CN103427605A - Power switch device monitoring and driving circuit, multi-leg controller and electromobile - Google Patents
Power switch device monitoring and driving circuit, multi-leg controller and electromobile Download PDFInfo
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Abstract
The invention belongs to the field of transportation tool safety control and provides a power switch device monitoring and driving circuit, a multi-leg controller and an electromobile. The power switch device monitoring and driving circuit is connected with an MCU control device and a motor and comprises a plurality of monitoring and driving units which are in parallel connection. Each monitoring and driving unit comprises a plurality of power switch devices which are used for outputting driving currents to drive the motor to run according to driving control signals, a plurality of protecting modules which are connected with the power switch devices in series in a one-to-one mode and used for being disconnected when a driving current exceeds a preset value to protect the power switch devices, and a plurality of detecting modules which are used for monitoring corresponding power switch devices and outputting corresponding detection signals to control the MCU control device to adjust the driving control signals timely when any one of the power switch devices breaks down. According to the power switch device monitoring and driving circuit, the multi-leg controller and the electromobile, a controller can still work normally when a single power switch device breaks down through real-time detection of the working condition of the power switch devices, and safety performance of the electromobile is effectively improved.
Description
Technical field
The invention belongs to the vehicle safety control field, relate in particular to a kind of device for power switching monitoring drive circuit, many brachium pontis controller and electric motor car.
Background technology
Safety Redundancy, as one of key index that determines vehicle safety, is paid close attention to by people always.Present stage; the problem that has 60% electric motor car not drive causes because of controller failure; and controller failure has 70% ~ 80%, due to the damage of device for power switching, therefore, in the scheme of protection controller, detecting and protecting device for power switching is one of design focal point always.
In service in electric motor car, it is mainly because overheated and damage that device for power switching damages, even also likely occur in having the controller of overtemperature protection, temperature-detecting device is normally monitored the temperature in whole controller, and can not monitor in real time for single device for power switching, so once the unexpected transient power of single device for power switching is too high, during as the load suddenly-applied short circuit, temperature-detecting device now can immediate response, temperature-detecting device will not have the purpose of this single device for power switching of protection, when this type of situation occurs and damages device for power switching, controller is by cisco unity malfunction, cause electric motor car to stop driving, its potential safety hazard is particularly evident on vehicle flowrate Da De highway.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of device for power switching monitoring drive circuit, is intended to solve prior art and can't be monitored single device for power switching, causes the controller for electric vehicle fault to form the problem of potential safety hazard.
The embodiment of the present invention is achieved in that a kind of device for power switching monitoring drive circuit, and described circuit is connected with motor with the MCU control device, and described circuit comprises:
A plurality of monitoring driver elements, a plurality of described monitoring driver elements are connected in parallel, a plurality of control ends of a plurality of described monitoring driver elements are connected with a plurality of drivings control output end of described MCU control device respectively, a plurality of outputs of a plurality of described monitoring driver elements connect with the corresponding phase line of motor respectively, and a plurality of test sides of three described monitoring driver elements are connected with a plurality of monitoring clients of described MCU control device respectively;
Each described monitoring driver element comprises:
Some device for power switching, turn round with drive motors for the drive control signal output driving current according to described MCU control device output;
With the protection module that described quantity of power switches equates, each described protection module and corresponding one described power switching device series, for disconnecting when drive current surpasses preset value, so that described device for power switching is protected;
The detection module equated with described quantity of power switches, for corresponding device for power switching is monitored, when arbitrary device for power switching breaks down, export corresponding detection signal, to control described MCU control device, described drive control signal is adjusted in good time;
Described device for power switching comprises a plurality of upper tube power switching devices and a plurality of lower tube power switching device, each described upper tube power switching device is connected with supply voltage by corresponding protection module, the control end that the control end of each described upper tube power switching device is described monitoring driver element, the output that the output of each described upper tube power switching device is described monitoring driver element connects with the input of corresponding detection module, the output that the input of each described lower tube power switching device is described monitoring driver element connects with the input of corresponding detection module, another control end that the control end of each described lower tube power switching device is described monitoring driver element, the output of each described lower tube power switching device is by corresponding protection module ground connection, a plurality of test sides that the output of a plurality of described detection modules is described monitoring driver element.
Another purpose of the embodiment of the present invention is to provide a kind of many brachium pontis controller that adopts above-mentioned device for power switching monitoring drive circuit.
Another purpose of the embodiment of the present invention is to provide a kind of electric motor car that adopts above-mentioned many brachium pontis controller.
The embodiment of the present invention adopts in the controller of a plurality of power switch pipe parallel connections at single brachium pontis, operating mode by real-time detection power switching device, still can make the controller normal operation while making single device for power switching break down, effectively improve the security performance of electric motor car.
The accompanying drawing explanation
The device for power switching that Fig. 1 provides for the embodiment of the present invention is monitored the structure chart of drive circuit;
The device for power switching that Fig. 2 provides for the embodiment of the present invention is monitored the exemplary circuit figure of drive circuit.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention, by the operating mode of real-time detection power switching device, still can make the controller normal operation when single device for power switching breaks down, and effectively improves the security performance of electric motor car.
The device for power switching that Fig. 1 shows the embodiment of the present invention to be provided is monitored the structure of drive circuit, for convenience of explanation, only shows part related to the present invention.
As one embodiment of the invention, this device for power switching monitoring drive circuit 1 can be applied in high-power, large many brachium pontis of electric current controller and electric motor car that single brachium pontis adopts a plurality of device for power switching parallel connections, be particularly useful in the controller of electric motor car of DC brushless motor, this device for power switching monitoring drive circuit 1 is connected with motor 3 with MCU control device 2, comprising:
A plurality of monitoring driver elements, a plurality of monitoring driver elements are connected in parallel, a plurality of control ends of a plurality of monitoring driver elements are connected with a plurality of drivings control output end of MCU control device 2 respectively, a plurality of outputs of a plurality of monitoring driver elements connect with the corresponding phase line of motor 3 respectively, and a plurality of test sides of a plurality of monitoring driver elements are connected with a plurality of monitoring clients of MCU control device 2 respectively;
The embodiment of the present invention only describes for three monitoring driver elements that are applied to three phase electric machine, understandably, the embodiment of the present invention is not limited to be applied to three phase electric machine, adopts the monitoring driver element of respective numbers to get final product being applied to five-phase induction motor or other motors.
A plurality of monitoring driver elements (the first monitoring driver element 11, the second monitoring driver element 12, the 3rd monitoring driver element 13), the first monitoring driver element 11, the second monitoring driver element 12, the 3rd monitoring driver element 13 is connected in parallel, the first monitoring driver element 11, the second monitoring driver element 12, the control end of the 3rd monitoring driver element 13 is connected with a plurality of drivings control output end of MCU control device 2 respectively, the first monitoring driver element 11, the second monitoring driver element 12, the output of the 3rd monitoring driver element 13 is connected with the three-phase input end of motor 3 respectively, the first monitoring driver element 11, the second monitoring driver element 12, the test side of the 3rd monitoring driver element 13 is connected with a plurality of monitoring clients of MCU control device 2 respectively,
Each monitoring driver element comprises:
Some device for power switching, turn round with drive motors 3 for the drive control signal output driving current according to 2 outputs of MCU control device;
The protection module equated with quantity of power switches, each protection module and a corresponding power switching device series, for disconnecting when drive current surpasses preset value, so that device for power switching is protected; And
The detection module equated with quantity of power switches, for corresponding device for power switching is monitored, when arbitrary device for power switching breaks down, export corresponding detection signal, to control 2 pairs of described drive control signal of MCU control device, adjust in good time.
Device for power switching comprises a plurality of upper tube power switching devices and a plurality of lower tube power switching device, on each, the tube power switching device is connected with supply voltage by corresponding protection module, on each, the control end of tube power switching device is a control end of monitoring driver element, the output that on each, the output of tube power switching device is the monitoring driver element connects with the input of corresponding detection module, the output that the input of every tube power switching device once is the monitoring driver element connects with the input of corresponding detection module, the control end of every tube power switching device once is another control end of monitoring driver element, the output of every tube power switching device once is by corresponding protection module ground connection, the output of a plurality of detection modules is a plurality of test sides of monitoring driver element.
In embodiments of the present invention; the first monitoring driver element 11 of take is example; describe; this the first monitoring driver element 11 comprises four device for power switching, four protection modules and four detection modules; certainly; understandably, the monitoring driver element that the embodiment of the present invention provides is not limited to comprise four device for power switching, four protection modules and four detection modules.
The first monitoring driver element 11 comprises the first device for power switching 111, the second device for power switching 112, the 3rd device for power switching 113, the 4th device for power switching 114, the first protection module F11, the second protection module F12, the 3rd protection module F13, the 4th protection module F14, first detection module 115, the second detection module 116, the 3rd detection module 117, the 4th detection module 118, wherein the first device for power switching 111, the second device for power switching 112 is upper tube power switching device, the 3rd device for power switching 113, the 4th device for power switching 114 is lower tube power switching device, the first device for power switching 111, the second device for power switching 112 is respectively by the first protection module F11, the second protection module F12 is connected with supply voltage, the first device for power switching 111, the output of the second device for power switching 112 respectively with the 3rd device for power switching 113, the input of the 4th device for power switching 114 connects, the 3rd device for power switching 113, the output of the 4th device for power switching 114 is respectively by the 3rd protection module F13, the 4th protection module F14 ground connection, the first device for power switching 111, the second device for power switching 112, the 3rd device for power switching 113, the control end of the 4th device for power switching 114 is a plurality of control ends of monitoring driver element 11, the first device for power switching 111, the output of the second device for power switching 112 and the 3rd device for power switching 113, the input of the 4th device for power switching 114 respectively with first detection module 115, the second detection module 116, the 3rd detection module 117, the input of the 4th detection module 118 connects, first detection module 115, the second detection module 116, the 3rd detection module 117, the output of the 4th detection module 118 is a plurality of test sides of monitoring driver element 11.
The second monitoring driver element 12 comprises the 5th device for power switching 121, the 6th device for power switching 122, the 7th device for power switching 123, the 8th device for power switching 124, the 5th protection module F21, the 6th protection module F22, the 7th protection module F23, the 8th protection module F24, the 5th detection module 125, the 6th detection module 126, the 7th detection module 127, the 8th detection module 128, the 5th device for power switching 121 wherein, the 6th device for power switching 122 is upper tube power switching device, the 7th device for power switching 123, the 8th device for power switching 124 is lower tube power switching device, the structure of the second monitoring driver element 12 is identical with the first monitoring driver element 11, repeat no more herein.
The 3rd monitoring driver element 13 comprises the 9th device for power switching 131, the tenth device for power switching 132, the 11 device for power switching 133, the 12 device for power switching 134, the 9th protection module F31, the tenth protection module F32, the 11 protection module F33, the 12 protection module F34, the 9th detection module 135, the tenth detection module 136, the 11 detection module 137, the 12 detection module 138, the 9th device for power switching 131 wherein, the tenth device for power switching 132 is upper tube power switching device, the 11 device for power switching 133, the 12 device for power switching 134 is lower tube power switching device, the structure of the 3rd monitoring driver element 13 is identical with the first monitoring driver element 11, repeat no more herein.
In embodiments of the present invention, when electric motor car moves, the first monitoring driver element 11, the second monitoring driver element 12, the 3rd monitoring driver element 13 forms three brachium pontis, MCU control device 2 makes motor A by the switch of controlling a plurality of device for power switching, B, the C winding is switched in twos, so controller always open at every turn one road and bridge arm upper pipe and another road and bridge arm lower pipe driven, for example, if single device for power switching (the first device for power switching 111) transient power is excessive and while being about to burn out, protective device F11 fuses or fusing after the first device for power switching 111 burns out immediately, cut off this section circuit to guarantee the normal operation of controller, electric current still can be by the second device for power switching 112 circulations, controller can work.First detection module 115 corresponding device for power switching while detecting opening state in real time, the electric current vanishing that first detection module 115 inputs detect after protective device F11 fusing, now first detection module 115 sends to MCU control device 2 by detection signal, after MCU control device 2 monitors this device for power switching and breaks down, type of drive other device for power switching in parallel with it with protection will be changed, and send corresponding signal to fault suggestion device 4, fault suggestion device 4 fault different to the driver prompting according to unlike signal again, the first device for power switching fault for example, with the position of informing that driver's fault occurs, be convenient to maintenance afterwards.Temperature-detecting device 5 is for detection of temperature in whole controller, for controller integral body is carried out to overheat protector.
The embodiment of the present invention adopts in the controller of a plurality of power switch pipe parallel connections at single brachium pontis; operating mode by real-time detection power switching device; still can make the controller normal operation while making single device for power switching break down; and can realize the duplicate protection to electric motor car by existing temperature detection and the monitoring of single device for power switching, greatly strengthen the security performance of electric motor car.
The device for power switching that Fig. 2 shows the embodiment of the present invention to be provided is monitored the exemplary circuit of drive circuit, for convenience of explanation, only shows part related to the present invention.
In embodiments of the present invention; each monitoring driver element can comprise the upper tube power switching device of a plurality of parallel connections and the lower tube power switching device of a plurality of parallel connections; to guarantee when arbitrary device for power switching breaks down; in time by the protection module branch road that fuses; and realize driving by its device for power switching in parallel and control; and the quantity of upper tube power switching device parallel connection can be not equal to the quantity of lower tube power switching device parallel connection, concrete quantity can be determined according to the parameters of motor.
As one embodiment of the invention, device for power switching can be mos field effect transistor (metal oxid semiconductor, metal-oxide-semiconductor) or insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), can be also thyristor or other device for power switching.
Wherein, the input that the drain electrode of N-type metal-oxide-semiconductor is device for power switching, the output that the source electrode of N-type metal-oxide-semiconductor is device for power switching, the control end that the grid of N-type metal-oxide-semiconductor is device for power switching;
The input that the source electrode of P type metal-oxide-semiconductor is device for power switching, the output that the drain electrode of P type metal-oxide-semiconductor is device for power switching, the control end that the grid of P type metal-oxide-semiconductor is device for power switching;
The current collection of N-type raceway groove IGBT is the input of device for power switching very, and the emission of N-type raceway groove IGBT is the output of device for power switching very, the control end that the grid of N-type raceway groove IGBT is device for power switching;
The emission of P type raceway groove IGBT is the input of device for power switching very, and the current collection of P type raceway groove IGBT is the output of device for power switching very, the control end that the grid of P type raceway groove IGBT is device for power switching.
In embodiments of the present invention, upper tube power switching device is P type metal-oxide-semiconductor, the input that the source electrode of P type metal-oxide-semiconductor is upper tube power switching device, the output that the drain electrode of P type metal-oxide-semiconductor is upper tube power switching device, the control end that the grid of P type metal-oxide-semiconductor is upper tube power switching device;
Lower tube power switching device is the N-type metal-oxide-semiconductor, the input that the drain electrode of N-type metal-oxide-semiconductor is lower tube power switching device, the output that the source electrode of N-type metal-oxide-semiconductor is lower tube power switching device, the control end that the grid of N-type metal-oxide-semiconductor is lower tube power switching device.
It should be noted that, upper tube power switching device is not limited to use P type metal-oxide-semiconductor, also can use N-type metal-oxide-semiconductor or other device for power switching to realize, lower tube power switching device also is not limited to use the N-type metal-oxide-semiconductor, also can use P type metal-oxide-semiconductor or other device for power switching to realize.
As one embodiment of the invention, when the pin number of MCU control device 2 is subject in limited time, the control end of a plurality of upper tube power switching device in same monitoring driver element can be controlled to pin (output) with the same driving of MCU control device 2 and be connected realization control, the control end of a plurality of lower tube power switching devices can drive control pin (output) to be connected with MCU control device 2 other and realize controlling, for example, the control end of tube power switching device 111 on first and tube power switching device 112 on second is controlled to pin with the same driving of MCU control device 2 simultaneously to be connected, with MCU control device 2 other, drive the control pin to be connected the control end of the 3rd time tube power switching device 113 and the 4th time tube power switching device 114 simultaneously.
Upper tube power switching device for the different monitoring driver element, for example, after on the 5th in the second monitoring driver element 12, the control end of tube power switching device 121 and tube power switching device 122 on the 6th is connected, by MCU control device 2, adopting corresponding in addition driving to control pin connects, drives control.
Be appreciated that MCU control device 2 is not limited to above-mentioned connection with monitoring being connected of driver element, can adjust accordingly according to the practical application of MCU control device 2.
As one embodiment of the invention, protection module is device for fusing, for example current-limiting fuse or self-recovering type fuse.
As one embodiment of the invention, the maximum current that the fusing specification of protection module can be born according to different controller internal power switching devices is determined, and the maximum current that its rated value wants the specific power switching device to bear is little.Because the protection module rated value has error, thus in its when fusing, be carved with before device for power switching burns out and the latter two situation, but two kinds of situations all do not affect the controller normal operation.
As one embodiment of the invention, the detection module that on each, the tube power switching device is corresponding can comprise: a diode, one current-limiting resistance and a divider resistance, the input that the anode of the diode in the detection module that above the tube power switching device is corresponding is the detection module that upper tube power switching device is corresponding, one end connection of the negative electrode of the diode in should upper tube power switching device corresponding detection module and current-limiting resistance in should upper tube power switching device corresponding detection module, the output that the other end of the current-limiting resistance in the detection module that above the tube power switching device is corresponding is the detection module that upper tube power switching device is corresponding also passes through this divider resistance ground connection,
Every detection module that once the tube power switching device is corresponding can comprise: a diode and a current-limiting resistance, the input that the negative electrode of the diode in detection module corresponding to this time tube power switching device is the detection module that lower tube power switching device is corresponding, one end of the current-limiting resistance in the anode of the diode in detection module corresponding to this time tube power switching device detection module corresponding with this time tube power switching device connects, the output that the other end of the current-limiting resistance in detection module corresponding to this time tube power switching device is the detection module that lower tube power switching device is corresponding.
As one embodiment of the present invention, when the pin number of MCU control device 2 is subject to, a plurality of test sides of a plurality of detection modules to be connected to two test sides by some resistance in limited time, with a plurality of monitoring clients of MCU control device unit, be connected, specific as follows:
Each detection module comprises a diode, wherein, the input that the anode of the diode in detection module corresponding to upper tube power switching device is this detection module, the output that the negative electrode of the diode in detection module corresponding to upper tube power switching device is this detection module; The input that the negative electrode of the diode in detection module corresponding to lower tube power switching device is this detection module, the output that the anode of the diode in detection module corresponding to lower tube power switching device is this detection module;
Each monitoring driver element comprises: upper corresponding M detection module and N detection module corresponding to lower tube power switching device of tube power switching device, and M and N are the integer that is greater than 2;
And, a plurality of outputs of M detection module are connected with an end of M current-limiting resistance respectively, the other end of M current-limiting resistance is connected to the first test side, this first test side is again by a divider resistance ground connection, a plurality of outputs of N detection module are connected with an end of an other N current-limiting resistance respectively, the other end of N current-limiting resistance is connected to the second test side, and the first test side is connected with a plurality of monitoring clients of MCU control device unit with the second test side.
In embodiments of the present invention, with reference to figure 2, the first monitoring driver elements 11, comprise: with the first detection module 115 of the corresponding connection of tube power switching device 111 on first, with corresponding the second detection module 116 be connected of tube power switching device 112 on second, with the 3rd time corresponding the 3rd detection module 117 be connected of tube power switching device 113 and with the 4th time corresponding the 4th detection module 118 be connected of tube power switching device 114;
Wherein, first detection module 115 comprises diode D1, the input that the anode of diode D1 is first detection module 115, and the output that the negative electrode of diode D1 is first detection module 115 is connected with the end of current-limiting resistance R1;
The second detection module 116 comprises diode D2, the input that the anode of diode D2 is the second detection module 116, the output that the negative electrode of diode D2 is the second detection module 116 is connected with the end of current-limiting resistance R2, and the other end of current-limiting resistance R2 is connected with the other end of current-limiting resistance R1 as the first test side by divider resistance R5 ground connection;
The 3rd detection module 117 comprises diode D3, the input that the negative electrode of diode D3 is the 3rd detection module 117, and the output that the anode of diode D3 is the 3rd detection module 117 is connected with the end of current-limiting resistance R3;
The 4th detection module 118 comprises diode D4, the input that the negative electrode of diode D4 is the 4th detection module 118, the output that the anode of diode D4 is the 4th detection module 118 is connected with the end of current-limiting resistance R4, the other end of current-limiting resistance R4 is connected as the second test side with the other end of current-limiting resistance R3, and this first test side is connected with a plurality of monitoring clients of MCU control device unit 2 with the second test side.
Understandably, when the detection module in the monitoring driver element increases, corresponding current-limiting resistance should correspondingly increase.
Equally, the second monitoring driver element 12 comprises: the 5th detection module 125 of connection corresponding to tube power switching device 121 on the 5th, the 6th detection module 126 of connection corresponding to tube power switching device 122 on the 6th, with the 7th detection module 127 of the 7th time corresponding connection of tube power switching device 123 and with the 8th time corresponding the 8th detection module 128 be connected of tube power switching device 124, the 3rd monitoring driver element 13 comprises: the 9th detection module 135 of connection corresponding to tube power switching device 131 on the 9th, the tenth detection module 136 of connection corresponding to tube power switching device 132 on the tenth, with the 11 detection module 137 of the tenth corresponding connection of tube power switching device 133 once and with the 12 time corresponding the 12 detection module 138 be connected of tube power switching device 134, each detection module includes a diode, its annexation is identical with the first monitoring driver element, do not repeating herein.
It should be noted that, the output of the 5th detection module 125 and the 6th detection module 126 also is connected with the end of current-limiting resistance R1 and current-limiting resistance R2 respectively, and the output of the 9th detection module 135 and the tenth detection module 136 also is connected with the end of current-limiting resistance R1 and current-limiting resistance R2 respectively;
The output of the 7th detection module 127 and the 8th detection module 128 also is connected with the end of current-limiting resistance R3 and current-limiting resistance R4 respectively, and the output of the 11 detection module 137 and the 12 detection module 138 also is connected with the end of current-limiting resistance R3 and current-limiting resistance R4 respectively.
In embodiments of the present invention, adopt diode can prevent that in the transmission detection signal signals reverse from flowing backwards as detection module.
In embodiments of the present invention, when the pin number of MCU control device 2 is subject to the connected mode adopted in limited time, by MCU control device 2, select to drive a plurality of upper tube power switching device in a monitoring driver element to monitor a plurality of lower tube power switching device in driver element with another, when wherein arbitrary power tube device breaks down, the output end voltage of its monitoring driver element is abnormal, the detection module of corresponding connection reports to MCU control device 2 by this fault, MCU control device 2 drives order and fault feedback signal to determine the monitoring driver element broken down according to selecting, and reduction PWM value now, make electric current by remaining device for power switching within its tolerance range, to the user, pointed out simultaneously.
The embodiment of the present invention is by increasing protection module and detection module some and power switching device series, make when the transient power of arbitrary device for power switching is too high, protection module can fuse before or after it burns out, thereby disconnect this section circuit and avoid this bridgc arm short, make remaining device for power switching maintain the normal operation of controller, and the device for power switching while by detection module, detecting opening state in real time, when device for power switching breaks down, reduce immediately PWM value now by the MCU control device, make electric current by remaining device for power switching within its tolerance range, make normally working on of safety of controller, realize the duplicate protection to electric motor car by temperature detection and the monitoring of single device for power switching, greatly strengthened the security performance of electric motor car.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a device for power switching monitoring drive circuit, is characterized in that, described circuit is connected with motor with the MCU control device, and described circuit comprises:
A plurality of monitoring driver elements, a plurality of described monitoring driver elements are connected in parallel, a plurality of control ends of a plurality of described monitoring driver elements are connected with a plurality of drivings control output end of described MCU control device respectively, a plurality of outputs of a plurality of described monitoring driver elements connect with the corresponding phase line of motor respectively, and a plurality of test sides of a plurality of described monitoring driver elements are connected with a plurality of monitoring clients of described MCU control device respectively;
Each described monitoring driver element comprises:
Some device for power switching, turn round with drive motors for the drive control signal output driving current according to described MCU control device output;
With the protection module that described quantity of power switches equates, each described protection module and corresponding one described power switching device series, for disconnecting when drive current surpasses preset value, so that described device for power switching is protected;
The detection module equated with described quantity of power switches, for corresponding device for power switching is monitored, when arbitrary device for power switching breaks down, export corresponding detection signal, to control described MCU control device, described drive control signal is adjusted in good time;
Described device for power switching comprises a plurality of upper tube power switching devices and a plurality of lower tube power switching device, each described upper tube power switching device is connected with supply voltage by corresponding protection module, the control end that the control end of each described upper tube power switching device is described monitoring driver element, the output that the output of each described upper tube power switching device is described monitoring driver element connects with the input of corresponding detection module, the output that the input of each described lower tube power switching device is described monitoring driver element connects with the input of corresponding detection module, another control end that the control end of each described lower tube power switching device is described monitoring driver element, the output of each described lower tube power switching device is by corresponding protection module ground connection, a plurality of test sides that the output of a plurality of described detection modules is described monitoring driver element.
2. circuit as claimed in claim 1, is characterized in that, described device for power switching is metal-oxide-semiconductor or IGBT;
Wherein, the input that the drain electrode of N-type metal-oxide-semiconductor is described device for power switching, the output that the source electrode of N-type metal-oxide-semiconductor is described device for power switching, the control end that the grid of N-type metal-oxide-semiconductor is described device for power switching;
The input that the source electrode of P type metal-oxide-semiconductor is described device for power switching, the output that the drain electrode of P type metal-oxide-semiconductor is described device for power switching, the control end that the grid of P type metal-oxide-semiconductor is described device for power switching;
The input of the very described device for power switching of current collection of N-type raceway groove IGBT, the output of the very described device for power switching of emission of N-type raceway groove IGBT, the control end that the grid of N-type raceway groove IGBT is described device for power switching;
The input of the very described device for power switching of emission of P type raceway groove IGBT, the output of the very described device for power switching of current collection of P type raceway groove IGBT, the control end that the grid of P type raceway groove IGBT is described device for power switching.
3. circuit as claimed in claim 1, it is characterized in that, described upper tube power switching device is P type metal-oxide-semiconductor, the input that the source electrode of described P type metal-oxide-semiconductor is described upper tube power switching device, the output that the drain electrode of described P type metal-oxide-semiconductor is described upper tube power switching device, the control end that the grid of described P type metal-oxide-semiconductor is described upper tube power switching device;
Described lower tube power switching device is the N-type metal-oxide-semiconductor, the input that the drain electrode of described N-type metal-oxide-semiconductor is described lower tube power switching device, the output that the source electrode of described N-type metal-oxide-semiconductor is described lower tube power switching device, the control end that the grid of described N-type metal-oxide-semiconductor is described lower tube power switching device.
4. circuit as claimed in claim 1, is characterized in that, described protection module is device for fusing.
5. circuit as claimed in claim 1, is characterized in that, described protection module is current-limiting fuse or self-recovering type fuse.
6. circuit as claimed in claim 1, it is characterized in that, the detection module that on each, the tube power switching device is corresponding comprises: a diode, one current-limiting resistance and a divider resistance, the input that the anode of the diode in detection module corresponding to described upper tube power switching device is the detection module that upper tube power switching device is corresponding, one end of the current-limiting resistance in the negative electrode of the diode in detection module corresponding to the described upper tube power switching device detection module corresponding with described upper tube power switching device connects, the output that the other end of the current-limiting resistance in detection module corresponding to described upper tube power switching device is the detection module that upper tube power switching device is corresponding by described divider resistance ground connection,
Every detection module that once the tube power switching device is corresponding comprises: a diode and a current-limiting resistance, the input that the negative electrode of the diode in detection module corresponding to described lower tube power switching device is the detection module that lower tube power switching device is corresponding, one end of the current-limiting resistance in the anode of the diode in detection module corresponding to the described lower tube power switching device detection module corresponding with described lower tube power switching device connects, the output that the other end of the current-limiting resistance in detection module corresponding to described lower tube power switching device is the detection module that lower tube power switching device is corresponding.
7. circuit as claimed in claim 1, is characterized in that, a plurality of described test sides are connected to two test sides by some resistance, specific as follows:
Each described detection module comprises a diode, wherein, the input that the anode of the diode in detection module corresponding to upper tube power switching device is described detection module, the output that the negative electrode of the diode in detection module corresponding to upper tube power switching device is described detection module; The input that the negative electrode of the diode in detection module corresponding to lower tube power switching device is described detection module, the output that the anode of the diode in detection module corresponding to lower tube power switching device is described detection module;
Each described monitoring driver element comprises: N the described detection module that M the described detection module that upper tube power switching device is corresponding and lower tube power switching device are corresponding, and described M and N are the integer that is greater than 2;
And, a plurality of outputs of a described M detection module are connected with an end of M current-limiting resistance respectively, the other end of M described current-limiting resistance is connected to the first test side, described the first test side is again by a divider resistance ground connection, a plurality of outputs of a described N detection module are connected with an end of an other N current-limiting resistance respectively, the other end of N described current-limiting resistance is connected to the second test side, and described the first test side is connected with a plurality of monitoring clients of described MCU control device unit with described the second test side.
8. brachium pontis controller more than a kind, is characterized in that, the device for power switching monitoring drive circuit in described many brachium pontis controller is circuit as described as claim 1 to 7.
9. an electric motor car, is characterized in that, described electric motor car comprises many brachium pontis controller as claimed in claim 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210153863.3A CN103427605B (en) | 2012-05-17 | 2012-05-17 | A kind of device for power switching monitoring drive circuit, many brachium pontis controller and electric motor car |
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| CN201210153863.3A CN103427605B (en) | 2012-05-17 | 2012-05-17 | A kind of device for power switching monitoring drive circuit, many brachium pontis controller and electric motor car |
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| CN103427605B CN103427605B (en) | 2015-11-25 |
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| CN107305356A (en) * | 2016-04-22 | 2017-10-31 | 比亚迪股份有限公司 | A kind of controlling switch application circuit and its fault detect guard method |
| CN107450004A (en) * | 2017-07-31 | 2017-12-08 | 珠海格力电器股份有限公司 | Fault detection method and circuit |
| CN107534384A (en) * | 2015-04-21 | 2018-01-02 | 西门子公司 | There is the frequency converter of short circuit interrupt in half-bridge |
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| CN103427605B (en) | 2015-11-25 |
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