Low power consumption circuit of OBC auxiliary power supply controller

Abstract

The utility model provides a low-power-consumption circuit of an OBC auxiliary power supply controller, belongs to the field of integrated circuit design, and solves the problems that an OBC auxiliary power supply controller of an existing new energy automobile enters a dormant state, so that the electric quantity of a storage battery is consumed too fast, energy is wasted, and the service life of the storage battery is affected. Therefore, the power consumption of the storage battery after the OBC auxiliary power supply controller is dormant can be greatly reduced, and the electric energy is saved.

Description

Technical Field

[0001] The utility model provides a low-power consumption circuit of an OBC auxiliary power controller, belonging to the field of integrated circuit design. Background Art

[0002] Most of the OBC auxiliary power controllers of new energy vehicles on the market are connected to the battery for power supply, which means that even if the auxiliary power enters the sleep state, the battery power will continue to be consumed. This will cause the battery power to be consumed too quickly, resulting in energy waste and affecting the battery life. Utility Model Content

[0003] The purpose of the utility model is to solve the problem that the OBC auxiliary power controller of the existing new energy vehicle enters the sleep state, causing the battery power to be consumed too quickly, resulting in energy waste and affecting the battery life, and proposes a low-power consumption circuit of the OBC auxiliary power controller.

[0004] The problem to be solved by the present invention is achieved by the following technical solutions:

[0005] A low-power consumption circuit for an OBC auxiliary power controller includes one end of a first resistor, one end of a second resistor, one end of a third resistor, one end of a sixth resistor, an S end of a fifth MOS tube, and a D end of a sixth transistor, all electrically connected to a chip power supply terminal of a control chip. The other end of the first resistor is electrically connected to the anode of a first diode and the G end of a second MOS tube, respectively. The cathode of the first diode is electrically connected to a control signal terminal of the control chip. The D end of the second MOS tube is electrically connected to the other end of the second resistor and the G end of a fourth MOS tube, respectively. The S end of the fourth MOS tube is electrically connected to the other end of the third resistor. The D end of the fourth MOS tube is electrically connected to the anode of the second diode. The cathode of the second diode is electrically connected to one end of the fourth resistor, the other end of the fourth resistor is respectively electrically connected to one end of the fifth resistor and the B end of the first transistor, the C end of the first transistor is electrically connected to one end of the seventh resistor, the other end of the seventh resistor is respectively electrically connected to the other end of the sixth resistor and the G end of the fifth MOS transistor, the D end of the fifth MOS transistor is electrically connected to one end of the eighth resistor, the other end of the eighth resistor is respectively electrically connected to the cathode of the voltage regulator diode, one end of the capacitor, one end of the ninth resistor and the B end of the sixth transistor, the other end of the ninth resistor and the E end of the sixth transistor are respectively electrically connected to other power terminals of the controller, and the vehicle communication terminal of the control chip is electrically connected to the vehicle communication terminal.

[0006] Preferably, it also includes a storage battery, the positive electrode of the storage battery is electrically connected to the chip power supply end of the control chip, and the negative electrode of the storage battery is electrically connected to the other end of the fifth resistor, the E end of the first transistor, the positive electrode of the voltage regulator diode and the other end of the capacitor.

[0007] The present invention has the following beneficial effects compared with the existing ones:

[0008] The utility model provides a low-power consumption circuit of an OBC auxiliary power controller, which can greatly reduce the power consumption of a storage battery after the OBC auxiliary power controller goes into sleep mode, thereby saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a circuit diagram of a low-power consumption circuit of an OBC auxiliary power controller. DETAILED DESCRIPTION

[0010] The following is based on the attached Figure 1 The utility model is further described as follows:

[0011] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0012] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0013] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0014] like Figure 1As shown, the first embodiment of the present invention provides a low-power consumption circuit of an OBC auxiliary power controller based on the prior art, including one end of a first resistor R1, one end of a second resistor R2, one end of a third resistor R3, one end of a sixth resistor R6, an S end of a fifth MOS transistor Q5, and a D end of a sixth transistor Q6, which are electrically connected to the chip power supply terminal of the control chip respectively; the other end of the first resistor R1 is electrically connected to the anode of a first diode D1 and the G end of a second MOS transistor Q2 respectively; the cathode of the first diode D1 is electrically connected to the control signal terminal of the control chip; the D end of the second MOS transistor Q2 is electrically connected to the other end of the second resistor R2 and the G end of a fourth MOS transistor Q4 respectively; the S end of the fourth MOS transistor Q4 is electrically connected to the other end of the third resistor R3; the D end of the fourth MOS transistor Q4 is electrically connected to the second diode D1; and the cathode of the first diode D1 is electrically connected to the control signal terminal of the control chip. The anode of the transistor D2 is electrically connected, the cathode of the second diode D2 is electrically connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is electrically connected to one end of the fifth resistor R5 and the B terminal of the first transistor Q1, respectively, the C terminal of the first transistor Q1 is electrically connected to one end of the seventh resistor R7, the other end of the seventh resistor R7 is electrically connected to the other end of the sixth resistor R6 and the G terminal of the fifth MOS transistor Q5, the D terminal of the fifth MOS transistor Q5 is electrically connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 is electrically connected to the cathode of the Zener diode Z1, one end of the capacitor C2, one end of the ninth resistor R9, and the B terminal of the sixth transistor Q6, respectively, the other end of the ninth resistor R9 and the E terminal of the sixth transistor Q6 are electrically connected to other power terminals of the controller, and the vehicle communication terminal of the control chip is electrically connected to the vehicle communication terminal.

[0015] The controller of this embodiment also includes a battery outside, the positive electrode of the battery is electrically connected to the chip power supply end of the control chip, and the negative electrode of the battery is electrically connected to the other end of the fifth resistor R5, the E end of the first transistor Q1, the positive electrode of the voltage regulator diode Z1 and the other end of the capacitor C2.

[0016] The controller in this embodiment contains an OBC auxiliary power controller circuit. A first resistor R1 is connected to a first diode D1, which controls the second MOS transistor Q2 via the chip's control signal. The second MOS transistor Q2 is connected to a second resistor R2, which controls the fourth MOS transistor Q4. A third resistor R3, a fourth MOS transistor Q4, a second diode D2, a fourth resistor R4, and a fifth resistor R5 are connected to control the first transistor Q1. A sixth resistor R6, a seventh resistor R7, and the first transistor Q1 are connected to control the fifth MOS transistor Q5. The fifth MOS transistor Q5 is connected to an eighth resistor R8, which controls the sixth transistor Q6. A voltage regulator diode Z1 controls the output voltage of the sixth transistor Q6 when it is turned on. The sixth transistor Q6 switches the power-consuming components of the OBC auxiliary power controller, excluding the control chip. The OBC auxiliary power controller begins operating when the sixth transistor Q6 is turned on, and ceases operation when it is turned off.

[0017] The OBC auxiliary power controller is directly connected to the vehicle's battery. The control chip uses a chip with a wide power supply range and is powered directly by the battery. The control chip receives the vehicle's sleep and work signals.

[0018] When the vehicle sends a working signal, the control signal goes high. The G terminal of the second MOS transistor Q2 (N-type) goes high, turning on. The G terminal of the fourth MOS transistor Q4 (P-type) goes low, turning on. The b terminal of the first transistor Q1 (NPN) goes high, turning on. The G terminal of the fifth MOS transistor Q5 (P-type) goes low, turning on. The b terminal of the sixth transistor Q6 (NPN) goes high, turning on. At this point, the OBC auxiliary power controller operates normally, consuming approximately 1.2A.

[0019] When the vehicle sends a sleep signal, the chip control signal goes low, the G terminal of the second MOS transistor Q2 (N-type) goes low, and the second MOS transistor Q2 turns off; the G terminal of the fourth MOS transistor Q4 (P-type) goes high, and the fourth MOS transistor Q4 turns off; the b terminal of the first transistor Q1 (NPN) goes low, and the first transistor Q1 turns off; the G terminal of the fifth MOS transistor Q5 (P-type) goes high, and the fifth MOS transistor Q5 turns off; the b terminal of the sixth transistor Q6 (NPN) goes low, and the sixth transistor Q6 turns off. At this time, the OBC auxiliary power controller only uses power from the control chip, and the control chip enters a sleep state, consuming approximately 20uA. This embodiment of the circuit can reduce the current consumption from approximately 1.2A to approximately 20uA after the vehicle sends a sleep command, significantly reducing the current consumption of the OBC auxiliary power controller.

[0020] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A low-power consumption circuit of an OBC auxiliary power controller, characterized in that: The invention comprises one end of a first resistor (R1), one end of a second resistor (R2), one end of a third resistor (R3), one end of a sixth resistor (R6), an S end of a fifth MOS tube (Q5), and a D end of a sixth triode (Q6), which are electrically connected to the chip power supply end of the control chip respectively; the other end of the first resistor (R1) is electrically connected to the positive electrode of a first diode (D1) and the G end of a second MOS tube (Q2), the negative electrode of the first diode (D1) is electrically connected to the control signal end of the control chip, the D end of the second MOS tube (Q2) is electrically connected to the other end of the second resistor (R2) and the G end of a fourth MOS tube (Q4), the S end of the fourth MOS tube (Q4) is electrically connected to the other end of the third resistor (R3), the D end of the fourth MOS tube (Q4) is electrically connected to the positive electrode of the second diode (D2), and the negative electrode of the second diode (D2) is electrically connected to the positive electrode of the first diode (D1). One end of the four resistors (R4) is electrically connected, the other end of the fourth resistor (R4) is electrically connected to one end of the fifth resistor (R5) and the B end of the first transistor (Q1), the C end of the first transistor (Q1) is electrically connected to one end of the seventh resistor (R7), the other end of the seventh resistor (R7) is electrically connected to the other end of the sixth resistor (R6) and the G end of the fifth MOS transistor (Q5), the D end of the fifth MOS transistor (Q5) is electrically connected to one end of the eighth resistor (R8), the other end of the eighth resistor (R8) is electrically connected to the negative electrode of the voltage-stabilizing diode (Z1), one end of the capacitor (C2), one end of the ninth resistor (R9) and the B end of the sixth transistor (Q6), the other end of the ninth resistor (R9) and the E end of the sixth transistor (Q6) are electrically connected to other power terminals of the controller, and the vehicle communication terminal of the control chip is electrically connected to the vehicle communication terminal.

2. The low-power consumption circuit of an OBC auxiliary power controller according to claim 1, characterized in that: The device also includes a battery, the positive electrode of which is electrically connected to the chip power supply terminal of the control chip, and the negative electrode of which is electrically connected to the other end of the fifth resistor (R5), the E end of the first transistor (Q1), the positive electrode of the voltage regulator diode (Z1), and the other end of the capacitor (C2).

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