CN214756056U - Vehicle-mounted power supply circuit adaptive to environment - Google Patents
Vehicle-mounted power supply circuit adaptive to environment Download PDFInfo
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- CN214756056U CN214756056U CN202022458469.3U CN202022458469U CN214756056U CN 214756056 U CN214756056 U CN 214756056U CN 202022458469 U CN202022458469 U CN 202022458469U CN 214756056 U CN214756056 U CN 214756056U
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Abstract
The utility model relates to a self-adaptation environment's vehicle mounted power supply circuit relates to vehicle mounted power supply technical field, has solved the in-process that uses invertion power supply under adverse circumstances among the prior art and has often got into the protection mode, introduction temperature signal processing circuit, and the sampling precision is low, and the real-time is poor, increases the cost of product and has reduced the reliability of power operation simultaneously again, is unfavorable for the technical problem who improves benefit and scale production. The technical characteristics include a single chip microcomputer MCU, MOS tubes Q1, Q2, Q3, Q4 and a four-way drive circuit; the source electrode of the MOS tube Q1 and the source electrode of the MOS tube Q3 are connected with one terminal of a high-voltage direct-current input source; the drain of MOS transistor Q2 and the drain of MOS transistor Q4 are connected to the other terminal of the high voltage DC input source. The method has the advantages that the method can effectively prevent a user from entering a protection mode frequently in the process of using the inverter power supply in a severe environment, the control mode is easy to realize, and no additional cost is added.
Description
Technical Field
The utility model relates to a vehicle mounted power supply technical field, in particular to vehicle mounted power supply circuit of self-adaptation environment.
Background
Although the traditional inverter power supply has a temperature protection function, the traditional inverter power supply only carries out temperature protection, namely, if the temperature reaches a set value in the using process of the inverter power supply, an inverter can cut off 220V output, so that the temperature protection function is realized, and the inverter power supply frequently enters a protection mode in the process of using the inverter power supply in a severe environment and belongs to a 'one-off' protection mode; a few power supplies have the function of automatically adjusting power along with temperature, but adopt thermistors for sampling and are processed by a temperature signal processing circuit, and the mode has the defects of low temperature sampling precision, poor real-time performance and incapability of reflecting the current temperature condition in time, and the introduction of the temperature signal processing circuit increases the cost of products, reduces the reliability of power supply operation and is not beneficial to improving benefit and scale production.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the in-process that uses invertion power supply under adverse circumstances among the prior art and frequently get into the protection mode, introduce temperature signal processing circuit, the sampling precision is low, and the real-time is poor, increases the cost of product and has reduced the reliability of power operation again simultaneously, is unfavorable for the technical problem who improves benefit and mass production, provides the name.
In order to solve the technical problem, the technical scheme of the utility model is specifically as follows:
an environment-adaptive on-board power supply circuit comprising:
the single chip microcomputer MCU, MOS pipe Q1, Q2, Q3, Q4 and four-way drive circuit;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q1 through a first path of driving circuit; the singlechip MCU is connected with the grid electrode of the MOS tube Q2 through a second path of driving circuit; the drain electrode of the MOS transistor Q1 and the source electrode of the MOS transistor Q2 are connected with the L output end of the alternating current power supply;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q3 through a third drive circuit; the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q4 through a fourth driving circuit; the drain electrode of the MOS transistor Q3 and the source electrode of the MOS transistor Q4 are connected with the N output end of the alternating current power supply;
the source electrode of the MOS tube Q1 and the source electrode of the MOS tube Q3 are connected with one terminal of a high-voltage direct-current input source; the drain of MOS transistor Q2 and the drain of MOS transistor Q4 are connected to the other terminal of the high voltage DC input source.
Further, the four-way driving circuit comprises resistors R1, R2, R3 and R4, and diodes D1, D2, D3 and D4; the resistor R1 and the diode D1 are connected in parallel to form a first path of driving circuit, one end of the resistor R1 is connected with the anode of the diode D1 and the grid of the MOS transistor Q1, and the other end of the resistor R1 is connected with the cathode of the diode D1 and the single-chip microcomputer MCU; a resistor R2 and a diode D2 are connected in parallel to form a second driving circuit, one end of a resistor R2 is connected with the anode of the diode D2 and the grid of the MOS transistor Q2, and the other end of the resistor R2 is connected with the cathode of the diode D2 and the single-chip microcomputer MCU; a resistor R3 and a diode D3 are connected in parallel to form a third driving circuit, one end of a resistor R3 is connected with the anode of the diode D3 and the grid of a MOS transistor Q3, and the other end of the resistor R3 is connected with the cathode of a diode D3 and the MCU; the resistor R4 and the diode D4 are connected in parallel to form a fourth driving circuit, one end of the resistor R4 is connected with the anode of the diode D4 and the grid of the MOS transistor Q4, and the other end of the resistor R4 is connected with the cathode of the diode D4 and the single chip microcomputer MCU.
Further, the model of the MCU of the singlechip is as follows: XMC 1302.
Furthermore, the singlechip MCU is provided with a temperature sensor.
The utility model discloses following beneficial effect has:
the utility model discloses an on-vehicle power supply circuit of self-adaptation environment, under adverse circumstances temperature, the power can normally work under the full load condition, and power output voltage is in normal range. When the external environment temperature rises, the duty ratio of 4 MOS tubes output and controlled by the single chip microcomputer is reduced, and the purpose of controlling the reduction of the output power is achieved. The inverter power supply protection method can effectively prevent a user from entering a protection mode frequently in the process of using the inverter power supply in a severe environment, the control mode is easy to realize, extra cost is not increased, and power is automatically adjusted along with temperature.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an environment-adaptive vehicle-mounted power supply circuit according to the present invention;
fig. 2 is a schematic flow diagram of the vehicle-mounted power supply circuit adaptive to the environment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, an environment-adaptive vehicle power circuit includes:
the single chip microcomputer MCU, MOS pipe Q1, Q2, Q3, Q4 and four-way drive circuit;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q1 through a first path of driving circuit; the singlechip MCU is connected with the grid electrode of the MOS tube Q2 through a second path of driving circuit; the drain electrode of the MOS transistor Q1 and the source electrode of the MOS transistor Q2 are connected with the L output end of the alternating current power supply;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q3 through a third drive circuit; the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q4 through a fourth driving circuit; the drain electrode of the MOS transistor Q3 and the source electrode of the MOS transistor Q4 are connected with the N output end of the alternating current power supply;
the source electrode of the MOS tube Q1 and the source electrode of the MOS tube Q3 are connected with one terminal of a high-voltage direct-current input source; the drain electrode of the MOS tube Q2 and the drain electrode of the MOS tube Q4 are connected with the other terminal of the high-voltage direct-current input source.
The four-way driving circuit comprises resistors R1, R2, R3 and R4 and diodes D1, D2, D3 and D4; the resistor R1 and the diode D1 are connected in parallel to form a first path of driving circuit, one end of the resistor R1 is connected with the anode of the diode D1 and the grid of the MOS transistor Q1, and the other end of the resistor R1 is connected with the cathode of the diode D1 and the single-chip microcomputer MCU; a resistor R2 and a diode D2 are connected in parallel to form a second driving circuit, one end of a resistor R2 is connected with the anode of the diode D2 and the grid of the MOS transistor Q2, and the other end of the resistor R2 is connected with the cathode of the diode D2 and the single-chip microcomputer MCU; a resistor R3 and a diode D3 are connected in parallel to form a third driving circuit, one end of a resistor R3 is connected with the anode of the diode D3 and the grid of a MOS transistor Q3, and the other end of the resistor R3 is connected with the cathode of a diode D3 and the MCU; the resistor R4 and the diode D4 are connected in parallel to form a fourth driving circuit, one end of the resistor R4 is connected with the anode of the diode D4 and the grid of the MOS transistor Q4, and the other end of the resistor R4 is connected with the cathode of the diode D4 and the single chip microcomputer MCU.
The model of the MCU of the singlechip is as follows: XMC 1302.
The temperature sensor of singlechip MCU self-bring.
Specifically, the hardware circuit only needs a power output control circuit, and does not need an additional temperature acquisition circuit and a temperature processing circuit, so that the reliability of the power supply is improved, and the cost of the power supply is not increased; the power output control circuit consists of a single chip microcomputer MCU, MOS tubes Q1, Q2, Q3 and Q4; one terminal of the high-voltage direct-current voltage input source is connected to the MCU through the MOS tube Q1 and then is converted into an L output end of the alternating-current power supply through the MOS tube Q2; the other terminal of the high-voltage direct-current voltage input source is connected to the MCU through the MOS tube Q3 and then is converted into the N output end of the alternating-current power supply through the MOS tube Q4; the software core control idea is that the measurement result of the current temperature is directly indicated through a temperature sensor of the single chip microcomputer, the result directly participates in control, and whether the current temperature is larger than a set value or not is judged through the single chip microcomputer, so that the amplitude of the output voltage is determined.
The circuit only needs a power output control circuit; the power output control circuit consists of a single chip microcomputer MCU, MOS tubes Q1, Q2, Q3 and Q4; one terminal of the high-voltage direct-current voltage input source is connected to the MCU through the MOS tube Q1 and then is converted into an L output end of the alternating-current power supply through the MOS tube Q2; the other terminal of the high-voltage direct-current voltage input source is connected to the MCU through the MOS tube Q3 and then is converted into the N output end of the alternating-current power supply through the MOS tube Q4.
Preferably, the model of the MCU of the singlechip is as follows: XMC 1302. The single chip microcomputer MCU has a temperature sensor, directly indicates the test result of the current temperature, is very convenient to use, and has high temperature sampling precision and good real-time property.
In addition, in this embodiment, only the signal of the MCU of the single chip microcomputer in the best embodiment is mentioned, and the MCU with the same function can be replaced.
With reference to the flow chart of the program control shown in fig. 2, the main control chip is used for collecting temperature and detecting whether the temperature is higher than a set value, and when the temperature is lower than the set temperature value, the temperature coefficient is 1, so that the control system does not participate in the temperature coefficient; when the detected temperature is higher than the set value, the temperature coefficient is lower than 1, and the detected temperature participates in the voltage control system according to a certain proportion to control the amplitude of the output voltage, so that the output power is controlled.
The utility model discloses a beneficial improvement of making on the basis to current invertion power supply has very important practical meaning. Once the temperature is too high in the using process of a user, the inverter power supply performs power reduction control output, so that the product can continuously work at a higher temperature. When the ambient temperature is 72 degrees or below 72 degrees, the power supply can normally work under the condition of full load, and the output voltage of the power supply is in a normal range.
Namely, the utility model discloses can effectually prevent that the user from using inverter's in-process under adverse circumstances to enter the protection mode regularly, control mode easily realizes moreover, need not increase extra cost, and the utmost point has market competition.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (1)
1. An environment-adaptive on-board power supply circuit, comprising:
the single chip microcomputer MCU, MOS pipe Q1, Q2, Q3, Q4 and four-way drive circuit;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q1 through a first path of driving circuit; the singlechip MCU is connected with the grid electrode of the MOS tube Q2 through a second path of driving circuit; the drain electrode of the MOS transistor Q1 and the source electrode of the MOS transistor Q2 are connected with the L output end of the alternating current power supply;
the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q3 through a third drive circuit; the single chip microcomputer MCU is connected with a grid electrode of the MOS tube Q4 through a fourth driving circuit; the drain electrode of the MOS transistor Q3 and the source electrode of the MOS transistor Q4 are connected with the N output end of the alternating current power supply;
the source electrode of the MOS tube Q1 and the source electrode of the MOS tube Q3 are connected with one terminal of a high-voltage direct-current input source; the drain electrode of the MOS tube Q2 and the drain electrode of the MOS tube Q4 are connected with the other terminal of the high-voltage direct-current input source;
the four-way driving circuit comprises resistors R1, R2, R3 and R4 and diodes D1, D2, D3 and D4; the resistor R1 and the diode D1 are connected in parallel to form a first path of driving circuit, one end of the resistor R1 is connected with the anode of the diode D1 and the grid of the MOS transistor Q1, and the other end of the resistor R1 is connected with the cathode of the diode D1 and the single-chip microcomputer MCU; a resistor R2 and a diode D2 are connected in parallel to form a second driving circuit, one end of a resistor R2 is connected with the anode of the diode D2 and the grid of the MOS transistor Q2, and the other end of the resistor R2 is connected with the cathode of the diode D2 and the single-chip microcomputer MCU; a resistor R3 and a diode D3 are connected in parallel to form a third driving circuit, one end of a resistor R3 is connected with the anode of the diode D3 and the grid of a MOS transistor Q3, and the other end of the resistor R3 is connected with the cathode of a diode D3 and the MCU; a resistor R4 and a diode D4 are connected in parallel to form a fourth driving circuit, one end of a resistor R4 is connected with the anode of the diode D4 and the grid of the MOS transistor Q4, and the other end of the resistor R4 is connected with the cathode of the diode D4 and the single-chip microcomputer MCU;
the model of the MCU of the singlechip is as follows: XMC 1302;
the temperature sensor of singlechip MCU self-bring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458469.3U CN214756056U (en) | 2020-10-29 | 2020-10-29 | Vehicle-mounted power supply circuit adaptive to environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458469.3U CN214756056U (en) | 2020-10-29 | 2020-10-29 | Vehicle-mounted power supply circuit adaptive to environment |
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| Publication Number | Publication Date |
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| CN214756056U true CN214756056U (en) | 2021-11-16 |
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| CN202022458469.3U Active CN214756056U (en) | 2020-10-29 | 2020-10-29 | Vehicle-mounted power supply circuit adaptive to environment |
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Effective date of registration: 20230801 Address after: No. 118-1 Dongfeng Street, High tech Industrial Development Zone, Changchun City, Jilin Province, 130000 Patentee after: Changchun Xinlian Technology Co.,Ltd. Address before: 130000 room 311, third floor, No. 118-1, Dongfeng Street, high tech Industrial Development Zone, Changchun City, Jilin Province Patentee before: Changchun Tongyuan Zhihe Technology Co.,Ltd. |
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