CN102455402B - Rectifier bridge detector - Google Patents
Rectifier bridge detector Download PDFInfo
- Publication number
- CN102455402B CN102455402B CN201010530174.0A CN201010530174A CN102455402B CN 102455402 B CN102455402 B CN 102455402B CN 201010530174 A CN201010530174 A CN 201010530174A CN 102455402 B CN102455402 B CN 102455402B
- Authority
- CN
- China
- Prior art keywords
- diode
- voltage
- current
- rectifier bridge
- detecting unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a rectifier bridge detector. A rectifier bridge comprises at least two rectification branch circuits connected in parallel, a detection unit and a control unit; each rectification branch circuit comprises two diodes connected in series; the detection unit is used for detecting the current flowing through each diode of each rectification branch circuit and detecting the voltage of two ends of each diode of each rectification branch circuit; and the control unit is used for controlling the detection and detection time sequence of the detecting unit. The rectifier bridge detector provided by the invention can be used for detecting the quality state of the rectifier bridge, and is used for evaluating the property of rectifier bridges provided by multiple rectifier bridge manufacturers.
Description
Technical field
The present invention relates to the rectifier bridge of AC generator for vehicle, particularly rectifier bridge detector.
Background technology
Generator is the main power source of automobile, for the vehicle-mounted consumer power supply to automobile.According to output signal classification, automobile current generator can be divided into Dyn. and alternator.Because the performance of alternator is better than Dyn., widespread use at present be alternator.Existing generator is threephase alternator, utilizes in-engine rectifier bridge that the alternating current of generator output is converted to direct current, supplies with vehicle-mounted consumer power supply.
In-engine rectifier bridge generally includes 6 commutation diodes, described 6 commutation diodes press-fit or are welded on two pole plates, the arrangement mode of the commutation diode of existing rectifier bridge inside can application reference numbers 200910025977.8 Chinese invention patent application.
With reference to figure 1, it is the electrical block diagram of existing rectifier bridge.Existing rectifier bridge 10 generally includes 3 rectification branch roads in parallel, and each rectification branch road comprises the one or two utmost point 14 pipe and the second diodes 15 of series connection, and wherein the positive pole of the negative pole of the first diode 14 and the second diode 15 is electrically connected to, as alternating current input end 13; The positive pole of the first diode 14 of each rectification branch road is electrically connected to, and the negative electricity of the second diode 15 of each rectification branch road connects.The first diode 14 of each rectification branch road and the second diode 15 alternate conduction, realize the alternating current of input carried out to rectification.The alternating current output terminal 13 of described rectifier bridge 10 is electrically connected to automobile current generator 16, receives the alternating current from generator 16.The negative pole of the positive pole of the first diode 14 of each rectification branch road of described rectifier bridge 10 and the second diode 15 of each rectification branch road is electrically connected to vehicle-mounted consumer 17, for the direct current of rectifier bridge 10 outputs is offered to vehicle-mounted consumer 17.
According to actual conditions, existing rectifier bridge can also comprise 2 booster diodes, respectively the 3rd diode and the 4th diode, the positive pole of the negative pole of described the 3rd diode and the 4th diode is electrically connected to, the positive pole of the 3rd diode is parallel to the positive pole of the first diode of each rectification branch road, the negative pole of the 4th diode is parallel to the negative pole of the second diode of each rectification branch road, and described booster diode, for auxiliary rectifier diode operation, improves the reliability of rectifier bridge.
Existing in-engine rectifier bridge utilizes commutation diode turn-on and turn-off to carry out rectification, output direct current.Because commutation diode needs turn-on and turn-off repeatedly, to continue to export direct current, thus the impact that need to repeatedly bear operating voltage and working current of commutation diode.If it is bad that commutation diode bears the impact capacity of operating voltage and working current repeatedly, may cause commutation diode to lose efficacy (short circuit or short circuit), thereby rectifier bridge cannot work, cannot be to vehicle-mounted consumer power supply.
Before rectifier bridge and generator assembling, need to guarantee whether the performance of rectifier bridge meets the requirements, i.e. whether the performance of the commutation diode withstand voltage of rectifier bridge impact and rush of current corresponds to actual needs.Because rectifier bridge Shi You rectifier bridge manufacturer in generator offers generator manufacture business, by generator, manufacture business and assemble in generator, therefore, need generator manufacture business to test rectifier bridge.
And existing generator manufacture business lacks rectifier bridge detector and simple and effective detection method, make the undesirable rectifier bridge of partial properties also be assembled to generator, affect the quality of generator, affect user's use.When facing Duo Jia rectifier bridge supplier, generator is manufactured business also because there is no rectifier bridge device for detecting performance and simple and effective detection method, and the performance of the rectifier bridge that cannot provide each rectifier bridge supplier is assessed.
Therefore, need a kind of simple and effective rectifier bridge detector, can detect the ability that rectifier bridge withstand voltage is impacted and withstand voltage is impacted.
Summary of the invention
The problem that the present invention solves provides a kind of rectifier bridge detector, can detect the ability that rectifier bridge withstand voltage is impacted and withstand voltage is impacted.
For addressing the above problem, the invention provides a kind of rectifier bridge detector, described rectifier bridge comprises at least two rectification branch roads in parallel, each rectification branch road comprises two diodes of series connection, also comprises:
Detecting unit, for detection of the size and the size that detects each diode both end voltage of each rectification branch road that flow through each diode current of each rectification branch road;
Control module, for controlling the detection of detecting unit and detecting sequential.
Alternatively, described each rectification branch road comprise the first diode and the second diode, the negative pole of described the first diode is electrically connected to the positive pole of the second diode;
Described detecting unit comprises current detecting unit, and the quantity of described current detecting unit is corresponding with the rectification branch road quantity of described rectifier bridge; Described control module is controlled the current detecting unit corresponding electric current that detects the first diode that flows through different rectification branch roads simultaneously, described control module is controlled the current detecting unit corresponding electric current that detects the second diode that flows through different rectification branch roads simultaneously, and described control module is controlled current detecting unit and alternately detected and flow through the electric current of the first diode and the electric current of the second diode.
Alternatively, described detecting unit also comprises voltage detection unit, described voltage detection unit comprises the first voltage detection unit, voltage for detection of the first diode two ends of all rectification branch roads, described voltage detection unit also comprises second voltage detecting unit, for detection of the voltage at the second diode two ends of all rectification branch roads, described the first voltage detection unit is different with second voltage detecting unit;
After described current detecting unit detects the electric current step of the first diode that flows through different rectification branch roads, described the first voltage detection unit detects the voltage at the first diode two ends of different rectification branch roads successively; After described current detecting unit detects the electric current step of the second diode that flows through different rectification branch roads, described second voltage detecting unit detects the voltage at the second diode two ends of different rectification branch roads successively.
Alternatively, described detecting unit also comprises the first diode selection unit, and described control module is by choosing current detecting unit and the detection of the first voltage detection unit to all the first diodes described in the first diode selection unit controls; Described detecting unit also comprises the second diode selection unit, and described control module is by choosing described in the second diode selection unit controls current detecting unit and second voltage detecting unit to all the second diode detection.
Alternatively, described the first diode selection unit comprises the first current branch switch and the first main line switch, described first quantity of current branch switch and the quantity of current detecting unit are corresponding, and from the first diode corresponding series connection successively of different current detecting units and different rectification branch roads; Described the first main line switch is connected with the positive pole of the first diode of all rectification branch roads; Described the second diode selection unit comprises the second current branch switch and the second main line switch, described second quantity of current branch switch and the quantity of current detecting unit are corresponding, and from the second diode corresponding series connection successively of different current detecting units and different rectification branch roads; Described the second main line switch is connected with the negative pole of the second diode of all rectification branch roads.
Alternatively, described the first diode selection unit also comprises the first voltage branch switch, the quantity of described the first voltage branch switch is corresponding with the quantity of the rectification branch road of rectifier bridge, the first all voltage branch switchs is all in series with described the first voltage detection unit, and corresponding with the first diode in parallel after series connection; Described the second diode selection unit comprises second voltage branch switch, the quantity of described second voltage branch switch is corresponding with the quantity of the rectification branch road of rectifier bridge, all second voltage branch switchs are all in series with described second voltage detecting unit, and corresponding with the second diode in parallel after series connection.
Alternatively, described control module is programmable logic controller (PLC).
Alternatively, described the first current branch switch and the first main line switch are the normally opened contact of the first relay.
Alternatively, described the first relay pack vinculum circle, the coil of described the first relay receives the first gating signal from programmable logic controller (PLC), and under the control of described the first gating signal, described the first current branch switch and the first main line switch are simultaneously closed.
Alternatively, described the second current branch switch and the second main line switch are the normally opened contact of the second relay.
Alternatively, described the second relay pack vinculum circle, the coil of described the second relay receives the second gating signal from programmable logic controller (PLC), and under the control of described the second gating signal, described the second current branch switch and the second main line switch are simultaneously closed.
Alternatively, described detecting unit also comprises direct voltage source, as the size of each diode current at each rectification branch road of detection and the large power supply as a child that detects each diode both end voltage of each rectification branch road, the voltage of described direct voltage source is greater than the forward voltage of diode, be less than the peak value of alternating current voltage, the voltage of input when described alternating current voltage is worked for arranging bridge.
Compared with prior art, the present invention has the following advantages: by adding detecting unit to detect the size of each diode current of each rectification branch road and the size of each diode both end voltage, and whether and detect sequential the detection by access control unit controls detecting unit, state when can simulate rectifier bridge real work like this, comprise conduction voltage drop and On current and conducting number of times, whether qualifiedly can accurately test rectifier bridge, meet actual needs.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of existing rectifier bridge.
Fig. 2 is the rectifier bridge detector modular structure schematic diagram of one embodiment of the invention.
Fig. 3 is the modular structure schematic diagram of described the first diode selection unit of the present invention and the second diode selection unit.
Fig. 4 is the rectifier bridge detector electrical block diagram of one embodiment of the invention.
Embodiment
Inventor's discovery, in existing Automotive Industry Chain, the assembling of the manufacture of diode, the manufacture of rectifier bridge and generator is to be completed by different manufacturers.Diode manufacturer provides diode to rectifier bridge manufacturer, and rectifier bridge manufacturer is assembled into diode after rectifier bridge, offers generator manufacture business, manufactures business rectifier bridge and generator are assembled by generator.Generator is manufactured business and is lacked detection rectifier bridge detector and relevant detection method, makes part rectifier bridge off quality may be assembled to engine, affects product quality.Meanwhile, owing to lacking the apparatus and method of necessary detection rectifier bridge performance, generator is manufactured business and cannot be assessed the performance of the rectifier bridge providing of each rectifier bridge manufacturer.
The invention provides a kind of pick-up unit of rectifier bridge, described rectifier bridge comprises at least two rectification branch roads in parallel, and each rectification branch road comprises two diodes of series connection, also comprises:
Detecting unit, for detection of the size and the size that detects each diode both end voltage of each rectification branch road that flow through each diode current of each rectification branch road;
Control module, for controlling the detection of detecting unit and detecting sequential.
Below in conjunction with specific embodiment, technical scheme of the present invention is described in detail.
Please refer to Fig. 2, is the rectifier bridge detector modular structure schematic diagram of one embodiment of the invention.
Described rectifier bridge 10 comprises at least two rectification branch roads in parallel, and each rectification branch road comprises two diodes of series connection;
Detecting unit 20 is for to flowing through size and the size that detects each diode both end voltage of each rectification branch road of each diode current of each rectification branch road;
Control module 30, for controlling the detection of detecting unit 20 and detecting sequential.
Particularly, as an embodiment, described rectifier bridge 10 is three-phase commutation bridge.Described rectifier bridge 10 comprises 3 rectification branch roads in parallel, each rectification branch road comprises the first diode 14 and the second diode 15, the negative pole of described the first diode 14 is electrically connected to the positive pole of the second diode 15, the positive pole of the negative pole of the first diode 14 of each rectification branch road and the second diode 15 is electrically connected to, as alternating current input end 13, in when work (during rectification), be generally used for input from the alternating current of automobile current generator.
Described rectification branch circuit parallel connection specifically refers to that the positive pole of each rectification branch road the first diode 14 of rectifier bridge 10 is electrically connected to; The negative electricity of the second diode 15 of each rectification branch road of rectifier bridge 10 connects.When being applied to automobile current generator rectification, described 3 rectification branch roads carry out rectification to the alternating current of tackling from automobile current generator respectively, and the principle of rectification, as those skilled in the art's known technology, does not elaborate at this.
Inventor finds, due to the first diode 14 of each rectification branch road of rectifier bridge 10 and the second diode 15 alternate conduction and shutoff when the work, when conducting rush of current and voltge surge in the situation that, described the first diode 14 and the second diode 15 be the internal short-circuit or open circuit because withstand current impacts and the ability of voltge surge is inadequate easily.The present inventor proposes, when test, at each rectification branch road first diode 14 and the second diode 15 two ends, alternately apply forward voltage, make the first diode 14 and the second diode 15 alternate conduction and shutoff, simulation the first diode 14 and the second diode 15 duties.
Therefore, rectifier bridge detector of the present invention also comprises control module 30, while being used for according to rectifier bridge 10 work, alternate conduction situation is controlled the detection of detecting unit and detects sequential, state when can simulate rectifier bridge real work like this, comprise conduction voltage drop and On current and conducting number of times, whether qualifiedly can accurately test rectifier bridge, meet actual needs.
Described rectifier bridge detector also comprises direct voltage source 21, for detecting the size of each diode current of each rectification branch road and the large power supply as a child that detects each diode both end voltage of each rectification branch road, the voltage swing of described direct voltage source is alternating voltage peak 30～60%.
The situation of alternating current voltage when particularly, described direct voltage source 21 its magnitudes of voltage are according to rectifier bridge 10 work arranges.Common described magnitude of voltage should be greater than the forward voltage of diode, is less than the peak value of alternating current voltage, in order to avoid DC voltage is crossed senior general's diode, burns out.
As an embodiment, the voltage of direct voltage source 21 can be 30～60% of alternating voltage peak, and for example, alternating current voltage peak value is 12v, and the magnitude of voltage of direct voltage source 21 is 4～5v.
Described detecting unit 20 is for detection of flowing through each diode current size of each rectification branch road and the size that detects each diode both end voltage of each rectification branch road.If it is non-vanishing that the electric current of a certain diode is flow through in detecting unit 20 detections, but diode both end voltage is zero, illustrates that this diode is short-circuited; If it is zero that the electric current of a certain diode is flow through in detecting unit 20 detections, but the voltage at diode two ends is supply voltage, illustrates that this diode opens circuit; If detecting unit detection is flow through, the electric current of a certain diode is non-vanishing, and the voltage at diode two ends is non-vanishing, just illustrates that this diode is for the state of normal (can work).
Described detecting unit 20 comprises current detecting unit 225 and voltage detection unit, the quantity of described current detecting unit 225 is corresponding with the rectification branch road quantity of described rectifier bridge 10, and described current detecting unit 225 is for detecting and flow through the first diode 14 of different rectification branch roads and the electric current of the second diode 15 respectively.Particularly, described control module 30 is controlled the current detecting unit 225 corresponding electric current that detects the first diode 14 that flows through different rectification branch roads simultaneously, and described control module 30 is controlled the current detecting unit 225 corresponding electric current that detects the second diode 15 that flows through different rectification branch roads simultaneously.Described control module 30 is controlled current detecting unit 225 and is alternately detected and flow through the electric current of the first diode 14 and the electric current of the second diode 15.
Described voltage detection unit comprises the first voltage detection unit 226 and second voltage detecting unit 227, described the first voltage detection unit 226 is for detection of the first diode 14 both end voltage sizes that flow through each rectification branch road, described second voltage detecting unit 227 is for detection of the second diode 15 both end voltage sizes that flow through each rectification branch road, described the first voltage detection unit 226 and second voltage detecting unit 227 differences.
After described current detecting unit 225 detects the electric current step of the first diode 14 that flows through different rectification branch roads, described the first voltage detection unit 226 detects the voltage at the first diode 14 two ends of different rectification branch roads successively; After described current detecting unit 225 detects the electric current step of the second diode 15 that flows through different rectification branch roads, described second voltage detecting unit 227 detects the voltage at the second diode 15 two ends of different rectification branch roads successively.
Described detecting unit also comprises the first diode selection unit and the second diode selection unit, the modular structure of described the first diode selection unit and the second diode selection unit please refer to Fig. 3, and described control module 30 is by choosing the first diode selection unit 22 to control the detection of described current detecting unit 225 and the first voltage detection unit 226; Described control module 30 is by choosing the second diode selection unit 23 to control the detection of described current detecting unit 225 and second voltage detecting unit 227, and described control module 30 is alternately chosen the first diode selection unit 22 and the second diode selection unit 23.
Further, described the first diode selection unit 22 comprises the first current branch switch 223 and the first main line switch 221, the quantity of described the first current branch switch 223 is corresponding with the quantity of current detecting unit 225, and from the first diode corresponding series connection successively of different current detecting units 225 and different rectification branch roads; Described the first main line switch 221 is connected with the positive pole of the first diode of all rectification branch roads; Described the second diode selection unit 23 comprises the second current branch switch 224 and the second main line switch 204, the quantity of described the second current branch switch 224 is corresponding with the quantity of current detecting unit 225, and from the second diode corresponding series connection successively of different current detecting units 225 and different rectification branch roads; Described the second main line switch 204 is connected with the negative pole of the second diode of all rectification branch roads.
Further, described the first diode selection unit 22 also comprises the first voltage branch switch 231, the quantity of described the first voltage branch switch 231 is corresponding with the quantity of the rectification branch road of rectifier bridge, the first all voltage branch switchs 231 is all in series with described the first voltage detection unit (not shown), and corresponding with described the first diode in parallel after series connection; Described the second diode selection unit 227 comprises second voltage branch switch 230, the quantity of described second voltage branch switch 230 is corresponding with the quantity of the rectification branch road of rectifier bridge, all second voltage branch switchs 230 are all in series with described second voltage detecting unit (not shown), and corresponding with described the second diode in parallel after series connection.
The present invention gives the embodiment of a rectifier bridge detector electrical block diagram, specifically please refer to Fig. 4.Comprise:
Rectifier bridge 10 is three-phase commutation bridge.Described rectifier bridge 10 comprises 3 rectification branch roads in parallel, and each rectification branch road comprises the first diode 14 and the second diode 15, and described the first diode 14 negative poles are electrically connected to the positive pole of the second diode 15; Wherein the negative electricity of 106,3 second diodes 15 of anodal common port of the positive pole of 3 the first diodes 14 electrical connection formation rectifier bridge 10 is connected to form the negative pole common port 105 of rectifier bridge 10; The positive pole of the negative pole of the first diode 14 of each rectification branch road and the second diode 15 is electrically connected to becomes alternating current input end 13, and described alternating current input end 13 receives the three-phase alternating current from generator when rectification.
Rectifier bridge detector comprises detecting unit 20, control module 30 and direct voltage source 21, simultaneously in order to limit the electric current that flows through diode, conventionally, also comprise load, when described load forms loop for connecting with diode at direct voltage source 21, the electric current of diode is flow through in restriction, and simulating diode bears the situation of rush of current, also avoid diode and direct voltage source 21 directly to connect, diode is burnt out.
Described load further comprises the first resistance 233 and the second resistance 232.Wherein the first resistance 233 forms the first conducting loop for connecting with the first diode 14, direct voltage source 21, and described the second resistance 232 forms the second conducting loop for connecting with the second diode 15 and direct voltage source 21.
Particularly, described detecting unit 20 comprises current detecting unit 225, and described current detecting unit 225 is reometer, and the branch road quantity of described rectifier bridge is 3, and therefore, the quantity of current detecting unit 225 is 3.
Described detecting unit 20 also comprises voltage detection unit, described voltage detection unit comprises the first voltage detection unit 226 and second voltage detecting unit 227, described the first voltage detection unit 226 and second voltage detecting unit 227 are voltage table, and the quantity of described the first voltage detection unit 226, second voltage detecting unit 227 is 1.
Described detecting unit 20 also comprises the first diode selection unit and the second diode selection unit.Described the first diode selection unit comprises the first voltage branch switch 231, the first current branch switch 223 and the first main line switch 221.
Particularly, described the first voltage branch switch 231 is common contactor, when measuring, by operator, according to measuring needs, is disconnected and closed operation.In the present embodiment, the quantity of the branch road of described rectifier bridge is 3, and accordingly, the first voltage branch switch 231 is also 3; Described the first current branch switch 223 is contactor.In the present embodiment, the quantity of the branch road of described rectifier bridge is 3, and therefore, the first current branch switch 223 is also 3; Described the first main line switch 221 is also contactor; Described the first current branch switch 223 and described the first main line switch 221 conducting simultaneously or shutoff under the control of control module 30, as the preferred embodiments of the present invention, described the first current branch switch 223 and the first main line switch 221 are the normally opened contact of the first relay; As another embodiment of the present invention, described the first current branch switch 223 and the first main line switch 221 can also be transistor.
Wherein, the positive pole of direct voltage source 21 is electrically connected to one end of the first main line switch 221, the other end of described the first main line switch 221 is electrically connected to the anodal common port 106 of three-phase commutation bridge, three the first diode 14 negative poles of described three-phase commutation bridge are corresponding one end that is electrically connected to three current detecting units 225 respectively, the other end of three current detecting units 225 is corresponding one end that is electrically connected to three the first current branch switches 223 respectively, the other end of three the first current branch switches 223 is connected to form common port, and be electrically connected to one end of the first resistance 233, the other end of the first resistance 233 is electrically connected to the negative pole of direct voltage source 21, form series loop.
One end of described the first voltage detection unit 226 is electrically connected to the other end of described the first main line switch 221, one end of described three the first voltage branch switchs 231 is connected to form common port, and be electrically connected to the other end of described the first voltage detection unit 226, the other end of described three the first voltage branch switchs 231 is the corresponding other end that is electrically connected to three current detecting units 225 respectively, and voltage table is connected in parallel by three the first voltage branch switchs 231 and three the first diodes 14 formation of described three-phase commutation bridge.
Described the second diode selection unit comprises second voltage branch switch 230, the second current branch switch 224 and the second main line switch 204.
Particularly, described second voltage branch switch 230 is common contactor, when measuring, by operator, according to measuring needs, is disconnected and closed operation.In the present embodiment, the quantity of the branch road of described rectifier bridge is 3, and therefore, second voltage branch switch 230 is also 3; The second current branch switch 224 is contactor, and in the present embodiment, the quantity of the branch road of described rectifier bridge is 3, and therefore, the second current branch switch 224 is also 3; The second main line switch 204 is also contactor; Described the second current branch switch 224 and the second main line switch 204 be conducting simultaneously or shutoff under the control of control module 30, as the preferred embodiments of the present invention, described the second current branch switch 224 and the second main line switch 204 are the normally opened contact of the second relay; As another embodiment of the present invention, described the second current branch switch 224 and the second main line switch 204 can also be transistor.
Wherein, the negative electricity of direct voltage source 21 is connected to one end of the second main line switch 204, the other end of described the second main line switch 204 is electrically connected to the negative pole common port 105 of three-phase commutation bridge, three the second diode 15 positive poles of described three-phase commutation bridge are corresponding one end that is electrically connected to three current detecting units 225 respectively, the other end of three current detecting units 225 is corresponding one end that is electrically connected to three the second current branch switches 224 respectively, the other end of three the second current branch switches 224 is connected to form common port, and be electrically connected to one end of the second resistance 232, the other end of the second resistance 232 is electrically connected to the positive pole of direct voltage source 21, form series loop.
One end of described second voltage detecting unit 227 is electrically connected to the other end of described the second main line switch 204, one end of the second voltage branch switch 230 of described three is connected to form common port, and be electrically connected to the other end of described second voltage detecting unit 227, the other end of the second voltage branch switch 230 of described three is the corresponding other end that is electrically connected to three current detecting units 225 respectively, makes voltage table pass through three second voltage branch switchs 230 to form and downlink connection with three the second diodes 15 described three-phase commutation bridge.
As an embodiment, described control module 30 comprises programmable logic controller (PLC) (PLC), the coil 31 of first relay corresponding with the normally opened contact of the first relay, the coil 32 of second relay corresponding with the normally opened contact of the second relay, described programmable logic controller (PLC) has the first output terminal and the second output terminal, described the first output terminal is exported the coil 31 of the first gating signal to the first relay, described the second output terminal is exported the coil 32 of the second gating signal signal to the second relay, and described the first output terminal and the second output terminal are alternately exported the coil of the first gating signal and the second gating signal to the first relay and the second relay.When the coil 31 of the first relay receives the first gating signal from programmable logic controller (PLC) 30, described the first current branch switch 223 and the first main line switch 221 closures.When the coil 32 of the second relay receives the second gating signal from programmable logic controller (PLC) 30, described the second current branch switch 224 and the second main line switch 204 closures.
Understand for convenience the present invention, the first diode 14 that detects rectifier bridge 10 of take is done exemplary illustrated as example, operator is by manually by described the first voltage branch switch 231 closures corresponding to the first diode 14 with a rectification branch road, control module 30 sends control signal, by the acceptance of the coil 31 of the first relay, the control signal of sending when control module 30 is gating, the normally opened contact of the first relay is closed, i.e. the first current branch switch 223 and the first main line switch 221 closures, now, direct voltage source 21, the first main line switch 221, the first diode 14, current detecting unit 225, the first current branch switch 223 and the first resistance 233 form closed-loop path, current detecting unit 225 detects the electric current of the first diode 14 flowing through, the first voltage detection unit 226 detects and is applied to the voltage on the first diode 14, the control signal of sending when control module 30 is when closing, and above-mentioned closed-loop path disconnects, the control signal of sending by control module 30, and simulation the first diode 14 withstand currents impact and voltge surges, and obtain the withstand voltage properties of the first diode 14.
With reference to above-mentioned testing process, the present invention can detect the first diode 14 of three-phase commutation bridge rectification branch road and the second diode 15 respectively, and in a preferred embodiment of the invention, under the control signal of sending at control module 30 is controlled, can realize three-phase commutation bridge rectification branch road the first diode 14 and the second diode 15 alternate conduction, when the normally opened contact of the first relay is closed, the normally opened contact of the second relay disconnects; When the normally opened contact of the first relay disconnects, the normally opened contact of the second relay is closed.Simulation three-phase commutation bridge actual working state in automobile current generator, thus determine that whether rectifier bridge is qualified.
The rectifier bridge that rectifier bridge detector of the present invention can also provide for Dui Duojia rectifier bridge manufacturer is assessed.The parameter of the rectifier bridge that Duo Jia rectifier bridge manufacturer provides conventionally arranges unanimously, and operating voltage, working current and the serviceable life of giving tacit consent to a plurality of rectifier bridges are identical.According to the first diode of each rectification branch road of rectifier bridge and the conducting number of times of the second diode are set described serviceable life, according to conducting number of times, determine that programmable logic controller (PLC) exports the number of times of the first gating signal and the second gating signal, with described number of times, test, if all rectifier bridges are all qualified, in the situation that other test conditions are constant, increase the number of times of the first gating signal and the second gating signal, until select a qualified rectifier bridge.
To sum up, rectifier bridge detector provided by the invention is convenient, simple, meets generator and manufactures the actual needs that rectifier bridge detects in Shang He rectifier bridge manufacturing firm, can also assess, select for the rectifier bridge that rectifier bridge manufacturer is provided.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection domain of technical solution of the present invention.
Claims (11)
1. a rectifier bridge detector, rectifier bridge to be detected comprises at least two rectification branch roads in parallel, each rectification branch road comprises two diodes of series connection: the first diode and the second diode, it is characterized in that, described rectifier bridge detector comprises:
Detecting unit, for detection of the size and the size that detects each diode both end voltage of each rectification branch road that flow through each diode current of each rectification branch road, to show whether described each diode is short-circuited or opens circuit;
Control module, for controlling the detection of detecting unit and detecting sequential;
Described detecting unit comprises current detecting unit, and the quantity of described current detecting unit is corresponding with the rectification branch road quantity of described rectifier bridge; Described control module is controlled the current detecting unit corresponding electric current that detects the first diode that flows through different rectification branch roads simultaneously, described control module is controlled the current detecting unit corresponding electric current that detects the second diode that flows through different rectification branch roads simultaneously, and described control module is controlled current detecting unit and alternately detected and flow through the electric current of the first diode and the electric current of the second diode;
Described detecting unit also comprises voltage detection unit, described voltage detection unit comprises the first voltage detection unit, voltage for detection of the first diode two ends of all rectification branch roads, described voltage detection unit also comprises second voltage detecting unit, for detection of the voltage at the second diode two ends of all rectification branch roads, described the first voltage detection unit is different with second voltage detecting unit;
Described detecting unit also comprises the first diode selection unit, and described control module is by choosing current detecting unit and the detection of the first voltage detection unit to all the first diodes described in the first diode selection unit controls; Described detecting unit also comprises the second diode selection unit, and described control module is by choosing described in the second diode selection unit controls current detecting unit and second voltage detecting unit to all the second diode detection.
2. rectifier bridge detector as claimed in claim 1, is characterized in that, the negative pole of described the first diode is electrically connected to the positive pole of the second diode.
3. rectifier bridge detector as claimed in claim 2, is characterized in that,
After described current detecting unit detects the electric current step of the first diode that flows through different rectification branch roads, described the first voltage detection unit detects the voltage at the first diode two ends of different rectification branch roads successively; After described current detecting unit detects the electric current step of the second diode that flows through different rectification branch roads, described second voltage detecting unit detects the voltage at the second diode two ends of different rectification branch roads successively.
4. rectifier bridge detector as claimed in claim 3, it is characterized in that, described the first diode selection unit comprises the first current branch switch and the first main line switch, described first quantity of current branch switch and the quantity of current detecting unit are corresponding, and from the first diode corresponding series connection successively of different current detecting units and different rectification branch roads; Described the first main line switch is connected with the positive pole of the first diode of all rectification branch roads; Described the second diode selection unit comprises the second current branch switch and the second main line switch, described second quantity of current branch switch and the quantity of current detecting unit are corresponding, and from the second diode corresponding series connection successively of different current detecting units and different rectification branch roads; Described the second main line switch is connected with the negative pole of the second diode of all rectification branch roads.
5. rectifier bridge detector as claimed in claim 4, it is characterized in that, described the first diode selection unit also comprises the first voltage branch switch, the quantity of described the first voltage branch switch is corresponding with the quantity of the rectification branch road of rectifier bridge, the first all voltage branch switchs is all in series with described the first voltage detection unit, and corresponding with the first diode in parallel after series connection; Described the second diode selection unit comprises second voltage branch switch, the quantity of described second voltage branch switch is corresponding with the quantity of the rectification branch road of rectifier bridge, all second voltage branch switchs are all in series with described second voltage detecting unit, and corresponding with the second diode in parallel after series connection.
6. the rectifier bridge detector as described in any one claim in claim 1 to 5, is characterized in that, described control module is programmable logic controller (PLC).
7. rectifier bridge detector as claimed in claim 6, is characterized in that, described the first current branch switch and the first main line switch are the normally opened contact of the first relay.
8. rectifier bridge detector as claimed in claim 7, it is characterized in that, described the first relay pack vinculum circle, the coil of described the first relay receives the first gating signal from programmable logic controller (PLC), under the control of described the first gating signal, described the first current branch switch and the first main line switch are simultaneously closed.
9. rectifier bridge detector as claimed in claim 6, is characterized in that, described the second current branch switch and the second main line switch are the normally opened contact of the second relay.
10. rectifier bridge detector as claimed in claim 9, it is characterized in that, described the second relay pack vinculum circle, the coil of described the second relay receives the second gating signal from programmable logic controller (PLC), under the control of described the second gating signal, described the second current branch switch and the second main line switch are simultaneously closed.
11. rectifier bridge detectors as described in any one in claim 1～5 or 7～10, it is characterized in that, described detecting unit also comprises direct voltage source, as the size of each diode current at each rectification branch road of detection and the large power supply as a child that detects each diode both end voltage of each rectification branch road, the voltage of described direct voltage source is greater than the forward voltage of diode, be less than the peak value of alternating current voltage, the voltage of input when described alternating current voltage is rectifier bridge work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010530174.0A CN102455402B (en) | 2010-11-02 | 2010-11-02 | Rectifier bridge detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010530174.0A CN102455402B (en) | 2010-11-02 | 2010-11-02 | Rectifier bridge detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102455402A CN102455402A (en) | 2012-05-16 |
| CN102455402B true CN102455402B (en) | 2014-08-13 |
Family
ID=46038813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010530174.0A Active CN102455402B (en) | 2010-11-02 | 2010-11-02 | Rectifier bridge detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102455402B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798777B (en) * | 2012-07-31 | 2014-12-03 | 黄山市祁门新飞电子科技发展有限公司 | Test device for three-phase rectification bridge |
| CN103558477B (en) * | 2013-11-12 | 2016-05-11 | 国网冀北电力有限公司秦皇岛供电公司 | Rectifier bridge duty tester |
| CN105785196B (en) * | 2016-04-22 | 2018-08-28 | 安徽捷迅光电技术有限公司 | A kind of rectifier bridge test fixture |
| CN107411573A (en) * | 2016-05-24 | 2017-12-01 | 佛山市顺德区美的电热电器制造有限公司 | The heating control circuit of electric cooking pot and there is its electric cooking pot |
| CN111983449B (en) * | 2020-07-22 | 2021-06-11 | 西北工业大学 | Fault detection and positioning method for rotating rectifier in power generation stage of three-stage starting/generator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124714A (en) * | 1998-03-09 | 2000-09-26 | Hd Electric Company | Lightning and surge arrester test apparatus and method |
| CN101043175A (en) * | 2006-12-19 | 2007-09-26 | 重庆大学 | Three phase rectifying bridge DC side parallel type active electric power filter |
| CN201024037Y (en) * | 2007-02-02 | 2008-02-20 | 陈明海 | Electromagnet contact-free control device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003057290A (en) * | 2001-08-21 | 2003-02-26 | Nissin Electric Co Ltd | Measuring method for partial discharge of capacitor in capacitor circuit |
-
2010
- 2010-11-02 CN CN201010530174.0A patent/CN102455402B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124714A (en) * | 1998-03-09 | 2000-09-26 | Hd Electric Company | Lightning and surge arrester test apparatus and method |
| CN101043175A (en) * | 2006-12-19 | 2007-09-26 | 重庆大学 | Three phase rectifying bridge DC side parallel type active electric power filter |
| CN201024037Y (en) * | 2007-02-02 | 2008-02-20 | 陈明海 | Electromagnet contact-free control device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-57290A 2003.02.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102455402A (en) | 2012-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112513651B (en) | Method for detecting insulation faults | |
| CN105929325B (en) | Relay adhesion detection circuit and relay adhesion detection method | |
| CN102455402B (en) | Rectifier bridge detector | |
| CN104641244B (en) | For detecting and measuring the device of insulation fault | |
| CN102288923B (en) | Current transformer module testing device and method | |
| CN202393844U (en) | Power module testing device | |
| CN104569799A (en) | Apparatus and method for diagnosing malfunction of high voltage relay device | |
| CN103260934A (en) | Method and device for detecting a short-ircuit | |
| CN105372549B (en) | High-voltage load short circuit detecting system and method | |
| CN107026051A (en) | Magnetic coil drive circuit for magnetic contactor | |
| CN108550270A (en) | A kind of processing of traffic lights abnormality and retransmission method and traffic lights | |
| CN103399571A (en) | Detecting device and method applied to high-voltage circuit of electromobile motor controller | |
| CN106154145A (en) | A kind of fault test set being applied to high-tension battery contactor and fault detection method | |
| CN104459436A (en) | Short-circuit fault diagnosis method and device for battery system high-voltage load loop | |
| CN110673054B (en) | DC/DC power supply test system and aging test method of DC/DC power supply | |
| CN108152750A (en) | The battery charging and discharging parameter identification method and system of a kind of electric vehicle | |
| CN108845252A (en) | A kind of automobile fuse performance detection device | |
| CN204696641U (en) | A kind of equipment for the protection of high-tension battery using electricity system and the vehicle with this equipment | |
| CN206685314U (en) | A kind of relay with load faulty detection function | |
| CN103245869A (en) | Detecting method for integrated circuit power supply base pin short circuit judging | |
| CN111650926A (en) | Comprehensive test system for control box on cable | |
| CN203014692U (en) | Rectifying device used for inverter experiment | |
| CN109270424A (en) | Automobile air conditioner electromagnetic clutch coil freewheeling diode detection device and detection method | |
| CN106229963B (en) | A kind of silicon-controlled control circuit mostly changed to crush-cutting | |
| CN208596211U (en) | A kind of automobile fuse performance detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220228 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 201501 Shanghai city Jinshan District Fengjing Industrial Park Wanfeng Road No. 2888 Patentee before: SHANGHAI MAPLE AUTOMOBILE Co.,Ltd. Patentee before: Zhejiang Geely Holding Group Co., Ltd |