CN215705693U - Low-power-consumption power supply in electric vehicle circuit system - Google Patents
Low-power-consumption power supply in electric vehicle circuit system Download PDFInfo
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- CN215705693U CN215705693U CN202120870884.1U CN202120870884U CN215705693U CN 215705693 U CN215705693 U CN 215705693U CN 202120870884 U CN202120870884 U CN 202120870884U CN 215705693 U CN215705693 U CN 215705693U
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Abstract
The utility model discloses a low-power-consumption power supply in an electric vehicle circuit system, which comprises a BUCK circuit electrically connected between a power supply input end and a power supply output end, wherein the BUCK circuit comprises an MOS tube Q1, an inductor L, a diode D, a capacitor C and a pulse signal source, the grid electrode of the MOS tube Q1 is connected with the pulse signal source, the drain electrode of the MOS tube Q1 is electrically connected with the power supply input end, the source electrode of the MOS tube Q1 is electrically connected with the current input end of the inductor L, the current output end of the inductor L is connected with the power supply output end, the cathode of the diode D is connected between the source electrode of the MOS tube Q1 and the inductor L, the anode of the diode D is grounded, the anode of the capacitor C is connected with the current output end of the inductor L, and the cathode of the capacitor C is grounded, the power supply in the scheme has the advantage of extremely low power consumption.
Description
Technical Field
The utility model belongs to the field of power supply systems, and particularly relates to a low-power-consumption power supply in a circuit system of an electric vehicle.
Background
In electric motor car battery BMS management system, the power that needs the low-power consumption carries out the standby to system circuit, generally adopts button cell as the power, but it needs periodic replacement, and is comparatively troublesome.
Disclosure of Invention
The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a low-power-consumption power supply in an electric vehicle circuit system, which can replace a button battery to be integrated in a system circuit.
The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a low-power consumption power among electric motor car circuit system, includes the BUCK circuit of electric connection between power input end and power output end, the BUCK circuit includes MOS pipe Q1, inductance L, diode D, electric capacity C and pulse signal source, MOS pipe Q1's grid is connected in pulse signal source, MOS pipe Q1's drain electrode electric connection is in power input end, MOS pipe Q1's source electrode electric connection is in inductance L's current input end, inductance L's current output end is connected in power output end, diode D's negative pole is connected between MOS pipe Q1's source electrode and inductance L, diode D's positive pole ground connection, electric capacity C's positive pole is connected in inductance L's current output end, just electric capacity C's negative pole end ground connection.
Further, a MOS tube Q2 is arranged between the pulse signal source and the MOS tube Q1, the gate of the MOS tube Q2 is connected to the pulse signal source, the source of the MOS tube Q2 is grounded, the drain of the MOS tube Q2 is connected to the gate of the MOS tube Q1, and the drain of the MOS tube Q2 is connected to the power input end.
The feedback protection circuit further comprises a diode voltage-stabilizing tube DW, wherein the positive end of the diode voltage-stabilizing tube DW is connected to the positive end of the capacitor C, the negative end of the diode voltage-stabilizing tube DW is connected to the feedback protection circuit, and the negative end of the diode voltage-stabilizing tube DW is connected to the output end of the power supply.
Further, the feedback protection circuit further comprises a MOS transistor Q3, the drain of the MOS transistor Q3 is connected to the gate of the MOS transistor Q2, the gate of the MOS transistor Q3 is connected to the feedback protection circuit, and the source of the MOS transistor Q3 is grounded.
Furthermore, the feedback protection circuit is a voltage measurement module.
Furthermore, the three-pole voltage regulator tube further comprises a three-pole voltage regulator tube, the input end of the three-pole voltage regulator tube is connected to the positive end of the capacitor C, the output end of the three-pole voltage regulator tube is connected to the output end of the power supply, and the grounding end of the three-pole voltage regulator tube is grounded.
Has the advantages that: the power supply can be integrated in a system circuit instead of a button battery and can also be used in a system requiring low power consumption.
Drawings
FIG. 1 is an overall circuit schematic of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, a low power consumption power supply in electric vehicle circuit system, includes BUCK circuit 1 of electric connection between power input end and power output end, BUCK circuit 1 includes MOS transistor Q1, inductance L, diode D, electric capacity C and pulse signal source 2, MOS transistor Q1's grid is connected in pulse signal source 2, MOS transistor Q1's drain electrode electric connection is in power input end, MOS transistor Q1's source electrode electric connection is in inductance L's current input end, inductance L's current output end is connected in power output end, diode D's negative pole is connected between MOS transistor Q1's source electrode and inductance L, diode D's positive pole ground connection, electric capacity C's positive pole is connected in inductance L's current output end, just electric capacity C's negative pole end ground connection. The utility model can replace button cell to integrate in system circuit, also can be used in system with very low power consumption, the output uses the open loop control mode, the peripheral device is few, the power in this scheme has the advantage of very low power consumption. For example, in an application outputting 10mA, the input current is less than 1 mA.
Be provided with MOS pipe Q2 between pulse signal source 2 and MOS pipe Q1, MOS pipe Q2's grid is connected in pulse signal source, MOS pipe Q2's source ground connection, MOS pipe Q2's drain electrode is connected in MOS pipe Q1's grid, just MOS pipe Q2's drain electrode is connected in power input end.
The pulse signal source is an oscillator which generates pulse waves, the duty ratio can be very small and can reach a few percent, and the frequency can also be very low and can reach below 1 Hz. The pulse wave generated by the oscillator is used for driving the low-voltage MOS through the low-voltage driving circuit, so that the high-voltage MOS is pushed to charge the rear stage periodically.
The feedback protection circuit further comprises a diode voltage-stabilizing tube DW, wherein the positive end of the diode voltage-stabilizing tube DW is connected to the positive end of the capacitor C, the negative end of the diode voltage-stabilizing tube DW is connected to the feedback protection circuit, and the negative end of the diode voltage-stabilizing tube DW is connected to the output end of the power supply. The feedback protection circuit further comprises a MOS tube Q3, the drain electrode of the MOS tube Q3 is connected to the grid electrode of the MOS tube Q2, the grid electrode of the MOS tube Q3 is connected to the feedback protection circuit, and the source electrode of the MOS tube Q3 is grounded. The feedback protection circuit is a voltage measurement module and is used for detecting the voltage of the diode voltage regulator DW and the voltage of the MOS tube Q3 so as to perform circuit feedback and facilitate the protection of the circuit.
The three-pole voltage-stabilizing tube is characterized by further comprising a three-pole voltage-stabilizing tube 3, wherein the input end of the three-pole voltage-stabilizing tube 3 is connected to the positive end of the capacitor C, the output end of the three-pole voltage-stabilizing tube 3 is connected to the output end of a power supply, and the grounding end of the three-pole voltage-stabilizing tube is grounded, so that the stability of the circuit is further improved.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.
Claims (6)
1. A low-power consumption power supply in an electric vehicle circuit system is characterized in that: including BUCK circuit (1) of electric connection between power input end and power output end, BUCK circuit (1) includes MOS pipe Q1, inductance L, diode D, electric capacity C and pulse signal source (2), MOS pipe Q1's grid is connected in pulse signal source (2), MOS pipe Q1's drain electrode electric connection is in power input end, MOS pipe Q1's source electrode electric connection is in inductance L's current input end, inductance L's current output end is connected in power output end, diode D's negative pole is connected between MOS pipe Q1's source electrode and inductance L, diode D's positive terminal ground connection, electric capacity C's positive terminal is connected in inductance L's current output end, just electric capacity C's negative pole end ground connection.
2. A low power consumption power supply in an electric vehicle circuitry system according to claim 1, wherein: be provided with MOS pipe Q2 between pulse signal source (2) and MOS pipe Q1, MOS pipe Q2's grid is connected in pulse signal source, MOS pipe Q2's source ground connection, MOS pipe Q2's drain electrode is connected in MOS pipe Q1's grid, just MOS pipe Q2's drain electrode is connected in power input end.
3. A low power consumption power supply in an electric vehicle circuitry system according to claim 2, wherein: the feedback protection circuit further comprises a diode voltage-stabilizing tube DW, wherein the positive end of the diode voltage-stabilizing tube DW is connected to the positive end of the capacitor C, the negative end of the diode voltage-stabilizing tube DW is connected to the feedback protection circuit, and the negative end of the diode voltage-stabilizing tube DW is connected to the output end of the power supply.
4. A low power consumption power supply in an electric vehicle circuitry system according to claim 2, wherein: the feedback protection circuit further comprises a MOS tube Q3, the drain electrode of the MOS tube Q3 is connected to the grid electrode of the MOS tube Q2, the grid electrode of the MOS tube Q3 is connected to the feedback protection circuit, and the source electrode of the MOS tube Q3 is grounded.
5. A low power consumption power supply in an electric vehicle circuitry system according to claim 3 or 4, characterized in that: the feedback protection circuit is a voltage measurement module.
6. A low power consumption power supply in an electric vehicle circuitry system according to claim 1, wherein: the power supply is characterized by further comprising a triode voltage-regulator tube (3), wherein the input end of the triode voltage-regulator tube (3) is connected to the positive end of the capacitor C, the output end of the triode voltage-regulator tube (3) is connected to the output end of the power supply, and the grounding end of the triode voltage-regulator tube is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870884.1U CN215705693U (en) | 2021-04-26 | 2021-04-26 | Low-power-consumption power supply in electric vehicle circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120870884.1U CN215705693U (en) | 2021-04-26 | 2021-04-26 | Low-power-consumption power supply in electric vehicle circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215705693U true CN215705693U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120870884.1U Active CN215705693U (en) | 2021-04-26 | 2021-04-26 | Low-power-consumption power supply in electric vehicle circuit system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215705693U (en) |
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2021
- 2021-04-26 CN CN202120870884.1U patent/CN215705693U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20240112 Address after: Room 316, 3rd Floor, Building C, No. 1777 Hualong Road, Huaxin Town, Qingpu District, Shanghai, 201708 Patentee after: Zhirentchuanneng (Shanghai) Technical Service Co.,Ltd. Address before: 1777 Hualong Road, Huaxin Town, Qingpu District, Shanghai Patentee before: Shanghai Zhizu Wulian Technology Co.,Ltd. |