CN207321120U - A kind of power module - Google Patents
A kind of power module Download PDFInfo
- Publication number
- CN207321120U CN207321120U CN201721104872.8U CN201721104872U CN207321120U CN 207321120 U CN207321120 U CN 207321120U CN 201721104872 U CN201721104872 U CN 201721104872U CN 207321120 U CN207321120 U CN 207321120U
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- Prior art keywords
- circuit
- wake
- power module
- input terminal
- transformer
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Abstract
The utility model provides a kind of power module, including：Battery, on-off circuit, the first wake-up circuit, ac conversion circuit, transformer and DC converting circuit；The battery is connected with the input terminal of the on-off circuit, the output terminal of the on-off circuit is connected with the input terminal of the ac conversion circuit, the control terminal of the on-off circuit is connected with the output terminal of first wake-up circuit, first wake-up circuit controls the on-off circuit to turn on after receiving wake-up signal, and direct current is converted to alternating current by the ac conversion circuit；The output terminal of the ac conversion circuit is connected with the primary coil of the transformer, and the secondary coil of the transformer is connected with the input terminal of the DC converting circuit；The output terminal of the DC converting circuit supplies direct current to electrical appliance.Since the first wake-up circuit wakes up power module after wake-up signal is received, i.e. power module does not work when not being waken up, so effectively reduces the quiescent dissipation of power drive system.
Description
Technical field
It the utility model is related to field of switch power, more particularly to a kind of power module.
Background technology
Under the background that low-carbon economy becomes the mainstream of the times, electric automobile becomes the Main way of current development of automobile.With
Constantly advancing for electric automobile, powerful motor and controller are come out one after another, the quiescent dissipation mistake of power drive system
Become technical problem urgently to be resolved hurrily greatly.
Utility model content
The utility model provides a kind of power module, solves the problems, such as that the quiescent dissipation of existing power drive system is excessive.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of power module, including：
Battery, on-off circuit, the first wake-up circuit, ac conversion circuit, transformer and DC converting circuit；
The battery is connected with the input terminal of the on-off circuit, and the output terminal of the on-off circuit exchanges conversion with described
The input terminal of circuit is connected, and the control terminal of the on-off circuit is connected with the output terminal of first wake-up circuit, and described first
Wake-up circuit controls the on-off circuit to turn on after receiving wake-up signal, so that the battery is supplied to the ac conversion circuit
Direct current is converted to alternating current by electricity, the ac conversion circuit；
The output terminal of the ac conversion circuit is connected with the primary coil of the transformer, the secondary wire of the transformer
Circle is connected with the input terminal of the DC converting circuit, and the transformer is exported to the direct current turn after transformation is carried out to alternating current
Change circuit；
The DC converting circuit by alternating current be converted to after direct current by the output terminal of the DC converting circuit to
Electrical appliance supplies direct current.
Preferably, first wake-up circuit includes：First wake-up signal input terminal, the first optical coupled switch, the one or three pole
Pipe；
The cathode of the light emitting diode of first optical coupled switch connects power supply, and anode meets the first wake-up signal input terminal, institute
State the input terminal of the photosensitive tube of the first optical coupled switch with the cathode of battery to be connected, output terminal is through divider resistance and the first triode
Base stage is connected, and the collector of first triode is connected with the control terminal of the on-off circuit, and through divider resistance and battery
Anode be connected, the emitter of first triode is connected with the anode of battery；First optical coupled switch receives low pressure
Opened after wake-up signal, control first triode to open, wake up power module.
Preferably, the power module further includes：Second wake-up circuit；
Second wake-up circuit includes：Second wake-up signal input terminal, reverse hold-off diode, the second optical coupled switch,
Digital Signal Processing wakes up end；
Photosensitive tube of the second wake-up signal input terminal through the reversely hold-off diode and first optical coupled switch
Output terminal be connected, it is described reversely hold-off diode light emitting diode of the cathode through divider resistance Yu second optical coupled switch
Cathode be connected, the anode of the light emitting diode of second optical coupled switch is connected with the anode of the battery, second light
The input termination power of the photosensitive tube of coupling switch, output terminal wake up end with the Digital Signal Processing and are connected；
When the second wake-up signal input terminal sends high pressure wake-up signal, second optical coupled switch is opened, to described
Digital Signal Processing wakes up end and sends wake-up signal, and digital signal processing chip is received after high pressure wake-up signal to described first
Wake-up signal input terminal sends low pressure wake-up signal.
Preferably, the power module further includes：The filtering being connected between the battery and the ac conversion circuit
Circuit.
Preferably, the ac conversion circuit includes：PWM control modules and the first field-effect transistor, the PWM controls
The output port of module is connected with the grid of first field-effect transistor, the input terminal of first field-effect transistor with
The output terminal of the on-off circuit is connected, the input end grounding of first field-effect transistor；
The PWM control modules are used to export PWM ripples to control the opening and closing of first field-effect transistor so that described
Alternating current is formed in the primary coil of transformer.
Preferably, the power module further includes：Voltage feedback circuit；
The voltage feedback circuit includes：Transformer secondary coil voltage feedback circuit, transformer sampling electricity
Road；
The sampled voltage of the transformer sample circuit is sent to PWM control modules to power, the transformation
The feedback voltage of device secondary coil voltage feedback circuit is sent to PWM control modules to be compared.
Preferably, the power module further includes：Current feedback circuit, the feedback current of the current feedback circuit are sent
To PWM control modules to be compared.
Preferably, first optical coupled switch, the model TLP2301 of second optical coupled switch.
Preferably, the model of first triode：MMBT5551.
The utility model provides a kind of power module, battery, on-off circuit, the first wake-up circuit, ac conversion circuit, change
Depressor and DC converting circuit；The battery is connected with the input terminal of the on-off circuit, the output terminal of the on-off circuit with
The input terminal of the ac conversion circuit is connected, the control terminal of the on-off circuit and the output terminal phase of first wake-up circuit
Even, first wake-up circuit controls the on-off circuit to turn on after receiving wake-up signal, so that the battery gives the friendship
Conversion circuit power supply is flowed, direct current is converted to alternating current by the ac conversion circuit；；The output terminal of the ac conversion circuit
It is connected with the primary coil of the transformer, the input terminal phase of the secondary coil of the transformer and the DC converting circuit
Even；The output terminal of the DC converting circuit supplies direct current to electrical appliance.Since the first wake-up circuit is receiving wake-up signal
After wake up power module, i.e. power module does not work when not being waken up, thus effectively reduces the static state of power drive system
Power consumption.
Further, power module provided by the utility model, first wake-up circuit include：First wake-up signal is defeated
Enter end, the first optical coupled switch, the first triode.Due to the input terminal of photosensitive tube and the cathode of battery of first optical coupled switch
It is connected, output terminal is connected through divider resistance with the base stage of the first triode, collector and the switch of first triode
The control terminal of circuit is connected, and is connected through divider resistance with the anode of battery, the emitter of first triode and battery
Anode is connected in this way, after the first optical coupled switch receives wake-up signal and opens, and the first triode meets unlocking condition, controls institute
State on-off circuit closure so that power supply is started to work.
Further, power module provided by the utility model, further includes：Second wake-up circuit；Described second wakes up electricity
Road includes：Second wake-up signal input terminal, reverse hold-off diode, the second optical coupled switch, Digital Signal Processing wake up end.Due to
The input termination power of the photosensitive tube of second optical coupled switch, output terminal wake up end with the Digital Signal Processing and are connected, institute
When stating the second wake-up signal input terminal and sending high pressure wake-up signal, second optical coupled switch is opened, at the digital signal
Reason wakes up end and sends wake-up signal, and digital signal processing chip receives defeated to first wake-up signal after high pressure wake-up signal
Enter end and send low pressure wake-up signal.So so that even if the wake-up signal of the utility model vehicle is lost, digital signal processor core
Sector-meeting sends low pressure wake-up signal to the first wake-up signal input terminal, power module is waken up, persistently to power to electrical appliance.
Further, power module provided by the utility model, further includes：It is connected to the battery and exchanges conversion with described
Filter circuit between circuit.The stability of power supply can so be lifted.
Further, power module provided by the utility model, further includes：Voltage feedback circuit and/or current feedback electricity
Road.Wherein, as long as the current feedback circuit gives definite limitation reference current, it is possible to which switching tube and transformer are flowed through in limitation exactly
In maximum current so that the protection switch pipe and transformer in output overloading or short circuit, it is possibility to have effect is overcome because of input electricity
Press the peak current that surge produces and damage power switch pipe.The voltage and reference voltage deviation of voltage feedback circuit feedback surpass
When crossing certain value, the latch reset of PWM control modules, switching tube cut-off.
Brief description of the drawings
, below will be to needed in the embodiment attached in order to illustrate more clearly of specific embodiment of the utility model
Figure is briefly described.
Fig. 1 is a kind of power module structure schematic diagram that the utility model embodiment provides；
Fig. 2 is a kind of wake-up circuit figure that the utility model embodiment provides；
Fig. 3 is a kind of transformer secondary coil voltage feedback circuit figure that the utility model embodiment provides；
Fig. 4 is a kind of current feedback circuit figure that the utility model embodiment provides.
Reference numeral
In Figs. 1-4：
BA1 batteries the second optical coupled switch of U106
T100 transformer U103 PWM control modules
U100 the first optical coupled switch HX2 the second wake-up signal input terminals
The reverse hold-off diodes of Q102 the first triode D112
HX1 the first wake-up signal input terminal HX3 Digital Signal Processing wakes up end
R109 divider resistance R110 divider resistances
R117 divider resistances
Embodiment
In order to make those skilled in the art more fully understand the scheme of the utility model embodiment, below in conjunction with the accompanying drawings and
Embodiment is described in further detail the utility model embodiment.
In order to reduce the quiescent dissipation of power drive system, power module should not work under non-wake-up states, thus
Quiescent dissipation can be effectively reduced.
A kind of as shown in Figure 1, power module structure schematic diagram provided for the utility model embodiment.
In the present embodiment, power module includes：Battery BA1, on-off circuit, the first wake-up circuit, ac conversion circuit,
Transformer T100 and DC converting circuit；The battery BA1 is connected with the input terminal of the on-off circuit, the on-off circuit
Output terminal is connected with the input terminal of the ac conversion circuit, the control terminal of the on-off circuit and first wake-up circuit
Output terminal is connected, and first wake-up circuit controls the on-off circuit to turn on after receiving wake-up signal, so that the battery
BA1 powers to the ac conversion circuit, and direct current is converted to alternating current by the ac conversion circuit；The exchange conversion
The output terminal of circuit is connected with the primary coil of the transformer T100, the secondary coil of the transformer T100 with it is described straight
The input terminal of stream conversion circuit is connected, and the transformer T100 changes electricity to being exported after alternating current progress transformation to the direct current
Road；The DC converting circuit is converted to alternating current after direct current by the output terminal of the DC converting circuit to electrical appliance
For direct current.
Wherein, the ac conversion circuit includes：PWM control modules U103 and the first field-effect transistor Q104, it is described
The output port of PWM control modules U103 is connected with the grid of the first field-effect transistor Q104, first field-effect
The input terminal of transistor Q104 is connected with the output terminal of the on-off circuit, the input terminal of the first field-effect transistor Q104
Ground connection；The PWM control modules U103 is used to export PWM ripples to control the opening and closing of the first field-effect transistor Q104, makes
Obtain in the primary coil of the transformer T100 and form alternating current, the model of the PWM control modules U103 can be
UC2845。
First wake-up circuit is in off state when not receiving wake-up signal so that battery BA1 is with exchanging conversion electricity
It is open circuit between road, power module does not work, so allows for power module and do not work under non-wake-up states, effectively reduce quiet
State power consumption.
In the present embodiment, as shown in Fig. 2, a kind of wake-up circuit figure provided for the utility model embodiment.At one
In embodiment, the wake-up circuit includes the first wake-up circuit, and first wake-up circuit includes：First wake-up signal input terminal
HX1, the first optical coupled switch U100, the first triode Q102.
Wherein, the cathode of the light emitting diode of the first optical coupled switch U100 connects power supply, and anode connects the first wake-up signal
Input terminal HX1, the input terminal of the photosensitive tube of the first optical coupled switch U100 are connected with the cathode of battery BA1, and output terminal is through dividing
Piezoresistance R109 is connected with the base stage of the first triode Q102, collector and the on-off circuit of the first triode Q102
Control terminal be connected, and be connected through divider resistance R110 with the anode of battery BA1, the emitter of the first triode Q102 with
The anode of battery BA1 is connected；The first optical coupled switch U100 is opened after receiving low pressure wake-up signal, control the described 1st
Pole pipe Q102 is opened, and wakes up power module.
In another embodiment, the power module further includes：Second wake-up circuit；The second wake-up circuit bag
Include：Second wake-up signal input terminal HX2, reverse hold-off diode D112, the second optical coupled switch U106, Digital Signal Processing wake up
Hold HX3.
Wherein, the second wake-up signal input terminal HX2 is through the reversely hold-off diode D112 and first optocoupler
The output terminal for switching the photosensitive tube of U100 is connected, and the cathode of the reversely hold-off diode D112 is through divider resistance R117 and institute
The cathode for stating the light emitting diode of the second optical coupled switch U106 is connected, and the light emitting diode of the second optical coupled switch U106 is born
Pole is connected with the anode of the battery BA1, the input termination power of the photosensitive tube of the second optical coupled switch U106, output terminal
End HX3 is waken up with the Digital Signal Processing to be connected.
When the second wake-up signal input terminal HX2 sends high pressure wake-up signal, the second optical coupled switch U106 is opened,
End HX3 is waken up to the Digital Signal Processing and sends wake-up signal, after digital signal processing chip receives high pressure wake-up signal
Low pressure wake-up signal is sent to the first wake-up signal input terminal HX1.
In the present embodiment, the utility model increases wake-up signal Wake UP in the primary side of transformer T100, believes waking up
When number being high level, the first triode Q102 is opened, and the primary side of transformer T100 is started to work, while wake-up states are led to
Know digital signal processor core DSP, even if the wake-up signal HX1 of vehicle loses, DSP can be sent out to the first wake-up signal input terminal HX1
Go out wake-up signal so that the primary side of transformer T100 is started to work, to power to electrical appliance.
In yet another embodiment, the power module further includes：It is connected to the battery BA1 and exchanges conversion electricity with described
Filter circuit between road.The filter circuit can be the filter circuit that the prior art uses, and direct current is exported with effective lifting
Stability.
In addition, when the ac conversion circuit includes：PWM control modules U103, the type of the PWM control modules U103
When number being UC2845, the power module can also include：Voltage feedback circuit；The voltage feedback circuit includes：Transformer
T100 secondary coil voltages feedback circuit, transformer T100 primary coil sample circuits.
The sampled voltage of the transformer T100 primary coil sample circuits is sent to the 7th pipe of PWM control modules U103
To power, (VCC comparator high and low thresholds are respectively foot：8.4V/7.6V, UC2845 minimum are 8.2V, power consumption at this time
In below 1mA.Input voltage can be obtained by one big valued resistor from high pressure decompression.After chip operation, input voltage can
(there is the Zener diode of a 36V in inside as voltage-stabiliser tube, is connected to the ground from VCC, its work for fluctuation between 7.6V~36V
With the destruction for being caused too high voltages during protecting integrated circuit from system startup or running), just stop less than 7.6V
Work), the feedback voltage of the transformer T100 secondary coil voltage feedback circuits is sent to the 2nd of PWM control modules U103
Pin.As shown in figure 3, a kind of transformer secondary coil voltage feedback circuit figure provided for the utility model embodiment, when defeated
Go out voltage because certain reason is higher, then sampled voltage is more than 2.5V, flows through the cathode current increase of TL431, its cathode drop
Low, the LEDs ON of optical coupled switch U107 shines, and photosensitive tube conducting, the 1st foot COMP of PWM control modules U103 becomes
For low potential, about 1V, RC vibrations are stopped.
Further, the power module further includes：Current feedback circuit, as shown in figure 4, being the utility model embodiment
A kind of current feedback circuit figure provided, wherein, the feedback current of the current feedback circuit is sent to PWM control modules U103
The 3rd pin.Its operation principle is：In peripheral circuit, a small resistance value is concatenated in the source electrode of power switch pipe (such as Mos pipes)
Sample resistance, the electric current of pulse transformer is converted into voltage, this voltage be sent into 3 pins, control pulsewidth.In addition, work as power supply
During electric voltage exception, the electric current increase of power switch pipe, when the voltage on sample resistance is more than 1V, reducing pulse width makes electricity
Source is in discontinuous operation state, and UC2845 just stops exporting, and is effectively protected power switch pipe.
Specifically, in current-control type DC/DC converters, due to inner ring employs direct peak value comparison method can be with
Timely and accurately detect the transient current in transformer and switching tube, form current impulse detection circuit one by one.As long as
Give definite limitation reference current, it is possible to which the maximum current in switching tube Q104 and transformer is flowed through in limitation exactly, so that defeated
Protection switch pipe Q104 and transformer when going out overload or short circuit, it is possibility to have effect overcomes the spike produced by input voltage surge
Electric current and damage power switch pipe.
When switching tube Q104 is turned on, its electric current flowed through gradually increases and by R122, R123, R124, R127 parallel connection shape
Into current sense resistor on produce pressure drop, the voltage is compared with the other end of current comparator, when voltage reaches certain
During value, latch reset, switching tube cut-off.
Preferably, the first optical coupled switch U100, the model TLP2301 of the second optical coupled switch U106.It is described
The model of first triode Q102：MMBT5551.
As it can be seen that the utility model provides a kind of power module, power drive system can be effectively reduced using the power module
Quiescent dissipation.
The structure, feature and effect of the utility model are described in detail according to diagrammatically shown embodiment above, with
Upper described is only the preferred embodiment of the utility model, but the utility model is to limit practical range shown in drawing, it is every according to
The change that conception according to the utility model is made, or the equivalent embodiment of equivalent variations is revised as, still without departing from specification and figure
When showing covered spirit, it should be within the protection scope of the present utility model.
Claims (9)
- A kind of 1. power module, it is characterised in that including：Battery (BA1), on-off circuit, the first wake-up circuit, ac conversion circuit, transformer (T100) and DC converting circuit；The battery (BA1) is connected with the input terminal of the on-off circuit, and the output terminal of the on-off circuit turns with described exchange The input terminal for changing circuit is connected, and the control terminal of the on-off circuit is connected with the output terminal of first wake-up circuit, and described One wake-up circuit controls the on-off circuit to turn on after receiving wake-up signal, so that the battery (BA1) turns to the exchange Circuit power supply is changed, direct current is converted to alternating current by the ac conversion circuit；The output terminal of the ac conversion circuit is connected with the primary coil of the transformer (T100), the transformer (T100) Secondary coil be connected with the input terminal of the DC converting circuit, the transformer (T100) to alternating current carry out transformation after it is defeated Go out to the DC converting circuit；The DC converting circuit is converted to alternating current after direct current by the output terminal of the DC converting circuit to electricity consumption Device supplies direct current.
- 2. power module according to claim 1, it is characterised in that first wake-up circuit includes：First wakes up letter Number input terminal (HX1), the first optical coupled switch (U100), the first triode (Q102)；The cathode of the light emitting diode of first optical coupled switch (U100) connects power supply, and anode connects the first wake-up signal input terminal (HX1), the input terminal of the photosensitive tube of first optical coupled switch (U100) is connected with the cathode of battery (BA1), and output terminal is through dividing Piezoresistance (R109) is connected with the base stage of the first triode (Q102), and the collector of first triode (Q102) is opened with described The control terminal on powered-down road is connected, and is connected through divider resistance (R110) with the anode of battery (BA1), first triode (Q102) emitter is connected with the anode of battery (BA1)；First optical coupled switch (U100) receives low pressure wake-up signal After open, control first triode (Q102) to open, wake up power module.
- 3. power module according to claim 2, it is characterised in that the power module further includes：Second wake-up circuit；Second wake-up circuit includes：Second wake-up signal input terminal (HX2), reverse hold-off diode (D112), the second light Coupling switch (U106), Digital Signal Processing wake up end (HX3)；The second wake-up signal input terminal (HX2) is through the reversely hold-off diode (D112) and first optical coupled switch (U100) output terminal of photosensitive tube is connected, and the cathode of the reversely hold-off diode (D112) is through divider resistance (R117) and institute The cathode for stating the light emitting diode of the second optical coupled switch (U106) is connected, the light emitting diode of second optical coupled switch (U106) Anode be connected with the anode of the battery (BA1), the input termination power of the photosensitive tube of second optical coupled switch (U106), Output terminal wakes up end (HX3) with the Digital Signal Processing and is connected；When the second wake-up signal input terminal (HX2) sends high pressure wake-up signal, second optical coupled switch (U106) is opened, End (HX3) is waken up to the Digital Signal Processing and sends wake-up signal, and digital signal processing chip receives high pressure wake-up signal The backward first wake-up signal input terminal (HX1) sends low pressure wake-up signal.
- 4. power module according to claim 1, it is characterised in that the power module further includes：It is connected to the electricity Filter circuit between pond (BA1) and the ac conversion circuit.
- 5. power module according to claim 1, it is characterised in that the ac conversion circuit includes：PWM control modules (U103) imitated with the first field-effect transistor (Q104), the output port of the PWM control modules (U103) with described first The grid of transistor (Q104) is answered to be connected, the input terminal of first field-effect transistor (Q104) is defeated with the on-off circuit Outlet is connected, the input end grounding of first field-effect transistor (Q104)；The PWM control modules (U103) are used to export PWM ripples to control the opening and closing of first field-effect transistor (Q104), So that form alternating current in the primary coil of the transformer (T100).
- 6. power module according to claim 5, it is characterised in that the power module further includes：Voltage feedback circuit；The voltage feedback circuit includes：The primary line of transformer (T100) secondary coil voltage feedback circuit, transformer (T100) Enclose sample circuit；The sampled voltage of transformer (T100) the primary coil sample circuit is sent to PWM control modules (U103) to power, The feedback voltage of transformer (T100) the secondary coil voltage feedback circuit is sent to PWM control modules (U103) to be compared It is right.
- 7. power module according to claim 5, it is characterised in that the power module further includes：Current feedback circuit, The feedback current of the current feedback circuit is sent to PWM control modules (U103) to be compared.
- 8. power module according to claim 3, it is characterised in that first optical coupled switch (U100), described second The model TLP2301 of optical coupled switch (U106).
- 9. power module according to claim 2, it is characterised in that the model of first triode (Q102)： MMBT5551。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721104872.8U CN207321120U (en) | 2017-08-31 | 2017-08-31 | A kind of power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721104872.8U CN207321120U (en) | 2017-08-31 | 2017-08-31 | A kind of power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207321120U true CN207321120U (en) | 2018-05-04 |
Family
ID=62384849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721104872.8U Expired - Fee Related CN207321120U (en) | 2017-08-31 | 2017-08-31 | A kind of power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207321120U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819752A (en) * | 2018-06-22 | 2018-11-16 | 东莞钜威动力技术有限公司 | Battery management system |
| CN115009023A (en) * | 2022-08-08 | 2022-09-06 | 阳光电源股份有限公司 | Vehicle-mounted power supply, power supply and control system thereof and power supply and control method thereof |
-
2017
- 2017-08-31 CN CN201721104872.8U patent/CN207321120U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819752A (en) * | 2018-06-22 | 2018-11-16 | 东莞钜威动力技术有限公司 | Battery management system |
| CN115009023A (en) * | 2022-08-08 | 2022-09-06 | 阳光电源股份有限公司 | Vehicle-mounted power supply, power supply and control system thereof and power supply and control method thereof |
| CN115009023B (en) * | 2022-08-08 | 2023-03-28 | 阳光电源股份有限公司 | Vehicle-mounted power supply, power supply and control system thereof and power supply and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20200831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |