CN204651922U - A kind of electric car power supply inputs anti-rush of current circuit - Google Patents
A kind of electric car power supply inputs anti-rush of current circuit Download PDFInfo
- Publication number
- CN204651922U CN204651922U CN201520369028.2U CN201520369028U CN204651922U CN 204651922 U CN204651922 U CN 204651922U CN 201520369028 U CN201520369028 U CN 201520369028U CN 204651922 U CN204651922 U CN 204651922U
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- controllable silicon
- power supply
- circuit
- silicon
- control circuit
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Abstract
The utility model discloses a kind of electric car power supply and input anti-rush of current circuit, comprising: one end and DC input the controllable silicon that positive/negative voltage end is connected; The Switching Power Supply primary side filter capacitor that one end is connected with the controllable silicon other end; The diode that one end is connected with controllable silicon; The power resistor that one end is connected with the diode other end, the power resistor other end is connected with the controllable silicon other end, and the Switching Power Supply primary side filter capacitor other end and DC input negative/positive voltage terminal and be connected, the silicon controlled control circuit be connected with controllable silicon; The power work environment circuit for detecting be connected with silicon controlled control circuit.The utility model utilizes silicon controlled diode characteristic, can play anti-reverse function.Compare relay circuit, input reverse-connection preventing circuit cost can be saved.And making the utility model volume little because of silicon controlled characteristic, structure is simple, long service life.
Description
Technical field
The utility model relates to protective circuit, more particularly, relates to a kind of vehicle power be applied on electric automobile, onboard charger lamp automobile power source inputs anti-rush of current circuit.
Background technology
At the input of high power switching power supply, usually can use big capacity electrolyte capacitor filter circuit, and this filter circuit can cause great immediate current at booting moment.In order to reduce the impulse current of power supply booting moment generation to the injury of Primary Component, protect power supply unit and power supply circuits, prior art means can increase NTC at power supply primary side usually, as shown in Figure 1 simultaneously; Or use the method for relay parallel resistance to suppress impulse current, as shown in Figure 2.This impulse current is consumed in the parallel resistance of NTC or relay.
But there is integrity problem in these two kinds of conventional methods on vehicle power: 1, input line is connected NTC, when power supply can be caused normally to work, NTC produces power consumption, reduces overall efficiency and high-temperature behavior, and NTC can not play the effect of impulse-current-proof in high temperature environments simultaneously; 2, use the method for relay parallel resistance, due to the service condition rather harsh of electric automobile, temperature and vibrations are required very high (usual vehicle power working temperature can high temperature more than 100 degree), relay at such high temperatures cannot reliably working, relay vibration resistance performance is bad simultaneously, and under vehicle pitching, relay coil easily damages, and therefore traditional relay parallel resistance method cannot meet the high reliability request of automobile on vehicle power.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of electric car power supply using controllable silicon in parallel with a resistor to input anti-rush of current circuit, in start process, control circuit can judge surrounding enviroment, just open controllable silicon when environment is normal, thus make reliability be far longer than traditional relay circuit.
It is as described below that the utility model solves the technical scheme that its technical problem adopts: a kind of electric car power supply inputs anti-rush of current circuit, it is characterized in that, comprising:
One end and DC input the controllable silicon that positive/negative voltage end is connected;
The Switching Power Supply primary side filter capacitor that one end is connected with the controllable silicon other end;
The diode that one end is connected with controllable silicon;
The power resistor that one end is connected with the diode other end, the power resistor other end is connected with the controllable silicon other end,
The Switching Power Supply primary side filter capacitor other end and DC input negative/positive voltage terminal and are connected,
The silicon controlled control circuit be connected with controllable silicon;
The power work environment circuit for detecting be connected with silicon controlled control circuit,
Power work environment circuit for detecting detecting input voltage does not have reversal connection, input voltage does not have under-voltage overvoltage, power work temperature is normal, and power source internal control circuit is working properly, then feeds back detecting information to silicon controlled control circuit, after silicon controlled control circuit judges that all normally, open controllable silicon, power supply is started working, if silicon controlled control circuit judged a certain abnormal time, then do not open controllable silicon, until all normal after open controllable silicon again.
According to the utility model of said structure, its beneficial effect is:
1. thyristor diode has good temperature characterisitic, significantly can not reduce reliability because temperature is high.
2. utilize silicon controlled diode characteristic, anti-reverse function can be played.Compare relay circuit, input reverse-connection preventing circuit can be saved.
3. to have volume little for controllable silicon, saves space, and convenient production is installed and produce encapsulating.
4. the controllable silicon life-span is long, and reliability is higher.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Fig. 1 is prior art input series connection NTC circuit arrangement structure chart;
Fig. 2 is prior art relay parallel resistive circuit schematic structure diagram;
Fig. 3 is the utility model specific embodiment one circuit structure diagram;
Fig. 4 is the utility model specific embodiment two circuit structure diagram.
In figures 3-4, T1: controllable silicon; D1: diode; R1: power resistor; C1: Switching Power Supply primary side filter capacitor; 1 Control: silicon controlled control circuit; 2 Detect: power work environment circuit for detecting; Input+:DC inputs positive voltage terminal; Input-DC inputs negative voltage side.
Embodiment
Embodiment one
As shown in Figure 3, a kind of electric car power supply inputs anti-rush of current circuit, comprising: controllable silicon T1; Diode D1; Power resistor R1; Switching Power Supply primary side filter capacitor C1; Silicon controlled control circuit 1 Control; Power work environment circuit for detecting 2 Detect.DC inputs positive voltage terminal Input+ and connects Switching Power Supply primary side filter capacitor C1 anode, Switching Power Supply primary side filter capacitor C1 negative terminal connects controllable silicon T1 anode, controllable silicon T1 negative electrode meets DC and inputs negative voltage side Input-, diode D1 anode connects with controllable silicon T1 anode, diode D1 negative electrode connects with power resistor R1, the power resistor R1 other end connects with controllable silicon T1 negative electrode, and Switching Power Supply primary side filter capacitor C1 negative terminal connects input negative voltage side.Controllable silicon T1 is connected with silicon controlled control circuit 1 Control, and silicon controlled control circuit 1 Control is connected with power work environment circuit for detecting 2 Detect.
Principle is as follows:
1, start impulse-current-proof process: after DC inputs positive and negative voltage end Input+ and Input-access power supply, controllable silicon T1 is not open-minded, and Switching Power Supply primary side filter capacitor C1 is charged by power resistor R1, and now input only has small area analysis to pass through.Along with charging continue Switching Power Supply primary side filter capacitor C1 voltage risen to enough high after, power work environment circuit for detecting 2#Detect, silicon controlled control circuit 1#Control start working.
2, controllable silicon opening process: do not have reversal connection when power work environment circuit for detecting 2#Detect detects input voltage, input voltage does not have under-voltage overvoltage, power work temperature is normal, power source internal control circuit is working properly, then by the information feed back that detects to silicon controlled control circuit 1 Control, silicon controlled control circuit 1 Control determine all normal after open controllable silicon T1, power supply is started working, and input starts there is big current.
Embodiment two
As shown in Figure 4, a kind of electric car power supply inputs anti-rush of current circuit, comprising: controllable silicon T1; Diode D1; Power resistor R1; Switching Power Supply primary side filter capacitor C1; Silicon controlled control circuit 1 Control; Power work environment circuit for detecting 2 Detect.DC inputs positive voltage terminal Input+ and connects controllable silicon T1 anode, controllable silicon T1 negative electrode connects Switching Power Supply primary side filter capacitor C1 anode, Switching Power Supply primary side filter capacitor C1 negative terminal meets DC and inputs negative voltage side Input-, diode D1 anode connects with controllable silicon T1 anode, diode D1 negative electrode connects with power resistor R1, and power resistor R1 connects with controllable silicon T1 negative electrode.Other structures are identical with embodiment with principle.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
By reference to the accompanying drawings exemplary description is carried out to patent of the present invention above; the realization of obvious patent of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method is conceived and technical scheme is carried out of patent of the present invention; or the design of patent of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.
Claims (1)
1. electric car power supply inputs an anti-rush of current circuit, it is characterized in that, comprising:
One end and DC input the controllable silicon that positive/negative voltage end is connected;
The Switching Power Supply primary side filter capacitor that one end is connected with the controllable silicon other end;
The diode that one end is connected with controllable silicon;
The power resistor that one end is connected with the diode other end, the power resistor other end is connected with the controllable silicon other end,
The Switching Power Supply primary side filter capacitor other end and DC input negative/positive voltage terminal and are connected,
The silicon controlled control circuit be connected with controllable silicon;
The power work environment circuit for detecting be connected with silicon controlled control circuit,
Power work environment circuit for detecting detecting input voltage does not have reversal connection, input voltage does not have under-voltage overvoltage, power work temperature is normal, and power source internal control circuit is working properly, then feeds back detecting information to silicon controlled control circuit, after silicon controlled control circuit judges that all normally, open controllable silicon, power supply is started working, if silicon controlled control circuit judged a certain abnormal time, then do not open controllable silicon, until all normal after open controllable silicon again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369028.2U CN204651922U (en) | 2015-06-02 | 2015-06-02 | A kind of electric car power supply inputs anti-rush of current circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520369028.2U CN204651922U (en) | 2015-06-02 | 2015-06-02 | A kind of electric car power supply inputs anti-rush of current circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204651922U true CN204651922U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520369028.2U Expired - Fee Related CN204651922U (en) | 2015-06-02 | 2015-06-02 | A kind of electric car power supply inputs anti-rush of current circuit |
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| CN (1) | CN204651922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108352830A (en) * | 2015-11-23 | 2018-07-31 | 博世株式会社 | Has the electronic device that secondary failure prevents circuit |
-
2015
- 2015-06-02 CN CN201520369028.2U patent/CN204651922U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108352830A (en) * | 2015-11-23 | 2018-07-31 | 博世株式会社 | Has the electronic device that secondary failure prevents circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20190602 |
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| CF01 | Termination of patent right due to non-payment of annual fee |