CN106814311A - Battery circuit breaker capable of detecting abnormal conduction of switch and detection method thereof - Google Patents
Battery circuit breaker capable of detecting abnormal conduction of switch and detection method thereof Download PDFInfo
- Publication number
- CN106814311A CN106814311A CN201610644925.9A CN201610644925A CN106814311A CN 106814311 A CN106814311 A CN 106814311A CN 201610644925 A CN201610644925 A CN 201610644925A CN 106814311 A CN106814311 A CN 106814311A
- Authority
- CN
- China
- Prior art keywords
- switch
- current path
- insulation impedance
- circuit breaker
- conducting
- 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.)
- Granted
Links
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 79
- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 238000009413 insulation Methods 0.000 claims description 79
- 238000000034 method Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 102100024061 Integrator complex subunit 1 Human genes 0.000 description 2
- 101710092857 Integrator complex subunit 1 Proteins 0.000 description 2
- 102100033265 Integrator complex subunit 2 Human genes 0.000 description 2
- 108050002021 Integrator complex subunit 2 Proteins 0.000 description 2
- 102100033263 Integrator complex subunit 3 Human genes 0.000 description 2
- 101710092886 Integrator complex subunit 3 Proteins 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A battery breaker capable of detecting abnormal conduction of a switch and a detection method thereof are provided, the battery breaker is provided with a first switch, a second switch and a processor, and the first switch and the second switch are arranged on a first current path and a second current path between a power supply and a load. The first switch and the second switch are selectively conducted according to the enabling signal. The processor is electrically connected to one of the first and second current paths. When the enabling signal indicates that the first switch and the second switch are switched to be off, the processor judges whether the first switch or the second switch is abnormally conducted or not according to the voltage value of the first current path or the second current path and a preset voltage value. When the first switch or the second switch is judged to be abnormally conducted, the processor compares the voltage value of the first current path or the second current path with the preset voltage value to judge that the first switch or the second switch is abnormally conducted.
Description
Technical field
The present invention is particularly a kind of on a kind of detectable battery circuit breaker for switching abnormal conducting and its detection method
Suitable for electric motor car, with the battery circuit breaker for judging electric motor car switch whether welding without normally battery circuit breaker and its
Detection method.
Background technology
The existing vehicles generally by burns gasoline as power resources, with the promotion of environmental protection ideas, in order to drop
The injury that low burns gasoline and collection oil are caused to environment, has many researchs and resource input in development electric motor car at present.
Although electronic Trucks can reduce injury to environment, the battery capacity of its power system, discharge and recharge using electric power as power resources
The stability of efficiency and system is all associated with the quality of electric motor car quality.
In electric motor car electric power system, generally supplied to the current path of electric motor car electric power in power supply and battery open circuit is set
Device, determines that the electric switch of electric motor car opens (key on) or electric switch closing (key off) by whether turning on for battery circuit breaker.So
And, when user has controlled battery circuit breaker to end, but battery circuit breaker is because switch welding or other reasonses, without just
Often during conducting, power supply can constantly supply electricity to electric motor car, in turn result in the consumption of power supply.Existing battery circuit breaker does not have
The mechanism of the whether abnormal conducting of detection switch, and the method whether detection switch turns on is typically to set electricity at the two ends of switch
Pressure meter, judges whether switch turns on by the voltage of measurement switch ends.If however, battery circuit breaker is adopted this method not
Only increase the number of times of detection, and need to set up potentiometer at each two ends for switching, and then increase testing cost.
The content of the invention
The invention reside in the battery circuit breaker and its detection method that provide a kind of abnormal conducting of detectable switch, solution is used
Certainly existing battery circuit breaker cannot detect battery circuit breaker switch whether the problem of abnormal conducting, and then reduce electric motor car
The situation of the abnormal consumption of power supply.
The detectable battery circuit breaker for switching abnormal conducting disclosed in this invention, with first switch, second switch
And processor.First switch is arranged at the first current path between the first end of power supply and load, and according to the choosing of enable signal
Turn on to selecting property.Second switch is arranged at the second current path between the second end of power supply and load, and according to enable signal
Selectively turn on.Processor is electrically connected with one of the first current path and the second current path, when enable signal designation
When first switch and second switch switch to cut-off, processor is according to one of the first current path and the second current path
Whether magnitude of voltage and preset voltage value, judge the abnormal conducting of one of first switch and second switch, and ought judge first
When switch and the abnormal conducting of one of second switch, processor compare the first current path and the second current path wherein it
One magnitude of voltage and the size of preset voltage value, judge the abnormal conducting of first switch or the abnormal conducting of second switch.
The method of the abnormal conducting of switch of detection battery circuit breaker disclosed in this invention, it is adaptable to battery circuit breaker.
Battery circuit breaker has first switch and second switch, and first switch is arranged at the first electricity between the first end of power supply and load
Flow path.Second switch is arranged at the second current path between the second end of power supply and load.Battery circuit breaker detection switch
The method of abnormal conducting has according to the conducting of enable signal-selectivity ground first switch and second switch.When enable signal designation
When first switch and second switch switch to cut-off, according to the magnitude of voltage of one of the first current path and the second current path
With preset voltage value, whether the abnormal conducting of one of first switch and second switch is judged.When judging first switch and
During two one of them abnormal conductings of switch, compare the magnitude of voltage of one of the first current path and the second current path with it is pre-
If the size of magnitude of voltage, the abnormal conducting of first switch or the abnormal conducting of second switch are judged.
The battery circuit breaker of the abnormal conducting of detectable switch according to the invention described above and its detection method, by
Voltage swing on first current path and the second current path is detected by processor, first switch can be according to this judged or second be opened
Close one of them whether abnormal conducting, also can determine whether out be first switch it is abnormal conducting or the abnormal conducting of second switch,
Whether the abnormal conducting of the switch for alloing battery circuit breaker to detect battery circuit breaker is used, and then reduces the power supply of electric motor car not
The situation of normal consumption.
The explanation of explanation and following implementation method above with respect to present disclosure is used to demonstrate and explains of the invention
Spirit and principle, and patent claim of the invention is provided further explains.
Brief description of the drawings
Fig. 1 is the circuit diagram of the battery circuit breaker according to depicted in one embodiment of the invention.
Fig. 2 is the circuit diagram of the battery circuit breaker according to depicted in another embodiment of the present invention.
Fig. 3 is the schematic diagram of predetermined voltage waveform according to depicted in yet another embodiment of the invention and virtual voltage waveform.
The step of Fig. 4 is the method for the measurement insulation impedance according to depicted in one embodiment of the invention flow chart.
The step of Fig. 5 is the method for the measurement insulation impedance according to depicted in another embodiment of the present invention flow chart.
Wherein reference is：
10th, 40 battery circuit breaker
11st, 41 first switch
13rd, 43 second switch
15th, 45 processor
47 the 3rd switches
49 the 4th switches
20th, 50 power supply
21st, 51 first end
23rd, 53 second end
30th, 60 load
The insulation impedance of Z1, Z3 first
The insulation impedance of Z2, Z4 second
The internal driving of Ra, Re first
The internal driving of Rb, Rf second
Rc, Rd resistance
The current path of P1, P3 first
The current path of P2, P4 second
Specific embodiment
Hereinafter detailed features of the invention and advantage are described in detail in embodiments, its content is enough to make any be familiar with
Relevant art understands technology contents of the invention and simultaneously implements according to this, and according to content disclosed in this specification, apply for a patent
Scope and schema, it is any to be familiar with relevant art and be readily understood upon the purpose and advantage of correlation of the invention.Following embodiment
It is to further describe viewpoint of the invention, but it is non-anyways limiting scope of the invention.
Fig. 1 is refer to, Fig. 1 is the circuit diagram of the battery circuit breaker according to depicted in one embodiment of the invention.Such as Fig. 1
Shown, battery circuit breaker 10 has first switch 11, second switch 13 and processor 15.First switch 11 is arranged at power supply 20
The first current path P1 between first end 21 and load 30, and according to the conducting of enable signal-selectivity ground.Second switch 13 sets
The second current path P2 being placed between the second end 23 of power supply 20 and load 30, and according to the conducting of enable signal-selectivity ground.
Processor 15 is electrically connected with one of the first current path P1 and the second current path P2, when enable signal designation first switch
11 and second switch 13 when switching to cut-off, processor 15 is according to one of the first current path P1 and the second current path P2
Magnitude of voltage and preset voltage value, judge first switch 11 and second switch 13 one of them whether abnormal conducting, and when sentencing
When disconnected first switch 11 and one of them the abnormal conducting of second switch 13, processor 15 compares the first current path P1 and second
The magnitude of voltage of one of current path P2 and the size of preset voltage value, judge that first switch 11 is abnormal and turn on or second opens
Close 13 abnormal conductings.
The end 23 of first end 21 and second of power supply 20 is, for example, the positive terminal and negative pole end of battery.First switch 11 is used to lead
The positive terminal in energization source 20 to the current path loaded between 30, second switch 13 is extremely loaded to the negative pole end of turn-on power 20
Current path between 30.When first switch 11 and second switch 13 be heated or other factors and during welding, electricity may be directed at
The positive terminal of source 20 or negative pole end constantly supply power to load 30, therefore, by detection the first current path P1 and the second electric current road
The magnitude of voltage of one of footpath P2, it can be determined that first switch 11 or second switch 13 occur the situation of abnormal conducting.
Furthermore, because the power system of current electric motor car is mostly to be overlapped in car body, the low-voltage as power system is accurate
Position.And the insulation impedance between power system and car body, the foundation of power system leakage protection is commonly used as, that is, it is electronic
The insulation impedance of car needs to be controlled in more than a limits value, to ensure the protection effect of electric motor car power system.However, by
In electric motor car in the process of moving, the puddles of water, collision or Uneven road are for example run over and is rubbed to situations such as car bodies, be likely to
The change of electric motor car insulation impedance can be caused, therefore, in another embodiment, battery circuit breaker 10 is except that can detect first
Whether outside switch 11 or the abnormal conducting of second switch 13, battery circuit breaker 10 can also be used to measure the size of insulation impedance.
Fig. 2 is refer to, Fig. 2 is the circuit diagram of the battery circuit breaker according to depicted in another embodiment of the present invention.Such as
Shown in Fig. 2, battery circuit breaker 40 is electrically connected between power supply 50 and load 60.Battery circuit breaker 40 have first switch 41,
The switch of second switch the 43, the 3rd 47 and the 4th switch 49 and processor 45.Power supply 50 has the end 53 of first end 51 and second, for example
Positive terminal and negative pole end.Load 60 be electric motor car inside use electrical component, for example DC-DC converter, electronic controller,
Secondary side module, motor, instrument, car light or other use electrical component, the present embodiment refuses limitation.The first end 51 of power supply 50 and
Two ends 53 are electrically connected to a low voltage level, such as car body or other suitable places.The first end 51 of power supply 50 with it is low
There is the first insulation impedance Z3 between voltage quasi position, there is the second insulation resistance between the second end 53 of power supply 50 and low voltage level
Anti- Z4, for convenience of explanation, the low voltage level in Fig. 2 is shown with earth terminal, but is not limited thereto.
First switch 41 is arranged at the first current path P3 between the first end 51 of power supply 50 and load 60.Second switch
43 the second current path P4 between the second end 53 of power supply 50 and load 60.3rd switch 47 has the first equivalent resistance
Value, and it is parallel to the first insulation impedance Z3.4th switch 49 has the second equivalent resistance, and is parallel to the second insulation impedance
Z4.For convenience of explanation, the equivalent resistance of the 3rd switch 47 is represented in Fig. 2 with resistance Rc, the 4th switch 49 is represented with resistance Rd
Equivalent resistance.In other embodiment, battery circuit breaker 40 can also have first resistor and second resistance, first resistor string
The 3rd switch 47 is coupled to, second resistance is series at the 4th switch 49.In other words, the resistance Rc in Fig. 2 can also represent first
Resistance, resistance Rd can also represent second resistance, and the present embodiment refuses limitation.
Processor 45 is electrically connected with one of the first current path P3 and the second current path P4, is used to control the 3rd to open
The switch 49 of pass 47 and the 4th, and when the 3rd switch 47 and the 4th switch 49 are selectively turned on, processor 45 is according to the first electricity
The magnitude of voltage of one of flow path P3 and the second current path P4, judges the first insulation impedance Z3's and the second insulation impedance Z4
Size.In Fig. 2, processor 45 is electrically connected to the first current path P3 and the second current path P4, in actual application,
Processor 45 only can be electrically connected with one of the first current path P3 and the second current path P4 according to actual demand,
The present embodiment refuses limitation.
In Fig. 2, battery circuit breaker 40 has more the first internal driving Re and the second internal driving Rf.First internal driving
Re is located between first switch 41 and load 60, and is electrically connected between the first current path P3 and reference potential end.Second
Internal driving Rf is located between second switch 43 and load 60, and be electrically connected with the second current path P4 and reference potential end it
Between.That is, the first internal driving Re for battery circuit breaker 40 the first current path P3 and low voltage level between etc.
Effect impedance, the equiva lent impedance between the second current path P4 and low voltage level of the second internal driving Rf battery circuit breakers 40.
Show that the first internal driving Re and the second internal driving Rf are used for convenience of description in the icon of the present embodiment, and be not used to limit
The present embodiment processed, that is, the setting of the first internal driving Re and the second internal driving Rf can be cancelled in other embodiment.The
Other stray resistances or other suitable resistance, this implementation in one internal driving Re and the second internal driving Rf such as electric motor cars
Example is not limited.
In the schema of the present embodiment, first switch 41, the switch 49 of the switch of second switch the 43, the 3rd 47 and the 4th are with simple
Switch symbols show, but in actual example, first switch 41, the switch of the switch of second switch the 43, the 3rd 47 and the 4th
49 can be transistor, relay or other suitable on-off circuits or component, and the present embodiment refuses limitation.Additionally, first opens
Pass 41 and second switch 43 are controlled by enable signal and selectively turn on, electronic when enable signal is, for example, that electric motor car starts
The electric switch of car opens (key on) and electric switch closes the signal of (key off).When first switch 41 and second switch 43 are turned on,
Power supply 50 supplies electricity to load 60 through galvanic battery breaker 40.
When battery circuit breaker 40 will measure the first insulation impedance Z3 and the second insulation impedance Z4, first according to Fig. 2,
When first switch 41 and second switch 43 are ended, the switch 47 of the control of processor 45 the 3rd and the 4th switch 49 are optionally led
It is logical, to measure the magnitude of voltage of the first current path P3 or the second current path P4.Hereby come as a example by measuring the first current path P3
Say, when the 3rd switch 47 is turned on, and the 4th switch 49 ends, processor 45 measures the first current path P3, to obtain the first electricity
The first detection voltage value of flow path P3.When the 3rd switch 47 ends, and the 4th switch 49 is turned on, the electricity of the measurement of processor 45 second
Flow path P4, to obtain the second detection voltage value of the second current path P4.Afterwards, processor 45 is according to the first detection voltage
Value, the second detection voltage value, the resistance value of resistance Rc and resistance Rd, judge the first insulation impedance Z3's and the second insulation impedance Z4
Size.
No matter that is, the resistance value of resistance Rc is the equivalent impedance of the 3rd switch 47 or the resistance of first resistor
Value, the resistance value of resistance Rc can be obtained and be stored in processor 45 in advance, and similarly the resistance value of resistance Rd is also pre-
In first obtaining and being stored in processor 45.Processor 45 obtains the first detection voltage value and second detection of the first current path P3
In magnitude of voltage, the first detection voltage value is returning for power supply 50, the first insulation impedance Z3, resistance Rc and the second insulation impedance Z4 formation
Lu Zhong, the partial pressure of the first insulation impedance Z3 parallel resistances Rc.Second detection voltage value is power supply 50, the first insulation impedance Z3, electricity
In the loop that resistance Rd and the second insulation impedance Z4 is formed, the partial pressure of the first insulation impedance Z3.Processor 45 can be by the first inspection
Survey the resistance value of magnitude of voltage, the second detection voltage value and known resistance Rc and resistance Rd, calculate the first insulation impedance Z3 and
The size of the second insulation impedance Z4.
Similarly, when first switch 41 and second switch 43 are turned on, processor 45 can also control the 3rd switch 47 and
4th switch 49 is selectively turned on, according to the magnitude of voltage of the first current path P3 or the second current path P4, to judge first
The size of insulation impedance Z3 and the second insulation impedance Z4.When first switch 41 and second switch 43 are turned on, in power supply 50, first
In the loop that insulation impedance Z3, resistance Rc, the first internal driving Re, the second insulation impedance Z4 and the second internal driving Rf are formed,
First detection voltage value is the partial pressure of first the first internal driving Re of insulation impedance Z3 parallel resistances Rc parallel connections.In power supply 50,
The loop that one insulation impedance Z3, the first internal driving Re, the second insulation impedance Z4, resistance Rd and the second internal driving Rf are formed
In, the second detection voltage value is the partial pressure of the first internal driving Re of the first insulation impedance Z3 parallel connections.
Processor 45 is by the first detection voltage value, the second detection voltage value and the resistance Rc for having stored, resistance Rd, first
The resistance value of internal driving Re and the second internal driving Rf, calculates the big of the first insulation impedance Z3 and the second insulation impedance Z4
It is small.Accordingly, electric motor car can all be switched and the 4th switched conductive for switching in before traveling or in traveling with the control of processor 45 the 3rd,
To judge the size of the first insulation impedance Z3 and the second insulation impedance Z4, the protection effect of electric motor car power system is ensured according to this.
In one embodiment, processor 45 is electrically connected to attention device.As the insulation impedance Z3 of processor 45 first and
When the impedance value of two insulation impedance Z4 is less than a predetermined threshold value, attention device sends impedance and warns extremely, for example, be shown in electronic
On the instrument board of car.Predetermined threshold value can be according to the setting of the insulation impedance demand of electric motor car, such as 200K Ω or other suitable resistances
Anti- value.
Furthermore, when first switch 41 and second switch 43 are controlled by enable signal, when switching to cut-off by conducting, processor
The switch 47 of 45 control the 3rd and the 4th switch 49 end, and according to one of the first current path P3 and the second current path P4
Magnitude of voltage and a preset voltage value, judge first switch 41 and second switch 43 one of them whether abnormal conducting.More
Specifically, when first switch 41 and second switch 43 switch to cut-off, if first switch 41 and second switch 43 normally cut
Only, during the magnitude of voltage of the first current path P3 is the loop that power supply 50, the first insulation impedance Z3 and the second insulation impedance Z4 are formed
The partial pressure of the first insulation impedance Z3.When first switch 41 and one of them the abnormal conducting of second switch 43, the first electric current road
The magnitude of voltage of footpath P3 can be different from magnitude of voltage during normal cut-off.
For example, when 41 abnormal conducting of first switch, in power supply 50, the first insulation impedance Z3, the first inside resistance
In the loop that anti-Re and the second insulation impedance Z4 are formed, the magnitude of voltage of the first current path P3 is the first insulation impedance Z3 parallel connections the
The partial pressure of one internal driving Re.When 43 abnormal conducting of second switch, the magnitude of voltage of the first current path P3 is power supply 50, the
The partial pressure of the first insulation impedance Z3 in the loop that one insulation impedance Z3, the second insulation impedance Z4 and the second internal driving Rf are formed.
In other words, when 41 abnormal conducting of first switch, when the magnitude of voltage of the first current path P3 is less than normal cut-off
The magnitude of voltage of the first current path P3.When 43 abnormal conducting of second switch, the magnitude of voltage of the first current path P3 is more than just
The magnitude of voltage of the first current path P3 when often ending.Therefore, the magnitude of voltage of the first current path P3 is used as one during normally ending
Preset voltage value, when processor 45 judges first switch 41 and one of them the abnormal conducting of second switch 43, processor 45
Compare the size of the first current path P3 magnitudes of voltage and preset voltage value, can according to this judge that first switch 41 occurs abnormal
There is abnormal conducting in conducting or second switch 43.
In the present embodiment, the situation of abnormal conducting can be first switch or second switch breaks down, welding or
Other situations.Additionally, compare the first current path P3 magnitudes of voltage and preset voltage value in the present embodiment, in other embodiment
In, the magnitude of voltage and other preset voltage value of the second current path P4 can also be compared, or be to compare the first electricity together
Flow path P3 and the second current path P4 come judge first switch 41 occur it is abnormal conducting or second switch 43 occur not just
Often conducting, the present embodiment refuses limitation.
Please with reference to Fig. 3, Fig. 3 is the predetermined voltage waveform and virtual voltage ripple according to depicted in one embodiment of the invention
The schematic diagram of shape.As illustrated, the preset voltage value in previous embodiment can also be predeterminated voltage as shown in phantom in Figure 3
Waveform.That is, when first switch 41 and second switch 43 switch to cut-off, if first switch 41 and second switch 43 are just
Often cut-off, the switch 47 of the control of processor 45 the 3rd ends, and when the 4th switch 49 is turned on, the voltage of the first current path P3 can be such as the
Shown in dotted line in one interval Int1.The switch 47 of the control of processor 45 the 3rd ends, when the 4th switch 49 ends, the first electric current road
The voltage of footpath P3 can be as shown in the dotted line in second interval Int2.The switch 47 of the control of processor 45 the 3rd is turned on, the 4th switch 49
During cut-off, the voltage of the first current path P3 can be as shown in the dotted line in 3rd interval Int3.
When first switch 41 and the abnormal conducting of second switch 43, and the switch 47 of the control of processor 45 the 3rd end, the 4th
It is shown in solid in the voltage meeting such as first interval Int1 of the first current path P3 when switch 49 is turned on.When the He of first switch 41
The abnormal conducting of second switch 43, and the cut-off of the 3rd switch of the control of processor 45 47, when the 4th switch 49 ends, the first electric current road
It is shown in solid in the voltage meeting such as second interval Int2 of footpath P3.When first switch 41 and the abnormal conducting of second switch 43, and
The switch 47 of the control of processor 45 the 3rd is turned on, and when the 4th switch 49 ends, the voltage of the first current path P3 can be such as 3rd interval
It is shown in solid in Int3.Accordingly, processor 45 can be according to virtual voltage waveform and predeterminated voltage on the first current path P3
The difference of waveform, judge first switch 41 and second switch 43 one of them whether abnormal conducting.Also, as foregoing,
Processor 45 can also be higher or lower than predetermined voltage waveform voltage level according to the voltage level of virtual voltage waveform, sentence according to this
Disconnected is that first switch 41 occurs abnormal conducting or second switch 43 occurs abnormal conducting.
Therefore whether battery circuit breaker 40 is in addition to it may determine that the abnormal conducting of switch of inside, battery circuit breaker
40 can also be measured insulaion resistance in real time before electric motor car traveling, in traveling process and after traveling.
In order to illustrate more clearly of the method that detection battery circuit breaker switchs abnormal conducting, please with reference to Fig. 2 and figure
4, Fig. 4 be according to depicted in one embodiment of the invention measurement insulation impedance method the step of flow chart.As illustrated, in step
In rapid S701, according to the conducting of enable signal-selectivity ground first switch 11 and second switch 13.In step S703, when enable letter
When number indicating first switch 11 and second switch 13 to switch to cut-off, according to the first current path P1 and the second current path P2 its
One of magnitude of voltage and preset voltage value, judge first switch 11 and second switch 13 one of them whether abnormal conducting.
In step S705, when first switch 11 and one of them the abnormal conducting of second switch 13 is judged, compare the first electric current road
The magnitude of voltage of one of footpath P1 and the second current path P2 and the size of preset voltage value, judge that first switch 11 is abnormal and lead
The logical or abnormal conducting of second switch 13.Determination methods of the present invention actually have been proposed in the implementation of foregoing description
In example, the present embodiment not repeat specification herein.
It is the survey according to depicted in one embodiment of the invention please with reference to Fig. 2 and Fig. 5, Fig. 5 in another embodiment
The step of measuring the method for insulation impedance flow chart.As illustrated, in step S801, according to enable signal-selectivity ground conducting the
One switch 41 and second switch 43.In step S803, when the switch 47 of the control of processor 45 the 3rd is turned on, the 4th switch 49 ends
When, obtain the first detection voltage value of one of the first current path P3 and the second current path P4.In step S805, when
The switch 47 of the control of processor 45 the 3rd ends, and during four switch conductions 49, obtains the first current path P3 and the second current path
The second detection voltage value of one of P4.In step S807, according to the first detection voltage value, the second detection voltage value, the
Second equivalent resistance of the first equivalent resistance of three switches 47 and the 4th switch 49, judges the first insulation impedance Z3 and second
The size of insulation impedance Z4.In step S809, when the cut-off of the 3rd switch of the control of processor 45 47, the 4th switch 49 end and cause
When energy signal designation first switch 41 and second switch 43 switch to cut-off, according to the first current path P3 and the second current path
The magnitude of voltage and preset voltage value of one of P4, judge whether one of first switch 41 and second switch 43 are abnormal and lead
It is logical.In step S811, when first switch 41 and one of them the abnormal conducting of second switch 43 is judged, compare the first electric current
The magnitude of voltage of one of the current path P4 of path P 3 and second and the size of preset voltage value, judge that first switch 41 is abnormal
Conducting or the abnormal conducting of second switch 43.Determination methods of the present invention actually have been proposed in the reality of foregoing description
In applying example, the present embodiment not repeat specification herein.
In summary it is described, the embodiment of the present invention provide a kind of abnormal conducting of detectable switch battery circuit breaker and its
Detection method, when first switch and second switch switch to cut-off by turning on, by processor detect the first current path and
Whether voltage swing on second current path judges the abnormal conducting of one of first switch or second switch, uses
Allow the battery circuit breaker can to detect the whether abnormal conducting of switch of inside, and then send the warning abnormal conducting of telling switch
Situation.In another embodiment, battery circuit breaker, in the first insulation impedance, the 4th is switched simultaneously by by the 3rd switch in parallel
The second insulation impedance is coupled to, and the switched conductive of the 3rd switch and the 4th switch is controlled by processor, with according to the first electric current
The magnitude of voltage in one of path and the second current path, judges the size of the first insulation impedance and the second insulation impedance, according to this
Ensure the protection effect of electric motor car power system.
Claims (10)
1. the battery circuit breaker of the abnormal conducting of a kind of detectable switch, it is characterised in that including：
One first switch, be arranged at the first end of a power supply and one load between one first current path, the first switch according to
Turned on according to an enable signal-selectivity；
One second switch, is arranged at one second current path between the second end of the power supply and the load, the second switch according to
Turned on according to the enable signal-selectivity；And
One processor, is electrically connected with one of first current path and second current path, when the enable signal designation
When the first switch and the second switch switch to cut-off, the processor is according to first current path and second current path
The magnitude of voltage and a preset voltage value of one of them, judge whether one of the first switch and the second switch are abnormal and lead
It is logical, and when the abnormal conducting of one of the first switch and the second switch is judged, the processor compares first electric current
The magnitude of voltage in one of path and second current path and the size of the preset voltage value, judge that the first switch is abnormal
Conducting or the abnormal conducting of the second switch.
2. the battery circuit breaker of the abnormal conducting of detectable switch as claimed in claim 1, it is characterised in that further include：
One the 3rd switch, with one first equivalent resistance, is parallel to one first insulation impedance, and first insulation impedance electrically connects
It is connected between the first end of the power supply and a reference potential end；And
One the 4th switch, with one second equivalent resistance, is parallel to one second insulation impedance, and second insulation impedance electrically connects
It is connected between the second end of the power supply and the reference potential end.
3. the battery circuit breaker of the abnormal conducting of detectable switch as claimed in claim 2, it is characterised in that the processor is more
It is used to control the 3rd switch and the 4th switch, when the 3rd switch and the 4th switch are selectively turned on, the treatment
Device according to one of first current path and second current path magnitude of voltage, judge first insulation impedance and this
The size of two insulation impedances.
4. the battery circuit breaker of the abnormal conducting of switch as claimed in claim 3 detectable, it is characterised in that open when the 3rd
Conducting is closed, during the 4th switch cut-off, the processor measures one of first current path and second current path
One first detection voltage value, when the 3rd switch cut-off, during four switch conductions, the processor measures first current path
And one second detection voltage value of one of second current path, the processor according to the first detection voltage value, this
Two detection voltage values, first equivalent resistance and second equivalent resistance, judge first insulation impedance and this are second exhausted
The size of edge impedance.
5. the battery circuit breaker of the abnormal conducting of switch as claimed in claim 2 detectable, it is characterised in that further include one the
One resistance and a second resistance, the first resistor are series at the 3rd switch, and the second resistance is series at the 4th switch.
6. the battery circuit breaker of the abnormal conducting of switch as claimed in claim 1 detectable, it is characterised in that further include one the
One internal driving and one second internal driving, first internal driving are located between the first switch and the load, and are electrically connected
Be connected between first current path and the reference potential end, second internal driving be located at the second switch and the load it
Between, and be electrically connected between second current path and the reference potential end.
7. a kind of method of the abnormal conducting of switch for detecting battery circuit breaker a, it is adaptable to battery circuit breaker, battery open circuit
Device includes a first switch and a second switch, and the first switch is arranged at one the between the first end of a power supply and a load
One current path, the second switch is arranged at one second current path between the second end of the power supply and the load, its feature
It is that the detection method includes：
According to the conducting of an enable signal-selectivity ground first switch and the second switch；
When the enable signal designation first switch and the second switch switch to cut-off, according to first current path and should
The magnitude of voltage of one of the second current path and a preset voltage value, judge one of the first switch and the second switch
Whether abnormal conducting；And
When the abnormal conducting of one of the first switch and the second switch is judged, compare first current path and this
The magnitude of voltage of one of two current paths and the size of the preset voltage value, judge the abnormal conducting of the first switch or this
The abnormal conducting of two switches.
8. the method for detecting the abnormal conducting of switch of battery circuit breaker as claimed in claim 7, it is characterised in that the battery
Breaker further includes one the 3rd switch and one the 4th switch, and the 3rd switch has one first equivalent resistance, and is parallel to one
First insulation impedance, the 4th switch has one second equivalent resistance, and is parallel to one second insulation impedance, first insulation
Impedance is electrically connected between the first end of the power supply and a reference potential end, and second insulation impedance is electrically connected at the power supply
The second end and the reference potential end between, the detection method includes：
Selectively turn on the 3rd switch and the 4th switch；And
According to the magnitude of voltage of one of first current path and second current path, judge first insulation impedance and be somebody's turn to do
The size of the second insulation impedance.
9. the method for detecting the abnormal conducting of switch of battery circuit breaker as claimed in claim 8, it is characterised in that in judgement
The step of size of first insulation impedance and second insulation impedance, includes：
When the 3rd switch conduction, the 4th switch cut-off, first current path and second current path are obtained wherein
One of one first detection voltage value；
When the 3rd switch cut-off, during four switch conductions, first current path and second current path are obtained wherein
One of one second detection voltage value；And
According to the first detection voltage value, the second detection voltage value, first equivalent resistance and second equivalent resistance,
Judge first insulation impedance and the size of second insulation impedance.
10. the method for detecting the abnormal conducting of switch of battery circuit breaker as claimed in claim 8, it is characterised in that the electricity
Pond breaker further includes a first resistor and a second resistance, and the first resistor is series at the 3rd switch, the second resistance string
Be coupled to the 4th switch, according to the first detection voltage value and the second detection voltage value, judge first insulation impedance and
In the step of size of second insulation impedance, more according to the first resistor and the resistance value of the second resistance, judge this first
The size of insulation impedance and second insulation impedance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104139890A TWI563761B (en) | 2015-11-30 | 2015-11-30 | Battery disconnecting unit capable of determining abnormal conduction of switch and determining method thereof |
| TW104139890 | 2015-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106814311A true CN106814311A (en) | 2017-06-09 |
| CN106814311B CN106814311B (en) | 2019-04-12 |
Family
ID=58227512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610644925.9A Expired - Fee Related CN106814311B (en) | 2015-11-30 | 2016-08-09 | Battery circuit breaker capable of detecting abnormal conduction of switch and detection method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106814311B (en) |
| TW (1) | TWI563761B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110785670A (en) * | 2017-12-11 | 2020-02-11 | 株式会社Lg化学 | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| CN110789351A (en) * | 2018-08-02 | 2020-02-14 | 通用汽车环球科技运作有限责任公司 | Circuit for identifying power failure source in dual-power electrical system |
| CN110869782A (en) * | 2017-12-12 | 2020-03-06 | 株式会社Lg化学 | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| CN110907837A (en) * | 2018-09-14 | 2020-03-24 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method |
| CN111033288A (en) * | 2017-09-15 | 2020-04-17 | 矢崎总业株式会社 | Abnormality detection device |
| CN111796138A (en) * | 2019-04-08 | 2020-10-20 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method |
| CN112188669A (en) * | 2019-07-04 | 2021-01-05 | 力林科技股份有限公司 | LED backlight system and LED control circuit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908719A (en) * | 2017-02-13 | 2017-06-30 | 上海蔚来汽车有限公司 | The diagnostic system of vehicle DC charge relay |
| TWI832652B (en) * | 2022-12-30 | 2024-02-11 | 致茂電子股份有限公司 | Source measure device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266277A (en) * | 2008-04-24 | 2008-09-17 | 中兴通讯股份有限公司 | DC switch protective circuit switching detection device and method |
| CN102034646A (en) * | 2009-09-25 | 2011-04-27 | 李尔公司 | Economizer for vehicle battery disconnector |
| CN102735983A (en) * | 2011-04-14 | 2012-10-17 | 矢崎总业株式会社 | Insulating state detection unit having failure detector |
| CN103105569A (en) * | 2011-11-15 | 2013-05-15 | 三菱电机株式会社 | Semiconductor device measuring voltage applied to semiconductor switch element |
| JP2013121169A (en) * | 2011-12-09 | 2013-06-17 | Hitachi Ltd | Digital output circuit having failure detection function |
| WO2016023941A1 (en) * | 2014-08-12 | 2016-02-18 | Omicron Electronics Gmbh | Test system and method for testing a circuit breaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425678B (en) * | 2007-10-30 | 2011-11-23 | 比亚迪股份有限公司 | Battery protection method and system |
| CN102967788B (en) * | 2011-09-01 | 2015-07-22 | 比亚迪股份有限公司 | Line broken detection circuit of battery and detection method thereof |
-
2015
- 2015-11-30 TW TW104139890A patent/TWI563761B/en active
-
2016
- 2016-08-09 CN CN201610644925.9A patent/CN106814311B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266277A (en) * | 2008-04-24 | 2008-09-17 | 中兴通讯股份有限公司 | DC switch protective circuit switching detection device and method |
| CN102034646A (en) * | 2009-09-25 | 2011-04-27 | 李尔公司 | Economizer for vehicle battery disconnector |
| CN102735983A (en) * | 2011-04-14 | 2012-10-17 | 矢崎总业株式会社 | Insulating state detection unit having failure detector |
| CN103105569A (en) * | 2011-11-15 | 2013-05-15 | 三菱电机株式会社 | Semiconductor device measuring voltage applied to semiconductor switch element |
| JP2013121169A (en) * | 2011-12-09 | 2013-06-17 | Hitachi Ltd | Digital output circuit having failure detection function |
| WO2016023941A1 (en) * | 2014-08-12 | 2016-02-18 | Omicron Electronics Gmbh | Test system and method for testing a circuit breaker |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111033288A (en) * | 2017-09-15 | 2020-04-17 | 矢崎总业株式会社 | Abnormality detection device |
| CN111033288B (en) * | 2017-09-15 | 2021-08-24 | 矢崎总业株式会社 | Abnormality detection device |
| CN110785670A (en) * | 2017-12-11 | 2020-02-11 | 株式会社Lg化学 | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| US11385298B2 (en) | 2017-12-11 | 2022-07-12 | Lg Energy Solution, Ltd. | Apparatus and method for diagnosing positive electrode contactor of battery pack |
| US11169210B2 (en) | 2017-12-12 | 2021-11-09 | Lg Chem, Ltd. | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| CN110869782A (en) * | 2017-12-12 | 2020-03-06 | 株式会社Lg化学 | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| CN110869782B (en) * | 2017-12-12 | 2022-02-08 | 株式会社Lg化学 | Apparatus and method for diagnosing negative electrode contactor of battery pack |
| CN110789351A (en) * | 2018-08-02 | 2020-02-14 | 通用汽车环球科技运作有限责任公司 | Circuit for identifying power failure source in dual-power electrical system |
| CN110789351B (en) * | 2018-08-02 | 2022-11-29 | 通用汽车环球科技运作有限责任公司 | Circuit for identifying power failure source in dual-power electrical system |
| CN110907837A (en) * | 2018-09-14 | 2020-03-24 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method |
| CN111796138B (en) * | 2019-04-08 | 2021-10-08 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method |
| CN111796138A (en) * | 2019-04-08 | 2020-10-20 | 宁德时代新能源科技股份有限公司 | Detection circuit and detection method |
| CN112188669A (en) * | 2019-07-04 | 2021-01-05 | 力林科技股份有限公司 | LED backlight system and LED control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI563761B (en) | 2016-12-21 |
| CN106814311B (en) | 2019-04-12 |
| TW201719998A (en) | 2017-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106814311A (en) | Battery circuit breaker capable of detecting abnormal conduction of switch and detection method thereof | |
| JP5972972B2 (en) | DC power supply equipment | |
| CN105486923B (en) | Bus leakage resistance estimation for electrical isolation testing and diagnostics | |
| EP2219042B1 (en) | Fault detection method for detecting leakage paths between power sources and chassis | |
| CN104890525B (en) | Capacitor precharge and capacitance/resistance measurement in driving system for electric vehicles | |
| CN105137336B (en) | Detect the diagnostic method of electric automobile high-voltage relay failure | |
| KR101470553B1 (en) | Apparatus and method for measuring isolation resistance of battery | |
| CN103250061B (en) | Insulation resistance measurement circuit having self-est function without generating leakage current | |
| US9244108B2 (en) | Device for detecting the insulation resistance of a high voltage battery system | |
| CN104950174B (en) | Diagnosis method for contactor resistance fault | |
| TW200700256A (en) | Battery pack management method for hev & ev | |
| JP2013140162A (en) | Insulation resistance measurement circuit | |
| CN108490302A (en) | ground fault detector | |
| US20110006777A1 (en) | Electrical leak detecting apparatus for an electric vehicle | |
| JP2009081964A (en) | Power supply system for vehicle | |
| CN103399571B (en) | For pick-up unit and the method for electric vehicle motor controller high tension loop | |
| CN105522929B (en) | Method and apparatus for detecting vehicle leakage | |
| JP2008139249A (en) | Leakage current detecting method for electric vehicle | |
| JP6054000B2 (en) | System and method for determining insulation resistance of battery pack | |
| JP6369407B2 (en) | Failure detection system | |
| JP5382813B2 (en) | Earth leakage detector | |
| CN102646960A (en) | Battery pack primary loop interface protection circuit and protection method | |
| CN104053568B (en) | For monitoring method and the equipment of high-tension unit | |
| KR20210002971A (en) | Device for ground fault detection of electric car charger and method for the same | |
| WO2014034153A1 (en) | Electrical leak detection circuit, battery circuit board, and battery power source device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190412 Termination date: 20210809 |