CN214728206U - Electric switch circuit and electric vehicle instrument - Google Patents
Electric switch circuit and electric vehicle instrument Download PDFInfo
- Publication number
- CN214728206U CN214728206U CN202022317269.6U CN202022317269U CN214728206U CN 214728206 U CN214728206 U CN 214728206U CN 202022317269 U CN202022317269 U CN 202022317269U CN 214728206 U CN214728206 U CN 214728206U
- Authority
- CN
- China
- Prior art keywords
- circuit
- switch
- electric
- resistor
- electric gate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to an electronic circuit specifically discloses a switch circuit, including switch output circuit and switch protection circuit, wherein, switch output circuit includes MOS pipe Q1, MOS pipe Q1 connects the back stage circuit, including at least one condenser in the back stage circuit, switch protection circuit includes switch module and current-limiting resistor, first power is connected to current-limiting resistor one end, current-limiting resistor's the other end is connected switch module opens when the switch, switch module switches on, switch protection circuit does the back stage circuit precharges, opens the timing back when the switch, switch output circuit works, prevents that electric capacity charging current is too big in the twinkling of an eye, and fragile MOS pipe Q1's problem, the utility model discloses product fault rate has been reduced.
Description
Technical Field
The utility model relates to an electric motor car field, concretely relates to electric gate circuit and electric motor car instrument.
Background
As shown in fig. 1, the electric gate circuit of the electric vehicle in the prior art includes an MOS transistor, and a back-stage circuit connected to the MOS transistor includes a plurality of capacitors, and at the moment when the electric gate is opened, the capacitor has a very large instantaneous charging current, which easily causes the MOS transistor in the electric gate circuit to be damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve among the prior art MOS pipe in the electric gate circuit and open the problem of easy damage in the twinkling of an eye at the electric gate, provide a new electric gate circuit.
In order to solve the technical problem, the technical scheme adopted by the application is as follows:
an electric gate circuit comprising:
the electric gate output circuit comprises a MOS tube Q1, the MOS tube Q1 is connected with a post-stage circuit, and the post-stage circuit comprises at least one capacitor;
electric door protection circuit, electric door protection circuit includes switch module and current-limiting resistor, first power is connected to current-limiting resistor one end, current-limiting resistor's the other end is connected the switch module opens when the electric door, the switch module switches on, electric door protection circuit does back stage circuit pre-charge, opens after timing when the electric door, electric door output circuit work.
Further, after the electric switch is opened for a certain time, the switch assembly is switched off, the electric switch protection circuit stops working, and then the electric switch output circuit works.
Further, the electric-gate output circuit further comprises a switch tube Q2, a second end of the MOS tube Q1 is connected to the first power supply, a third end of the MOS tube Q1 is connected to the post-stage circuit, and a first end of the MOS tube Q1 is connected to the first output end of the controller through the switch tube Q2.
Further, the switch assembly includes a switch Q3 and a switch Q4, the current limiting resistor is configured as a resistor R7, one end of the resistor R7 is connected to the first power supply, the other end of the resistor R7 is connected to the second end of the switch Q3, the third end of the switch Q3 is connected to the third end of the MOS transistor Q1, and the first end of the switch Q3 is connected to the second output end of the controller through a switch Q4.
Furthermore, the electric gate circuit further comprises a controller, when the electric gate key is pressed down, a first output end of the controller outputs a high level, after the interval is timed, a first output end of the controller outputs a low level, and a second output end of the controller outputs a high level.
Further, the electric door protection circuit further comprises a resistor R8 and a resistor R9, one end of the resistor R8 is connected with the first power supply, the other end of the resistor R8 is connected with the first end of the switch tube Q3, and the other end of the resistor R8 is connected with the switch tube Q4 through the resistor R9.
Further, the electric gate circuit also comprises a thermistor R1, and the third end of the MOS transistor Q1 is connected with the rear-stage circuit through the thermistor R1.
The utility model discloses a solve the MOS pipe among the current electric motor car instrument electric gate circuit and open the problem of easy damage in the twinkling of an eye at the electric gate, provide a new electric motor car instrument.
The electric vehicle instrument comprises the electric door circuit, and further comprises a display circuit, an audio playing circuit, a temperature detection circuit, a lighting circuit, a voltage detection circuit, a vibration detection circuit, a wheel movement detection circuit, a proximity unlocking circuit and/or a one-key starting circuit.
Further, the approach unlocking circuit comprises a bluetooth module, an NFC module, a PKE module and/or an RFID module, and the bluetooth module, the NFC module, the PKE module and/or the RFID module are respectively connected to the controller.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model provides a switch circuit includes switch output circuit and switch protection circuit, the switch protection circuit includes current-limiting resistance and switch module, when the switch was opened, switch module switched on, the switch protection circuit precharges for the back stage circuit of MOS pipe Q1 in the switch output circuit, after charging a period, the switch output circuit begins to work, has solved the instant that the switch was opened in the prior art, and electric capacity charging current is too big in the twinkling of an eye, the problem of MOS pipe Q1 of fragile, the utility model discloses reduced the product failure rate;
2. the utility model provides a switch circuit, after charging for a period of time, the switch protection circuit stops working, then the switch output circuit starts working, namely, when working normally, the switch protection circuit will not influence the working of the switch circuit;
3. the utility model provides an electric gate circuit has thermistor R1 in series connection behind MOS pipe Q1, and when MOS pipe Q1 switched on, electric gate output circuit just started the during operation promptly, and thermistor R1 can further restrict impulse current, and thermistor R1 generates heat this moment, and later thermistor R1 impedance slowly reduces, is approximately zero, and electric gate output circuit resumes normal work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit diagram of an electric gate output circuit provided in an embodiment of the present invention;
fig. 2 is a circuit diagram of a gate protection circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the utility model provides a switch circuit, including switch output circuit and switch protection circuit, switch output circuit includes MOS pipe Q1, MOS pipe Q1 connects the back level circuit, including at least one condenser in the back level circuit, switch protection circuit includes switch module and current-limiting resistor, first power is connected to current-limiting resistor one end, current-limiting resistor's the other end is connected switch module opens when the switch, switch module switches on, switch protection circuit does back level circuit precharge, the completion of charging after a period of time, switch output circuit begins to work, has solved in the twinkling of an eye that the switch opened among the prior art, and electric capacity charging current is too big in the twinkling of an eye, easily damages MOS pipe Q1's problem, the utility model discloses product fault rate has been reduced.
Preferably, after the electric gate is opened for a certain time, that is, after the pre-charging period or the capacitor charging is completed, the switch assembly is turned off, the electric gate protection circuit stops working, and then the electric gate output circuit works, so that when the electric gate output circuit works normally, the electric gate protection circuit does not affect the work of the electric gate output circuit.
As a specific embodiment of the electric gate output circuit provided in this embodiment, as shown in fig. 1, the electric gate output circuit further includes a switch tube Q2, the second terminal of the MOS tube Q1 is connected to the first power supply, the third terminal of the MOS tube Q1 is connected to the post-stage circuit, the first terminal of the MOS tube Q1 is connected to the first output terminal of the controller through the switch tube Q2, when the first output terminal of the controller outputs a high level, the switch tube Q2 is turned on, the MOS tube Q1 is turned on, and the electric gate output circuit starts to operate.
Preferably, as shown in fig. 1, the present embodiment further includes a thermistor R1, the third terminal of the MOS transistor Q1 is connected to the post-stage circuit through the thermistor R1, when the MOS transistor Q1 is turned on, that is, when the gate output circuit starts to operate, the thermistor R1 can limit the inrush current, at this time, the thermistor R1 generates heat, and then the resistance of the thermistor R1 gradually decreases to approximately zero, so that the gate output circuit returns to normal operation.
As a specific embodiment of the electric gate protection circuit provided in this embodiment, as shown in fig. 2, the switch component includes a switch Q3 and a switch Q4, the current-limiting resistor is configured as a resistor R7, one end of the resistor R7 is connected to the first power supply, the other end of the resistor R7 is connected to the second end of the switch Q3, the third end of the switch Q3 is connected to the third end of the MOS transistor Q1, the first end of the switch Q3 is connected to the second output end of the controller through a switch Q4, when the second output end of the controller outputs a high level, the switch Q4 is turned on, the switch Q3 is turned on, and the resistor R7 is connected in series in a circuit loop to limit a charging current and charge a subsequent circuit.
Further, the electric gate protection circuit further comprises a resistor R8 and a resistor R9, one end of the resistor R8 is connected to the first power supply, the other end of the resistor R8 is connected to the first end of the switch tube Q3, and meanwhile, the other end of the resistor R8 is connected to the switch tube Q4 through the resistor R9, so that when the electric gate protection circuit is required to work, a conducting voltage is provided for the switch tube Q3, and the switch tube Q3 is in an amplifying state.
As a specific implementation of the controller provided in this embodiment, the controller includes but is not limited to a single chip, when a user presses the switch to open, the controller outputs a high level to the switch protection circuit first, so that the switch protection circuit operates, thereby charging the subsequent circuit, and after a period of time, outputs a low level to the switch protection circuit, so that the switch protection circuit stops charging, and then outputs a high level to the switch output circuit, so that the switch output circuit operates, the switch is opened, and the circuit starts to operate normally.
The utility model discloses a solve among the prior art electric motor car electric gate circuit MOS pipe Q1 and open the problem of easy damage in the twinkling of an eye at the electric gate, provide an electric motor car instrument, this electric motor car instrument includes foretell electric gate circuit, electric motor car instrument still includes display circuit, audio playback circuit, temperature detection circuitry, lighting circuit, voltage detection circuitry, vibrations detection circuitry, the detection circuitry that moves in turns, is close to unblock circuit and/or a key starting circuit.
Further, the approach unlocking circuit comprises a bluetooth module, an NFC module, a PKE module and/or an RFID module, and the bluetooth module, the NFC module, the PKE module and/or the RFID module are respectively connected to the controller.
In summary, the electric gate circuit provided in this embodiment can reduce the damage rate of the MOS transistor Q1.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (9)
1. An electrical gating circuit, comprising:
the electric gate output circuit comprises a MOS tube Q1, the MOS tube Q1 is connected with a post-stage circuit, and the post-stage circuit comprises at least one capacitor;
electric door protection circuit, electric door protection circuit includes switch module and current-limiting resistor, first power is connected to current-limiting resistor one end, current-limiting resistor's the other end is connected the switch module opens when the electric door, the switch module switches on, electric door protection circuit does back stage circuit pre-charge, opens after timing when the electric door, electric door output circuit work.
2. The electric gate circuit of claim 1, wherein after the time the electric gate is on, the switch assembly is turned off, the electric gate protection circuit stops operating, and then the electric gate output circuit operates.
3. The electric gate circuit of claim 2, further comprising a controller, wherein the electric gate output circuit further comprises a switch Q2, the second terminal of the MOS transistor Q1 is connected to the first power supply, the third terminal of the MOS transistor Q1 is connected to the post-stage circuit, and the first terminal of the MOS transistor Q1 is connected to the first output terminal of the controller via a switch Q2.
4. The electric gate circuit of claim 3, wherein the switch component comprises a switch transistor Q3 and a switch transistor Q4, the current limiting resistor is configured as a resistor R7, one end of the resistor R7 is connected to the first power supply, the other end of the resistor R7 is connected to the second end of the switch transistor Q3, the third end of the switch transistor Q3 is connected to the third end of the MOS transistor Q1, and the first end of the switch transistor Q3 is connected to the second output end of the controller through a switch transistor Q4.
5. The electric gate circuit of claim 4, wherein the first output terminal of the controller outputs a high level when the electric gate button is pressed, and the first output terminal of the controller outputs a low level and the second output terminal of the controller outputs a high level after the interval time.
6. An electric gate circuit as claimed in claim 5, characterized in that the electric gate protection circuit further comprises a resistor R8 and a resistor R9, one end of the resistor R8 being connected to the first power supply, the other end of the resistor R8 being connected to the first end of the switching tube Q3, while the other end of the resistor R8 being connected to the switching tube Q4 via the resistor R9.
7. The electric gate circuit of claim 1, further comprising a thermistor R1, wherein the third terminal of the MOS transistor Q1 is connected to the post-stage circuit via the thermistor R1.
8. An electric vehicle meter comprising the switch circuit of any one of claims 3-6, wherein the electric vehicle meter further comprises a display circuit, an audio playback circuit, a temperature detection circuit, a lighting circuit, a voltage detection circuit, a shock detection circuit, a wheel motion detection circuit, a proximity unlocking circuit, and/or a one-key start circuit.
9. The electric vehicle meter of claim 8, wherein the proximity unlocking circuit comprises a bluetooth module, an NFC module, a PKE module, and/or an RFID module, and the bluetooth module, the NFC module, the PKE module, and/or the RFID module are respectively connected to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317269.6U CN214728206U (en) | 2020-10-15 | 2020-10-15 | Electric switch circuit and electric vehicle instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022317269.6U CN214728206U (en) | 2020-10-15 | 2020-10-15 | Electric switch circuit and electric vehicle instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214728206U true CN214728206U (en) | 2021-11-16 |
Family
ID=78574260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022317269.6U Active CN214728206U (en) | 2020-10-15 | 2020-10-15 | Electric switch circuit and electric vehicle instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214728206U (en) |
-
2020
- 2020-10-15 CN CN202022317269.6U patent/CN214728206U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205523742U (en) | Electric automobile soft start circuit system based on negative temperature coefficient thermistor | |
| WO2020177467A1 (en) | Smart battery wire clip, integrated starting power supply device, and ignition method | |
| CN210490824U (en) | Inrush current suppression circuit | |
| CN208209812U (en) | A kind of highpowerpulse load power source soft starting device | |
| CN110635676A (en) | Bootstrap type pre-charging slow-starting charging circuit | |
| CN107069688A (en) | A kind of surge restraint circuit and Surge suppression method | |
| CN108512409A (en) | A kind of highpowerpulse load power source soft starting device and start method | |
| CN203368012U (en) | DC contactor combined circuit for electric automobile | |
| CN112879649B (en) | Control circuit for peak holding type solenoid valve | |
| CN214728206U (en) | Electric switch circuit and electric vehicle instrument | |
| CN106655385A (en) | Anti-reverse connection system and method applied to battery management unit equalization channels | |
| CN112026522B (en) | Power supply circuit with automatic precharge function | |
| CN219659582U (en) | Slow start circuit, power supply circuit and electronic equipment | |
| KR100523830B1 (en) | Method for controlling the charging and discharging phases of a back-up capacitor | |
| CN100578707C (en) | Relay system with relative better arc protective circuit and its control method | |
| CN216121850U (en) | Lithium battery management system | |
| CN112769103B (en) | Transient supporting protection system for super capacitor | |
| CN114006426A (en) | Large capacitive load pre-charging circuit and working method thereof | |
| CN205453540U (en) | Intelligence power module and air conditioner | |
| CN213634413U (en) | Automatic power-on starting circuit | |
| CN205453537U (en) | Intelligence power module and air conditioner | |
| CN212113568U (en) | Protection control circuit of pre-charging relay and electronic equipment | |
| CN211830572U (en) | Soft start controllable circuit | |
| CN209571965U (en) | A kind of novel intelligent inverter | |
| CN217086476U (en) | Magnetic latching relay control circuit and energy storage equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |