CN206020506U - Switching regulator becomes electric bridge insulating resistor detecting circuit - Google Patents
Switching regulator becomes electric bridge insulating resistor detecting circuit Download PDFInfo
- Publication number
- CN206020506U CN206020506U CN201620951536.6U CN201620951536U CN206020506U CN 206020506 U CN206020506 U CN 206020506U CN 201620951536 U CN201620951536 U CN 201620951536U CN 206020506 U CN206020506 U CN 206020506U
- Authority
- CN
- China
- Prior art keywords
- electric bridge
- resistor
- resistance
- switch
- bridge unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of switching regulator becomes electric bridge insulating resistor detecting circuit, category field of automobile, the circuit includes the second electric bridge unit that the first electric bridge unit that the first electric capacity and first resistor be connected in parallel and the second electric capacity are connected in parallel with second resistance, one end of first electric bridge unit is connected with high voltage bus positive terminal, and be grounded after first switch with 3rd resistor, the 4th resistant series, the other end ground connection of the first electric bridge unit；One end of second electric bridge unit is connected with high voltage bus negative pole end, and is followed by DC source by second switch and the 5th resistance, the 6th resistant series；The other end ground connection of the second electric bridge unit；The two ends of the two ends of 3rd resistor and the 5th resistance are corresponding with battery management system respectively to be connected.This utility model can solve the problems, such as to detect that the precision of insulation resistance, accuracy are low.
Description
Technical field
This utility model is related to field of automobile, and especially a kind of switching regulator becomes electric bridge insulation resistance detection electricity
Road.
Background technology
Electric passenger vehicle power accumulator is critical elements of electric passenger vehicle, it convert chemical energy into electric energy to
The power set of electric passenger vehicle and electrical equipment are powered, as electric passenger vehicle power accumulator is the power current of a high pressure
Pond, and output current is larger, if which leaks electricity or failure of insulation, can produce fatal harm to driver, passenger, therefore,
Being provided with the insulating properties to vehicle in battery management system carries out the insulating resistor detecting circuit of real-time detection, and one kind is such as Fig. 1 institutes
The insulating resistor detecting circuit for showing, measured resistance R1 and R2 are grounded with power sources in series；Battery management system is by detecting respectively
The voltage at R1 and R2 two ends is simultaneously calculated, you can obtain the resistance value of R1 and R2.But this insulating resistor detecting circuit has inspection
During the insulating resistance value of measuring car, the relatively low problem of its precision and accuracy.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of switching regulator and becomes electric bridge insulating resistor detecting circuit, this
When planting the insulating resistance value that edge resistance detecting circuit can solve detection vehicle, the relatively low problem of its precision and accuracy.
In order to solve the above problems, the technical scheme adopted by this utility model is：This switching regulator becomes electric bridge insulated electro
Resistance detection circuit, includes the first electric bridge unit and the second electric capacity and second resistance that the first electric capacity is connected in parallel with first resistor
The second electric bridge unit being connected in parallel, one end of the first electric bridge unit are connected with high voltage bus positive terminal, and by the
It is grounded after one switch and 3rd resistor, the 4th resistant series, the other end ground connection of the first electric bridge unit；Second electric bridge
One end of unit is connected with high voltage bus negative pole end, and is followed by directly by second switch and the 5th resistance, the 6th resistant series
Stream power supply；The other end ground connection of the second electric bridge unit；The two ends of the two ends of the 3rd resistor and the 5th resistance point
Not corresponding with battery management system connect.
In above-mentioned technical proposal, more specifically technical scheme can also be：The first switch is closed, described second is disconnected
Switch, constitutes the first loop of the detection 3rd resistor both end voltage；The first switch is disconnected, the second switch is closed
Constitute the second servo loop of detection the 5th resistance both end voltage.
As a result of above-mentioned technical proposal, this utility model is had the advantages that compared with prior art：
Due to the connection end of the first electric bridge unit and high voltage bus positive terminal by first switch and 3rd resistor, the 4th
It is grounded after resistant series；Second electric bridge unit and high voltage bus negative pole end abutment end by second switch and the 5th resistance, the 6th
Resistant series are followed by DC source；Battery management system need to only control first switch positioned at open position, while controlling second switch
In close stance, or control first switch is in close stance, while controlling second switch in open position, can obtain different voltage inspections
Slowdown monitoring circuit, then detects the magnitude of voltage at 3rd resistor two ends or the 5th resistance two ends respectively, then acquisition is right by passing through to calculate
The automatic detection of electric passenger vehicle vehicle insulation resistance.The accuracy of detection of vehicle insulating resistance value is improved, and can be resisted outer
Portion's signal interference, improves the accuracy of detection.
Description of the drawings
Fig. 1 is existing Vehicular charger circuit theory diagrams.
Fig. 2 is the circuit theory diagrams of this utility model embodiment.
Circuit theory diagrams when Fig. 3 is Fig. 2 detection 3rd resistor R3 both end voltages.
Circuit theory diagrams when Fig. 4 is Fig. 2 the 5th resistance R5 both end voltages of detection.
Specific embodiment
The utility model is described in further detail for embodiment below in conjunction with the accompanying drawings：
Switching regulator shown in Fig. 2 becomes electric bridge insulating resistor detecting circuit, includes the first electric capacity C1 with first resistor R1 simultaneously
The second electric bridge unit 2 that the first electric bridge unit 1 and the second electric capacity C2 that connection connects is connected in parallel with second resistance R2, the first electric bridge
One end of unit 1 is connected with high voltage bus positive terminal HV+, and by first switch SW1 and 3rd resistor R3, the 4th resistance R4
It is grounded after series connection, the other end ground connection of the first electric bridge unit 1；One end of second electric bridge unit and high voltage bus negative pole end HV- phases
Connection, and connected with the 5th resistance R5, the 6th resistance R6 by second switch SW2 and be followed by 5 volts of power supplys of direct current；Second electric bridge unit
2 other end ground connection；The two ends of the two ends of 3rd resistor R3 and the 5th resistance R5 are corresponding with battery management system respectively to be connected.Survey
During amount, first control first switch SW1 closure, second switch SW2 disconnections, constitute detection 3rd resistor R3 two ends as shown in Figure 3
First loop of voltage Vad+ values；Battery management system obtains the voltage Vad+ values at 3rd resistor R3 two ends, then controls first
Switch SW1 disconnects, and second switch SW2 is closed, and constitutes the of the 5th resistance R5 both end voltage Vad- values of detection as shown in Figure 4
Secondary circuit；Battery management system obtains the voltage Vad+ values at the 5th resistance R5 two ends, and then, battery management system is according to default
Computing formula：BecauseSo
OrderThe then insulation resistance of main positive bus-bar
The insulation resistance of main negative busbar
Obtain the detection to electric passenger vehicle insulation resistance.
Claims (2)
1. a kind of switching regulator becomes electric bridge insulating resistor detecting circuit, it is characterised in that：Include the first electric capacity with first resistor simultaneously
The second electric bridge unit that the first electric bridge unit and the second electric capacity that connection connects is connected in parallel with second resistance, the first electric bridge list
One end of unit is connected with high voltage bus positive terminal, and is grounded after first switch with 3rd resistor, the 4th resistant series, institute
State the other end ground connection of the first electric bridge unit；One end of the second electric bridge unit is connected with high voltage bus negative pole end, and is led to
Cross second switch and the 5th resistance, the 6th resistant series are followed by DC source；The other end ground connection of the second electric bridge unit；Institute
The two ends at the two ends and the 5th resistance of stating 3rd resistor corresponding with battery management system respectively connect.
2. switching regulator according to claim 1 becomes electric bridge insulating resistor detecting circuit, it is characterised in that：Close described first
Switch, disconnects the second switch, constitutes the first loop of the detection 3rd resistor both end voltage；Disconnect described first to open
Close, close the second servo loop that the second switch constitutes detection the 5th resistance both end voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620951536.6U CN206020506U (en) | 2016-08-27 | 2016-08-27 | Switching regulator becomes electric bridge insulating resistor detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620951536.6U CN206020506U (en) | 2016-08-27 | 2016-08-27 | Switching regulator becomes electric bridge insulating resistor detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206020506U true CN206020506U (en) | 2017-03-15 |
Family
ID=58252018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620951536.6U Expired - Fee Related CN206020506U (en) | 2016-08-27 | 2016-08-27 | Switching regulator becomes electric bridge insulating resistor detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206020506U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490632A (en) * | 2018-10-25 | 2019-03-19 | 安徽舟之航电池有限公司 | A kind of electric automobile insulation detecting circuit and its insulation detecting method |
| CN113311239A (en) * | 2021-07-21 | 2021-08-27 | 盐城工学院 | Electric automobile insulation resistance detection circuit and method |
-
2016
- 2016-08-27 CN CN201620951536.6U patent/CN206020506U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490632A (en) * | 2018-10-25 | 2019-03-19 | 安徽舟之航电池有限公司 | A kind of electric automobile insulation detecting circuit and its insulation detecting method |
| CN113311239A (en) * | 2021-07-21 | 2021-08-27 | 盐城工学院 | Electric automobile insulation resistance detection circuit and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018036249A1 (en) | Main relay adhesion detection circuit of vehicle-mounted battery management system, and detection method therefor | |
| CN206038771U (en) | Electric automobile insulation resistance detection circuitry | |
| CN202330559U (en) | Automobile insulating resistor detecting circuit | |
| CN101655523B (en) | Detecting circuit for insulating resistance to ground of power cells | |
| EP3779486B1 (en) | Insulation detection circuit and detection method, and battery management system | |
| CN108614158A (en) | A kind of electric automobile insulation resistance detection control circuit and its detection method | |
| KR20140041621A (en) | Device for detecting a defect in insulation | |
| CN105529796B (en) | Subsidiary engine test device in a kind of battery charging circuit and library | |
| CN102201687A (en) | Charging device | |
| CN106911160A (en) | The condition checkout gear and its method of DC charging relay, DC charging system | |
| CN106740198B (en) | Controller for control box on alternating-current charger cable of electric automobile | |
| KR20150052139A (en) | Device for detecting and measuring an insulation fault | |
| US11906599B2 (en) | Earth leakage detecting device, and vehicular power supply system | |
| CN103399571A (en) | Detecting device and method applied to high-voltage circuit of electromobile motor controller | |
| KR20120059943A (en) | Voltage sensing system for detecting disconnection of voltage sensing line of battery | |
| CN206020506U (en) | Switching regulator becomes electric bridge insulating resistor detecting circuit | |
| CN108333503A (en) | A kind of pure electric automobile high-voltage relay state detection circuit and method | |
| CN204452063U (en) | Elec. vehicle fuse state testing circuit | |
| US9656569B2 (en) | Vehicle power source apparatus | |
| CN106299180B (en) | The combination of electric tool and battery pack | |
| CN203929989U (en) | A kind of insulation testing device for electric automobile based on current monitoring | |
| CN202586423U (en) | Electric vehicle power supply system and high-voltage distribution box | |
| CN104882947A (en) | Electric vehicle alternating-current charging mode-I control device and control method | |
| CN203456930U (en) | Compound energy system | |
| CN205901352U (en) | Supply assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20210827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |