Display screen of electric vehicle

Abstract

The utility model discloses a display screen of an electric vehicle. The display screen comprises a display screen body and a state monitoring module electrically connected with the display screen body. The display screen comprises a front cover, a light-transmitting plate installed in the front cover, a control panel installed on one side of the light-transmitting plate and attached to the light-transmitting plate, and a rear cover installed on one side of the control panel. A driver and a lamp set electrically connected with the driver are further arranged on the side, located on the light-transmitting plate, of the control panel. The control panel is electrically connected with the state monitoring module, and the state monitoring module comprises a compensation unit, a switching unit, a voltage detection unit and a short circuit detection unit; the driver and the lamp set are arranged on the same side of the control panel, so that the heating position of the control panel is concentrated at the position opposite to the driver and the lamp set, the rear cover directly makes contact with the heating part of the control panel, heat dissipation is conducted on the heating part, and power stored in the first storage battery is transmitted to the control panel; and the output current and voltage are compensated.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a display screen for an electric vehicle. Background Art

[0002] An electric vehicle display screen refers to a vehicle that can detect and display the running state of the vehicle in real time, drive the wheels with a motor, and meet the requirements of road traffic and safety regulations.

[0003] In the existing display screen, the driver and the lamp group are symmetrically arranged on both sides of the control board. Therefore, the heat generated by the driver and the heat generated by the lamp group will be concentrated on the control board, resulting in a decrease in the response speed of the control board and an increase in temperature. The existing display screen only displays the state of the electric vehicle and cannot monitor and control the charging or discharging states of multiple groups and single batteries, nor can it automatically switch different power supply paths to detect the batteries in the discharging state. Therefore, it is impossible to display and control the power supply of the electric vehicle through the display screen in a timely manner, which may cause damage to the battery and failure of the display screen connected to the battery. Summary of the Utility Model

[0004] Purpose of the utility model: To provide a display screen for an electric vehicle to solve the above problems existing in the prior art.

[0005] Technical solution: A display screen for an electric vehicle includes:

[0006] A display screen, and a state monitoring module electrically connected to the display screen;

[0007] The display screen includes a front cover, a light-transmitting plate installed in the front cover, a control board installed on one side of the light-transmitting plate and attached to the light-transmitting plate, and a rear cover installed on one side of the control board;

[0008] On one side of the light-transmitting plate, the control board is further provided with a driver and a lamp group electrically connected to the driver;

[0009] The control board is electrically connected to the state monitoring module, and the state monitoring module includes a compensation unit, a switching unit, a voltage detection unit, and a short-circuit detection unit;

[0010] The compensation unit transmits the stored power supply of the first battery to the control board through the coupler U1 and compensates the current and voltage output by the first battery;

[0011] The switching unit switches the power supply path of the normally open contact S1 and the normally closed contact S11 through the relay T1;

[0012] The voltage detection unit controls the on-off of the triode Q2 according to the closing of the normally open contact S1 through the series voltage division of the resistors R1 and R2;

[0013] The short - circuit detection unit controls the on - off of transistor Q5 by the parallel shunt of resistor R3 and resistor R4 and according to the closing of the normally - closed contact S11.

[0014] The fault prompt unit controls the lighting and extinguishing of the indicator light L1 by the on - off of transistor Q3.

[0015] In a further embodiment, the front cover and the rear cover are thread - connected, the control board is snap - fitted with the rear cover, there is a gap between the light - transmitting plate and the control board, the driver and the lamp group are located at the gap, the light - transmitting plate is snap - fitted with the front cover, the lamp group is electrically connected to the driver, the driver is electrically connected to the control board, the indicator light L1 is installed on the control board, the lamp group restricts each monitoring data of the electric vehicle, the control board monitors and controls the first battery and the second battery, and automatically switches the power supply of the electric vehicle according to the detected fault point.

[0016] In a further embodiment, the compensation unit includes capacitor C1, coupler U1 and inductor L1. Among them, one end of capacitor C1 is respectively connected to the positive terminal of the first battery, pin 8 and pin 2 of coupler U1; the negative terminal of the first battery is connected to the ground wire GND, and the other end of capacitor C1 is connected to the ground wire GND; both pin 3 and pin 5 of coupler U1 are connected to the ground wire GND; pin 6 of coupler U1 is connected to one end of inductor L1; the positive terminal and the negative terminal of the first battery are respectively connected to the control board.

[0017] In a further embodiment, the switching unit includes relay T1, normally - open contact S1, normally - closed contact S2, transistor Q1, diode D3, normally - closed contact S11, second battery, normally - closed contact S3 and transistor Q4. Among them, one end of relay T1 is respectively connected to the other end of inductor L1, one end of normally - closed contact S2 and one end of normally - open contact S1; the other end of relay T1 is connected to the ground wire GND; the other end of normally - open contact S1 is connected to the base terminal of transistor Q1; the collector terminal of transistor Q1 is connected to one end of capacitor C1; the other end of normally - closed contact S2 is respectively connected to one end of normally - closed contact S3, the positive terminal of diode D3 and one end of the second battery; the other end of the second battery is connected to the ground wire GND; the negative terminal of diode D3 is respectively connected to one end of normally - closed contact S11 and the collector terminal of transistor Q4, and both ends of the second battery are connected to the control board.

[0018] In a further embodiment, the voltage detection unit includes a resistor R1, a resistor R2, a triode Q2, a relay T2, and a diode D2. Among them, one end of the resistor R1 is connected to the emitter end of the triode Q1; the other end of the resistor R1 is respectively connected to one end of the resistor R2, the collector end of the triode Q2, and one end of the relay T2; the other end of the resistor R2 is connected to the base end of the triode Q2; the emitter end of the triode Q2 is connected to the positive electrode end of the diode D2; the other end of the relay T2 is connected to the ground wire GND.

[0019] In a further embodiment, the short - circuit detection unit includes a resistor R3, a resistor R4, a triode Q6, a resistor R5, a diode D4, a transistor Q5, a triode Q7, and a transistor T3. Among them, one end of the resistor R3 is respectively connected to one end of the resistor R4, the emitter end of the triode Q4, and one end of the resistor R5; the other end of the resistor R3 is respectively connected to the base end of the triode Q6, the collector end of the triode Q7, and the pin 1 of the transistor Q5; the emitter end of the triode Q6 is connected to the positive electrode end of the diode D4; the negative electrode end of the diode D4 is respectively connected to the pin 2 of the transistor Q5 and the emitter end of the triode Q7; the pin 3 of the transistor Q5 is connected to one end of the relay T3; the other end of the transistor T3 is connected to the ground wire GND.

[0020] In a further embodiment, the fault prompt unit includes a diode D1, a normally - open contact S32, an indicator light L1, a triode Q3, and a normally - open contact S31. Among them, the positive electrode end of the diode D1 is connected to the collector end of the triode Q1; the negative electrode end of the diode D1 is respectively connected to one end of the normally - open contact S32 and the positive electrode end of the indicator light L1; the other end of the normally - open contact S32 is respectively connected to the negative electrode end of the diode D2, the base end of the triode Q3, and one end of the normally - open contact S31; the other end of the normally - open contact S31 is connected to the positive electrode end of the diode D3; the collector end of the triode Q3 is connected to the negative electrode end of the indicator light L1; the emitter end of the triode Q3 is connected to the ground wire GND.

[0021] In a further embodiment, the model of the coupler U1 is 6N137; the models of the triodes Q1, Q2, Q3, Q4, Q7, and Q6 are all NPN; when the relay T1 is powered on, the normally - open contact S1 is closed, and the normally - closed contact S11 is opened; when the relay T2 is powered on, the normally - closed contact S2 is opened; when the relay T3 is powered on, the normally - open contact S31 is closed, the normally - open contact S32 is closed, and the normally - closed contact S3 is opened.

[0022] Beneficial effects: In the present utility model, by arranging the driver and the lamp group on the same side of the control board, the heat - generating position of the control board is concentrated at the position opposite to the driver and the lamp group, enabling the rear cover to directly contact the heat - generating part of the control board and dissipate heat from this part. The power stored in the first battery is transmitted to the control board, and the current and voltage output by the first battery are compensated. Capacitor C1 stores the power and provides a trigger voltage to coupler U1, thereby regulating the power output by the first battery. Then, according to the energization of relay T1, the closing of the normally - open contact S1 and the opening of the normally - closed contact S11 are controlled to realize the switching of the power supply paths of the first battery and the second battery. When triode Q1 conducts, resistors R1 and R2 are connected in series for voltage division, and the divided voltage is detected. When the divided voltage meets the conduction condition of triode Q2, it is determined at this time that the voltage exceeds the set value. At this time, according to relay T2, the state of the normally - closed contact S2 is switched. After the power - supply port cover is closed, at this time, triode Q4 obtains the battery power and conducts. Resistors R3 and R4 are connected in parallel for current shunting to detect the large current generated by the short - circuit. When triode Q6 or triode Q7 conducts during the shunting state, it is determined at this time that the short - circuit current exceeds the set value. At this time, transistor Q5 conducts, and relay T3 is energized to control the closing of the normally - open contacts S31 and S32, causing the indicator lamp L1 to light up on the control board for prompting. Brief Description of the Drawings

[0023] Figure 1 is a schematic diagram of the display screen structure of the present utility model.

[0024] Figure 2 is the structural circuit diagram of the present utility model.

[0025] Figure 3 is the front view of the control board of the present utility model.

[0026] Figure 4 is the rear view of the control board of the present utility model.

[0027] Reference numerals are: 1, front cover; 2, rear cover; 3, light - transmitting plate; 4, control board; 41, driver; 42, lamp group. Detailed Description of the Embodiment

[0028] As Figures 1-4 shown, a display screen of an electric vehicle includes:

[0029] A display screen, a state monitoring module electrically connected to the display screen; the display screen includes a front cover 1, a light-transmitting plate 3 installed inside the front cover 1, a control board 4 installed on one side of the light-transmitting plate 3 and attached to the light-transmitting plate 3, and a rear cover 2 installed on one side of the control board 4; the front cover 1 and the rear cover 2 are threadedly connected, the control board 4 is snap-fitted with the rear cover 2, there is a gap between the light-transmitting plate and the control board 4, a driver 41 and a lamp group 42 are located in the gap, the light-transmitting plate is snap-fitted with the front cover 1, the lamp group 42 is electrically connected to the driver 41, the driver 41 is electrically connected to the control board 4, an indicator light L1 is installed on the control board 4, the lamp group 42 restricts various monitoring data of the electric vehicle, and the control board 4 monitors and controls the first battery and the second battery, and automatically switches the power supply of the electric vehicle according to the detected fault point.

[0030] On one side of the light-transmitting plate 3, the control board 4 is also provided with a driver 41 and a lamp group 42 electrically connected to the driver 41; the control board 4 is electrically connected to the state monitoring module, and the state monitoring module includes a compensation unit, a switching unit, a voltage detection unit, and a short-circuit detection unit;

[0031] The compensation unit includes a capacitor C1, a coupler U1, and an inductor L1.

[0032] One end of the capacitor C1 in the compensation unit is respectively connected to the positive terminal of the first battery, pin 8 and pin 2 of the coupler U1; the negative terminal of the first battery is connected to the ground wire GND, and the other end of the capacitor C1 is connected to the ground wire GND; pins 3 and 5 of the coupler U1 are both connected to the ground wire GND; pin 6 of the coupler U1 is connected to one end of the inductor L1; the positive terminal and the negative terminal of the first battery are respectively connected to the control board 4, and the coupler U1 transmits the stored power supply of the first battery to the control board 4 and compensates for the current and voltage output by the first battery.

[0033] The switching unit includes a relay T1, a normally open contact S1, a normally closed contact S2, a triode Q1, a diode D3, a normally closed contact S11, a second battery, a normally closed contact S3, and a triode Q4.

[0034] One end of the relay T1 in the switching unit is respectively connected to the other end of the inductor L1, one end of the normally closed contact S2, and one end of the normally open contact S1; the other end of the relay T1 is connected to the ground wire GND; the other end of the normally open contact S1 is connected to the base terminal of the triode Q1; the collector terminal of the triode Q1 is connected to one end of the capacitor C1; the other end of the normally closed contact S2 is respectively connected to one end of the normally closed contact S3, the positive terminal of the diode D3, and one end of the second battery; the other end of the second battery is connected to the ground wire GND; the negative terminal of the diode D3 is respectively connected to one end of the normally closed contact S11 and the collector terminal of the triode Q4, and the two ends of the second battery are respectively connected to the control board 4, and the relay T1 switches the power supply path of the normally open contact S1 and the normally closed contact S11.

[0035] The voltage detection unit includes a resistor R1, a resistor R2, a triode Q2, a relay T2, and a diode D2.

[0036] One end of the resistor R1 in the voltage detection unit is connected to the emitter end of the triode Q1; the other end of the resistor R1 is respectively connected to one end of the resistor R2, the collector end of the triode Q2, and one end of the relay T2; the other end of the resistor R2 is connected to the base end of the triode Q2; the emitter end of the triode Q2 is connected to the positive end of the diode D2; the other end of the relay T2 is connected to the ground wire GND. The series voltage division of the resistor R1 and the resistor R2 controls the on-off of the triode Q2 according to the closing of the normally open contact S1.

[0037] The short-circuit detection unit includes a resistor R3, a resistor R4, a triode Q6, a resistor R5, a diode D4, a transistor Q5, a triode Q7, and a transistor T3.

[0038] One end of the resistor R3 in the short-circuit detection unit is respectively connected to one end of the resistor R4, the emitter end of the triode Q4, and one end of the resistor R5; the other end of the resistor R3 is respectively connected to the base end of the triode Q6, the collector end of the triode Q7, and the pin 1 of the transistor Q5; the emitter end of the triode Q6 is connected to the positive end of the diode D4; the negative end of the diode D4 is respectively connected to the pin 2 of the transistor Q5 and the emitter end of the triode Q7; the pin 3 of the transistor Q5 is connected to one end of the relay T3; the other end of the transistor T3 is connected to the ground wire GND. The parallel current division of the resistor R3 and the resistor R4 controls the on-off of the transistor Q5 according to the closing of the normally closed contact S11.

[0039] The fault prompt unit includes a diode D1, a normally open contact S32, an indicator light L1, a triode Q3, and a normally open contact S31.

[0040] The positive end of the diode D1 in the fault prompt unit is connected to the collector end of the triode Q1; the negative end of the diode D1 is respectively connected to one end of the normally open contact S32 and the positive end of the indicator light L1; the other end of the normally open contact S32 is respectively connected to the negative end of the diode D2, the base end of the triode Q3, and one end of the normally open contact S31; the other end of the normally open contact S31 is connected to the positive end of the diode D3; the collector end of the triode Q3 is connected to the negative end of the indicator light L1; the emitter end of the triode Q3 is connected to the ground wire GND. The fault prompt unit controls the lighting and extinguishing of the indicator light L1 through the on-off of the triode Q3.

[0041] Working principle: The first battery and the second battery simultaneously obtain a power supply and store the power. The first battery compensates the current and voltage of the power transmitted to the electric vehicle through the coupler U1. The capacitor C1 stores the power and provides a trigger voltage to the coupler U1, thereby regulating the power output by the first battery. After the regulation is completed, according to the energization of the relay T1, the normally open contact S1 is controlled to close and the normally closed contact S11 is controlled to open;

[0042] At this time, according to the conduction of the triode Q1, the supply voltage is transmitted to the resistors R1 and R2 for series voltage division processing;

[0043] When the supply voltage is stepped down by the resistor R1 and does not energize the relay T2, it is determined at this time that the power supply meets the voltage required by the second battery;

[0044] When the supply voltage is stepped down by the resistor R1 and energizes the relay T2, it is determined at this time that the power supply does not meet the voltage required by the second battery; the normally closed contact S2 opens, and the resistor R2 divides the voltage again for the voltage that does not meet the second battery, controlling the conduction of the triodes Q2 and Q3, and the indicator light L1 gives a warning on the control board 4;

[0045] When the first battery and the second battery simultaneously lose the power supply, the normally open contact S1 opens and the normally closed contact S11 closes at this time. At this time, the triode Q4 obtains the power supply of the second battery and conducts. The resistors R3 and R4 detect the output state of the second battery according to parallel current division;

[0046] When a short circuit occurs, a large current will be generated, and the resistors R3 and R4 perform current division processing on the generated large current;

[0047] When the shunted current makes the triode Q6 or the triode Q7 conduct, it is determined at this time that the short-circuit current exceeds the set value. At this time, the transistor Q5 conducts and makes the relay T3 energize, controlling the normally closed contact S3 to open and the normally open contacts S31 and S32 to close, and giving a prompt through the fault indicator light L1;

[0048] When the shunted current does not make the triode Q6 or the triode Q7 conduct, it is determined at this time that the short-circuit current does not exceed the set value. At this time, the transistor Q5 is cut off and makes the relay T3 de-energize, controlling the normally closed contact S3 to close and the normally open contacts S31 and S32 to be normally open.

[0049] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A display screen of an electric vehicle, characterized in that Including: A display screen, and a status monitoring module electrically connected to the display screen; The display screen includes a front cover, a light-transmitting plate installed inside the front cover, a control board installed on one side of the light-transmitting plate and attached to the light-transmitting plate, and a rear cover installed on one side of the control board; The control board is also provided with a driver on one side of the light-transmitting plate, and a lamp group electrically connected to the driver; The control board is electrically connected to the status monitoring module, and the status monitoring module includes a compensation unit, a switching unit, a voltage detection unit, and a short-circuit detection unit; The compensation unit transmits the electrical power stored in the first storage battery to the control board through a coupler U1, and compensates the current and voltage output by the first storage battery; The switching unit switches the power supply paths of the normally open contact S1 and the normally closed contact S11 through a relay T1; The voltage detection unit controls the on-off of the triode Q2 according to the closing of the normally open contact S1 through the series voltage division of the resistor R1 and the resistor R2; The short-circuit detection unit controls the on-off of the transistor Q5 according to the closing of the normally closed contact S11 through the parallel current division of the resistor R3 and the resistor R4; The fault prompt unit controls the lighting and extinguishing of the indicator lamp L1 through the on-off of the triode Q3.

2. The display screen of an electric vehicle according to claim 1, characterized in that: The front cover and the rear cover are threadedly connected, the control board is snap-fitted with the rear cover, there is a gap between the light-transmitting plate and the control board, the driver and the lamp group are located at the gap, the light-transmitting plate is snap-fitted with the front cover, the lamp group is electrically connected to the driver, the driver is electrically connected to the control board, and the indicator lamp L1 is installed on the control board.

3. The display screen of an electric vehicle according to claim 1, wherein: The compensation unit includes a capacitor C1, a coupler U1, and an inductor L1. Among them, one end of the capacitor C1 is respectively connected to the positive extreme of the first storage battery, the pin 8 and the pin 2 of the coupler U1; the negative extreme of the first storage battery is connected to the ground wire GND, and the other end of the capacitor C1 is connected to the ground wire GND; the pin 3 and the pin 5 of the coupler U1 are both connected to the ground wire GND; the pin 6 of the coupler U1 is connected to one end of the inductor L1; the positive extreme and the negative extreme of the first storage battery are respectively connected to the control board.

4. The display screen of an electric vehicle according to claim 1, characterized in that: The switching unit includes a relay T1, a normally open contact S1, a normally closed contact S2, a triode Q1, a diode D3, a normally closed contact S11, a second storage battery, a normally closed contact S3, and a triode Q4. Among them, one end of the relay T1 is respectively connected to the other end of the inductor L1, one end of the normally closed contact S2, and one end of the normally open contact S1; the other end of the relay T1 is connected to the ground wire GND; the other end of the normally open contact S1 is connected to the base extreme of the triode Q1; the collector extreme of the triode Q1 is connected to one end of the capacitor C1; the other end of the normally closed contact S2 is respectively connected to one end of the normally closed contact S3, the positive extreme of the diode D3, and one end of the second storage battery; the other end of the second storage battery is connected to the ground wire GND; the negative extreme of the diode D3 is respectively connected to one end of the normally closed contact S11 and the collector extreme of the triode Q4, and the two ends of the second storage battery are respectively connected to the control board.

5. The display screen of an electric vehicle according to claim 1, characterized in that: The voltage detection unit includes a resistor R1, a resistor R2, a triode Q2, a relay T2, and a diode D2. Among them, one end of the resistor R1 is connected to the emitter terminal of the triode Q1; the other end of the resistor R1 is respectively connected to one end of the resistor R2, the collector terminal of the triode Q2, and one end of the relay T2; the other end of the resistor R2 is connected to the base terminal of the triode Q2; the emitter terminal of the triode Q2 is connected to the positive terminal of the diode D2; the other end of the relay T2 is connected to the ground wire GND.

6. The display screen of an electric vehicle according to claim 1, wherein: The short - circuit detection unit includes a resistor R3, a resistor R4, a triode Q6, a resistor R5, a diode D4, a transistor Q5, a triode Q7, and a transistor T3. Among them, one end of the resistor R3 is respectively connected to one end of the resistor R4, the emitter terminal of the triode Q4, and one end of the resistor R5; the other end of the resistor R3 is respectively connected to the base terminal of the triode Q6, the collector terminal of the triode Q7, and pin 1 of the transistor Q5; the emitter terminal of the triode Q6 is connected to the positive terminal of the diode D4; the negative terminal of the diode D4 is respectively connected to pin 2 of the transistor Q5 and the emitter terminal of the triode Q7; pin 3 of the transistor Q5 is connected to one end of the relay T3; the other end of the transistor T3 is connected to the ground wire GND.

7. The display screen of an electric vehicle according to claim 1, wherein: The fault - indication unit includes a diode D1, a normally - open contact S32, an indicator light L1, a triode Q3, and a normally - open contact S31. Among them, the positive terminal of the diode D1 is connected to the collector terminal of the triode Q1; the negative terminal of the diode D1 is respectively connected to one end of the normally - open contact S32 and the positive terminal of the indicator light L1; the other end of the normally - open contact S32 is respectively connected to the negative terminal of the diode D2, the base terminal of the triode Q3, and one end of the normally - open contact S31; the other end of the normally - open contact S31 is connected to the positive terminal of the diode D3; the collector terminal of the triode Q3 is connected to the negative terminal of the indicator light L1; the emitter terminal of the triode Q3 is connected to the ground wire GND.

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