unit, detection the second circuit of connection, electric attachment interface anode interface and the
Four circuits.
7. a kind of electric vehicle, including high voltage supply system, high voltage supply system includes power battery, and power battery is connected with
DC/DC converters and each electric attachment；It is both provided on the circuit of power battery connection DC/DC converters and electric attachment corresponding
Fuse and relay；
It is characterized in that, further including failure detector, failure detector includes processor, and processor acquisition is connected with detection
The relay coil detection unit of each relay coil part both end voltage, for detecting each relay contact part both end voltage
The relay contact detection unit of signal and the fuse detection unit for detecting each fuse both end voltage.
8. a kind of electric vehicle according to claim 7, which is characterized in that the electricity attachment includes compressor of air conditioner and adds
Thermal resistance.
9. a kind of electric vehicle according to claim 7 or 8, which is characterized in that further include charging interface and/or control
Device；The power battery connects charging interface, and charging interface is used to connect charging unit；The controller by fusing accordingly
Device connects power battery with relay.
10. a kind of electric vehicle according to claim 9, which is characterized in that including first line, the second circuit, the 3rd
Circuit and the 4th circuit, and the device of each connection power battery is both provided with corresponding anode and cathode；The power battery
Anode connects first line, and cathode connects the 4th circuit by corresponding relay；The DC/DC converters and charging interface
Anode connects first line by corresponding fuse respectively, and second circuit connects First Line by corresponding relay
Road；The tertiary circuit connects first line by corresponding fuse respectively with the anode of controller；The electricity attachment is just
Pole connects the second circuit by corresponding relay respectively；The DC/DC converters, charging interface, electric attachment and controller
Cathode connects the 4th circuit.
11. a kind of electric vehicle according to claim 10, which is characterized in that the fuse detection unit is examined for voltage
Unit is surveyed, voltage detection unit, which detects, connects first line, the anode interface of DC/DC converters, the anode of charging interface, and the 3rd
The anode interface of circuit and controller.
12. a kind of electric vehicle according to claim 10 or 11, which is characterized in that the coil detection unit is relay
Device coil voltage detection unit, for detecting the voltage at each relay coil part both ends；The relay contact detection unit
For relay contact-voltage detection unit, detection the second circuit of connection, electric attachment interface anode and the 4th circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366344.XU CN207408556U (en) | 2017-10-20 | 2017-10-20 | A kind of electric vehicle and its high voltage supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721366344.XU CN207408556U (en) | 2017-10-20 | 2017-10-20 | A kind of electric vehicle and its high voltage supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207408556U true CN207408556U (en) | 2018-05-25 |
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ID=62320904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721366344.XU Expired - Fee Related CN207408556U (en) | 2017-10-20 | 2017-10-20 | A kind of electric vehicle and its high voltage supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207408556U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696621A (en) * | 2017-10-20 | 2019-04-30 | 河南森源重工有限公司 | A kind of electric vehicle and its high voltage supply system and fault detection method |
| CN114047454A (en) * | 2021-11-03 | 2022-02-15 | 一汽解放汽车有限公司 | Vehicle power system fault diagnosis method, system, device and medium |
-
2017
- 2017-10-20 CN CN201721366344.XU patent/CN207408556U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696621A (en) * | 2017-10-20 | 2019-04-30 | 河南森源重工有限公司 | A kind of electric vehicle and its high voltage supply system and fault detection method |
| CN114047454A (en) * | 2021-11-03 | 2022-02-15 | 一汽解放汽车有限公司 | Vehicle power system fault diagnosis method, system, device and medium |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180525 Termination date: 20211020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |