CN219891557U - Anti-dead-time circuit for electric vehicle instrument panel - Google Patents
Anti-dead-time circuit for electric vehicle instrument panel Download PDFInfo
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- CN219891557U CN219891557U CN202320681199.3U CN202320681199U CN219891557U CN 219891557 U CN219891557 U CN 219891557U CN 202320681199 U CN202320681199 U CN 202320681199U CN 219891557 U CN219891557 U CN 219891557U
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- 239000003990 capacitor Substances 0.000 claims description 36
- 238000001514 detection method Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 230000002265 prevention Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of electric vehicle instrument panels and discloses an electric vehicle instrument panel anti-dead-time circuit which comprises a control unit, a power supply unit and a switch unit, wherein the power supply unit is used for providing working voltage for the control unit, the working voltage is input to the input end of the switch unit, the output end of the switch unit is configured to provide power for a chip of an electric vehicle, the control unit is electrically connected with the switch unit, and a control signal for controlling the on-off of the switch unit is input to the switch unit; when the electric vehicle instrument is in actual use, the control chip of the electric vehicle instrument is halted, and the control chip can be powered on and reset again through the electric vehicle instrument, so that the control chip can be powered on again without turning off an air switch in an electric vehicle seat to power on again, the operation is simple and convenient, and manual operation is not needed.
Description
Technical Field
The utility model relates to the technical field of electric vehicle instrument panels, in particular to an anti-dead-time circuit of an electric vehicle instrument panel.
Background
In short distance travel, two-wheeled electric vehicles are widely used in people's daily life because they are easy to park, there is no concern about road congestion, and electric power is used as energy supply. For a two-wheeled electric vehicle, the electric vehicle comprises an electric vehicle instrument for displaying electric vehicle state information such as current riding speed and current residual quantity of a battery, wherein the electric vehicle instrument displays information based on data sent by a controller of the electric vehicle.
When in actual use, the electric vehicle instrument can appear the chip dead halt condition because of external interference, when the condition appears, the electric vehicle instrument is because the information of can not normally receiving shows, consequently need to power on reset to the electric vehicle instrument, but the power break-make of electric vehicle instrument is mostly according to the air switch control of dress under the electric vehicle seat, just can realize the power on reset of electric vehicle instrument after opening the air switch promptly, but this kind of mode complex operation brings inconvenience for riding the people, and riding the pedestrian often not realize that control chip dead halt leads to electric vehicle instrument unable normal operating moreover.
Disclosure of Invention
In view of the shortcomings of the background technology, the utility model provides an anti-crash circuit of an electric vehicle instrument panel, which is used for resetting a control chip of an electric vehicle instrument by powering on the chip again when the control chip crashes.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides an electric motor car panel board anti-dead-time circuit, includes control unit, power supply unit and switch element, power supply unit is used for to control unit provides operating voltage, operating voltage is input to switch element's input, switch element's output is configured in and provides the power to the control chip of electric motor car instrument, control unit with the switch element electricity is connected, to switch element input control signal of its break-make of control.
When the electric vehicle instrument is actually used, the control chip of the electric vehicle instrument sends a pulse signal to the control unit, and if the control unit does not receive the pulse signal, the control chip is halted. Because the power of the control chip is provided by the output end of the switch unit, when the control unit cannot receive the pulse signal, the control unit controls the switch unit to be firstly disconnected and then connected, so that the power-on reset of the control chip is realized, and the control chip is prevented from being halted all the time.
In a certain implementation manner, the power supply unit includes a capacitor C2, a capacitor C3, a capacitor C4, and a voltage conversion chip U1 with a model LN1152, a first pin and a third pin of the voltage conversion chip U1 are electrically connected to one end of the capacitor C2, the other end of the capacitor C2 is grounded, a second pin of the voltage conversion chip U1 is grounded, a fifth pin of the voltage conversion chip U1 is electrically connected to one end of the capacitor C3 and one end of the capacitor C4, and is configured to output the working voltage, and the other ends of the capacitor C3 and the capacitor C4 are both grounded.
In an embodiment, the switching unit includes a resistor R4, a resistor R5, and a transistor Q1, where an emitter of the transistor Q1 is electrically connected to one end of the resistor R4 and configured to input the operating voltage, a collector of the transistor Q1 is configured to output the power supply, another end of the resistor R4 is electrically connected to a base of the transistor Q1 and one end of the resistor R5, respectively, and another end of the resistor R5 is configured to be electrically connected to the control unit and configured to receive the control signal.
In a certain embodiment, the utility model further comprises a communication interface, wherein the communication interface comprises a clock terminal, a data terminal, a power terminal and a grounding terminal, the power terminal is electrically connected with the working voltage output end of the power unit, the grounding terminal is grounded, and the clock terminal and the data terminal are electrically connected with the control unit.
In one embodiment, the utility model further comprises a load resistor, one end of the load resistor is electrically connected with the control unit, and the other end of the load resistor is configured to receive pulse signals
In a certain embodiment, the utility model further comprises a power interface comprising a second power terminal and a second ground terminal, the second power terminal being electrically connected to the power output of the switching unit, the second ground terminal being grounded.
In one embodiment, the present utility model further includes a key detection unit electrically connected to the control unit, wherein the key detection unit changes a detection signal input to the control unit from a first level state to a second level state when a key of the electric vehicle starts the electric vehicle.
In an embodiment, the key detection unit includes a resistor R2, a resistor R3, and a capacitor C1, where one end of the resistor R2 is electrically connected to one end of the resistor R3, one end of the capacitor C1, and the control unit, and is configured to output the detection signal, the other end of the resistor R3 is grounded, and the other end of the capacitor C1 is grounded.
Compared with the prior art, the utility model has the following beneficial effects: when the control chip of the electric vehicle instrument is halted, the control chip can be powered on and reset again through the electric vehicle instrument, so that the control chip can be powered on again without turning off an air switch in an electric vehicle seat to power on again, the operation is simple and convenient, and manual operation is not needed.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model in an embodiment;
FIG. 2 is a circuit diagram of a control unit and a load resistor in an embodiment;
FIG. 3 is a circuit diagram of a power unit and a switch unit in an embodiment;
FIG. 4 is a schematic diagram of a communication interface and a power interface in an embodiment;
fig. 5 is a circuit diagram of the key detection unit in the embodiment.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
As shown in fig. 1, an electric vehicle instrument panel crash prevention circuit comprises a control unit 1, a power supply unit 2, a switch unit 3, a communication interface 4, a power supply interface 5 and a key detection unit 6; the power supply unit 2 is used for providing working voltage for the control unit 1, the working voltage is input to the input end of the switch unit 3, the output end of the switch unit 3 is configured to provide power for a control chip of an electric vehicle instrument, the control unit 1 is electrically connected with the switch unit 3, and a control signal for controlling the on-off of the switch unit 3 is input to the switch unit 3; the control unit 1 is electrically connected with the communication interface 4, performs data interaction with external devices through the communication interface 4, the working voltage output end of the switch unit 3 is electrically connected with the power interface 5, and an external power line can be connected to the power interface 5 so as to supply power for a control chip of the electric vehicle, and the control unit 1 is electrically connected with the key detection unit 6.
When in actual use, the control chip of the electric vehicle instrument is enabled to send pulse signals to the control unit 1, and if the control unit 1 does not receive the pulse signals, the control chip is halted. Because the power of the control chip is provided by the output end of the switch unit 3, when the control unit 1 cannot receive the pulse signal, the control unit 1 controls the switch unit 3 to be disconnected and then connected, so that the power-on reset of the control chip is realized, and the control chip is prevented from being halted all the time.
Specifically, as shown in fig. 2, in this embodiment, the control unit 1 includes a single-chip microcomputer U2, and the model of the single-chip microcomputer U2 is MCU001. Pulse signals generated by the control chip are input to a six-pin of the singlechip U2 through the load resistor R1.
Specifically, as shown in fig. 3, the power supply unit 2 includes a capacitor C2, a capacitor C3, a capacitor C4, and a voltage conversion chip U1 with a model LN1152, where a first pin and a third pin of the voltage conversion chip U1 are electrically connected to one end of the capacitor C2, another end of the capacitor C2 is grounded, a second pin of the voltage conversion chip U1 is grounded, a fifth pin of the voltage conversion chip U1 is electrically connected to one end of the capacitor C3 and one end of the capacitor C4, and is configured to output an operating voltage, and another end of the capacitor C3 and another end of the capacitor C4 are both grounded. In actual use, the external input voltage can be converted into the operating voltage of the control unit 1 by the power supply unit 2, and the external operating voltage can be obtained according to the electric vehicle battery.
In a certain embodiment, the power supply unit 2 may select the remaining types of voltage conversion chips, and the selected voltage conversion chips only need to be capable of converting the external input voltage into the working voltage of the control unit 1.
Specifically, as shown in fig. 3, the switch unit 3 includes a resistor R4, a resistor R5, and a transistor Q1, wherein an emitter of the transistor Q1 is electrically connected to one end of the resistor R4 and is configured to input an operating voltage, a collector of the transistor Q1 is configured to output a power supply, another end of the resistor R4 is electrically connected to a base of the transistor Q1 and one end of the resistor R5, and another end of the resistor R5 is configured to be electrically connected to the control unit and is configured to receive a control signal. In actual use, the control unit 1 controls whether the switching unit 3 outputs the working voltage by controlling the on-off state of the triode Q1, when the triode Q1 is turned on, the switching unit 3 outputs the working voltage, and when the triode Q1 is turned off, the switching unit 3 does not output the working voltage.
Specifically, as shown in fig. 4, in the present embodiment, the communication interface 4 includes a clock terminal ICK, a data terminal IDA, a power supply terminal VCC and a ground terminal GND, the power supply terminal VCC is electrically connected to the operating voltage output terminal of the power supply unit 2, the ground terminal GND is grounded, and the clock terminal ICK and the data terminal IDA are electrically connected to the control unit 1. In actual use, the control unit 1 can interact with external devices via the communication interface 4.
Specifically, as shown in fig. 4, the power interface 5 includes a second power terminal v_out electrically connected to the power output terminal of the switching unit 2 and a second ground terminal gnd grounded. In actual use, an external power cord may be connected to the power interface 5 to power the control chip of the electric vehicle meter.
In addition, if the control chip is crashed during the start of the electric vehicle by inserting the key, the instrument panel still cannot work normally, so that in order to ensure the normal operation of the electric vehicle, the control chip needs to be powered on and reset during the start of the electric vehicle by inserting the key, therefore, the key detection unit 6 changes the detection signal input into the control unit 1 from the first level state to the second level state when the electric vehicle is started by the key of the electric vehicle, wherein the first level state is in the low level state, the second level state is in the high level state, the control unit 1 can control the switch unit 3 to be disconnected and then conducted firstly based on the level state change of the detection signal, and the control chip is prevented from being powered on and reset when the key is inserted into the electric vehicle to start the electric vehicle.
Specifically, as shown in fig. 5, the key detection unit 6 includes a resistor R2, a resistor R3, and a capacitor C1, where one end of the resistor R2 is electrically connected to one end of the resistor R3, one end of the capacitor C1, and the control unit 1, and is configured to output a detection signal, the other end of the resistor R3 is grounded, and the other end of the capacitor C1 is grounded.
In conclusion, when the control chip of the electric vehicle instrument is halted, the control chip can be powered on and reset again through the electric vehicle instrument, so that the control chip can be powered on again without turning off an air switch in the electric vehicle seat to be powered on again, the operation is simple and convenient, and manual operation is not needed.
The present utility model has been made in view of the above-described circumstances, and it is an object of the present utility model to provide a portable electronic device capable of performing various changes and modifications without departing from the scope of the technical spirit of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. The anti-dead-time circuit of the electric vehicle instrument panel is characterized by comprising a control unit, a load resistor, a power supply unit and a switch unit, wherein the power supply unit is used for providing working voltage for the control unit, the working voltage is input to the input end of the switch unit, the output end of the switch unit is configured to provide power for a control chip of the electric vehicle instrument, and the control unit is electrically connected with the switch unit and inputs a control signal for controlling the on-off of the switch unit; one end of the load resistor is electrically connected with the control unit, and the other end of the load resistor is configured to receive pulse signals.
2. The electric vehicle instrument panel crash prevention circuit according to claim 1, wherein the power supply unit comprises a capacitor C2, a capacitor C3, a capacitor C4 and a voltage conversion chip U1 with a model LN1152, a pin No. one and a pin No. three of the voltage conversion chip U1 are respectively electrically connected with one end of the capacitor C2, the other end of the capacitor C2 is grounded, a pin No. two of the voltage conversion chip U1 is grounded, a pin No. five of the voltage conversion chip U1 is respectively electrically connected with one end of the capacitor C3 and one end of the capacitor C4, and is configured to output the working voltage, and the other end of the capacitor C3 and the other end of the capacitor C4 are both grounded.
3. The electric vehicle instrument panel crash prevention circuit according to claim 1, wherein the switch unit comprises a resistor R4, a resistor R5 and a triode Q1, an emitter of the triode Q1 is electrically connected with one end of the resistor R4 and is configured to input the working voltage, a collector of the triode Q1 is configured to output the power supply, the other end of the resistor R4 is electrically connected with a base of the triode Q1 and one end of the resistor R5 respectively, and the other end of the resistor R5 is configured to be electrically connected with the control unit and is configured to receive the control signal.
4. The electric vehicle dashboard anti-crash circuit of claim 1 further comprising a communication interface including a clock terminal, a data terminal, a power terminal and a ground terminal, the power terminal electrically connected to the operating voltage output of the power unit, the ground terminal grounded, the clock terminal and the data terminal electrically connected to the control unit.
5. The electric vehicle dashboard anti-crash circuit of claim 1 further comprising a power interface including a second power terminal electrically connected to the power output of the switch unit and a second ground terminal grounded.
6. The electric vehicle dashboard anti-crash circuit according to any one of claims 1-5, further comprising a key detection unit electrically connected to the control unit, wherein the key detection unit changes a detection signal input to the control unit from a first level state to a second level state when a key of the electric vehicle starts the electric vehicle.
7. The electric vehicle instrument panel crash prevention circuit according to claim 6, wherein the key detection unit comprises a resistor R2, a resistor R3 and a capacitor C1, one end of the resistor R2 is electrically connected with one end of the resistor R3, one end of the capacitor C1 and the control unit respectively, and is configured to output the detection signal, the other end of the resistor R3 is grounded, and the other end of the capacitor C1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320681199.3U CN219891557U (en) | 2023-03-31 | 2023-03-31 | Anti-dead-time circuit for electric vehicle instrument panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320681199.3U CN219891557U (en) | 2023-03-31 | 2023-03-31 | Anti-dead-time circuit for electric vehicle instrument panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219891557U true CN219891557U (en) | 2023-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320681199.3U Active CN219891557U (en) | 2023-03-31 | 2023-03-31 | Anti-dead-time circuit for electric vehicle instrument panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219891557U (en) |
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2023
- 2023-03-31 CN CN202320681199.3U patent/CN219891557U/en active Active
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