CN212796765U - Vehicle-mounted power consumption control device, vehicle-mounted information entertainment system and vehicle - Google Patents
Vehicle-mounted power consumption control device, vehicle-mounted information entertainment system and vehicle Download PDFInfo
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- CN212796765U CN212796765U CN202021017544.6U CN202021017544U CN212796765U CN 212796765 U CN212796765 U CN 212796765U CN 202021017544 U CN202021017544 U CN 202021017544U CN 212796765 U CN212796765 U CN 212796765U
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Abstract
The utility model provides a vehicle-mounted power consumption control device, vehicle-mounted information entertainment system and vehicle. The vehicle-mounted power consumption control device comprises a signal bus transceiver, a switching circuit, a processor power conversion circuit and a peripheral power conversion circuit. The signal bus transceiver is connected with the vehicle-mounted bus, the switching circuit and the processor, and outputs the received on-off signals to the switching circuit and the processor; the processor is connected with the switching circuit and the external power supply conversion circuit and outputs a first control signal to the switching circuit and a second control signal to the external power supply conversion circuit; the switch circuit is respectively connected with the vehicle-mounted power supply and the processor power supply conversion circuit and transmits voltage to the processor power supply conversion circuit in a starting state; the processor power supply conversion circuit is connected with the processor, converts the voltage transmitted by the switch circuit into the processor working voltage and outputs the processor working voltage to the processor. After the switch circuit is closed, the processor is in a power-off state, so that the power consumption of the processor is reduced.
Description
Technical Field
The utility model relates to an on-vehicle consumption technical field especially relates to an on-vehicle consumption controlling means, on-vehicle infotainment system and vehicle.
Background
When the existing vehicle is in an un-started state, the processor in the vehicle-mounted electronic equipment still consumes the electric energy of the vehicle. For example, a single chip microcomputer in the vehicle-mounted electronic device is connected with a battery in the vehicle and is always in a power utilization state. As the external ambient temperature increases or decreases, the temperature of the processor inside the in-vehicle electronic apparatus also increases or decreases. Due to the physical characteristics of the processor, the leakage current of the processor can be increased in a high-temperature or low-temperature environment, so that the quiescent current of the vehicle-mounted electronic equipment is increased, and the electric quantity loss is further increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reduce quiescent current loss's on-vehicle consumption controlling means, on-vehicle infotainment system and vehicle.
Particularly, the utility model provides an on-vehicle consumption controlling means, include:
the system comprises a signal bus transceiver, a switching circuit, a processor power conversion circuit and a peripheral power conversion circuit;
the signal bus transceiver is respectively connected with the vehicle-mounted bus, the switch circuit and the processor and is configured to output the on-off signal received by the vehicle-mounted bus to the switch circuit and the processor;
the processor is connected with the switching circuit and the peripheral power conversion circuit, and is configured to receive the on-off signal and output a first control signal to the switching circuit and a second control signal to the peripheral power conversion circuit;
the switching circuit is respectively connected with a vehicle-mounted power supply and the processor power supply conversion circuit, is configured to respond to the on-off signal and the first control signal, transmits the voltage output by the vehicle-mounted power supply to the processor power supply conversion circuit in an on state, and disconnects the connection between the vehicle-mounted power supply and the processor power supply conversion circuit in an off state;
the processor power supply conversion circuit is connected with the processor and is configured to convert the voltage transmitted by the switch circuit into the processor working voltage and output the processor working voltage to the processor;
and the peripheral power supply conversion circuit is connected with the external equipment and is configured to respond to the second control signal, convert the voltage transmitted by the switch circuit into the working voltage of the external equipment and output the working voltage to the external equipment.
Optionally, the vehicle power consumption control device further includes a filter circuit;
the filter circuit is respectively connected with the switch circuit, the processor power conversion circuit and the peripheral power conversion circuit, and is configured to filter the voltage output by the vehicle-mounted power transmitted by the switch circuit and then respectively output the filtered voltage to the processor power conversion circuit and the peripheral power conversion circuit.
Optionally, the switching circuit comprises:
the source electrode of the PMOS switching tube is connected with the vehicle-mounted power supply, the drain electrode of the PMOS switching tube is connected with the processor power supply conversion circuit and the peripheral power supply conversion circuit, and a first resistor is connected between the grid electrode of the PMOS switching tube and the source electrode;
the anode of the first diode is connected with the signal bus transceiver, and the anode of the first diode receives the startup and shutdown signal;
the anode of the second diode is connected with the processor, the cathode of the first diode is connected with the cathode of the second diode and then connected with the base electrode of the triode, and the anode of the second diode receives the first control signal;
and the base electrode of the triode is connected with the emitting electrode, the emitting electrode is grounded, and the collector electrode of the triode is connected with the grid electrode of the PMOS switching tube through a second resistor.
Optionally, the vehicle-mounted power consumption control apparatus further includes: a third resistor and a capacitor;
the cathodes of the first diode and the second diode are connected and then connected with the base electrode of the triode through the third resistor, and the base electrode of the triode is grounded through the capacitor.
Optionally, the processor is a single chip microcomputer.
Optionally, the signal bus transceiver is one of:
a controller local area network bus transceiver, a local internet bus transceiver and a FlexRay bus transceiver.
According to the utility model discloses an on-vehicle infotainment system is still provided to another aspect, include above-mentioned arbitrary on-vehicle consumption controlling means.
According to another aspect of the utility model, still provide a vehicle, including the aforesaid on-vehicle infotainment system.
In the vehicle-mounted power consumption control device of the embodiment, after the switch circuit is closed, the processor is in a power-off state, and only the signal bus transceiver is in a power utilization state, so that the power consumption of the processor is reduced. Under the state that the treater is in the outage, even the temperature of external environment risees or reduces, can prevent the increase of the leakage current of the treater among the on-vehicle consumption controlling means to can prevent that quiescent current is too big, practice thrift the electric energy, prolong the live time of the battery of vehicle.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of an in-vehicle power consumption control apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an in-vehicle power consumption control apparatus according to another embodiment of the present invention;
FIG. 3 is a schematic block diagram of the switching circuit of FIGS. 1 and 2;
fig. 4 is a schematic structural diagram of an in-vehicle infotainment system according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of an in-vehicle power consumption control apparatus 100 according to an embodiment of the present invention. Referring to fig. 1, the in-vehicle power consumption control apparatus 100 may generally include a signal bus transceiver 102, a switching circuit 104, a processor 108, a processor power conversion circuit 106, and a peripheral power conversion circuit 110. The signal bus transceiver 102 is connected to a vehicle bus (not shown), a switching circuit 104, and a processor 108, respectively. The signal bus transceiver 102 is adapted to output on and off signals received to the on-board bus to the switching circuitry 104 and the processor 108. The processor 108 is connected to the switching circuit 104 and the peripheral power conversion circuit 110, respectively. The processor 108 is adapted to receive the power on/off signal and output a first control signal to the switching circuit 104 and a second control signal to the external power conversion circuit 110. The switching circuit 104 is connected to the in-vehicle power supply and the processor power supply switching circuit 106, respectively. The switching circuit 104 is adapted to respond to the power-on/off signal and the first control signal, and to transmit the voltage output by the vehicle-mounted power supply to the processor power conversion circuit 106 in an on state, and to disconnect the vehicle-mounted power supply from the processor power conversion circuit 106 in an off state. The processor power conversion circuit 106 is coupled to the processor 108. The processor power conversion circuit 106 is adapted to convert the voltage transmitted by the switch circuit 104 into an operating voltage of the processor 108 and output the operating voltage to the processor 108. The peripheral power conversion circuit 110 is connected to the switch circuit 104 and the external device, respectively. The peripheral power conversion circuit 110 is adapted to respond to the second control signal, convert the voltage transmitted by the switch circuit 104 into the operating voltage of the external device, and output the operating voltage to the external device.
In the in-vehicle power consumption control apparatus 100 of the present embodiment, the on/off signal generated by the vehicle is transmitted to the signal bus transceiver 102 via the in-vehicle bus. After the vehicle is started, a power-on signal may be generated and sent to the signal bus transceiver 102 through the vehicle bus, where the power-on signal may be a high level signal. The shutdown signal, which may be a low level signal, may be sent to the signal bus transceiver 102 via the vehicle bus after the vehicle is turned off. The signal bus transceiver 102 may be a Controller Area Network (CAN) or Local Interconnect Network (LIN) bus transceiver. Of course, the signal bus transceiver 102 may also be a FlexRay bus transceiver or other types of signal bus transceivers, which are not specifically limited by the embodiments of the present invention. The onboard power source may be a battery on the vehicle.
The processor 108 may be a single chip microcomputer, such as rassa RH850 or V850. Of course, the processor 108 may also be a single chip microcomputer of SPC5748G or SPC5744 type, and the embodiment of the present invention is not particularly limited thereto. The processor power conversion circuit 106 and the peripheral power conversion circuit 110 are used for performing voltage reduction processing on the voltage of the vehicle-mounted power supply to obtain a required working voltage, and the processor power conversion circuit 106 and the peripheral power conversion circuit 110 may be, for example, an integrated circuit of MPQ9841, MAX20075, LMR33630 model, or of course, an LDO linear power supply, etc., to which the present invention is not specifically limited. The external devices may include radio modules, video processing modules, audio processing modules, memory modules, and the like.
After the switch circuit 104 is turned off, the processor 108 is in a power-off state, and only the signal bus transceiver 102 is in a power-on state, thereby reducing the power consumption of the processor 108. In the power-off state of the processor 108, even if the temperature of the external environment rises or falls, the increase of the leakage current of the processor 108 in the vehicle-mounted power consumption control device 100 can be prevented, so that the excessive quiescent current can be prevented, the electric energy can be saved, and the service life of the battery of the vehicle can be prolonged. Specifically, for example, in a state where the processor 108 is powered off, the in-vehicle power consumption control device 100 may control the quiescent current to be 100uA or even below 50 uA.
The specific operation mode of the in-vehicle power consumption control device 100 is as follows: the signal bus transceiver 102, upon receiving the power-on signal, outputs the power-on signal to the switch circuit 104 and the processor 108. The switch circuit 104 is turned on after receiving the power-on signal, and transmits the voltage output by the vehicle power supply to the processor power conversion circuit 106 and the peripheral power conversion circuit 110. The processor power conversion circuit 106 converts the voltage transmitted by the switch circuit 104 into a working voltage of the processor 108 and outputs the working voltage to the processor 108. The processor 108 receives the operating voltage and responds to the start-up signal to output a first control signal to the switch circuit 104 and a second control signal to the external power conversion circuit 110. The first control signal and the second control signal output by the processor 108 after being activated in response to the power-on signal may both be high level signals. The switch circuit 104 is turned on when receiving one of the first control signal and the power-on signal.
The signal bus transceiver 102, upon receiving the shutdown signal, outputs the shutdown signal to the switching circuit 104 and the processor 108. Although the switch circuit 104 receives the power-off signal, the switch circuit 104 is still turned on because the switch circuit 104 is turned on when receiving one of the first control signal of high level and the power-on signal. The processor 108 is also in a powered-up state. The processor 108 has sufficient time to perform the shutdown task. The first control signal and the second control signal output by the processor 108 in response to the shutdown signal may each be low level signals.
Specifically, for example, the processor 108 outputs the low level second control signal to the peripheral power conversion circuit 110 to turn off the peripheral power conversion circuit 110 and outputs the low level first control signal to the switch circuit 104. The switch circuit 104 is turned off after receiving the shutdown signal and receiving the first control signal of the low level.
After the switching circuit 104 is turned off, the processor 108 is turned off. Specifically, for example, after the switching circuit 104 is turned off, the processor 108 is disconnected from the in-vehicle power supply. The processor 108 is turned off due to an undervoltage condition after it drains the amount of power stored in the storage element, such as its own capacitor. The vehicle-mounted power consumption control device 100 closes the switch circuit 104 in the above manner, so that the switch circuit 104 can be prevented from being immediately closed after receiving a shutdown signal, thereby preventing the processor 108 from being closed, providing time for closing the external device according to a related shutdown process for the processor 108 to close the external power conversion circuit 110, and preventing other external devices connected with the vehicle-mounted power consumption control device 100 from being suddenly powered off, thereby protecting the vehicle-mounted power consumption control device 100 and the external devices connected with the vehicle-mounted power consumption control device 100, and improving the stability of the vehicle-mounted power consumption control device 100.
One or more peripheral power conversion circuits 110 may be provided. When there are a plurality of peripheral power conversion circuits 110, the processor 108 may output one control signal group (i.e., a plurality of second control signals) to control each peripheral power conversion circuit 110.
Referring to fig. 2, in an embodiment of the present invention, the vehicle power consumption control apparatus 100 may further include a filter circuit 114. The filter circuit 114 is connected to the switch circuit 104, the processor power conversion circuit 106, and the peripheral power conversion circuit 110, respectively. The filter circuit 114 is adapted to filter the voltage output by the vehicle-mounted power supply transmitted by the switch circuit 104 and output the filtered voltage to the processor power conversion circuit 106 and the peripheral power conversion circuit 110, respectively.
In this embodiment, the filter circuit 114 may be an LC filter circuit composed of an inductor and a capacitor, and certainly may also be a capacitor or an inductor, or a filter circuit composed of a capacitor and an inductor, and the embodiment of the present invention does not specifically limit this.
Referring to fig. 3, in an embodiment of the present invention, the switch circuit 104 may include a PMOS switch transistor Q3, a first diode D1, a second diode D2, and a transistor Q4. The PMOS switch Q3 has a source connected to the vehicle power supply, a drain connected to the processor 108 power conversion circuit 106 and the peripheral power conversion circuit 110, and a first resistor R72 connected between the gate and the source. The anode of the first diode D1 is connected to the signal bus transceiver 102. The anode of the first diode D1 receives a switch off signal. The anode of the second diode D2 is connected to the processor 108. The cathode of the first diode D1 is connected to the cathode of the second diode D2 and then to the base of the transistor Q4. The anode of the second diode D2 receives the first control signal. The base and emitter of transistor Q4 are connected, and the emitter is grounded. The collector of the transistor Q4 is connected to the gate of the PMOS transistor Q3 via a second resistor R73.
In the present embodiment, the switching circuit 104 operates as follows: the signal bus transceiver 102 receives the power-on signal from the vehicle bus, identifies and outputs a high-level pair power-on signal. The anode of the first diode D1 is turned on by receiving a high power-on signal from the signal bus transceiver 102. The first diode D1 turns on to provide a high level to the base of transistor Q4, which turns on transistor Q4. After the transistor Q4 is turned on, the gate of the PMOS switch Q3 is grounded, the gate of the PMOS switch Q3 is at a low level, and the PMOS switch Q3 is turned on, so that the voltage output by the vehicle power supply 120 is transmitted to the processor power conversion circuit 106 and the peripheral power conversion circuit 110. The processor 108 is then powered on, and after the start is completed, the processor receives and recognizes the high-level power-on signal, and then sends the high-level first control signal to the anode of the second diode D2, and then starts to control the peripheral power conversion circuit 110 to be turned on according to the logic. The anode of the second diode D2 receives the first control signal with high level to conduct. Only one of the first diode D1 and the second diode D2 needs to be turned on, and the transistor Q4 can be turned on, so that the PMOS switch Q3 is turned on.
When the signal bus transceiver 102 receives a shutdown signal from the vehicle bus, it recognizes and outputs a shutdown signal within the low-level pair. The anode of the first diode D1 is turned off after receiving the power-off signal from the signal bus transceiver 102, and the second diode D2 is still in a conducting state. Therefore, the level of the base of transistor Q4 remains high. Transistor Q4 and PMOS switch Q3 are still in a conducting state. The processor 108 turns off the peripheral power conversion circuit 110 according to logic after receiving the shutdown signal, each peripheral stops working, the processor 108 outputs a first control signal of low level to the anode of the second diode D2, and then the processor 108 turns off its own power. The second diode D2 is turned off. In this case, the base of transistor Q4 is low and transistor Q4 is off. After the triode Q4 is turned off, the source of the PMOS switch Q3 is disconnected from ground, the source and the gate of the PMOS switch Q3 have the same voltage, the PMOS switch Q3 cannot be turned on, and the voltage of the vehicle power supply is no longer transmitted to the processor power conversion circuit 106 and the peripheral power conversion circuit 110.
With continued reference to fig. 3, in an embodiment of the present invention, the switch circuit 104 may further include a third resistor R71 and a capacitor C29. The cathodes of the first diode D1 and the second diode D2 are connected and then connected with the base of the triode Q4 through the third resistor R71, and the base of the triode Q4 is grounded through the capacitor C29. The third resistor R71 and the capacitor C29 may filter signals output from the first diode D1 and the second diode D2.
Referring to fig. 4, based on the same concept, the present invention further provides a vehicle infotainment system 200. The in-vehicle infotainment system 200 may include the in-vehicle power consumption control apparatus 100 of any of the above embodiments. Specifically, the display in the in-vehicle infotainment system 200 may be connected to the peripheral power conversion circuit 110 in the in-vehicle power consumption control apparatus 100.
Based on the same conception the utility model also provides a vehicle. The vehicle includes the in-vehicle infotainment system 200 of the above-described embodiment. The vehicle may be connected to the signal bus transceiver 102 in the in-vehicle infotainment system 200 via an in-vehicle bus. After the vehicle is started, a power-on signal may be sent over the vehicle bus to the signal bus transceiver 102 in the in-vehicle infotainment system 200. The shutdown signal may be sent over the vehicle bus to the signal bus transceiver 102 in the in-vehicle infotainment system 200 after the vehicle is turned off.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. A vehicle-mounted power consumption control device is characterized by comprising a signal bus transceiver, a switching circuit, a processor power conversion circuit and an external power conversion circuit;
the signal bus transceiver is respectively connected with the vehicle-mounted bus, the switch circuit and the processor and is configured to output the on-off signal received by the vehicle-mounted bus to the switch circuit and the processor;
the processor is connected with the switching circuit and the peripheral power conversion circuit, and is configured to receive the on-off signal and output a first control signal to the switching circuit and a second control signal to the peripheral power conversion circuit;
the switching circuit is respectively connected with a vehicle-mounted power supply and the processor power supply conversion circuit, is configured to respond to the on-off signal and the first control signal, transmits the voltage output by the vehicle-mounted power supply to the processor power supply conversion circuit in an on state, and disconnects the connection between the vehicle-mounted power supply and the processor power supply conversion circuit in an off state;
the processor power supply conversion circuit is connected with the processor and is configured to convert the voltage transmitted by the switch circuit into the processor working voltage and output the processor working voltage to the processor;
and the peripheral power supply conversion circuit is connected with the external equipment and is configured to respond to the second control signal, convert the voltage transmitted by the switch circuit into the working voltage of the external equipment and output the working voltage to the external equipment.
2. The in-vehicle power consumption control device according to claim 1, characterized by further comprising a filter circuit;
the filter circuit is respectively connected with the switch circuit, the processor power conversion circuit and the peripheral power conversion circuit, and is configured to filter the voltage output by the vehicle-mounted power transmitted by the switch circuit and then respectively output the filtered voltage to the processor power conversion circuit and the peripheral power conversion circuit.
3. The in-vehicle power consumption control device according to claim 1, wherein the switch circuit includes:
the source electrode of the PMOS switching tube is connected with the vehicle-mounted power supply, the drain electrode of the PMOS switching tube is connected with the processor power supply conversion circuit and the peripheral power supply conversion circuit, and a first resistor is connected between the grid electrode of the PMOS switching tube and the source electrode;
the anode of the first diode is connected with the signal bus transceiver, and the anode of the first diode receives the startup and shutdown signal;
the anode of the second diode is connected with the processor, the cathode of the first diode is connected with the cathode of the second diode and then connected with the base electrode of the triode, and the anode of the second diode receives the first control signal;
and the base electrode of the triode is connected with the emitting electrode, the emitting electrode is grounded, and the collector electrode of the triode is connected with the grid electrode of the PMOS switching tube through a second resistor.
4. The in-vehicle power consumption control device according to claim 3, characterized by further comprising: a third resistor and a capacitor;
the cathodes of the first diode and the second diode are connected and then connected with the base electrode of the triode through the third resistor, and the base electrode of the triode is grounded through the capacitor.
5. The in-vehicle power consumption control device according to claim 1,
the processor is a single chip microcomputer.
6. The in-vehicle power consumption control device according to claim 1, wherein the signal bus transceiver is one of:
a controller local area network bus transceiver, a local internet bus transceiver and a FlexRay bus transceiver.
7. An in-vehicle infotainment system characterized by comprising the in-vehicle power consumption control apparatus according to any one of claims 1 to 6.
8. A vehicle comprising the in-vehicle infotainment system of claim 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021017544.6U CN212796765U (en) | 2020-06-05 | 2020-06-05 | Vehicle-mounted power consumption control device, vehicle-mounted information entertainment system and vehicle |
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| CN202021017544.6U CN212796765U (en) | 2020-06-05 | 2020-06-05 | Vehicle-mounted power consumption control device, vehicle-mounted information entertainment system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665508A (en) * | 2021-07-15 | 2021-11-19 | 深圳市有为信息技术发展有限公司 | Automatic start-stop device, vehicle-mounted terminal and commercial vehicle |
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2020
- 2020-06-05 CN CN202021017544.6U patent/CN212796765U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113665508A (en) * | 2021-07-15 | 2021-11-19 | 深圳市有为信息技术发展有限公司 | Automatic start-stop device, vehicle-mounted terminal and commercial vehicle |
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Effective date of registration: 20220322 Address after: 430051 No. b1336, chuanggu startup area, taizihu cultural Digital Creative Industry Park, No. 18, Shenlong Avenue, Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province Patentee after: Yikatong (Hubei) Technology Co.,Ltd. Address before: No.c101, chuanggu start up area, taizihu cultural Digital Industrial Park, No.18 Shenlong Avenue, Wuhan Economic Development Zone, Hubei Province Patentee before: HUBEI ECARX TECHNOLOGY Co.,Ltd. |