CN207939191U - A kind of overload-alarm system of new energy auto high-voltage electrical box - Google Patents
A kind of overload-alarm system of new energy auto high-voltage electrical box Download PDFInfo
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- CN207939191U CN207939191U CN201820394716.8U CN201820394716U CN207939191U CN 207939191 U CN207939191 U CN 207939191U CN 201820394716 U CN201820394716 U CN 201820394716U CN 207939191 U CN207939191 U CN 207939191U
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Abstract
A kind of overload-alarm system of the new energy auto high-voltage electrical box of the utility model; including power signal amplifying circuit, oscillating circuit, overload-alarm circuit, overload protecting circuit; power signal amplifying circuit connects oscillating circuit; oscillating circuit connects overload-alarm circuit; overload-alarm circuit connects overload protecting circuit; effective solution is current long using multi-energy controller overload-alarm system data processing time, and overload protection arrangement is slow in reacting when leading to overload, and the problem that cost is high.The utility model is simple in structure, at low cost, response is fast easy to utilize; simulated power signal through ratio enlargement, be converted to the square-wave signal of certain frequency; square-wave signal triggers turn on thyristors all the way when overload; triode is driven to connect alarm sounding alarm; another way is after resistance R8, electrolytic capacitor C4 delays 3S; overload relay is driven to be attracted, the power supply of the terminals of the normally-closed contact cutoff high electrical appliance kit of disconnection to motor, progress overload protection.
Description
Technical field
The utility model is related to overload-alarm technical field, the overload report of especially a kind of new energy auto high-voltage electrical box
Alert system.
Background technology
New-energy automobile includes pure electric automobile, stroke-increasing electric automobile, hybrid vehicle, fuel battery electric vapour
Vehicle, hydrogen engine automobile, other new-energy automobiles etc., wherein pure electric automobile are widely popularized since discharge amount of exhaust gas is very low,
New-energy automobile is usually run under powerful electric power, and voltage is up to 700V in high pressure electric appliance box（DC）More than, electric current is up to
400A。
When high pressure electric appliance box works, if serious overload operation for a long time, high voltage parts accelerate in high pressure electric appliance box
Aging shortens the working life or seriously causes the event of fire, at present by multi-energy controller, and passes through certain logic
Algorithm calculates, sends out overload protection instruction after analytical judgment, and such method data processing time is long, overload protection when causing to overload
Device reaction is blunt, and cost is high.
Therefore the utility model provides a kind of new scheme to solve the problems, such as this.
Utility model content
In view of the deficienciess of the prior art, the utility model aim is to provide a kind of new energy auto high-voltage electrical box
Overload-alarm system, effective solution is current long using multi-energy controller overload-alarm system data processing time, causes
Overload protection arrangement is slow in reacting when overload, and the problem that cost is high.
To achieve the goals above, the utility model is to realize by the following technical solutions：It is put including power signal
Big circuit, oscillating circuit, overload-alarm circuit, overload protecting circuit, power signal amplifying circuit connect oscillating circuit, concussion electricity
Road connects overload-alarm circuit, and overload-alarm circuit connects overload protecting circuit；
The power signal amplifying circuit includes operational amplifier U1, and the power end connection power supply of operational amplifier U1+
The ground terminal of 15V, operational amplifier U1 connect power supply -15V, and the in-phase input end of operational amplifier U1 connects one end of resistance R2,
The other end connection ground of resistance R2, the inverting input of operational amplifier U1 be separately connected one end of resistance R1, resistance R3 one
End, the output end of the other end connection power signal of resistance R1, the other end of resistance R3 are separately connected the defeated of operational amplifier U1
The anode of outlet, diode D1.
Preferably, the oscillating circuit includes diode D1, and the cathode of diode D1 is separately connected the one of ground resistance R4
End, one end of ground capacity C1, the anode of diode D2, resistance R5 one end, the one of the cathode connection resistance R6 of diode D2
End, the cathode of the other end connection diode D3 of resistance R5, the other end of resistance R6 and the anode connection capacitance C2 of diode D3
One end, capacitance C2 the other end connection ground.Preferably, the window comparator circuit includes operational amplifier A R2, AR3, operation
The in-phase input end of amplifier AR3 be separately connected one end of resistance R5, resistance R4 one end, the other end of resistance R4 is separately connected
The in-phase input end of operational amplifier A R2, one end of resistance R3, the other end connection ground of resistance R3, the other end of resistance R5 connect
Power supply+5V is met, the ends VCC of operational amplifier A R3 connect power supply+5V, the ends the GND connection ground of operational amplifier A R3, operation amplifier
The output end of the inverting input connection operational amplifier A R1 of device AR2, AR3.
Preferably, the overload-alarm circuit includes thyristor VTL1, the triggering end connection diode D3 of thyristor VTL1
Anode, the anode connection power supply+12V of the anode of thyristor VTL1 and alarm LS1, the cathode of thyristor VTL1 is separately connected
It is grounded the anode of electrolytic capacitor C3, the base stage of triode Q2, the emitter of triode Q2 passes through resistance R9 connections ground, triode Q2
Collector connection alarm LS1 cathode；
The overload protecting circuit includes triode Q1, and the base stage of triode Q1 connects one end of resistance R7, resistance R7's
The other end be separately connected one end of resistance R8, electrolytic capacitor C4 anode, the anode of the other end connection diode D3 of resistance R8,
The cathode connection ground of electrolytic capacitor C4, the emitter connection ground of triode Q1, the collector of triode Q1 are separately connected diode
The anode of D4, coil one end of overload relay K1, the cathode of diode D4 are connected with the coil other end of overload relay K1
The terminals of the common end of power supply+VCC, overload relay K1 and normally-closed contact string in motor.
The utility model is simple in structure, at low cost, response is fast easy to utilize, simulated power signal through ratio enlargement,
Be converted to the square-wave signal of certain frequency, square-wave signal triggers turn on thyristors in overload-alarm circuit all the way when overload, drives
Triode connects alarm sounding alarm, and another way after resistance R8, electrolytic capacitor C4 delays 3S, inhale by driving overload relay
It closes, the power supply of the terminals of the normally-closed contact cutoff high electrical appliance kit of disconnection to motor, progress overload protection.
Description of the drawings
Fig. 1 is the utility model circuit link block figure.
Fig. 2 is the utility model circuit catenation principle figure.
Specific implementation mode
For aforementioned and other technology contents, feature and effect in relation to the utility model, following cooperation with reference to figures 1 through
Fig. 2 is in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
Embodiment one, a kind of overload-alarm system of new energy auto high-voltage electrical box, power signal amplifying circuit is by mould
Quasi- power signal carries out equal proportion amplification and enters oscillating circuit, and amplified simulated power signal is further converted to certain frequency
The square-wave signal of rate, square-wave signal trigger turn on thyristors in overload-alarm circuit all the way, and driving triode connects alarm hair
Acoustic alarm, after resistance R8, electrolytic capacitor C4 delays 3S, driving overload relay is attracted another way to overload protecting circuit, is broken
Power supply of the normally-closed contact cutoff high electrical appliance kit opened to the terminals of motor；The power signal amplifying circuit is by mould
Quasi- power signal carries out equal proportion amplification, including the power end of operational amplifier U1, operational amplifier U1 connect power supply+15V, fortune
Calculate the power that the inverting input of ground terminal the connection power supply -15V, operational amplifier U1 of amplifier U1 are inputted by resistance R1 connections
Signal（Power signal can be obtained by voltage that multiplier acquires voltage transformer and current transformer, electric current multiplication, this is existing
There is technology, this will not be detailed here）, resistance R3 is the resistance value of feedback resistance, regulation resistance R3 or resistance R1, and operation amplifier is adjusted
The in-phase input end of the multiple of device U1 ratio enlargements, operational amplifier U1 connects ground resistance R2, is biasing resistor, operation amplifier
The pin 3 of device U1 is output end.
Embodiment two, on the basis of embodiment one, the power signal of simulation is converted to certain frequency by the oscillating circuit
The square-wave signal of rate, including diode D1, the simulated power signal of amplification through diode rectification be sent to resistance R4, capacitance C1 one
The RC oscillating circuits of end, diode D2 and resistance R6 series circuits, diode D3 and concatenated resistance R5, capacitance C2 compositions, are adjusted
Economize on electricity resistance R4, capacitance C1, capacitance C2 regulating power signals correspond to the frequency and amplitude of square-wave signal.
Embodiment three, on the basis of embodiment one, the overload-alarm circuit packet triggers thyristor for overload signal
Conducting, driving triode connect alarm sounding alarm, include the triggering end connection oscillation electricity of thyristor VTL1, thyristor VTL1
The power signal of road output, when overload, thyristor VTL1 conductings, power supply+12V arrives cathode by the anode of thyristor VTL1, electric
Solving capacitance C3 charging, when charging complete, the just extremely power supply+12V of electrolytic capacitor C3 is connected to the anode of alarm LS1 all the way,
Another way is added to the base stage of triode Q2 after electric resistance partial pressure, and the emitter of triode Q2 passes through resistance R9 connections ground, triode
Q2 be connected, power supply+12V, the anode of alarm LS1, the cathode of alarm LS1, the triode Q2 of conducting, resistance R9, constitute
The circuit of current flowing, alarm LS1 sounding alarms；The overload protecting circuit is used to, by after overload signal delay 3S, drive
Overload relay is attracted, the power supply of the terminals of the normally-closed contact cutoff high electrical appliance kit of disconnection to motor, including three
The power signal of pole pipe Q1, oscillating circuit output pass through electricity after the delay circuit of resistance R8, electrolytic capacitor C4 compositions are delayed 3S
Resistance R7 is added to the base stage of triode Q1, since the emitter of triode Q1 connects ground, triode Q1 conductings, the current collection of triode Q1
Electrode potential drags down, power supply+VCC and be added to overload relay K1 coil both ends, overload relay K1 obtains electric, normally-closed contact
It disconnects, automatically cuts off high pressure electric appliance box to the power supply of the terminals of motor, diode D4 is fly-wheel diode.
For the utility model when being used, simulated power signal is through operational amplifier U1, resistance R1, resistance R2 electricity
Resistance R4, one end of capacitance C1, diode D2 and resistance R6 series connection are sent to after the in-phase proportion amplifying circuit amplification of resistance R3 compositions
The RC oscillating circuits that circuit, diode D3 and concatenated resistance R5, capacitance C2 are formed are converted to the square-wave signal of certain frequency, adjust
Economize on electricity resistance R4, capacitance C1, capacitance C2 regulating power signals correspond to the frequency and amplitude of square-wave signal, this square-wave signal overload
When, thyristor VTL1 conductings, one tunnels power supply+12V are connected to the anode of alarm LS1, and another way is added to three after electric resistance partial pressure
The base stage of pole pipe Q2, triode Q2 conducting, power supply+12V, the anode of alarm LS1, the cathode of alarm LS1, conducting three poles
Pipe Q2, resistance R9, constitute the circuit of current flowing, alarm LS1 sounding alarms, another way is through resistance R8, electrolytic capacitor C4
After the delay circuit delay 3S of composition, the base stage of triode Q1, triode Q1 conductings, power supply+VCC and ground are added to by resistance R7
It is added to the both ends of the coil of overload relay K1, overload relay K1 obtains electric, and normally-closed contact disconnects, and automatically cuts off high pressure electric appliance box
To the power supply of the terminals of motor, overload protection is carried out.
The above is to combine specific implementation mode further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；For belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made by expand and operating method, data replacement, should all fall
Within scope of protection of the utility model.
Claims (3)
1. a kind of overload-alarm system of new energy auto high-voltage electrical box, including power signal amplifying circuit, oscillating circuit, mistake
Carry warning circuit, overload protecting circuit, which is characterized in that power signal amplifying circuit connects oscillating circuit, oscillating circuit connection
Overload-alarm circuit, overload-alarm circuit connect overload protecting circuit；
The power signal amplifying circuit includes operational amplifier U1, and the power end of operational amplifier U1 connects power supply+15V, fortune
The ground terminal for calculating amplifier U1 connects power supply -15V, one end of the in-phase input end connection resistance R2 of operational amplifier U1, resistance R2
Other end connection ground, the inverting input of operational amplifier U1 be separately connected one end of resistance R1, resistance R3 one end, resistance
The output end of the other end connection power signal of R1, the other end of resistance R3 are separately connected the output end of operational amplifier U1, two
The anode of pole pipe D1.
2. a kind of overload-alarm system of new energy auto high-voltage electrical box according to claim 1, which is characterized in that institute
It includes diode D1 to state oscillating circuit, the cathode of diode D1 be separately connected one end of ground resistance R4, ground capacity C1 one
It holds, one end of the anode of diode D2, resistance R5, one end of the cathode connection resistance R6 of diode D2, the other end of resistance R5
The cathode of diode D3 is connected, one end of the other end of resistance R6 and the anode connection capacitance C2 of diode D3, capacitance C2's is another
One end connection ground.
3. a kind of overload-alarm system of new energy auto high-voltage electrical box according to claim 1, which is characterized in that institute
It includes thyristor VTL1, the anode of the triggering end connection diode D3 of thyristor VTL1, thyristor VTL1 to state overload-alarm circuit
Anode and alarm LS1 anode connection power supply+12V, the cathode of thyristor VTL1 is separately connected ground connection electrolytic capacitor C3's
The emitter of the base stage of anode, triode Q2, triode Q2 passes through resistance R9 connections ground, the collector connection alarm of triode Q2
The cathode of device LS1；
The overload protecting circuit includes triode Q1, and one end of the base stage connection resistance R7 of triode Q1, resistance R7's is another
Hold the anode of one end, electrolytic capacitor C4 for being separately connected resistance R8, the anode of the other end connection diode D3 of resistance R8, electrolysis
The cathode connection ground of capacitance C4, the emitter connection ground of triode Q1, the collector of triode Q1 are separately connected diode D4's
Anode, overload relay K1 coil one end, the cathode of diode D4 connected with the coil other end of overload relay K1 power supply+
The terminals of the common end of VCC, overload relay K1 and normally-closed contact string in motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394716.8U CN207939191U (en) | 2018-03-22 | 2018-03-22 | A kind of overload-alarm system of new energy auto high-voltage electrical box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394716.8U CN207939191U (en) | 2018-03-22 | 2018-03-22 | A kind of overload-alarm system of new energy auto high-voltage electrical box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207939191U true CN207939191U (en) | 2018-10-02 |
Family
ID=63655741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820394716.8U Expired - Fee Related CN207939191U (en) | 2018-03-22 | 2018-03-22 | A kind of overload-alarm system of new energy auto high-voltage electrical box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207939191U (en) |
-
2018
- 2018-03-22 CN CN201820394716.8U patent/CN207939191U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181213 Address after: 518000 Excellent Times Square Building 701-712 712, 4068 Yitian Road, Futian Street, Futian District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN DACHENG TECHNOLOGY Co.,Ltd. Address before: Room 232, 2nd floor, No. 3 Building, Yanshangyuan, Xierqi, Haidian District, Haidian District, Beijing 100085 Patentee before: LVCHI AUTOMOTIVE TECHNOLOGY (BEIJING) CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 |