Charging stand indicating lamp control panel for electric automobile

Abstract

The utility model provides an indicating lamp control panel for a charging seat of an electric automobile, which relates to the technical field of electric automobiles and comprises a single chip microcomputer connected with a linear voltage stabilizing circuit, an indicating lamp constant-current control circuit, a control signal protection circuit and a charging seat cover state detection circuit. The linear voltage stabilizing circuit is connected with a power protection and filter circuit, the indicator light constant current control circuit is connected with an indicator light, the indicator light is connected with the power protection and filter circuit, and the linear voltage stabilizing circuit comprises a first chip, a first capacitor, a second capacitor and a first voltage stabilizing tube. The first capacitor, the second capacitor and the first voltage-regulator tube are all connected with the first chip, the first capacitor, the second capacitor and the first voltage-regulator tube are arranged in parallel, and the first capacitor, the second capacitor and the first voltage-regulator tube are all grounded. According to the utility model, a user of the electric vehicle can conveniently check the charging state, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a charging seat indicator light control panel for an electric vehicle. Background Art

[0002] Currently, most of the charging stations for electric vehicles on the market are not equipped with indicator lights, and users cannot easily observe the charging status during the charging process, resulting in a poor user experience.

[0003] Therefore, there is an urgent need for a charging stand indicator light control panel for electric vehicles to solve the problem of poor user experience during charging. Utility Model Content

[0004] The utility model provides a charging seat indicator light control panel for an electric vehicle, which can improve the user experience.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A charging seat indicator light control panel for an electric vehicle, comprising:

[0007] A single-chip microcomputer is connected to a linear voltage stabilization circuit, an indicator light constant current control circuit, a control signal protection circuit and a charging seat cover signal detection circuit. The linear voltage stabilization circuit is connected to a power protection and filtering circuit, the indicator light constant current control circuit is connected to the indicator light, and the indicator light is connected to the power protection and filtering circuit.

[0008] Furthermore, the linear voltage stabilization circuit includes a first chip, a first capacitor, a second capacitor and a first voltage regulator tube, the first capacitor, the second capacitor and the first voltage regulator tube are all connected to the first chip, the first capacitor, the second capacitor and the first voltage regulator tube are arranged in parallel, and the first capacitor, the second capacitor and the first voltage regulator tube are all grounded.

[0009] Further, the indicator light constant current control circuit includes a first triode and a second triode, the D base end of the first triode is connected to the C base end of the second triode and a first resistor is arranged therebetween, the B base end and the E base end of the second triode are connected and a second resistor is arranged therebetween, the E end of the first triode is connected to the second resistor, and the C base end of the first triode is connected to a third resistor;

[0010] It includes a third triode and a fourth triode, wherein the D base end of the third triode is connected to the C base end of the fourth triode with a fourth resistor arranged therebetween, the B base end and the E base end of the fourth triode are connected with a fifth resistor arranged therebetween, the E end of the third triode is connected to the fifth resistor, and the C base end of the third triode is connected to a sixth resistor;

[0011] It includes a fifth transistor and a sixth transistor, the D base end of the fifth transistor is connected to the C base end of the sixth transistor with a seventh resistor arranged therebetween, the B base end and the E base end of the sixth transistor are connected with an eighth resistor arranged therebetween, the E end of the fifth transistor is connected to the eighth resistor, and the C base end of the fifth transistor is connected to a ninth resistor.

[0012] Further, the control signal protection circuit includes a tenth resistor, a second voltage regulator tube, a third capacitor and an eleventh resistor, the tenth resistor, the second voltage regulator tube and the eleventh resistor are connected, the third capacitor is arranged in parallel with the second voltage regulator tube, and the eleventh resistor is connected to the third capacitor;

[0013] The control signal protection circuit includes a twelfth resistor, a third voltage-stabilizing tube, a fourth capacitor and a thirteenth resistor, wherein the twelfth resistor, the third voltage-stabilizing tube and the twelfth resistor are connected, the fourth capacitor and the third voltage-stabilizing tube are arranged in parallel, and the thirteenth resistor is connected to the fourth capacitor;

[0014] The control signal protection circuit includes a fourteenth resistor, a fourth voltage-stabilizing tube, a fifth capacitor and a fifteenth resistor. The fourteenth resistor, the fourth voltage-stabilizing tube and the fifteenth resistor are connected. The fifth capacitor is arranged in parallel with the fourth voltage-stabilizing tube. The fourteenth resistor is connected to the fifth capacitor.

[0015] Furthermore, the charging seat cover signal detection circuit includes a sixth voltage regulator tube, a sixth capacitor, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor. The sixth voltage regulator tube is connected to the fifteenth resistor and the sixteenth resistor, and one end of the sixth capacitor is connected to the seventeenth resistor.

[0016] Furthermore, the power protection and filtering circuit includes a first diode, a second diode, a seventh capacitor and a safety device, the seventh capacitor is arranged in parallel with the first diode, and the safety device is connected to the first diode and the second diode.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] Compared with the existing structure, the utility model can conveniently observe the charging status of the electric vehicle (plugging in, pulling out, charging, fault), thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the composition of the utility model;

[0020] Figure 2 It is a schematic diagram of a single chip microcomputer and a constant current control circuit of an indicator light in the utility model;

[0021] Figure 3It is a schematic diagram of the control signal protection circuit and the charging seat cover signal detection circuit in the utility model;

[0022] Figure 4 It is a schematic diagram of the power supply protection and filtering circuit and the linear voltage stabilizing circuit in the utility model. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] This embodiment provides a charging seat indicator light control panel for an electric vehicle, such as Figure 1-Figure 4 As shown, including:

[0026] Single chip microcomputer U2, single chip microcomputer U2 is connected with linear voltage stabilization circuit, indicator light constant current control circuit, control signal protection circuit and charging seat cover signal detection circuit, the linear voltage stabilization circuit is connected with power protection and filtering circuit, the indicator light constant current control circuit is connected with indicator light, and the indicator light is connected with power protection and filtering circuit. Low power consumption single chip microcomputer U2 is used to collect control signals from the on-board charger and switch signals from the charging seat cover switch, and uses indicator light constant current control circuit according to customized display logic to control the indicator light to display different colors and brightness to indicate different states of the on-board charger.

[0027] Compared with the existing structure, the charging status of the electric vehicle (plugging in, unplugging, charging, fault) can be easily observed, thus improving the user experience.

[0028] The above embodiment is further optimized, and the linear voltage stabilization circuit includes a first chip U1, a first capacitor C9, a second capacitor C6 and a first voltage regulator D9, the first capacitor C9, the second capacitor C6 and the first voltage regulator D9 are all connected to the first chip U1, the first capacitor C9, the second capacitor C6 and the first voltage regulator D9 are arranged in parallel, and the first capacitor C9, the second capacitor C6 and the first voltage regulator D9 are all grounded.

[0029] The above embodiment is further optimized, the indicator constant current control circuit includes a first triode Q1 and a second triode Q4, the D base end of the first triode Q1 is connected to the C base end of the second triode Q4 and a first resistor R11 is arranged between them, the B base end and the E base end of the second triode Q4 are connected and a second resistor R13 is arranged between them, the E end of the first triode is connected to the second resistor R13, and the C base end of the first triode Q1 is connected to a third resistor R9;

[0030] It includes a third triode Q2 and a fourth triode Q5, wherein the D base end of the third triode Q2 is connected to the C base end of the fourth triode Q5 and a fourth resistor R17 is arranged therebetween, the B base end and the E base end of the fourth triode Q5 are connected and a fifth resistor R14 is arranged therebetween, the E end of the third triode Q2 is connected to the fifth resistor R14, and the C base end of the third triode Q2 is connected to a sixth resistor R10;

[0031] It includes a fifth triode Q3 and a sixth triode Q6, the D base end of the fifth triode Q3 is connected to the C base end of the sixth triode Q6 with a seventh resistor R18 arranged therebetween, the B base end and the E base end of the sixth triode Q6 are connected with an eighth resistor R15 arranged therebetween, the E extreme end of the fifth triode Q3 is connected to the eighth resistor R15, and the C base end of the fifth triode Q3 is connected to a ninth resistor R16.

[0032] After the current passes through the source filter and protection circuit, a part of it is stepped down and filtered by the linear voltage regulator system and supplied to the entire light board. Among them, the low-power linear voltage regulator chip U5 converts the voltage supplied by the on-board computer into the low voltage required by the light board control part. Two capacitors (C9, C6) are used to filter clutter of different frequencies, and transient suppression diodes are used for voltage clamping and spike absorption.

[0033] The control signal protection circuit is used for signal conversion and protection of the microcontroller. The circuit converts the higher voltage signal of the on-board charger into a voltage signal that can be recognized by the microcontroller pin to prevent the control signal of the on-board charger from damaging the microcontroller. The voltage divider resistors (R1, R2, R3) are used to divide the higher signal voltage; the current limiting resistors (R5, R6, R7) limit the current flowing to the microcontroller to a range that will not damage the microcontroller; the sampling and holding capacitors (C1, C2, C3) are used to stabilize the voltage of the control signal when the microcontroller collects the control signal; the transient suppression diodes (D1, D2, D3) are used for voltage clamping. When the control signal voltage from the on-board charger is abnormally high, the microcontroller pins are protected from damage.

[0034] The above embodiment is further optimized, the control signal protection circuit includes a tenth resistor R5, a second voltage regulator tube D1, a third capacitor C1 and an eleventh resistor R1, the tenth resistor R5, the second voltage regulator tube D1 and the eleventh resistor R1 are connected, the third capacitor C1 and the second voltage regulator tube D1 are arranged in parallel, and the eleventh resistor R1 is connected to the third capacitor C1;

[0035] The control signal protection circuit includes a twelfth resistor R6, a third voltage regulator tube D2, a fourth capacitor C2 and a thirteenth resistor R2, the twelfth resistor R6, the third voltage regulator tube D2 and the thirteenth resistor R2 are connected, the fourth capacitor C2 is arranged in parallel with the third voltage regulator tube D2, and the thirteenth resistor R2 is connected with the fourth capacitor C2;

[0036] The control signal protection circuit includes a fourteenth resistor R7, a fourth voltage regulator tube D3, a fifth capacitor C3 and a fifteenth resistor R3. The fourteenth resistor R7, the fourth voltage regulator tube D3 and the fifteenth resistor R3 are connected, the fifth capacitor C3 and the fourth voltage regulator tube D3 are arranged in parallel, and the fourteenth resistor R7 is connected to the fifth capacitor C3.

[0037] The indicator light constant current control circuit is used to respond to the operation of the single-chip microcomputer on the indicator light and provide constant current control for the indicator light. The connection resistors (R9, R10, R16) connect the red, green and blue color channels of the indicator light to the control circuit respectively; the current limiting resistors (R11, R17, R18) limit the control signal of the single-chip microcomputer to the size that the base of the transistor can bear, and limit the output current of the single-chip microcomputer pin under fault conditions; the control transistors (Q1, Q2, Q3, Q4, Q5, Q6) and the emitter current detection resistors (R13, R14, R15) together form a constant current control module; the entire control circuit provides constant current drive for the indicator light, so that the brightness of the indicator light is constant when the power supply voltage and temperature of the light board change.

[0038] The above embodiment is further optimized, and the charging seat cover signal detection circuit includes a sixth voltage regulator tube D4, a sixth capacitor C4, a fifteenth resistor R8, a sixteenth resistor R12 and a seventeenth resistor R14, the sixth voltage regulator tube D4 is connected to the fifteenth resistor R8 and the sixteenth resistor R12, and one end of the sixth capacitor C4 is connected to the seventeenth resistor R14.

[0039] The charging seat cover switch signal detection circuit is used to detect the cover opening signal and realize the power consumption management of the circuit. The charging seat cover signal is grounded when the cover is closed and suspended when the cover is opened. The circuit converts the suspended signal into a level signal that can be recognized by the single-chip microcomputer, and protects the single-chip microcomputer pins from being damaged by abnormal signals. The pull-up resistor R4 is used to pull up the suspended signal to a high-level signal that can be recognized by the single-chip microcomputer, and prevent the abnormal signal voltage from entering the power supply system; the current limiting resistor (R8, R12) limits the current flowing to the single-chip microcomputer to a range that will not damage the single-chip microcomputer; the sampling and holding capacitor C4 is used to stabilize the voltage of the control signal when the single-chip microcomputer collects the control signal; the transient suppression diode D4 is used for voltage clamping. When the control signal voltage output by the on-board charger is abnormally high, the single-chip microcomputer pins are protected from being damaged.

[0040] The above embodiment is further optimized, the power protection and filtering circuit includes a first diode D5, a second diode D6, a seventh capacitor C5 and a fuse F1, the seventh capacitor C5 is arranged in parallel with the first diode D5, and the fuse F1 is connected to the first diode D5 and the second diode D6.

[0041] The power supply current enters from the interface and passes through the input power supply filtering and protection circuit. Among them, the general diode D6 is used to prevent the power supply from being reversed; the fuse F1 cuts off the power supply to the light board when the light board is short-circuited to prevent fire and other faults; the transient suppression diode D5 is used for voltage clamping and spike absorption, and protects the light board when the on-board computer power supply has an abnormally high voltage; the capacitor C5 is used for filtering.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging station indicator light control panel for an electric vehicle, characterized in that: include: A single-chip microcomputer is connected to a linear voltage stabilization circuit, an indicator light constant current control circuit, a control signal protection circuit and a charging seat cover signal detection circuit. The linear voltage stabilization circuit is connected to a power protection and filtering circuit, the indicator light constant current control circuit is connected to the indicator light, and the indicator light is connected to the power protection and filtering circuit.

2. A charging station indicator light control panel for an electric vehicle according to claim 1, characterized in that: The linear voltage stabilization circuit includes a first chip, a first capacitor, a second capacitor and a first voltage regulator tube. The first capacitor, the second capacitor and the first voltage regulator tube are all connected to the first chip. The first capacitor, the second capacitor and the first voltage regulator tube are arranged in parallel. The first capacitor, the second capacitor and the first voltage regulator tube are all grounded.

3. A charging station indicator light control panel for an electric vehicle according to claim 2, characterized in that: The indicator light constant current control circuit comprises a first triode and a second triode, the D base end of the first triode is connected to the C base end of the second triode and a first resistor is arranged between them, the B base end and the E base end of the second triode are connected and a second resistor is arranged between them, the E end of the first triode is connected to the second resistor, and the C base end of the first triode is connected to a third resistor; It includes a third triode and a fourth triode, wherein the D base end of the third triode is connected to the C base end of the fourth triode with a fourth resistor arranged therebetween, the B base end and the E base end of the fourth triode are connected with a fifth resistor arranged therebetween, the E end of the third triode is connected to the fifth resistor, and the C base end of the third triode is connected to a sixth resistor; It includes a fifth transistor and a sixth transistor, the D base end of the fifth transistor is connected to the C base end of the sixth transistor with a seventh resistor arranged therebetween, the B base end and the E base end of the sixth transistor are connected with an eighth resistor arranged therebetween, the E end of the fifth transistor is connected to the eighth resistor, and the C base end of the fifth transistor is connected to a ninth resistor.

4. The charging stand indicator light control panel for electric vehicles according to claim 1, characterized in that: The control signal protection circuit includes a tenth resistor, a second voltage-stabilizing tube, a third capacitor and an eleventh resistor, wherein the tenth resistor, the second voltage-stabilizing tube and the eleventh resistor are connected, the third capacitor is arranged in parallel with the second voltage-stabilizing tube, and the eleventh resistor is connected with the third capacitor; The control signal protection circuit includes a twelfth resistor, a third voltage-stabilizing tube, a fourth capacitor and a thirteenth resistor, wherein the twelfth resistor, the third voltage-stabilizing tube and the twelfth resistor are connected, the fourth capacitor and the third voltage-stabilizing tube are arranged in parallel, and the thirteenth resistor is connected to the fourth capacitor; The control signal protection circuit includes a fourteenth resistor, a fourth voltage-stabilizing tube, a fifth capacitor and a fifteenth resistor. The fourteenth resistor, the fourth voltage-stabilizing tube and the fifteenth resistor are connected. The fifth capacitor is arranged in parallel with the fourth voltage-stabilizing tube. The fourteenth resistor is connected to the fifth capacitor.

5. The charging stand indicator light control panel for electric vehicles according to claim 1, characterized in that: The charging seat cover signal detection circuit includes a sixth voltage regulator tube, a sixth capacitor, a fifteenth resistor, a sixteenth resistor and a seventeenth resistor. The sixth voltage regulator tube is connected to the fifteenth resistor and the sixteenth resistor, and one end of the sixth capacitor is connected to the seventeenth resistor.

6. The charging station indicator light control panel for electric vehicles according to claim 1, characterized in that: The power protection and filtering circuit comprises a first diode, a second diode, a seventh capacitor and a safety device. The seventh capacitor is arranged in parallel with the first diode, and the safety device is connected with the first diode and the second diode.

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