CN218675256U - Charging current and zero sequence current monitoring assembly - Google Patents
Charging current and zero sequence current monitoring assembly Download PDFInfo
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- CN218675256U CN218675256U CN202222664734.2U CN202222664734U CN218675256U CN 218675256 U CN218675256 U CN 218675256U CN 202222664734 U CN202222664734 U CN 202222664734U CN 218675256 U CN218675256 U CN 218675256U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a charging current and zero sequence current monitoring subassembly, which comprises a cover body, be equipped with first cavity, baffle and second cavity on the lid, first cavity with the second cavity passes through the baffle is separated, be provided with first sleeve, second sleeve, charging current transformer and zero sequence current transformer in the first cavity, the charging current transformer cover is located on the first sleeve, the zero sequence current transformer cover is located first sleeve with on the second sleeve. After adopting above-mentioned structure, its beneficial effect is: the problem of current charging current and zero sequence current monitoring subassembly's overall structure overall arrangement reasonable inadequately, the volume is great and partial part can appear falling and rocking often after the integrated installation is solved, still solved the current charging current and the communication module of zero sequence current monitoring subassembly and the power supply and use the problem that the connected mode between the circuit board is not suitable enough is solved.
Description
Technical Field
The utility model belongs to the technical field of the current monitoring, specific theory is about a charging current and zero sequence current monitoring subassembly.
Background
With the development of the automobile industry, the types of automobiles are increased, and among them, new energy automobiles are favored by a large number of consumers, especially electric automobiles are favored by the public. The electric automobile is an automobile which uses electric energy as a power source and drives through a motor, so the electric automobile needs to be charged before driving, the charging mode of the automobile is to electrically connect a charging cable with a charging pile or a household for charging, a charging current and zero sequence current monitoring component needs to be arranged on the charging cable, the charging current and zero sequence current monitoring component is an electric leakage protection device of the charging cable, the function of electric leakage protection of current can be realized, but the existing charging current and zero sequence current monitoring component still has the following part to be improved;
firstly, the overall structure of the existing charging current and zero sequence current monitoring assembly is not reasonable enough in layout and large in size, and is installed in a cable charging protection device (IC-CPD) used in an electric vehicle charging mode 2 to occupy a large space, and because a plurality of groups of electrical components are installed in a charging cable, the charging current and zero sequence current monitoring assembly with large size can reduce the heat dissipation function of the charging cable;
secondly, partial components of the existing charging current and zero sequence current monitoring assembly often fall off and shake after being integrally installed, and the service life of a charging cable is influenced;
third, the connected mode between the communication module of current charging current and zero sequence current monitoring subassembly and the power supply circuit board is not suitable enough, and on the one hand, packing density is great when connecting between them leads to the volume great, is unfavorable for charging current and zero sequence current monitoring subassembly's miniaturized design, and on the other hand, among the prior art, the two pin is less when connecting, can not satisfy and can enough monitor alternating current electric leakage but also can monitor direct current electric leakage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a charging current and zero sequence current monitoring subassembly to solve the overall structure's of current charging current and zero sequence current monitoring subassembly structural layout reasonable inadequately, the great and partial part of volume situation that drops and rock often appears after integrated installation, still solved the not enough suitable problem of connected mode between communication module and the power supply circuit board of current charging current and zero sequence current monitoring subassembly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a charging current and zero sequence current monitoring assembly is applied to a power supply circuit board and comprises a cover body, wherein a first cavity, a partition plate and a second cavity are arranged on the cover body, the first cavity and the second cavity are separated by the partition plate, a first sleeve, a second sleeve, a charging current transformer and a zero sequence current transformer are arranged in the first cavity, the charging current transformer is sleeved on the first sleeve, the zero sequence current transformer is sleeved on the first sleeve and the second sleeve, the charging current transformer detects charging current of the charging current and the zero sequence current monitoring assembly, and the zero sequence current transformer can detect a deviation value of inflow current and outflow current of the charging current and the zero sequence current monitoring assembly so as to determine whether a power supply circuit leaks;
a first connector assembly is arranged on the partition plate and comprises a first plate and a plurality of first conductive pieces, the first conductive pieces are respectively arranged on the first plate and penetrate through the first plate, the first plate is positioned in the first cavity, one end of each first conductive piece penetrates through the partition plate and extends into the second cavity, and a positioning column is further arranged in the first cavity and used for limiting the position of the first plate;
the inside of second cavity is provided with control circuit board, the last first fixed orifices that is provided with of control circuit board, first electrically conductive one end is passed first fixed orifices and is fixed through welding technique on the control circuit board, the last second connector subassembly that still is equipped with of control circuit board, the second connector subassembly with the wired communication connection of circuit board for the power supply, the second connector subassembly includes that second plate and a plurality of second electrically conductive, the second connector subassembly be used for to the circuit board transmission control signal for the power supply.
According to the utility model discloses, the lid is including two openings, and two openings are located the lower extreme and the side of lid and respectively with first cavity with the second cavity is relative, be located the opening of lid lower extreme can be before not carrying out the encapsulating operation with first cavity exposes in the field of vision, is located the opening of lid side can be demolishd expose the second cavity in the field of vision behind the apron.
According to the utility model discloses, two through-holes have still been seted up on the lid, two through-holes with first cavity communicates with each other, the pouring sealant has been pour in the inside of first cavity, the pouring sealant can be fixed and protect the component inside the first cavity, reduce the damage that various impact caused to the component inside the first cavity, the lower extreme of first sleeve and second sleeve exposes outside the pouring sealant, two through-holes respectively with the first sleeve with the second sleeve is relative, two electric wires have been run through respectively in two through-holes, two electric wires are live wire and zero line respectively, live wire and zero line wear to locate respectively in the inside of first sleeve with the second sleeve, charging current transformer cover is established on the first sleeve and is used for detecting the charging current in the live wire;
one ends of the two electric wires are fixedly connected to the power supply circuit board, and the other ends of the two electric wires respectively penetrate through the first sleeve and the second sleeve and are fixedly connected to the power supply circuit board.
According to the utility model discloses, the side of lid can be dismantled and be connected with the apron, the side of second cavity passes through the apron with the lid seals.
According to the utility model discloses, be provided with two fixed columns on the apron, two locating holes have been seted up to the lateral wall on the lid, the fixed column with the locating hole cooperatees and is used for the lid with the mutual location of apron, the apron with the lid passes through the buckle and can dismantle with the draw-in groove and be connected.
According to the utility model discloses, the second plate does the extension portion of control circuit board, the second electrically conductive piece is first metal paster, the second electrically conductive piece is attached on the surface of second plate, be provided with slotted hole and second metal paster on the power supply circuit board, first metal paster accompanies the second electrically conductive piece passes the slotted hole and with the contact of second metal paster.
According to the utility model discloses, charging current transformer's material is soft magnet, and soft magnet has good ductility and can also guarantee homogeneity and stable magnetic characteristic.
According to the utility model discloses, the inside unable adjustment base that still is equipped with of first cavity, the reference column set up in unable adjustment base's inside.
The cover body is further provided with fixing columns, fixing holes are formed in the power supply circuit board, and the fixing columns are matched with the fixing holes to be used for achieving assembly between the cover body and the power supply circuit board.
The utility model discloses a charging current and zero sequence current monitoring subassembly, its beneficial effect is: the first cavity and the second cavity are arranged inside the cover body, so that the detection module and the communication module can be reasonably arranged in a separated mode, the charging current transformer and the zero sequence current transformer are integrated and arranged inside the first cavity, the size of the detection module can be reduced, and the size of the charging current and zero sequence current monitoring assembly can be reduced as a whole;
secondly, the positioning columns arranged on the fixed base can prevent the first connector assembly from moving on the partition plate, so that glue filling operation can be conveniently performed in the first cavity;
and the second connector assembly needs a smaller assembly space when being connected with the power supply circuit board, so that the overall size of the charging current and zero sequence current monitoring assembly is smaller, more pins are arranged when the second connector assembly is connected with the power supply circuit board, the second connector assembly has better high-frequency characteristics, and the direct current leakage and the alternating current leakage can be monitored.
Drawings
Fig. 1 is the structure schematic diagram of the charging current and zero sequence current monitoring assembly of the present invention.
Fig. 2 is the utility model discloses a matched view of charging current and zero sequence current monitoring subassembly and power supply circuit board.
Fig. 3 is the internal structure schematic diagram of the first cavity and the second cavity of the charging current and zero sequence current monitoring assembly of the present invention.
Fig. 4 is the utility model discloses a charging current transformer and zero sequence current transformer and control circuit board's matched view.
Fig. 5 is a schematic structural diagram of the first connector assembly according to the present invention.
Fig. 6 is a schematic structural diagram of the cover plate of the present invention.
Fig. 7 is a schematic structural diagram of a second connector assembly according to the present invention.
Fig. 8 is a schematic structural view of another second connector assembly according to the present invention.
Detailed Description
The following describes a charging current and zero sequence current monitoring assembly in further detail with reference to the accompanying drawings. In the description of the present embodiment, unless otherwise specified, the terms "upper", "lower", "left", "right", "inner", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the charging current and zero sequence current monitoring assembly referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-3, for the utility model discloses a charging current and zero sequence current monitoring assembly is applied to power supply circuit board 13, including lid 1, be equipped with first cavity 2, baffle 8 and second cavity 3 on lid 1, first cavity 2 with second cavity 3 passes through baffle 8 separates, be provided with first sleeve 5, second sleeve 4, charging current transformer 7 and zero sequence current transformer 6 in the first cavity 2, charging current transformer 7 overlaps on the first sleeve 5, zero sequence current transformer 6 overlaps on first sleeve 5 and the second sleeve 4, charging current transformer 7 detects charging current and zero sequence current monitoring assembly's charging current, zero sequence current transformer 6 can detect the deviation value that detects charging current and zero sequence current monitoring assembly's the inflow current and the outflow current thereby confirms whether power supply circuit takes place the electric leakage;
as shown in fig. 4 and 5, a first connector assembly 10 is disposed on the partition plate 8, the first connector assembly 10 includes a first plate 1001 and a plurality of first conductive members 1002, the plurality of first conductive members 1002 are respectively arranged on the first plate 1001 and penetrate through the first plate 1001, the first plate 1001 is located inside the first cavity 2, one end of the first conductive member 1002 penetrates through the partition plate 8 and extends into the second cavity 3, a positioning post 9 is further disposed inside the first cavity 2, and the positioning post 9 is used for limiting a position of the first plate 1001;
as shown in fig. 4, a control circuit board 11 is disposed inside the second cavity 3, a first fixing hole is disposed on the control circuit board 11, one end of the first conductive member 1002 penetrates through the first fixing hole and is fixed on the control circuit board 11 by a welding technique, a second connector assembly 14 is further disposed on the control circuit board 11, the second connector assembly 14 is connected to the power supply circuit board 13 in a wired communication manner, the second connector assembly 14 includes a second plate 1401 and a plurality of second conductive members 1402, and the second connector assembly 14 is configured to transmit a control signal to the power supply circuit board 13.
In this embodiment, the charging current and zero sequence current monitoring component is installed in a charging cable of the electric vehicle, and is configured to detect a charging current of the live wire 16 and a deviation value between an incoming current and an outgoing current, and transmit a detected current signal to a power supply line through the control circuit board 11. The charging current transformer 7 detects the charging current of the live wire 16, the zero sequence current transformer 6 is used for detecting the deviation value of the current flowing in and the current flowing out, and the zero sequence current transformer 6 is a leakage transformer.
In this embodiment, the first conductive members 1002 are metal elastic pins, the number of the first conductive members 1002 is six, two wires of the charging current transformer 7 are connected to two first conductive members 1002, four wires of the zero sequence current transformer 6 are connected to the remaining four first conductive members 1002, and the six first conductive members 1002 are arranged in a line on the first plate member 1001. As shown in fig. 7, the second conductive device 1402 includes a first metal patch attached to the second board 1401 by an SMT technology, the extension portion is formed on the control circuit board 11 and located below the control circuit board 11, the number of the second conductive devices 1402 is six, that is, the number of the first metal patch is six, and the six second conductive devices 1402 transmit different signals, where two second conductive devices 1402 input a test signal, one second conductive device 1402 inputs a 5V power supply signal, one second conductive device 1402 inputs a GND signal, and the last second conductive device 1402 outputs a leakage alarm signal.
Further, as shown in fig. 8, the second conductive member 1402 may be a metal connecting pin, the second plate 1401 may be a connecting plate, the control circuit board 11 is provided with a first through hole matching with the metal connecting pin, the power supply circuit board 13 is provided with a second through hole, one end of the metal connecting pin passes through the first through hole and is connected with the control circuit board 11 through a welding technique, the other end of the metal connecting pin passes through the second through hole and is connected with the power supply circuit board 13 through a welding technique, and the number of the first through hole, the second through hole and the number of the metal connecting pin are the same.
The cover body 1 comprises two openings, the two openings are arranged at the lower end and the side surface of the cover body 1 and are respectively opposite to the first cavity 2 and the second cavity 3, the opening at the lower end of the cover body 1 can expose the first cavity 2 in the visual field before glue pouring operation, and the opening at the side surface of the cover body 1 can expose the second cavity 3 in the visual field after the cover plate 12 is detached.
The cover body 1 is further provided with two through holes, the two through holes are communicated with the first cavity 2, pouring sealant is poured inside the first cavity 2, the pouring sealant can fix and protect elements inside the first cavity 2, damage to the elements inside the first cavity 2 caused by various impacts is reduced, the lower ends of the first sleeve 5 and the second sleeve 4 are exposed outside the pouring sealant, the two through holes are respectively opposite to the first sleeve 5 and the second sleeve 4, two electric wires respectively penetrate through the two through holes, the two electric wires are respectively a live wire 16 and a zero wire 15, the live wire 16 and the zero wire 15 are respectively penetrated inside the first sleeve 5 and the second sleeve 4, and the charging current transformer 7 is sleeved on the first sleeve 5 and used for detecting charging current in the live wire 16;
one ends of the two electric wires are fixedly connected to the power supply circuit board 13, and the other ends of the two electric wires respectively penetrate through the first sleeve 5 and the second sleeve 4 and are fixedly connected to the power supply circuit board 13.
The side of the cover body 1 is detachably connected with a cover plate 12, and the side of the second cavity 3 is sealed with the cover body 1 through the cover plate 12.
The cover plate 12 is provided with two fixing columns, the side wall of the cover body 1 is provided with two fixing holes, the fixing columns are matched with the fixing holes to be used for mutually positioning the cover body 1 and the cover plate 12, and the cover plate 12 and the cover body 1 are detachably connected with a clamping groove through a buckle.
In this embodiment, as shown in fig. 6, the two fixing posts are located on the diagonal line of the cover plate 12, the cover plate 12 is provided with a buckle, and the cover body 1 is provided with a clamping groove.
The second plate 1401 is an extension portion of the control circuit board 11, the second conductive member 1402 is a first metal patch, the second conductive member 1402 is attached to the surface of the second plate 1401, a slot hole and a second metal patch are disposed on the power supply circuit board 13, and the first metal patch and the second conductive member 1402 penetrate through the slot hole and contact with the second metal patch.
The charging current transformer 7 is made of soft magnet, and the soft magnet has good ductility and can ensure homogeneous and stable magnetic characteristics.
A fixing base is further arranged inside the first cavity 2, and the positioning column 9 is arranged inside the fixing base.
In this embodiment, the positioning column 9 is detachably connected to the fixing base, so that the first connector assembly 10 can be conveniently mounted on the partition plate 8 or taken down from the partition plate 8.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the present invention. Such modifications and embellishments are also to be considered as within the scope of the invention.
Claims (9)
1. A charging current and zero sequence current monitoring assembly is applied to a power supply circuit board and is characterized by comprising a cover body, wherein a first cavity, a partition plate and a second cavity are arranged on the cover body, the first cavity and the second cavity are separated by the partition plate, a first sleeve, a second sleeve, a charging current transformer and a zero sequence current transformer are arranged in the first cavity, the charging current transformer is sleeved on the first sleeve, and the zero sequence current transformer is sleeved on the first sleeve and the second sleeve;
a first connector assembly is arranged on the partition plate and comprises a first plate and a plurality of first conductive pieces, the first conductive pieces are respectively arranged on the first plate and penetrate through the first plate, the first plate is positioned in the first cavity, one end of each first conductive piece penetrates through the partition plate and extends into the second cavity, and a positioning column is further arranged in the first cavity and used for limiting the position of the first plate;
the inside of second cavity is provided with control circuit board, the last first fixed orifices that is provided with of control circuit board, first electrically conductive one end is passed first fixed orifices and is fixed through welding technique on the control circuit board, the last second connector subassembly that still is equipped with of control circuit board, the second connector subassembly with the wired communication connection of circuit board for the power supply, the second connector subassembly includes that second plate and a plurality of second electrically conductive, the second connector subassembly be used for to the circuit board transmission control signal for the power supply.
2. The charging current and zero sequence current monitoring assembly of claim 1, wherein the first cavity and the second cavity are opened.
3. The charging current and zero sequence current monitoring assembly according to claim 1, wherein the cover body is further provided with two through holes, the two through holes are communicated with the first cavity, a potting adhesive is poured inside the first cavity, lower ends of the first sleeve and the second sleeve are exposed outside the potting adhesive, the two through holes are respectively opposite to the first sleeve and the second sleeve, and two wires are respectively penetrated through the two through holes;
one ends of the two electric wires are fixedly connected to the power supply circuit board, and the other ends of the two electric wires respectively penetrate through the first sleeve and the second sleeve and are fixedly connected to the power supply circuit board.
4. The charging current and zero sequence current monitoring assembly according to claim 1, wherein a cover plate is detachably connected to a side surface of the cover body, and the second cavity is sealed with the cover body through the cover plate.
5. The charging current and zero sequence current monitoring assembly according to claim 4, wherein the cover plate is provided with two positioning posts, the side wall of the cover plate is provided with two positioning holes, the positioning posts are matched with the positioning holes for positioning the cover plate and the cover plate with each other, and the cover plate are detachably connected with the clamping grooves through fasteners.
6. The charging current and zero sequence current monitoring assembly according to claim 1, wherein the second board is an outer extension portion of the control circuit board, the second conductive member is a first metal patch, the second conductive member is attached to a surface of the second board, a slot hole and a second metal patch are disposed on the power supply circuit board, and the first metal patch passes through the slot hole along with the second conductive member and contacts with the second metal patch.
7. The charging current and zero sequence current monitoring assembly according to claim 1, wherein the material of the charging current transformer is soft magnetic iron.
8. The charging current and zero sequence current monitoring assembly according to claim 1, wherein a fixing base is further disposed inside the first cavity, and the positioning column is disposed inside the fixing base.
9. The charging current and zero sequence current monitoring assembly according to claim 1, wherein the cover is further provided with a fixing post, the power supply circuit board is provided with a fixing hole, and the fixing post is matched with the fixing hole to realize assembly between the cover and the power supply circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222664734.2U CN218675256U (en) | 2022-10-10 | 2022-10-10 | Charging current and zero sequence current monitoring assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222664734.2U CN218675256U (en) | 2022-10-10 | 2022-10-10 | Charging current and zero sequence current monitoring assembly |
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| Publication Number | Publication Date |
|---|---|
| CN218675256U true CN218675256U (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222664734.2U Active CN218675256U (en) | 2022-10-10 | 2022-10-10 | Charging current and zero sequence current monitoring assembly |
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| CN (1) | CN218675256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993558A (en) * | 2023-03-22 | 2023-04-21 | 西安交通大学城市学院 | Electrical property measuring device of high-low voltage power distribution cabinet |
-
2022
- 2022-10-10 CN CN202222664734.2U patent/CN218675256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115993558A (en) * | 2023-03-22 | 2023-04-21 | 西安交通大学城市学院 | Electrical property measuring device of high-low voltage power distribution cabinet |
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