CN212323763U - Vehicle-mounted charger with under-voltage protection - Google Patents

Abstract

The utility model discloses a vehicle-mounted charger with under-voltage protection, which comprises a charger shell bottom, a support plate, a support block and a threaded shaft control unit; the charger shell bottom: the charger comprises a charger shell bottom, a charger main body and a fixing plate, wherein a voltage sensor is fixedly connected to the rear side of the upper surface of the charger shell bottom; a support plate: the supporting plates are fixedly connected to the front side of the upper surface of the bottom of the charger shell, the two supporting plates are provided with round holes, a metal short shaft is fixedly sleeved in the round hole in the supporting plate on the left side, and the left end of the metal short shaft is fixedly connected with a first electric wire; this take under-voltage protection's on-vehicle charger can be when the car strikes sparks, automatic cutout, and the protection car normally strikes sparks, can effectively solve the problem in the background art.

Description

Vehicle-mounted charger with under-voltage protection

Technical Field

The utility model relates to a vehicle charger technical field specifically is a take under-voltage protection's vehicle charger.

Background

The vehicle-mounted charger is a vehicle-mounted charger which is powered by a conventional automobile battery (12V for cars and 24V for trucks), and is widely used in the field of lithium battery charging of various portable and handheld devices. However, when the automobile is ignited, the existing vehicle-mounted charger still goes out of the charging state, which causes the ignition failure of the automobile and influences the normal use

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a take under-voltage protection's on-vehicle charger, can be when the car strikes sparks, automatic cutout, the protection car normally strikes sparks, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a vehicle-mounted charger with under-voltage protection comprises a charger shell bottom, a supporting plate, a supporting block and a threaded shaft control unit;

the charger shell bottom: a voltage sensor is mounted on the rear side of the upper surface of the charger shell bottom, a current sensor is mounted on the upper surface of the charger shell bottom, the upper surface of the charger shell bottom is fixedly connected with a charger inner main body, and the upper surface of the charger shell bottom is fixedly connected with a fixing plate;

a support plate: the two supporting plates are fixedly connected with the front side of the upper surface of the charger shell bottom, round holes are arranged on the two supporting plates, a metal short shaft is fixedly sleeved in the round hole on the supporting plate on the left side, the left end of the metal short shaft is fixedly connected with a first electric wire, the other end of the first electric wire is one end for receiving an external power supply, the first electric wire penetrates through the detection holes of the voltage sensor and the current sensor, a metal threaded pipe is movably sleeved in the round hole on the supporting plate on the right side, the side surface of the metal threaded pipe is provided with two limiting grooves, the right side surface of the supporting plate on the right side is fixedly connected with a limiting block, two limiting blocks are arranged and are respectively connected with the limiting grooves in a sliding mode, the left end of the side face of the metal threaded pipe is fixedly connected with a second electric wire, and the other end of the second electric wire is electrically connected with the input end of the charger inner main body;

supporting blocks: the supporting block is fixedly connected to the right side of the upper surface of the bottom of the charger shell, a threaded shaft is rotatably connected to the supporting block and penetrates through the right side of the supporting block, and the threaded shaft is in threaded connection with a metal threaded pipe;

threaded shaft control unit: the threaded shaft control unit is arranged on the right side of the upper surface of the charger shell bottom;

wherein: the control circuit further comprises a single-chip microcomputer control module, and the input end of the single-chip microcomputer control module is electrically connected with the first wire, the voltage sensor and the output end of the current sensor.

Furthermore, the threaded shaft control unit comprises a motor, a driving wheel, a belt and a driven wheel, the motor is installed on the fixed plate, the driving wheel is fixedly sleeved on an output shaft of the motor, the driven wheel is fixedly sleeved on the right end of the side face of the threaded shaft, the driving wheel is in transmission connection with the driven wheel through the belt, and the input end of the motor is electrically connected with the output end of the single chip microcomputer control module. By starting the motor, the output shaft of the motor rotates to drive the transmission wheel to rotate, the transmission wheel rotates to drive the belt to rotate, the belt rotates to drive the driven wheel to rotate, and the driven wheel rotates to drive the threaded shaft to rotate.

Furthermore, the supporting device also comprises two reinforcing rings, wherein the reinforcing rings are fixedly sleeved on the side surfaces of the threaded shaft, and the two reinforcing rings are respectively and rotatably connected with the left side surface and the right side surface of the supporting block. After the threaded shaft works for a long time, the threaded shaft is easy to loosen, the threaded shaft can be prevented from loosening through the reinforcing ring, and the service life of the threaded shaft is prolonged.

And the limiting ring is fixedly sleeved at the left end of the side surface of the metal threaded pipe and is positioned on the right side of the second electric wire. Through the spacing ring, the metal threaded pipe can be prevented from being separated from the supporting plate on the right side when moving rightwards.

Furthermore, the metal threaded pipe comprises a clamping groove and a convex block, wherein the clamping groove is formed in the right end of the metal short shaft, the convex block is fixedly connected to the left end of the metal threaded pipe, and the clamping groove is matched with the convex block. When the metal threaded pipe touches the metal short shaft, the first electric wire and the second electric wire are electrified, the time is long, the metal short shaft and the metal threaded pipe can not be tightly fed and discharged, and the metal short shaft and the metal threaded pipe can be connected more stably through the clamping groove and the bump.

Compared with the prior art, the beneficial effects of the utility model are that: this take undervoltage protection's on-vehicle charger has following benefit:

1. the vehicle-mounted charger with the under-voltage protection is provided with the threaded shaft control unit, an output shaft of the motor can rotate to drive the transmission wheel to rotate by starting the motor, the transmission wheel can rotate to drive the belt to rotate, the belt can rotate to drive the driven wheel to rotate, and the driven wheel can rotate to drive the threaded shaft to rotate;

2. according to the vehicle-mounted charger clamping groove and the bump with the under-voltage protection, when the metal threaded pipe touches the metal short shaft, the first electric wire and the second electric wire are electrified, the time is long, the metal short shaft and the metal threaded pipe cannot pass in and out tightly, and the connection between the metal short shaft and the metal threaded pipe can be more stable through the clamping groove and the bump;

3. this take under-voltage protection's on-vehicle charger can be when the car strikes sparks, automatic cutout, and the protection car normally strikes sparks, can effectively solve the problem in the background art.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the metal threaded pipe of the present invention.

In the figure: the charger comprises a charger shell bottom 1, a support plate 2, a support block 3, a limit groove 4, a metal short shaft 5, a metal threaded pipe 6, a threaded shaft 7, a fixing plate 8, a threaded shaft control unit 9, a motor 91, a driving wheel 92, a belt 93, a driven wheel 94, a limit block 10, a wire I11, a wire II 12, a voltage sensor 13, a current sensor 14, a charger inner main body 15, a reinforcing ring 16, a limit ring 17, a clamping groove 18, a bump 19 and a singlechip control module 20.

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. 1-2, the present invention provides a technical solution: a vehicle-mounted charger with under-voltage protection comprises a charger shell bottom 1, a support plate 2, a support block 3 and a threaded shaft control unit 9;

charger case bottom 1: a voltage sensor 13 is arranged on the rear side of the upper surface of the charger shell bottom 1, a current sensor 14 is arranged on the upper surface of the charger shell bottom 1, a charger inner main body 15 is fixedly connected to the upper surface of the charger shell bottom 1, and a fixing plate 8 is fixedly connected to the upper surface of the charger shell bottom 1;

the supporting plate 2: the support plate 2 is fixedly connected with the front side of the upper surface of the charger shell bottom 1, the two support plates 2 are provided, round holes are arranged on the two support plates 2, a metal short shaft 5 is fixedly sleeved in the round hole on the left support plate 2, the left end of the metal short shaft 5 is fixedly connected with a first electric wire 11, the other end of the first electric wire 11 is used for receiving an external power supply, the first electric wire 11 penetrates through detection holes of a voltage sensor 13 and a current sensor 14, a metal threaded pipe 6 is movably sleeved in a round hole in the supporting plate 2 on the right side, two limiting grooves 4 are formed in the side surface of the metal threaded pipe 6, limiting blocks 10 are fixedly connected to the right side surface of the supporting plate 2 on the right side, two limiting blocks 10 are arranged and are respectively in sliding connection with the limiting grooves 4, the left end of the side surface of the metal threaded pipe 6 is fixedly connected with a second electric wire 12, and the other end of the second electric wire 12 is electrically connected with an input end of an inner main body 15 of the charger; the wire harness fixing device further comprises a limiting ring 17, wherein the limiting ring 17 is fixedly sleeved at the left end of the side face of the metal threaded pipe 6 and is positioned at the right side of the wire II 12. The metal short shaft structure further comprises a clamping groove 18 and a bump 19, the clamping groove 18 is formed in the right end of the metal short shaft 5, the bump 19 is fixedly connected to the left end of the metal threaded pipe 6, and the clamping groove 18 is matched with the bump 19. The metal threaded pipe 6 can be prevented from being separated from the support plate 2 on the right side when moving rightwards by the limiting ring 17. When the metal threaded pipe 6 touches the metal short shaft 5, the first electric wire 11 and the second electric wire 12 are electrified, the time is long, the metal short shaft 5 and the metal threaded pipe 6 can not be tightly moved in and out, and the connection between the metal short shaft 5 and the metal threaded pipe 6 can be more stable through the clamping groove 18 and the bump 19;

and (3) supporting block: the supporting block 3 is fixedly connected to the right side of the upper surface of the charger shell bottom 1, the supporting block 3 is rotatably connected with a threaded shaft 7, the threaded shaft 7 penetrates through the right side of the supporting block 3, and the threaded shaft 7 is in threaded connection with the metal threaded pipe 6; the supporting device further comprises two reinforcing rings 16, the reinforcing rings 16 are fixedly sleeved on the side faces of the threaded shaft 7, and the two reinforcing rings 16 are respectively in rotating connection with the left side face and the right side face of the supporting block 3. After the threaded shaft 7 works for a long time, the threaded shaft 7 is easy to loosen, the threaded shaft 7 can be prevented from loosening through the reinforcing ring 16, and the service life of the threaded shaft 7 is prolonged;

threaded shaft control unit 9: the threaded shaft control unit 9 is arranged on the right side of the upper surface of the charger shell bottom 1; the threaded shaft control unit 9 comprises a motor 91, a driving wheel 92, a belt 93 and a driven wheel 94, the motor 91 is mounted on the fixing plate 8, the driving wheel 92 is fixedly sleeved on an output shaft of the motor 91, the driven wheel 94 is fixedly sleeved on the right end of the side face of the threaded shaft 7, the driving wheel 92 and the driven wheel 94 are in transmission connection through the belt 93, and the input end of the motor 91 is electrically connected with the output end of the singlechip control module 20. By starting the motor 91, the output shaft of the motor 91 rotates to drive the transmission wheel 92 to rotate, the transmission wheel 92 rotates to drive the belt 93 to rotate, the belt 93 rotates to drive the driven wheel 94 to rotate, and the driven wheel 94 rotates to drive the threaded shaft 7 to rotate;

wherein: the single-chip microcomputer control module 20 is further included, and an input end of the single-chip microcomputer control module 20 is electrically connected with output ends of the first electric wire 11, the voltage sensor 13 and the current sensor 14.

When in use:

firstly, the metal short shaft 5 and the metal threaded pipe 6 in the initial state are in a contact state, the vehicle-mounted charger is normally charged, when the vehicle is ignited, the total current of the automobile storage battery is unchanged, the current flowing from the automobile storage battery to the vehicle-mounted charger is reduced, namely the current flowing to the first electric wire 11 is reduced, the current sensor 14 can sense the current reduction, then the current sensor 14 transmits an electric signal to the singlechip control module 20, the motor 91 is controlled to be started by the singlechip control module 20, the output shaft of the motor 91 can drive the transmission wheel 92 to rotate by starting the motor 91, the transmission wheel 92 can drive the belt 93 to rotate by rotating, the driven wheel 94 can be driven by rotating the belt 93 to rotate, the threaded shaft 7 can be driven by rotating the threaded shaft 7 to move the metal threaded pipe 6 to the right, and the metal threaded pipe 6 is far away from the metal short shaft 5, the short metal shaft 5 is disconnected, after the short metal shaft 5 is disconnected, the power supply of the second electric wire 12 is disconnected, then the power supply of the main body 15 inside the charger is disconnected, the charging of the vehicle-mounted charger is stopped, after the ignition is finished, the current on the first electric wire 11 returns to be normal, the current sensor 14 transmits a signal to the single-chip microcomputer control module 20 after detecting, the single-chip microcomputer control module 20 controls the motor 91 to be started, the output shaft of the motor 91 rotates to drive the transmission wheel 92 to rotate, the transmission wheel 92 rotates to drive the belt 93 to rotate, the belt 93 rotates to drive the driven wheel 94 to rotate, the driven wheel 94 rotates to drive the threaded shaft 7 to rotate, the threaded shaft 7 rotates to drive the metal threaded pipe 6 to move leftwards, then the short metal shaft 5 and the metal threaded pipe 6 are.

It is worth noting that the single chip microcomputer is preferably a PLC single chip microcomputer, the specific model is STM32F103R8T6, the motor 91 can be a bracelet vibration direct current motor of Shenzhen Xin Shen science and technology Limited, the voltage sensor 13 can be an industrial voltage sensor of Hangzhou American control automation technology Limited, and the current sensor 14 can be a Hall current sensor of Shenzhen Xin Ke Shen electric Limited. The operation of the motor 91 is controlled by the single chip microcomputer control module 20 by a method commonly used in the prior art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a take under-voltage protection's on-vehicle charger which characterized in that: the charger comprises a charger shell bottom (1), a support plate (2), a support block (3) and a threaded shaft control unit (9);

charger housing bottom (1): a voltage sensor (13) is mounted on the rear side of the upper surface of the charger shell bottom (1), a current sensor (14) is mounted on the upper surface of the charger shell bottom (1), a charger inner main body (15) is fixedly connected to the upper surface of the charger shell bottom (1), and a fixing plate (8) is fixedly connected to the upper surface of the charger shell bottom (1);

support plate (2): the charger is characterized in that the supporting plate (2) is fixedly connected to the front side of the upper surface of the charger shell bottom (1), the supporting plate (2) is provided with two supporting plates (2), round holes are formed in the supporting plates, a metal short shaft (5) is fixedly sleeved in the round hole in the left supporting plate (2), a first electric wire (11) is fixedly connected to the left end of the metal short shaft (5), the other end of the first electric wire (11) is one end for receiving an external power supply, the first electric wire (11) penetrates through detection holes of a voltage sensor (13) and a current sensor (14), a metal threaded pipe (6) is movably sleeved in the round hole in the supporting plate (2) on the right side, a limiting groove (4) is formed in the side surface of the metal threaded pipe (6), the limiting grooves (4) are provided with two limiting blocks (10), the limiting blocks (10) are fixedly connected to the right side surface of the supporting plate (2) on the right side, the left end of the side face of the metal threaded pipe (6) is fixedly connected with a second electric wire (12), and the other end of the second electric wire (12) is electrically connected with the input end of the charger inner main body (15);

a support block (3): the supporting block (3) is fixedly connected to the right side of the upper surface of the charger shell bottom (1), a threaded shaft (7) is rotatably connected to the supporting block (3), the threaded shaft (7) penetrates through the right side of the supporting block (3), and the threaded shaft (7) is in threaded connection with a metal threaded pipe (6);

threaded shaft control unit (9): the threaded shaft control unit (9) is arranged on the right side of the upper surface of the charger shell bottom (1);

wherein: the intelligent control system is characterized by further comprising a single-chip microcomputer control module (20), wherein the input end of the single-chip microcomputer control module (20) is electrically connected with the output ends of the first wire (11), the voltage sensor (13) and the current sensor (14).

2. The vehicle-mounted charger with the under-voltage protection function of claim 1, wherein: the threaded shaft control unit (9) comprises a motor (91), a driving wheel (92), a belt (93) and a driven wheel (94), the motor (91) is installed on the fixing plate (8), the driving wheel (92) is fixedly sleeved on an output shaft of the motor (91), the driven wheel (94) is fixedly sleeved on the right end of the side face of the threaded shaft (7), the driving wheel (92) and the driven wheel (94) are in transmission connection through the belt (93), and the input end of the motor (91) is electrically connected with the output end of the single-chip microcomputer control module (20).

3. The vehicle-mounted charger with the under-voltage protection function of claim 1, wherein: the supporting device is characterized by further comprising two reinforcing rings (16), wherein the reinforcing rings (16) are fixedly sleeved on the side faces of the threaded shaft (7), and the two reinforcing rings (16) are respectively in rotating connection with the left side face and the right side face of the supporting block (3).

4. The vehicle-mounted charger with the under-voltage protection function of claim 1, wherein: the wire harness fixing device is characterized by further comprising a limiting ring (17), wherein the limiting ring (17) is fixedly sleeved at the left end of the side face of the metal threaded pipe (6) and is located on the right side of the second wire (12).

5. The vehicle-mounted charger with the under-voltage protection function of claim 1, wherein: still include draw-in groove (18) and lug (19), draw-in groove (18) are seted up at the right-hand member of metal minor axis (5), lug (19) fixed connection is at the left end of metal screwed pipe (6), draw-in groove (18) and lug (19) cooperation.

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