CN210572524U

CN210572524U - Device for monitoring electrical connection integrity and opening and closing of upper cover of high-voltage distribution box

Info

Publication number: CN210572524U
Application number: CN201920893763.1U
Authority: CN
Inventors: 梅运冬; 胡凤生
Original assignee: Shenzhen Basiba Automobile Electronics Co ltd
Current assignee: Shenzhen Basiba Automobile Electronics Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-05-19
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a device of monitoring high voltage distribution box electrical connection integrality and upper cover switching, including AC1 socket, AC2 socket, AC3 socket, HVIL socket, micro-gap switch, PDU upper cover, PDU box, wherein the PDU box is installed AC1 socket, AC2 socket, AC3 socket, HVIL socket, micro-gap switch and PDU upper cover contact install the PDU upper cover on the PDU box and with screw fixed connection. The beneficial effect of adopting above-mentioned technical scheme is: the AC1 socket, the AC2 socket, the AC3 socket, the HVIL socket and the microswitch are connected in series to form an interlocking circuit, so that the integrity of the electrical connection and the opening and closing of the upper cover are monitored, and an alarm is sent when the electrical connection is loosened and the upper cover is opened.

Description

Device for monitoring electrical connection integrity and opening and closing of upper cover of high-voltage distribution box

Technical Field

The utility model relates to a new energy automobile trade high voltage distribution technical field particularly, relates to a device of monitoring high voltage junction box electrical connection integrality and upper cover switching.

Background

The existing electric vehicles are basically provided with high-voltage junction boxes, and the high-voltage junction boxes of the electric vehicles are connected with a plurality of subsystems, and every two subsystems are connected with each other through high-voltage connectors. The environment of operation simultaneously is very abominable, and the most of cases is in vibration and impact condition, and high-voltage connector drops and can lead to the disconnection of junction box high-pressure return circuit or the integrality receives destruction to and the risk of intaking that the upper cover screw pine takes off the upper cover that leads to not lock and bring, and then threatens passenger life safety. It is therefore desirable to develop a device that employs an interlock circuit to monitor the integrity of the electrical connection of the high voltage distribution box and the opening and closing of the cover in order to send an alarm when the electrical connection is loose or the cover is open.

Disclosure of Invention

To the problem among the correlation technique, the utility model provides a device of monitoring high-pressure junction box electrical connection integrality and upper cover switching to solve the problem of high-pressure junction box electrical connection integrality and upper cover switching monitoring.

In order to solve the technical problem, the utility model discloses a technical scheme does: a device for monitoring the electrical connection integrity and the opening and closing of an upper cover of a high-voltage distribution box comprises an AC1 socket, an AC2 socket, an AC3 socket, an HVIL socket, a microswitch, a PDU upper cover and a PDU box body, wherein the PDU box body is provided with the AC1 socket, the AC2 socket, the AC3 socket, the HVIL socket and the microswitch, the microswitch is contacted with the PDU upper cover, and the PDU box body is provided with the PDU upper cover which is fixedly connected by screws;

the AC1 socket is provided with a 11 th pin, a 12 th pin, a 13 th pin, a 14 th pin, a 15 th pin, a 17 th pin and an 18 th pin, the AC2 socket is provided with a 21 st pin, a 22 nd pin, a 23 rd pin, a 24 th pin, a 25 th pin, a 27 th pin and a 28 th pin, the AC3 socket is provided with a 31 th pin, a 32 th pin, a 33 th pin, a 34 th pin, a 35 th pin, a 37 th pin and a 38 th pin, the HVIL socket is provided with a 41 th pin, a 42 th pin and a 43 th pin, the microswitch is provided with a 51 st pin, a 52 th pin and a 53 th pin, the control center is provided with a 61 st pin, a 62 th pin, a 63 th pin and a 64 th pin, wherein the 43 th pin is connected with the 53 th pin, the 51 th pin is connected with the 17 th pin, the 18 th pin is connected with the 27 th pin, the 28 th pin is connected with the 37 th pin, the 38 th pin is connected with the 42 th pin, the 42 th pin (42) is connected with the 64 th pin (43), the 63) is connected with the 62 th pin (62) and the external power supply (62, the AC1 socket (3), the AC2 socket (4), the AC3 socket (5), the HVIL socket (6), the microswitch (7) and the control center (2) are connected in series to form a high-voltage interlocking circuit, the high-voltage interlocking circuit is provided with 12V voltage by the control center (2) and detects an electric signal of the interlocking circuit, and the control center (2) does not detect the electric signal within 500ms, and then deems that the interlocking circuit is disconnected and sends an alarm.

Preferably, the distance between the AC1 socket and the AC2 socket is equal to the distance between the AC2 socket and the AC3 socket, the ports of the AC1 socket, the AC2 socket and the AC3 socket are flush, the socket directions of the AC1 socket, the AC2 socket and the AC3 socket are the same, the AC1 socket, the AC2 socket and the AC3 socket are respectively provided with four screw holes for fixing, and the AC1 socket, the AC2 socket, the AC3 socket and the PDU box are fixedly connected through screws.

Preferably, the 11 th pin of the AC1 socket, the 21 st pin of the AC2 socket, the 31 th pin of the AC3 socket are connected together, the 12 th pin of the AC1 socket, the 22 nd pin of the AC2 socket, the 32 nd pin of the AC3 socket are connected together, the 13 th pin of the AC1 socket, the 23 th pin of the AC2 socket, the 33 th pin of the AC3 socket are connected together, the 14 th pin of the AC1 socket, the 24 th pin of the AC2 socket, the 34 th pin of the AC3 socket are connected together, the 15 th pin of the AC1 socket, the 25 th pin of the AC2 socket, the 35 th pin of the AC3 socket are connected together and grounded.

Preferably, be equipped with between PDU upper cover and the PDU box and be used for waterproof sealing washer.

Preferably, the PDU upper cover is pasted with a high-voltage electric hazard identifier.

The beneficial effect of adopting above-mentioned technical scheme is: the AC1 socket, the AC2 socket, the AC3 socket and the micro switch are connected in series to form an interlocking circuit, so that the integrity of the electrical connection and the opening and closing of the upper cover are monitored, and an alarm is sent when the electrical connection is loosened and the upper cover is opened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of an apparatus for monitoring the integrity of electrical connections to a high voltage distribution box and the opening and closing of a top cover;

FIG. 2 is a perspective view of the device for monitoring the electrical connection integrity and the opening and closing of the top cover of the high voltage distribution box without the cover;

FIG. 3 is an exploded view of an apparatus for monitoring the integrity of the electrical connections of a high voltage distribution box and the opening and closing of a top cover;

FIG. 4 is a pin diagram of an apparatus for monitoring the integrity of the electrical connections of a high voltage distribution box and the opening and closing of a top cover;

FIG. 5 is a perspective view of the microswitch;

FIG. 6 is a perspective view of an AC1 receptacle;

FIG. 7 is another angular perspective view of the AC1 receptacle;

FIG. 8-A is an angled perspective view of an HVIL socket;

FIG. 8-B is a perspective view of an alternative angle of an HVIL socket;

FIG. 9-A is an angled perspective view of an HVIL socket latch;

FIG. 9-B is another perspective view of a HVIL socket latch;

fig. 10 is a schematic diagram of a wiring connection.

In the figure, 1-PDU upper cover, 2-control center, 3-AC1 socket, 4-AC2 socket, 5-AC3 socket, 6-HVIL socket, 7-micro switch, 8-sealing ring, 9-PDU box, 10-HVIL socket lock, 11-11 th pin, 12-12 th pin, 13-13 th pin, 14-14 th pin, 15-15 th pin, 17-17 th pin, 18 th pin, 21 st pin, 22 st pin, 23 st pin, 24 th pin, 25 th pin, 27 th pin, 28 th pin, 31 st pin, 32 th pin, 33 th pin, 34 th pin, 35 th pin, 37 th pin, 38 th pin, 41 th pin, 42-42 th foot, 43-43 th foot, 51-51 st foot, 52-52 th foot, 53-53 th foot, 61-61 st foot, 62-62 th foot, 63-63 th foot, 64-64 th foot.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to the attached drawings, the device for monitoring the electrical connection integrity and the opening and closing of the upper cover of the high-voltage distribution box comprises an AC1 socket 3, an AC2 socket 4, an AC3 socket 5, an HVIL socket 6, a microswitch 7, a PDU upper cover 1 and a PDU box body 9, wherein the PDU box body 9 is provided with the AC1 socket 3, the AC2 socket 4, the AC3 socket 5, the HVIL socket 6 and the microswitch 7, the microswitch 7 is in contact with the PDU upper cover 1, and the PDU box body 9 is provided with the PDU upper cover 1 and is fixedly connected with the PDU upper cover 1 through screws;

the AC1 socket 3 is provided with a 11 th pin 11, a 12 th pin 12, a 13 th pin 13, a 14 th pin 14, a 15 th pin 15, a 17 th pin 17 and an 18 th pin 18, the AC2 socket 4 is provided with a 21 st pin 21, a 22 nd pin 22, a 23 th pin 23, a 24 th pin 24, a 25 th pin 25, a 27 th pin 27 and a 28 th pin 28, the AC3 socket 5 is provided with a 31 st pin 31, a 32 th pin 32, a 33 th pin 33, a 34 th pin 34, a 35 th pin 35, a 37 th pin 37 and a 38 th pin 38, the HVIL socket 6 is provided with a 41 th pin 41, a 42 th pin 42 and a 43 th pin 43, the microswitch 7 is provided with a 51 st pin 51, a 52 th pin 52 and a 53 th pin 53, the control center is provided with a 61 st pin 61, a 62 th pin 62, a 63 rd pin 64 th pin 64, the 43 th pin 53, the 51 st pin 51 th pin 17 is connected with the 17 th pin 17, the 18 th pin 28, the 37 th pin 28 th pin 37 th pin 42, the third pin 42 th pin, the 43 rd pin 43 is connected with the 63 th pin 63, the 61 st pin 61 and the 62 nd pin 62 are externally connected with a 12V power supply, the AC1 socket 3, the AC2 socket 5, the AC3 socket 5, the HVIL socket 6 and the microswitch 7 are connected with the control center 2 in series to form a high-voltage interlocking circuit, the high-voltage interlocking circuit is provided with 12V voltage by the control center 2 and detects the electric signal of the interlocking circuit, and the control center 2 does not detect the electric signal within 500ms, then the interlocking circuit is determined to be disconnected and an alarm is sent.

Preferably, the distance between the AC1 socket 3 and the AC2 socket 4 is equal to the distance between the AC2 socket 4 and the AC3 socket 5, the ports of the AC1 socket 3, the AC2 socket 4 and the AC3 socket 5 are flush, and the outlet directions of the AC1 socket 3, the AC2 socket 4 and the AC3 socket 5 are the same. The AC1 socket 3, the AC2 socket 4 and the AC3 socket 5 are all provided with four screw holes for fixing, and the AC1 socket 3, the AC2 socket 4, the AC3 socket 5 are fixedly connected with the PDU box 9 through screws.

Preferably, the 11 th pin 11 of the AC1 socket 3, the 21 st pin 21 of the AC2 socket 4, and the 31 th pin 31 of the AC3 socket 5 are connected together, the 12 th pin 12 of the AC1 socket 3, the 22 th pin 22 of the AC2 socket 4, and the 32 th pin 32 of the AC3 socket 5 are connected together, the 13 th pin 13 of the AC1 socket 3, the 23 th pin 23 of the AC2 socket 4, and the 33 th pin 33 of the AC3 socket 5 are connected together, the 14 th pin 14 of the AC1 socket 3, the 24 th pin 24 of the AC2 socket 4, and the 34 th pin 34 of the AC3 socket 5 are connected together, and the 15 th pin 15 of the AC1 socket 3, the 25 th pin 25 of the AC2 socket 4, and the 35 th pin 35 of the AC3 socket 5 are connected together and grounded. The AC1 socket 3, the AC2 socket 4, and the AC3 socket 5 are high-voltage circuit connectors, and are part of a high-voltage circuit.

Preferably, the PDU upper cover 1 is attached with a high-voltage electric hazard identifier.

Preferably, a waterproof sealing ring 8 is arranged between the PDU upper cover 1 and the PDU box body 9.

Preferably, the microswitch 7 is provided with two screw through holes for fixing, and the microswitch 7 is fixedly connected with the PDU box body 9 through screws.

Preferably, the HVIL socket 6 is inserted into a hole of the PDU housing 9 and then fixed by the HVIL socket lock 10, and the PDU housing 9 is installed between the HVIL socket 6 and the HVIL socket lock 10. The HVIL socket latch 10 snaps onto the HVIL socket 6.

An AC1 socket 3, an AC2 socket 4, an AC3 socket 5, that is, an AC power socket, a socket for general-purpose alternating current. The control center 54 is provided with a 12V power supply and is programmed to monitor the pulse signal. As shown, the 17 th pin, the 18 th pin, the 17 th pin and the 18 th pin in the AC1 socket 3 are disconnected from the inside and the outside, and when a high-voltage plug is inserted into the AC1 socket 3, the 17 th pin and the 18 th pin are connected, so that the AC2 socket 4 and the AC3 socket 5 are also connected, and only then the interlock circuit can be conducted. When the switch handle of the microswitch 7 is pressed down, the 51 st pin 51 and the 53 th pin 53 are conducted, and the interlock circuit is also conducted. After the AC1 socket 3, the AC2 socket 4, the AC3 socket 5 and the microswitch 7 are all turned on, the interlock circuit is turned on, and one of the switches is turned off, so that the interlock circuit is also turned off. The interlock circuit is a low voltage circuit.

The working principle is as follows: the high-voltage interlocking circuit is also called as an HVIL circuit of PDU, one end of the HVIL circuit is connected with the control center 2, and the other end of the HVIL circuit is connected with the AC1 socket 3, the AC2 socket 4 and the AC3 socket 5 in series through the high-voltage distribution box cover opening detection microswitch 7 to form the HVIL circuit. When the PDU upper cover 1 is closed and locked, the microswitch 7 is closed by the pressure of the upper cover, the HVIL loop is normally closed, and the loop is conducted; the HVIL socket 6 transmits the electric signal to the system control center 2, and the system control center 2 inputs voltage after detecting the effective electric signal, so that the electric automobile works normally; when the control center 2 does not acquire the voltage within 500ms, the HVIL is considered to be disconnected, the HVIL fault is detected, and an HVIL disconnection alarm is sent to the control center 2 of the bus. The 61

st pin

61, 62 nd pin 62 are connected with 12V power, the external power provides 12V voltage for the control center 2, the control center 2 provides 12V voltage for the 63

st pin

63, 64 th pin 64 for HVIL loop. The control center 2 is internally provided with a pulse generator for generating a pulse signal, and is also provided with a pulse detector for detecting the pulse signal, and when the control center 2 does not acquire the pulse voltage within 500ms, the interlocking circuit is determined to be disconnected.

Preferably, the AC1 socket 3, the AC2 socket 4, the AC3 socket 5, the HVIL socket 6, the microswitch 7, the PDU cover 1 and the PDU casing 9 are made of plastic materials except for conductive parts, and the plastic materials can resist high voltage.

According to the first specific embodiment, the sealing ring 8 is arranged between the PDU upper cover 1 and the PDU box body 9, the PDU upper cover 1 and the PDU box body 9 are assembled, the monitoring box is hung on a wall, and the side face is placed below the side face due to the fact that the wire outlet of the whole box is arranged on one side face, and therefore the device can be guaranteed not to be in water inflow.

In one embodiment, the microswitch 7 can be replaced in other ways, such as by a spring, similar to the microswitch 7, which is welded to the PDU casing 9.

In one embodiment, a horn + a resistor can be arranged to be connected in parallel with the interlock circuit, the resistance of the horn + a resistor is far larger than the resistances of the AC1 socket 3, the AC2 socket 4, the AC3 socket 5, the HVIL socket 6 and the microswitch 7 in the interlock circuit, when the interlock circuit is closed, the resistances of the AC1 socket 3, the AC2 socket 4, the AC3 socket 5, the HVIL socket 6 and the microswitch 7 are small, the resistance of the horn + resistor is large, the current of the horn is small, the horn can not sound, when the interlock circuit is opened, the current can only flow through the horn loop, and the horn can sound. The horn may also be other warning devices.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The device for monitoring the electrical connection integrity and the opening and closing of the upper cover of the high-voltage distribution box is characterized by comprising an AC1 socket (3), an AC2 socket (4), an AC3 socket (5), an HVIL socket (6), a microswitch (7), a PDU upper cover (1) and a PDU box body (9), wherein the PDU box body (9) is provided with the AC1 socket (3), the AC2 socket (4), the AC3 socket (5), the HVIL socket (6) and the microswitch (7), the microswitch (7) is in contact with the PDU upper cover (1), and the PDU box body (9) is provided with the PDU upper cover (1) and is fixedly connected with the PDU upper cover by screws;

the AC1 socket (3) is provided with a 11 th pin (11), a 12 th pin (12), a 13 th pin (13), a 14 th pin (14), a 15 th pin (15), a 17 th pin (17) and a 18 th pin (18), the AC2 socket (4) is provided with a 21 th pin (21), a 22 th pin (22), a 23 th pin (23), a 24 th pin (24), a 25 th pin (25), a 27 th pin (27) and a 28 th pin (28), the AC3 socket (5) is provided with a 31 th pin (31), a 32 th pin (32), a 33 th pin (33), a 34 th pin (34), a 35 th pin (35), a 37 th pin (37) and a 38 th pin (38), the HVIL socket (6) is provided with a 41 th pin (41), a 42 th pin (42) and a 43 th pin (43), the microswitch (7) is provided with a 51 th pin (51), a 52 th pin (52) and a 53 th pin (53), the control center (2) is provided with a 61, a 62 th pin (63), a 62) and a 63), A 64 th pin (64), wherein a 43 th pin (43) is connected with a 53 th pin (53), a 51 th pin (51) is connected with a 17 th pin (17), an 18 th pin (18) is connected with a 27 th pin (27), a 28 th pin (28) is connected with a 37 th pin (37), a 38 th pin (38) is connected with a 42 th pin (42), a 42 th pin (42) is connected with a 64 th pin (64), a 43 th pin (43) is connected with a 63 th pin (63), a 61 st pin (61) and a 62 th pin (62) are externally connected with a 12V power supply, an AC1 socket (3), an AC2 socket (4), an AC3 socket (5), an HVIL socket (6) and a microswitch (7) are connected with a control center (2) in series to form a high-voltage interlocking circuit, the high-voltage interlocking circuit is provided with 12V voltage by the control center (2) and detects an electric signal of the interlocking circuit, and if the control center (2) does not detect the electric signal within 500ms, the interlocking circuit is determined to be disconnected and an alarm is sent.

2. The device for monitoring the electrical connection integrity and the opening and closing of the upper cover of the high-voltage distribution box according to claim 1, wherein the distance between the AC1 socket (3) and the AC2 socket (4) is equal to the distance between the AC2 socket (4) and the AC3 socket (5), the ports of the AC1 socket (3), the AC2 socket (4) and the AC3 socket (5) are flush, the inserting directions of the AC1 socket (3), the AC2 socket (4) and the AC3 socket (5) are the same, the AC1 socket (3), the AC2 socket (4) and the AC3 socket (5) are respectively provided with four screw holes for fixing, and the AC1 socket (3), the AC2 socket (4) and the AC3 socket (5) are fixedly connected with the PDU box body (9) through screws.

3. The device for monitoring the integrity of electrical connections and the opening and closing of a cover of a high voltage distribution box according to claim 1, wherein the 11 th pin (11) of the AC1 socket (3), the 21 st pin (21) of the AC2 socket (4), the 31 st pin (31) of the AC3 socket (5) are connected together, the 12 th pin (12) of the AC1 socket (3), the 22 th pin (22) of the AC2 socket (4), the 32 th pin (32) of the AC3 socket (5) are connected together, the 13 th pin (13) of the AC1 socket (3), the 23 th pin (23) of the AC2 socket (4), the 33 th pin (33) of the AC3 socket (5) are connected together, the 14 th pin (14) of the AC1 socket (3), the 24 th pin (24) of the AC2 socket (4), the 34 th pin (34) of the AC3 socket (5) are connected together, the 15 th pin (15) of the AC 1) is connected together, The 25 th pin (25) of the AC2 socket (4) and the 35 th pin (35) of the AC3 socket (5) are connected together and grounded.

4. The device for monitoring the electrical connection integrity and the cover opening and closing of the high voltage distribution box according to claim 1, wherein the PDU cover (1) is attached with a high voltage danger indicator.

5. The device for monitoring the electrical connection integrity and the opening and closing of the upper cover of the high-voltage distribution box according to claim 1, characterized in that a sealing ring (8) for water proofing is arranged between the PDU upper cover (1) and the PDU box body (9).