CN107765149A - The insulation detection device of integrated multifunction - Google Patents
The insulation detection device of integrated multifunction Download PDFInfo
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- CN107765149A CN107765149A CN201710954713.5A CN201710954713A CN107765149A CN 107765149 A CN107765149 A CN 107765149A CN 201710954713 A CN201710954713 A CN 201710954713A CN 107765149 A CN107765149 A CN 107765149A
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of insulation detection device of integrated multifunction, device includes：Master controller, power circuit, high-pressure flushing cut unit, insulation detecting circuit, voltage x current sample circuit, computation chip, built-in bleeder resistance, control circuit of releasing, LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit；Dc bus and PE lines access high-pressure flushing cut unit between charging pile charging module and main relay, state of insulation detection is carried out by insulation detecting circuit；Dc bus access voltage x current sample circuit after charging pile output main relay, carries out electric energy metrical, battery voltage measurement and charging current by computation chip and measures.The device can solve the problem that the problem of charging pile internal structure is complicated and cost is higher so that circuit collects DC measurement function, drainage function, battery voltage detection function, Insulation monitoring function, completes battery optimization performance.
Description
Technical field
The present invention relates to test and measuring technical field, more particularly to a kind of insulation detection device of integrated multifunction.
Background technology
With the Rapid Popularization of electric automobile, direct-current charging post demand rapid growth, according to national standard, direct-current charging post
Need to possess Insulation monitoring function, drainage function, battery voltage detection function, direct current energy function of measuring.Insulation monitoring function is used
In the state of insulation of detection dc bus, to ensure that direct-current charging post securely and reliably uses.Drainage function stops for charging module
After output, the residual amount of energy of internal output capacitance is released, it is ensured that the safety of charging pile.Battery voltage detection function is real
When detect cell voltage, for battery reversal connection, overvoltage and under-voltage protection provide detection foundation.Direct current energy function of measuring is used to measure
Voltage, electric current, power, the electric parameter such as electric energy of charging pile output.
At present direct-current charging post on the market need independently installed insulation monitoring module, module of releasing, voltage detection module,
Direct current energy meter；Installing component is more, internal electric connection and complex structural designs and cost it is higher.
The content of the invention
Based on this, it is necessary to the problem of existing for conventional art, there is provided a kind of insulation detection device of integrated multifunction,
Can solve the problem that the problem of charging pile internal structure is complicated and cost is higher so that circuit collects DC measurement function, drainage function,
Battery voltage detection function, Insulation monitoring function, complete battery optimization performance.
In a first aspect, the embodiments of the invention provide a kind of insulation detection device of integrated multifunction, described device includes：
Master controller, power circuit, high-pressure flushing cut unit, insulation detecting circuit, sample circuit, computation chip, built-in bleeder resistance, let out
Put control circuit, LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication electricity
Road, the sample circuit are voltage x current sample circuit, and the computation chip and the master controller are arranged to electrical isolation
State, and carry out Control on Communication by isolating photoelectrical coupler；Dc bus between charging pile charging module and main relay
The high-pressure flushing cut unit is accessed with PE lines, state of insulation detection is carried out by the insulation detecting circuit；Charging pile exports institute
The dc bus access voltage x current sample circuit after main relay is stated, passes through the computation chip and carries out electric energy
Metering, battery voltage measurement and charging current measurement, wherein, the cell voltage is battery charging voltage.
In one of the embodiments, the high-pressure flushing cut unit, for the dc bus and the Insulation monitoring
Switching is carried out between circuit.
In one of the embodiments, the insulation detecting circuit is by resistance R1, resistance R2, resistance R3, resistance R4, resistance
R5, resistance R6, photoelectric relay S2, photoelectric relay S3 and master controller composition, R+ is between dc bus positive pole and PE
Insulaion resistance, insulaion resistances of the R- between dc bus negative pole and PE, by controlling the photoelectric relay S2 and the light
Electrical relay S3, complete the detection mode of balanced bridge and nonequilibrium bridge；Wherein, the insulation detecting circuit uses bridge type
Detection method.
In one of the embodiments, when the photoelectric relay S2 and photoelectric relay S3 disconnects, in balance
Electric bridge detection pattern；And the photoelectric relay S2 and the photoelectric relay S3 alternate conductions, detected for nonequilibrium bridge
Pattern.
In one of the embodiments, the voltage x current sample circuit is by resistance R7, resistance R8, resistance R9, resistance
R10, resistance R11, resistance R12, resistance R13, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 are formed；Wherein, voltage signal connects
Enter the dc bus, the bleeder circuit being made up of resistance R12 and resistance R13 carries out partial pressure, by the result after partial pressure send to
The computation chip, and the current divider that current signal is sealed in by the dc bus obtains, by the resistance R7, the electricity
R8, the resistance R9, the resistance R10, the resistance R11, the electric capacity C1, the electric capacity C2 and the electric capacity C3 is hindered to carry out
Filtering, filtered result is sent to the computation chip.
In one of the embodiments, the computation chip, for being sampled to the voltage and current signal of access, and
Calculate voltage, electric current, power and electric energy.
In one of the embodiments, the vent discharge routing resistance R14, resistance R15, resistance R16, resistance R17, resistance
R18, triode Q1, triode Q2, optocoupler U1, diode D1 and master controller composition；Wherein, the resistance R16 is to let out
Electric discharge resistance, the bleeder resistance are built in inside insulation module, and for consuming residual amount of energy, and U1 is optocoupler, to the master
Controller and the leadage circuit carry out electrical isolation.
A kind of insulation detection device of integrated multifunction provided by the invention, device include：Master controller, power circuit,
High-pressure flushing cut unit, insulation detecting circuit, voltage x current sample circuit, computation chip, built-in bleeder resistance, control electricity of releasing
Road, LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit, metering
Chip and master controller carry out Control on Communication to need electrical isolation by isolating photoelectrical coupler；Charging pile charging module
Dc bus and PE lines access high-pressure flushing cut unit between main relay, state of insulation inspection is carried out by insulation detecting circuit
Survey；Dc bus access voltage x current sample circuit after charging pile output main relay, electric energy is carried out by computation chip
Metering, battery voltage measurement and charging current measurement, wherein, cell voltage is battery charging voltage.The device, which can solve the problem that, to be filled
The problem of electric stake internal structure complexity and higher cost so that circuit collects DC measurement function, drainage function, cell voltage inspection
Brake, Insulation monitoring function, complete battery optimization performance.
Brief description of the drawings
Fig. 1 is a kind of insulation detection device of integrated multifunction in one embodiment of the invention in direct-current charging post
Application schematic diagram；
Fig. 2 is a kind of insulation detection device built-in function schematic diagram of integrated multifunction in one embodiment of the invention；
Fig. 3 is the high-pressure flushing cut unit in a kind of insulation detection device of integrated multifunction in one embodiment of the invention
With the circuit theory diagrams of insulation detecting circuit；
Fig. 4 is the voltage and current measurement in a kind of insulation detection device of integrated multifunction in one embodiment of the invention
The circuit theory diagrams of circuit and computation chip；And
Fig. 5 is a kind of principle of the leadage circuit of the insulation detection device of integrated multifunction in one embodiment of the invention
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pair
The insulation detection device of integrated multifunction of the present invention is further elaborated.It is it should be appreciated that described herein specific real
Example is applied only to explain the present invention, is not intended to limit the present invention.
With reference to shown in Fig. 1 and Fig. 2.Wherein, it is a kind of insulation inspection of integrated multifunction in one embodiment shown in Fig. 1
Survey application schematic diagram of the device in direct-current charging post；It is a kind of insulation of integrated multifunction in one embodiment shown in Fig. 2
Detection means built-in function schematic diagram.
Specifically, a kind of insulation detection device for integrated multifunction that the disclosure proposes, device include：Master controller, electricity
Source circuit, high-pressure flushing cut unit, insulation detecting circuit, sample circuit, computation chip, built-in bleeder resistance, control circuit of releasing,
LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit, sample circuit
For voltage x current sample circuit, computation chip and master controller are carried out to need electrical isolation by isolating photoelectrical coupler
Control on Communication；Dc bus and PE lines access high-pressure flushing cut unit between charging pile charging module and main relay, by exhausted
Edge detection circuit carries out state of insulation detection；Dc bus access voltage x current sampling electricity after charging pile output main relay
Road, electric energy metrical, battery voltage measurement and charging current are carried out by computation chip and measured, wherein, cell voltage fills for battery
Piezoelectric voltage.
In the present embodiment, high-pressure flushing cut unit, for carrying out switching between dc bus and insulation detecting circuit.
Further, insulation detecting circuit is by resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, photoelectricity
Relay S2, photoelectric relay S3 and master controller composition, insulaion resistances of the R+ between dc bus positive pole and PE, R- is straight
The insulaion resistance between bus negative pole and PE is flowed, by controlling photoelectric relay S2 and photoelectric relay S3, completes balanced bridge
With the detection mode of nonequilibrium bridge；Wherein, insulation detecting circuit uses bridge type detection method.It should be noted that photoelectricity after
When electrical equipment S2 and photoelectric relay S3 disconnects, in balanced bridge detection pattern；And photoelectric relay S2 and photoelectric relay
S3 alternate conductions, it is nonequilibrium bridge detection pattern.
In addition, voltage x current sample circuit is by resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12,
Resistance R13, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 are formed；Wherein, voltage signal access dc bus, by resistance R12
Carry out partial pressure with the bleeder circuit that resistance R13 is formed, the result after partial pressure sent to computation chip, and current signal pass through it is straight
The current divider that stream bus seals in obtains, by resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C1, electric capacity C2
It is filtered with electric capacity C3, filtered result is sent to computation chip.
Further, computation chip, for being sampled to the voltage and current signal of access, and calculate voltage, electric current,
Power and electric energy.
Further, vent discharge routing resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, triode
Q1, triode Q2, optocoupler U1, diode D1 and master controller composition；Wherein, resistance R16 is bleeder resistance, and bleeder resistance is interior
Put inside insulation module, for consuming residual amount of energy, and U1 is optocoupler, master controller and leadage circuit are carried out electrically every
From.
For clearer understanding and the insulation detection device of application integrated multifunction proposed by the present invention, carry out with shown below
Example.It should be noted that protection scope of the present invention does not limit to the example below.
With reference to shown in Fig. 3-Fig. 5.Wherein, Fig. 3 is a kind of insulation detection device of integrated multifunction in one embodiment
In high-pressure flushing cut unit and insulation detecting circuit circuit theory diagrams；Fig. 4 is a kind of integrated multifunction in one embodiment
Insulation detection device in voltage and current measurement circuit and computation chip circuit theory diagrams；Fig. 5 is in one embodiment
A kind of schematic diagram of the leadage circuit of the insulation detection device of integrated multifunction.
Specifically, a kind of insulation detection device for integrated multifunction that the disclosure proposes mainly has master controller part, electricity
Source circuit, high-pressure flushing cut unit, insulation detecting circuit, voltage x current sample circuit, computation chip, built-in bleeder resistance, release
Control circuit, LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit
Form.Dc bus and PE lines access high-pressure flushing cut unit between charging pile charging module and main relay, then using exhausted
Edge detection circuit carries out state of insulation detection.Dc bus access voltage x current sampling electricity after charging pile output main relay
Road, by computation chip, carry out electric energy metrical, cell voltage, i.e. battery charging voltage measurement and charging current measurement.The disclosure
The insulation detection device of the integrated multifunction of proposition has Insulation monitoring, DC measurement, voltage and current detection, height of releasing
The characteristics of integrated, product minimizes.
Further, the circuit of the high-pressure flushing cut unit in the insulation detection device of the integrated multifunction with reference to shown in Fig. 3
Schematic diagram, high-pressure flushing cut unit is to carrying out switching between dc bus and insulation detecting circuit, by reed switch relay S1, S4 groups
Into, need carry out Insulation monitoring when, dc bus is accessed into insulation detecting circuit, it is not necessary to carry out carrying out thing during Insulation monitoring
Manage switching isolation.Avoid insulation detecting circuit from producing interference to vehicle BMS built-in insulations detection module, influence testing result.
Further, the circuit of the insulation detecting circuit in the insulation detection device of the integrated multifunction with reference to shown in Fig. 3
Schematic diagram, insulation detecting circuit use bridge type detection method, by resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity
Hinder R6, photoelectric relay S2, photoelectric relay S3 and master controller composition, insulated electros of the R+ between dc bus positive pole and PE
Resistance, insulaion resistances of the R- between dc bus negative pole and PE.By controlling photoelectric relay S2 and photoelectric relay S3, respectively
The detection mode of balanced bridge and nonequilibrium bridge is realized, any of which mode is may be selected in system or two patterns are intelligently handed over
Fork uses.When photoelectric relay S2 and photoelectric relay S3 disconnects, in balanced bridge detection pattern.Photoelectric relay S2 and light
Electrical relay S3 alternate conductions, it is nonequilibrium bridge detection pattern.
Further, voltage and current measurement circuit in the insulation detection device of the integrated multifunction with reference to shown in Fig. 4
Circuit theory diagrams, voltage/current signals sample circuit is by resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance
R12, resistance R13, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 are formed.Voltage signal is directly accessed dc bus, Ran Houyou
The bleeder circuit that resistance R12 and resistance R13 is formed carries out partial pressure, is sent into computation chip.Current signal is sealed in by dc bus
Current divider obtain, then pass through, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C1, electric capacity C2 and electricity
Hold C3 to be filtered, be sent into computation chip.
Further, the circuit theory of the computation chip in the insulation detection device of the integrated multifunction with reference to shown in Fig. 4
Figure, computation chip is existing standard product chips, and the voltage and current signal of access is sampled, and calculates voltage, electric current, work(
Rate and electric energy.Computation chip and master controller carry out Control on Communication to need electrical isolation, by isolating photoelectrical coupler.
Further, the schematic diagram of the leadage circuit of the insulation detection device of the integrated multifunction with reference to shown in Fig. 5, releases
Electric routing resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, triode Q1, triode Q2, optocoupler U1, diode
D1 and master controller composition, wherein R16 is bleeder resistance, is built in inside insulation module, is responsible for the consumption of residual amount of energy.U1 is
Optocoupler, electrical isolation is carried out to master controller and leadage circuit.
A kind of insulation detection device of integrated multifunction provided by the invention, device include：Master controller, power circuit,
High-pressure flushing cut unit, insulation detecting circuit, voltage x current sample circuit, computation chip, built-in bleeder resistance, control electricity of releasing
Road, LCD/LED displays, clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit, metering
Chip and master controller carry out Control on Communication to need electrical isolation by isolating photoelectrical coupler；Charging pile charging module
Dc bus and PE lines access high-pressure flushing cut unit between main relay, state of insulation inspection is carried out by insulation detecting circuit
Survey；Dc bus access voltage x current sample circuit after charging pile output main relay, electric energy is carried out by computation chip
Metering, battery voltage measurement and charging current measurement, wherein, cell voltage is battery charging voltage.The device, which can solve the problem that, to be filled
The problem of electric stake internal structure complexity and higher cost so that circuit collects DC measurement function, drainage function, cell voltage inspection
Brake, Insulation monitoring function, complete battery optimization performance.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
1. a kind of insulation detection device of integrated multifunction, described device include：Master controller, power circuit, high-pressure flushing singulation
Member, insulation detecting circuit, sample circuit, computation chip, built-in bleeder resistance, control circuit of releasing, LCD/LED displays, when
Clock circuit, EEPROM, button, battery circuit, 485 telecommunication circuits and CAN communication circuit, the sample circuit are adopted for voltage x current
Sample circuit, the computation chip and the master controller are arranged to electrical isolation state, and are entered by isolating photoelectrical coupler
Row Control on Communication；
Dc bus and PE lines between charging pile charging module and main relay access the high-pressure flushing cut unit, by described
Insulation detecting circuit carries out state of insulation detection；
Charging pile exports the dc bus access voltage x current sample circuit after the main relay, by described
Computation chip carries out electric energy metrical, battery voltage measurement and charging current measurement, wherein, the cell voltage is battery charging electricity
Pressure.
2. device according to claim 1, wherein, the high-pressure flushing cut unit, for the dc bus and described
Switching is carried out between insulation detecting circuit.
3. device according to claim 1, wherein, the insulation detecting circuit is by resistance R1, resistance R2, resistance R3, electricity
Hinder R4, resistance R5, resistance R6, photoelectric relay S2, photoelectric relay S3 and master controller composition, R+ be dc bus positive pole and
Insulaion resistance between PE, insulaion resistances of the R- between dc bus negative pole and PE, by controlling the photoelectric relay S2
With the photoelectric relay S3, the detection mode of completion balanced bridge and nonequilibrium bridge；
Wherein, the insulation detecting circuit uses bridge type detection method.
4. device according to claim 3, wherein, when the photoelectric relay S2 and the photoelectric relay S3 disconnect,
In balanced bridge detection pattern；And
The photoelectric relay S2 and the photoelectric relay S3 alternate conductions, it is nonequilibrium bridge detection pattern.
5. device according to claim 1, wherein, the voltage x current sample circuit is by resistance R7, resistance R8, resistance
R9, resistance R10, resistance R11, resistance R12, resistance R13, electric capacity C1, electric capacity C2, electric capacity C3 and electric capacity C4 are formed；
Wherein, voltage signal accesses the dc bus, and the bleeder circuit being made up of resistance R12 and resistance R13 carries out partial pressure, will
Result after partial pressure is sent to the computation chip, and the current divider that current signal is sealed in by the dc bus obtains, warp
Cross the resistance R7, the resistance R8, the resistance R9, the resistance R10, the resistance R11, the electric capacity C1, the electricity
Hold the C2 and electric capacity C3 to be filtered, filtered result is sent to the computation chip.
6. device according to claim 1, wherein, the computation chip, for entering to the voltage and current signal of access
Row sampling, and calculate voltage, electric current, power and electric energy.
7. device according to claim 1, wherein, the vent discharge routing resistance R14, resistance R15, resistance R16, resistance
R17, resistance R18, triode Q1, triode Q2, optocoupler U1, diode D1 and master controller composition；
Wherein, the resistance R16 is bleeder resistance, and the bleeder resistance is built in inside insulation module, for consuming remnants
Energy, and U1 is optocoupler, and electrical isolation is carried out to the master controller and the leadage circuit.
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| CN109031127A (en) * | 2018-04-24 | 2018-12-18 | 广东电网有限责任公司 | A kind of battery total state monitoring device |
| CN109490619A (en) * | 2018-10-12 | 2019-03-19 | 国网浙江省电力有限公司丽水供电公司 | A kind of direct-current charging post high accuracy number metering device |
| CN110412437A (en) * | 2019-07-23 | 2019-11-05 | 欣旺达电子股份有限公司 | Battery insulation detection circuit and battery insulation detection method |
| CN110927466A (en) * | 2019-11-22 | 2020-03-27 | 上海玖行能源科技有限公司 | High-voltage direct-current insulation detection system and detection method |
| CN111638481A (en) * | 2020-06-12 | 2020-09-08 | 浙江瑞银电子有限公司 | Large-current direct current ammeter and calibration method thereof |
| CN111766554A (en) * | 2020-06-12 | 2020-10-13 | 浙江瑞银电子有限公司 | Direct current ammeter with wide metering range |
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| CN112373320A (en) * | 2020-12-04 | 2021-02-19 | 东风汽车股份有限公司 | BMS-based electric vehicle charging power-on control system and control method thereof |
| CN112578300A (en) * | 2020-11-30 | 2021-03-30 | 珠海格力电器股份有限公司 | Detection device and method for insulation resistance of power battery and automobile |
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Application publication date: 20180306 |