CN216979167U

CN216979167U - High-voltage measuring device

Info

Publication number: CN216979167U
Application number: CN202220120686.8U
Authority: CN
Inventors: 赵春雨; 郭海豹; 王肇宇; 于浩; 张�杰; 张广会; 尤晓明
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-07-15
Anticipated expiration: 2032-01-18

Abstract

The application relates to a high-voltage electric measuring device for measure the electric current and the voltage of the pencil that awaits measuring, high-voltage electric measuring device includes: the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity penetrating through the shell is formed in the first direction; the measuring module is arranged in the accommodating cavity and comprises two wiring ends which are oppositely arranged along the first direction, and the two wiring ends are respectively used for being connected with the two wire harnesses to be measured; the two end covers are detachably connected to two ends of the shell along the first direction so as to seal the accommodating cavity; and each end cover is provided with a first wire passing hole for the wire harness to be tested to pass through. The high-voltage electric measuring device can measure the voltage and the current of the motor under the condition that the wiring structure in the motor and the motor controller is not disturbed. And the measuring module connected with the wire harness to be measured can be arranged in the blocked accommodating cavity, so that the installation is simple and convenient, and the safety of the high-voltage measuring process is ensured.

Description

High-voltage measuring device

Technical Field

The application relates to the technical field of high-voltage measurement, in particular to a high-voltage measurement device.

Background

The new energy commercial vehicle generally adopts a high-voltage wire harness to connect all three electric assemblies (motor, battery and electric control) and high-voltage accessories, wherein the motor is driven by alternating current, the current and the voltage of the rest high-voltage assemblies and accessories except the motor CAN output current and voltage values in a CAN (Controller Area Network) of the whole vehicle, the current and the voltage of the motor need to be measured by external equipment, and the current high-voltage measuring device is inconvenient to install.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a high voltage measuring device which is easy to install, aiming at the problem that the existing high voltage measuring device is inconvenient to install.

According to an aspect of the present application, there is provided a high voltage measurement device for measuring current and voltage of a wire harness to be measured, the high voltage measurement device comprising:

the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity penetrating through the shell is formed in the first direction;

the measuring module is arranged in the accommodating cavity and comprises two wiring ends which are oppositely arranged along the first direction, and the two wiring ends are respectively used for being connected with the two wire harnesses to be measured; and

the two end covers are detachably connected to two ends of the shell along the first direction so as to seal the accommodating cavity; and each end cover is provided with a first wire passing hole for the wire harness to be tested to pass through.

In one embodiment, the high-voltage measuring device further comprises a wiring harness fixing plate arranged in the accommodating cavity, and two wire pressing plates arranged along the first direction at intervals;

the two wire pressing plates are respectively connected to two ends of the wire harness fixing plate along the first direction.

In one embodiment, the wire harness fixing plate comprises two fixing seats arranged at intervals along the first direction;

the two wire pressing plates are respectively connected with the corresponding two fixing seats.

In one embodiment, the fixing seat is provided with a first semicircular groove matched with the outer peripheral surface of one side of the wire harness to be tested, and the wire pressing plate is provided with a second semicircular groove matched with the outer peripheral surface of the other side of the wire harness to be tested.

In one embodiment, the wire pressing plate is connected with the fixed seat through a bolt.

In one embodiment, the wire harness to be tested is connected with the terminal through a bolt.

In one embodiment, two ends of the housing along the first direction are provided with sealing grooves;

the high-voltage measurement device further comprises a sealing ring embedded in the sealing groove.

In one embodiment, the high-voltage measurement device further comprises a first sealing sleeve sleeved on the wire harness to be measured, and the first sealing sleeve is matched with the first wire passing hole.

In one embodiment, the high-voltage measuring device further comprises two external wiring harnesses connected to the measuring module, and the external wiring harnesses at least partially extend out of the accommodating cavity;

each end cover is also provided with a second wire passing hole for the external wiring harness to pass through.

In one embodiment, the high-voltage measurement device further comprises a second sealing sleeve sleeved on the external wiring harness, and the second sealing sleeve is matched with the second wiring hole.

The high-voltage electric measuring device is connected with the two wire harnesses to be measured respectively through the measuring module with the two wiring ends, and the voltage and the current of the motor can be measured under the condition that the wiring structures in the motor and the motor controller are not disturbed. Through setting up casing and two end covers that have first line hole of crossing, can set up the measuring module who is connected with the pencil that awaits measuring in the holding chamber by the shutoff, the simple installation has guaranteed high-tension electricity measurement process's security simultaneously.

Drawings

Fig. 1 is an external structural diagram of a high voltage measurement device in an embodiment of the present application;

FIG. 2 is a schematic diagram of the internal structure of the high voltage measurement device shown in FIG. 1;

FIG. 3 is an exploded schematic view of the high voltage measurement device shown in FIG. 1;

fig. 4 is a schematic structural view of a wire harness fixing plate and a wire pressing plate in an embodiment of the present application.

Description of the reference numerals

1. A housing; 11. an accommodating cavity; 12. a sealing groove; 2. a measurement module; 21. a terminal; 3. an end cap; 31. a first wire passing hole; 32. a second wire passing hole; 4. a wire harness fixing plate; 41. a fixed seat; 411. a first semicircular groove; 5. a wire pressing plate; 51. a second semi-circular groove; 6. externally connecting a wire harness; 7. a wire harness to be tested; 71. a connector lug.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The new energy commercial vehicle generally adopts a high-voltage wire harness to connect all three electric assemblies (a motor, a battery and an electric control) and high-voltage accessories, wherein the motor is driven by alternating current, the current and the voltage of the other high-voltage assemblies and accessories except the motor CAN output the current and the voltage values in a CAN (Controller Area Network) of the whole vehicle, the current and the voltage of the motor need to be measured by external equipment, and the current high-voltage measuring device is inconvenient to install.

Referring to fig. 1 and 2, a high voltage measurement apparatus provided in an embodiment of the present application is used for measuring current and voltage of a wire harness 7 to be measured, and includes a housing 1, a measurement module 2, and two end caps 3. The housing 1 is provided with an accommodating cavity 11 penetrating through the housing 1 along a first direction. Measuring module 2 sets up in holding chamber 11, and measuring module 2 includes two wiring ends 21 along the relative setting of first direction, and two wiring ends 21 are used for being connected with two pencil 7 that await measuring respectively. The two end caps 3 are detachably connected to two ends of the housing 1 along the first direction to seal the accommodating cavity 11. Each end cover 3 is provided with a first wire passing hole 31 for the wire harness 7 to be tested to pass through.

It should be understood that during normal operation of the vehicle, the motor is connected to the motor controller by a high voltage wiring harness. When the high-voltage electric measuring device is used for carrying out electric measurement on an automobile, two wire harnesses 7 to be measured are arranged, one wire harness 7 to be measured is connected with a motor, the other wire harness 7 to be measured is connected with a motor controller, and two wiring terminals 21 of the measuring module 2 are respectively connected with the tail ends of the two wire harnesses 7 to be measured, so that the current and the voltage of the high-voltage wire harness between the motor and the motor controller are measured. Therefore, the voltage and the current of the motor can be measured under the condition that the wiring structure in the motor and the motor controller is not disturbed.

Referring to fig. 3, the installation process of the high voltage measurement device and the two wire harnesses 7 to be measured is as follows, firstly, one of the wire harnesses 7 to be measured sequentially passes through the first wire passing hole 31 on one of the end covers 3 and the accommodating cavity 11 of the housing 1, so that the end cover 3 and the housing 1 penetrate through the wire harness 7 to be measured, and then the other wire harness 7 to be measured passes through the first wire passing hole 31 on the other end cover 3. The ends of the two wire harnesses 7 to be measured are then connected to the two terminals 21 of the measuring module 2, respectively. And finally, the shell 1 is moved to the outer peripheral side of the measuring module 2, so that the measuring module 2 connected with the wire harness 7 to be measured is accommodated in the accommodating cavity 11, and the two end covers 3 are respectively connected to the two ends of the shell 1 along the first direction so as to block the accommodating cavity 11, thereby providing a waterproof and sealed test environment for subsequent high-voltage measurement and ensuring the safety of the high-voltage measurement process.

The high-voltage electric measuring device is respectively connected with two wire harnesses 7 to be measured through the measuring module 2 with the two wiring ends 21, and the voltage and the current of the motor can be measured under the condition that the wiring structure inside the motor and the motor controller is not disturbed. Through setting up casing 1 and two end covers 3 that have first line hole 31 of crossing, can set up the measuring module 2 of being connected with the pencil 7 that awaits measuring in the holding chamber 11 by the shutoff, simple installation has guaranteed high-tension electricity measurement process's security simultaneously.

Further, the high-voltage measuring device further comprises a wire harness fixing plate 4 arranged in the accommodating cavity 11, and two wire pressing plates 5 arranged at intervals along the first direction. The two wire pressing plates 5 are respectively connected to two ends of the wire harness fixing plate 4 in the first direction. After accomplishing two pencil 7 and the measuring module 2 that await measuring be connected, set up pencil fixed plate 4 and two line ball boards 5 respectively in the radial both sides of pencil 7 that awaits measuring, connect two line ball boards 5 in the both ends of pencil fixed plate 4 along first direction, make the outer peripheral face of pencil 7 that awaits measuring compressed tightly and be fixed in between pencil fixed plate 4 and the line ball board 5, help guaranteeing that the wiring is firm. As a preferred embodiment, the wire harness fixing plate 4 is made of bakelite, which has good insulation and heat resistance, so as to further ensure the safety of the high-voltage measurement process.

Referring to fig. 4, the wire harness fixing plate 4 includes two fixing bases 41 arranged at intervals along the first direction, and the two wire pressing plates 5 are respectively connected to the two corresponding fixing bases 41. The peripheral face of the wire harness 7 to be tested is pressed and fixed between the fixing seat 41 and the wire pressing plate 5, and the wire connection is guaranteed firmly. In some embodiments, the tension plate 5 is connected to the fixing base 41 by bolts, so that the connection is reliable and the installation and the disassembly are convenient.

In some preferred embodiments, the fixing base 41 is provided with a first semicircular groove 411 matched with the outer peripheral surface of one side of the wire harness 7 to be tested, and the wire pressing plate 5 is provided with a second semicircular groove 51 matched with the outer peripheral surface of the other side of the wire harness 7 to be tested. First semicircle groove 411 and second semicircle groove 51 cooperate with the outer peripheral face of the radial both sides of pencil 7 that awaits measuring respectively, have increased the area of contact of pencil 7 that awaits measuring with fixing base 41, line ball board 5, have further guaranteed that the wiring is firm.

In some embodiments, the wire harness 7 to be tested is connected with the terminal 21 through bolts, and the connection is reliable and convenient to mount and dismount. Referring to fig. 3, the terminal of the wire harness 7 to be tested is provided with a connector lug 71, and the connector lug 71 and the terminal 21 are both provided with connecting holes. When connecting, the connecting holes of the connector lug 71 are aligned with the connecting holes of the terminal 21, bolts are inserted through the two connecting holes, and the two connecting holes are screwed and fixed by nuts, so that the firm connection is ensured.

In some embodiments, the two ends of the housing 1 along the first direction are provided with a sealing groove 12, and the high voltage measurement apparatus further includes a sealing ring (not shown) embedded in the sealing groove 12, so that the two end caps 3 are hermetically connected to the two ends of the housing 1 along the first direction. The sealing ring can be plastically deformed to fill a gap between the joint of the shell 1 and the end cover 3, so that the waterproof sealing performance of the high-voltage measurement device is improved, and the safety of the high-voltage measurement process is further ensured.

In some embodiments, the high voltage measurement apparatus further includes a first sealing sleeve (not shown) for sleeving the wire harness 7 to be measured, and the first sealing sleeve is matched with the first wire passing hole 31. The first sealing sleeve can be plastically deformed to fill a gap between the peripheral surface of the wire harness 7 to be measured and the hole wall of the first wire passing hole 31, so that the waterproof sealing performance of the high-voltage measurement device is improved, and the safety of the high-voltage measurement process is further ensured.

In some embodiments, the high voltage measurement apparatus further includes two external wiring harnesses 6 connected to the measurement module 2, the external wiring harnesses 6 at least partially protrude out of the accommodating cavity 11, and each end cap 3 is further provided with a second wire passing hole 32 for the external wiring harnesses 6 to pass through. Before the two end covers 3 are connected to the housing 1, the two external harnesses 6 need to pass through the second wire passing holes 32 of the two end covers 3, so that at least part of the external harnesses 6 extend out of the accommodating cavity 11, and are connected to auxiliary measuring equipment outside the housing 1.

In a preferred embodiment, the high voltage measurement device further includes a second sealing sleeve (not shown) for sleeving the external wiring harness 6, and the second sealing sleeve is matched with the second wire passing hole 32. The second sealing sleeve can be plastically deformed to fill a gap between the peripheral surface of the wire harness 7 to be measured and the hole wall of the second wire passing hole 32, so that the waterproof sealing performance of the high-voltage measurement device is improved, and the safety of the high-voltage measurement process is further ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the patent. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of this patent shall be subject to the appended claims.

Claims

1. A high voltage measurement device for measuring current and voltage of a wire harness to be measured, comprising:

2. The high voltage measurement device according to claim 1, further comprising a harness fixing plate disposed in the accommodating chamber, and two wire pressing plates spaced from each other along the first direction;

3. The high voltage measurement device as claimed in claim 2, wherein the harness fixing plate includes two fixing seats spaced along the first direction;

4. The high voltage measuring device according to claim 3, wherein the fixing base is provided with a first semicircular groove matched with the outer peripheral surface of one side of the wire harness to be measured, and the wire pressing plate is provided with a second semicircular groove matched with the outer peripheral surface of the other side of the wire harness to be measured.

5. The high voltage measurement device according to claim 3, wherein the tension bar is bolted to the mounting base.

6. The high voltage measurement device according to any one of claims 1 to 5, wherein the wiring harness to be tested is bolted to the terminal.

7. The high voltage measurement device according to any one of claims 1 to 5, wherein the housing is provided with a sealing groove at both ends in the first direction;

8. The high-voltage measurement device as claimed in any one of claims 1 to 5, further comprising a first sealing sleeve for sleeving the wire harness to be tested, wherein the first sealing sleeve is matched with the first wire passing hole.

9. The high voltage measurement device according to any one of claims 1 to 5, further comprising two external wiring harnesses connected to the measurement module, the external wiring harnesses at least partially protruding out of the accommodating cavity;

10. The high-voltage measuring device according to claim 9, further comprising a second sealing sleeve for sheathing the external wiring harness, wherein the second sealing sleeve is matched with the second wiring hole.