CN207114697U - High-tension battery Insulation Inspection System - Google Patents
High-tension battery Insulation Inspection System Download PDFInfo
- Publication number
- CN207114697U CN207114697U CN201720718328.6U CN201720718328U CN207114697U CN 207114697 U CN207114697 U CN 207114697U CN 201720718328 U CN201720718328 U CN 201720718328U CN 207114697 U CN207114697 U CN 207114697U
- Authority
- CN
- China
- Prior art keywords
- tension battery
- negative pole
- resistance
- insulation
- positive pole
- 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.)
- Active
Links
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model provides a kind of high-tension battery Insulation Inspection System, the structure of insulation detecting circuit is redesigned in the high-tension battery Insulation Inspection System, architecture basics are established subsequently to carry out fault self-checking to insulation detecting circuit, improve the performance of high-tension battery Insulation Inspection System；In addition, the voltage and vehicle body ground terminal or the voltage for treating earth terminal and the negative pole of high-tension battery bag between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag are measured by AD sampled subsystems, i.e. insulation detecting circuit in higher-pressure region isolator all referring to the negative pole of high-tension battery bag, therefore, a set of isolation subsystem is only needed to realize isolated from power and communication isolating, component number is considerably reduced compared to existing high-tension battery Insulation Inspection System, reduces cost.
Description
Technical field
Automobile technical field is the utility model is related to, more particularly to a kind of high-tension battery Insulation Inspection System.
Background technology
Electric automobile or hybrid vehicle are relatively more severe in vibration, impact and the leakage of electrokinetic cell corrosive liquids etc.
Environmental condition under, the insulation between vehicle body and power battery pack easily damages, so as to cause decreasing insulating.Pass through
The positive and negative busbar of electrokinetic cell forms loop with vehicle body, raises vehicle body potential, not only the normal work of in-car electrical equipment can be made
Into influence, or even jeopardize the personal safety of passenger.Therefore, the insulating properties between high-tension circuit and vehicle body is real-time and accurately monitored
Can, in-car electric equipment normal work and vehicle safety are run and ensure that passenger safety is significant.
A kind of electric automobile direct-current charging post Insulation Inspection System and detection method are disclosed in the prior art, and it can pass through
Switch positive pole controlling switch and negative pole controlling switch successively, simultaneous formula calculates the positive bus-bar insulation against ground resistance of direct-current charging post
RPWith negative busbar insulation against ground resistance RNValue.But this method has the following disadvantages：First, need to sample positive bus-bar to vehicle body
Three voltages of ground, negative busbar and between positive and negative busbar to vehicle body, at least need respectively using vehicle body and negative busbar as every
Two sets of liftoff sampled subsystems, circuit cost are higher；Secondly, a calculating process needs positive pole controlling switch and negative pole to control
Switch all closes, and positive pole controlling switch closure, negative pole controlling switch disconnect and positive pole controlling switch disconnects, negative pole controlling switch
Three states are closed, the Insulation monitoring response time is longer.
A kind of power cell insulation detection system for electric automobile and method are also disclosed in the prior art, and it can be by cutting
A positive pole controlling switch or negative pole controlling switch are changed, calculates insulation resistance of the power accumulator high pressure both positive and negative polarity respectively to vehicle body ground
Value, realize the real-time Insulation monitoring of power accumulator high pressure and vehicle body ground.But this method has the following disadvantages：First, need to adopt
To the voltage on vehicle body ground, the positive and negative step voltage sampled subsystem proposed is reduced sample high-tension battery bag both positive and negative polarity by resistor network
The isolation performance of high tension loop and low-voltage control circuit；Secondly, when insulation impedance is all relatively low to vehicle body for both positive and negative polarity, only cut
The Insulation monitoring precision for changing a positive pole controlling switch or negative pole controlling switch is poor.
To sum up, existing insulation detecting method is all simple to Insulation monitoring, does not consider to work as device in insulation detecting circuit
Part breaks down to caused by Insulation monitoring influence, such as switch adhesion or can not close, and can all cause insulation resistance value to calculate mistake,
So as to realize insulation fault alarm or cause false alarm.In view of the above-mentioned problems, find a kind of new Insulation Inspection System with
Making up deficiency existing for insulation detecting method in the prior art turns into the task of top priority.
Utility model content
The purpose of this utility model is to provide a kind of high-tension battery Insulation Inspection System, insulated in the prior art with making up
It is insufficient existing for detection method.
In order to solve the above technical problems, the utility model provides a kind of high-tension battery Insulation Inspection System, suitable for detection
Positive pole equivalent insulaion resistance and high-tension battery of the positive pole of the high-tension battery bag of electric automobile or hybrid vehicle to vehicle body ground
The negative pole of bag includes to the equivalent insulaion resistance of negative pole on vehicle body ground, the high-tension battery Insulation Inspection System：High-tension battery bag, absolutely
Edge detection circuit, AD sampled subsystems, isolation subsystem, communication subsystem, control subsystem, the both ends of the high-tension battery bag
The insulation detecting circuit is connected, the AD sampled subsystems measure the positive pole of the high-tension battery bag and the high-tension battery bag
Negative pole between voltage and vehicle body ground terminal or treat voltage between the negative pole of earth terminal and the high-tension battery bag, and pass through
The communication subsystem and the isolation subsystem are output to the control subsystem；
Wherein, the insulation detecting circuit includes：It is connected in parallel on the positive pole auxiliary electricity at the equivalent insulaion resistance both ends of the positive pole
Resistance, the negative pole auxiliary resistance at the equivalent insulaion resistance both ends of the negative pole is connected in parallel on, controls positive pole auxiliary resistance, negative pole auxiliary respectively
Positive pole controlling switch, the negative pole controlling switch of resistance access circuit, starting switch, the first diagnostic assistance resistance and second opinion
Auxiliary resistance, one end of the starting switch are connected with vehicle body, and the other end of the starting switch is connected to the positive pole control
Between system switch and the negative pole controlling switch, one end of the first diagnostic assistance resistance and the positive pole of the high-tension battery bag
Connection, the other end of the first diagnostic assistance resistance are connected with the starting switch；The one of the second opinion auxiliary resistance
End is connected with the negative pole of the high-tension battery bag, and the other end of the second opinion auxiliary resistance is connected with the starting switch,
The intersection point that earth terminal is treated between the first diagnostic assistance resistance and the second opinion auxiliary resistance.
Optionally, in described high-tension battery Insulation Inspection System, in addition to error alarm subsystem, the failure report
Alert subsystem is connected with the control subsystem, and the error alarm subsystem includes fault alarm unit and insulation fault
Alarm unit.
Optionally, in described high-tension battery Insulation Inspection System, the control subsystem is MCU.
Optionally, in described high-tension battery Insulation Inspection System, the isolation subsystem includes isolated from power unit
With communication isolated location.
Optionally, in described high-tension battery Insulation Inspection System, the positive pole controlling switch, negative pole control are opened
Close and the starting switch is one kind in light coupling relay or high pressure dry-reed relay.
In high-tension battery Insulation Inspection System provided by the utility model, in the high-tension battery Insulation Inspection System
The structure of insulation detecting circuit is redesigned, structure base is established subsequently to carry out fault self-checking to insulation detecting circuit
Plinth, improve the performance of high-tension battery Insulation Inspection System；In addition, the positive pole of high-tension battery bag is measured by AD sampled subsystems
Voltage and vehicle body ground terminal between the negative pole of high-tension battery bag treat electricity between the negative pole of earth terminal and high-tension battery bag
Pressure, i.e., insulation detecting circuit in higher-pressure region isolator all referring to the negative pole of high-tension battery bag, therefore it may only be necessary to a set of separaant
Isolated from power and communication isolating is can be achieved in system, and component is considerably reduced compared to existing high-tension battery Insulation Inspection System
Quantity, reduce cost.
During high-tension battery Insulation monitoring is carried out, it is only necessary to can be counted by the disconnection of single switch, closing process
The both positive and negative polarity of high-tension battery bag is calculated to the insulation resistance value on vehicle body ground, the response time is fast, and computation complexity is low；In high-tension battery
When insulation fault all occurs in the both positive and negative polarity of bag, switched twice by the state of both positive and negative polarity controlling switch, simultaneous formula enters one again
Step is accurate to calculate the equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole, so as to improve Insulation monitoring precision.
In addition, during high-tension battery Insulation monitoring is carried out, the fault self-checking of progress insulation detecting circuit is added
Step, so as to avoid, because device failure causes insulation to calculate the mistake even situation of false alarm in insulation detecting circuit, carrying
The precision of high-tension battery Insulation monitoring is risen.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment mesohigh battery insulation detecting system of the utility model one；
Fig. 2 is the flow chart of the embodiment mesohigh battery insulation detection method of the utility model one；
Fig. 3 is the flow chart of the fault self-detection method of insulation detecting circuit in the embodiment of the utility model one.
In figure：
High-tension battery bag 1；Insulation detecting circuit 2；AD sampled subsystems 3；Isolate subsystem 4；Communication subsystem 5；Control
Subsystem 6.
Embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes high-tension battery Insulation Inspection System make into one
Step describes in detail.According to following explanation and claims, advantages and features of the present utility model will become apparent from.It should be noted
It is that accompanying drawing uses using very simplified form and non-accurately ratio, only to convenience, lucidly aids in illustrating this reality
With the purpose of new embodiment.
Refer to Fig. 1, its be high-tension battery Insulation Inspection System of the present utility model structural representation, the utility model
High-tension battery Insulation Inspection System be applied to detection electric automobile or hybrid vehicle high-tension battery bag positive pole to car
The equivalent insulaion resistance of positive pole on body ground and the negative pole of high-tension battery bag are to the equivalent insulaion resistance of negative pole on vehicle body ground (in corresponding diagram 1
RPAnd RN).As shown in figure 1, the high-tension battery Insulation Inspection System includes：High-tension battery bag 1, insulation detecting circuit 2, AD are adopted
Subsystem 3, isolation subsystem 4, communication subsystem 5, control subsystem 6, the both ends connection of the high-tension battery bag 1 are described absolutely
Edge detects circuit 2, and the AD sampled subsystems 3 measure the positive pole of the high-tension battery bag 1 and the negative pole of the high-tension battery bag 1
Between voltage UPNAnd treat the voltage U between the negative pole of earth terminal and the high-tension battery bagN(as can be seen here, Insulation monitoring electricity
Road is in higher-pressure region isolator all referring to the negative pole of high-tension battery bag), and pass through the communication subsystem and the isolation subsystem
System is output to the control subsystem.
Wherein, the insulation detecting circuit 2 includes：It is connected in parallel on the equivalent insulaion resistance R of the positive polePThe positive pole auxiliary at both ends
Resistance RS1, it is connected in parallel on the equivalent insulaion resistance R of the negative poleNThe negative pole auxiliary resistance R at both endsS2, control respectively positive pole auxiliary resistance,
Negative pole auxiliary resistance accesses the positive pole controlling switch S of circuit1, negative pole controlling switch S2, starting switch S0, the first diagnostic assistance electricity
Hinder RB1And second opinion auxiliary resistance RB2, one end of the starting switch is connected with vehicle body, the starting switch it is another
End is connected between the positive pole controlling switch and the negative pole controlling switch, the first diagnostic assistance resistance RB1One end with
The positive pole connection of the high-tension battery bag, the first diagnostic assistance resistance RB1The other end be connected with the starting switch；Institute
State second opinion auxiliary resistance RB2One end be connected with the negative pole of the high-tension battery bag, the second opinion auxiliary resistance RB2
The other end and the starting switch S0Connection, it is described to treat that earth terminal Q is the first diagnostic assistance resistance RB1With described second
R between diagnostic assistance resistanceB2Intersection point.Due to starting switch S0Presence, work as S0During disconnection, effectively improve high tension loop with
The isolation performance of low tension loop.
In order to more intuitively know the working condition of current high-tension battery Insulation Inspection System, the high-tension battery insulation
Detecting system also includes error alarm subsystem, and the error alarm subsystem is connected with the control subsystem, the failure
Alert sub-system includes fault alarm unit and insulation fault alarm unit, when the fault alarm unit starts
When, show that device has failure in insulation detecting circuit；When insulation fault alarm unit starts, show insulation fault be present.
Further, the isolation subsystem includes isolated from power unit and communication isolated location；Wherein, it is described communication every
The communication for being used to isolate between higher-pressure region and low-pressure area (as shown in Figure 1) from unit；The isolated from power unit is used to isolate height
The power supply of nip and low-pressure area (as shown in Figure 1), higher-pressure region refers to the battery powered part of high voltage power, mainly including high-tension battery
Bag, insulation detecting circuit and AD sampled subsystems；Low-pressure area refers to the part to be powered by low pressure booster battery, main to include control
Subsystem, communication subsystem and error alarm subsystem.
Preferably, the control subsystem is micro-control unit (Microcontroller Unit, MCU)；The positive pole
Controlling switch S1, the negative pole controlling switch S2With the starting switch S0For in light coupling relay or high pressure dry-reed relay
It is a kind of.
Accordingly, the present embodiment additionally provides a kind of high-tension battery insulation detecting method.It is detailed below with reference to Fig. 2 and Fig. 3
Illustrate high-tension battery insulation detecting method described in the present embodiment.
First, step S1 is performed, control subsystem receives Insulation monitoring instruction, then first carries out the event of insulation detecting circuit
Hinder self-test, if by step S2 being performed, conversely, then start-up circuit fault alarm unit is alarmed；
Then, step S2 is performed, by starting switch S0Closure, positive pole controlling switch S1With negative pole controlling switch S2Disconnect, profit
With AD sampled subsystems measurement high-tension battery bag positive pole and high-tension battery bag negative pole between voltage and vehicle body ground terminal with
Voltage between the negative pole of high-tension battery bag, and a judgment threshold α is defined, the judgment threshold obtains according to electric resistance partial pressure relation
, formula (1) is expressed as,
In formula (1), α is judgment threshold, UPN, UNRespectively starting switch S0Closure, positive pole controlling switch S1With negative pole control
System switch S2During disconnection, between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag using the measurement of AD sampled subsystems
Voltage between voltage and the negative pole of vehicle body ground terminal and high-tension battery bag, RPFor the equivalent insulaion resistance of positive pole, RNIt is equivalent for negative pole
Insulaion resistance, RB1For the first diagnostic assistance resistance, RB2For second opinion auxiliary resistance.
Then, step S3 is performed, is closure positive pole controlling switch S according to the selection of the numerical values recited of judgment threshold1It is or negative
Pole controlling switch S2, and utilize the positive pole of high-tension battery bag under AD sampled subsystems measurement present case and bearing for high-tension battery bag
The voltage between voltage and the negative pole of vehicle body ground terminal and high-tension battery bag between pole, obtained and public affairs according to electric resistance partial pressure relation
The formula of formula (1) simultaneous, to calculate the equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole, and the positive pole of calculating is equivalent absolutely
Edge resistance and the equivalent insulaion resistance of negative pole carry out numeric ratio compared with to judge whether to need to start insulation with insulation fault judgment threshold
Fault alarm unit is alarmed and the classification of insulation fault alarm.The insulation fault judgment threshold is according to national standard and high-tension electricity
Chi Bao operating voltage (voltage i.e. between the negative pole of the positive pole of high-tension battery bag and high-tension battery bag) is set, in the present embodiment
Insulation fault judgment threshold is set as (500ohm/V × UPN), wherein 500ohm/V refer to national standard《GB/T 18384.1–
2015》Middle 5.1.4 requirement.
Specifically, step S3 includes S30~S32.
S30：Work as α>When 1, selection closure positive pole controlling switch S1, keep negative pole controlling switch S2Disconnect, son is sampled using AD
Voltage and vehicle body ground terminal and high-tension battery bag between the positive pole of systematic survey high-tension battery bag and the negative pole of high-tension battery bag
Negative pole between voltage, and according to electric resistance partial pressure relation obtain formula (2), and simultaneous formula (1) and formula (2) calculating positive pole
The equivalent equivalent insulaion resistance of insulaion resistance and negative pole；Wherein,
In formula (2), β is defined parameters, UPN1, UN1Respectively close positive pole controlling switch S1, keep negative pole controlling switch
S2During disconnection, using AD sampled subsystems measurement the positive pole of high-tension battery bag and the negative pole of high-tension battery bag between voltage with
And the voltage between the negative pole of vehicle body ground terminal and high-tension battery bag, RPFor the equivalent insulaion resistance of positive pole, RNFor the equivalent insulated electro of negative pole
Resistance, RB1For the first diagnostic assistance resistance, RB2For second opinion auxiliary resistance, RS1For positive pole auxiliary resistance；
Wherein, the equivalent insulaion resistance of calculating positive pole and the equivalent insulaion resistance of negative pole that simultaneous formula (1) and formula (2) obtain
For formula (4),
S31：When ratio cc≤1, selection closure negative pole controlling switch S2, keep positive pole controlling switch S1Disconnect, utilize AD
Voltage and vehicle body ground terminal and high pressure between the positive pole of sampled subsystem measurement high-tension battery bag and the negative pole of high-tension battery bag
Voltage between the negative pole of battery bag, and formula (3), and simultaneous formula (1) and formula (3) meter are obtained according to electric resistance partial pressure relation
Calculate the equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole；Wherein,
In formula (3), γ is defined parameters, UPN2, UN2Respectively close negative pole controlling switch S2, keep positive pole control to open
Close S1During disconnection, the voltage between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag of the measurement of AD sampled subsystems is utilized
And the voltage between the negative pole of vehicle body ground terminal and high-tension battery bag, RPFor the equivalent insulaion resistance of positive pole, RNFor the equivalent insulation of negative pole
Resistance, RB1For the first diagnostic assistance resistance, RB2For second opinion auxiliary resistance, RS2For negative pole auxiliary resistance；
Wherein, the equivalent insulaion resistance of calculating positive pole and the equivalent insulaion resistance of negative pole that simultaneous formula (1) and formula (3) obtain
For formula (5),
S32：By the equivalent insulaion resistance of positive pole calculated in step S30 or step S31 and the equivalent insulaion resistance of negative pole and absolutely
Reason barrier judgment threshold carries out numeric ratio compared with to judge whether to start the alarm of insulation fault alarm unit and insulation fault alarm
Classification, the classification of insulation fault alarm includes the alarm of single-ended insulation fault and double ended insulation fault alarm.
Step S32 specifically includes following several situations：
S320：In step S30 or step S31, when the equivalent insulaion resistance of the positive pole of calculating and the equivalent insulaion resistance of negative pole
Both greater than insulation fault judgment threshold when, then it represents that high-tension battery insulating properties are good, without starting insulation fault alarm unit
Alarm；
S321：When one in the equivalent insulaion resistance of the positive pole of calculating and the equivalent insulaion resistance of negative pole sentences less than insulation fault
Disconnected threshold value, when another is more than insulation fault judgment threshold, then it represents that under the single-ended insulating properties of the both positive and negative polarity of high-tension battery bag
Drop, start single-ended insulation fault alarm；
S322：When the equivalent insulaion resistance of the positive pole of calculating and the equivalent insulaion resistance of negative pole are both less than insulation fault judgment threshold
When, change positive pole controlling switch S1With negative pole controlling switch S2On off state, and simultaneous changes positive pole controlling switch S1And negative pole
Controlling switch S2On off state before and after two formula essence is carried out to the equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole
Really calculate, if the equivalent insulaion resistance of the positive pole accurately calculated and the equivalent insulaion resistance of negative pole are still both less than insulation fault judgment threshold
When, then it represents that the double ended insulation hydraulic performance decline of the both positive and negative polarity of high-tension battery bag, start double ended insulation fault alarm.
In step S322, change positive pole controlling switch S1With negative pole controlling switch S2On off state before and after two formula
For formula (3) and formula (2), if such as changing positive pole controlling switch S1With negative pole controlling switch S2On off state before state
For step S30 (S1Closure, S2Disconnect) in state, then change positive pole controlling switch S1With negative pole controlling switch S2Switch shape
State and step S31 (S before and after state2Closure, S1Disconnect) in the state to go into operation it is identical；If conversely, change positive pole controlling switch
S1With negative pole controlling switch S2On off state before state be step S31 (S2Closure, S1Disconnect) in state, then change
Positive pole controlling switch S1With negative pole controlling switch S2On off state before and after state and step S30 (S1Closure, S2Disconnect) in
The state to go into operation is identical, so as to realize the equivalent insulaion resistance of positive pole to calculating before and the numerical value of the equivalent insulaion resistance of negative pole
Verification confirms.
The accurate equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole of calculating is formula (6),
Incorporated by reference to Fig. 3, understand in step S1, the method for carrying out the fault self-checking of insulation detecting circuit, will in the present embodiment
This method is referred to as the fault self-detection method of insulation detecting circuit, and the fault self-detection method of the insulation detecting circuit includes following step
Suddenly：
S10：By starting switch S0, positive pole controlling switch S1With negative pole controlling switch S2In disconnection, the first deviation model is set
Enclose, the voltage U ' between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag is measured using AD sampled subsystemsPNWith it is waiting
Ground terminal Q is to the voltage U ' between the negative pole of high-tension battery bagN0, and calculate the first ratio (i.e.), it is described
First ratio is to treat earth terminal Q to the positive pole of the voltage between the negative pole of high-tension battery bag and high-tension battery bag and high-tension battery bag
Negative pole between voltage ratio；If first ratio is in the first deviation range, step S11 is performed, conversely, then
Start-up circuit fault alarm unit is alarmed；If first ratio is in outside the first deviation range, insulation detecting circuit is represented
Existing failure is：First diagnostic assistance resistance RB1With second opinion auxiliary resistance RB2) abnormal for open circuit or short circuit, startup is opened
Close S0, positive pole controlling switch S1Or negative pole controlling switch S2Adhesion.
S11：By positive pole controlling switch S1Closure, keep starting switch S0With negative pole controlling switch S2Disconnect, setting second is inclined
Poor scope, the voltage U ' between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag is measured using AD sampled subsystemsPN1With
Treat the voltage U ' between the negative pole of earth terminal Q and high-tension battery bagN1, and calculate the second ratio (i.e.
), second ratio is to treat earth terminal Q and high-tension battery bag
Negative pole between voltage and the positive pole of high-tension battery bag and the negative pole of high-tension battery bag between voltage ratio；If described
Two ratios are in the second deviation range, then perform step S12, conversely, then start-up circuit fault alarm unit is alarmed；It is if described
Second ratio is in outside the second deviation range, represents that failure existing for insulation detecting circuit is：Positive pole auxiliary resistance RS1To open
Road or short circuit are abnormal, or positive pole controlling switch S1It can not close.
S12：By negative pole controlling switch S2Closure, keep starting switch S0With positive pole controlling switch S1Disconnect, setting the 3rd is inclined
Poor scope, the voltage U ' between the positive pole of high-tension battery bag and the negative pole of high-tension battery bag is measured using AD sampled subsystemsPN2With
Treat the voltage U ' between the negative pole of earth terminal Q and high-tension battery bagN2, and calculate the 3rd ratio (i.e.
), the 3rd ratio is to treat earth terminal Q and high-tension battery bag
Negative pole between voltage and the negative pole of positive pole and high-tension battery bag between voltage ratio；If the 3rd ratio is in the
In three deviation ranges, then it represents that by the fault self-checking of insulation detecting circuit, conversely, then start-up circuit fault alarm unit report
It is alert；If the 3rd ratio is in outside the 3rd deviation range, represent that failure existing for insulation detecting circuit is：Negative pole auxiliary electricity
Hinder RS2It is abnormal for open circuit or short circuit, or negative pole controlling switch S2It can not close.
First deviation range, the second deviation range and the 3rd deviation range are all in accordance with the shape switched in corresponding step
State, worst-case computation acquisition is carried out according to each element self performance in insulation detecting circuit.For example, by insulation detecting circuit
Each resistance selection is to meet RB1=RB2=5 × RS1=5 × RS2During relation, each resistance precision and AD sampled subsystem is considered
The factor such as error influence, now, the first deviation range is [0.45,0.55], and the second deviation range is [0.8,0.9],
Three deviation ranges are [0.1,0.2].
To sum up, in high-tension battery Insulation Inspection System provided by the utility model, the high-tension battery Insulation monitoring
The structure of insulation detecting circuit is redesigned in system, established subsequently to carry out fault self-checking to insulation detecting circuit
Architecture basics, improve the performance of high-tension battery Insulation Inspection System；In addition, high-tension battery bag is measured by AD sampled subsystems
Positive pole and high-tension battery bag negative pole between voltage and vehicle body ground terminal or treat earth terminal and high-tension battery bag negative pole it
Between voltage, i.e., insulation detecting circuit in higher-pressure region isolator all referring to the negative pole of high-tension battery bag, therefore it may only be necessary to a set of
Isolation subsystem can realize isolated from power and communication isolating, be considerably reduced compared to existing high-tension battery Insulation Inspection System
Component number, reduce cost.
During high-tension battery Insulation monitoring is carried out, it is only necessary to can be counted by the disconnection of single switch, closing process
The both positive and negative polarity of high-tension battery bag is calculated to the insulation resistance value on vehicle body ground, the response time is fast, and computation complexity is low；In high-tension battery
When insulation fault all occurs in the both positive and negative polarity of bag, switched twice by the state of both positive and negative polarity controlling switch, simultaneous formula enters one again
Step is accurate to calculate the equivalent insulaion resistance of positive pole and the equivalent insulaion resistance of negative pole, so as to improve Insulation monitoring precision.
In addition, during high-tension battery Insulation monitoring is carried out, the fault self-checking of progress insulation detecting circuit is added
Step, so as to avoid, because device failure causes insulation to calculate the mistake even situation of false alarm in insulation detecting circuit, carrying
The precision of high-tension battery Insulation monitoring is risen.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Calmly, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content, belonging to right will
Seek the protection domain of book.
Claims (5)
- A kind of 1. high-tension battery Insulation Inspection System, suitable for the high-tension battery bag of detection electric automobile or hybrid vehicle Negative pole equivalent insulaion resistance of the positive pole to the equivalent insulaion resistance of positive pole on vehicle body ground and the negative pole of high-tension battery bag to vehicle body ground, its It is characterised by, the high-tension battery Insulation Inspection System includes：High-tension battery bag, insulation detecting circuit, AD sampled subsystems, every Ion system, communication subsystem, control subsystem, the both ends of the high-tension battery bag connect the insulation detecting circuit, described AD sampled subsystems measure the voltage and vehicle body between the positive pole of the high-tension battery bag and the negative pole of the high-tension battery bag Ground terminal treats voltage between the negative pole of earth terminal and the high-tension battery bag, and passes through the communication subsystem and the isolation Subsystem is output to the control subsystem；Wherein, the insulation detecting circuit includes：The positive pole auxiliary resistance at the equivalent insulaion resistance both ends of the positive pole is connected in parallel on, and The negative pole auxiliary resistance at the equivalent insulaion resistance both ends of the negative pole is associated in, controls positive pole auxiliary resistance, negative pole auxiliary resistance respectively Access positive pole controlling switch, the negative pole controlling switch of circuit, starting switch, the first diagnostic assistance resistance and second opinion auxiliary Resistance, one end of the starting switch are connected with vehicle body, and the other end of the starting switch is connected to the positive pole control and opened Close between the negative pole controlling switch, one end of the first diagnostic assistance resistance and the positive pole of the high-tension battery bag connect Connect, the other end of the first diagnostic assistance resistance is connected with the starting switch；One end of the second opinion auxiliary resistance It is connected with the negative pole of the high-tension battery bag, the other end of the second opinion auxiliary resistance is connected with the starting switch, institute State the intersection point for treating earth terminal between the first diagnostic assistance resistance and the second opinion auxiliary resistance.
- 2. high-tension battery Insulation Inspection System as claimed in claim 1, it is characterised in that also including error alarm subsystem, The error alarm subsystem is connected with the control subsystem, and the error alarm subsystem includes fault alarm unit With insulation fault alarm unit.
- 3. high-tension battery Insulation Inspection System as claimed in claim 1, it is characterised in that the control subsystem is MCU.
- 4. high-tension battery Insulation Inspection System as claimed in claim 1, it is characterised in that the isolation subsystem includes power supply Isolated location and communication isolated location.
- 5. high-tension battery Insulation Inspection System as claimed in claim 1, it is characterised in that the positive pole controlling switch, described Negative pole controlling switch and the starting switch are one kind in light coupling relay or high pressure dry-reed relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720718328.6U CN207114697U (en) | 2017-06-20 | 2017-06-20 | High-tension battery Insulation Inspection System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720718328.6U CN207114697U (en) | 2017-06-20 | 2017-06-20 | High-tension battery Insulation Inspection System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207114697U true CN207114697U (en) | 2018-03-16 |
Family
ID=61587770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720718328.6U Active CN207114697U (en) | 2017-06-20 | 2017-06-20 | High-tension battery Insulation Inspection System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207114697U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318828A (en) * | 2018-04-28 | 2018-07-24 | 苏州弗尔赛能源科技股份有限公司 | A kind of battery insulation monitoring system of vehicle |
| CN109100618A (en) * | 2017-06-20 | 2018-12-28 | 联合汽车电子有限公司 | High-tension battery Insulation Inspection System and method |
| CN109164384A (en) * | 2018-06-28 | 2019-01-08 | 联合汽车电子有限公司 | Motor stator insulated ageing test apparatus and test method |
| CN109254235A (en) * | 2018-11-26 | 2019-01-22 | 重庆长安汽车股份有限公司 | The insulation monitoring device and method of new-energy automobile exchange harness |
| CN109596888A (en) * | 2018-12-17 | 2019-04-09 | 深圳市超思维电子股份有限公司 | Insulation resistance detection method, detection circuit and the battery management system of automobile batteries |
| CN109633462A (en) * | 2018-12-29 | 2019-04-16 | 蜂巢能源科技有限公司 | Cell voltage condition detection method and detection system and battery management system in battery management system |
| CN109917186A (en) * | 2019-03-13 | 2019-06-21 | 江苏迈吉易威电动科技有限公司 | A kind of vehicle high-voltage Insulation Inspection Device for Direct-Current System and monitoring method |
| CN111257640A (en) * | 2020-02-24 | 2020-06-09 | 上海捷氢科技有限公司 | Insulation monitoring method and device for fuel cell system vehicle |
| CN111273132A (en) * | 2019-11-05 | 2020-06-12 | 浙江零跑科技有限公司 | Battery pack insulation detection circuit and diagnosis method |
| CN111562439A (en) * | 2020-03-31 | 2020-08-21 | 中国电力科学研究院有限公司 | Circuit system for measuring insulation impedance of energy storage system by using unbalanced bridge |
| WO2020173472A1 (en) * | 2019-02-28 | 2020-09-03 | 宁德时代新能源科技股份有限公司 | Energy storage system and insulation detection method therefor |
-
2017
- 2017-06-20 CN CN201720718328.6U patent/CN207114697U/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100618A (en) * | 2017-06-20 | 2018-12-28 | 联合汽车电子有限公司 | High-tension battery Insulation Inspection System and method |
| CN109100618B (en) * | 2017-06-20 | 2024-05-31 | 联合汽车电子有限公司 | High-voltage battery insulation detection system and method |
| CN108318828A (en) * | 2018-04-28 | 2018-07-24 | 苏州弗尔赛能源科技股份有限公司 | A kind of battery insulation monitoring system of vehicle |
| CN109164384B (en) * | 2018-06-28 | 2021-04-09 | 联合汽车电子有限公司 | Motor stator insulation aging test device and test method |
| CN109164384A (en) * | 2018-06-28 | 2019-01-08 | 联合汽车电子有限公司 | Motor stator insulated ageing test apparatus and test method |
| CN109254235A (en) * | 2018-11-26 | 2019-01-22 | 重庆长安汽车股份有限公司 | The insulation monitoring device and method of new-energy automobile exchange harness |
| CN109596888A (en) * | 2018-12-17 | 2019-04-09 | 深圳市超思维电子股份有限公司 | Insulation resistance detection method, detection circuit and the battery management system of automobile batteries |
| CN109633462B (en) * | 2018-12-29 | 2021-04-20 | 蜂巢能源科技有限公司 | Battery voltage state detection method and detection system in battery management system and battery management system |
| CN109633462A (en) * | 2018-12-29 | 2019-04-16 | 蜂巢能源科技有限公司 | Cell voltage condition detection method and detection system and battery management system in battery management system |
| WO2020173472A1 (en) * | 2019-02-28 | 2020-09-03 | 宁德时代新能源科技股份有限公司 | Energy storage system and insulation detection method therefor |
| US11726133B2 (en) | 2019-02-28 | 2023-08-15 | Contemporary Amperex Technology Co., Limited | Energy storage system and insulation detection method therefor |
| CN109917186B (en) * | 2019-03-13 | 2021-04-06 | 江苏迈吉易威电动科技有限公司 | Vehicle high-voltage direct-current system insulation monitoring device and monitoring method |
| CN109917186A (en) * | 2019-03-13 | 2019-06-21 | 江苏迈吉易威电动科技有限公司 | A kind of vehicle high-voltage Insulation Inspection Device for Direct-Current System and monitoring method |
| CN111273132A (en) * | 2019-11-05 | 2020-06-12 | 浙江零跑科技有限公司 | Battery pack insulation detection circuit and diagnosis method |
| CN111273132B (en) * | 2019-11-05 | 2022-03-18 | 浙江零跑科技股份有限公司 | Battery pack insulation detection circuit and diagnosis method |
| CN111257640A (en) * | 2020-02-24 | 2020-06-09 | 上海捷氢科技有限公司 | Insulation monitoring method and device for fuel cell system vehicle |
| CN111562439A (en) * | 2020-03-31 | 2020-08-21 | 中国电力科学研究院有限公司 | Circuit system for measuring insulation impedance of energy storage system by using unbalanced bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207114697U (en) | High-tension battery Insulation Inspection System | |
| CN109100618B (en) | High-voltage battery insulation detection system and method | |
| CN103250061B (en) | Insulation resistance measurement circuit having self-est function without generating leakage current | |
| CN202614852U (en) | Power cell insulation detecting system | |
| CN109917186B (en) | Vehicle high-voltage direct-current system insulation monitoring device and monitoring method | |
| CN102841284B (en) | On-line insulated monitoring method for high voltage of electromobile | |
| CN103353581B (en) | A kind of high-voltage state combination detection device for battery | |
| CN202230137U (en) | Power cell insulation detection system for electric automobile | |
| CN101025436A (en) | High-voltage safety monitoring device for electric automobile | |
| CN102508038A (en) | Insulating detection system and method of power battery for electric automobile | |
| CN104090229A (en) | Multipath high-voltage relay output adhesion detection circuit and detection method | |
| CN103675591B (en) | A kind of electrokinetic cell output bus multipoint insulation fault detection circuit | |
| CN108037366A (en) | The insulation resistance detecting system and its detection method of a kind of electric automobile | |
| CN103983857A (en) | Direct current insulation monitoring circuit and method | |
| CN107031410A (en) | A kind of electric vehicle pre-charging circuit and its method for diagnosing faults | |
| CN206710509U (en) | A kind of insulation resistance of DC system observation circuit and system | |
| CN112858949A (en) | Load state detection circuit | |
| CN112731088A (en) | Vehicle high-voltage circuit detection method and device, vehicle and storage medium | |
| CN103091560A (en) | Double line photovoltaic input insulation resistance detection circuit and detection method | |
| CN110426556A (en) | Vehicle megger test method and apparatus | |
| CN105004988A (en) | Power cell system high-voltage relay fault diagnosis method and relevant system | |
| CN105092971A (en) | Pure electric high-voltage insulated resistance real-time online detection method | |
| CN109444507B (en) | Charging voltage acquisition circuit of electric automobile direct current charging pile, insulation detection system and method | |
| CN108872812B (en) | Low-cost insulation leakage detection circuit and detection method | |
| CN110988710A (en) | Storage battery validity online judging device and checking method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |